Project import
diff --git a/libopus/AUTHORS b/libopus/AUTHORS
new file mode 100644
index 0000000..b3d22a2
--- /dev/null
+++ b/libopus/AUTHORS
@@ -0,0 +1,6 @@
+Jean-Marc Valin (jmvalin@jmvalin.ca)
+Koen Vos (koenvos74@gmail.com)
+Timothy Terriberry (tterribe@xiph.org)
+Karsten Vandborg Sorensen (karsten.vandborg.sorensen@skype.net)
+Soren Skak Jensen (ssjensen@gn.com)
+Gregory Maxwell (greg@xiph.org)
diff --git a/libopus/Android.mk b/libopus/Android.mk
new file mode 100644
index 0000000..47e499b
--- /dev/null
+++ b/libopus/Android.mk
@@ -0,0 +1,60 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+include $(LOCAL_PATH)/celt_sources.mk
+include $(LOCAL_PATH)/opus_sources.mk
+include $(LOCAL_PATH)/silk_sources.mk
+
+LOCAL_MODULE := libopus
+OGG_DIR := external/libogg
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH)/src $(LOCAL_PATH)/silk \
+ $(LOCAL_PATH)/celt $(LOCAL_PATH)/silk/fixed $(OGG_DIR)/include
+LOCAL_SRC_FILES := $(CELT_SOURCES) $(SILK_SOURCES) $(SILK_SOURCES_FIXED) \
+ $(OPUS_SOURCES) $(OPUS_SOURCES_FLOAT) src/repacketizer_demo.c
+
+LOCAL_CFLAGS := -DNULL=0 -DSOCKLEN_T=socklen_t -DLOCALE_NOT_USED \
+ -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64 \
+ -Drestrict='' -D__EMX__ -DOPUS_BUILD -DFIXED_POINT \
+ -DUSE_ALLOCA -DHAVE_LRINT -DHAVE_LRINTF -O2 -fno-math-errno
+LOCAL_CPPFLAGS := -DBSD=1 -ffast-math -O2 -funroll-loops
+
+# Note: OPUS enhanced DSP/NEON implementation is not yet compatible with arm64.
+# Only add the appropriate defines for 32-bit arm architecture.
+LOCAL_SRC_FILES_arm += $(CELT_SOURCES_ARM)
+LOCAL_CFLAGS_arm += -DOPUS_ARM_ASM -DOPUS_ARM_INLINE_ASM \
+ -DOPUS_ARM_MAY_HAVE_EDSP -DOPUS_ARM_INLINE_EDSP \
+ -DOPUS_ARM_MAY_HAVE_MEDIA -DOPUS_ARM_INLINE_MEDIA \
+ -DOPUS_HAVE_RTCD
+# DSP, MEDIA and NEON instructions are in the same assembler file - thus we
+# need to include it even if NEON is not supported on target platform.
+LOCAL_SRC_FILES_arm += $(subst .s,_gnu.s,$(CELT_SOURCES_ARM_ASM))
+ifeq ($(ARCH_ARM_HAVE_NEON),true)
+LOCAL_SRC_FILES_arm += $(CELT_SOURCES_ARM_NEON_INTR) \
+ $(SILK_SOURCES_ARM_NEON_INTR)
+LOCAL_CFLAGS_arm += -DOPUS_ARM_MAY_HAVE_NEON -DOPUS_ARM_MAY_HAVE_NEON_INTR \
+ -DOPUS_ARM_PRESUME_NEON -DOPUS_ARM_INLINE_NEON
+endif
+
+LIBOPUS_X86_FILES :=
+LIBOPUS_X86_CFLAGS :=
+ifeq ($(ARCH_X86_HAVE_SSSE3),true)
+LIBOPUS_X86_FILES += $(CELT_SOURCES_SSE) $(CELT_SOURCES_SSE2)
+LIBOPUS_X86_CFLAGS += -DOPUS_X86_MAY_HAVE_SSE -DOPUS_X86_PRESUME_SSE \
+ -DOPUS_X86_MAY_HAVE_SSE2 -DOPUS_X86_PRESUME_SSE2
+endif
+
+ifeq ($(ARCH_X86_HAVE_SSE4_1),true)
+LIBOPUS_X86_FILES += $(CELT_SOURCES_SSE4_1) \
+ $(SILK_SOURCES_SSE4_1) $(SILK_SOURCES_FIXED_SSE4_1)
+LIBOPUS_X86_CFLAGS += -DOPUS_X86_MAY_HAVE_SSE4_1 -DOPUS_X86_PRESUME_SSE4_1
+endif
+
+LOCAL_SRC_FILES_x86 += $(LIBOPUS_X86_FILES)
+LOCAL_SRC_FILES_x86_64 += $(LIBOPUS_X86_FILES)
+LOCAL_CFLAGS_x86 += $(LIBOPUS_X86_CFLAGS)
+LOCAL_CFLAGS_x86_64 += $(LIBOPUS_X86_CFLAGS)
+
+LOCAL_STATIC_LIBRARIES := libogg
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/libopus/COPYING b/libopus/COPYING
new file mode 100644
index 0000000..9c739c3
--- /dev/null
+++ b/libopus/COPYING
@@ -0,0 +1,44 @@
+Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic,
+ Jean-Marc Valin, Timothy B. Terriberry,
+ CSIRO, Gregory Maxwell, Mark Borgerding,
+ Erik de Castro Lopo
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of Internet Society, IETF or IETF Trust, nor the
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Opus is subject to the royalty-free patent licenses which are
+specified at:
+
+Xiph.Org Foundation:
+https://datatracker.ietf.org/ipr/1524/
+
+Microsoft Corporation:
+https://datatracker.ietf.org/ipr/1914/
+
+Broadcom Corporation:
+https://datatracker.ietf.org/ipr/1526/
diff --git a/libopus/ChangeLog b/libopus/ChangeLog
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libopus/ChangeLog
diff --git a/libopus/CleanSpec.mk b/libopus/CleanSpec.mk
new file mode 100644
index 0000000..d531442
--- /dev/null
+++ b/libopus/CleanSpec.mk
@@ -0,0 +1,49 @@
+# Copyright (C) 2014 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# If you don't need to do a full clean build but would like to touch
+# a file or delete some intermediate files, add a clean step to the end
+# of the list. These steps will only be run once, if they haven't been
+# run before.
+#
+# E.g.:
+# $(call add-clean-step, touch -c external/sqlite/sqlite3.h)
+# $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libz_intermediates)
+#
+# Always use "touch -c" and "rm -f" or "rm -rf" to gracefully deal with
+# files that are missing or have been moved.
+#
+# Use $(PRODUCT_OUT) to get to the "out/target/product/blah/" directory.
+# Use $(OUT_DIR) to refer to the "out" directory.
+#
+# If you need to re-do something that's already mentioned, just copy
+# the command and add it to the bottom of the list. E.g., if a change
+# that you made last week required touching a file and a change you
+# made today requires touching the same file, just copy the old
+# touch step and add it to the end of the list.
+#
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************
+
+# For example:
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/AndroidTests_intermediates)
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/core_intermediates)
+#$(call add-clean-step, find $(OUT_DIR) -type f -name "IGTalkSession*" -print0 | xargs -0 rm -f)
+#$(call add-clean-step, rm -rf $(PRODUCT_OUT)/data/*)
+
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************
diff --git a/libopus/INSTALL b/libopus/INSTALL
new file mode 100644
index 0000000..2099840
--- /dev/null
+++ b/libopus/INSTALL
@@ -0,0 +1,370 @@
+Installation Instructions
+*************************
+
+Copyright (C) 1994-1996, 1999-2002, 2004-2013 Free Software Foundation,
+Inc.
+
+ Copying and distribution of this file, with or without modification,
+are permitted in any medium without royalty provided the copyright
+notice and this notice are preserved. This file is offered as-is,
+without warranty of any kind.
+
+Basic Installation
+==================
+
+ Briefly, the shell command `./configure && make && make install'
+should configure, build, and install this package. The following
+more-detailed instructions are generic; see the `README' file for
+instructions specific to this package. Some packages provide this
+`INSTALL' file but do not implement all of the features documented
+below. The lack of an optional feature in a given package is not
+necessarily a bug. More recommendations for GNU packages can be found
+in *note Makefile Conventions: (standards)Makefile Conventions.
+
+ The `configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation. It uses
+those values to create a `Makefile' in each directory of the package.
+It may also create one or more `.h' files containing system-dependent
+definitions. Finally, it creates a shell script `config.status' that
+you can run in the future to recreate the current configuration, and a
+file `config.log' containing compiler output (useful mainly for
+debugging `configure').
+
+ It can also use an optional file (typically called `config.cache'
+and enabled with `--cache-file=config.cache' or simply `-C') that saves
+the results of its tests to speed up reconfiguring. Caching is
+disabled by default to prevent problems with accidental use of stale
+cache files.
+
+ If you need to do unusual things to compile the package, please try
+to figure out how `configure' could check whether to do them, and mail
+diffs or instructions to the address given in the `README' so they can
+be considered for the next release. If you are using the cache, and at
+some point `config.cache' contains results you don't want to keep, you
+may remove or edit it.
+
+ The file `configure.ac' (or `configure.in') is used to create
+`configure' by a program called `autoconf'. You need `configure.ac' if
+you want to change it or regenerate `configure' using a newer version
+of `autoconf'.
+
+ The simplest way to compile this package is:
+
+ 1. `cd' to the directory containing the package's source code and type
+ `./configure' to configure the package for your system.
+
+ Running `configure' might take a while. While running, it prints
+ some messages telling which features it is checking for.
+
+ 2. Type `make' to compile the package.
+
+ 3. Optionally, type `make check' to run any self-tests that come with
+ the package, generally using the just-built uninstalled binaries.
+
+ 4. Type `make install' to install the programs and any data files and
+ documentation. When installing into a prefix owned by root, it is
+ recommended that the package be configured and built as a regular
+ user, and only the `make install' phase executed with root
+ privileges.
+
+ 5. Optionally, type `make installcheck' to repeat any self-tests, but
+ this time using the binaries in their final installed location.
+ This target does not install anything. Running this target as a
+ regular user, particularly if the prior `make install' required
+ root privileges, verifies that the installation completed
+ correctly.
+
+ 6. You can remove the program binaries and object files from the
+ source code directory by typing `make clean'. To also remove the
+ files that `configure' created (so you can compile the package for
+ a different kind of computer), type `make distclean'. There is
+ also a `make maintainer-clean' target, but that is intended mainly
+ for the package's developers. If you use it, you may have to get
+ all sorts of other programs in order to regenerate files that came
+ with the distribution.
+
+ 7. Often, you can also type `make uninstall' to remove the installed
+ files again. In practice, not all packages have tested that
+ uninstallation works correctly, even though it is required by the
+ GNU Coding Standards.
+
+ 8. Some packages, particularly those that use Automake, provide `make
+ distcheck', which can by used by developers to test that all other
+ targets like `make install' and `make uninstall' work correctly.
+ This target is generally not run by end users.
+
+Compilers and Options
+=====================
+
+ Some systems require unusual options for compilation or linking that
+the `configure' script does not know about. Run `./configure --help'
+for details on some of the pertinent environment variables.
+
+ You can give `configure' initial values for configuration parameters
+by setting variables in the command line or in the environment. Here
+is an example:
+
+ ./configure CC=c99 CFLAGS=-g LIBS=-lposix
+
+ *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+ You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory. To do this, you can use GNU `make'. `cd' to the
+directory where you want the object files and executables to go and run
+the `configure' script. `configure' automatically checks for the
+source code in the directory that `configure' is in and in `..'. This
+is known as a "VPATH" build.
+
+ With a non-GNU `make', it is safer to compile the package for one
+architecture at a time in the source code directory. After you have
+installed the package for one architecture, use `make distclean' before
+reconfiguring for another architecture.
+
+ On MacOS X 10.5 and later systems, you can create libraries and
+executables that work on multiple system types--known as "fat" or
+"universal" binaries--by specifying multiple `-arch' options to the
+compiler but only a single `-arch' option to the preprocessor. Like
+this:
+
+ ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+ CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+ CPP="gcc -E" CXXCPP="g++ -E"
+
+ This is not guaranteed to produce working output in all cases, you
+may have to build one architecture at a time and combine the results
+using the `lipo' tool if you have problems.
+
+Installation Names
+==================
+
+ By default, `make install' installs the package's commands under
+`/usr/local/bin', include files under `/usr/local/include', etc. You
+can specify an installation prefix other than `/usr/local' by giving
+`configure' the option `--prefix=PREFIX', where PREFIX must be an
+absolute file name.
+
+ You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files. If you
+pass the option `--exec-prefix=PREFIX' to `configure', the package uses
+PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files still use the regular prefix.
+
+ In addition, if you use an unusual directory layout you can give
+options like `--bindir=DIR' to specify different values for particular
+kinds of files. Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them. In general, the
+default for these options is expressed in terms of `${prefix}', so that
+specifying just `--prefix' will affect all of the other directory
+specifications that were not explicitly provided.
+
+ The most portable way to affect installation locations is to pass the
+correct locations to `configure'; however, many packages provide one or
+both of the following shortcuts of passing variable assignments to the
+`make install' command line to change installation locations without
+having to reconfigure or recompile.
+
+ The first method involves providing an override variable for each
+affected directory. For example, `make install
+prefix=/alternate/directory' will choose an alternate location for all
+directory configuration variables that were expressed in terms of
+`${prefix}'. Any directories that were specified during `configure',
+but not in terms of `${prefix}', must each be overridden at install
+time for the entire installation to be relocated. The approach of
+makefile variable overrides for each directory variable is required by
+the GNU Coding Standards, and ideally causes no recompilation.
+However, some platforms have known limitations with the semantics of
+shared libraries that end up requiring recompilation when using this
+method, particularly noticeable in packages that use GNU Libtool.
+
+ The second method involves providing the `DESTDIR' variable. For
+example, `make install DESTDIR=/alternate/directory' will prepend
+`/alternate/directory' before all installation names. The approach of
+`DESTDIR' overrides is not required by the GNU Coding Standards, and
+does not work on platforms that have drive letters. On the other hand,
+it does better at avoiding recompilation issues, and works well even
+when some directory options were not specified in terms of `${prefix}'
+at `configure' time.
+
+Optional Features
+=================
+
+ If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+ Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System). The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+ For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+ Some packages offer the ability to configure how verbose the
+execution of `make' will be. For these packages, running `./configure
+--enable-silent-rules' sets the default to minimal output, which can be
+overridden with `make V=1'; while running `./configure
+--disable-silent-rules' sets the default to verbose, which can be
+overridden with `make V=0'.
+
+Particular systems
+==================
+
+ On HP-UX, the default C compiler is not ANSI C compatible. If GNU
+CC is not installed, it is recommended to use the following options in
+order to use an ANSI C compiler:
+
+ ./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
+
+and if that doesn't work, install pre-built binaries of GCC for HP-UX.
+
+ HP-UX `make' updates targets which have the same time stamps as
+their prerequisites, which makes it generally unusable when shipped
+generated files such as `configure' are involved. Use GNU `make'
+instead.
+
+ On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
+parse its `<wchar.h>' header file. The option `-nodtk' can be used as
+a workaround. If GNU CC is not installed, it is therefore recommended
+to try
+
+ ./configure CC="cc"
+
+and if that doesn't work, try
+
+ ./configure CC="cc -nodtk"
+
+ On Solaris, don't put `/usr/ucb' early in your `PATH'. This
+directory contains several dysfunctional programs; working variants of
+these programs are available in `/usr/bin'. So, if you need `/usr/ucb'
+in your `PATH', put it _after_ `/usr/bin'.
+
+ On Haiku, software installed for all users goes in `/boot/common',
+not `/usr/local'. It is recommended to use the following options:
+
+ ./configure --prefix=/boot/common
+
+Specifying the System Type
+==========================
+
+ There may be some features `configure' cannot figure out
+automatically, but needs to determine by the type of machine the package
+will run on. Usually, assuming the package is built to be run on the
+_same_ architectures, `configure' can figure that out, but if it prints
+a message saying it cannot guess the machine type, give it the
+`--build=TYPE' option. TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name which has the form:
+
+ CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+ OS
+ KERNEL-OS
+
+ See the file `config.sub' for the possible values of each field. If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+ If you are _building_ compiler tools for cross-compiling, you should
+use the option `--target=TYPE' to select the type of system they will
+produce code for.
+
+ If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with `--host=TYPE'.
+
+Sharing Defaults
+================
+
+ If you want to set default values for `configure' scripts to share,
+you can create a site shell script called `config.site' that gives
+default values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists. Or, you can set the
+`CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all `configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+ Variables not defined in a site shell script can be set in the
+environment passed to `configure'. However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost. In order to avoid this problem, you should set
+them in the `configure' command line, using `VAR=value'. For example:
+
+ ./configure CC=/usr/local2/bin/gcc
+
+causes the specified `gcc' to be used as the C compiler (unless it is
+overridden in the site shell script).
+
+Unfortunately, this technique does not work for `CONFIG_SHELL' due to
+an Autoconf limitation. Until the limitation is lifted, you can use
+this workaround:
+
+ CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash
+
+`configure' Invocation
+======================
+
+ `configure' recognizes the following options to control how it
+operates.
+
+`--help'
+`-h'
+ Print a summary of all of the options to `configure', and exit.
+
+`--help=short'
+`--help=recursive'
+ Print a summary of the options unique to this package's
+ `configure', and exit. The `short' variant lists options used
+ only in the top level, while the `recursive' variant lists options
+ also present in any nested packages.
+
+`--version'
+`-V'
+ Print the version of Autoconf used to generate the `configure'
+ script, and exit.
+
+`--cache-file=FILE'
+ Enable the cache: use and save the results of the tests in FILE,
+ traditionally `config.cache'. FILE defaults to `/dev/null' to
+ disable caching.
+
+`--config-cache'
+`-C'
+ Alias for `--cache-file=config.cache'.
+
+`--quiet'
+`--silent'
+`-q'
+ Do not print messages saying which checks are being made. To
+ suppress all normal output, redirect it to `/dev/null' (any error
+ messages will still be shown).
+
+`--srcdir=DIR'
+ Look for the package's source code in directory DIR. Usually
+ `configure' can determine that directory automatically.
+
+`--prefix=DIR'
+ Use DIR as the installation prefix. *note Installation Names::
+ for more details, including other options available for fine-tuning
+ the installation locations.
+
+`--no-create'
+`-n'
+ Run the configure checks, but stop before creating any output
+ files.
+
+`configure' also accepts some other, not widely useful, options. Run
+`configure --help' for more details.
diff --git a/libopus/MODULE_LICENSE_BSD b/libopus/MODULE_LICENSE_BSD
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libopus/MODULE_LICENSE_BSD
diff --git a/libopus/Makefile.am b/libopus/Makefile.am
new file mode 100644
index 0000000..7a69114
--- /dev/null
+++ b/libopus/Makefile.am
@@ -0,0 +1,302 @@
+# Provide the full test output for failed tests when using the parallel
+# test suite (which is enabled by default with automake 1.13+).
+export VERBOSE = yes
+
+AUTOMAKE_OPTIONS = subdir-objects
+ACLOCAL_AMFLAGS = -I m4
+
+lib_LTLIBRARIES = libopus.la
+
+DIST_SUBDIRS = doc
+
+AM_CPPFLAGS = -I$(top_srcdir)/include -I$(top_srcdir)/celt -I$(top_srcdir)/silk \
+ -I$(top_srcdir)/silk/float -I$(top_srcdir)/silk/fixed $(NE10_CFLAGS)
+
+include celt_sources.mk
+include silk_sources.mk
+include opus_sources.mk
+
+if FIXED_POINT
+SILK_SOURCES += $(SILK_SOURCES_FIXED)
+if HAVE_SSE4_1
+SILK_SOURCES += $(SILK_SOURCES_SSE4_1) $(SILK_SOURCES_FIXED_SSE4_1)
+endif
+else
+SILK_SOURCES += $(SILK_SOURCES_FLOAT)
+if HAVE_SSE4_1
+SILK_SOURCES += $(SILK_SOURCES_SSE4_1)
+endif
+endif
+
+if DISABLE_FLOAT_API
+else
+OPUS_SOURCES += $(OPUS_SOURCES_FLOAT)
+endif
+
+if HAVE_SSE
+CELT_SOURCES += $(CELT_SOURCES_SSE)
+endif
+if HAVE_SSE2
+CELT_SOURCES += $(CELT_SOURCES_SSE2)
+endif
+if HAVE_SSE4_1
+CELT_SOURCES += $(CELT_SOURCES_SSE4_1)
+endif
+
+if CPU_ARM
+CELT_SOURCES += $(CELT_SOURCES_ARM)
+SILK_SOURCES += $(SILK_SOURCES_ARM)
+
+if HAVE_ARM_NEON_INTR
+CELT_SOURCES += $(CELT_SOURCES_ARM_NEON_INTR)
+SILK_SOURCES += $(SILK_SOURCES_ARM_NEON_INTR)
+endif
+
+if HAVE_ARM_NE10
+CELT_SOURCES += $(CELT_SOURCES_ARM_NE10)
+endif
+
+if OPUS_ARM_EXTERNAL_ASM
+noinst_LTLIBRARIES = libarmasm.la
+libarmasm_la_SOURCES = $(CELT_SOURCES_ARM_ASM:.s=-gnu.S)
+BUILT_SOURCES = $(CELT_SOURCES_ARM_ASM:.s=-gnu.S) \
+ $(CELT_AM_SOURCES_ARM_ASM:.s.in=.s) \
+ $(CELT_AM_SOURCES_ARM_ASM:.s.in=-gnu.S)
+endif
+endif
+
+CLEANFILES = $(CELT_SOURCES_ARM_ASM:.s=-gnu.S) \
+ $(CELT_AM_SOURCES_ARM_ASM:.s.in=-gnu.S)
+
+include celt_headers.mk
+include silk_headers.mk
+include opus_headers.mk
+
+libopus_la_SOURCES = $(CELT_SOURCES) $(SILK_SOURCES) $(OPUS_SOURCES)
+libopus_la_LDFLAGS = -no-undefined -version-info @OPUS_LT_CURRENT@:@OPUS_LT_REVISION@:@OPUS_LT_AGE@
+libopus_la_LIBADD = $(NE10_LIBS) $(LIBM)
+if OPUS_ARM_EXTERNAL_ASM
+libopus_la_LIBADD += libarmasm.la
+endif
+
+pkginclude_HEADERS = include/opus.h include/opus_multistream.h include/opus_types.h include/opus_defines.h
+
+noinst_HEADERS = $(OPUS_HEAD) $(SILK_HEAD) $(CELT_HEAD)
+
+if EXTRA_PROGRAMS
+noinst_PROGRAMS = opus_demo repacketizer_demo opus_compare tests/test_opus_api tests/test_opus_encode tests/test_opus_decode tests/test_opus_padding celt/tests/test_unit_cwrs32 celt/tests/test_unit_dft celt/tests/test_unit_entropy celt/tests/test_unit_laplace celt/tests/test_unit_mathops celt/tests/test_unit_mdct celt/tests/test_unit_rotation celt/tests/test_unit_types
+
+TESTS = celt/tests/test_unit_types celt/tests/test_unit_mathops celt/tests/test_unit_entropy celt/tests/test_unit_laplace celt/tests/test_unit_dft celt/tests/test_unit_mdct celt/tests/test_unit_rotation celt/tests/test_unit_cwrs32 tests/test_opus_api tests/test_opus_decode tests/test_opus_encode tests/test_opus_padding
+
+opus_demo_SOURCES = src/opus_demo.c
+
+opus_demo_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+
+repacketizer_demo_SOURCES = src/repacketizer_demo.c
+
+repacketizer_demo_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+
+opus_compare_SOURCES = src/opus_compare.c
+opus_compare_LDADD = $(LIBM)
+
+tests_test_opus_api_SOURCES = tests/test_opus_api.c tests/test_opus_common.h
+tests_test_opus_api_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+
+tests_test_opus_encode_SOURCES = tests/test_opus_encode.c tests/test_opus_common.h
+tests_test_opus_encode_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+
+tests_test_opus_decode_SOURCES = tests/test_opus_decode.c tests/test_opus_common.h
+tests_test_opus_decode_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+
+tests_test_opus_padding_SOURCES = tests/test_opus_padding.c tests/test_opus_common.h
+tests_test_opus_padding_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+
+celt_tests_test_unit_cwrs32_SOURCES = celt/tests/test_unit_cwrs32.c
+celt_tests_test_unit_cwrs32_LDADD = $(LIBM)
+
+celt_tests_test_unit_dft_SOURCES = celt/tests/test_unit_dft.c
+celt_tests_test_unit_dft_LDADD = $(NE10_LIBS) $(LIBM)
+if OPUS_ARM_EXTERNAL_ASM
+celt_tests_test_unit_dft_LDADD += libarmasm.la
+endif
+
+celt_tests_test_unit_entropy_SOURCES = celt/tests/test_unit_entropy.c
+celt_tests_test_unit_entropy_LDADD = $(LIBM)
+
+celt_tests_test_unit_laplace_SOURCES = celt/tests/test_unit_laplace.c
+celt_tests_test_unit_laplace_LDADD = $(LIBM)
+
+celt_tests_test_unit_mathops_SOURCES = celt/tests/test_unit_mathops.c
+celt_tests_test_unit_mathops_LDADD = $(NE10_LIBS) $(LIBM)
+if OPUS_ARM_EXTERNAL_ASM
+celt_tests_test_unit_mathops_LDADD += libarmasm.la
+endif
+
+celt_tests_test_unit_mdct_SOURCES = celt/tests/test_unit_mdct.c
+celt_tests_test_unit_mdct_LDADD = $(NE10_LIBS) $(LIBM)
+if OPUS_ARM_EXTERNAL_ASM
+celt_tests_test_unit_mdct_LDADD += libarmasm.la
+endif
+
+celt_tests_test_unit_rotation_SOURCES = celt/tests/test_unit_rotation.c
+celt_tests_test_unit_rotation_LDADD = $(NE10_LIBS) $(LIBM)
+if OPUS_ARM_EXTERNAL_ASM
+celt_tests_test_unit_rotation_LDADD += libarmasm.la
+endif
+
+celt_tests_test_unit_types_SOURCES = celt/tests/test_unit_types.c
+celt_tests_test_unit_types_LDADD = $(LIBM)
+endif
+
+if CUSTOM_MODES
+pkginclude_HEADERS += include/opus_custom.h
+if EXTRA_PROGRAMS
+noinst_PROGRAMS += opus_custom_demo
+opus_custom_demo_SOURCES = celt/opus_custom_demo.c
+opus_custom_demo_LDADD = libopus.la $(LIBM)
+endif
+endif
+
+EXTRA_DIST = version.mk \
+ opus.pc.in \
+ opus-uninstalled.pc.in \
+ opus.m4 \
+ Makefile.mips \
+ Makefile.unix \
+ tests/run_vectors.sh \
+ celt/arm/arm2gnu.pl \
+ celt/arm/celt_pitch_xcorr_arm.s \
+ win32/VS2015/silk_float.vcxproj \
+ win32/VS2015/celt.vcxproj.filters \
+ win32/VS2015/opus.vcxproj \
+ win32/VS2015/silk_common.vcxproj.filters \
+ win32/VS2015/silk_float.vcxproj.filters \
+ win32/VS2015/test_opus_encode.vcxproj.filters \
+ win32/VS2015/silk_common.vcxproj \
+ win32/VS2015/test_opus_encode.vcxproj \
+ win32/VS2015/opus_demo.vcxproj \
+ win32/VS2015/test_opus_api.vcxproj.filters \
+ win32/VS2015/test_opus_api.vcxproj \
+ win32/VS2015/test_opus_decode.vcxproj.filters \
+ win32/VS2015/silk_fixed.vcxproj.filters \
+ win32/VS2015/opus_demo.vcxproj.filters \
+ win32/VS2015/silk_fixed.vcxproj \
+ win32/VS2015/opus.vcxproj.filters \
+ win32/VS2015/test_opus_decode.vcxproj \
+ win32/VS2015/celt.vcxproj \
+ win32/VS2015/opus.sln \
+ win32/genversion.bat \
+ win32/config.h
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = opus.pc
+
+m4datadir = $(datadir)/aclocal
+m4data_DATA = opus.m4
+
+# Targets to build and install just the library without the docs
+opus check-opus install-opus: export NO_DOXYGEN = 1
+
+opus: all
+check-opus: check
+install-opus: install
+
+
+# Or just the docs
+docs:
+ ( cd doc && $(MAKE) $(AM_MAKEFLAGS) )
+
+install-docs:
+ ( cd doc && $(MAKE) $(AM_MAKEFLAGS) install )
+
+
+# Or everything (by default)
+all-local:
+ @[ -n "$(NO_DOXYGEN)" ] || ( cd doc && $(MAKE) $(AM_MAKEFLAGS) )
+
+install-data-local:
+ @[ -n "$(NO_DOXYGEN)" ] || ( cd doc && $(MAKE) $(AM_MAKEFLAGS) install )
+
+clean-local:
+ -( cd doc && $(MAKE) $(AM_MAKEFLAGS) clean )
+
+uninstall-local:
+ ( cd doc && $(MAKE) $(AM_MAKEFLAGS) uninstall )
+
+
+# We check this every time make is run, with configure.ac being touched to
+# trigger an update of the build system files if update_version changes the
+# current PACKAGE_VERSION (or if package_version was modified manually by a
+# user with either AUTO_UPDATE=no or no update_version script present - the
+# latter being the normal case for tarball releases).
+#
+# We can't just add the package_version file to CONFIGURE_DEPENDENCIES since
+# simply running autoconf will not actually regenerate configure for us when
+# the content of that file changes (due to autoconf dependency checking not
+# knowing about that without us creating yet another file for it to include).
+#
+# The MAKECMDGOALS check is a gnu-make'ism, but will degrade 'gracefully' for
+# makes that don't support it. The only loss of functionality is not forcing
+# an update of package_version for `make dist` if AUTO_UPDATE=no, but that is
+# unlikely to be a real problem for any real user.
+$(top_srcdir)/configure.ac: force
+ @case "$(MAKECMDGOALS)" in \
+ dist-hook) exit 0 ;; \
+ dist-* | dist | distcheck | distclean) _arg=release ;; \
+ esac; \
+ if ! $(top_srcdir)/update_version $$_arg 2> /dev/null; then \
+ if [ ! -e $(top_srcdir)/package_version ]; then \
+ echo 'PACKAGE_VERSION="unknown"' > $(top_srcdir)/package_version; \
+ fi; \
+ . $(top_srcdir)/package_version || exit 1; \
+ [ "$(PACKAGE_VERSION)" != "$$PACKAGE_VERSION" ] || exit 0; \
+ fi; \
+ touch $@
+
+force:
+
+# Create a minimal package_version file when make dist is run.
+dist-hook:
+ echo 'PACKAGE_VERSION="$(PACKAGE_VERSION)"' > $(top_distdir)/package_version
+
+
+.PHONY: opus check-opus install-opus docs install-docs
+
+# automake doesn't do dependency tracking for asm files, that I can tell
+$(CELT_SOURCES_ARM_ASM:%.s=%-gnu.S): celt/arm/armopts-gnu.S
+$(CELT_SOURCES_ARM_ASM:%.s=%-gnu.S): $(top_srcdir)/celt/arm/arm2gnu.pl
+
+# convert ARM asm to GNU as format
+%-gnu.S: $(top_srcdir)/%.s
+ $(top_srcdir)/celt/arm/arm2gnu.pl @ARM2GNU_PARAMS@ < $< > $@
+# For autoconf-modified sources (e.g., armopts.s)
+%-gnu.S: %.s
+ $(top_srcdir)/celt/arm/arm2gnu.pl @ARM2GNU_PARAMS@ < $< > $@
+
+OPT_UNIT_TEST_OBJ = $(celt_tests_test_unit_mathops_SOURCES:.c=.o) \
+ $(celt_tests_test_unit_rotation_SOURCES:.c=.o) \
+ $(celt_tests_test_unit_mdct_SOURCES:.c=.o) \
+ $(celt_tests_test_unit_dft_SOURCES:.c=.o)
+
+if HAVE_SSE
+SSE_OBJ = $(CELT_SOURCES_SSE:.c=.lo)
+$(SSE_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += $(OPUS_X86_SSE_CFLAGS)
+endif
+
+if HAVE_SSE2
+SSE2_OBJ = $(CELT_SOURCES_SSE2:.c=.lo)
+$(SSE2_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += $(OPUS_X86_SSE2_CFLAGS)
+endif
+
+if HAVE_SSE4_1
+SSE4_1_OBJ = $(CELT_SOURCES_SSE4_1:.c=.lo) \
+ $(SILK_SOURCES_SSE4_1:.c=.lo) \
+ $(SILK_SOURCES_FIXED_SSE4_1:.c=.lo)
+$(SSE4_1_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += $(OPUS_X86_SSE4_1_CFLAGS)
+endif
+
+if HAVE_ARM_NEON_INTR
+ARM_NEON_INTR_OBJ = $(CELT_SOURCES_ARM_NEON_INTR:.c=.lo) $(SILK_SOURCES_ARM_NEON_INTR:.c=.lo)
+$(ARM_NEON_INTR_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += \
+ $(OPUS_ARM_NEON_INTR_CFLAGS) $(NE10_CFLAGS)
+endif
diff --git a/libopus/Makefile.in b/libopus/Makefile.in
new file mode 100644
index 0000000..dbbe574
--- /dev/null
+++ b/libopus/Makefile.in
@@ -0,0 +1,3173 @@
+# Makefile.in generated by automake 1.15 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2014 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
+
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+ if test -z '$(MAKELEVEL)'; then \
+ false; \
+ elif test -n '$(MAKE_HOST)'; then \
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+ elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+ true; \
+ else \
+ false; \
+ fi; \
+}
+am__make_running_with_option = \
+ case $${target_option-} in \
+ ?) ;; \
+ *) echo "am__make_running_with_option: internal error: invalid" \
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+ skip_next=no; \
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+@EXTRA_PROGRAMS_TRUE@ repacketizer_demo$(EXEEXT) \
+@EXTRA_PROGRAMS_TRUE@ opus_compare$(EXEEXT) \
+@EXTRA_PROGRAMS_TRUE@ tests/test_opus_api$(EXEEXT) \
+@EXTRA_PROGRAMS_TRUE@ tests/test_opus_encode$(EXEEXT) \
+@EXTRA_PROGRAMS_TRUE@ tests/test_opus_decode$(EXEEXT) \
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+@EXTRA_PROGRAMS_TRUE@ tests/test_opus_encode$(EXEEXT) \
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+@CUSTOM_MODES_TRUE@am__append_19 = include/opus_custom.h
+@CUSTOM_MODES_TRUE@@EXTRA_PROGRAMS_TRUE@am__append_20 = opus_custom_demo
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+program_transform_name = @program_transform_name@
+psdir = @psdir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+AUTOMAKE_OPTIONS = subdir-objects
+ACLOCAL_AMFLAGS = -I m4
+lib_LTLIBRARIES = libopus.la
+DIST_SUBDIRS = doc
+AM_CPPFLAGS = -I$(top_srcdir)/include -I$(top_srcdir)/celt -I$(top_srcdir)/silk \
+ -I$(top_srcdir)/silk/float -I$(top_srcdir)/silk/fixed $(NE10_CFLAGS)
+
+CELT_SOURCES = celt/bands.c celt/celt.c celt/celt_encoder.c \
+ celt/celt_decoder.c celt/cwrs.c celt/entcode.c celt/entdec.c \
+ celt/entenc.c celt/kiss_fft.c celt/laplace.c celt/mathops.c \
+ celt/mdct.c celt/modes.c celt/pitch.c celt/celt_lpc.c \
+ celt/quant_bands.c celt/rate.c celt/vq.c $(am__append_6) \
+ $(am__append_7) $(am__append_8) $(am__append_9) \
+ $(am__append_11) $(am__append_13)
+CELT_SOURCES_SSE = celt/x86/x86cpu.c \
+celt/x86/x86_celt_map.c \
+celt/x86/pitch_sse.c
+
+CELT_SOURCES_SSE2 = celt/x86/pitch_sse2.c
+CELT_SOURCES_SSE4_1 = celt/x86/celt_lpc_sse.c \
+celt/x86/pitch_sse4_1.c
+
+CELT_SOURCES_ARM = \
+celt/arm/armcpu.c \
+celt/arm/arm_celt_map.c
+
+CELT_SOURCES_ARM_ASM = \
+celt/arm/celt_pitch_xcorr_arm.s
+
+CELT_AM_SOURCES_ARM_ASM = \
+celt/arm/armopts.s.in
+
+CELT_SOURCES_ARM_NEON_INTR = \
+celt/arm/celt_neon_intr.c
+
+CELT_SOURCES_ARM_NE10 = \
+celt/arm/celt_ne10_fft.c \
+celt/arm/celt_ne10_mdct.c
+
+SILK_SOURCES = silk/CNG.c silk/code_signs.c silk/init_decoder.c \
+ silk/decode_core.c silk/decode_frame.c \
+ silk/decode_parameters.c silk/decode_indices.c \
+ silk/decode_pulses.c silk/decoder_set_fs.c silk/dec_API.c \
+ silk/enc_API.c silk/encode_indices.c silk/encode_pulses.c \
+ silk/gain_quant.c silk/interpolate.c silk/LP_variable_cutoff.c \
+ silk/NLSF_decode.c silk/NSQ.c silk/NSQ_del_dec.c silk/PLC.c \
+ silk/shell_coder.c silk/tables_gain.c silk/tables_LTP.c \
+ silk/tables_NLSF_CB_NB_MB.c silk/tables_NLSF_CB_WB.c \
+ silk/tables_other.c silk/tables_pitch_lag.c \
+ silk/tables_pulses_per_block.c silk/VAD.c \
+ silk/control_audio_bandwidth.c silk/quant_LTP_gains.c \
+ silk/VQ_WMat_EC.c silk/HP_variable_cutoff.c silk/NLSF_encode.c \
+ silk/NLSF_VQ.c silk/NLSF_unpack.c silk/NLSF_del_dec_quant.c \
+ silk/process_NLSFs.c silk/stereo_LR_to_MS.c \
+ silk/stereo_MS_to_LR.c silk/check_control_input.c \
+ silk/control_SNR.c silk/init_encoder.c silk/control_codec.c \
+ silk/A2NLSF.c silk/ana_filt_bank_1.c silk/biquad_alt.c \
+ silk/bwexpander_32.c silk/bwexpander.c silk/debug.c \
+ silk/decode_pitch.c silk/inner_prod_aligned.c silk/lin2log.c \
+ silk/log2lin.c silk/LPC_analysis_filter.c \
+ silk/LPC_inv_pred_gain.c silk/table_LSF_cos.c silk/NLSF2A.c \
+ silk/NLSF_stabilize.c silk/NLSF_VQ_weights_laroia.c \
+ silk/pitch_est_tables.c silk/resampler.c \
+ silk/resampler_down2_3.c silk/resampler_down2.c \
+ silk/resampler_private_AR2.c silk/resampler_private_down_FIR.c \
+ silk/resampler_private_IIR_FIR.c \
+ silk/resampler_private_up2_HQ.c silk/resampler_rom.c \
+ silk/sigm_Q15.c silk/sort.c silk/sum_sqr_shift.c \
+ silk/stereo_decode_pred.c silk/stereo_encode_pred.c \
+ silk/stereo_find_predictor.c silk/stereo_quant_pred.c \
+ $(am__append_1) $(am__append_2) $(am__append_3) \
+ $(am__append_4) $(am__append_10) $(am__append_12)
+SILK_SOURCES_SSE4_1 = silk/x86/NSQ_sse.c \
+silk/x86/NSQ_del_dec_sse.c \
+silk/x86/x86_silk_map.c \
+silk/x86/VAD_sse.c \
+silk/x86/VQ_WMat_EC_sse.c
+
+SILK_SOURCES_ARM_NEON_INTR = \
+silk/arm/arm_silk_map.c \
+silk/arm/NSQ_neon.c
+
+SILK_SOURCES_FIXED = \
+silk/fixed/LTP_analysis_filter_FIX.c \
+silk/fixed/LTP_scale_ctrl_FIX.c \
+silk/fixed/corrMatrix_FIX.c \
+silk/fixed/encode_frame_FIX.c \
+silk/fixed/find_LPC_FIX.c \
+silk/fixed/find_LTP_FIX.c \
+silk/fixed/find_pitch_lags_FIX.c \
+silk/fixed/find_pred_coefs_FIX.c \
+silk/fixed/noise_shape_analysis_FIX.c \
+silk/fixed/prefilter_FIX.c \
+silk/fixed/process_gains_FIX.c \
+silk/fixed/regularize_correlations_FIX.c \
+silk/fixed/residual_energy16_FIX.c \
+silk/fixed/residual_energy_FIX.c \
+silk/fixed/solve_LS_FIX.c \
+silk/fixed/warped_autocorrelation_FIX.c \
+silk/fixed/apply_sine_window_FIX.c \
+silk/fixed/autocorr_FIX.c \
+silk/fixed/burg_modified_FIX.c \
+silk/fixed/k2a_FIX.c \
+silk/fixed/k2a_Q16_FIX.c \
+silk/fixed/pitch_analysis_core_FIX.c \
+silk/fixed/vector_ops_FIX.c \
+silk/fixed/schur64_FIX.c \
+silk/fixed/schur_FIX.c
+
+SILK_SOURCES_FIXED_SSE4_1 = silk/fixed/x86/vector_ops_FIX_sse.c \
+silk/fixed/x86/burg_modified_FIX_sse.c \
+silk/fixed/x86/prefilter_FIX_sse.c
+
+SILK_SOURCES_FLOAT = \
+silk/float/apply_sine_window_FLP.c \
+silk/float/corrMatrix_FLP.c \
+silk/float/encode_frame_FLP.c \
+silk/float/find_LPC_FLP.c \
+silk/float/find_LTP_FLP.c \
+silk/float/find_pitch_lags_FLP.c \
+silk/float/find_pred_coefs_FLP.c \
+silk/float/LPC_analysis_filter_FLP.c \
+silk/float/LTP_analysis_filter_FLP.c \
+silk/float/LTP_scale_ctrl_FLP.c \
+silk/float/noise_shape_analysis_FLP.c \
+silk/float/prefilter_FLP.c \
+silk/float/process_gains_FLP.c \
+silk/float/regularize_correlations_FLP.c \
+silk/float/residual_energy_FLP.c \
+silk/float/solve_LS_FLP.c \
+silk/float/warped_autocorrelation_FLP.c \
+silk/float/wrappers_FLP.c \
+silk/float/autocorrelation_FLP.c \
+silk/float/burg_modified_FLP.c \
+silk/float/bwexpander_FLP.c \
+silk/float/energy_FLP.c \
+silk/float/inner_product_FLP.c \
+silk/float/k2a_FLP.c \
+silk/float/levinsondurbin_FLP.c \
+silk/float/LPC_inv_pred_gain_FLP.c \
+silk/float/pitch_analysis_core_FLP.c \
+silk/float/scale_copy_vector_FLP.c \
+silk/float/scale_vector_FLP.c \
+silk/float/schur_FLP.c \
+silk/float/sort_FLP.c
+
+OPUS_SOURCES = src/opus.c src/opus_decoder.c src/opus_encoder.c \
+ src/opus_multistream.c src/opus_multistream_encoder.c \
+ src/opus_multistream_decoder.c src/repacketizer.c \
+ $(am__append_5)
+OPUS_SOURCES_FLOAT = \
+src/analysis.c \
+src/mlp.c \
+src/mlp_data.c
+
+@CPU_ARM_TRUE@@OPUS_ARM_EXTERNAL_ASM_TRUE@noinst_LTLIBRARIES = libarmasm.la
+@CPU_ARM_TRUE@@OPUS_ARM_EXTERNAL_ASM_TRUE@libarmasm_la_SOURCES = $(CELT_SOURCES_ARM_ASM:.s=-gnu.S)
+@CPU_ARM_TRUE@@OPUS_ARM_EXTERNAL_ASM_TRUE@BUILT_SOURCES = $(CELT_SOURCES_ARM_ASM:.s=-gnu.S) \
+@CPU_ARM_TRUE@@OPUS_ARM_EXTERNAL_ASM_TRUE@ $(CELT_AM_SOURCES_ARM_ASM:.s.in=.s) \
+@CPU_ARM_TRUE@@OPUS_ARM_EXTERNAL_ASM_TRUE@ $(CELT_AM_SOURCES_ARM_ASM:.s.in=-gnu.S)
+
+CLEANFILES = $(CELT_SOURCES_ARM_ASM:.s=-gnu.S) \
+ $(CELT_AM_SOURCES_ARM_ASM:.s.in=-gnu.S)
+
+CELT_HEAD = \
+celt/arch.h \
+celt/bands.h \
+celt/celt.h \
+celt/cpu_support.h \
+include/opus_types.h \
+include/opus_defines.h \
+include/opus_custom.h \
+celt/cwrs.h \
+celt/ecintrin.h \
+celt/entcode.h \
+celt/entdec.h \
+celt/entenc.h \
+celt/fixed_debug.h \
+celt/fixed_generic.h \
+celt/float_cast.h \
+celt/_kiss_fft_guts.h \
+celt/kiss_fft.h \
+celt/laplace.h \
+celt/mathops.h \
+celt/mdct.h \
+celt/mfrngcod.h \
+celt/modes.h \
+celt/os_support.h \
+celt/pitch.h \
+celt/celt_lpc.h \
+celt/x86/celt_lpc_sse.h \
+celt/quant_bands.h \
+celt/rate.h \
+celt/stack_alloc.h \
+celt/vq.h \
+celt/static_modes_float.h \
+celt/static_modes_fixed.h \
+celt/static_modes_float_arm_ne10.h \
+celt/static_modes_fixed_arm_ne10.h \
+celt/arm/armcpu.h \
+celt/arm/fixed_armv4.h \
+celt/arm/fixed_armv5e.h \
+celt/arm/fixed_arm64.h \
+celt/arm/kiss_fft_armv4.h \
+celt/arm/kiss_fft_armv5e.h \
+celt/arm/pitch_arm.h \
+celt/arm/fft_arm.h \
+celt/arm/mdct_arm.h \
+celt/mips/celt_mipsr1.h \
+celt/mips/fixed_generic_mipsr1.h \
+celt/mips/kiss_fft_mipsr1.h \
+celt/mips/mdct_mipsr1.h \
+celt/mips/pitch_mipsr1.h \
+celt/mips/vq_mipsr1.h \
+celt/x86/pitch_sse.h \
+celt/x86/x86cpu.h
+
+SILK_HEAD = \
+silk/debug.h \
+silk/control.h \
+silk/errors.h \
+silk/API.h \
+silk/typedef.h \
+silk/define.h \
+silk/main.h \
+silk/x86/main_sse.h \
+silk/PLC.h \
+silk/structs.h \
+silk/tables.h \
+silk/tuning_parameters.h \
+silk/Inlines.h \
+silk/MacroCount.h \
+silk/MacroDebug.h \
+silk/macros.h \
+silk/NSQ.h \
+silk/pitch_est_defines.h \
+silk/resampler_private.h \
+silk/resampler_rom.h \
+silk/resampler_structs.h \
+silk/SigProc_FIX.h \
+silk/x86/SigProc_FIX_sse.h \
+silk/arm/macros_armv4.h \
+silk/arm/macros_armv5e.h \
+silk/arm/macros_arm64.h \
+silk/arm/SigProc_FIX_armv4.h \
+silk/arm/SigProc_FIX_armv5e.h \
+silk/arm/NSQ_neon.h \
+silk/fixed/main_FIX.h \
+silk/fixed/structs_FIX.h \
+silk/fixed/mips/noise_shape_analysis_FIX_mipsr1.h \
+silk/fixed/mips/prefilter_FIX_mipsr1.h \
+silk/fixed/mips/warped_autocorrelation_FIX_mipsr1.h \
+silk/float/main_FLP.h \
+silk/float/structs_FLP.h \
+silk/float/SigProc_FLP.h \
+silk/mips/macros_mipsr1.h \
+silk/mips/NSQ_del_dec_mipsr1.h \
+silk/mips/sigproc_fix_mipsr1.h
+
+OPUS_HEAD = \
+include/opus.h \
+include/opus_multistream.h \
+src/opus_private.h \
+src/analysis.h \
+src/mlp.h \
+src/tansig_table.h
+
+libopus_la_SOURCES = $(CELT_SOURCES) $(SILK_SOURCES) $(OPUS_SOURCES)
+libopus_la_LDFLAGS = -no-undefined -version-info @OPUS_LT_CURRENT@:@OPUS_LT_REVISION@:@OPUS_LT_AGE@
+libopus_la_LIBADD = $(NE10_LIBS) $(LIBM) $(am__append_14)
+pkginclude_HEADERS = include/opus.h include/opus_multistream.h \
+ include/opus_types.h include/opus_defines.h $(am__append_19)
+noinst_HEADERS = $(OPUS_HEAD) $(SILK_HEAD) $(CELT_HEAD)
+@EXTRA_PROGRAMS_TRUE@opus_demo_SOURCES = src/opus_demo.c
+@EXTRA_PROGRAMS_TRUE@opus_demo_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+@EXTRA_PROGRAMS_TRUE@repacketizer_demo_SOURCES = src/repacketizer_demo.c
+@EXTRA_PROGRAMS_TRUE@repacketizer_demo_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+@EXTRA_PROGRAMS_TRUE@opus_compare_SOURCES = src/opus_compare.c
+@EXTRA_PROGRAMS_TRUE@opus_compare_LDADD = $(LIBM)
+@EXTRA_PROGRAMS_TRUE@tests_test_opus_api_SOURCES = tests/test_opus_api.c tests/test_opus_common.h
+@EXTRA_PROGRAMS_TRUE@tests_test_opus_api_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+@EXTRA_PROGRAMS_TRUE@tests_test_opus_encode_SOURCES = tests/test_opus_encode.c tests/test_opus_common.h
+@EXTRA_PROGRAMS_TRUE@tests_test_opus_encode_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+@EXTRA_PROGRAMS_TRUE@tests_test_opus_decode_SOURCES = tests/test_opus_decode.c tests/test_opus_common.h
+@EXTRA_PROGRAMS_TRUE@tests_test_opus_decode_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+@EXTRA_PROGRAMS_TRUE@tests_test_opus_padding_SOURCES = tests/test_opus_padding.c tests/test_opus_common.h
+@EXTRA_PROGRAMS_TRUE@tests_test_opus_padding_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_cwrs32_SOURCES = celt/tests/test_unit_cwrs32.c
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_cwrs32_LDADD = $(LIBM)
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_dft_SOURCES = celt/tests/test_unit_dft.c
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_dft_LDADD = $(NE10_LIBS) \
+@EXTRA_PROGRAMS_TRUE@ $(LIBM) $(am__append_15)
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_entropy_SOURCES = celt/tests/test_unit_entropy.c
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_entropy_LDADD = $(LIBM)
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_laplace_SOURCES = celt/tests/test_unit_laplace.c
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_laplace_LDADD = $(LIBM)
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_mathops_SOURCES = celt/tests/test_unit_mathops.c
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_mathops_LDADD = \
+@EXTRA_PROGRAMS_TRUE@ $(NE10_LIBS) $(LIBM) $(am__append_16)
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_mdct_SOURCES = celt/tests/test_unit_mdct.c
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_mdct_LDADD = $(NE10_LIBS) \
+@EXTRA_PROGRAMS_TRUE@ $(LIBM) $(am__append_17)
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_rotation_SOURCES = celt/tests/test_unit_rotation.c
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_rotation_LDADD = \
+@EXTRA_PROGRAMS_TRUE@ $(NE10_LIBS) $(LIBM) $(am__append_18)
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_types_SOURCES = celt/tests/test_unit_types.c
+@EXTRA_PROGRAMS_TRUE@celt_tests_test_unit_types_LDADD = $(LIBM)
+@CUSTOM_MODES_TRUE@@EXTRA_PROGRAMS_TRUE@opus_custom_demo_SOURCES = celt/opus_custom_demo.c
+@CUSTOM_MODES_TRUE@@EXTRA_PROGRAMS_TRUE@opus_custom_demo_LDADD = libopus.la $(LIBM)
+EXTRA_DIST = version.mk \
+ opus.pc.in \
+ opus-uninstalled.pc.in \
+ opus.m4 \
+ Makefile.mips \
+ Makefile.unix \
+ tests/run_vectors.sh \
+ celt/arm/arm2gnu.pl \
+ celt/arm/celt_pitch_xcorr_arm.s \
+ win32/VS2015/silk_float.vcxproj \
+ win32/VS2015/celt.vcxproj.filters \
+ win32/VS2015/opus.vcxproj \
+ win32/VS2015/silk_common.vcxproj.filters \
+ win32/VS2015/silk_float.vcxproj.filters \
+ win32/VS2015/test_opus_encode.vcxproj.filters \
+ win32/VS2015/silk_common.vcxproj \
+ win32/VS2015/test_opus_encode.vcxproj \
+ win32/VS2015/opus_demo.vcxproj \
+ win32/VS2015/test_opus_api.vcxproj.filters \
+ win32/VS2015/test_opus_api.vcxproj \
+ win32/VS2015/test_opus_decode.vcxproj.filters \
+ win32/VS2015/silk_fixed.vcxproj.filters \
+ win32/VS2015/opus_demo.vcxproj.filters \
+ win32/VS2015/silk_fixed.vcxproj \
+ win32/VS2015/opus.vcxproj.filters \
+ win32/VS2015/test_opus_decode.vcxproj \
+ win32/VS2015/celt.vcxproj \
+ win32/VS2015/opus.sln \
+ win32/genversion.bat \
+ win32/config.h
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = opus.pc
+m4datadir = $(datadir)/aclocal
+m4data_DATA = opus.m4
+OPT_UNIT_TEST_OBJ = $(celt_tests_test_unit_mathops_SOURCES:.c=.o) \
+ $(celt_tests_test_unit_rotation_SOURCES:.c=.o) \
+ $(celt_tests_test_unit_mdct_SOURCES:.c=.o) \
+ $(celt_tests_test_unit_dft_SOURCES:.c=.o)
+
+@HAVE_SSE_TRUE@SSE_OBJ = $(CELT_SOURCES_SSE:.c=.lo)
+@HAVE_SSE2_TRUE@SSE2_OBJ = $(CELT_SOURCES_SSE2:.c=.lo)
+@HAVE_SSE4_1_TRUE@SSE4_1_OBJ = $(CELT_SOURCES_SSE4_1:.c=.lo) \
+@HAVE_SSE4_1_TRUE@ $(SILK_SOURCES_SSE4_1:.c=.lo) \
+@HAVE_SSE4_1_TRUE@ $(SILK_SOURCES_FIXED_SSE4_1:.c=.lo)
+
+@HAVE_ARM_NEON_INTR_TRUE@ARM_NEON_INTR_OBJ = $(CELT_SOURCES_ARM_NEON_INTR:.c=.lo) $(SILK_SOURCES_ARM_NEON_INTR:.c=.lo)
+all: $(BUILT_SOURCES) config.h
+ $(MAKE) $(AM_MAKEFLAGS) all-recursive
+
+.SUFFIXES:
+.SUFFIXES: .S .c .lo .log .o .obj .test .test$(EXEEXT) .trs
+am--refresh: Makefile
+ @:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(srcdir)/celt_sources.mk $(srcdir)/silk_sources.mk $(srcdir)/opus_sources.mk $(srcdir)/celt_headers.mk $(srcdir)/silk_headers.mk $(srcdir)/opus_headers.mk $(am__configure_deps)
+ @for dep in $?; do \
+ case '$(am__configure_deps)' in \
+ *$$dep*) \
+ echo ' cd $(srcdir) && $(AUTOMAKE) --gnu'; \
+ $(am__cd) $(srcdir) && $(AUTOMAKE) --gnu \
+ && exit 0; \
+ exit 1;; \
+ esac; \
+ done; \
+ echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu Makefile'; \
+ $(am__cd) $(top_srcdir) && \
+ $(AUTOMAKE) --gnu Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+ @case '$?' in \
+ *config.status*) \
+ echo ' $(SHELL) ./config.status'; \
+ $(SHELL) ./config.status;; \
+ *) \
+ echo ' cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe)'; \
+ cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe);; \
+ esac;
+$(srcdir)/celt_sources.mk $(srcdir)/silk_sources.mk $(srcdir)/opus_sources.mk $(srcdir)/celt_headers.mk $(srcdir)/silk_headers.mk $(srcdir)/opus_headers.mk $(am__empty):
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+ $(SHELL) ./config.status --recheck
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+ $(am__cd) $(srcdir) && $(AUTOCONF)
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+ $(am__cd) $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS)
+$(am__aclocal_m4_deps):
+
+config.h: stamp-h1
+ @test -f $@ || rm -f stamp-h1
+ @test -f $@ || $(MAKE) $(AM_MAKEFLAGS) stamp-h1
+
+stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
+ @rm -f stamp-h1
+ cd $(top_builddir) && $(SHELL) ./config.status config.h
+$(srcdir)/config.h.in: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+ ($(am__cd) $(top_srcdir) && $(AUTOHEADER))
+ rm -f stamp-h1
+ touch $@
+
+distclean-hdr:
+ -rm -f config.h stamp-h1
+opus.pc: $(top_builddir)/config.status $(srcdir)/opus.pc.in
+ cd $(top_builddir) && $(SHELL) ./config.status $@
+opus-uninstalled.pc: $(top_builddir)/config.status $(srcdir)/opus-uninstalled.pc.in
+ cd $(top_builddir) && $(SHELL) ./config.status $@
+celt/arm/armopts.s: $(top_builddir)/config.status $(top_srcdir)/celt/arm/armopts.s.in
+ cd $(top_builddir) && $(SHELL) ./config.status $@
+
+install-libLTLIBRARIES: $(lib_LTLIBRARIES)
+ @$(NORMAL_INSTALL)
+ @list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
+ list2=; for p in $$list; do \
+ if test -f $$p; then \
+ list2="$$list2 $$p"; \
+ else :; fi; \
+ done; \
+ test -z "$$list2" || { \
+ echo " $(MKDIR_P) '$(DESTDIR)$(libdir)'"; \
+ $(MKDIR_P) "$(DESTDIR)$(libdir)" || exit 1; \
+ echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(libdir)'"; \
+ $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(libdir)"; \
+ }
+
+uninstall-libLTLIBRARIES:
+ @$(NORMAL_UNINSTALL)
+ @list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
+ for p in $$list; do \
+ $(am__strip_dir) \
+ echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$f'"; \
+ $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/$$f"; \
+ done
+
+clean-libLTLIBRARIES:
+ -test -z "$(lib_LTLIBRARIES)" || rm -f $(lib_LTLIBRARIES)
+ @list='$(lib_LTLIBRARIES)'; \
+ locs=`for p in $$list; do echo $$p; done | \
+ sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+ sort -u`; \
+ test -z "$$locs" || { \
+ echo rm -f $${locs}; \
+ rm -f $${locs}; \
+ }
+
+clean-noinstLTLIBRARIES:
+ -test -z "$(noinst_LTLIBRARIES)" || rm -f $(noinst_LTLIBRARIES)
+ @list='$(noinst_LTLIBRARIES)'; \
+ locs=`for p in $$list; do echo $$p; done | \
+ sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+ sort -u`; \
+ test -z "$$locs" || { \
+ echo rm -f $${locs}; \
+ rm -f $${locs}; \
+ }
+celt/arm/$(am__dirstamp):
+ @$(MKDIR_P) celt/arm
+ @: > celt/arm/$(am__dirstamp)
+celt/arm/$(DEPDIR)/$(am__dirstamp):
+ @$(MKDIR_P) celt/arm/$(DEPDIR)
+ @: > celt/arm/$(DEPDIR)/$(am__dirstamp)
+celt/arm/celt_pitch_xcorr_arm-gnu.lo: celt/arm/$(am__dirstamp) \
+ celt/arm/$(DEPDIR)/$(am__dirstamp)
+
+libarmasm.la: $(libarmasm_la_OBJECTS) $(libarmasm_la_DEPENDENCIES) $(EXTRA_libarmasm_la_DEPENDENCIES)
+ $(AM_V_CCLD)$(LINK) $(am_libarmasm_la_rpath) $(libarmasm_la_OBJECTS) $(libarmasm_la_LIBADD) $(LIBS)
+celt/$(am__dirstamp):
+ @$(MKDIR_P) celt
+ @: > celt/$(am__dirstamp)
+celt/$(DEPDIR)/$(am__dirstamp):
+ @$(MKDIR_P) celt/$(DEPDIR)
+ @: > celt/$(DEPDIR)/$(am__dirstamp)
+celt/bands.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/celt.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/celt_encoder.lo: celt/$(am__dirstamp) \
+ celt/$(DEPDIR)/$(am__dirstamp)
+celt/celt_decoder.lo: celt/$(am__dirstamp) \
+ celt/$(DEPDIR)/$(am__dirstamp)
+celt/cwrs.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/entcode.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/entdec.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/entenc.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/kiss_fft.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/laplace.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/mathops.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/mdct.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/modes.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/pitch.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/celt_lpc.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/quant_bands.lo: celt/$(am__dirstamp) \
+ celt/$(DEPDIR)/$(am__dirstamp)
+celt/rate.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/vq.lo: celt/$(am__dirstamp) celt/$(DEPDIR)/$(am__dirstamp)
+celt/x86/$(am__dirstamp):
+ @$(MKDIR_P) celt/x86
+ @: > celt/x86/$(am__dirstamp)
+celt/x86/$(DEPDIR)/$(am__dirstamp):
+ @$(MKDIR_P) celt/x86/$(DEPDIR)
+ @: > celt/x86/$(DEPDIR)/$(am__dirstamp)
+celt/x86/x86cpu.lo: celt/x86/$(am__dirstamp) \
+ celt/x86/$(DEPDIR)/$(am__dirstamp)
+celt/x86/x86_celt_map.lo: celt/x86/$(am__dirstamp) \
+ celt/x86/$(DEPDIR)/$(am__dirstamp)
+celt/x86/pitch_sse.lo: celt/x86/$(am__dirstamp) \
+ celt/x86/$(DEPDIR)/$(am__dirstamp)
+celt/x86/pitch_sse2.lo: celt/x86/$(am__dirstamp) \
+ celt/x86/$(DEPDIR)/$(am__dirstamp)
+celt/x86/celt_lpc_sse.lo: celt/x86/$(am__dirstamp) \
+ celt/x86/$(DEPDIR)/$(am__dirstamp)
+celt/x86/pitch_sse4_1.lo: celt/x86/$(am__dirstamp) \
+ celt/x86/$(DEPDIR)/$(am__dirstamp)
+celt/arm/armcpu.lo: celt/arm/$(am__dirstamp) \
+ celt/arm/$(DEPDIR)/$(am__dirstamp)
+celt/arm/arm_celt_map.lo: celt/arm/$(am__dirstamp) \
+ celt/arm/$(DEPDIR)/$(am__dirstamp)
+celt/arm/celt_neon_intr.lo: celt/arm/$(am__dirstamp) \
+ celt/arm/$(DEPDIR)/$(am__dirstamp)
+celt/arm/celt_ne10_fft.lo: celt/arm/$(am__dirstamp) \
+ celt/arm/$(DEPDIR)/$(am__dirstamp)
+celt/arm/celt_ne10_mdct.lo: celt/arm/$(am__dirstamp) \
+ celt/arm/$(DEPDIR)/$(am__dirstamp)
+silk/$(am__dirstamp):
+ @$(MKDIR_P) silk
+ @: > silk/$(am__dirstamp)
+silk/$(DEPDIR)/$(am__dirstamp):
+ @$(MKDIR_P) silk/$(DEPDIR)
+ @: > silk/$(DEPDIR)/$(am__dirstamp)
+silk/CNG.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/code_signs.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/init_decoder.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/decode_core.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/decode_frame.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/decode_parameters.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/decode_indices.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/decode_pulses.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/decoder_set_fs.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/dec_API.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/enc_API.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/encode_indices.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/encode_pulses.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/gain_quant.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/interpolate.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/LP_variable_cutoff.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/NLSF_decode.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/NSQ.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/NSQ_del_dec.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/PLC.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/shell_coder.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/tables_gain.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/tables_LTP.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/tables_NLSF_CB_NB_MB.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/tables_NLSF_CB_WB.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/tables_other.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/tables_pitch_lag.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/tables_pulses_per_block.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/VAD.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/control_audio_bandwidth.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/quant_LTP_gains.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/VQ_WMat_EC.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/HP_variable_cutoff.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/NLSF_encode.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/NLSF_VQ.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/NLSF_unpack.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/NLSF_del_dec_quant.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/process_NLSFs.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/stereo_LR_to_MS.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/stereo_MS_to_LR.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/check_control_input.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/control_SNR.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/init_encoder.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/control_codec.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/A2NLSF.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/ana_filt_bank_1.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/biquad_alt.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/bwexpander_32.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/bwexpander.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/debug.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/decode_pitch.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/inner_prod_aligned.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/lin2log.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/log2lin.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/LPC_analysis_filter.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/LPC_inv_pred_gain.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/table_LSF_cos.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/NLSF2A.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/NLSF_stabilize.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/NLSF_VQ_weights_laroia.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/pitch_est_tables.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/resampler.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/resampler_down2_3.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/resampler_down2.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/resampler_private_AR2.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/resampler_private_down_FIR.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/resampler_private_IIR_FIR.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/resampler_private_up2_HQ.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/resampler_rom.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/sigm_Q15.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/sort.lo: silk/$(am__dirstamp) silk/$(DEPDIR)/$(am__dirstamp)
+silk/sum_sqr_shift.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/stereo_decode_pred.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/stereo_encode_pred.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/stereo_find_predictor.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/stereo_quant_pred.lo: silk/$(am__dirstamp) \
+ silk/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/$(am__dirstamp):
+ @$(MKDIR_P) silk/fixed
+ @: > silk/fixed/$(am__dirstamp)
+silk/fixed/$(DEPDIR)/$(am__dirstamp):
+ @$(MKDIR_P) silk/fixed/$(DEPDIR)
+ @: > silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/LTP_analysis_filter_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/LTP_scale_ctrl_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/corrMatrix_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/encode_frame_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/find_LPC_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/find_LTP_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/find_pitch_lags_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/find_pred_coefs_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/noise_shape_analysis_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/prefilter_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/process_gains_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/regularize_correlations_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/residual_energy16_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/residual_energy_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/solve_LS_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/warped_autocorrelation_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/apply_sine_window_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/autocorr_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/burg_modified_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/k2a_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/k2a_Q16_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/pitch_analysis_core_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/vector_ops_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/schur64_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/schur_FIX.lo: silk/fixed/$(am__dirstamp) \
+ silk/fixed/$(DEPDIR)/$(am__dirstamp)
+silk/x86/$(am__dirstamp):
+ @$(MKDIR_P) silk/x86
+ @: > silk/x86/$(am__dirstamp)
+silk/x86/$(DEPDIR)/$(am__dirstamp):
+ @$(MKDIR_P) silk/x86/$(DEPDIR)
+ @: > silk/x86/$(DEPDIR)/$(am__dirstamp)
+silk/x86/NSQ_sse.lo: silk/x86/$(am__dirstamp) \
+ silk/x86/$(DEPDIR)/$(am__dirstamp)
+silk/x86/NSQ_del_dec_sse.lo: silk/x86/$(am__dirstamp) \
+ silk/x86/$(DEPDIR)/$(am__dirstamp)
+silk/x86/x86_silk_map.lo: silk/x86/$(am__dirstamp) \
+ silk/x86/$(DEPDIR)/$(am__dirstamp)
+silk/x86/VAD_sse.lo: silk/x86/$(am__dirstamp) \
+ silk/x86/$(DEPDIR)/$(am__dirstamp)
+silk/x86/VQ_WMat_EC_sse.lo: silk/x86/$(am__dirstamp) \
+ silk/x86/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/x86/$(am__dirstamp):
+ @$(MKDIR_P) silk/fixed/x86
+ @: > silk/fixed/x86/$(am__dirstamp)
+silk/fixed/x86/$(DEPDIR)/$(am__dirstamp):
+ @$(MKDIR_P) silk/fixed/x86/$(DEPDIR)
+ @: > silk/fixed/x86/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/x86/vector_ops_FIX_sse.lo: silk/fixed/x86/$(am__dirstamp) \
+ silk/fixed/x86/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/x86/burg_modified_FIX_sse.lo: \
+ silk/fixed/x86/$(am__dirstamp) \
+ silk/fixed/x86/$(DEPDIR)/$(am__dirstamp)
+silk/fixed/x86/prefilter_FIX_sse.lo: silk/fixed/x86/$(am__dirstamp) \
+ silk/fixed/x86/$(DEPDIR)/$(am__dirstamp)
+silk/float/$(am__dirstamp):
+ @$(MKDIR_P) silk/float
+ @: > silk/float/$(am__dirstamp)
+silk/float/$(DEPDIR)/$(am__dirstamp):
+ @$(MKDIR_P) silk/float/$(DEPDIR)
+ @: > silk/float/$(DEPDIR)/$(am__dirstamp)
+silk/float/apply_sine_window_FLP.lo: silk/float/$(am__dirstamp) \
+ silk/float/$(DEPDIR)/$(am__dirstamp)
+silk/float/corrMatrix_FLP.lo: silk/float/$(am__dirstamp) \
+ silk/float/$(DEPDIR)/$(am__dirstamp)
+silk/float/encode_frame_FLP.lo: silk/float/$(am__dirstamp) \
+ silk/float/$(DEPDIR)/$(am__dirstamp)
+silk/float/find_LPC_FLP.lo: silk/float/$(am__dirstamp) \
+ silk/float/$(DEPDIR)/$(am__dirstamp)
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+dist-shar: distdir
+ @echo WARNING: "Support for shar distribution archives is" \
+ "deprecated." >&2
+ @echo WARNING: "It will be removed altogether in Automake 2.0" >&2
+ shar $(distdir) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).shar.gz
+ $(am__post_remove_distdir)
+
+dist-zip: distdir
+ -rm -f $(distdir).zip
+ zip -rq $(distdir).zip $(distdir)
+ $(am__post_remove_distdir)
+
+dist dist-all:
+ $(MAKE) $(AM_MAKEFLAGS) $(DIST_TARGETS) am__post_remove_distdir='@:'
+ $(am__post_remove_distdir)
+
+# This target untars the dist file and tries a VPATH configuration. Then
+# it guarantees that the distribution is self-contained by making another
+# tarfile.
+distcheck: dist
+ case '$(DIST_ARCHIVES)' in \
+ *.tar.gz*) \
+ GZIP=$(GZIP_ENV) gzip -dc $(distdir).tar.gz | $(am__untar) ;;\
+ *.tar.bz2*) \
+ bzip2 -dc $(distdir).tar.bz2 | $(am__untar) ;;\
+ *.tar.lz*) \
+ lzip -dc $(distdir).tar.lz | $(am__untar) ;;\
+ *.tar.xz*) \
+ xz -dc $(distdir).tar.xz | $(am__untar) ;;\
+ *.tar.Z*) \
+ uncompress -c $(distdir).tar.Z | $(am__untar) ;;\
+ *.shar.gz*) \
+ GZIP=$(GZIP_ENV) gzip -dc $(distdir).shar.gz | unshar ;;\
+ *.zip*) \
+ unzip $(distdir).zip ;;\
+ esac
+ chmod -R a-w $(distdir)
+ chmod u+w $(distdir)
+ mkdir $(distdir)/_build $(distdir)/_build/sub $(distdir)/_inst
+ chmod a-w $(distdir)
+ test -d $(distdir)/_build || exit 0; \
+ dc_install_base=`$(am__cd) $(distdir)/_inst && pwd | sed -e 's,^[^:\\/]:[\\/],/,'` \
+ && dc_destdir="$${TMPDIR-/tmp}/am-dc-$$$$/" \
+ && am__cwd=`pwd` \
+ && $(am__cd) $(distdir)/_build/sub \
+ && ../../configure \
+ $(AM_DISTCHECK_CONFIGURE_FLAGS) \
+ $(DISTCHECK_CONFIGURE_FLAGS) \
+ --srcdir=../.. --prefix="$$dc_install_base" \
+ && $(MAKE) $(AM_MAKEFLAGS) \
+ && $(MAKE) $(AM_MAKEFLAGS) dvi \
+ && $(MAKE) $(AM_MAKEFLAGS) check \
+ && $(MAKE) $(AM_MAKEFLAGS) install \
+ && $(MAKE) $(AM_MAKEFLAGS) installcheck \
+ && $(MAKE) $(AM_MAKEFLAGS) uninstall \
+ && $(MAKE) $(AM_MAKEFLAGS) distuninstallcheck_dir="$$dc_install_base" \
+ distuninstallcheck \
+ && chmod -R a-w "$$dc_install_base" \
+ && ({ \
+ (cd ../.. && umask 077 && mkdir "$$dc_destdir") \
+ && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" install \
+ && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" uninstall \
+ && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" \
+ distuninstallcheck_dir="$$dc_destdir" distuninstallcheck; \
+ } || { rm -rf "$$dc_destdir"; exit 1; }) \
+ && rm -rf "$$dc_destdir" \
+ && $(MAKE) $(AM_MAKEFLAGS) dist \
+ && rm -rf $(DIST_ARCHIVES) \
+ && $(MAKE) $(AM_MAKEFLAGS) distcleancheck \
+ && cd "$$am__cwd" \
+ || exit 1
+ $(am__post_remove_distdir)
+ @(echo "$(distdir) archives ready for distribution: "; \
+ list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
+ sed -e 1h -e 1s/./=/g -e 1p -e 1x -e '$$p' -e '$$x'
+distuninstallcheck:
+ @test -n '$(distuninstallcheck_dir)' || { \
+ echo 'ERROR: trying to run $@ with an empty' \
+ '$$(distuninstallcheck_dir)' >&2; \
+ exit 1; \
+ }; \
+ $(am__cd) '$(distuninstallcheck_dir)' || { \
+ echo 'ERROR: cannot chdir into $(distuninstallcheck_dir)' >&2; \
+ exit 1; \
+ }; \
+ test `$(am__distuninstallcheck_listfiles) | wc -l` -eq 0 \
+ || { echo "ERROR: files left after uninstall:" ; \
+ if test -n "$(DESTDIR)"; then \
+ echo " (check DESTDIR support)"; \
+ fi ; \
+ $(distuninstallcheck_listfiles) ; \
+ exit 1; } >&2
+distcleancheck: distclean
+ @if test '$(srcdir)' = . ; then \
+ echo "ERROR: distcleancheck can only run from a VPATH build" ; \
+ exit 1 ; \
+ fi
+ @test `$(distcleancheck_listfiles) | wc -l` -eq 0 \
+ || { echo "ERROR: files left in build directory after distclean:" ; \
+ $(distcleancheck_listfiles) ; \
+ exit 1; } >&2
+check-am: all-am
+ $(MAKE) $(AM_MAKEFLAGS) check-TESTS
+check: $(BUILT_SOURCES)
+ $(MAKE) $(AM_MAKEFLAGS) check-recursive
+all-am: Makefile $(LTLIBRARIES) $(PROGRAMS) $(DATA) $(HEADERS) \
+ config.h all-local
+installdirs: installdirs-recursive
+installdirs-am:
+ for dir in "$(DESTDIR)$(libdir)" "$(DESTDIR)$(m4datadir)" "$(DESTDIR)$(pkgconfigdir)" "$(DESTDIR)$(pkgincludedir)"; do \
+ test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+ done
+install: $(BUILT_SOURCES)
+ $(MAKE) $(AM_MAKEFLAGS) install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
+
+install-am: all-am
+ @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+ if test -z '$(STRIP)'; then \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ install; \
+ else \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+ fi
+mostlyclean-generic:
+ -test -z "$(TEST_LOGS)" || rm -f $(TEST_LOGS)
+ -test -z "$(TEST_LOGS:.log=.trs)" || rm -f $(TEST_LOGS:.log=.trs)
+ -test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+
+clean-generic:
+ -test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+ -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+ -rm -f celt/$(DEPDIR)/$(am__dirstamp)
+ -rm -f celt/$(am__dirstamp)
+ -rm -f celt/arm/$(DEPDIR)/$(am__dirstamp)
+ -rm -f celt/arm/$(am__dirstamp)
+ -rm -f celt/tests/$(DEPDIR)/$(am__dirstamp)
+ -rm -f celt/tests/$(am__dirstamp)
+ -rm -f celt/x86/$(DEPDIR)/$(am__dirstamp)
+ -rm -f celt/x86/$(am__dirstamp)
+ -rm -f silk/$(DEPDIR)/$(am__dirstamp)
+ -rm -f silk/$(am__dirstamp)
+ -rm -f silk/arm/$(DEPDIR)/$(am__dirstamp)
+ -rm -f silk/arm/$(am__dirstamp)
+ -rm -f silk/fixed/$(DEPDIR)/$(am__dirstamp)
+ -rm -f silk/fixed/$(am__dirstamp)
+ -rm -f silk/fixed/x86/$(DEPDIR)/$(am__dirstamp)
+ -rm -f silk/fixed/x86/$(am__dirstamp)
+ -rm -f silk/float/$(DEPDIR)/$(am__dirstamp)
+ -rm -f silk/float/$(am__dirstamp)
+ -rm -f silk/x86/$(DEPDIR)/$(am__dirstamp)
+ -rm -f silk/x86/$(am__dirstamp)
+ -rm -f src/$(DEPDIR)/$(am__dirstamp)
+ -rm -f src/$(am__dirstamp)
+ -rm -f tests/$(DEPDIR)/$(am__dirstamp)
+ -rm -f tests/$(am__dirstamp)
+
+maintainer-clean-generic:
+ @echo "This command is intended for maintainers to use"
+ @echo "it deletes files that may require special tools to rebuild."
+ -test -z "$(BUILT_SOURCES)" || rm -f $(BUILT_SOURCES)
+clean: clean-recursive
+
+clean-am: clean-generic clean-libLTLIBRARIES clean-libtool clean-local \
+ clean-noinstLTLIBRARIES clean-noinstPROGRAMS mostlyclean-am
+
+distclean: distclean-recursive
+ -rm -f $(am__CONFIG_DISTCLEAN_FILES)
+ -rm -rf celt/$(DEPDIR) celt/arm/$(DEPDIR) celt/tests/$(DEPDIR) celt/x86/$(DEPDIR) silk/$(DEPDIR) silk/arm/$(DEPDIR) silk/fixed/$(DEPDIR) silk/fixed/x86/$(DEPDIR) silk/float/$(DEPDIR) silk/x86/$(DEPDIR) src/$(DEPDIR) tests/$(DEPDIR)
+ -rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+ distclean-hdr distclean-libtool distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
+
+html-am:
+
+info: info-recursive
+
+info-am:
+
+install-data-am: install-data-local install-m4dataDATA \
+ install-pkgconfigDATA install-pkgincludeHEADERS
+
+install-dvi: install-dvi-recursive
+
+install-dvi-am:
+
+install-exec-am: install-libLTLIBRARIES
+
+install-html: install-html-recursive
+
+install-html-am:
+
+install-info: install-info-recursive
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+ -rm -f $(am__CONFIG_DISTCLEAN_FILES)
+ -rm -rf $(top_srcdir)/autom4te.cache
+ -rm -rf celt/$(DEPDIR) celt/arm/$(DEPDIR) celt/tests/$(DEPDIR) celt/x86/$(DEPDIR) silk/$(DEPDIR) silk/arm/$(DEPDIR) silk/fixed/$(DEPDIR) silk/fixed/x86/$(DEPDIR) silk/float/$(DEPDIR) silk/x86/$(DEPDIR) src/$(DEPDIR) tests/$(DEPDIR)
+ -rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+ mostlyclean-libtool
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am: uninstall-libLTLIBRARIES uninstall-local \
+ uninstall-m4dataDATA uninstall-pkgconfigDATA \
+ uninstall-pkgincludeHEADERS
+
+.MAKE: $(am__recursive_targets) all check check-am install install-am \
+ install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am all-local \
+ am--refresh check check-TESTS check-am clean clean-cscope \
+ clean-generic clean-libLTLIBRARIES clean-libtool clean-local \
+ clean-noinstLTLIBRARIES clean-noinstPROGRAMS cscope \
+ cscopelist-am ctags ctags-am dist dist-all dist-bzip2 \
+ dist-gzip dist-hook dist-lzip dist-shar dist-tarZ dist-xz \
+ dist-zip distcheck distclean distclean-compile \
+ distclean-generic distclean-hdr distclean-libtool \
+ distclean-tags distcleancheck distdir distuninstallcheck dvi \
+ dvi-am html html-am info info-am install install-am \
+ install-data install-data-am install-data-local install-dvi \
+ install-dvi-am install-exec install-exec-am install-html \
+ install-html-am install-info install-info-am \
+ install-libLTLIBRARIES install-m4dataDATA install-man \
+ install-pdf install-pdf-am install-pkgconfigDATA \
+ install-pkgincludeHEADERS install-ps install-ps-am \
+ install-strip installcheck installcheck-am installdirs \
+ installdirs-am maintainer-clean maintainer-clean-generic \
+ mostlyclean mostlyclean-compile mostlyclean-generic \
+ mostlyclean-libtool pdf pdf-am ps ps-am recheck tags tags-am \
+ uninstall uninstall-am uninstall-libLTLIBRARIES \
+ uninstall-local uninstall-m4dataDATA uninstall-pkgconfigDATA \
+ uninstall-pkgincludeHEADERS
+
+.PRECIOUS: Makefile
+
+
+# Provide the full test output for failed tests when using the parallel
+# test suite (which is enabled by default with automake 1.13+).
+export VERBOSE = yes
+
+# Targets to build and install just the library without the docs
+opus check-opus install-opus: export NO_DOXYGEN = 1
+
+opus: all
+check-opus: check
+install-opus: install
+
+# Or just the docs
+docs:
+ ( cd doc && $(MAKE) $(AM_MAKEFLAGS) )
+
+install-docs:
+ ( cd doc && $(MAKE) $(AM_MAKEFLAGS) install )
+
+# Or everything (by default)
+all-local:
+ @[ -n "$(NO_DOXYGEN)" ] || ( cd doc && $(MAKE) $(AM_MAKEFLAGS) )
+
+install-data-local:
+ @[ -n "$(NO_DOXYGEN)" ] || ( cd doc && $(MAKE) $(AM_MAKEFLAGS) install )
+
+clean-local:
+ -( cd doc && $(MAKE) $(AM_MAKEFLAGS) clean )
+
+uninstall-local:
+ ( cd doc && $(MAKE) $(AM_MAKEFLAGS) uninstall )
+
+# We check this every time make is run, with configure.ac being touched to
+# trigger an update of the build system files if update_version changes the
+# current PACKAGE_VERSION (or if package_version was modified manually by a
+# user with either AUTO_UPDATE=no or no update_version script present - the
+# latter being the normal case for tarball releases).
+#
+# We can't just add the package_version file to CONFIGURE_DEPENDENCIES since
+# simply running autoconf will not actually regenerate configure for us when
+# the content of that file changes (due to autoconf dependency checking not
+# knowing about that without us creating yet another file for it to include).
+#
+# The MAKECMDGOALS check is a gnu-make'ism, but will degrade 'gracefully' for
+# makes that don't support it. The only loss of functionality is not forcing
+# an update of package_version for `make dist` if AUTO_UPDATE=no, but that is
+# unlikely to be a real problem for any real user.
+$(top_srcdir)/configure.ac: force
+ @case "$(MAKECMDGOALS)" in \
+ dist-hook) exit 0 ;; \
+ dist-* | dist | distcheck | distclean) _arg=release ;; \
+ esac; \
+ if ! $(top_srcdir)/update_version $$_arg 2> /dev/null; then \
+ if [ ! -e $(top_srcdir)/package_version ]; then \
+ echo 'PACKAGE_VERSION="unknown"' > $(top_srcdir)/package_version; \
+ fi; \
+ . $(top_srcdir)/package_version || exit 1; \
+ [ "$(PACKAGE_VERSION)" != "$$PACKAGE_VERSION" ] || exit 0; \
+ fi; \
+ touch $@
+
+force:
+
+# Create a minimal package_version file when make dist is run.
+dist-hook:
+ echo 'PACKAGE_VERSION="$(PACKAGE_VERSION)"' > $(top_distdir)/package_version
+
+.PHONY: opus check-opus install-opus docs install-docs
+
+# automake doesn't do dependency tracking for asm files, that I can tell
+$(CELT_SOURCES_ARM_ASM:%.s=%-gnu.S): celt/arm/armopts-gnu.S
+$(CELT_SOURCES_ARM_ASM:%.s=%-gnu.S): $(top_srcdir)/celt/arm/arm2gnu.pl
+
+# convert ARM asm to GNU as format
+%-gnu.S: $(top_srcdir)/%.s
+ $(top_srcdir)/celt/arm/arm2gnu.pl @ARM2GNU_PARAMS@ < $< > $@
+# For autoconf-modified sources (e.g., armopts.s)
+%-gnu.S: %.s
+ $(top_srcdir)/celt/arm/arm2gnu.pl @ARM2GNU_PARAMS@ < $< > $@
+@HAVE_SSE_TRUE@$(SSE_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += $(OPUS_X86_SSE_CFLAGS)
+@HAVE_SSE2_TRUE@$(SSE2_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += $(OPUS_X86_SSE2_CFLAGS)
+@HAVE_SSE4_1_TRUE@$(SSE4_1_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += $(OPUS_X86_SSE4_1_CFLAGS)
+@HAVE_ARM_NEON_INTR_TRUE@$(ARM_NEON_INTR_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += \
+@HAVE_ARM_NEON_INTR_TRUE@ $(OPUS_ARM_NEON_INTR_CFLAGS) $(NE10_CFLAGS)
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libopus/Makefile.mips b/libopus/Makefile.mips
new file mode 100644
index 0000000..56a5062
--- /dev/null
+++ b/libopus/Makefile.mips
@@ -0,0 +1,161 @@
+#################### COMPILE OPTIONS #######################
+
+# Uncomment this for fixed-point build
+FIXED_POINT=1
+
+# It is strongly recommended to uncomment one of these
+# VAR_ARRAYS: Use C99 variable-length arrays for stack allocation
+# USE_ALLOCA: Use alloca() for stack allocation
+# If none is defined, then the fallback is a non-threadsafe global array
+CFLAGS := -DUSE_ALLOCA $(CFLAGS)
+#CFLAGS := -DVAR_ARRAYS $(CFLAGS)
+
+# These options affect performance
+# HAVE_LRINTF: Use C99 intrinsics to speed up float-to-int conversion
+#CFLAGS := -DHAVE_LRINTF $(CFLAGS)
+
+###################### END OF OPTIONS ######################
+
+-include package_version
+
+include silk_sources.mk
+include celt_sources.mk
+include opus_sources.mk
+
+ifdef FIXED_POINT
+SILK_SOURCES += $(SILK_SOURCES_FIXED)
+else
+SILK_SOURCES += $(SILK_SOURCES_FLOAT)
+OPUS_SOURCES += $(OPUS_SOURCES_FLOAT)
+endif
+
+EXESUFFIX =
+LIBPREFIX = lib
+LIBSUFFIX = .a
+OBJSUFFIX = .o
+
+CC = $(TOOLCHAIN_PREFIX)cc$(TOOLCHAIN_SUFFIX)
+AR = $(TOOLCHAIN_PREFIX)ar
+RANLIB = $(TOOLCHAIN_PREFIX)ranlib
+CP = $(TOOLCHAIN_PREFIX)cp
+
+cppflags-from-defines = $(addprefix -D,$(1))
+cppflags-from-includes = $(addprefix -I,$(1))
+ldflags-from-ldlibdirs = $(addprefix -L,$(1))
+ldlibs-from-libs = $(addprefix -l,$(1))
+
+WARNINGS = -Wall -W -Wstrict-prototypes -Wextra -Wcast-align -Wnested-externs -Wshadow
+
+CFLAGS += -mips32r2 -mno-mips16 -std=gnu99 -O2 -g $(WARNINGS) -DENABLE_ASSERTIONS -DMIPSr1_ASM -DOPUS_BUILD -mdspr2 -march=74kc -mtune=74kc -mmt -mgp32
+
+CINCLUDES = include silk celt
+
+ifdef FIXED_POINT
+CFLAGS += -DFIXED_POINT=1 -DDISABLE_FLOAT_API
+CINCLUDES += silk/fixed
+else
+CINCLUDES += silk/float
+endif
+
+
+LIBS = m
+
+LDLIBDIRS = ./
+
+CFLAGS += $(call cppflags-from-defines,$(CDEFINES))
+CFLAGS += $(call cppflags-from-includes,$(CINCLUDES))
+LDFLAGS += $(call ldflags-from-ldlibdirs,$(LDLIBDIRS))
+LDLIBS += $(call ldlibs-from-libs,$(LIBS))
+
+COMPILE.c.cmdline = $(CC) -c $(CFLAGS) -o $@ $<
+LINK.o = $(CC) $(LDPREFLAGS) $(LDFLAGS)
+LINK.o.cmdline = $(LINK.o) $^ $(LDLIBS) -o $@$(EXESUFFIX)
+
+ARCHIVE.cmdline = $(AR) $(ARFLAGS) $@ $^ && $(RANLIB) $@
+
+%$(OBJSUFFIX):%.c
+ $(COMPILE.c.cmdline)
+
+%$(OBJSUFFIX):%.cpp
+ $(COMPILE.cpp.cmdline)
+
+# Directives
+
+
+# Variable definitions
+LIB_NAME = opus
+TARGET = $(LIBPREFIX)$(LIB_NAME)$(LIBSUFFIX)
+
+SRCS_C = $(SILK_SOURCES) $(CELT_SOURCES) $(OPUS_SOURCES)
+
+OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(SRCS_C))
+
+OPUSDEMO_SRCS_C = src/opus_demo.c
+OPUSDEMO_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(OPUSDEMO_SRCS_C))
+
+TESTOPUSAPI_SRCS_C = tests/test_opus_api.c
+TESTOPUSAPI_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSAPI_SRCS_C))
+
+TESTOPUSDECODE_SRCS_C = tests/test_opus_decode.c
+TESTOPUSDECODE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSDECODE_SRCS_C))
+
+TESTOPUSENCODE_SRCS_C = tests/test_opus_encode.c
+TESTOPUSENCODE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSENCODE_SRCS_C))
+
+TESTOPUSPADDING_SRCS_C = tests/test_opus_padding.c
+TESTOPUSPADDING_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSPADDING_SRCS_C))
+
+OPUSCOMPARE_SRCS_C = src/opus_compare.c
+OPUSCOMPARE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(OPUSCOMPARE_SRCS_C))
+
+TESTS := test_opus_api test_opus_decode test_opus_encode test_opus_padding
+
+# Rules
+all: lib opus_demo opus_compare $(TESTS)
+
+lib: $(TARGET)
+
+check: all
+ for test in $(TESTS); do ./$$test; done
+
+$(TARGET): $(OBJS)
+ $(ARCHIVE.cmdline)
+
+opus_demo$(EXESUFFIX): $(OPUSDEMO_OBJS) $(TARGET)
+ $(LINK.o.cmdline)
+
+test_opus_api$(EXESUFFIX): $(TESTOPUSAPI_OBJS) $(TARGET)
+ $(LINK.o.cmdline)
+
+test_opus_decode$(EXESUFFIX): $(TESTOPUSDECODE_OBJS) $(TARGET)
+ $(LINK.o.cmdline)
+
+test_opus_encode$(EXESUFFIX): $(TESTOPUSENCODE_OBJS) $(TARGET)
+ $(LINK.o.cmdline)
+
+test_opus_padding$(EXESUFFIX): $(TESTOPUSPADDING_OBJS) $(TARGET)
+ $(LINK.o.cmdline)
+
+opus_compare$(EXESUFFIX): $(OPUSCOMPARE_OBJS)
+ $(LINK.o.cmdline)
+
+celt/celt.o: CFLAGS += -DPACKAGE_VERSION='$(PACKAGE_VERSION)'
+celt/celt.o: package_version
+
+package_version: force
+ @if [ -x ./update_version ]; then \
+ ./update_version || true; \
+ elif [ ! -e ./package_version ]; then \
+ echo 'PACKAGE_VERSION="unknown"' > ./package_version; \
+ fi
+
+force:
+
+clean:
+ rm -f opus_demo$(EXESUFFIX) opus_compare$(EXESUFFIX) $(TARGET) \
+ test_opus_api$(EXESUFFIX) test_opus_decode$(EXESUFFIX) \
+ test_opus_encode$(EXESUFFIX) test_opus_padding$(EXESUFFIX) \
+ $(OBJS) $(OPUSDEMO_OBJS) $(OPUSCOMPARE_OBJS) $(TESTOPUSAPI_OBJS) \
+ $(TESTOPUSDECODE_OBJS) $(TESTOPUSENCODE_OBJS) $(TESTOPUSPADDING_OBJS)
+
+.PHONY: all lib clean force check
diff --git a/libopus/Makefile.unix b/libopus/Makefile.unix
new file mode 100644
index 0000000..b13230e
--- /dev/null
+++ b/libopus/Makefile.unix
@@ -0,0 +1,159 @@
+#################### COMPILE OPTIONS #######################
+
+# Uncomment this for fixed-point build
+#FIXED_POINT=1
+
+# It is strongly recommended to uncomment one of these
+# VAR_ARRAYS: Use C99 variable-length arrays for stack allocation
+# USE_ALLOCA: Use alloca() for stack allocation
+# If none is defined, then the fallback is a non-threadsafe global array
+CFLAGS := -DUSE_ALLOCA $(CFLAGS)
+#CFLAGS := -DVAR_ARRAYS $(CFLAGS)
+
+# These options affect performance
+# HAVE_LRINTF: Use C99 intrinsics to speed up float-to-int conversion
+#CFLAGS := -DHAVE_LRINTF $(CFLAGS)
+
+###################### END OF OPTIONS ######################
+
+-include package_version
+
+include silk_sources.mk
+include celt_sources.mk
+include opus_sources.mk
+
+ifdef FIXED_POINT
+SILK_SOURCES += $(SILK_SOURCES_FIXED)
+else
+SILK_SOURCES += $(SILK_SOURCES_FLOAT)
+OPUS_SOURCES += $(OPUS_SOURCES_FLOAT)
+endif
+
+EXESUFFIX =
+LIBPREFIX = lib
+LIBSUFFIX = .a
+OBJSUFFIX = .o
+
+CC = $(TOOLCHAIN_PREFIX)cc$(TOOLCHAIN_SUFFIX)
+AR = $(TOOLCHAIN_PREFIX)ar
+RANLIB = $(TOOLCHAIN_PREFIX)ranlib
+CP = $(TOOLCHAIN_PREFIX)cp
+
+cppflags-from-defines = $(addprefix -D,$(1))
+cppflags-from-includes = $(addprefix -I,$(1))
+ldflags-from-ldlibdirs = $(addprefix -L,$(1))
+ldlibs-from-libs = $(addprefix -l,$(1))
+
+WARNINGS = -Wall -W -Wstrict-prototypes -Wextra -Wcast-align -Wnested-externs -Wshadow
+CFLAGS += -O2 -g $(WARNINGS) -DOPUS_BUILD
+CINCLUDES = include silk celt
+
+ifdef FIXED_POINT
+CFLAGS += -DFIXED_POINT=1 -DDISABLE_FLOAT_API
+CINCLUDES += silk/fixed
+else
+CINCLUDES += silk/float
+endif
+
+
+LIBS = m
+
+LDLIBDIRS = ./
+
+CFLAGS += $(call cppflags-from-defines,$(CDEFINES))
+CFLAGS += $(call cppflags-from-includes,$(CINCLUDES))
+LDFLAGS += $(call ldflags-from-ldlibdirs,$(LDLIBDIRS))
+LDLIBS += $(call ldlibs-from-libs,$(LIBS))
+
+COMPILE.c.cmdline = $(CC) -c $(CFLAGS) -o $@ $<
+LINK.o = $(CC) $(LDPREFLAGS) $(LDFLAGS)
+LINK.o.cmdline = $(LINK.o) $^ $(LDLIBS) -o $@$(EXESUFFIX)
+
+ARCHIVE.cmdline = $(AR) $(ARFLAGS) $@ $^ && $(RANLIB) $@
+
+%$(OBJSUFFIX):%.c
+ $(COMPILE.c.cmdline)
+
+%$(OBJSUFFIX):%.cpp
+ $(COMPILE.cpp.cmdline)
+
+# Directives
+
+
+# Variable definitions
+LIB_NAME = opus
+TARGET = $(LIBPREFIX)$(LIB_NAME)$(LIBSUFFIX)
+
+SRCS_C = $(SILK_SOURCES) $(CELT_SOURCES) $(OPUS_SOURCES)
+
+OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(SRCS_C))
+
+OPUSDEMO_SRCS_C = src/opus_demo.c
+OPUSDEMO_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(OPUSDEMO_SRCS_C))
+
+TESTOPUSAPI_SRCS_C = tests/test_opus_api.c
+TESTOPUSAPI_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSAPI_SRCS_C))
+
+TESTOPUSDECODE_SRCS_C = tests/test_opus_decode.c
+TESTOPUSDECODE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSDECODE_SRCS_C))
+
+TESTOPUSENCODE_SRCS_C = tests/test_opus_encode.c
+TESTOPUSENCODE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSENCODE_SRCS_C))
+
+TESTOPUSPADDING_SRCS_C = tests/test_opus_padding.c
+TESTOPUSPADDING_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSPADDING_SRCS_C))
+
+OPUSCOMPARE_SRCS_C = src/opus_compare.c
+OPUSCOMPARE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(OPUSCOMPARE_SRCS_C))
+
+TESTS := test_opus_api test_opus_decode test_opus_encode test_opus_padding
+
+# Rules
+all: lib opus_demo opus_compare $(TESTS)
+
+lib: $(TARGET)
+
+check: all
+ for test in $(TESTS); do ./$$test; done
+
+$(TARGET): $(OBJS)
+ $(ARCHIVE.cmdline)
+
+opus_demo$(EXESUFFIX): $(OPUSDEMO_OBJS) $(TARGET)
+ $(LINK.o.cmdline)
+
+test_opus_api$(EXESUFFIX): $(TESTOPUSAPI_OBJS) $(TARGET)
+ $(LINK.o.cmdline)
+
+test_opus_decode$(EXESUFFIX): $(TESTOPUSDECODE_OBJS) $(TARGET)
+ $(LINK.o.cmdline)
+
+test_opus_encode$(EXESUFFIX): $(TESTOPUSENCODE_OBJS) $(TARGET)
+ $(LINK.o.cmdline)
+
+test_opus_padding$(EXESUFFIX): $(TESTOPUSPADDING_OBJS) $(TARGET)
+ $(LINK.o.cmdline)
+
+opus_compare$(EXESUFFIX): $(OPUSCOMPARE_OBJS)
+ $(LINK.o.cmdline)
+
+celt/celt.o: CFLAGS += -DPACKAGE_VERSION='$(PACKAGE_VERSION)'
+celt/celt.o: package_version
+
+package_version: force
+ @if [ -x ./update_version ]; then \
+ ./update_version || true; \
+ elif [ ! -e ./package_version ]; then \
+ echo 'PACKAGE_VERSION="unknown"' > ./package_version; \
+ fi
+
+force:
+
+clean:
+ rm -f opus_demo$(EXESUFFIX) opus_compare$(EXESUFFIX) $(TARGET) \
+ test_opus_api$(EXESUFFIX) test_opus_decode$(EXESUFFIX) \
+ test_opus_encode$(EXESUFFIX) test_opus_padding$(EXESUFFIX) \
+ $(OBJS) $(OPUSDEMO_OBJS) $(OPUSCOMPARE_OBJS) $(TESTOPUSAPI_OBJS) \
+ $(TESTOPUSDECODE_OBJS) $(TESTOPUSENCODE_OBJS) $(TESTOPUSPADDING_OBJS)
+
+.PHONY: all lib clean force check
diff --git a/libopus/NEWS b/libopus/NEWS
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libopus/NEWS
diff --git a/libopus/NOTICE b/libopus/NOTICE
new file mode 100644
index 0000000..108afb2
--- /dev/null
+++ b/libopus/NOTICE
@@ -0,0 +1,27 @@
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of Internet Society, IETF or IETF Trust, nor the
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/libopus/README b/libopus/README
new file mode 100644
index 0000000..ac6264e
--- /dev/null
+++ b/libopus/README
@@ -0,0 +1,142 @@
+== Opus audio codec ==
+
+Opus is a codec for interactive speech and audio transmission over the Internet.
+
+ Opus can handle a wide range of interactive audio applications, including
+Voice over IP, videoconferencing, in-game chat, and even remote live music
+performances. It can scale from low bit-rate narrowband speech to very high
+quality stereo music.
+
+ Opus, when coupled with an appropriate container format, is also suitable
+for non-realtime stored-file applications such as music distribution, game
+soundtracks, portable music players, jukeboxes, and other applications that
+have historically used high latency formats such as MP3, AAC, or Vorbis.
+
+ Opus is specified by IETF RFC 6716:
+ https://tools.ietf.org/html/rfc6716
+
+ The Opus format and this implementation of it are subject to the royalty-
+free patent and copyright licenses specified in the file COPYING.
+
+This package implements a shared library for encoding and decoding raw Opus
+bitstreams. Raw Opus bitstreams should be used over RTP according to
+ https://tools.ietf.org/html/rfc7587
+
+The package also includes a number of test tools used for testing the
+correct operation of the library. The bitstreams read/written by these
+tools should not be used for Opus file distribution: They include
+additional debugging data and cannot support seeking.
+
+Opus stored in files should use the Ogg encapsulation for Opus which is
+described at:
+ https://wiki.xiph.org/OggOpus
+
+An opus-tools package is available which provides encoding and decoding of
+Ogg encapsulated Opus files and includes a number of useful features.
+
+Opus-tools can be found at:
+ https://git.xiph.org/?p=opus-tools.git
+or on the main Opus website:
+ https://opus-codec.org/
+
+== Compiling libopus ==
+
+To build from a distribution tarball, you only need to do the following:
+
+% ./configure
+% make
+
+To build from the git repository, the following steps are necessary:
+
+1) Clone the repository:
+
+% git clone https://git.xiph.org/opus.git
+% cd opus
+
+2) Compiling the source
+
+% ./autogen.sh
+% ./configure
+% make
+
+3) Install the codec libraries (optional)
+
+% sudo make install
+
+Once you have compiled the codec, there will be a opus_demo executable
+in the top directory.
+
+Usage: opus_demo [-e] <application> <sampling rate (Hz)> <channels (1/2)>
+ <bits per second> [options] <input> <output>
+ opus_demo -d <sampling rate (Hz)> <channels (1/2)> [options]
+ <input> <output>
+
+mode: voip | audio | restricted-lowdelay
+options:
+ -e : only runs the encoder (output the bit-stream)
+ -d : only runs the decoder (reads the bit-stream as input)
+ -cbr : enable constant bitrate; default: variable bitrate
+ -cvbr : enable constrained variable bitrate; default:
+ unconstrained
+ -bandwidth <NB|MB|WB|SWB|FB>
+ : audio bandwidth (from narrowband to fullband);
+ default: sampling rate
+ -framesize <2.5|5|10|20|40|60>
+ : frame size in ms; default: 20
+ -max_payload <bytes>
+ : maximum payload size in bytes, default: 1024
+ -complexity <comp>
+ : complexity, 0 (lowest) ... 10 (highest); default: 10
+ -inbandfec : enable SILK inband FEC
+ -forcemono : force mono encoding, even for stereo input
+ -dtx : enable SILK DTX
+ -loss <perc> : simulate packet loss, in percent (0-100); default: 0
+
+input and output are little-endian signed 16-bit PCM files or opus
+bitstreams with simple opus_demo proprietary framing.
+
+== Testing ==
+
+This package includes a collection of automated unit and system tests
+which SHOULD be run after compiling the package especially the first
+time it is run on a new platform.
+
+To run the integrated tests:
+% make check
+
+There is also collection of standard test vectors which are not
+included in this package for size reasons but can be obtained from:
+https://opus-codec.org/testvectors/opus_testvectors.tar.gz
+
+To run compare the code to these test vectors:
+
+% curl -O https://opus-codec.org/testvectors/opus_testvectors.tar.gz
+% tar -zxf opus_testvectors.tar.gz
+% ./tests/run_vectors.sh ./ opus_testvectors 48000
+
+== Portability notes ==
+
+This implementation uses floating-point by default but can be compiled to
+use only fixed-point arithmetic by setting --enable-fixed-point (if using
+autoconf) or by defining the FIXED_POINT macro (if building manually).
+The fixed point implementation has somewhat lower audio quality and is
+slower on platforms with fast FPUs, it is normally only used in embedded
+environments.
+
+The implementation can be compiled with either a C89 or a C99 compiler.
+While it does not rely on any _undefined behavior_ as defined by C89 or
+C99, it relies on common _implementation-defined behavior_ for two's
+complement architectures:
+
+o Right shifts of negative values are consistent with two's
+ complement arithmetic, so that a>>b is equivalent to
+ floor(a/(2^b)),
+
+o For conversion to a signed integer of N bits, the value is reduced
+ modulo 2^N to be within range of the type,
+
+o The result of integer division of a negative value is truncated
+ towards zero, and
+
+o The compiler provides a 64-bit integer type (a C99 requirement
+ which is supported by most C89 compilers).
diff --git a/libopus/README.android b/libopus/README.android
new file mode 100644
index 0000000..471b28c
--- /dev/null
+++ b/libopus/README.android
@@ -0,0 +1,7 @@
+* current source is based on libopus 1.1.3 stable (http://downloads.xiph.org/releases/opus/opus-1.1.3.tar.gz)
+* libopus is BSD-licensed - http://www.opus-codec.org/license/
+
+Updating:
+* Run "convert_android_asm.sh" from the root of the library (external/libopus).
+ This uses 'arm2gnu.pl' included in libopus to convert ARM ASM files to GNU ASM
+ files for building under the Android NDK.
diff --git a/libopus/aclocal.m4 b/libopus/aclocal.m4
new file mode 100644
index 0000000..ca08e91
--- /dev/null
+++ b/libopus/aclocal.m4
@@ -0,0 +1,1215 @@
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+
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+
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diff --git a/libopus/celt/_kiss_fft_guts.h b/libopus/celt/_kiss_fft_guts.h
new file mode 100644
index 0000000..5e3d58f
--- /dev/null
+++ b/libopus/celt/_kiss_fft_guts.h
@@ -0,0 +1,182 @@
+/*Copyright (c) 2003-2004, Mark Borgerding
+
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.*/
+
+#ifndef KISS_FFT_GUTS_H
+#define KISS_FFT_GUTS_H
+
+#define MIN(a,b) ((a)<(b) ? (a):(b))
+#define MAX(a,b) ((a)>(b) ? (a):(b))
+
+/* kiss_fft.h
+ defines kiss_fft_scalar as either short or a float type
+ and defines
+ typedef struct { kiss_fft_scalar r; kiss_fft_scalar i; }kiss_fft_cpx; */
+#include "kiss_fft.h"
+
+/*
+ Explanation of macros dealing with complex math:
+
+ C_MUL(m,a,b) : m = a*b
+ C_FIXDIV( c , div ) : if a fixed point impl., c /= div. noop otherwise
+ C_SUB( res, a,b) : res = a - b
+ C_SUBFROM( res , a) : res -= a
+ C_ADDTO( res , a) : res += a
+ * */
+#ifdef FIXED_POINT
+#include "arch.h"
+
+
+#define SAMP_MAX 2147483647
+#define TWID_MAX 32767
+#define TRIG_UPSCALE 1
+
+#define SAMP_MIN -SAMP_MAX
+
+
+# define S_MUL(a,b) MULT16_32_Q15(b, a)
+
+# define C_MUL(m,a,b) \
+ do{ (m).r = SUB32(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
+ (m).i = ADD32(S_MUL((a).r,(b).i) , S_MUL((a).i,(b).r)); }while(0)
+
+# define C_MULC(m,a,b) \
+ do{ (m).r = ADD32(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
+ (m).i = SUB32(S_MUL((a).i,(b).r) , S_MUL((a).r,(b).i)); }while(0)
+
+# define C_MULBYSCALAR( c, s ) \
+ do{ (c).r = S_MUL( (c).r , s ) ;\
+ (c).i = S_MUL( (c).i , s ) ; }while(0)
+
+# define DIVSCALAR(x,k) \
+ (x) = S_MUL( x, (TWID_MAX-((k)>>1))/(k)+1 )
+
+# define C_FIXDIV(c,div) \
+ do { DIVSCALAR( (c).r , div); \
+ DIVSCALAR( (c).i , div); }while (0)
+
+#define C_ADD( res, a,b)\
+ do {(res).r=ADD32((a).r,(b).r); (res).i=ADD32((a).i,(b).i); \
+ }while(0)
+#define C_SUB( res, a,b)\
+ do {(res).r=SUB32((a).r,(b).r); (res).i=SUB32((a).i,(b).i); \
+ }while(0)
+#define C_ADDTO( res , a)\
+ do {(res).r = ADD32((res).r, (a).r); (res).i = ADD32((res).i,(a).i);\
+ }while(0)
+
+#define C_SUBFROM( res , a)\
+ do {(res).r = ADD32((res).r,(a).r); (res).i = SUB32((res).i,(a).i); \
+ }while(0)
+
+#if defined(OPUS_ARM_INLINE_ASM)
+#include "arm/kiss_fft_armv4.h"
+#endif
+
+#if defined(OPUS_ARM_INLINE_EDSP)
+#include "arm/kiss_fft_armv5e.h"
+#endif
+#if defined(MIPSr1_ASM)
+#include "mips/kiss_fft_mipsr1.h"
+#endif
+
+#else /* not FIXED_POINT*/
+
+# define S_MUL(a,b) ( (a)*(b) )
+#define C_MUL(m,a,b) \
+ do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
+ (m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
+#define C_MULC(m,a,b) \
+ do{ (m).r = (a).r*(b).r + (a).i*(b).i;\
+ (m).i = (a).i*(b).r - (a).r*(b).i; }while(0)
+
+#define C_MUL4(m,a,b) C_MUL(m,a,b)
+
+# define C_FIXDIV(c,div) /* NOOP */
+# define C_MULBYSCALAR( c, s ) \
+ do{ (c).r *= (s);\
+ (c).i *= (s); }while(0)
+#endif
+
+#ifndef CHECK_OVERFLOW_OP
+# define CHECK_OVERFLOW_OP(a,op,b) /* noop */
+#endif
+
+#ifndef C_ADD
+#define C_ADD( res, a,b)\
+ do { \
+ CHECK_OVERFLOW_OP((a).r,+,(b).r)\
+ CHECK_OVERFLOW_OP((a).i,+,(b).i)\
+ (res).r=(a).r+(b).r; (res).i=(a).i+(b).i; \
+ }while(0)
+#define C_SUB( res, a,b)\
+ do { \
+ CHECK_OVERFLOW_OP((a).r,-,(b).r)\
+ CHECK_OVERFLOW_OP((a).i,-,(b).i)\
+ (res).r=(a).r-(b).r; (res).i=(a).i-(b).i; \
+ }while(0)
+#define C_ADDTO( res , a)\
+ do { \
+ CHECK_OVERFLOW_OP((res).r,+,(a).r)\
+ CHECK_OVERFLOW_OP((res).i,+,(a).i)\
+ (res).r += (a).r; (res).i += (a).i;\
+ }while(0)
+
+#define C_SUBFROM( res , a)\
+ do {\
+ CHECK_OVERFLOW_OP((res).r,-,(a).r)\
+ CHECK_OVERFLOW_OP((res).i,-,(a).i)\
+ (res).r -= (a).r; (res).i -= (a).i; \
+ }while(0)
+#endif /* C_ADD defined */
+
+#ifdef FIXED_POINT
+/*# define KISS_FFT_COS(phase) TRIG_UPSCALE*floor(MIN(32767,MAX(-32767,.5+32768 * cos (phase))))
+# define KISS_FFT_SIN(phase) TRIG_UPSCALE*floor(MIN(32767,MAX(-32767,.5+32768 * sin (phase))))*/
+# define KISS_FFT_COS(phase) floor(.5+TWID_MAX*cos (phase))
+# define KISS_FFT_SIN(phase) floor(.5+TWID_MAX*sin (phase))
+# define HALF_OF(x) ((x)>>1)
+#elif defined(USE_SIMD)
+# define KISS_FFT_COS(phase) _mm_set1_ps( cos(phase) )
+# define KISS_FFT_SIN(phase) _mm_set1_ps( sin(phase) )
+# define HALF_OF(x) ((x)*_mm_set1_ps(.5f))
+#else
+# define KISS_FFT_COS(phase) (kiss_fft_scalar) cos(phase)
+# define KISS_FFT_SIN(phase) (kiss_fft_scalar) sin(phase)
+# define HALF_OF(x) ((x)*.5f)
+#endif
+
+#define kf_cexp(x,phase) \
+ do{ \
+ (x)->r = KISS_FFT_COS(phase);\
+ (x)->i = KISS_FFT_SIN(phase);\
+ }while(0)
+
+#define kf_cexp2(x,phase) \
+ do{ \
+ (x)->r = TRIG_UPSCALE*celt_cos_norm((phase));\
+ (x)->i = TRIG_UPSCALE*celt_cos_norm((phase)-32768);\
+}while(0)
+
+#endif /* KISS_FFT_GUTS_H */
diff --git a/libopus/celt/arch.h b/libopus/celt/arch.h
new file mode 100644
index 0000000..8ceab5f
--- /dev/null
+++ b/libopus/celt/arch.h
@@ -0,0 +1,252 @@
+/* Copyright (c) 2003-2008 Jean-Marc Valin
+ Copyright (c) 2007-2008 CSIRO
+ Copyright (c) 2007-2009 Xiph.Org Foundation
+ Written by Jean-Marc Valin */
+/**
+ @file arch.h
+ @brief Various architecture definitions for CELT
+*/
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef ARCH_H
+#define ARCH_H
+
+#include "opus_types.h"
+#include "opus_defines.h"
+
+# if !defined(__GNUC_PREREQ)
+# if defined(__GNUC__)&&defined(__GNUC_MINOR__)
+# define __GNUC_PREREQ(_maj,_min) \
+ ((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
+# else
+# define __GNUC_PREREQ(_maj,_min) 0
+# endif
+# endif
+
+#define CELT_SIG_SCALE 32768.f
+
+#define celt_fatal(str) _celt_fatal(str, __FILE__, __LINE__);
+#ifdef ENABLE_ASSERTIONS
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef __GNUC__
+__attribute__((noreturn))
+#endif
+static OPUS_INLINE void _celt_fatal(const char *str, const char *file, int line)
+{
+ fprintf (stderr, "Fatal (internal) error in %s, line %d: %s\n", file, line, str);
+ abort();
+}
+#define celt_assert(cond) {if (!(cond)) {celt_fatal("assertion failed: " #cond);}}
+#define celt_assert2(cond, message) {if (!(cond)) {celt_fatal("assertion failed: " #cond "\n" message);}}
+#else
+#define celt_assert(cond)
+#define celt_assert2(cond, message)
+#endif
+
+#define IMUL32(a,b) ((a)*(b))
+
+#define MIN16(a,b) ((a) < (b) ? (a) : (b)) /**< Minimum 16-bit value. */
+#define MAX16(a,b) ((a) > (b) ? (a) : (b)) /**< Maximum 16-bit value. */
+#define MIN32(a,b) ((a) < (b) ? (a) : (b)) /**< Minimum 32-bit value. */
+#define MAX32(a,b) ((a) > (b) ? (a) : (b)) /**< Maximum 32-bit value. */
+#define IMIN(a,b) ((a) < (b) ? (a) : (b)) /**< Minimum int value. */
+#define IMAX(a,b) ((a) > (b) ? (a) : (b)) /**< Maximum int value. */
+#define UADD32(a,b) ((a)+(b))
+#define USUB32(a,b) ((a)-(b))
+
+/* Set this if opus_int64 is a native type of the CPU. */
+/* Assume that all LP64 architectures have fast 64-bit types; also x86_64
+ (which can be ILP32 for x32) and Win64 (which is LLP64). */
+#if defined(__x86_64__) || defined(__LP64__) || defined(_WIN64)
+#define OPUS_FAST_INT64 1
+#else
+#define OPUS_FAST_INT64 0
+#endif
+
+#define PRINT_MIPS(file)
+
+#ifdef FIXED_POINT
+
+typedef opus_int16 opus_val16;
+typedef opus_int32 opus_val32;
+
+typedef opus_val32 celt_sig;
+typedef opus_val16 celt_norm;
+typedef opus_val32 celt_ener;
+
+#define Q15ONE 32767
+
+#define SIG_SHIFT 12
+
+#define NORM_SCALING 16384
+
+#define DB_SHIFT 10
+
+#define EPSILON 1
+#define VERY_SMALL 0
+#define VERY_LARGE16 ((opus_val16)32767)
+#define Q15_ONE ((opus_val16)32767)
+
+#define SCALEIN(a) (a)
+#define SCALEOUT(a) (a)
+
+#define ABS16(x) ((x) < 0 ? (-(x)) : (x))
+#define ABS32(x) ((x) < 0 ? (-(x)) : (x))
+
+static OPUS_INLINE opus_int16 SAT16(opus_int32 x) {
+ return x > 32767 ? 32767 : x < -32768 ? -32768 : (opus_int16)x;
+}
+
+#ifdef FIXED_DEBUG
+#include "fixed_debug.h"
+#else
+
+#include "fixed_generic.h"
+
+#ifdef OPUS_ARM_PRESUME_AARCH64_NEON_INTR
+#include "arm/fixed_arm64.h"
+#elif OPUS_ARM_INLINE_EDSP
+#include "arm/fixed_armv5e.h"
+#elif defined (OPUS_ARM_INLINE_ASM)
+#include "arm/fixed_armv4.h"
+#elif defined (BFIN_ASM)
+#include "fixed_bfin.h"
+#elif defined (TI_C5X_ASM)
+#include "fixed_c5x.h"
+#elif defined (TI_C6X_ASM)
+#include "fixed_c6x.h"
+#endif
+
+#endif
+
+#else /* FIXED_POINT */
+
+typedef float opus_val16;
+typedef float opus_val32;
+
+typedef float celt_sig;
+typedef float celt_norm;
+typedef float celt_ener;
+
+#ifdef FLOAT_APPROX
+/* This code should reliably detect NaN/inf even when -ffast-math is used.
+ Assumes IEEE 754 format. */
+static OPUS_INLINE int celt_isnan(float x)
+{
+ union {float f; opus_uint32 i;} in;
+ in.f = x;
+ return ((in.i>>23)&0xFF)==0xFF && (in.i&0x007FFFFF)!=0;
+}
+#else
+#ifdef __FAST_MATH__
+#error Cannot build libopus with -ffast-math unless FLOAT_APPROX is defined. This could result in crashes on extreme (e.g. NaN) input
+#endif
+#define celt_isnan(x) ((x)!=(x))
+#endif
+
+#define Q15ONE 1.0f
+
+#define NORM_SCALING 1.f
+
+#define EPSILON 1e-15f
+#define VERY_SMALL 1e-30f
+#define VERY_LARGE16 1e15f
+#define Q15_ONE ((opus_val16)1.f)
+
+/* This appears to be the same speed as C99's fabsf() but it's more portable. */
+#define ABS16(x) ((float)fabs(x))
+#define ABS32(x) ((float)fabs(x))
+
+#define QCONST16(x,bits) (x)
+#define QCONST32(x,bits) (x)
+
+#define NEG16(x) (-(x))
+#define NEG32(x) (-(x))
+#define EXTRACT16(x) (x)
+#define EXTEND32(x) (x)
+#define SHR16(a,shift) (a)
+#define SHL16(a,shift) (a)
+#define SHR32(a,shift) (a)
+#define SHL32(a,shift) (a)
+#define PSHR32(a,shift) (a)
+#define VSHR32(a,shift) (a)
+
+#define PSHR(a,shift) (a)
+#define SHR(a,shift) (a)
+#define SHL(a,shift) (a)
+#define SATURATE(x,a) (x)
+#define SATURATE16(x) (x)
+
+#define ROUND16(a,shift) (a)
+#define HALF16(x) (.5f*(x))
+#define HALF32(x) (.5f*(x))
+
+#define ADD16(a,b) ((a)+(b))
+#define SUB16(a,b) ((a)-(b))
+#define ADD32(a,b) ((a)+(b))
+#define SUB32(a,b) ((a)-(b))
+#define MULT16_16_16(a,b) ((a)*(b))
+#define MULT16_16(a,b) ((opus_val32)(a)*(opus_val32)(b))
+#define MAC16_16(c,a,b) ((c)+(opus_val32)(a)*(opus_val32)(b))
+
+#define MULT16_32_Q15(a,b) ((a)*(b))
+#define MULT16_32_Q16(a,b) ((a)*(b))
+
+#define MULT32_32_Q31(a,b) ((a)*(b))
+
+#define MAC16_32_Q15(c,a,b) ((c)+(a)*(b))
+#define MAC16_32_Q16(c,a,b) ((c)+(a)*(b))
+
+#define MULT16_16_Q11_32(a,b) ((a)*(b))
+#define MULT16_16_Q11(a,b) ((a)*(b))
+#define MULT16_16_Q13(a,b) ((a)*(b))
+#define MULT16_16_Q14(a,b) ((a)*(b))
+#define MULT16_16_Q15(a,b) ((a)*(b))
+#define MULT16_16_P15(a,b) ((a)*(b))
+#define MULT16_16_P13(a,b) ((a)*(b))
+#define MULT16_16_P14(a,b) ((a)*(b))
+#define MULT16_32_P16(a,b) ((a)*(b))
+
+#define DIV32_16(a,b) (((opus_val32)(a))/(opus_val16)(b))
+#define DIV32(a,b) (((opus_val32)(a))/(opus_val32)(b))
+
+#define SCALEIN(a) ((a)*CELT_SIG_SCALE)
+#define SCALEOUT(a) ((a)*(1/CELT_SIG_SCALE))
+
+#define SIG2WORD16(x) (x)
+
+#endif /* !FIXED_POINT */
+
+#ifndef GLOBAL_STACK_SIZE
+#ifdef FIXED_POINT
+#define GLOBAL_STACK_SIZE 100000
+#else
+#define GLOBAL_STACK_SIZE 100000
+#endif
+#endif
+
+#endif /* ARCH_H */
diff --git a/libopus/celt/arm/arm2gnu.pl b/libopus/celt/arm/arm2gnu.pl
new file mode 100755
index 0000000..6c922ac
--- /dev/null
+++ b/libopus/celt/arm/arm2gnu.pl
@@ -0,0 +1,353 @@
+#!/usr/bin/perl
+# Copyright (C) 2002-2013 Xiph.org Foundation
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# - Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+# OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+my $bigend; # little/big endian
+my $nxstack;
+my $apple = 0;
+my $symprefix = "";
+
+$nxstack = 0;
+
+eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}'
+ if $running_under_some_shell;
+
+while ($ARGV[0] =~ /^-/) {
+ $_ = shift;
+ last if /^--$/;
+ if (/^-n$/) {
+ $nflag++;
+ next;
+ }
+ if (/^--apple$/) {
+ $apple = 1;
+ $symprefix = "_";
+ next;
+ }
+ die "I don't recognize this switch: $_\\n";
+}
+$printit++ unless $nflag;
+
+$\ = "\n"; # automatically add newline on print
+$n=0;
+
+$thumb = 0; # ARM mode by default, not Thumb.
+@proc_stack = ();
+
+printf (" .syntax unified\n");
+
+LINE:
+while (<>) {
+
+ # For ADRLs we need to add a new line after the substituted one.
+ $addPadding = 0;
+
+ # First, we do not dare to touch *anything* inside double quotes, do we?
+ # Second, if you want a dollar character in the string,
+ # insert two of them -- that's how ARM C and assembler treat strings.
+ s/^([A-Za-z_]\w*)[ \t]+DCB[ \t]*\"/$1: .ascii \"/ && do { s/\$\$/\$/g; next };
+ s/\bDCB\b[ \t]*\"/.ascii \"/ && do { s/\$\$/\$/g; next };
+ s/^(\S+)\s+RN\s+(\S+)/$1 .req r$2/ && do { s/\$\$/\$/g; next };
+ # If there's nothing on a line but a comment, don't try to apply any further
+ # substitutions (this is a cheap hack to avoid mucking up the license header)
+ s/^([ \t]*);/$1@/ && do { s/\$\$/\$/g; next };
+ # If substituted -- leave immediately !
+
+ s/@/,:/;
+ s/;/@/;
+ while ( /@.*'/ ) {
+ s/(@.*)'/$1/g;
+ }
+ s/\{FALSE\}/0/g;
+ s/\{TRUE\}/1/g;
+ s/\{(\w\w\w\w+)\}/$1/g;
+ s/\bINCLUDE[ \t]*([^ \t\n]+)/.include \"$1\"/;
+ s/\bGET[ \t]*([^ \t\n]+)/.include \"${ my $x=$1; $x =~ s|\.s|-gnu.S|; \$x }\"/;
+ s/\bIMPORT\b/.extern/;
+ s/\bEXPORT\b\s*/.global $symprefix/;
+ s/^(\s+)\[/$1IF/;
+ s/^(\s+)\|/$1ELSE/;
+ s/^(\s+)\]/$1ENDIF/;
+ s/IF *:DEF:/ .ifdef/;
+ s/IF *:LNOT: *:DEF:/ .ifndef/;
+ s/ELSE/ .else/;
+ s/ENDIF/ .endif/;
+
+ if( /\bIF\b/ ) {
+ s/\bIF\b/ .if/;
+ s/=/==/;
+ }
+ if ( $n == 2) {
+ s/\$/\\/g;
+ }
+ if ($n == 1) {
+ s/\$//g;
+ s/label//g;
+ $n = 2;
+ }
+ if ( /MACRO/ ) {
+ s/MACRO *\n/.macro/;
+ $n=1;
+ }
+ if ( /\bMEND\b/ ) {
+ s/\bMEND\b/.endm/;
+ $n=0;
+ }
+
+ # ".rdata" doesn't work in 'as' version 2.13.2, as it is ".rodata" there.
+ #
+ if ( /\bAREA\b/ ) {
+ my $align;
+ $align = "2";
+ if ( /ALIGN=(\d+)/ ) {
+ $align = $1;
+ }
+ if ( /CODE/ ) {
+ $nxstack = 1;
+ }
+ s/^(.+)CODE(.+)READONLY(.*)/ .text/;
+ s/^(.+)DATA(.+)READONLY(.*)/ .section .rdata/;
+ s/^(.+)\|\|\.data\|\|(.+)/ .data/;
+ s/^(.+)\|\|\.bss\|\|(.+)/ .bss/;
+ s/$/; .p2align $align/;
+ # Enable NEON instructions but don't produce a binary that requires
+ # ARMv7. RVCT does not have equivalent directives, so we just do this
+ # for all CODE areas.
+ if ( /.text/ ) {
+ # Separating .arch, .fpu, etc., by semicolons does not work (gas
+ # thinks the semicolon is part of the arch name, even when there's
+ # whitespace separating them). Sadly this means our line numbers
+ # won't match the original source file (we could use the .line
+ # directive, which is documented to be obsolete, but then gdb will
+ # show the wrong line in the translated source file).
+ s/$/; .arch armv7-a\n .fpu neon\n .object_arch armv4t/ unless ($apple);
+ }
+ }
+
+ s/\|\|\.constdata\$(\d+)\|\|/.L_CONST$1/; # ||.constdata$3||
+ s/\|\|\.bss\$(\d+)\|\|/.L_BSS$1/; # ||.bss$2||
+ s/\|\|\.data\$(\d+)\|\|/.L_DATA$1/; # ||.data$2||
+ s/\|\|([a-zA-Z0-9_]+)\@([a-zA-Z0-9_]+)\|\|/@ $&/;
+ s/^(\s+)\%(\s)/ .space $1/;
+
+ s/\|(.+)\.(\d+)\|/\.$1_$2/; # |L80.123| -> .L80_123
+ s/\bCODE32\b/.code 32/ && do {$thumb = 0};
+ s/\bCODE16\b/.code 16/ && do {$thumb = 1};
+ if (/\bPROC\b/)
+ {
+ my $prefix;
+ my $proc;
+ /^([A-Za-z_\.]\w+)\b/;
+ $proc = $1;
+ $prefix = "";
+ if ($proc)
+ {
+ $prefix = $prefix.sprintf("\t.type\t%s, %%function; ",$proc) unless ($apple);
+ # Make sure we $prefix isn't empty here (for the $apple case).
+ # We handle mangling the label here, make sure it doesn't match
+ # the label handling below (if $prefix would be empty).
+ $prefix = "; ";
+ push(@proc_stack, $proc);
+ s/^[A-Za-z_\.]\w+/$symprefix$&:/;
+ }
+ $prefix = $prefix."\t.thumb_func; " if ($thumb);
+ s/\bPROC\b/@ $&/;
+ $_ = $prefix.$_;
+ }
+ s/^(\s*)(S|Q|SH|U|UQ|UH)ASX\b/$1$2ADDSUBX/;
+ s/^(\s*)(S|Q|SH|U|UQ|UH)SAX\b/$1$2SUBADDX/;
+ if (/\bENDP\b/)
+ {
+ my $proc;
+ s/\bENDP\b/@ $&/;
+ $proc = pop(@proc_stack);
+ $_ = "\t.size $proc, .-$proc".$_ if ($proc && !$apple);
+ }
+ s/\bSUBT\b/@ $&/;
+ s/\bDATA\b/@ $&/; # DATA directive is deprecated -- Asm guide, p.7-25
+ s/\bKEEP\b/@ $&/;
+ s/\bEXPORTAS\b/@ $&/;
+ s/\|\|(.)+\bEQU\b/@ $&/;
+ s/\|\|([\w\$]+)\|\|/$1/;
+ s/\bENTRY\b/@ $&/;
+ s/\bASSERT\b/@ $&/;
+ s/\bGBLL\b/@ $&/;
+ s/\bGBLA\b/@ $&/;
+ s/^\W+OPT\b/@ $&/;
+ s/:OR:/|/g;
+ s/:SHL:/<</g;
+ s/:SHR:/>>/g;
+ s/:AND:/&/g;
+ s/:LAND:/&&/g;
+ s/CPSR/cpsr/;
+ s/SPSR/spsr/;
+ s/ALIGN$/.balign 4/;
+ s/ALIGN\s+([0-9x]+)$/.balign $1/;
+ s/psr_cxsf/psr_all/;
+ s/LTORG/.ltorg/;
+ s/^([A-Za-z_]\w*)[ \t]+EQU/ .set $1,/;
+ s/^([A-Za-z_]\w*)[ \t]+SETL/ .set $1,/;
+ s/^([A-Za-z_]\w*)[ \t]+SETA/ .set $1,/;
+ s/^([A-Za-z_]\w*)[ \t]+\*/ .set $1,/;
+
+ # {PC} + 0xdeadfeed --> . + 0xdeadfeed
+ s/\{PC\} \+/ \. +/;
+
+ # Single hex constant on the line !
+ #
+ # >>> NOTE <<<
+ # Double-precision floats in gcc are always mixed-endian, which means
+ # bytes in two words are little-endian, but words are big-endian.
+ # So, 0x0000deadfeed0000 would be stored as 0x0000dead at low address
+ # and 0xfeed0000 at high address.
+ #
+ s/\bDCFD\b[ \t]+0x([a-fA-F0-9]{8})([a-fA-F0-9]{8})/.long 0x$1, 0x$2/;
+ # Only decimal constants on the line, no hex !
+ s/\bDCFD\b[ \t]+([0-9\.\-]+)/.double $1/;
+
+ # Single hex constant on the line !
+# s/\bDCFS\b[ \t]+0x([a-f0-9]{8})([a-f0-9]{8})/.long 0x$1, 0x$2/;
+ # Only decimal constants on the line, no hex !
+# s/\bDCFS\b[ \t]+([0-9\.\-]+)/.double $1/;
+ s/\bDCFS[ \t]+0x/.word 0x/;
+ s/\bDCFS\b/.float/;
+
+ s/^([A-Za-z_]\w*)[ \t]+DCD/$1 .word/;
+ s/\bDCD\b/.word/;
+ s/^([A-Za-z_]\w*)[ \t]+DCW/$1 .short/;
+ s/\bDCW\b/.short/;
+ s/^([A-Za-z_]\w*)[ \t]+DCB/$1 .byte/;
+ s/\bDCB\b/.byte/;
+ s/^([A-Za-z_]\w*)[ \t]+\%/.comm $1,/;
+ s/^[A-Za-z_\.]\w+/$&:/;
+ s/^(\d+)/$1:/;
+ s/\%(\d+)/$1b_or_f/;
+ s/\%[Bb](\d+)/$1b/;
+ s/\%[Ff](\d+)/$1f/;
+ s/\%[Ff][Tt](\d+)/$1f/;
+ s/&([\dA-Fa-f]+)/0x$1/;
+ if ( /\b2_[01]+\b/ ) {
+ s/\b2_([01]+)\b/conv$1&&&&/g;
+ while ( /[01][01][01][01]&&&&/ ) {
+ s/0000&&&&/&&&&0/g;
+ s/0001&&&&/&&&&1/g;
+ s/0010&&&&/&&&&2/g;
+ s/0011&&&&/&&&&3/g;
+ s/0100&&&&/&&&&4/g;
+ s/0101&&&&/&&&&5/g;
+ s/0110&&&&/&&&&6/g;
+ s/0111&&&&/&&&&7/g;
+ s/1000&&&&/&&&&8/g;
+ s/1001&&&&/&&&&9/g;
+ s/1010&&&&/&&&&A/g;
+ s/1011&&&&/&&&&B/g;
+ s/1100&&&&/&&&&C/g;
+ s/1101&&&&/&&&&D/g;
+ s/1110&&&&/&&&&E/g;
+ s/1111&&&&/&&&&F/g;
+ }
+ s/000&&&&/&&&&0/g;
+ s/001&&&&/&&&&1/g;
+ s/010&&&&/&&&&2/g;
+ s/011&&&&/&&&&3/g;
+ s/100&&&&/&&&&4/g;
+ s/101&&&&/&&&&5/g;
+ s/110&&&&/&&&&6/g;
+ s/111&&&&/&&&&7/g;
+ s/00&&&&/&&&&0/g;
+ s/01&&&&/&&&&1/g;
+ s/10&&&&/&&&&2/g;
+ s/11&&&&/&&&&3/g;
+ s/0&&&&/&&&&0/g;
+ s/1&&&&/&&&&1/g;
+ s/conv&&&&/0x/g;
+ }
+
+ if ( /commandline/)
+ {
+ if( /-bigend/)
+ {
+ $bigend=1;
+ }
+ }
+
+ if ( /\bDCDU\b/ )
+ {
+ my $cmd=$_;
+ my $value;
+ my $prefix;
+ my $w1;
+ my $w2;
+ my $w3;
+ my $w4;
+
+ s/\s+DCDU\b/@ $&/;
+
+ $cmd =~ /\bDCDU\b\s+0x(\d+)/;
+ $value = $1;
+ $value =~ /(\w\w)(\w\w)(\w\w)(\w\w)/;
+ $w1 = $1;
+ $w2 = $2;
+ $w3 = $3;
+ $w4 = $4;
+
+ if( $bigend ne "")
+ {
+ # big endian
+ $prefix = "\t.byte\t0x".$w1.";".
+ "\t.byte\t0x".$w2.";".
+ "\t.byte\t0x".$w3.";".
+ "\t.byte\t0x".$w4."; ";
+ }
+ else
+ {
+ # little endian
+ $prefix = "\t.byte\t0x".$w4.";".
+ "\t.byte\t0x".$w3.";".
+ "\t.byte\t0x".$w2.";".
+ "\t.byte\t0x".$w1."; ";
+ }
+ $_=$prefix.$_;
+ }
+
+ if ( /\badrl\b/i )
+ {
+ s/\badrl\s+(\w+)\s*,\s*(\w+)/ldr $1,=$2/i;
+ $addPadding = 1;
+ }
+ s/\bEND\b/@ END/;
+} continue {
+ printf ("%s", $_) if $printit;
+ if ($addPadding != 0)
+ {
+ printf (" mov r0,r0\n");
+ $addPadding = 0;
+ }
+}
+#If we had a code section, mark that this object doesn't need an executable
+# stack.
+if ($nxstack && !$apple) {
+ printf (" .section\t.note.GNU-stack,\"\",\%\%progbits\n");
+}
diff --git a/libopus/celt/arm/arm_celt_map.c b/libopus/celt/arm/arm_celt_map.c
new file mode 100644
index 0000000..4d4d069
--- /dev/null
+++ b/libopus/celt/arm/arm_celt_map.c
@@ -0,0 +1,143 @@
+/* Copyright (c) 2010 Xiph.Org Foundation
+ * Copyright (c) 2013 Parrot */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "pitch.h"
+#include "kiss_fft.h"
+#include "mdct.h"
+
+#if defined(OPUS_HAVE_RTCD)
+
+# if defined(FIXED_POINT)
+# if ((defined(OPUS_ARM_MAY_HAVE_NEON) && !defined(OPUS_ARM_PRESUME_NEON)) || \
+ (defined(OPUS_ARM_MAY_HAVE_MEDIA) && !defined(OPUS_ARM_PRESUME_MEDIA)) || \
+ (defined(OPUS_ARM_MAY_HAVE_EDSP) && !defined(OPUS_ARM_PRESUME_EDSP)))
+opus_val32 (*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
+ const opus_val16 *, opus_val32 *, int , int) = {
+ celt_pitch_xcorr_c, /* ARMv4 */
+ MAY_HAVE_EDSP(celt_pitch_xcorr), /* EDSP */
+ MAY_HAVE_MEDIA(celt_pitch_xcorr), /* Media */
+ MAY_HAVE_NEON(celt_pitch_xcorr) /* NEON */
+};
+
+# endif
+# else /* !FIXED_POINT */
+# if defined(OPUS_ARM_MAY_HAVE_NEON_INTR) && !defined(OPUS_ARM_PRESUME_NEON_INTR)
+void (*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
+ const opus_val16 *, opus_val32 *, int, int) = {
+ celt_pitch_xcorr_c, /* ARMv4 */
+ celt_pitch_xcorr_c, /* EDSP */
+ celt_pitch_xcorr_c, /* Media */
+ celt_pitch_xcorr_float_neon /* Neon */
+};
+# endif
+# endif /* FIXED_POINT */
+
+#if defined(FIXED_POINT) && defined(OPUS_HAVE_RTCD) && \
+ defined(OPUS_ARM_MAY_HAVE_NEON_INTR) && !defined(OPUS_ARM_PRESUME_NEON_INTR)
+
+void (*const XCORR_KERNEL_IMPL[OPUS_ARCHMASK + 1])(
+ const opus_val16 *x,
+ const opus_val16 *y,
+ opus_val32 sum[4],
+ int len
+) = {
+ xcorr_kernel_c, /* ARMv4 */
+ xcorr_kernel_c, /* EDSP */
+ xcorr_kernel_c, /* Media */
+ xcorr_kernel_neon_fixed, /* Neon */
+};
+
+#endif
+
+# if defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+# if defined(HAVE_ARM_NE10)
+# if defined(CUSTOM_MODES)
+int (*const OPUS_FFT_ALLOC_ARCH_IMPL[OPUS_ARCHMASK+1])(kiss_fft_state *st) = {
+ opus_fft_alloc_arch_c, /* ARMv4 */
+ opus_fft_alloc_arch_c, /* EDSP */
+ opus_fft_alloc_arch_c, /* Media */
+ opus_fft_alloc_arm_neon /* Neon with NE10 library support */
+};
+
+void (*const OPUS_FFT_FREE_ARCH_IMPL[OPUS_ARCHMASK+1])(kiss_fft_state *st) = {
+ opus_fft_free_arch_c, /* ARMv4 */
+ opus_fft_free_arch_c, /* EDSP */
+ opus_fft_free_arch_c, /* Media */
+ opus_fft_free_arm_neon /* Neon with NE10 */
+};
+# endif /* CUSTOM_MODES */
+
+void (*const OPUS_FFT[OPUS_ARCHMASK+1])(const kiss_fft_state *cfg,
+ const kiss_fft_cpx *fin,
+ kiss_fft_cpx *fout) = {
+ opus_fft_c, /* ARMv4 */
+ opus_fft_c, /* EDSP */
+ opus_fft_c, /* Media */
+ opus_fft_neon /* Neon with NE10 */
+};
+
+void (*const OPUS_IFFT[OPUS_ARCHMASK+1])(const kiss_fft_state *cfg,
+ const kiss_fft_cpx *fin,
+ kiss_fft_cpx *fout) = {
+ opus_ifft_c, /* ARMv4 */
+ opus_ifft_c, /* EDSP */
+ opus_ifft_c, /* Media */
+ opus_ifft_neon /* Neon with NE10 */
+};
+
+void (*const CLT_MDCT_FORWARD_IMPL[OPUS_ARCHMASK+1])(const mdct_lookup *l,
+ kiss_fft_scalar *in,
+ kiss_fft_scalar * OPUS_RESTRICT out,
+ const opus_val16 *window,
+ int overlap, int shift,
+ int stride, int arch) = {
+ clt_mdct_forward_c, /* ARMv4 */
+ clt_mdct_forward_c, /* EDSP */
+ clt_mdct_forward_c, /* Media */
+ clt_mdct_forward_neon /* Neon with NE10 */
+};
+
+void (*const CLT_MDCT_BACKWARD_IMPL[OPUS_ARCHMASK+1])(const mdct_lookup *l,
+ kiss_fft_scalar *in,
+ kiss_fft_scalar * OPUS_RESTRICT out,
+ const opus_val16 *window,
+ int overlap, int shift,
+ int stride, int arch) = {
+ clt_mdct_backward_c, /* ARMv4 */
+ clt_mdct_backward_c, /* EDSP */
+ clt_mdct_backward_c, /* Media */
+ clt_mdct_backward_neon /* Neon with NE10 */
+};
+
+# endif /* HAVE_ARM_NE10 */
+# endif /* OPUS_ARM_MAY_HAVE_NEON_INTR */
+
+#endif /* OPUS_HAVE_RTCD */
diff --git a/libopus/celt/arm/armcpu.c b/libopus/celt/arm/armcpu.c
new file mode 100644
index 0000000..694a63b
--- /dev/null
+++ b/libopus/celt/arm/armcpu.c
@@ -0,0 +1,185 @@
+/* Copyright (c) 2010 Xiph.Org Foundation
+ * Copyright (c) 2013 Parrot */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/* Original code from libtheora modified to suit to Opus */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef OPUS_HAVE_RTCD
+
+#include "armcpu.h"
+#include "cpu_support.h"
+#include "os_support.h"
+#include "opus_types.h"
+#include "arch.h"
+
+#define OPUS_CPU_ARM_V4_FLAG (1<<OPUS_ARCH_ARM_V4)
+#define OPUS_CPU_ARM_EDSP_FLAG (1<<OPUS_ARCH_ARM_EDSP)
+#define OPUS_CPU_ARM_MEDIA_FLAG (1<<OPUS_ARCH_ARM_MEDIA)
+#define OPUS_CPU_ARM_NEON_FLAG (1<<OPUS_ARCH_ARM_NEON)
+
+#if defined(_MSC_VER)
+/*For GetExceptionCode() and EXCEPTION_ILLEGAL_INSTRUCTION.*/
+# define WIN32_LEAN_AND_MEAN
+# define WIN32_EXTRA_LEAN
+# include <windows.h>
+
+static OPUS_INLINE opus_uint32 opus_cpu_capabilities(void){
+ opus_uint32 flags;
+ flags=0;
+ /* MSVC has no OPUS_INLINE __asm support for ARM, but it does let you __emit
+ * instructions via their assembled hex code.
+ * All of these instructions should be essentially nops. */
+# if defined(OPUS_ARM_MAY_HAVE_EDSP) || defined(OPUS_ARM_MAY_HAVE_MEDIA) \
+ || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+ __try{
+ /*PLD [r13]*/
+ __emit(0xF5DDF000);
+ flags|=OPUS_CPU_ARM_EDSP_FLAG;
+ }
+ __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
+ /*Ignore exception.*/
+ }
+# if defined(OPUS_ARM_MAY_HAVE_MEDIA) \
+ || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+ __try{
+ /*SHADD8 r3,r3,r3*/
+ __emit(0xE6333F93);
+ flags|=OPUS_CPU_ARM_MEDIA_FLAG;
+ }
+ __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
+ /*Ignore exception.*/
+ }
+# if defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+ __try{
+ /*VORR q0,q0,q0*/
+ __emit(0xF2200150);
+ flags|=OPUS_CPU_ARM_NEON_FLAG;
+ }
+ __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
+ /*Ignore exception.*/
+ }
+# endif
+# endif
+# endif
+ return flags;
+}
+
+#elif defined(__linux__)
+/* Linux based */
+opus_uint32 opus_cpu_capabilities(void)
+{
+ opus_uint32 flags = 0;
+ FILE *cpuinfo;
+
+ /* Reading /proc/self/auxv would be easier, but that doesn't work reliably on
+ * Android */
+ cpuinfo = fopen("/proc/cpuinfo", "r");
+
+ if(cpuinfo != NULL)
+ {
+ /* 512 should be enough for anybody (it's even enough for all the flags that
+ * x86 has accumulated... so far). */
+ char buf[512];
+
+ while(fgets(buf, 512, cpuinfo) != NULL)
+ {
+# if defined(OPUS_ARM_MAY_HAVE_EDSP) || defined(OPUS_ARM_MAY_HAVE_MEDIA) \
+ || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+ /* Search for edsp and neon flag */
+ if(memcmp(buf, "Features", 8) == 0)
+ {
+ char *p;
+ p = strstr(buf, " edsp");
+ if(p != NULL && (p[5] == ' ' || p[5] == '\n'))
+ flags |= OPUS_CPU_ARM_EDSP_FLAG;
+
+# if defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+ p = strstr(buf, " neon");
+ if(p != NULL && (p[5] == ' ' || p[5] == '\n'))
+ flags |= OPUS_CPU_ARM_NEON_FLAG;
+# endif
+ }
+# endif
+
+# if defined(OPUS_ARM_MAY_HAVE_MEDIA) \
+ || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+ /* Search for media capabilities (>= ARMv6) */
+ if(memcmp(buf, "CPU architecture:", 17) == 0)
+ {
+ int version;
+ version = atoi(buf+17);
+
+ if(version >= 6)
+ flags |= OPUS_CPU_ARM_MEDIA_FLAG;
+ }
+# endif
+ }
+
+ fclose(cpuinfo);
+ }
+ return flags;
+}
+#else
+/* The feature registers which can tell us what the processor supports are
+ * accessible in priveleged modes only, so we can't have a general user-space
+ * detection method like on x86.*/
+# error "Configured to use ARM asm but no CPU detection method available for " \
+ "your platform. Reconfigure with --disable-rtcd (or send patches)."
+#endif
+
+int opus_select_arch(void)
+{
+ opus_uint32 flags = opus_cpu_capabilities();
+ int arch = 0;
+
+ if(!(flags & OPUS_CPU_ARM_EDSP_FLAG)) {
+ /* Asserts ensure arch values are sequential */
+ celt_assert(arch == OPUS_ARCH_ARM_V4);
+ return arch;
+ }
+ arch++;
+
+ if(!(flags & OPUS_CPU_ARM_MEDIA_FLAG)) {
+ celt_assert(arch == OPUS_ARCH_ARM_EDSP);
+ return arch;
+ }
+ arch++;
+
+ if(!(flags & OPUS_CPU_ARM_NEON_FLAG)) {
+ celt_assert(arch == OPUS_ARCH_ARM_MEDIA);
+ return arch;
+ }
+ arch++;
+
+ celt_assert(arch == OPUS_ARCH_ARM_NEON);
+ return arch;
+}
+
+#endif
diff --git a/libopus/celt/arm/armcpu.h b/libopus/celt/arm/armcpu.h
new file mode 100644
index 0000000..820262f
--- /dev/null
+++ b/libopus/celt/arm/armcpu.h
@@ -0,0 +1,77 @@
+/* Copyright (c) 2010 Xiph.Org Foundation
+ * Copyright (c) 2013 Parrot */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#if !defined(ARMCPU_H)
+# define ARMCPU_H
+
+# if defined(OPUS_ARM_MAY_HAVE_EDSP)
+# define MAY_HAVE_EDSP(name) name ## _edsp
+# else
+# define MAY_HAVE_EDSP(name) name ## _c
+# endif
+
+# if defined(OPUS_ARM_MAY_HAVE_MEDIA)
+# define MAY_HAVE_MEDIA(name) name ## _media
+# else
+# define MAY_HAVE_MEDIA(name) MAY_HAVE_EDSP(name)
+# endif
+
+# if defined(OPUS_ARM_MAY_HAVE_NEON)
+# define MAY_HAVE_NEON(name) name ## _neon
+# else
+# define MAY_HAVE_NEON(name) MAY_HAVE_MEDIA(name)
+# endif
+
+# if defined(OPUS_ARM_PRESUME_EDSP)
+# define PRESUME_EDSP(name) name ## _edsp
+# else
+# define PRESUME_EDSP(name) name ## _c
+# endif
+
+# if defined(OPUS_ARM_PRESUME_MEDIA)
+# define PRESUME_MEDIA(name) name ## _media
+# else
+# define PRESUME_MEDIA(name) PRESUME_EDSP(name)
+# endif
+
+# if defined(OPUS_ARM_PRESUME_NEON)
+# define PRESUME_NEON(name) name ## _neon
+# else
+# define PRESUME_NEON(name) PRESUME_MEDIA(name)
+# endif
+
+# if defined(OPUS_HAVE_RTCD)
+int opus_select_arch(void);
+
+#define OPUS_ARCH_ARM_V4 (0)
+#define OPUS_ARCH_ARM_EDSP (1)
+#define OPUS_ARCH_ARM_MEDIA (2)
+#define OPUS_ARCH_ARM_NEON (3)
+
+# endif
+
+#endif
diff --git a/libopus/celt/arm/armopts.s.in b/libopus/celt/arm/armopts.s.in
new file mode 100644
index 0000000..3d8aaf2
--- /dev/null
+++ b/libopus/celt/arm/armopts.s.in
@@ -0,0 +1,37 @@
+/* Copyright (C) 2013 Mozilla Corporation */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+; Set the following to 1 if we have EDSP instructions
+; (LDRD/STRD, etc., ARMv5E and later).
+OPUS_ARM_MAY_HAVE_EDSP * @OPUS_ARM_MAY_HAVE_EDSP@
+
+; Set the following to 1 if we have ARMv6 media instructions.
+OPUS_ARM_MAY_HAVE_MEDIA * @OPUS_ARM_MAY_HAVE_MEDIA@
+
+; Set the following to 1 if we have NEON (some ARMv7)
+OPUS_ARM_MAY_HAVE_NEON * @OPUS_ARM_MAY_HAVE_NEON@
+
+END
diff --git a/libopus/celt/arm/armopts_gnu.s b/libopus/celt/arm/armopts_gnu.s
new file mode 100644
index 0000000..c7082fc
--- /dev/null
+++ b/libopus/celt/arm/armopts_gnu.s
@@ -0,0 +1,38 @@
+ .syntax unified
+/* Copyright (C) 2013 Mozilla Corporation */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES@ LOSS OF USE, @ DATA, OR
+ PROFITS@ OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN .if ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+@ Set the following to 1 if we have EDSP instructions
+@ (LDRD/STRD, etc., ARMv5E and later).
+ .set OPUS_ARM_MAY_HAVE_EDSP, 1
+
+@ Set the following to 1 if we have ARMv6 media instructions.
+ .set OPUS_ARM_MAY_HAVE_MEDIA, 1
+
+@ Set the following to 1 if we have NEON (some ARMv7)
+ .set OPUS_ARM_MAY_HAVE_NEON, 1
+
+@ END:
diff --git a/libopus/celt/arm/celt_ne10_fft.c b/libopus/celt/arm/celt_ne10_fft.c
new file mode 100644
index 0000000..42d96a7
--- /dev/null
+++ b/libopus/celt/arm/celt_ne10_fft.c
@@ -0,0 +1,174 @@
+/* Copyright (c) 2015 Xiph.Org Foundation
+ Written by Viswanath Puttagunta */
+/**
+ @file celt_ne10_fft.c
+ @brief ARM Neon optimizations for fft using NE10 library
+ */
+
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef SKIP_CONFIG_H
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#endif
+
+#include <NE10_init.h>
+#include <NE10_dsp.h>
+#include "os_support.h"
+#include "kiss_fft.h"
+#include "stack_alloc.h"
+
+#if !defined(FIXED_POINT)
+# define NE10_FFT_ALLOC_C2C_TYPE_NEON ne10_fft_alloc_c2c_float32_neon
+# define NE10_FFT_CFG_TYPE_T ne10_fft_cfg_float32_t
+# define NE10_FFT_STATE_TYPE_T ne10_fft_state_float32_t
+# define NE10_FFT_DESTROY_C2C_TYPE ne10_fft_destroy_c2c_float32
+# define NE10_FFT_CPX_TYPE_T ne10_fft_cpx_float32_t
+# define NE10_FFT_C2C_1D_TYPE_NEON ne10_fft_c2c_1d_float32_neon
+#else
+# define NE10_FFT_ALLOC_C2C_TYPE_NEON(nfft) ne10_fft_alloc_c2c_int32_neon(nfft)
+# define NE10_FFT_CFG_TYPE_T ne10_fft_cfg_int32_t
+# define NE10_FFT_STATE_TYPE_T ne10_fft_state_int32_t
+# define NE10_FFT_DESTROY_C2C_TYPE ne10_fft_destroy_c2c_int32
+# define NE10_FFT_DESTROY_C2C_TYPE ne10_fft_destroy_c2c_int32
+# define NE10_FFT_CPX_TYPE_T ne10_fft_cpx_int32_t
+# define NE10_FFT_C2C_1D_TYPE_NEON ne10_fft_c2c_1d_int32_neon
+#endif
+
+#if defined(CUSTOM_MODES)
+
+/* nfft lengths in NE10 that support scaled fft */
+# define NE10_FFTSCALED_SUPPORT_MAX 4
+static const int ne10_fft_scaled_support[NE10_FFTSCALED_SUPPORT_MAX] = {
+ 480, 240, 120, 60
+};
+
+int opus_fft_alloc_arm_neon(kiss_fft_state *st)
+{
+ int i;
+ size_t memneeded = sizeof(struct arch_fft_state);
+
+ st->arch_fft = (arch_fft_state *)opus_alloc(memneeded);
+ if (!st->arch_fft)
+ return -1;
+
+ for (i = 0; i < NE10_FFTSCALED_SUPPORT_MAX; i++) {
+ if(st->nfft == ne10_fft_scaled_support[i])
+ break;
+ }
+ if (i == NE10_FFTSCALED_SUPPORT_MAX) {
+ /* This nfft length (scaled fft) is not supported in NE10 */
+ st->arch_fft->is_supported = 0;
+ st->arch_fft->priv = NULL;
+ }
+ else {
+ st->arch_fft->is_supported = 1;
+ st->arch_fft->priv = (void *)NE10_FFT_ALLOC_C2C_TYPE_NEON(st->nfft);
+ if (st->arch_fft->priv == NULL) {
+ return -1;
+ }
+ }
+ return 0;
+}
+
+void opus_fft_free_arm_neon(kiss_fft_state *st)
+{
+ NE10_FFT_CFG_TYPE_T cfg;
+
+ if (!st->arch_fft)
+ return;
+
+ cfg = (NE10_FFT_CFG_TYPE_T)st->arch_fft->priv;
+ if (cfg)
+ NE10_FFT_DESTROY_C2C_TYPE(cfg);
+ opus_free(st->arch_fft);
+}
+#endif
+
+void opus_fft_neon(const kiss_fft_state *st,
+ const kiss_fft_cpx *fin,
+ kiss_fft_cpx *fout)
+{
+ NE10_FFT_STATE_TYPE_T state;
+ NE10_FFT_CFG_TYPE_T cfg = &state;
+ VARDECL(NE10_FFT_CPX_TYPE_T, buffer);
+ SAVE_STACK;
+ ALLOC(buffer, st->nfft, NE10_FFT_CPX_TYPE_T);
+
+ if (!st->arch_fft->is_supported) {
+ /* This nfft length (scaled fft) not supported in NE10 */
+ opus_fft_c(st, fin, fout);
+ }
+ else {
+ memcpy((void *)cfg, st->arch_fft->priv, sizeof(NE10_FFT_STATE_TYPE_T));
+ state.buffer = (NE10_FFT_CPX_TYPE_T *)&buffer[0];
+#if !defined(FIXED_POINT)
+ state.is_forward_scaled = 1;
+
+ NE10_FFT_C2C_1D_TYPE_NEON((NE10_FFT_CPX_TYPE_T *)fout,
+ (NE10_FFT_CPX_TYPE_T *)fin,
+ cfg, 0);
+#else
+ NE10_FFT_C2C_1D_TYPE_NEON((NE10_FFT_CPX_TYPE_T *)fout,
+ (NE10_FFT_CPX_TYPE_T *)fin,
+ cfg, 0, 1);
+#endif
+ }
+ RESTORE_STACK;
+}
+
+void opus_ifft_neon(const kiss_fft_state *st,
+ const kiss_fft_cpx *fin,
+ kiss_fft_cpx *fout)
+{
+ NE10_FFT_STATE_TYPE_T state;
+ NE10_FFT_CFG_TYPE_T cfg = &state;
+ VARDECL(NE10_FFT_CPX_TYPE_T, buffer);
+ SAVE_STACK;
+ ALLOC(buffer, st->nfft, NE10_FFT_CPX_TYPE_T);
+
+ if (!st->arch_fft->is_supported) {
+ /* This nfft length (scaled fft) not supported in NE10 */
+ opus_ifft_c(st, fin, fout);
+ }
+ else {
+ memcpy((void *)cfg, st->arch_fft->priv, sizeof(NE10_FFT_STATE_TYPE_T));
+ state.buffer = (NE10_FFT_CPX_TYPE_T *)&buffer[0];
+#if !defined(FIXED_POINT)
+ state.is_backward_scaled = 0;
+
+ NE10_FFT_C2C_1D_TYPE_NEON((NE10_FFT_CPX_TYPE_T *)fout,
+ (NE10_FFT_CPX_TYPE_T *)fin,
+ cfg, 1);
+#else
+ NE10_FFT_C2C_1D_TYPE_NEON((NE10_FFT_CPX_TYPE_T *)fout,
+ (NE10_FFT_CPX_TYPE_T *)fin,
+ cfg, 1, 0);
+#endif
+ }
+ RESTORE_STACK;
+}
diff --git a/libopus/celt/arm/celt_ne10_mdct.c b/libopus/celt/arm/celt_ne10_mdct.c
new file mode 100644
index 0000000..293c3ef
--- /dev/null
+++ b/libopus/celt/arm/celt_ne10_mdct.c
@@ -0,0 +1,258 @@
+/* Copyright (c) 2015 Xiph.Org Foundation
+ Written by Viswanath Puttagunta */
+/**
+ @file celt_ne10_mdct.c
+ @brief ARM Neon optimizations for mdct using NE10 library
+ */
+
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef SKIP_CONFIG_H
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#endif
+
+#include "kiss_fft.h"
+#include "_kiss_fft_guts.h"
+#include "mdct.h"
+#include "stack_alloc.h"
+
+void clt_mdct_forward_neon(const mdct_lookup *l,
+ kiss_fft_scalar *in,
+ kiss_fft_scalar * OPUS_RESTRICT out,
+ const opus_val16 *window,
+ int overlap, int shift, int stride, int arch)
+{
+ int i;
+ int N, N2, N4;
+ VARDECL(kiss_fft_scalar, f);
+ VARDECL(kiss_fft_cpx, f2);
+ const kiss_fft_state *st = l->kfft[shift];
+ const kiss_twiddle_scalar *trig;
+
+ SAVE_STACK;
+
+ N = l->n;
+ trig = l->trig;
+ for (i=0;i<shift;i++)
+ {
+ N >>= 1;
+ trig += N;
+ }
+ N2 = N>>1;
+ N4 = N>>2;
+
+ ALLOC(f, N2, kiss_fft_scalar);
+ ALLOC(f2, N4, kiss_fft_cpx);
+
+ /* Consider the input to be composed of four blocks: [a, b, c, d] */
+ /* Window, shuffle, fold */
+ {
+ /* Temp pointers to make it really clear to the compiler what we're doing */
+ const kiss_fft_scalar * OPUS_RESTRICT xp1 = in+(overlap>>1);
+ const kiss_fft_scalar * OPUS_RESTRICT xp2 = in+N2-1+(overlap>>1);
+ kiss_fft_scalar * OPUS_RESTRICT yp = f;
+ const opus_val16 * OPUS_RESTRICT wp1 = window+(overlap>>1);
+ const opus_val16 * OPUS_RESTRICT wp2 = window+(overlap>>1)-1;
+ for(i=0;i<((overlap+3)>>2);i++)
+ {
+ /* Real part arranged as -d-cR, Imag part arranged as -b+aR*/
+ *yp++ = MULT16_32_Q15(*wp2, xp1[N2]) + MULT16_32_Q15(*wp1,*xp2);
+ *yp++ = MULT16_32_Q15(*wp1, *xp1) - MULT16_32_Q15(*wp2, xp2[-N2]);
+ xp1+=2;
+ xp2-=2;
+ wp1+=2;
+ wp2-=2;
+ }
+ wp1 = window;
+ wp2 = window+overlap-1;
+ for(;i<N4-((overlap+3)>>2);i++)
+ {
+ /* Real part arranged as a-bR, Imag part arranged as -c-dR */
+ *yp++ = *xp2;
+ *yp++ = *xp1;
+ xp1+=2;
+ xp2-=2;
+ }
+ for(;i<N4;i++)
+ {
+ /* Real part arranged as a-bR, Imag part arranged as -c-dR */
+ *yp++ = -MULT16_32_Q15(*wp1, xp1[-N2]) + MULT16_32_Q15(*wp2, *xp2);
+ *yp++ = MULT16_32_Q15(*wp2, *xp1) + MULT16_32_Q15(*wp1, xp2[N2]);
+ xp1+=2;
+ xp2-=2;
+ wp1+=2;
+ wp2-=2;
+ }
+ }
+ /* Pre-rotation */
+ {
+ kiss_fft_scalar * OPUS_RESTRICT yp = f;
+ const kiss_twiddle_scalar *t = &trig[0];
+ for(i=0;i<N4;i++)
+ {
+ kiss_fft_cpx yc;
+ kiss_twiddle_scalar t0, t1;
+ kiss_fft_scalar re, im, yr, yi;
+ t0 = t[i];
+ t1 = t[N4+i];
+ re = *yp++;
+ im = *yp++;
+ yr = S_MUL(re,t0) - S_MUL(im,t1);
+ yi = S_MUL(im,t0) + S_MUL(re,t1);
+ yc.r = yr;
+ yc.i = yi;
+ f2[i] = yc;
+ }
+ }
+
+ opus_fft(st, f2, (kiss_fft_cpx *)f, arch);
+
+ /* Post-rotate */
+ {
+ /* Temp pointers to make it really clear to the compiler what we're doing */
+ const kiss_fft_cpx * OPUS_RESTRICT fp = (kiss_fft_cpx *)f;
+ kiss_fft_scalar * OPUS_RESTRICT yp1 = out;
+ kiss_fft_scalar * OPUS_RESTRICT yp2 = out+stride*(N2-1);
+ const kiss_twiddle_scalar *t = &trig[0];
+ /* Temp pointers to make it really clear to the compiler what we're doing */
+ for(i=0;i<N4;i++)
+ {
+ kiss_fft_scalar yr, yi;
+ yr = S_MUL(fp->i,t[N4+i]) - S_MUL(fp->r,t[i]);
+ yi = S_MUL(fp->r,t[N4+i]) + S_MUL(fp->i,t[i]);
+ *yp1 = yr;
+ *yp2 = yi;
+ fp++;
+ yp1 += 2*stride;
+ yp2 -= 2*stride;
+ }
+ }
+ RESTORE_STACK;
+}
+
+void clt_mdct_backward_neon(const mdct_lookup *l,
+ kiss_fft_scalar *in,
+ kiss_fft_scalar * OPUS_RESTRICT out,
+ const opus_val16 * OPUS_RESTRICT window,
+ int overlap, int shift, int stride, int arch)
+{
+ int i;
+ int N, N2, N4;
+ VARDECL(kiss_fft_scalar, f);
+ const kiss_twiddle_scalar *trig;
+ const kiss_fft_state *st = l->kfft[shift];
+
+ N = l->n;
+ trig = l->trig;
+ for (i=0;i<shift;i++)
+ {
+ N >>= 1;
+ trig += N;
+ }
+ N2 = N>>1;
+ N4 = N>>2;
+
+ ALLOC(f, N2, kiss_fft_scalar);
+
+ /* Pre-rotate */
+ {
+ /* Temp pointers to make it really clear to the compiler what we're doing */
+ const kiss_fft_scalar * OPUS_RESTRICT xp1 = in;
+ const kiss_fft_scalar * OPUS_RESTRICT xp2 = in+stride*(N2-1);
+ kiss_fft_scalar * OPUS_RESTRICT yp = f;
+ const kiss_twiddle_scalar * OPUS_RESTRICT t = &trig[0];
+ for(i=0;i<N4;i++)
+ {
+ kiss_fft_scalar yr, yi;
+ yr = S_MUL(*xp2, t[i]) + S_MUL(*xp1, t[N4+i]);
+ yi = S_MUL(*xp1, t[i]) - S_MUL(*xp2, t[N4+i]);
+ yp[2*i] = yr;
+ yp[2*i+1] = yi;
+ xp1+=2*stride;
+ xp2-=2*stride;
+ }
+ }
+
+ opus_ifft(st, (kiss_fft_cpx *)f, (kiss_fft_cpx*)(out+(overlap>>1)), arch);
+
+ /* Post-rotate and de-shuffle from both ends of the buffer at once to make
+ it in-place. */
+ {
+ kiss_fft_scalar * yp0 = out+(overlap>>1);
+ kiss_fft_scalar * yp1 = out+(overlap>>1)+N2-2;
+ const kiss_twiddle_scalar *t = &trig[0];
+ /* Loop to (N4+1)>>1 to handle odd N4. When N4 is odd, the
+ middle pair will be computed twice. */
+ for(i=0;i<(N4+1)>>1;i++)
+ {
+ kiss_fft_scalar re, im, yr, yi;
+ kiss_twiddle_scalar t0, t1;
+ re = yp0[0];
+ im = yp0[1];
+ t0 = t[i];
+ t1 = t[N4+i];
+ /* We'd scale up by 2 here, but instead it's done when mixing the windows */
+ yr = S_MUL(re,t0) + S_MUL(im,t1);
+ yi = S_MUL(re,t1) - S_MUL(im,t0);
+ re = yp1[0];
+ im = yp1[1];
+ yp0[0] = yr;
+ yp1[1] = yi;
+
+ t0 = t[(N4-i-1)];
+ t1 = t[(N2-i-1)];
+ /* We'd scale up by 2 here, but instead it's done when mixing the windows */
+ yr = S_MUL(re,t0) + S_MUL(im,t1);
+ yi = S_MUL(re,t1) - S_MUL(im,t0);
+ yp1[0] = yr;
+ yp0[1] = yi;
+ yp0 += 2;
+ yp1 -= 2;
+ }
+ }
+
+ /* Mirror on both sides for TDAC */
+ {
+ kiss_fft_scalar * OPUS_RESTRICT xp1 = out+overlap-1;
+ kiss_fft_scalar * OPUS_RESTRICT yp1 = out;
+ const opus_val16 * OPUS_RESTRICT wp1 = window;
+ const opus_val16 * OPUS_RESTRICT wp2 = window+overlap-1;
+
+ for(i = 0; i < overlap/2; i++)
+ {
+ kiss_fft_scalar x1, x2;
+ x1 = *xp1;
+ x2 = *yp1;
+ *yp1++ = MULT16_32_Q15(*wp2, x2) - MULT16_32_Q15(*wp1, x1);
+ *xp1-- = MULT16_32_Q15(*wp1, x2) + MULT16_32_Q15(*wp2, x1);
+ wp1++;
+ wp2--;
+ }
+ }
+ RESTORE_STACK;
+}
diff --git a/libopus/celt/arm/celt_neon_intr.c b/libopus/celt/arm/celt_neon_intr.c
new file mode 100644
index 0000000..47bbe3d
--- /dev/null
+++ b/libopus/celt/arm/celt_neon_intr.c
@@ -0,0 +1,311 @@
+/* Copyright (c) 2014-2015 Xiph.Org Foundation
+ Written by Viswanath Puttagunta */
+/**
+ @file celt_neon_intr.c
+ @brief ARM Neon Intrinsic optimizations for celt
+ */
+
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <arm_neon.h>
+#include "../pitch.h"
+
+#if defined(FIXED_POINT)
+void xcorr_kernel_neon_fixed(const opus_val16 * x, const opus_val16 * y, opus_val32 sum[4], int len)
+{
+ int j;
+ int32x4_t a = vld1q_s32(sum);
+ /* Load y[0...3] */
+ /* This requires len>0 to always be valid (which we assert in the C code). */
+ int16x4_t y0 = vld1_s16(y);
+ y += 4;
+
+ for (j = 0; j + 8 <= len; j += 8)
+ {
+ /* Load x[0...7] */
+ int16x8_t xx = vld1q_s16(x);
+ int16x4_t x0 = vget_low_s16(xx);
+ int16x4_t x4 = vget_high_s16(xx);
+ /* Load y[4...11] */
+ int16x8_t yy = vld1q_s16(y);
+ int16x4_t y4 = vget_low_s16(yy);
+ int16x4_t y8 = vget_high_s16(yy);
+ int32x4_t a0 = vmlal_lane_s16(a, y0, x0, 0);
+ int32x4_t a1 = vmlal_lane_s16(a0, y4, x4, 0);
+
+ int16x4_t y1 = vext_s16(y0, y4, 1);
+ int16x4_t y5 = vext_s16(y4, y8, 1);
+ int32x4_t a2 = vmlal_lane_s16(a1, y1, x0, 1);
+ int32x4_t a3 = vmlal_lane_s16(a2, y5, x4, 1);
+
+ int16x4_t y2 = vext_s16(y0, y4, 2);
+ int16x4_t y6 = vext_s16(y4, y8, 2);
+ int32x4_t a4 = vmlal_lane_s16(a3, y2, x0, 2);
+ int32x4_t a5 = vmlal_lane_s16(a4, y6, x4, 2);
+
+ int16x4_t y3 = vext_s16(y0, y4, 3);
+ int16x4_t y7 = vext_s16(y4, y8, 3);
+ int32x4_t a6 = vmlal_lane_s16(a5, y3, x0, 3);
+ int32x4_t a7 = vmlal_lane_s16(a6, y7, x4, 3);
+
+ y0 = y8;
+ a = a7;
+ x += 8;
+ y += 8;
+ }
+
+ for (; j < len; j++)
+ {
+ int16x4_t x0 = vld1_dup_s16(x); /* load next x */
+ int32x4_t a0 = vmlal_s16(a, y0, x0);
+
+ int16x4_t y4 = vld1_dup_s16(y); /* load next y */
+ y0 = vext_s16(y0, y4, 1);
+ a = a0;
+ x++;
+ y++;
+ }
+
+ vst1q_s32(sum, a);
+}
+
+#else
+/*
+ * Function: xcorr_kernel_neon_float
+ * ---------------------------------
+ * Computes 4 correlation values and stores them in sum[4]
+ */
+static void xcorr_kernel_neon_float(const float32_t *x, const float32_t *y,
+ float32_t sum[4], int len) {
+ float32x4_t YY[3];
+ float32x4_t YEXT[3];
+ float32x4_t XX[2];
+ float32x2_t XX_2;
+ float32x4_t SUMM;
+ const float32_t *xi = x;
+ const float32_t *yi = y;
+
+ celt_assert(len>0);
+
+ YY[0] = vld1q_f32(yi);
+ SUMM = vdupq_n_f32(0);
+
+ /* Consume 8 elements in x vector and 12 elements in y
+ * vector. However, the 12'th element never really gets
+ * touched in this loop. So, if len == 8, then we only
+ * must access y[0] to y[10]. y[11] must not be accessed
+ * hence make sure len > 8 and not len >= 8
+ */
+ while (len > 8) {
+ yi += 4;
+ YY[1] = vld1q_f32(yi);
+ yi += 4;
+ YY[2] = vld1q_f32(yi);
+
+ XX[0] = vld1q_f32(xi);
+ xi += 4;
+ XX[1] = vld1q_f32(xi);
+ xi += 4;
+
+ SUMM = vmlaq_lane_f32(SUMM, YY[0], vget_low_f32(XX[0]), 0);
+ YEXT[0] = vextq_f32(YY[0], YY[1], 1);
+ SUMM = vmlaq_lane_f32(SUMM, YEXT[0], vget_low_f32(XX[0]), 1);
+ YEXT[1] = vextq_f32(YY[0], YY[1], 2);
+ SUMM = vmlaq_lane_f32(SUMM, YEXT[1], vget_high_f32(XX[0]), 0);
+ YEXT[2] = vextq_f32(YY[0], YY[1], 3);
+ SUMM = vmlaq_lane_f32(SUMM, YEXT[2], vget_high_f32(XX[0]), 1);
+
+ SUMM = vmlaq_lane_f32(SUMM, YY[1], vget_low_f32(XX[1]), 0);
+ YEXT[0] = vextq_f32(YY[1], YY[2], 1);
+ SUMM = vmlaq_lane_f32(SUMM, YEXT[0], vget_low_f32(XX[1]), 1);
+ YEXT[1] = vextq_f32(YY[1], YY[2], 2);
+ SUMM = vmlaq_lane_f32(SUMM, YEXT[1], vget_high_f32(XX[1]), 0);
+ YEXT[2] = vextq_f32(YY[1], YY[2], 3);
+ SUMM = vmlaq_lane_f32(SUMM, YEXT[2], vget_high_f32(XX[1]), 1);
+
+ YY[0] = YY[2];
+ len -= 8;
+ }
+
+ /* Consume 4 elements in x vector and 8 elements in y
+ * vector. However, the 8'th element in y never really gets
+ * touched in this loop. So, if len == 4, then we only
+ * must access y[0] to y[6]. y[7] must not be accessed
+ * hence make sure len>4 and not len>=4
+ */
+ if (len > 4) {
+ yi += 4;
+ YY[1] = vld1q_f32(yi);
+
+ XX[0] = vld1q_f32(xi);
+ xi += 4;
+
+ SUMM = vmlaq_lane_f32(SUMM, YY[0], vget_low_f32(XX[0]), 0);
+ YEXT[0] = vextq_f32(YY[0], YY[1], 1);
+ SUMM = vmlaq_lane_f32(SUMM, YEXT[0], vget_low_f32(XX[0]), 1);
+ YEXT[1] = vextq_f32(YY[0], YY[1], 2);
+ SUMM = vmlaq_lane_f32(SUMM, YEXT[1], vget_high_f32(XX[0]), 0);
+ YEXT[2] = vextq_f32(YY[0], YY[1], 3);
+ SUMM = vmlaq_lane_f32(SUMM, YEXT[2], vget_high_f32(XX[0]), 1);
+
+ YY[0] = YY[1];
+ len -= 4;
+ }
+
+ while (--len > 0) {
+ XX_2 = vld1_dup_f32(xi++);
+ SUMM = vmlaq_lane_f32(SUMM, YY[0], XX_2, 0);
+ YY[0]= vld1q_f32(++yi);
+ }
+
+ XX_2 = vld1_dup_f32(xi);
+ SUMM = vmlaq_lane_f32(SUMM, YY[0], XX_2, 0);
+
+ vst1q_f32(sum, SUMM);
+}
+
+/*
+ * Function: xcorr_kernel_neon_float_process1
+ * ---------------------------------
+ * Computes single correlation values and stores in *sum
+ */
+static void xcorr_kernel_neon_float_process1(const float32_t *x,
+ const float32_t *y, float32_t *sum, int len) {
+ float32x4_t XX[4];
+ float32x4_t YY[4];
+ float32x2_t XX_2;
+ float32x2_t YY_2;
+ float32x4_t SUMM;
+ float32x2_t SUMM_2[2];
+ const float32_t *xi = x;
+ const float32_t *yi = y;
+
+ SUMM = vdupq_n_f32(0);
+
+ /* Work on 16 values per iteration */
+ while (len >= 16) {
+ XX[0] = vld1q_f32(xi);
+ xi += 4;
+ XX[1] = vld1q_f32(xi);
+ xi += 4;
+ XX[2] = vld1q_f32(xi);
+ xi += 4;
+ XX[3] = vld1q_f32(xi);
+ xi += 4;
+
+ YY[0] = vld1q_f32(yi);
+ yi += 4;
+ YY[1] = vld1q_f32(yi);
+ yi += 4;
+ YY[2] = vld1q_f32(yi);
+ yi += 4;
+ YY[3] = vld1q_f32(yi);
+ yi += 4;
+
+ SUMM = vmlaq_f32(SUMM, YY[0], XX[0]);
+ SUMM = vmlaq_f32(SUMM, YY[1], XX[1]);
+ SUMM = vmlaq_f32(SUMM, YY[2], XX[2]);
+ SUMM = vmlaq_f32(SUMM, YY[3], XX[3]);
+ len -= 16;
+ }
+
+ /* Work on 8 values */
+ if (len >= 8) {
+ XX[0] = vld1q_f32(xi);
+ xi += 4;
+ XX[1] = vld1q_f32(xi);
+ xi += 4;
+
+ YY[0] = vld1q_f32(yi);
+ yi += 4;
+ YY[1] = vld1q_f32(yi);
+ yi += 4;
+
+ SUMM = vmlaq_f32(SUMM, YY[0], XX[0]);
+ SUMM = vmlaq_f32(SUMM, YY[1], XX[1]);
+ len -= 8;
+ }
+
+ /* Work on 4 values */
+ if (len >= 4) {
+ XX[0] = vld1q_f32(xi);
+ xi += 4;
+ YY[0] = vld1q_f32(yi);
+ yi += 4;
+ SUMM = vmlaq_f32(SUMM, YY[0], XX[0]);
+ len -= 4;
+ }
+
+ /* Start accumulating results */
+ SUMM_2[0] = vget_low_f32(SUMM);
+ if (len >= 2) {
+ /* While at it, consume 2 more values if available */
+ XX_2 = vld1_f32(xi);
+ xi += 2;
+ YY_2 = vld1_f32(yi);
+ yi += 2;
+ SUMM_2[0] = vmla_f32(SUMM_2[0], YY_2, XX_2);
+ len -= 2;
+ }
+ SUMM_2[1] = vget_high_f32(SUMM);
+ SUMM_2[0] = vadd_f32(SUMM_2[0], SUMM_2[1]);
+ SUMM_2[0] = vpadd_f32(SUMM_2[0], SUMM_2[0]);
+ /* Ok, now we have result accumulated in SUMM_2[0].0 */
+
+ if (len > 0) {
+ /* Case when you have one value left */
+ XX_2 = vld1_dup_f32(xi);
+ YY_2 = vld1_dup_f32(yi);
+ SUMM_2[0] = vmla_f32(SUMM_2[0], XX_2, YY_2);
+ }
+
+ vst1_lane_f32(sum, SUMM_2[0], 0);
+}
+
+void celt_pitch_xcorr_float_neon(const opus_val16 *_x, const opus_val16 *_y,
+ opus_val32 *xcorr, int len, int max_pitch) {
+ int i;
+ celt_assert(max_pitch > 0);
+ celt_assert((((unsigned char *)_x-(unsigned char *)NULL)&3)==0);
+
+ for (i = 0; i < (max_pitch-3); i += 4) {
+ xcorr_kernel_neon_float((const float32_t *)_x, (const float32_t *)_y+i,
+ (float32_t *)xcorr+i, len);
+ }
+
+ /* In case max_pitch isn't multiple of 4
+ * compute single correlation value per iteration
+ */
+ for (; i < max_pitch; i++) {
+ xcorr_kernel_neon_float_process1((const float32_t *)_x,
+ (const float32_t *)_y+i, (float32_t *)xcorr+i, len);
+ }
+}
+#endif
diff --git a/libopus/celt/arm/celt_pitch_xcorr_arm-gnu.S_gnu.s b/libopus/celt/arm/celt_pitch_xcorr_arm-gnu.S_gnu.s
new file mode 100644
index 0000000..b62c520
--- /dev/null
+++ b/libopus/celt/arm/celt_pitch_xcorr_arm-gnu.S_gnu.s
@@ -0,0 +1,552 @@
+ .syntax unified
+ .syntax unified
+,: Copyright (c) 2007-2008 CSIRO
+,: Copyright (c) 2007-2009 Xiph.Org Foundation
+,: Copyright (c) 2013 Parrot
+,: Written by Aurélien Zanelli
+,:
+,: Redistribution and use in source and binary forms, with or without
+,: modification, are permitted provided that the following conditions
+,: are met:
+,:
+,: - Redistributions of source code must retain the above copyright
+,: notice, this list of conditions and the following disclaimer.
+,:
+,: - Redistributions in binary form must reproduce the above copyright
+,: notice, this list of conditions and the following disclaimer in the
+,: documentation and/or other materials provided with the distribution.
+,:
+,: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+,: ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+,: LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+,: A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+,: OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+,: EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+,: PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES@ LOSS OF USE, @ DATA, OR
+,: PROFITS@ OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+,: LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+,: NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+,: SOFTWARE, EVEN .if ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ .text@ .p2align 2; .arch armv7-a
+ .fpu neon
+ .object_arch armv4t
+
+ .include "celt/arm/armopts_gnu.s"
+
+ .if OPUS_ARM_MAY_HAVE_EDSP
+ .global celt_pitch_xcorr_edsp
+ .endif
+
+ .if OPUS_ARM_MAY_HAVE_NEON
+ .global celt_pitch_xcorr_neon
+ .endif
+
+ .if OPUS_ARM_MAY_HAVE_NEON
+
+,: Compute sum[k]=sum(x[j]*y[j+k],j=0...len-1), k=0...3
+@ xcorr_kernel_neon: @ PROC
+xcorr_kernel_neon_start::
+ ,: input:
+ ,: r3 = int len
+ ,: r4 = opus_val16 *x
+ ,: r5 = opus_val16 *y
+ ,: q0 = opus_val32 sum[4]
+ ,: output:
+ ,: q0 = opus_val32 sum[4]
+ ,: preserved: r0-r3, r6-r11, d2, q4-q7, q9-q15
+ ,: internal usage:
+ ,: r12 = int j
+ ,: d3 = y_3|y_2|y_1|y_0
+ ,: q2 = y_B|y_A|y_9|y_8|y_7|y_6|y_5|y_4
+ ,: q3 = x_7|x_6|x_5|x_4|x_3|x_2|x_1|x_0
+ ,: q8 = scratch
+ ,:
+ ,: Load y[0...3]
+ ,: This requires len>0 to always be valid (which we assert in the C code).
+ VLD1.16 {d5}, [r5]!
+ SUBS r12, r3, #8
+ BLE xcorr_kernel_neon_process4
+,: Process 8 samples at a time.
+,: This loop loads one y value more than we actually need. Therefore we have to
+,: stop as soon as there are 8 or fewer samples left (instead of 7), to avoid
+,: reading past the end of the array.
+xcorr_kernel_neon_process8::
+ ,: This loop has 19 total instructions (10 cycles to issue, minimum), with
+ ,: - 2 cycles of ARM insrtuctions,
+ ,: - 10 cycles of load/store/byte permute instructions, and
+ ,: - 9 cycles of data processing instructions.
+ ,: On a Cortex A8, we dual-issue the maximum amount (9 cycles) between the
+ ,: latter two categories, meaning the whole loop should run in 10 cycles per
+ ,: iteration, barring cache misses.
+ ,:
+ ,: Load x[0...7]
+ VLD1.16 {d6, d7}, [r4]!
+ ,: Unlike VMOV, VAND is a data processsing instruction (and doesn't get
+ ,: assembled to VMOV, like VORR would), so it dual-issues with the prior VLD1.
+ VAND d3, d5, d5
+ SUBS r12, r12, #8
+ ,: Load y[4...11]
+ VLD1.16 {d4, d5}, [r5]!
+ VMLAL.S16 q0, d3, d6[0]
+ VEXT.16 d16, d3, d4, #1
+ VMLAL.S16 q0, d4, d7[0]
+ VEXT.16 d17, d4, d5, #1
+ VMLAL.S16 q0, d16, d6[1]
+ VEXT.16 d16, d3, d4, #2
+ VMLAL.S16 q0, d17, d7[1]
+ VEXT.16 d17, d4, d5, #2
+ VMLAL.S16 q0, d16, d6[2]
+ VEXT.16 d16, d3, d4, #3
+ VMLAL.S16 q0, d17, d7[2]
+ VEXT.16 d17, d4, d5, #3
+ VMLAL.S16 q0, d16, d6[3]
+ VMLAL.S16 q0, d17, d7[3]
+ BGT xcorr_kernel_neon_process8
+,: Process 4 samples here if we have > 4 left (still reading one extra y value).
+xcorr_kernel_neon_process4::
+ ADDS r12, r12, #4
+ BLE xcorr_kernel_neon_process2
+ ,: Load x[0...3]
+ VLD1.16 d6, [r4]!
+ ,: Use VAND since it's a data processing instruction again.
+ VAND d4, d5, d5
+ SUB r12, r12, #4
+ ,: Load y[4...7]
+ VLD1.16 d5, [r5]!
+ VMLAL.S16 q0, d4, d6[0]
+ VEXT.16 d16, d4, d5, #1
+ VMLAL.S16 q0, d16, d6[1]
+ VEXT.16 d16, d4, d5, #2
+ VMLAL.S16 q0, d16, d6[2]
+ VEXT.16 d16, d4, d5, #3
+ VMLAL.S16 q0, d16, d6[3]
+,: Process 2 samples here if we have > 2 left (still reading one extra y value).
+xcorr_kernel_neon_process2::
+ ADDS r12, r12, #2
+ BLE xcorr_kernel_neon_process1
+ ,: Load x[0...1]
+ VLD2.16 {d6[],d7[]}, [r4]!
+ ,: Use VAND since it's a data processing instruction again.
+ VAND d4, d5, d5
+ SUB r12, r12, #2
+ ,: Load y[4...5]
+ VLD1.32 {d5[]}, [r5]!
+ VMLAL.S16 q0, d4, d6
+ VEXT.16 d16, d4, d5, #1
+ ,: Replace bottom copy of {y5,y4} in d5 with {y3,y2} from d4, using VSRI
+ ,: instead of VEXT, since it's a data-processing instruction.
+ VSRI.64 d5, d4, #32
+ VMLAL.S16 q0, d16, d7
+,: Process 1 sample using the extra y value we loaded above.
+xcorr_kernel_neon_process1::
+ ,: Load next *x
+ VLD1.16 {d6[]}, [r4]!
+ ADDS r12, r12, #1
+ ,: y[0...3] are left in d5 from prior iteration(s) (if any)
+ VMLAL.S16 q0, d5, d6
+ MOVLE pc, lr
+,: Now process 1 last sample, not reading ahead.
+ ,: Load last *y
+ VLD1.16 {d4[]}, [r5]!
+ VSRI.64 d4, d5, #16
+ ,: Load last *x
+ VLD1.16 {d6[]}, [r4]!
+ VMLAL.S16 q0, d4, d6
+ MOV pc, lr
+ .size xcorr_kernel_neon, .-xcorr_kernel_neon ,: @ ENDP
+
+,: opus_val32 celt_pitch_xcorr_neon(opus_val16 *_x, opus_val16 *_y,
+,: opus_val32 *xcorr, int len, int max_pitch)
+@ celt_pitch_xcorr_neon: @ PROC
+ ,: input:
+ ,: r0 = opus_val16 *_x
+ ,: r1 = opus_val16 *_y
+ ,: r2 = opus_val32 *xcorr
+ ,: r3 = int len
+ ,: output:
+ ,: r0 = int maxcorr
+ ,: internal usage:
+ ,: r4 = opus_val16 *x (for xcorr_kernel_neon())
+ ,: r5 = opus_val16 *y (for xcorr_kernel_neon())
+ ,: r6 = int max_pitch
+ ,: r12 = int j
+ ,: q15 = int maxcorr[4] (q15 is not used by xcorr_kernel_neon())
+ STMFD sp!, {r4-r6, lr}
+ LDR r6, [sp, #16]
+ VMOV.S32 q15, #1
+ ,: if (max_pitch < 4) goto celt_pitch_xcorr_neon_process4_done
+ SUBS r6, r6, #4
+ BLT celt_pitch_xcorr_neon_process4_done
+celt_pitch_xcorr_neon_process4::
+ ,: xcorr_kernel_neon parameters:
+ ,: r3 = len, r4 = _x, r5 = _y, q0 = {0, 0, 0, 0}
+ MOV r4, r0
+ MOV r5, r1
+ VEOR q0, q0, q0
+ ,: xcorr_kernel_neon only modifies r4, r5, r12, and q0...q3.
+ ,: So we don't save/restore any other registers.
+ BL xcorr_kernel_neon_start
+ SUBS r6, r6, #4
+ VST1.32 {q0}, [r2]!
+ ,: _y += 4
+ ADD r1, r1, #8
+ VMAX.S32 q15, q15, q0
+ ,: if (max_pitch < 4) goto celt_pitch_xcorr_neon_process4_done
+ BGE celt_pitch_xcorr_neon_process4
+,: We have less than 4 sums left to compute.
+celt_pitch_xcorr_neon_process4_done::
+ ADDS r6, r6, #4
+ ,: Reduce maxcorr to a single value
+ VMAX.S32 d30, d30, d31
+ VPMAX.S32 d30, d30, d30
+ ,: if (max_pitch <= 0) goto celt_pitch_xcorr_neon_done
+ BLE celt_pitch_xcorr_neon_done
+,: Now compute each remaining sum one at a time.
+celt_pitch_xcorr_neon_process_remaining::
+ MOV r4, r0
+ MOV r5, r1
+ VMOV.I32 q0, #0
+ SUBS r12, r3, #8
+ BLT celt_pitch_xcorr_neon_process_remaining4
+,: Sum terms 8 at a time.
+celt_pitch_xcorr_neon_process_remaining_loop8::
+ ,: Load x[0...7]
+ VLD1.16 {q1}, [r4]!
+ ,: Load y[0...7]
+ VLD1.16 {q2}, [r5]!
+ SUBS r12, r12, #8
+ VMLAL.S16 q0, d4, d2
+ VMLAL.S16 q0, d5, d3
+ BGE celt_pitch_xcorr_neon_process_remaining_loop8
+,: Sum terms 4 at a time.
+celt_pitch_xcorr_neon_process_remaining4::
+ ADDS r12, r12, #4
+ BLT celt_pitch_xcorr_neon_process_remaining4_done
+ ,: Load x[0...3]
+ VLD1.16 {d2}, [r4]!
+ ,: Load y[0...3]
+ VLD1.16 {d3}, [r5]!
+ SUB r12, r12, #4
+ VMLAL.S16 q0, d3, d2
+celt_pitch_xcorr_neon_process_remaining4_done::
+ ,: Reduce the sum to a single value.
+ VADD.S32 d0, d0, d1
+ VPADDL.S32 d0, d0
+ ADDS r12, r12, #4
+ BLE celt_pitch_xcorr_neon_process_remaining_loop_done
+,: Sum terms 1 at a time.
+celt_pitch_xcorr_neon_process_remaining_loop1::
+ VLD1.16 {d2[]}, [r4]!
+ VLD1.16 {d3[]}, [r5]!
+ SUBS r12, r12, #1
+ VMLAL.S16 q0, d2, d3
+ BGT celt_pitch_xcorr_neon_process_remaining_loop1
+celt_pitch_xcorr_neon_process_remaining_loop_done::
+ VST1.32 {d0[0]}, [r2]!
+ VMAX.S32 d30, d30, d0
+ SUBS r6, r6, #1
+ ,: _y++
+ ADD r1, r1, #2
+ ,: if (--max_pitch > 0) goto celt_pitch_xcorr_neon_process_remaining
+ BGT celt_pitch_xcorr_neon_process_remaining
+celt_pitch_xcorr_neon_done::
+ VMOV.32 r0, d30[0]
+ LDMFD sp!, {r4-r6, pc}
+ .size celt_pitch_xcorr_neon, .-celt_pitch_xcorr_neon ,: @ ENDP
+
+ .endif
+
+ .if OPUS_ARM_MAY_HAVE_EDSP
+
+,: This will get used on ARMv7 devices without NEON, so it has been optimized
+,: to take advantage of dual-issuing where possible.
+@ xcorr_kernel_edsp: @ PROC
+xcorr_kernel_edsp_start::
+ ,: input:
+ ,: r3 = int len
+ ,: r4 = opus_val16 *_x (must be 32-bit aligned)
+ ,: r5 = opus_val16 *_y (must be 32-bit aligned)
+ ,: r6...r9 = opus_val32 sum[4]
+ ,: output:
+ ,: r6...r9 = opus_val32 sum[4]
+ ,: preserved: r0-r5
+ ,: internal usage
+ ,: r2 = int j
+ ,: r12,r14 = opus_val16 x[4]
+ ,: r10,r11 = opus_val16 y[4]
+ STMFD sp!, {r2,r4,r5,lr}
+ LDR r10, [r5], #4 ,: Load y[0...1]
+ SUBS r2, r3, #4 ,: j = len-4
+ LDR r11, [r5], #4 ,: Load y[2...3]
+ BLE xcorr_kernel_edsp_process4_done
+ LDR r12, [r4], #4 ,: Load x[0...1]
+ ,: Stall
+xcorr_kernel_edsp_process4::
+ ,: The multiplies must issue from pipeline 0, and can't dual-issue with each
+ ,: other. Every other instruction here dual-issues with a multiply, and is
+ ,: thus "free". There should be no stalls in the body of the loop.
+ SMLABB r6, r12, r10, r6 ,: sum[0] = MAC16_16(sum[0],x_0,y_0)
+ LDR r14, [r4], #4 ,: Load x[2...3]
+ SMLABT r7, r12, r10, r7 ,: sum[1] = MAC16_16(sum[1],x_0,y_1)
+ SUBS r2, r2, #4 ,: j-=4
+ SMLABB r8, r12, r11, r8 ,: sum[2] = MAC16_16(sum[2],x_0,y_2)
+ SMLABT r9, r12, r11, r9 ,: sum[3] = MAC16_16(sum[3],x_0,y_3)
+ SMLATT r6, r12, r10, r6 ,: sum[0] = MAC16_16(sum[0],x_1,y_1)
+ LDR r10, [r5], #4 ,: Load y[4...5]
+ SMLATB r7, r12, r11, r7 ,: sum[1] = MAC16_16(sum[1],x_1,y_2)
+ SMLATT r8, r12, r11, r8 ,: sum[2] = MAC16_16(sum[2],x_1,y_3)
+ SMLATB r9, r12, r10, r9 ,: sum[3] = MAC16_16(sum[3],x_1,y_4)
+ LDRGT r12, [r4], #4 ,: Load x[0...1]
+ SMLABB r6, r14, r11, r6 ,: sum[0] = MAC16_16(sum[0],x_2,y_2)
+ SMLABT r7, r14, r11, r7 ,: sum[1] = MAC16_16(sum[1],x_2,y_3)
+ SMLABB r8, r14, r10, r8 ,: sum[2] = MAC16_16(sum[2],x_2,y_4)
+ SMLABT r9, r14, r10, r9 ,: sum[3] = MAC16_16(sum[3],x_2,y_5)
+ SMLATT r6, r14, r11, r6 ,: sum[0] = MAC16_16(sum[0],x_3,y_3)
+ LDR r11, [r5], #4 ,: Load y[6...7]
+ SMLATB r7, r14, r10, r7 ,: sum[1] = MAC16_16(sum[1],x_3,y_4)
+ SMLATT r8, r14, r10, r8 ,: sum[2] = MAC16_16(sum[2],x_3,y_5)
+ SMLATB r9, r14, r11, r9 ,: sum[3] = MAC16_16(sum[3],x_3,y_6)
+ BGT xcorr_kernel_edsp_process4
+xcorr_kernel_edsp_process4_done::
+ ADDS r2, r2, #4
+ BLE xcorr_kernel_edsp_done
+ LDRH r12, [r4], #2 ,: r12 = *x++
+ SUBS r2, r2, #1 ,: j--
+ ,: Stall
+ SMLABB r6, r12, r10, r6 ,: sum[0] = MAC16_16(sum[0],x,y_0)
+ LDRHGT r14, [r4], #2 ,: r14 = *x++
+ SMLABT r7, r12, r10, r7 ,: sum[1] = MAC16_16(sum[1],x,y_1)
+ SMLABB r8, r12, r11, r8 ,: sum[2] = MAC16_16(sum[2],x,y_2)
+ SMLABT r9, r12, r11, r9 ,: sum[3] = MAC16_16(sum[3],x,y_3)
+ BLE xcorr_kernel_edsp_done
+ SMLABT r6, r14, r10, r6 ,: sum[0] = MAC16_16(sum[0],x,y_1)
+ SUBS r2, r2, #1 ,: j--
+ SMLABB r7, r14, r11, r7 ,: sum[1] = MAC16_16(sum[1],x,y_2)
+ LDRH r10, [r5], #2 ,: r10 = y_4 = *y++
+ SMLABT r8, r14, r11, r8 ,: sum[2] = MAC16_16(sum[2],x,y_3)
+ LDRHGT r12, [r4], #2 ,: r12 = *x++
+ SMLABB r9, r14, r10, r9 ,: sum[3] = MAC16_16(sum[3],x,y_4)
+ BLE xcorr_kernel_edsp_done
+ SMLABB r6, r12, r11, r6 ,: sum[0] = MAC16_16(sum[0],tmp,y_2)
+ CMP r2, #1 ,: j--
+ SMLABT r7, r12, r11, r7 ,: sum[1] = MAC16_16(sum[1],tmp,y_3)
+ LDRH r2, [r5], #2 ,: r2 = y_5 = *y++
+ SMLABB r8, r12, r10, r8 ,: sum[2] = MAC16_16(sum[2],tmp,y_4)
+ LDRHGT r14, [r4] ,: r14 = *x
+ SMLABB r9, r12, r2, r9 ,: sum[3] = MAC16_16(sum[3],tmp,y_5)
+ BLE xcorr_kernel_edsp_done
+ SMLABT r6, r14, r11, r6 ,: sum[0] = MAC16_16(sum[0],tmp,y_3)
+ LDRH r11, [r5] ,: r11 = y_6 = *y
+ SMLABB r7, r14, r10, r7 ,: sum[1] = MAC16_16(sum[1],tmp,y_4)
+ SMLABB r8, r14, r2, r8 ,: sum[2] = MAC16_16(sum[2],tmp,y_5)
+ SMLABB r9, r14, r11, r9 ,: sum[3] = MAC16_16(sum[3],tmp,y_6)
+xcorr_kernel_edsp_done::
+ LDMFD sp!, {r2,r4,r5,pc}
+ .size xcorr_kernel_edsp, .-xcorr_kernel_edsp ,: @ ENDP
+
+@ celt_pitch_xcorr_edsp: @ PROC
+ ,: input:
+ ,: r0 = opus_val16 *_x (must be 32-bit aligned)
+ ,: r1 = opus_val16 *_y (only needs to be 16-bit aligned)
+ ,: r2 = opus_val32 *xcorr
+ ,: r3 = int len
+ ,: output:
+ ,: r0 = maxcorr
+ ,: internal usage
+ ,: r4 = opus_val16 *x
+ ,: r5 = opus_val16 *y
+ ,: r6 = opus_val32 sum0
+ ,: r7 = opus_val32 sum1
+ ,: r8 = opus_val32 sum2
+ ,: r9 = opus_val32 sum3
+ ,: r1 = int max_pitch
+ ,: r12 = int j
+ STMFD sp!, {r4-r11, lr}
+ MOV r5, r1
+ LDR r1, [sp, #36]
+ MOV r4, r0
+ TST r5, #3
+ ,: maxcorr = 1
+ MOV r0, #1
+ BEQ celt_pitch_xcorr_edsp_process1u_done
+,: Compute one sum at the start to make y 32-bit aligned.
+ SUBS r12, r3, #4
+ ,: r14 = sum = 0
+ MOV r14, #0
+ LDRH r8, [r5], #2
+ BLE celt_pitch_xcorr_edsp_process1u_loop4_done
+ LDR r6, [r4], #4
+ MOV r8, r8, LSL #16
+celt_pitch_xcorr_edsp_process1u_loop4::
+ LDR r9, [r5], #4
+ SMLABT r14, r6, r8, r14 ,: sum = MAC16_16(sum, x_0, y_0)
+ LDR r7, [r4], #4
+ SMLATB r14, r6, r9, r14 ,: sum = MAC16_16(sum, x_1, y_1)
+ LDR r8, [r5], #4
+ SMLABT r14, r7, r9, r14 ,: sum = MAC16_16(sum, x_2, y_2)
+ SUBS r12, r12, #4 ,: j-=4
+ SMLATB r14, r7, r8, r14 ,: sum = MAC16_16(sum, x_3, y_3)
+ LDRGT r6, [r4], #4
+ BGT celt_pitch_xcorr_edsp_process1u_loop4
+ MOV r8, r8, LSR #16
+celt_pitch_xcorr_edsp_process1u_loop4_done::
+ ADDS r12, r12, #4
+celt_pitch_xcorr_edsp_process1u_loop1::
+ LDRHGE r6, [r4], #2
+ ,: Stall
+ SMLABBGE r14, r6, r8, r14 ,: sum = MAC16_16(sum, *x, *y)
+ SUBSGE r12, r12, #1
+ LDRHGT r8, [r5], #2
+ BGT celt_pitch_xcorr_edsp_process1u_loop1
+ ,: Restore _x
+ SUB r4, r4, r3, LSL #1
+ ,: Restore and advance _y
+ SUB r5, r5, r3, LSL #1
+ ,: maxcorr = max(maxcorr, sum)
+ CMP r0, r14
+ ADD r5, r5, #2
+ MOVLT r0, r14
+ SUBS r1, r1, #1
+ ,: xcorr[i] = sum
+ STR r14, [r2], #4
+ BLE celt_pitch_xcorr_edsp_done
+celt_pitch_xcorr_edsp_process1u_done::
+ ,: if (max_pitch < 4) goto celt_pitch_xcorr_edsp_process2
+ SUBS r1, r1, #4
+ BLT celt_pitch_xcorr_edsp_process2
+celt_pitch_xcorr_edsp_process4::
+ ,: xcorr_kernel_edsp parameters:
+ ,: r3 = len, r4 = _x, r5 = _y, r6...r9 = sum[4] = {0, 0, 0, 0}
+ MOV r6, #0
+ MOV r7, #0
+ MOV r8, #0
+ MOV r9, #0
+ BL xcorr_kernel_edsp_start ,: xcorr_kernel_edsp(_x, _y+i, xcorr+i, len)
+ ,: maxcorr = max(maxcorr, sum0, sum1, sum2, sum3)
+ CMP r0, r6
+ ,: _y+=4
+ ADD r5, r5, #8
+ MOVLT r0, r6
+ CMP r0, r7
+ MOVLT r0, r7
+ CMP r0, r8
+ MOVLT r0, r8
+ CMP r0, r9
+ MOVLT r0, r9
+ STMIA r2!, {r6-r9}
+ SUBS r1, r1, #4
+ BGE celt_pitch_xcorr_edsp_process4
+celt_pitch_xcorr_edsp_process2::
+ ADDS r1, r1, #2
+ BLT celt_pitch_xcorr_edsp_process1a
+ SUBS r12, r3, #4
+ ,: {r10, r11} = {sum0, sum1} = {0, 0}
+ MOV r10, #0
+ MOV r11, #0
+ LDR r8, [r5], #4
+ BLE celt_pitch_xcorr_edsp_process2_loop_done
+ LDR r6, [r4], #4
+ LDR r9, [r5], #4
+celt_pitch_xcorr_edsp_process2_loop4::
+ SMLABB r10, r6, r8, r10 ,: sum0 = MAC16_16(sum0, x_0, y_0)
+ LDR r7, [r4], #4
+ SMLABT r11, r6, r8, r11 ,: sum1 = MAC16_16(sum1, x_0, y_1)
+ SUBS r12, r12, #4 ,: j-=4
+ SMLATT r10, r6, r8, r10 ,: sum0 = MAC16_16(sum0, x_1, y_1)
+ LDR r8, [r5], #4
+ SMLATB r11, r6, r9, r11 ,: sum1 = MAC16_16(sum1, x_1, y_2)
+ LDRGT r6, [r4], #4
+ SMLABB r10, r7, r9, r10 ,: sum0 = MAC16_16(sum0, x_2, y_2)
+ SMLABT r11, r7, r9, r11 ,: sum1 = MAC16_16(sum1, x_2, y_3)
+ SMLATT r10, r7, r9, r10 ,: sum0 = MAC16_16(sum0, x_3, y_3)
+ LDRGT r9, [r5], #4
+ SMLATB r11, r7, r8, r11 ,: sum1 = MAC16_16(sum1, x_3, y_4)
+ BGT celt_pitch_xcorr_edsp_process2_loop4
+celt_pitch_xcorr_edsp_process2_loop_done::
+ ADDS r12, r12, #2
+ BLE celt_pitch_xcorr_edsp_process2_1
+ LDR r6, [r4], #4
+ ,: Stall
+ SMLABB r10, r6, r8, r10 ,: sum0 = MAC16_16(sum0, x_0, y_0)
+ LDR r9, [r5], #4
+ SMLABT r11, r6, r8, r11 ,: sum1 = MAC16_16(sum1, x_0, y_1)
+ SUB r12, r12, #2
+ SMLATT r10, r6, r8, r10 ,: sum0 = MAC16_16(sum0, x_1, y_1)
+ MOV r8, r9
+ SMLATB r11, r6, r9, r11 ,: sum1 = MAC16_16(sum1, x_1, y_2)
+celt_pitch_xcorr_edsp_process2_1::
+ LDRH r6, [r4], #2
+ ADDS r12, r12, #1
+ ,: Stall
+ SMLABB r10, r6, r8, r10 ,: sum0 = MAC16_16(sum0, x_0, y_0)
+ LDRHGT r7, [r4], #2
+ SMLABT r11, r6, r8, r11 ,: sum1 = MAC16_16(sum1, x_0, y_1)
+ BLE celt_pitch_xcorr_edsp_process2_done
+ LDRH r9, [r5], #2
+ SMLABT r10, r7, r8, r10 ,: sum0 = MAC16_16(sum0, x_0, y_1)
+ SMLABB r11, r7, r9, r11 ,: sum1 = MAC16_16(sum1, x_0, y_2)
+celt_pitch_xcorr_edsp_process2_done::
+ ,: Restore _x
+ SUB r4, r4, r3, LSL #1
+ ,: Restore and advance _y
+ SUB r5, r5, r3, LSL #1
+ ,: maxcorr = max(maxcorr, sum0)
+ CMP r0, r10
+ ADD r5, r5, #2
+ MOVLT r0, r10
+ SUB r1, r1, #2
+ ,: maxcorr = max(maxcorr, sum1)
+ CMP r0, r11
+ ,: xcorr[i] = sum
+ STR r10, [r2], #4
+ MOVLT r0, r11
+ STR r11, [r2], #4
+celt_pitch_xcorr_edsp_process1a::
+ ADDS r1, r1, #1
+ BLT celt_pitch_xcorr_edsp_done
+ SUBS r12, r3, #4
+ ,: r14 = sum = 0
+ MOV r14, #0
+ BLT celt_pitch_xcorr_edsp_process1a_loop_done
+ LDR r6, [r4], #4
+ LDR r8, [r5], #4
+ LDR r7, [r4], #4
+ LDR r9, [r5], #4
+celt_pitch_xcorr_edsp_process1a_loop4::
+ SMLABB r14, r6, r8, r14 ,: sum = MAC16_16(sum, x_0, y_0)
+ SUBS r12, r12, #4 ,: j-=4
+ SMLATT r14, r6, r8, r14 ,: sum = MAC16_16(sum, x_1, y_1)
+ LDRGE r6, [r4], #4
+ SMLABB r14, r7, r9, r14 ,: sum = MAC16_16(sum, x_2, y_2)
+ LDRGE r8, [r5], #4
+ SMLATT r14, r7, r9, r14 ,: sum = MAC16_16(sum, x_3, y_3)
+ LDRGE r7, [r4], #4
+ LDRGE r9, [r5], #4
+ BGE celt_pitch_xcorr_edsp_process1a_loop4
+celt_pitch_xcorr_edsp_process1a_loop_done::
+ ADDS r12, r12, #2
+ LDRGE r6, [r4], #4
+ LDRGE r8, [r5], #4
+ ,: Stall
+ SMLABBGE r14, r6, r8, r14 ,: sum = MAC16_16(sum, x_0, y_0)
+ SUBGE r12, r12, #2
+ SMLATTGE r14, r6, r8, r14 ,: sum = MAC16_16(sum, x_1, y_1)
+ ADDS r12, r12, #1
+ LDRHGE r6, [r4], #2
+ LDRHGE r8, [r5], #2
+ ,: Stall
+ SMLABBGE r14, r6, r8, r14 ,: sum = MAC16_16(sum, *x, *y)
+ ,: maxcorr = max(maxcorr, sum)
+ CMP r0, r14
+ ,: xcorr[i] = sum
+ STR r14, [r2], #4
+ MOVLT r0, r14
+celt_pitch_xcorr_edsp_done::
+ LDMFD sp!, {r4-r11, pc}
+ .size celt_pitch_xcorr_edsp, .-celt_pitch_xcorr_edsp ,: @ ENDP
+
+ .endif
+
+,: @ END:
+ .section .note.GNU-stack,"",%progbits
diff --git a/libopus/celt/arm/celt_pitch_xcorr_arm_gnu.s b/libopus/celt/arm/celt_pitch_xcorr_arm_gnu.s
new file mode 100644
index 0000000..4be1705
--- /dev/null
+++ b/libopus/celt/arm/celt_pitch_xcorr_arm_gnu.s
@@ -0,0 +1,551 @@
+ .syntax unified
+@ Copyright (c) 2007-2008 CSIRO
+@ Copyright (c) 2007-2009 Xiph.Org Foundation
+@ Copyright (c) 2013 Parrot
+@ Written by Aurélien Zanelli
+@
+@ Redistribution and use in source and binary forms, with or without
+@ modification, are permitted provided that the following conditions
+@ are met:
+@
+@ - Redistributions of source code must retain the above copyright
+@ notice, this list of conditions and the following disclaimer.
+@
+@ - Redistributions in binary form must reproduce the above copyright
+@ notice, this list of conditions and the following disclaimer in the
+@ documentation and/or other materials provided with the distribution.
+@
+@ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+@ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+@ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+@ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+@ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+@ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+@ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+@ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+@ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+@ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ .text; .p2align 2; .arch armv7-a
+ .fpu neon
+ .object_arch armv4t
+
+ .include "celt/arm/armopts_gnu.s"
+
+ .if OPUS_ARM_MAY_HAVE_EDSP
+ .global celt_pitch_xcorr_edsp
+ .endif
+
+ .if OPUS_ARM_MAY_HAVE_NEON
+ .global celt_pitch_xcorr_neon
+ .endif
+
+ .if OPUS_ARM_MAY_HAVE_NEON
+
+@ Compute sum[k]=sum(x[j]*y[j+k],j=0...len-1), k=0...3
+; xcorr_kernel_neon: @ PROC
+xcorr_kernel_neon_start:
+ @ input:
+ @ r3 = int len
+ @ r4 = opus_val16 *x
+ @ r5 = opus_val16 *y
+ @ q0 = opus_val32 sum[4]
+ @ output:
+ @ q0 = opus_val32 sum[4]
+ @ preserved: r0-r3, r6-r11, d2, q4-q7, q9-q15
+ @ internal usage:
+ @ r12 = int j
+ @ d3 = y_3|y_2|y_1|y_0
+ @ q2 = y_B|y_A|y_9|y_8|y_7|y_6|y_5|y_4
+ @ q3 = x_7|x_6|x_5|x_4|x_3|x_2|x_1|x_0
+ @ q8 = scratch
+ @
+ @ Load y[0...3]
+ @ This requires len>0 to always be valid (which we assert in the C code).
+ VLD1.16 {d5}, [r5]!
+ SUBS r12, r3, #8
+ BLE xcorr_kernel_neon_process4
+@ Process 8 samples at a time.
+@ This loop loads one y value more than we actually need. Therefore we have to
+@ stop as soon as there are 8 or fewer samples left (instead of 7), to avoid
+@ reading past the end of the array.
+xcorr_kernel_neon_process8:
+ @ This loop has 19 total instructions (10 cycles to issue, minimum), with
+ @ - 2 cycles of ARM insrtuctions,
+ @ - 10 cycles of load/store/byte permute instructions, and
+ @ - 9 cycles of data processing instructions.
+ @ On a Cortex A8, we dual-issue the maximum amount (9 cycles) between the
+ @ latter two categories, meaning the whole loop should run in 10 cycles per
+ @ iteration, barring cache misses.
+ @
+ @ Load x[0...7]
+ VLD1.16 {d6, d7}, [r4]!
+ @ Unlike VMOV, VAND is a data processsing instruction (and doesn't get
+ @ assembled to VMOV, like VORR would), so it dual-issues with the prior VLD1.
+ VAND d3, d5, d5
+ SUBS r12, r12, #8
+ @ Load y[4...11]
+ VLD1.16 {d4, d5}, [r5]!
+ VMLAL.S16 q0, d3, d6[0]
+ VEXT.16 d16, d3, d4, #1
+ VMLAL.S16 q0, d4, d7[0]
+ VEXT.16 d17, d4, d5, #1
+ VMLAL.S16 q0, d16, d6[1]
+ VEXT.16 d16, d3, d4, #2
+ VMLAL.S16 q0, d17, d7[1]
+ VEXT.16 d17, d4, d5, #2
+ VMLAL.S16 q0, d16, d6[2]
+ VEXT.16 d16, d3, d4, #3
+ VMLAL.S16 q0, d17, d7[2]
+ VEXT.16 d17, d4, d5, #3
+ VMLAL.S16 q0, d16, d6[3]
+ VMLAL.S16 q0, d17, d7[3]
+ BGT xcorr_kernel_neon_process8
+@ Process 4 samples here if we have > 4 left (still reading one extra y value).
+xcorr_kernel_neon_process4:
+ ADDS r12, r12, #4
+ BLE xcorr_kernel_neon_process2
+ @ Load x[0...3]
+ VLD1.16 d6, [r4]!
+ @ Use VAND since it's a data processing instruction again.
+ VAND d4, d5, d5
+ SUB r12, r12, #4
+ @ Load y[4...7]
+ VLD1.16 d5, [r5]!
+ VMLAL.S16 q0, d4, d6[0]
+ VEXT.16 d16, d4, d5, #1
+ VMLAL.S16 q0, d16, d6[1]
+ VEXT.16 d16, d4, d5, #2
+ VMLAL.S16 q0, d16, d6[2]
+ VEXT.16 d16, d4, d5, #3
+ VMLAL.S16 q0, d16, d6[3]
+@ Process 2 samples here if we have > 2 left (still reading one extra y value).
+xcorr_kernel_neon_process2:
+ ADDS r12, r12, #2
+ BLE xcorr_kernel_neon_process1
+ @ Load x[0...1]
+ VLD2.16 {d6[],d7[]}, [r4]!
+ @ Use VAND since it's a data processing instruction again.
+ VAND d4, d5, d5
+ SUB r12, r12, #2
+ @ Load y[4...5]
+ VLD1.32 {d5[]}, [r5]!
+ VMLAL.S16 q0, d4, d6
+ VEXT.16 d16, d4, d5, #1
+ @ Replace bottom copy of {y5,y4} in d5 with {y3,y2} from d4, using VSRI
+ @ instead of VEXT, since it's a data-processing instruction.
+ VSRI.64 d5, d4, #32
+ VMLAL.S16 q0, d16, d7
+@ Process 1 sample using the extra y value we loaded above.
+xcorr_kernel_neon_process1:
+ @ Load next *x
+ VLD1.16 {d6[]}, [r4]!
+ ADDS r12, r12, #1
+ @ y[0...3] are left in d5 from prior iteration(s) (if any)
+ VMLAL.S16 q0, d5, d6
+ MOVLE pc, lr
+@ Now process 1 last sample, not reading ahead.
+ @ Load last *y
+ VLD1.16 {d4[]}, [r5]!
+ VSRI.64 d4, d5, #16
+ @ Load last *x
+ VLD1.16 {d6[]}, [r4]!
+ VMLAL.S16 q0, d4, d6
+ MOV pc, lr
+ .size xcorr_kernel_neon, .-xcorr_kernel_neon @ ENDP
+
+@ opus_val32 celt_pitch_xcorr_neon(opus_val16 *_x, opus_val16 *_y,
+@ opus_val32 *xcorr, int len, int max_pitch)
+; celt_pitch_xcorr_neon: @ PROC
+ @ input:
+ @ r0 = opus_val16 *_x
+ @ r1 = opus_val16 *_y
+ @ r2 = opus_val32 *xcorr
+ @ r3 = int len
+ @ output:
+ @ r0 = int maxcorr
+ @ internal usage:
+ @ r4 = opus_val16 *x (for xcorr_kernel_neon())
+ @ r5 = opus_val16 *y (for xcorr_kernel_neon())
+ @ r6 = int max_pitch
+ @ r12 = int j
+ @ q15 = int maxcorr[4] (q15 is not used by xcorr_kernel_neon())
+ STMFD sp!, {r4-r6, lr}
+ LDR r6, [sp, #16]
+ VMOV.S32 q15, #1
+ @ if (max_pitch < 4) goto celt_pitch_xcorr_neon_process4_done
+ SUBS r6, r6, #4
+ BLT celt_pitch_xcorr_neon_process4_done
+celt_pitch_xcorr_neon_process4:
+ @ xcorr_kernel_neon parameters:
+ @ r3 = len, r4 = _x, r5 = _y, q0 = {0, 0, 0, 0}
+ MOV r4, r0
+ MOV r5, r1
+ VEOR q0, q0, q0
+ @ xcorr_kernel_neon only modifies r4, r5, r12, and q0...q3.
+ @ So we don't save/restore any other registers.
+ BL xcorr_kernel_neon_start
+ SUBS r6, r6, #4
+ VST1.32 {q0}, [r2]!
+ @ _y += 4
+ ADD r1, r1, #8
+ VMAX.S32 q15, q15, q0
+ @ if (max_pitch < 4) goto celt_pitch_xcorr_neon_process4_done
+ BGE celt_pitch_xcorr_neon_process4
+@ We have less than 4 sums left to compute.
+celt_pitch_xcorr_neon_process4_done:
+ ADDS r6, r6, #4
+ @ Reduce maxcorr to a single value
+ VMAX.S32 d30, d30, d31
+ VPMAX.S32 d30, d30, d30
+ @ if (max_pitch <= 0) goto celt_pitch_xcorr_neon_done
+ BLE celt_pitch_xcorr_neon_done
+@ Now compute each remaining sum one at a time.
+celt_pitch_xcorr_neon_process_remaining:
+ MOV r4, r0
+ MOV r5, r1
+ VMOV.I32 q0, #0
+ SUBS r12, r3, #8
+ BLT celt_pitch_xcorr_neon_process_remaining4
+@ Sum terms 8 at a time.
+celt_pitch_xcorr_neon_process_remaining_loop8:
+ @ Load x[0...7]
+ VLD1.16 {q1}, [r4]!
+ @ Load y[0...7]
+ VLD1.16 {q2}, [r5]!
+ SUBS r12, r12, #8
+ VMLAL.S16 q0, d4, d2
+ VMLAL.S16 q0, d5, d3
+ BGE celt_pitch_xcorr_neon_process_remaining_loop8
+@ Sum terms 4 at a time.
+celt_pitch_xcorr_neon_process_remaining4:
+ ADDS r12, r12, #4
+ BLT celt_pitch_xcorr_neon_process_remaining4_done
+ @ Load x[0...3]
+ VLD1.16 {d2}, [r4]!
+ @ Load y[0...3]
+ VLD1.16 {d3}, [r5]!
+ SUB r12, r12, #4
+ VMLAL.S16 q0, d3, d2
+celt_pitch_xcorr_neon_process_remaining4_done:
+ @ Reduce the sum to a single value.
+ VADD.S32 d0, d0, d1
+ VPADDL.S32 d0, d0
+ ADDS r12, r12, #4
+ BLE celt_pitch_xcorr_neon_process_remaining_loop_done
+@ Sum terms 1 at a time.
+celt_pitch_xcorr_neon_process_remaining_loop1:
+ VLD1.16 {d2[]}, [r4]!
+ VLD1.16 {d3[]}, [r5]!
+ SUBS r12, r12, #1
+ VMLAL.S16 q0, d2, d3
+ BGT celt_pitch_xcorr_neon_process_remaining_loop1
+celt_pitch_xcorr_neon_process_remaining_loop_done:
+ VST1.32 {d0[0]}, [r2]!
+ VMAX.S32 d30, d30, d0
+ SUBS r6, r6, #1
+ @ _y++
+ ADD r1, r1, #2
+ @ if (--max_pitch > 0) goto celt_pitch_xcorr_neon_process_remaining
+ BGT celt_pitch_xcorr_neon_process_remaining
+celt_pitch_xcorr_neon_done:
+ VMOV.32 r0, d30[0]
+ LDMFD sp!, {r4-r6, pc}
+ .size celt_pitch_xcorr_neon, .-celt_pitch_xcorr_neon @ ENDP
+
+ .endif
+
+ .if OPUS_ARM_MAY_HAVE_EDSP
+
+@ This will get used on ARMv7 devices without NEON, so it has been optimized
+@ to take advantage of dual-issuing where possible.
+; xcorr_kernel_edsp: @ PROC
+xcorr_kernel_edsp_start:
+ @ input:
+ @ r3 = int len
+ @ r4 = opus_val16 *_x (must be 32-bit aligned)
+ @ r5 = opus_val16 *_y (must be 32-bit aligned)
+ @ r6...r9 = opus_val32 sum[4]
+ @ output:
+ @ r6...r9 = opus_val32 sum[4]
+ @ preserved: r0-r5
+ @ internal usage
+ @ r2 = int j
+ @ r12,r14 = opus_val16 x[4]
+ @ r10,r11 = opus_val16 y[4]
+ STMFD sp!, {r2,r4,r5,lr}
+ LDR r10, [r5], #4 @ Load y[0...1]
+ SUBS r2, r3, #4 @ j = len-4
+ LDR r11, [r5], #4 @ Load y[2...3]
+ BLE xcorr_kernel_edsp_process4_done
+ LDR r12, [r4], #4 @ Load x[0...1]
+ @ Stall
+xcorr_kernel_edsp_process4:
+ @ The multiplies must issue from pipeline 0, and can't dual-issue with each
+ @ other. Every other instruction here dual-issues with a multiply, and is
+ @ thus "free". There should be no stalls in the body of the loop.
+ SMLABB r6, r12, r10, r6 @ sum[0] = MAC16_16(sum[0],x_0,y_0)
+ LDR r14, [r4], #4 @ Load x[2...3]
+ SMLABT r7, r12, r10, r7 @ sum[1] = MAC16_16(sum[1],x_0,y_1)
+ SUBS r2, r2, #4 @ j-=4
+ SMLABB r8, r12, r11, r8 @ sum[2] = MAC16_16(sum[2],x_0,y_2)
+ SMLABT r9, r12, r11, r9 @ sum[3] = MAC16_16(sum[3],x_0,y_3)
+ SMLATT r6, r12, r10, r6 @ sum[0] = MAC16_16(sum[0],x_1,y_1)
+ LDR r10, [r5], #4 @ Load y[4...5]
+ SMLATB r7, r12, r11, r7 @ sum[1] = MAC16_16(sum[1],x_1,y_2)
+ SMLATT r8, r12, r11, r8 @ sum[2] = MAC16_16(sum[2],x_1,y_3)
+ SMLATB r9, r12, r10, r9 @ sum[3] = MAC16_16(sum[3],x_1,y_4)
+ LDRGT r12, [r4], #4 @ Load x[0...1]
+ SMLABB r6, r14, r11, r6 @ sum[0] = MAC16_16(sum[0],x_2,y_2)
+ SMLABT r7, r14, r11, r7 @ sum[1] = MAC16_16(sum[1],x_2,y_3)
+ SMLABB r8, r14, r10, r8 @ sum[2] = MAC16_16(sum[2],x_2,y_4)
+ SMLABT r9, r14, r10, r9 @ sum[3] = MAC16_16(sum[3],x_2,y_5)
+ SMLATT r6, r14, r11, r6 @ sum[0] = MAC16_16(sum[0],x_3,y_3)
+ LDR r11, [r5], #4 @ Load y[6...7]
+ SMLATB r7, r14, r10, r7 @ sum[1] = MAC16_16(sum[1],x_3,y_4)
+ SMLATT r8, r14, r10, r8 @ sum[2] = MAC16_16(sum[2],x_3,y_5)
+ SMLATB r9, r14, r11, r9 @ sum[3] = MAC16_16(sum[3],x_3,y_6)
+ BGT xcorr_kernel_edsp_process4
+xcorr_kernel_edsp_process4_done:
+ ADDS r2, r2, #4
+ BLE xcorr_kernel_edsp_done
+ LDRH r12, [r4], #2 @ r12 = *x++
+ SUBS r2, r2, #1 @ j--
+ @ Stall
+ SMLABB r6, r12, r10, r6 @ sum[0] = MAC16_16(sum[0],x,y_0)
+ LDRHGT r14, [r4], #2 @ r14 = *x++
+ SMLABT r7, r12, r10, r7 @ sum[1] = MAC16_16(sum[1],x,y_1)
+ SMLABB r8, r12, r11, r8 @ sum[2] = MAC16_16(sum[2],x,y_2)
+ SMLABT r9, r12, r11, r9 @ sum[3] = MAC16_16(sum[3],x,y_3)
+ BLE xcorr_kernel_edsp_done
+ SMLABT r6, r14, r10, r6 @ sum[0] = MAC16_16(sum[0],x,y_1)
+ SUBS r2, r2, #1 @ j--
+ SMLABB r7, r14, r11, r7 @ sum[1] = MAC16_16(sum[1],x,y_2)
+ LDRH r10, [r5], #2 @ r10 = y_4 = *y++
+ SMLABT r8, r14, r11, r8 @ sum[2] = MAC16_16(sum[2],x,y_3)
+ LDRHGT r12, [r4], #2 @ r12 = *x++
+ SMLABB r9, r14, r10, r9 @ sum[3] = MAC16_16(sum[3],x,y_4)
+ BLE xcorr_kernel_edsp_done
+ SMLABB r6, r12, r11, r6 @ sum[0] = MAC16_16(sum[0],tmp,y_2)
+ CMP r2, #1 @ j--
+ SMLABT r7, r12, r11, r7 @ sum[1] = MAC16_16(sum[1],tmp,y_3)
+ LDRH r2, [r5], #2 @ r2 = y_5 = *y++
+ SMLABB r8, r12, r10, r8 @ sum[2] = MAC16_16(sum[2],tmp,y_4)
+ LDRHGT r14, [r4] @ r14 = *x
+ SMLABB r9, r12, r2, r9 @ sum[3] = MAC16_16(sum[3],tmp,y_5)
+ BLE xcorr_kernel_edsp_done
+ SMLABT r6, r14, r11, r6 @ sum[0] = MAC16_16(sum[0],tmp,y_3)
+ LDRH r11, [r5] @ r11 = y_6 = *y
+ SMLABB r7, r14, r10, r7 @ sum[1] = MAC16_16(sum[1],tmp,y_4)
+ SMLABB r8, r14, r2, r8 @ sum[2] = MAC16_16(sum[2],tmp,y_5)
+ SMLABB r9, r14, r11, r9 @ sum[3] = MAC16_16(sum[3],tmp,y_6)
+xcorr_kernel_edsp_done:
+ LDMFD sp!, {r2,r4,r5,pc}
+ .size xcorr_kernel_edsp, .-xcorr_kernel_edsp @ ENDP
+
+; celt_pitch_xcorr_edsp: @ PROC
+ @ input:
+ @ r0 = opus_val16 *_x (must be 32-bit aligned)
+ @ r1 = opus_val16 *_y (only needs to be 16-bit aligned)
+ @ r2 = opus_val32 *xcorr
+ @ r3 = int len
+ @ output:
+ @ r0 = maxcorr
+ @ internal usage
+ @ r4 = opus_val16 *x
+ @ r5 = opus_val16 *y
+ @ r6 = opus_val32 sum0
+ @ r7 = opus_val32 sum1
+ @ r8 = opus_val32 sum2
+ @ r9 = opus_val32 sum3
+ @ r1 = int max_pitch
+ @ r12 = int j
+ STMFD sp!, {r4-r11, lr}
+ MOV r5, r1
+ LDR r1, [sp, #36]
+ MOV r4, r0
+ TST r5, #3
+ @ maxcorr = 1
+ MOV r0, #1
+ BEQ celt_pitch_xcorr_edsp_process1u_done
+@ Compute one sum at the start to make y 32-bit aligned.
+ SUBS r12, r3, #4
+ @ r14 = sum = 0
+ MOV r14, #0
+ LDRH r8, [r5], #2
+ BLE celt_pitch_xcorr_edsp_process1u_loop4_done
+ LDR r6, [r4], #4
+ MOV r8, r8, LSL #16
+celt_pitch_xcorr_edsp_process1u_loop4:
+ LDR r9, [r5], #4
+ SMLABT r14, r6, r8, r14 @ sum = MAC16_16(sum, x_0, y_0)
+ LDR r7, [r4], #4
+ SMLATB r14, r6, r9, r14 @ sum = MAC16_16(sum, x_1, y_1)
+ LDR r8, [r5], #4
+ SMLABT r14, r7, r9, r14 @ sum = MAC16_16(sum, x_2, y_2)
+ SUBS r12, r12, #4 @ j-=4
+ SMLATB r14, r7, r8, r14 @ sum = MAC16_16(sum, x_3, y_3)
+ LDRGT r6, [r4], #4
+ BGT celt_pitch_xcorr_edsp_process1u_loop4
+ MOV r8, r8, LSR #16
+celt_pitch_xcorr_edsp_process1u_loop4_done:
+ ADDS r12, r12, #4
+celt_pitch_xcorr_edsp_process1u_loop1:
+ LDRHGE r6, [r4], #2
+ @ Stall
+ SMLABBGE r14, r6, r8, r14 @ sum = MAC16_16(sum, *x, *y)
+ SUBSGE r12, r12, #1
+ LDRHGT r8, [r5], #2
+ BGT celt_pitch_xcorr_edsp_process1u_loop1
+ @ Restore _x
+ SUB r4, r4, r3, LSL #1
+ @ Restore and advance _y
+ SUB r5, r5, r3, LSL #1
+ @ maxcorr = max(maxcorr, sum)
+ CMP r0, r14
+ ADD r5, r5, #2
+ MOVLT r0, r14
+ SUBS r1, r1, #1
+ @ xcorr[i] = sum
+ STR r14, [r2], #4
+ BLE celt_pitch_xcorr_edsp_done
+celt_pitch_xcorr_edsp_process1u_done:
+ @ if (max_pitch < 4) goto celt_pitch_xcorr_edsp_process2
+ SUBS r1, r1, #4
+ BLT celt_pitch_xcorr_edsp_process2
+celt_pitch_xcorr_edsp_process4:
+ @ xcorr_kernel_edsp parameters:
+ @ r3 = len, r4 = _x, r5 = _y, r6...r9 = sum[4] = {0, 0, 0, 0}
+ MOV r6, #0
+ MOV r7, #0
+ MOV r8, #0
+ MOV r9, #0
+ BL xcorr_kernel_edsp_start @ xcorr_kernel_edsp(_x, _y+i, xcorr+i, len)
+ @ maxcorr = max(maxcorr, sum0, sum1, sum2, sum3)
+ CMP r0, r6
+ @ _y+=4
+ ADD r5, r5, #8
+ MOVLT r0, r6
+ CMP r0, r7
+ MOVLT r0, r7
+ CMP r0, r8
+ MOVLT r0, r8
+ CMP r0, r9
+ MOVLT r0, r9
+ STMIA r2!, {r6-r9}
+ SUBS r1, r1, #4
+ BGE celt_pitch_xcorr_edsp_process4
+celt_pitch_xcorr_edsp_process2:
+ ADDS r1, r1, #2
+ BLT celt_pitch_xcorr_edsp_process1a
+ SUBS r12, r3, #4
+ @ {r10, r11} = {sum0, sum1} = {0, 0}
+ MOV r10, #0
+ MOV r11, #0
+ LDR r8, [r5], #4
+ BLE celt_pitch_xcorr_edsp_process2_loop_done
+ LDR r6, [r4], #4
+ LDR r9, [r5], #4
+celt_pitch_xcorr_edsp_process2_loop4:
+ SMLABB r10, r6, r8, r10 @ sum0 = MAC16_16(sum0, x_0, y_0)
+ LDR r7, [r4], #4
+ SMLABT r11, r6, r8, r11 @ sum1 = MAC16_16(sum1, x_0, y_1)
+ SUBS r12, r12, #4 @ j-=4
+ SMLATT r10, r6, r8, r10 @ sum0 = MAC16_16(sum0, x_1, y_1)
+ LDR r8, [r5], #4
+ SMLATB r11, r6, r9, r11 @ sum1 = MAC16_16(sum1, x_1, y_2)
+ LDRGT r6, [r4], #4
+ SMLABB r10, r7, r9, r10 @ sum0 = MAC16_16(sum0, x_2, y_2)
+ SMLABT r11, r7, r9, r11 @ sum1 = MAC16_16(sum1, x_2, y_3)
+ SMLATT r10, r7, r9, r10 @ sum0 = MAC16_16(sum0, x_3, y_3)
+ LDRGT r9, [r5], #4
+ SMLATB r11, r7, r8, r11 @ sum1 = MAC16_16(sum1, x_3, y_4)
+ BGT celt_pitch_xcorr_edsp_process2_loop4
+celt_pitch_xcorr_edsp_process2_loop_done:
+ ADDS r12, r12, #2
+ BLE celt_pitch_xcorr_edsp_process2_1
+ LDR r6, [r4], #4
+ @ Stall
+ SMLABB r10, r6, r8, r10 @ sum0 = MAC16_16(sum0, x_0, y_0)
+ LDR r9, [r5], #4
+ SMLABT r11, r6, r8, r11 @ sum1 = MAC16_16(sum1, x_0, y_1)
+ SUB r12, r12, #2
+ SMLATT r10, r6, r8, r10 @ sum0 = MAC16_16(sum0, x_1, y_1)
+ MOV r8, r9
+ SMLATB r11, r6, r9, r11 @ sum1 = MAC16_16(sum1, x_1, y_2)
+celt_pitch_xcorr_edsp_process2_1:
+ LDRH r6, [r4], #2
+ ADDS r12, r12, #1
+ @ Stall
+ SMLABB r10, r6, r8, r10 @ sum0 = MAC16_16(sum0, x_0, y_0)
+ LDRHGT r7, [r4], #2
+ SMLABT r11, r6, r8, r11 @ sum1 = MAC16_16(sum1, x_0, y_1)
+ BLE celt_pitch_xcorr_edsp_process2_done
+ LDRH r9, [r5], #2
+ SMLABT r10, r7, r8, r10 @ sum0 = MAC16_16(sum0, x_0, y_1)
+ SMLABB r11, r7, r9, r11 @ sum1 = MAC16_16(sum1, x_0, y_2)
+celt_pitch_xcorr_edsp_process2_done:
+ @ Restore _x
+ SUB r4, r4, r3, LSL #1
+ @ Restore and advance _y
+ SUB r5, r5, r3, LSL #1
+ @ maxcorr = max(maxcorr, sum0)
+ CMP r0, r10
+ ADD r5, r5, #2
+ MOVLT r0, r10
+ SUB r1, r1, #2
+ @ maxcorr = max(maxcorr, sum1)
+ CMP r0, r11
+ @ xcorr[i] = sum
+ STR r10, [r2], #4
+ MOVLT r0, r11
+ STR r11, [r2], #4
+celt_pitch_xcorr_edsp_process1a:
+ ADDS r1, r1, #1
+ BLT celt_pitch_xcorr_edsp_done
+ SUBS r12, r3, #4
+ @ r14 = sum = 0
+ MOV r14, #0
+ BLT celt_pitch_xcorr_edsp_process1a_loop_done
+ LDR r6, [r4], #4
+ LDR r8, [r5], #4
+ LDR r7, [r4], #4
+ LDR r9, [r5], #4
+celt_pitch_xcorr_edsp_process1a_loop4:
+ SMLABB r14, r6, r8, r14 @ sum = MAC16_16(sum, x_0, y_0)
+ SUBS r12, r12, #4 @ j-=4
+ SMLATT r14, r6, r8, r14 @ sum = MAC16_16(sum, x_1, y_1)
+ LDRGE r6, [r4], #4
+ SMLABB r14, r7, r9, r14 @ sum = MAC16_16(sum, x_2, y_2)
+ LDRGE r8, [r5], #4
+ SMLATT r14, r7, r9, r14 @ sum = MAC16_16(sum, x_3, y_3)
+ LDRGE r7, [r4], #4
+ LDRGE r9, [r5], #4
+ BGE celt_pitch_xcorr_edsp_process1a_loop4
+celt_pitch_xcorr_edsp_process1a_loop_done:
+ ADDS r12, r12, #2
+ LDRGE r6, [r4], #4
+ LDRGE r8, [r5], #4
+ @ Stall
+ SMLABBGE r14, r6, r8, r14 @ sum = MAC16_16(sum, x_0, y_0)
+ SUBGE r12, r12, #2
+ SMLATTGE r14, r6, r8, r14 @ sum = MAC16_16(sum, x_1, y_1)
+ ADDS r12, r12, #1
+ LDRHGE r6, [r4], #2
+ LDRHGE r8, [r5], #2
+ @ Stall
+ SMLABBGE r14, r6, r8, r14 @ sum = MAC16_16(sum, *x, *y)
+ @ maxcorr = max(maxcorr, sum)
+ CMP r0, r14
+ @ xcorr[i] = sum
+ STR r14, [r2], #4
+ MOVLT r0, r14
+celt_pitch_xcorr_edsp_done:
+ LDMFD sp!, {r4-r11, pc}
+ .size celt_pitch_xcorr_edsp, .-celt_pitch_xcorr_edsp @ ENDP
+
+ .endif
+
+@ END:
+ .section .note.GNU-stack,"",%progbits
diff --git a/libopus/celt/arm/fft_arm.h b/libopus/celt/arm/fft_arm.h
new file mode 100644
index 0000000..0cb55d8
--- /dev/null
+++ b/libopus/celt/arm/fft_arm.h
@@ -0,0 +1,72 @@
+/* Copyright (c) 2015 Xiph.Org Foundation
+ Written by Viswanath Puttagunta */
+/**
+ @file fft_arm.h
+ @brief ARM Neon Intrinsic optimizations for fft using NE10 library
+ */
+
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#if !defined(FFT_ARM_H)
+#define FFT_ARM_H
+
+#include "config.h"
+#include "kiss_fft.h"
+
+#if defined(HAVE_ARM_NE10)
+
+int opus_fft_alloc_arm_neon(kiss_fft_state *st);
+void opus_fft_free_arm_neon(kiss_fft_state *st);
+
+void opus_fft_neon(const kiss_fft_state *st,
+ const kiss_fft_cpx *fin,
+ kiss_fft_cpx *fout);
+
+void opus_ifft_neon(const kiss_fft_state *st,
+ const kiss_fft_cpx *fin,
+ kiss_fft_cpx *fout);
+
+#if !defined(OPUS_HAVE_RTCD)
+#define OVERRIDE_OPUS_FFT (1)
+
+#define opus_fft_alloc_arch(_st, arch) \
+ ((void)(arch), opus_fft_alloc_arm_neon(_st))
+
+#define opus_fft_free_arch(_st, arch) \
+ ((void)(arch), opus_fft_free_arm_neon(_st))
+
+#define opus_fft(_st, _fin, _fout, arch) \
+ ((void)(arch), opus_fft_neon(_st, _fin, _fout))
+
+#define opus_ifft(_st, _fin, _fout, arch) \
+ ((void)(arch), opus_ifft_neon(_st, _fin, _fout))
+
+#endif /* OPUS_HAVE_RTCD */
+
+#endif /* HAVE_ARM_NE10 */
+
+#endif
diff --git a/libopus/celt/arm/fixed_arm64.h b/libopus/celt/arm/fixed_arm64.h
new file mode 100644
index 0000000..c6fbd3d
--- /dev/null
+++ b/libopus/celt/arm/fixed_arm64.h
@@ -0,0 +1,35 @@
+/* Copyright (C) 2015 Vidyo */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef FIXED_ARM64_H
+#define FIXED_ARM64_H
+
+#include <arm_neon.h>
+
+#undef SIG2WORD16
+#define SIG2WORD16(x) (vqmovns_s32(PSHR32((x), SIG_SHIFT)))
+
+#endif
diff --git a/libopus/celt/arm/fixed_armv4.h b/libopus/celt/arm/fixed_armv4.h
new file mode 100644
index 0000000..efb3b18
--- /dev/null
+++ b/libopus/celt/arm/fixed_armv4.h
@@ -0,0 +1,80 @@
+/* Copyright (C) 2013 Xiph.Org Foundation and contributors */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef FIXED_ARMv4_H
+#define FIXED_ARMv4_H
+
+/** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
+#undef MULT16_32_Q16
+static OPUS_INLINE opus_val32 MULT16_32_Q16_armv4(opus_val16 a, opus_val32 b)
+{
+ unsigned rd_lo;
+ int rd_hi;
+ __asm__(
+ "#MULT16_32_Q16\n\t"
+ "smull %0, %1, %2, %3\n\t"
+ : "=&r"(rd_lo), "=&r"(rd_hi)
+ : "%r"(b),"r"(a<<16)
+ );
+ return rd_hi;
+}
+#define MULT16_32_Q16(a, b) (MULT16_32_Q16_armv4(a, b))
+
+
+/** 16x32 multiplication, followed by a 15-bit shift right. Results fits in 32 bits */
+#undef MULT16_32_Q15
+static OPUS_INLINE opus_val32 MULT16_32_Q15_armv4(opus_val16 a, opus_val32 b)
+{
+ unsigned rd_lo;
+ int rd_hi;
+ __asm__(
+ "#MULT16_32_Q15\n\t"
+ "smull %0, %1, %2, %3\n\t"
+ : "=&r"(rd_lo), "=&r"(rd_hi)
+ : "%r"(b), "r"(a<<16)
+ );
+ /*We intentionally don't OR in the high bit of rd_lo for speed.*/
+ return rd_hi<<1;
+}
+#define MULT16_32_Q15(a, b) (MULT16_32_Q15_armv4(a, b))
+
+
+/** 16x32 multiply, followed by a 15-bit shift right and 32-bit add.
+ b must fit in 31 bits.
+ Result fits in 32 bits. */
+#undef MAC16_32_Q15
+#define MAC16_32_Q15(c, a, b) ADD32(c, MULT16_32_Q15(a, b))
+
+/** 16x32 multiply, followed by a 16-bit shift right and 32-bit add.
+ Result fits in 32 bits. */
+#undef MAC16_32_Q16
+#define MAC16_32_Q16(c, a, b) ADD32(c, MULT16_32_Q16(a, b))
+
+/** 32x32 multiplication, followed by a 31-bit shift right. Results fits in 32 bits */
+#undef MULT32_32_Q31
+#define MULT32_32_Q31(a,b) (opus_val32)((((opus_int64)(a)) * ((opus_int64)(b)))>>31)
+
+#endif
diff --git a/libopus/celt/arm/fixed_armv5e.h b/libopus/celt/arm/fixed_armv5e.h
new file mode 100644
index 0000000..36a6321
--- /dev/null
+++ b/libopus/celt/arm/fixed_armv5e.h
@@ -0,0 +1,151 @@
+/* Copyright (C) 2007-2009 Xiph.Org Foundation
+ Copyright (C) 2003-2008 Jean-Marc Valin
+ Copyright (C) 2007-2008 CSIRO
+ Copyright (C) 2013 Parrot */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef FIXED_ARMv5E_H
+#define FIXED_ARMv5E_H
+
+#include "fixed_armv4.h"
+
+/** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
+#undef MULT16_32_Q16
+static OPUS_INLINE opus_val32 MULT16_32_Q16_armv5e(opus_val16 a, opus_val32 b)
+{
+ int res;
+ __asm__(
+ "#MULT16_32_Q16\n\t"
+ "smulwb %0, %1, %2\n\t"
+ : "=r"(res)
+ : "r"(b),"r"(a)
+ );
+ return res;
+}
+#define MULT16_32_Q16(a, b) (MULT16_32_Q16_armv5e(a, b))
+
+
+/** 16x32 multiplication, followed by a 15-bit shift right. Results fits in 32 bits */
+#undef MULT16_32_Q15
+static OPUS_INLINE opus_val32 MULT16_32_Q15_armv5e(opus_val16 a, opus_val32 b)
+{
+ int res;
+ __asm__(
+ "#MULT16_32_Q15\n\t"
+ "smulwb %0, %1, %2\n\t"
+ : "=r"(res)
+ : "r"(b), "r"(a)
+ );
+ return res<<1;
+}
+#define MULT16_32_Q15(a, b) (MULT16_32_Q15_armv5e(a, b))
+
+
+/** 16x32 multiply, followed by a 15-bit shift right and 32-bit add.
+ b must fit in 31 bits.
+ Result fits in 32 bits. */
+#undef MAC16_32_Q15
+static OPUS_INLINE opus_val32 MAC16_32_Q15_armv5e(opus_val32 c, opus_val16 a,
+ opus_val32 b)
+{
+ int res;
+ __asm__(
+ "#MAC16_32_Q15\n\t"
+ "smlawb %0, %1, %2, %3;\n"
+ : "=r"(res)
+ : "r"(b<<1), "r"(a), "r"(c)
+ );
+ return res;
+}
+#define MAC16_32_Q15(c, a, b) (MAC16_32_Q15_armv5e(c, a, b))
+
+/** 16x32 multiply, followed by a 16-bit shift right and 32-bit add.
+ Result fits in 32 bits. */
+#undef MAC16_32_Q16
+static OPUS_INLINE opus_val32 MAC16_32_Q16_armv5e(opus_val32 c, opus_val16 a,
+ opus_val32 b)
+{
+ int res;
+ __asm__(
+ "#MAC16_32_Q16\n\t"
+ "smlawb %0, %1, %2, %3;\n"
+ : "=r"(res)
+ : "r"(b), "r"(a), "r"(c)
+ );
+ return res;
+}
+#define MAC16_32_Q16(c, a, b) (MAC16_32_Q16_armv5e(c, a, b))
+
+/** 16x16 multiply-add where the result fits in 32 bits */
+#undef MAC16_16
+static OPUS_INLINE opus_val32 MAC16_16_armv5e(opus_val32 c, opus_val16 a,
+ opus_val16 b)
+{
+ int res;
+ __asm__(
+ "#MAC16_16\n\t"
+ "smlabb %0, %1, %2, %3;\n"
+ : "=r"(res)
+ : "r"(a), "r"(b), "r"(c)
+ );
+ return res;
+}
+#define MAC16_16(c, a, b) (MAC16_16_armv5e(c, a, b))
+
+/** 16x16 multiplication where the result fits in 32 bits */
+#undef MULT16_16
+static OPUS_INLINE opus_val32 MULT16_16_armv5e(opus_val16 a, opus_val16 b)
+{
+ int res;
+ __asm__(
+ "#MULT16_16\n\t"
+ "smulbb %0, %1, %2;\n"
+ : "=r"(res)
+ : "r"(a), "r"(b)
+ );
+ return res;
+}
+#define MULT16_16(a, b) (MULT16_16_armv5e(a, b))
+
+#ifdef OPUS_ARM_INLINE_MEDIA
+
+#undef SIG2WORD16
+static OPUS_INLINE opus_val16 SIG2WORD16_armv6(opus_val32 x)
+{
+ celt_sig res;
+ __asm__(
+ "#SIG2WORD16\n\t"
+ "ssat %0, #16, %1, ASR #12\n\t"
+ : "=r"(res)
+ : "r"(x+2048)
+ );
+ return EXTRACT16(res);
+}
+#define SIG2WORD16(x) (SIG2WORD16_armv6(x))
+
+#endif /* OPUS_ARM_INLINE_MEDIA */
+
+#endif
diff --git a/libopus/celt/arm/kiss_fft_armv4.h b/libopus/celt/arm/kiss_fft_armv4.h
new file mode 100644
index 0000000..e4faad6
--- /dev/null
+++ b/libopus/celt/arm/kiss_fft_armv4.h
@@ -0,0 +1,121 @@
+/*Copyright (c) 2013, Xiph.Org Foundation and contributors.
+
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.*/
+
+#ifndef KISS_FFT_ARMv4_H
+#define KISS_FFT_ARMv4_H
+
+#if !defined(KISS_FFT_GUTS_H)
+#error "This file should only be included from _kiss_fft_guts.h"
+#endif
+
+#ifdef FIXED_POINT
+
+#undef C_MUL
+#define C_MUL(m,a,b) \
+ do{ \
+ int br__; \
+ int bi__; \
+ int tt__; \
+ __asm__ __volatile__( \
+ "#C_MUL\n\t" \
+ "ldrsh %[br], [%[bp], #0]\n\t" \
+ "ldm %[ap], {r0,r1}\n\t" \
+ "ldrsh %[bi], [%[bp], #2]\n\t" \
+ "smull %[tt], %[mi], r1, %[br]\n\t" \
+ "smlal %[tt], %[mi], r0, %[bi]\n\t" \
+ "rsb %[bi], %[bi], #0\n\t" \
+ "smull %[br], %[mr], r0, %[br]\n\t" \
+ "mov %[tt], %[tt], lsr #15\n\t" \
+ "smlal %[br], %[mr], r1, %[bi]\n\t" \
+ "orr %[mi], %[tt], %[mi], lsl #17\n\t" \
+ "mov %[br], %[br], lsr #15\n\t" \
+ "orr %[mr], %[br], %[mr], lsl #17\n\t" \
+ : [mr]"=r"((m).r), [mi]"=r"((m).i), \
+ [br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \
+ : [ap]"r"(&(a)), [bp]"r"(&(b)) \
+ : "r0", "r1" \
+ ); \
+ } \
+ while(0)
+
+#undef C_MUL4
+#define C_MUL4(m,a,b) \
+ do{ \
+ int br__; \
+ int bi__; \
+ int tt__; \
+ __asm__ __volatile__( \
+ "#C_MUL4\n\t" \
+ "ldrsh %[br], [%[bp], #0]\n\t" \
+ "ldm %[ap], {r0,r1}\n\t" \
+ "ldrsh %[bi], [%[bp], #2]\n\t" \
+ "smull %[tt], %[mi], r1, %[br]\n\t" \
+ "smlal %[tt], %[mi], r0, %[bi]\n\t" \
+ "rsb %[bi], %[bi], #0\n\t" \
+ "smull %[br], %[mr], r0, %[br]\n\t" \
+ "mov %[tt], %[tt], lsr #17\n\t" \
+ "smlal %[br], %[mr], r1, %[bi]\n\t" \
+ "orr %[mi], %[tt], %[mi], lsl #15\n\t" \
+ "mov %[br], %[br], lsr #17\n\t" \
+ "orr %[mr], %[br], %[mr], lsl #15\n\t" \
+ : [mr]"=r"((m).r), [mi]"=r"((m).i), \
+ [br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \
+ : [ap]"r"(&(a)), [bp]"r"(&(b)) \
+ : "r0", "r1" \
+ ); \
+ } \
+ while(0)
+
+#undef C_MULC
+#define C_MULC(m,a,b) \
+ do{ \
+ int br__; \
+ int bi__; \
+ int tt__; \
+ __asm__ __volatile__( \
+ "#C_MULC\n\t" \
+ "ldrsh %[br], [%[bp], #0]\n\t" \
+ "ldm %[ap], {r0,r1}\n\t" \
+ "ldrsh %[bi], [%[bp], #2]\n\t" \
+ "smull %[tt], %[mr], r0, %[br]\n\t" \
+ "smlal %[tt], %[mr], r1, %[bi]\n\t" \
+ "rsb %[bi], %[bi], #0\n\t" \
+ "smull %[br], %[mi], r1, %[br]\n\t" \
+ "mov %[tt], %[tt], lsr #15\n\t" \
+ "smlal %[br], %[mi], r0, %[bi]\n\t" \
+ "orr %[mr], %[tt], %[mr], lsl #17\n\t" \
+ "mov %[br], %[br], lsr #15\n\t" \
+ "orr %[mi], %[br], %[mi], lsl #17\n\t" \
+ : [mr]"=r"((m).r), [mi]"=r"((m).i), \
+ [br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \
+ : [ap]"r"(&(a)), [bp]"r"(&(b)) \
+ : "r0", "r1" \
+ ); \
+ } \
+ while(0)
+
+#endif /* FIXED_POINT */
+
+#endif /* KISS_FFT_ARMv4_H */
diff --git a/libopus/celt/arm/kiss_fft_armv5e.h b/libopus/celt/arm/kiss_fft_armv5e.h
new file mode 100644
index 0000000..9eca183
--- /dev/null
+++ b/libopus/celt/arm/kiss_fft_armv5e.h
@@ -0,0 +1,118 @@
+/*Copyright (c) 2013, Xiph.Org Foundation and contributors.
+
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.*/
+
+#ifndef KISS_FFT_ARMv5E_H
+#define KISS_FFT_ARMv5E_H
+
+#if !defined(KISS_FFT_GUTS_H)
+#error "This file should only be included from _kiss_fft_guts.h"
+#endif
+
+#ifdef FIXED_POINT
+
+#if defined(__thumb__)||defined(__thumb2__)
+#define LDRD_CONS "Q"
+#else
+#define LDRD_CONS "Uq"
+#endif
+
+#undef C_MUL
+#define C_MUL(m,a,b) \
+ do{ \
+ int mr1__; \
+ int mr2__; \
+ int mi__; \
+ long long aval__; \
+ int bval__; \
+ __asm__( \
+ "#C_MUL\n\t" \
+ "ldrd %[aval], %H[aval], %[ap]\n\t" \
+ "ldr %[bval], %[bp]\n\t" \
+ "smulwb %[mi], %H[aval], %[bval]\n\t" \
+ "smulwb %[mr1], %[aval], %[bval]\n\t" \
+ "smulwt %[mr2], %H[aval], %[bval]\n\t" \
+ "smlawt %[mi], %[aval], %[bval], %[mi]\n\t" \
+ : [mr1]"=r"(mr1__), [mr2]"=r"(mr2__), [mi]"=r"(mi__), \
+ [aval]"=&r"(aval__), [bval]"=r"(bval__) \
+ : [ap]LDRD_CONS(a), [bp]"m"(b) \
+ ); \
+ (m).r = SHL32(SUB32(mr1__, mr2__), 1); \
+ (m).i = SHL32(mi__, 1); \
+ } \
+ while(0)
+
+#undef C_MUL4
+#define C_MUL4(m,a,b) \
+ do{ \
+ int mr1__; \
+ int mr2__; \
+ int mi__; \
+ long long aval__; \
+ int bval__; \
+ __asm__( \
+ "#C_MUL4\n\t" \
+ "ldrd %[aval], %H[aval], %[ap]\n\t" \
+ "ldr %[bval], %[bp]\n\t" \
+ "smulwb %[mi], %H[aval], %[bval]\n\t" \
+ "smulwb %[mr1], %[aval], %[bval]\n\t" \
+ "smulwt %[mr2], %H[aval], %[bval]\n\t" \
+ "smlawt %[mi], %[aval], %[bval], %[mi]\n\t" \
+ : [mr1]"=r"(mr1__), [mr2]"=r"(mr2__), [mi]"=r"(mi__), \
+ [aval]"=&r"(aval__), [bval]"=r"(bval__) \
+ : [ap]LDRD_CONS(a), [bp]"m"(b) \
+ ); \
+ (m).r = SHR32(SUB32(mr1__, mr2__), 1); \
+ (m).i = SHR32(mi__, 1); \
+ } \
+ while(0)
+
+#undef C_MULC
+#define C_MULC(m,a,b) \
+ do{ \
+ int mr__; \
+ int mi1__; \
+ int mi2__; \
+ long long aval__; \
+ int bval__; \
+ __asm__( \
+ "#C_MULC\n\t" \
+ "ldrd %[aval], %H[aval], %[ap]\n\t" \
+ "ldr %[bval], %[bp]\n\t" \
+ "smulwb %[mr], %[aval], %[bval]\n\t" \
+ "smulwb %[mi1], %H[aval], %[bval]\n\t" \
+ "smulwt %[mi2], %[aval], %[bval]\n\t" \
+ "smlawt %[mr], %H[aval], %[bval], %[mr]\n\t" \
+ : [mr]"=r"(mr__), [mi1]"=r"(mi1__), [mi2]"=r"(mi2__), \
+ [aval]"=&r"(aval__), [bval]"=r"(bval__) \
+ : [ap]LDRD_CONS(a), [bp]"m"(b) \
+ ); \
+ (m).r = SHL32(mr__, 1); \
+ (m).i = SHL32(SUB32(mi1__, mi2__), 1); \
+ } \
+ while(0)
+
+#endif /* FIXED_POINT */
+
+#endif /* KISS_FFT_GUTS_H */
diff --git a/libopus/celt/arm/mdct_arm.h b/libopus/celt/arm/mdct_arm.h
new file mode 100644
index 0000000..49cbb44
--- /dev/null
+++ b/libopus/celt/arm/mdct_arm.h
@@ -0,0 +1,60 @@
+/* Copyright (c) 2015 Xiph.Org Foundation
+ Written by Viswanath Puttagunta */
+/**
+ @file arm_mdct.h
+ @brief ARM Neon Intrinsic optimizations for mdct using NE10 library
+ */
+
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#if !defined(MDCT_ARM_H)
+#define MDCT_ARM_H
+
+#include "config.h"
+#include "mdct.h"
+
+#if defined(HAVE_ARM_NE10)
+/** Compute a forward MDCT and scale by 4/N, trashes the input array */
+void clt_mdct_forward_neon(const mdct_lookup *l, kiss_fft_scalar *in,
+ kiss_fft_scalar * OPUS_RESTRICT out,
+ const opus_val16 *window, int overlap,
+ int shift, int stride, int arch);
+
+void clt_mdct_backward_neon(const mdct_lookup *l, kiss_fft_scalar *in,
+ kiss_fft_scalar * OPUS_RESTRICT out,
+ const opus_val16 *window, int overlap,
+ int shift, int stride, int arch);
+
+#if !defined(OPUS_HAVE_RTCD)
+#define OVERRIDE_OPUS_MDCT (1)
+#define clt_mdct_forward(_l, _in, _out, _window, _int, _shift, _stride, _arch) \
+ clt_mdct_forward_neon(_l, _in, _out, _window, _int, _shift, _stride, _arch)
+#define clt_mdct_backward(_l, _in, _out, _window, _int, _shift, _stride, _arch) \
+ clt_mdct_backward_neon(_l, _in, _out, _window, _int, _shift, _stride, _arch)
+#endif /* OPUS_HAVE_RTCD */
+#endif /* HAVE_ARM_NE10 */
+
+#endif
diff --git a/libopus/celt/arm/pitch_arm.h b/libopus/celt/arm/pitch_arm.h
new file mode 100644
index 0000000..1433116
--- /dev/null
+++ b/libopus/celt/arm/pitch_arm.h
@@ -0,0 +1,126 @@
+/* Copyright (c) 2010 Xiph.Org Foundation
+ * Copyright (c) 2013 Parrot */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#if !defined(PITCH_ARM_H)
+# define PITCH_ARM_H
+
+# include "armcpu.h"
+
+# if defined(FIXED_POINT)
+
+# if defined(OPUS_ARM_MAY_HAVE_NEON)
+opus_val32 celt_pitch_xcorr_neon(const opus_val16 *_x, const opus_val16 *_y,
+ opus_val32 *xcorr, int len, int max_pitch);
+# endif
+
+# if defined(OPUS_ARM_MAY_HAVE_MEDIA)
+# define celt_pitch_xcorr_media MAY_HAVE_EDSP(celt_pitch_xcorr)
+# endif
+
+# if defined(OPUS_ARM_MAY_HAVE_EDSP)
+opus_val32 celt_pitch_xcorr_edsp(const opus_val16 *_x, const opus_val16 *_y,
+ opus_val32 *xcorr, int len, int max_pitch);
+# endif
+
+# if defined(OPUS_HAVE_RTCD) && \
+ ((defined(OPUS_ARM_MAY_HAVE_NEON) && !defined(OPUS_ARM_PRESUME_NEON)) || \
+ (defined(OPUS_ARM_MAY_HAVE_MEDIA) && !defined(OPUS_ARM_PRESUME_MEDIA)) || \
+ (defined(OPUS_ARM_MAY_HAVE_EDSP) && !defined(OPUS_ARM_PRESUME_EDSP)))
+extern opus_val32
+(*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
+ const opus_val16 *, opus_val32 *, int, int);
+# define OVERRIDE_PITCH_XCORR (1)
+# define celt_pitch_xcorr(_x, _y, xcorr, len, max_pitch, arch) \
+ ((*CELT_PITCH_XCORR_IMPL[(arch)&OPUS_ARCHMASK])(_x, _y, \
+ xcorr, len, max_pitch))
+
+# elif defined(OPUS_ARM_PRESUME_EDSP) || \
+ defined(OPUS_ARM_PRESUME_MEDIA) || \
+ defined(OPUS_ARM_PRESUME_NEON)
+# define OVERRIDE_PITCH_XCORR (1)
+# define celt_pitch_xcorr(_x, _y, xcorr, len, max_pitch, arch) \
+ ((void)(arch),PRESUME_NEON(celt_pitch_xcorr)(_x, _y, xcorr, len, max_pitch))
+
+# endif
+
+# if defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+void xcorr_kernel_neon_fixed(
+ const opus_val16 *x,
+ const opus_val16 *y,
+ opus_val32 sum[4],
+ int len);
+# endif
+
+# if defined(OPUS_HAVE_RTCD) && \
+ (defined(OPUS_ARM_MAY_HAVE_NEON_INTR) && !defined(OPUS_ARM_PRESUME_NEON_INTR))
+
+extern void (*const XCORR_KERNEL_IMPL[OPUS_ARCHMASK + 1])(
+ const opus_val16 *x,
+ const opus_val16 *y,
+ opus_val32 sum[4],
+ int len);
+
+# define OVERRIDE_XCORR_KERNEL (1)
+# define xcorr_kernel(x, y, sum, len, arch) \
+ ((*XCORR_KERNEL_IMPL[(arch) & OPUS_ARCHMASK])(x, y, sum, len))
+
+# elif defined(OPUS_ARM_PRESUME_NEON_INTR)
+# define OVERRIDE_XCORR_KERNEL (1)
+# define xcorr_kernel(x, y, sum, len, arch) \
+ ((void)arch, xcorr_kernel_neon_fixed(x, y, sum, len))
+
+# endif
+
+#else /* Start !FIXED_POINT */
+/* Float case */
+#if defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+void celt_pitch_xcorr_float_neon(const opus_val16 *_x, const opus_val16 *_y,
+ opus_val32 *xcorr, int len, int max_pitch);
+#endif
+
+# if defined(OPUS_HAVE_RTCD) && \
+ (defined(OPUS_ARM_MAY_HAVE_NEON_INTR) && !defined(OPUS_ARM_PRESUME_NEON_INTR))
+extern void
+(*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
+ const opus_val16 *, opus_val32 *, int, int);
+
+# define OVERRIDE_PITCH_XCORR (1)
+# define celt_pitch_xcorr(_x, _y, xcorr, len, max_pitch, arch) \
+ ((*CELT_PITCH_XCORR_IMPL[(arch)&OPUS_ARCHMASK])(_x, _y, \
+ xcorr, len, max_pitch))
+
+# elif defined(OPUS_ARM_PRESUME_NEON_INTR)
+
+# define OVERRIDE_PITCH_XCORR (1)
+# define celt_pitch_xcorr(_x, _y, xcorr, len, max_pitch, arch) \
+ ((void)(arch),celt_pitch_xcorr_float_neon(_x, _y, xcorr, len, max_pitch))
+
+# endif
+
+#endif /* end !FIXED_POINT */
+
+#endif
diff --git a/libopus/celt/bands.c b/libopus/celt/bands.c
new file mode 100644
index 0000000..87eaa6c
--- /dev/null
+++ b/libopus/celt/bands.c
@@ -0,0 +1,1529 @@
+/* Copyright (c) 2007-2008 CSIRO
+ Copyright (c) 2007-2009 Xiph.Org Foundation
+ Copyright (c) 2008-2009 Gregory Maxwell
+ Written by Jean-Marc Valin and Gregory Maxwell */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+#include "bands.h"
+#include "modes.h"
+#include "vq.h"
+#include "cwrs.h"
+#include "stack_alloc.h"
+#include "os_support.h"
+#include "mathops.h"
+#include "rate.h"
+#include "quant_bands.h"
+#include "pitch.h"
+
+int hysteresis_decision(opus_val16 val, const opus_val16 *thresholds, const opus_val16 *hysteresis, int N, int prev)
+{
+ int i;
+ for (i=0;i<N;i++)
+ {
+ if (val < thresholds[i])
+ break;
+ }
+ if (i>prev && val < thresholds[prev]+hysteresis[prev])
+ i=prev;
+ if (i<prev && val > thresholds[prev-1]-hysteresis[prev-1])
+ i=prev;
+ return i;
+}
+
+opus_uint32 celt_lcg_rand(opus_uint32 seed)
+{
+ return 1664525 * seed + 1013904223;
+}
+
+/* This is a cos() approximation designed to be bit-exact on any platform. Bit exactness
+ with this approximation is important because it has an impact on the bit allocation */
+static opus_int16 bitexact_cos(opus_int16 x)
+{
+ opus_int32 tmp;
+ opus_int16 x2;
+ tmp = (4096+((opus_int32)(x)*(x)))>>13;
+ celt_assert(tmp<=32767);
+ x2 = tmp;
+ x2 = (32767-x2) + FRAC_MUL16(x2, (-7651 + FRAC_MUL16(x2, (8277 + FRAC_MUL16(-626, x2)))));
+ celt_assert(x2<=32766);
+ return 1+x2;
+}
+
+static int bitexact_log2tan(int isin,int icos)
+{
+ int lc;
+ int ls;
+ lc=EC_ILOG(icos);
+ ls=EC_ILOG(isin);
+ icos<<=15-lc;
+ isin<<=15-ls;
+ return (ls-lc)*(1<<11)
+ +FRAC_MUL16(isin, FRAC_MUL16(isin, -2597) + 7932)
+ -FRAC_MUL16(icos, FRAC_MUL16(icos, -2597) + 7932);
+}
+
+#ifdef FIXED_POINT
+/* Compute the amplitude (sqrt energy) in each of the bands */
+void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int LM)
+{
+ int i, c, N;
+ const opus_int16 *eBands = m->eBands;
+ N = m->shortMdctSize<<LM;
+ c=0; do {
+ for (i=0;i<end;i++)
+ {
+ int j;
+ opus_val32 maxval=0;
+ opus_val32 sum = 0;
+
+ maxval = celt_maxabs32(&X[c*N+(eBands[i]<<LM)], (eBands[i+1]-eBands[i])<<LM);
+ if (maxval > 0)
+ {
+ int shift = celt_ilog2(maxval) - 14 + (((m->logN[i]>>BITRES)+LM+1)>>1);
+ j=eBands[i]<<LM;
+ if (shift>0)
+ {
+ do {
+ sum = MAC16_16(sum, EXTRACT16(SHR32(X[j+c*N],shift)),
+ EXTRACT16(SHR32(X[j+c*N],shift)));
+ } while (++j<eBands[i+1]<<LM);
+ } else {
+ do {
+ sum = MAC16_16(sum, EXTRACT16(SHL32(X[j+c*N],-shift)),
+ EXTRACT16(SHL32(X[j+c*N],-shift)));
+ } while (++j<eBands[i+1]<<LM);
+ }
+ /* We're adding one here to ensure the normalized band isn't larger than unity norm */
+ bandE[i+c*m->nbEBands] = EPSILON+VSHR32(EXTEND32(celt_sqrt(sum)),-shift);
+ } else {
+ bandE[i+c*m->nbEBands] = EPSILON;
+ }
+ /*printf ("%f ", bandE[i+c*m->nbEBands]);*/
+ }
+ } while (++c<C);
+ /*printf ("\n");*/
+}
+
+/* Normalise each band such that the energy is one. */
+void normalise_bands(const CELTMode *m, const celt_sig * OPUS_RESTRICT freq, celt_norm * OPUS_RESTRICT X, const celt_ener *bandE, int end, int C, int M)
+{
+ int i, c, N;
+ const opus_int16 *eBands = m->eBands;
+ N = M*m->shortMdctSize;
+ c=0; do {
+ i=0; do {
+ opus_val16 g;
+ int j,shift;
+ opus_val16 E;
+ shift = celt_zlog2(bandE[i+c*m->nbEBands])-13;
+ E = VSHR32(bandE[i+c*m->nbEBands], shift);
+ g = EXTRACT16(celt_rcp(SHL32(E,3)));
+ j=M*eBands[i]; do {
+ X[j+c*N] = MULT16_16_Q15(VSHR32(freq[j+c*N],shift-1),g);
+ } while (++j<M*eBands[i+1]);
+ } while (++i<end);
+ } while (++c<C);
+}
+
+#else /* FIXED_POINT */
+/* Compute the amplitude (sqrt energy) in each of the bands */
+void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int LM)
+{
+ int i, c, N;
+ const opus_int16 *eBands = m->eBands;
+ N = m->shortMdctSize<<LM;
+ c=0; do {
+ for (i=0;i<end;i++)
+ {
+ opus_val32 sum;
+ sum = 1e-27f + celt_inner_prod_c(&X[c*N+(eBands[i]<<LM)], &X[c*N+(eBands[i]<<LM)], (eBands[i+1]-eBands[i])<<LM);
+ bandE[i+c*m->nbEBands] = celt_sqrt(sum);
+ /*printf ("%f ", bandE[i+c*m->nbEBands]);*/
+ }
+ } while (++c<C);
+ /*printf ("\n");*/
+}
+
+/* Normalise each band such that the energy is one. */
+void normalise_bands(const CELTMode *m, const celt_sig * OPUS_RESTRICT freq, celt_norm * OPUS_RESTRICT X, const celt_ener *bandE, int end, int C, int M)
+{
+ int i, c, N;
+ const opus_int16 *eBands = m->eBands;
+ N = M*m->shortMdctSize;
+ c=0; do {
+ for (i=0;i<end;i++)
+ {
+ int j;
+ opus_val16 g = 1.f/(1e-27f+bandE[i+c*m->nbEBands]);
+ for (j=M*eBands[i];j<M*eBands[i+1];j++)
+ X[j+c*N] = freq[j+c*N]*g;
+ }
+ } while (++c<C);
+}
+
+#endif /* FIXED_POINT */
+
+/* De-normalise the energy to produce the synthesis from the unit-energy bands */
+void denormalise_bands(const CELTMode *m, const celt_norm * OPUS_RESTRICT X,
+ celt_sig * OPUS_RESTRICT freq, const opus_val16 *bandLogE, int start,
+ int end, int M, int downsample, int silence)
+{
+ int i, N;
+ int bound;
+ celt_sig * OPUS_RESTRICT f;
+ const celt_norm * OPUS_RESTRICT x;
+ const opus_int16 *eBands = m->eBands;
+ N = M*m->shortMdctSize;
+ bound = M*eBands[end];
+ if (downsample!=1)
+ bound = IMIN(bound, N/downsample);
+ if (silence)
+ {
+ bound = 0;
+ start = end = 0;
+ }
+ f = freq;
+ x = X+M*eBands[start];
+ for (i=0;i<M*eBands[start];i++)
+ *f++ = 0;
+ for (i=start;i<end;i++)
+ {
+ int j, band_end;
+ opus_val16 g;
+ opus_val16 lg;
+#ifdef FIXED_POINT
+ int shift;
+#endif
+ j=M*eBands[i];
+ band_end = M*eBands[i+1];
+ lg = ADD16(bandLogE[i], SHL16((opus_val16)eMeans[i],6));
+#ifndef FIXED_POINT
+ g = celt_exp2(lg);
+#else
+ /* Handle the integer part of the log energy */
+ shift = 16-(lg>>DB_SHIFT);
+ if (shift>31)
+ {
+ shift=0;
+ g=0;
+ } else {
+ /* Handle the fractional part. */
+ g = celt_exp2_frac(lg&((1<<DB_SHIFT)-1));
+ }
+ /* Handle extreme gains with negative shift. */
+ if (shift<0)
+ {
+ /* For shift < -2 we'd be likely to overflow, so we're capping
+ the gain here. This shouldn't happen unless the bitstream is
+ already corrupted. */
+ if (shift < -2)
+ {
+ g = 32767;
+ shift = -2;
+ }
+ do {
+ *f++ = SHL32(MULT16_16(*x++, g), -shift);
+ } while (++j<band_end);
+ } else
+#endif
+ /* Be careful of the fixed-point "else" just above when changing this code */
+ do {
+ *f++ = SHR32(MULT16_16(*x++, g), shift);
+ } while (++j<band_end);
+ }
+ celt_assert(start <= end);
+ OPUS_CLEAR(&freq[bound], N-bound);
+}
+
+/* This prevents energy collapse for transients with multiple short MDCTs */
+void anti_collapse(const CELTMode *m, celt_norm *X_, unsigned char *collapse_masks, int LM, int C, int size,
+ int start, int end, const opus_val16 *logE, const opus_val16 *prev1logE,
+ const opus_val16 *prev2logE, const int *pulses, opus_uint32 seed, int arch)
+{
+ int c, i, j, k;
+ for (i=start;i<end;i++)
+ {
+ int N0;
+ opus_val16 thresh, sqrt_1;
+ int depth;
+#ifdef FIXED_POINT
+ int shift;
+ opus_val32 thresh32;
+#endif
+
+ N0 = m->eBands[i+1]-m->eBands[i];
+ /* depth in 1/8 bits */
+ celt_assert(pulses[i]>=0);
+ depth = celt_udiv(1+pulses[i], (m->eBands[i+1]-m->eBands[i]))>>LM;
+
+#ifdef FIXED_POINT
+ thresh32 = SHR32(celt_exp2(-SHL16(depth, 10-BITRES)),1);
+ thresh = MULT16_32_Q15(QCONST16(0.5f, 15), MIN32(32767,thresh32));
+ {
+ opus_val32 t;
+ t = N0<<LM;
+ shift = celt_ilog2(t)>>1;
+ t = SHL32(t, (7-shift)<<1);
+ sqrt_1 = celt_rsqrt_norm(t);
+ }
+#else
+ thresh = .5f*celt_exp2(-.125f*depth);
+ sqrt_1 = celt_rsqrt(N0<<LM);
+#endif
+
+ c=0; do
+ {
+ celt_norm *X;
+ opus_val16 prev1;
+ opus_val16 prev2;
+ opus_val32 Ediff;
+ opus_val16 r;
+ int renormalize=0;
+ prev1 = prev1logE[c*m->nbEBands+i];
+ prev2 = prev2logE[c*m->nbEBands+i];
+ if (C==1)
+ {
+ prev1 = MAX16(prev1,prev1logE[m->nbEBands+i]);
+ prev2 = MAX16(prev2,prev2logE[m->nbEBands+i]);
+ }
+ Ediff = EXTEND32(logE[c*m->nbEBands+i])-EXTEND32(MIN16(prev1,prev2));
+ Ediff = MAX32(0, Ediff);
+
+#ifdef FIXED_POINT
+ if (Ediff < 16384)
+ {
+ opus_val32 r32 = SHR32(celt_exp2(-EXTRACT16(Ediff)),1);
+ r = 2*MIN16(16383,r32);
+ } else {
+ r = 0;
+ }
+ if (LM==3)
+ r = MULT16_16_Q14(23170, MIN32(23169, r));
+ r = SHR16(MIN16(thresh, r),1);
+ r = SHR32(MULT16_16_Q15(sqrt_1, r),shift);
+#else
+ /* r needs to be multiplied by 2 or 2*sqrt(2) depending on LM because
+ short blocks don't have the same energy as long */
+ r = 2.f*celt_exp2(-Ediff);
+ if (LM==3)
+ r *= 1.41421356f;
+ r = MIN16(thresh, r);
+ r = r*sqrt_1;
+#endif
+ X = X_+c*size+(m->eBands[i]<<LM);
+ for (k=0;k<1<<LM;k++)
+ {
+ /* Detect collapse */
+ if (!(collapse_masks[i*C+c]&1<<k))
+ {
+ /* Fill with noise */
+ for (j=0;j<N0;j++)
+ {
+ seed = celt_lcg_rand(seed);
+ X[(j<<LM)+k] = (seed&0x8000 ? r : -r);
+ }
+ renormalize = 1;
+ }
+ }
+ /* We just added some energy, so we need to renormalise */
+ if (renormalize)
+ renormalise_vector(X, N0<<LM, Q15ONE, arch);
+ } while (++c<C);
+ }
+}
+
+static void intensity_stereo(const CELTMode *m, celt_norm * OPUS_RESTRICT X, const celt_norm * OPUS_RESTRICT Y, const celt_ener *bandE, int bandID, int N)
+{
+ int i = bandID;
+ int j;
+ opus_val16 a1, a2;
+ opus_val16 left, right;
+ opus_val16 norm;
+#ifdef FIXED_POINT
+ int shift = celt_zlog2(MAX32(bandE[i], bandE[i+m->nbEBands]))-13;
+#endif
+ left = VSHR32(bandE[i],shift);
+ right = VSHR32(bandE[i+m->nbEBands],shift);
+ norm = EPSILON + celt_sqrt(EPSILON+MULT16_16(left,left)+MULT16_16(right,right));
+ a1 = DIV32_16(SHL32(EXTEND32(left),14),norm);
+ a2 = DIV32_16(SHL32(EXTEND32(right),14),norm);
+ for (j=0;j<N;j++)
+ {
+ celt_norm r, l;
+ l = X[j];
+ r = Y[j];
+ X[j] = EXTRACT16(SHR32(MAC16_16(MULT16_16(a1, l), a2, r), 14));
+ /* Side is not encoded, no need to calculate */
+ }
+}
+
+static void stereo_split(celt_norm * OPUS_RESTRICT X, celt_norm * OPUS_RESTRICT Y, int N)
+{
+ int j;
+ for (j=0;j<N;j++)
+ {
+ opus_val32 r, l;
+ l = MULT16_16(QCONST16(.70710678f, 15), X[j]);
+ r = MULT16_16(QCONST16(.70710678f, 15), Y[j]);
+ X[j] = EXTRACT16(SHR32(ADD32(l, r), 15));
+ Y[j] = EXTRACT16(SHR32(SUB32(r, l), 15));
+ }
+}
+
+static void stereo_merge(celt_norm * OPUS_RESTRICT X, celt_norm * OPUS_RESTRICT Y, opus_val16 mid, int N, int arch)
+{
+ int j;
+ opus_val32 xp=0, side=0;
+ opus_val32 El, Er;
+ opus_val16 mid2;
+#ifdef FIXED_POINT
+ int kl, kr;
+#endif
+ opus_val32 t, lgain, rgain;
+
+ /* Compute the norm of X+Y and X-Y as |X|^2 + |Y|^2 +/- sum(xy) */
+ dual_inner_prod(Y, X, Y, N, &xp, &side, arch);
+ /* Compensating for the mid normalization */
+ xp = MULT16_32_Q15(mid, xp);
+ /* mid and side are in Q15, not Q14 like X and Y */
+ mid2 = SHR16(mid, 1);
+ El = MULT16_16(mid2, mid2) + side - 2*xp;
+ Er = MULT16_16(mid2, mid2) + side + 2*xp;
+ if (Er < QCONST32(6e-4f, 28) || El < QCONST32(6e-4f, 28))
+ {
+ OPUS_COPY(Y, X, N);
+ return;
+ }
+
+#ifdef FIXED_POINT
+ kl = celt_ilog2(El)>>1;
+ kr = celt_ilog2(Er)>>1;
+#endif
+ t = VSHR32(El, (kl-7)<<1);
+ lgain = celt_rsqrt_norm(t);
+ t = VSHR32(Er, (kr-7)<<1);
+ rgain = celt_rsqrt_norm(t);
+
+#ifdef FIXED_POINT
+ if (kl < 7)
+ kl = 7;
+ if (kr < 7)
+ kr = 7;
+#endif
+
+ for (j=0;j<N;j++)
+ {
+ celt_norm r, l;
+ /* Apply mid scaling (side is already scaled) */
+ l = MULT16_16_P15(mid, X[j]);
+ r = Y[j];
+ X[j] = EXTRACT16(PSHR32(MULT16_16(lgain, SUB16(l,r)), kl+1));
+ Y[j] = EXTRACT16(PSHR32(MULT16_16(rgain, ADD16(l,r)), kr+1));
+ }
+}
+
+/* Decide whether we should spread the pulses in the current frame */
+int spreading_decision(const CELTMode *m, const celt_norm *X, int *average,
+ int last_decision, int *hf_average, int *tapset_decision, int update_hf,
+ int end, int C, int M)
+{
+ int i, c, N0;
+ int sum = 0, nbBands=0;
+ const opus_int16 * OPUS_RESTRICT eBands = m->eBands;
+ int decision;
+ int hf_sum=0;
+
+ celt_assert(end>0);
+
+ N0 = M*m->shortMdctSize;
+
+ if (M*(eBands[end]-eBands[end-1]) <= 8)
+ return SPREAD_NONE;
+ c=0; do {
+ for (i=0;i<end;i++)
+ {
+ int j, N, tmp=0;
+ int tcount[3] = {0,0,0};
+ const celt_norm * OPUS_RESTRICT x = X+M*eBands[i]+c*N0;
+ N = M*(eBands[i+1]-eBands[i]);
+ if (N<=8)
+ continue;
+ /* Compute rough CDF of |x[j]| */
+ for (j=0;j<N;j++)
+ {
+ opus_val32 x2N; /* Q13 */
+
+ x2N = MULT16_16(MULT16_16_Q15(x[j], x[j]), N);
+ if (x2N < QCONST16(0.25f,13))
+ tcount[0]++;
+ if (x2N < QCONST16(0.0625f,13))
+ tcount[1]++;
+ if (x2N < QCONST16(0.015625f,13))
+ tcount[2]++;
+ }
+
+ /* Only include four last bands (8 kHz and up) */
+ if (i>m->nbEBands-4)
+ hf_sum += celt_udiv(32*(tcount[1]+tcount[0]), N);
+ tmp = (2*tcount[2] >= N) + (2*tcount[1] >= N) + (2*tcount[0] >= N);
+ sum += tmp*256;
+ nbBands++;
+ }
+ } while (++c<C);
+
+ if (update_hf)
+ {
+ if (hf_sum)
+ hf_sum = celt_udiv(hf_sum, C*(4-m->nbEBands+end));
+ *hf_average = (*hf_average+hf_sum)>>1;
+ hf_sum = *hf_average;
+ if (*tapset_decision==2)
+ hf_sum += 4;
+ else if (*tapset_decision==0)
+ hf_sum -= 4;
+ if (hf_sum > 22)
+ *tapset_decision=2;
+ else if (hf_sum > 18)
+ *tapset_decision=1;
+ else
+ *tapset_decision=0;
+ }
+ /*printf("%d %d %d\n", hf_sum, *hf_average, *tapset_decision);*/
+ celt_assert(nbBands>0); /* end has to be non-zero */
+ celt_assert(sum>=0);
+ sum = celt_udiv(sum, nbBands);
+ /* Recursive averaging */
+ sum = (sum+*average)>>1;
+ *average = sum;
+ /* Hysteresis */
+ sum = (3*sum + (((3-last_decision)<<7) + 64) + 2)>>2;
+ if (sum < 80)
+ {
+ decision = SPREAD_AGGRESSIVE;
+ } else if (sum < 256)
+ {
+ decision = SPREAD_NORMAL;
+ } else if (sum < 384)
+ {
+ decision = SPREAD_LIGHT;
+ } else {
+ decision = SPREAD_NONE;
+ }
+#ifdef FUZZING
+ decision = rand()&0x3;
+ *tapset_decision=rand()%3;
+#endif
+ return decision;
+}
+
+/* Indexing table for converting from natural Hadamard to ordery Hadamard
+ This is essentially a bit-reversed Gray, on top of which we've added
+ an inversion of the order because we want the DC at the end rather than
+ the beginning. The lines are for N=2, 4, 8, 16 */
+static const int ordery_table[] = {
+ 1, 0,
+ 3, 0, 2, 1,
+ 7, 0, 4, 3, 6, 1, 5, 2,
+ 15, 0, 8, 7, 12, 3, 11, 4, 14, 1, 9, 6, 13, 2, 10, 5,
+};
+
+static void deinterleave_hadamard(celt_norm *X, int N0, int stride, int hadamard)
+{
+ int i,j;
+ VARDECL(celt_norm, tmp);
+ int N;
+ SAVE_STACK;
+ N = N0*stride;
+ ALLOC(tmp, N, celt_norm);
+ celt_assert(stride>0);
+ if (hadamard)
+ {
+ const int *ordery = ordery_table+stride-2;
+ for (i=0;i<stride;i++)
+ {
+ for (j=0;j<N0;j++)
+ tmp[ordery[i]*N0+j] = X[j*stride+i];
+ }
+ } else {
+ for (i=0;i<stride;i++)
+ for (j=0;j<N0;j++)
+ tmp[i*N0+j] = X[j*stride+i];
+ }
+ OPUS_COPY(X, tmp, N);
+ RESTORE_STACK;
+}
+
+static void interleave_hadamard(celt_norm *X, int N0, int stride, int hadamard)
+{
+ int i,j;
+ VARDECL(celt_norm, tmp);
+ int N;
+ SAVE_STACK;
+ N = N0*stride;
+ ALLOC(tmp, N, celt_norm);
+ if (hadamard)
+ {
+ const int *ordery = ordery_table+stride-2;
+ for (i=0;i<stride;i++)
+ for (j=0;j<N0;j++)
+ tmp[j*stride+i] = X[ordery[i]*N0+j];
+ } else {
+ for (i=0;i<stride;i++)
+ for (j=0;j<N0;j++)
+ tmp[j*stride+i] = X[i*N0+j];
+ }
+ OPUS_COPY(X, tmp, N);
+ RESTORE_STACK;
+}
+
+void haar1(celt_norm *X, int N0, int stride)
+{
+ int i, j;
+ N0 >>= 1;
+ for (i=0;i<stride;i++)
+ for (j=0;j<N0;j++)
+ {
+ opus_val32 tmp1, tmp2;
+ tmp1 = MULT16_16(QCONST16(.70710678f,15), X[stride*2*j+i]);
+ tmp2 = MULT16_16(QCONST16(.70710678f,15), X[stride*(2*j+1)+i]);
+ X[stride*2*j+i] = EXTRACT16(PSHR32(ADD32(tmp1, tmp2), 15));
+ X[stride*(2*j+1)+i] = EXTRACT16(PSHR32(SUB32(tmp1, tmp2), 15));
+ }
+}
+
+static int compute_qn(int N, int b, int offset, int pulse_cap, int stereo)
+{
+ static const opus_int16 exp2_table8[8] =
+ {16384, 17866, 19483, 21247, 23170, 25267, 27554, 30048};
+ int qn, qb;
+ int N2 = 2*N-1;
+ if (stereo && N==2)
+ N2--;
+ /* The upper limit ensures that in a stereo split with itheta==16384, we'll
+ always have enough bits left over to code at least one pulse in the
+ side; otherwise it would collapse, since it doesn't get folded. */
+ qb = celt_sudiv(b+N2*offset, N2);
+ qb = IMIN(b-pulse_cap-(4<<BITRES), qb);
+
+ qb = IMIN(8<<BITRES, qb);
+
+ if (qb<(1<<BITRES>>1)) {
+ qn = 1;
+ } else {
+ qn = exp2_table8[qb&0x7]>>(14-(qb>>BITRES));
+ qn = (qn+1)>>1<<1;
+ }
+ celt_assert(qn <= 256);
+ return qn;
+}
+
+struct band_ctx {
+ int encode;
+ const CELTMode *m;
+ int i;
+ int intensity;
+ int spread;
+ int tf_change;
+ ec_ctx *ec;
+ opus_int32 remaining_bits;
+ const celt_ener *bandE;
+ opus_uint32 seed;
+ int arch;
+};
+
+struct split_ctx {
+ int inv;
+ int imid;
+ int iside;
+ int delta;
+ int itheta;
+ int qalloc;
+};
+
+static void compute_theta(struct band_ctx *ctx, struct split_ctx *sctx,
+ celt_norm *X, celt_norm *Y, int N, int *b, int B, int B0,
+ int LM,
+ int stereo, int *fill)
+{
+ int qn;
+ int itheta=0;
+ int delta;
+ int imid, iside;
+ int qalloc;
+ int pulse_cap;
+ int offset;
+ opus_int32 tell;
+ int inv=0;
+ int encode;
+ const CELTMode *m;
+ int i;
+ int intensity;
+ ec_ctx *ec;
+ const celt_ener *bandE;
+
+ encode = ctx->encode;
+ m = ctx->m;
+ i = ctx->i;
+ intensity = ctx->intensity;
+ ec = ctx->ec;
+ bandE = ctx->bandE;
+
+ /* Decide on the resolution to give to the split parameter theta */
+ pulse_cap = m->logN[i]+LM*(1<<BITRES);
+ offset = (pulse_cap>>1) - (stereo&&N==2 ? QTHETA_OFFSET_TWOPHASE : QTHETA_OFFSET);
+ qn = compute_qn(N, *b, offset, pulse_cap, stereo);
+ if (stereo && i>=intensity)
+ qn = 1;
+ if (encode)
+ {
+ /* theta is the atan() of the ratio between the (normalized)
+ side and mid. With just that parameter, we can re-scale both
+ mid and side because we know that 1) they have unit norm and
+ 2) they are orthogonal. */
+ itheta = stereo_itheta(X, Y, stereo, N, ctx->arch);
+ }
+ tell = ec_tell_frac(ec);
+ if (qn!=1)
+ {
+ if (encode)
+ itheta = (itheta*(opus_int32)qn+8192)>>14;
+
+ /* Entropy coding of the angle. We use a uniform pdf for the
+ time split, a step for stereo, and a triangular one for the rest. */
+ if (stereo && N>2)
+ {
+ int p0 = 3;
+ int x = itheta;
+ int x0 = qn/2;
+ int ft = p0*(x0+1) + x0;
+ /* Use a probability of p0 up to itheta=8192 and then use 1 after */
+ if (encode)
+ {
+ ec_encode(ec,x<=x0?p0*x:(x-1-x0)+(x0+1)*p0,x<=x0?p0*(x+1):(x-x0)+(x0+1)*p0,ft);
+ } else {
+ int fs;
+ fs=ec_decode(ec,ft);
+ if (fs<(x0+1)*p0)
+ x=fs/p0;
+ else
+ x=x0+1+(fs-(x0+1)*p0);
+ ec_dec_update(ec,x<=x0?p0*x:(x-1-x0)+(x0+1)*p0,x<=x0?p0*(x+1):(x-x0)+(x0+1)*p0,ft);
+ itheta = x;
+ }
+ } else if (B0>1 || stereo) {
+ /* Uniform pdf */
+ if (encode)
+ ec_enc_uint(ec, itheta, qn+1);
+ else
+ itheta = ec_dec_uint(ec, qn+1);
+ } else {
+ int fs=1, ft;
+ ft = ((qn>>1)+1)*((qn>>1)+1);
+ if (encode)
+ {
+ int fl;
+
+ fs = itheta <= (qn>>1) ? itheta + 1 : qn + 1 - itheta;
+ fl = itheta <= (qn>>1) ? itheta*(itheta + 1)>>1 :
+ ft - ((qn + 1 - itheta)*(qn + 2 - itheta)>>1);
+
+ ec_encode(ec, fl, fl+fs, ft);
+ } else {
+ /* Triangular pdf */
+ int fl=0;
+ int fm;
+ fm = ec_decode(ec, ft);
+
+ if (fm < ((qn>>1)*((qn>>1) + 1)>>1))
+ {
+ itheta = (isqrt32(8*(opus_uint32)fm + 1) - 1)>>1;
+ fs = itheta + 1;
+ fl = itheta*(itheta + 1)>>1;
+ }
+ else
+ {
+ itheta = (2*(qn + 1)
+ - isqrt32(8*(opus_uint32)(ft - fm - 1) + 1))>>1;
+ fs = qn + 1 - itheta;
+ fl = ft - ((qn + 1 - itheta)*(qn + 2 - itheta)>>1);
+ }
+
+ ec_dec_update(ec, fl, fl+fs, ft);
+ }
+ }
+ celt_assert(itheta>=0);
+ itheta = celt_udiv((opus_int32)itheta*16384, qn);
+ if (encode && stereo)
+ {
+ if (itheta==0)
+ intensity_stereo(m, X, Y, bandE, i, N);
+ else
+ stereo_split(X, Y, N);
+ }
+ /* NOTE: Renormalising X and Y *may* help fixed-point a bit at very high rate.
+ Let's do that at higher complexity */
+ } else if (stereo) {
+ if (encode)
+ {
+ inv = itheta > 8192;
+ if (inv)
+ {
+ int j;
+ for (j=0;j<N;j++)
+ Y[j] = -Y[j];
+ }
+ intensity_stereo(m, X, Y, bandE, i, N);
+ }
+ if (*b>2<<BITRES && ctx->remaining_bits > 2<<BITRES)
+ {
+ if (encode)
+ ec_enc_bit_logp(ec, inv, 2);
+ else
+ inv = ec_dec_bit_logp(ec, 2);
+ } else
+ inv = 0;
+ itheta = 0;
+ }
+ qalloc = ec_tell_frac(ec) - tell;
+ *b -= qalloc;
+
+ if (itheta == 0)
+ {
+ imid = 32767;
+ iside = 0;
+ *fill &= (1<<B)-1;
+ delta = -16384;
+ } else if (itheta == 16384)
+ {
+ imid = 0;
+ iside = 32767;
+ *fill &= ((1<<B)-1)<<B;
+ delta = 16384;
+ } else {
+ imid = bitexact_cos((opus_int16)itheta);
+ iside = bitexact_cos((opus_int16)(16384-itheta));
+ /* This is the mid vs side allocation that minimizes squared error
+ in that band. */
+ delta = FRAC_MUL16((N-1)<<7,bitexact_log2tan(iside,imid));
+ }
+
+ sctx->inv = inv;
+ sctx->imid = imid;
+ sctx->iside = iside;
+ sctx->delta = delta;
+ sctx->itheta = itheta;
+ sctx->qalloc = qalloc;
+}
+static unsigned quant_band_n1(struct band_ctx *ctx, celt_norm *X, celt_norm *Y, int b,
+ celt_norm *lowband_out)
+{
+#ifdef RESYNTH
+ int resynth = 1;
+#else
+ int resynth = !ctx->encode;
+#endif
+ int c;
+ int stereo;
+ celt_norm *x = X;
+ int encode;
+ ec_ctx *ec;
+
+ encode = ctx->encode;
+ ec = ctx->ec;
+
+ stereo = Y != NULL;
+ c=0; do {
+ int sign=0;
+ if (ctx->remaining_bits>=1<<BITRES)
+ {
+ if (encode)
+ {
+ sign = x[0]<0;
+ ec_enc_bits(ec, sign, 1);
+ } else {
+ sign = ec_dec_bits(ec, 1);
+ }
+ ctx->remaining_bits -= 1<<BITRES;
+ b-=1<<BITRES;
+ }
+ if (resynth)
+ x[0] = sign ? -NORM_SCALING : NORM_SCALING;
+ x = Y;
+ } while (++c<1+stereo);
+ if (lowband_out)
+ lowband_out[0] = SHR16(X[0],4);
+ return 1;
+}
+
+/* This function is responsible for encoding and decoding a mono partition.
+ It can split the band in two and transmit the energy difference with
+ the two half-bands. It can be called recursively so bands can end up being
+ split in 8 parts. */
+static unsigned quant_partition(struct band_ctx *ctx, celt_norm *X,
+ int N, int b, int B, celt_norm *lowband,
+ int LM,
+ opus_val16 gain, int fill)
+{
+ const unsigned char *cache;
+ int q;
+ int curr_bits;
+ int imid=0, iside=0;
+ int B0=B;
+ opus_val16 mid=0, side=0;
+ unsigned cm=0;
+#ifdef RESYNTH
+ int resynth = 1;
+#else
+ int resynth = !ctx->encode;
+#endif
+ celt_norm *Y=NULL;
+ int encode;
+ const CELTMode *m;
+ int i;
+ int spread;
+ ec_ctx *ec;
+
+ encode = ctx->encode;
+ m = ctx->m;
+ i = ctx->i;
+ spread = ctx->spread;
+ ec = ctx->ec;
+
+ /* If we need 1.5 more bit than we can produce, split the band in two. */
+ cache = m->cache.bits + m->cache.index[(LM+1)*m->nbEBands+i];
+ if (LM != -1 && b > cache[cache[0]]+12 && N>2)
+ {
+ int mbits, sbits, delta;
+ int itheta;
+ int qalloc;
+ struct split_ctx sctx;
+ celt_norm *next_lowband2=NULL;
+ opus_int32 rebalance;
+
+ N >>= 1;
+ Y = X+N;
+ LM -= 1;
+ if (B==1)
+ fill = (fill&1)|(fill<<1);
+ B = (B+1)>>1;
+
+ compute_theta(ctx, &sctx, X, Y, N, &b, B, B0,
+ LM, 0, &fill);
+ imid = sctx.imid;
+ iside = sctx.iside;
+ delta = sctx.delta;
+ itheta = sctx.itheta;
+ qalloc = sctx.qalloc;
+#ifdef FIXED_POINT
+ mid = imid;
+ side = iside;
+#else
+ mid = (1.f/32768)*imid;
+ side = (1.f/32768)*iside;
+#endif
+
+ /* Give more bits to low-energy MDCTs than they would otherwise deserve */
+ if (B0>1 && (itheta&0x3fff))
+ {
+ if (itheta > 8192)
+ /* Rough approximation for pre-echo masking */
+ delta -= delta>>(4-LM);
+ else
+ /* Corresponds to a forward-masking slope of 1.5 dB per 10 ms */
+ delta = IMIN(0, delta + (N<<BITRES>>(5-LM)));
+ }
+ mbits = IMAX(0, IMIN(b, (b-delta)/2));
+ sbits = b-mbits;
+ ctx->remaining_bits -= qalloc;
+
+ if (lowband)
+ next_lowband2 = lowband+N; /* >32-bit split case */
+
+ rebalance = ctx->remaining_bits;
+ if (mbits >= sbits)
+ {
+ cm = quant_partition(ctx, X, N, mbits, B,
+ lowband, LM,
+ MULT16_16_P15(gain,mid), fill);
+ rebalance = mbits - (rebalance-ctx->remaining_bits);
+ if (rebalance > 3<<BITRES && itheta!=0)
+ sbits += rebalance - (3<<BITRES);
+ cm |= quant_partition(ctx, Y, N, sbits, B,
+ next_lowband2, LM,
+ MULT16_16_P15(gain,side), fill>>B)<<(B0>>1);
+ } else {
+ cm = quant_partition(ctx, Y, N, sbits, B,
+ next_lowband2, LM,
+ MULT16_16_P15(gain,side), fill>>B)<<(B0>>1);
+ rebalance = sbits - (rebalance-ctx->remaining_bits);
+ if (rebalance > 3<<BITRES && itheta!=16384)
+ mbits += rebalance - (3<<BITRES);
+ cm |= quant_partition(ctx, X, N, mbits, B,
+ lowband, LM,
+ MULT16_16_P15(gain,mid), fill);
+ }
+ } else {
+ /* This is the basic no-split case */
+ q = bits2pulses(m, i, LM, b);
+ curr_bits = pulses2bits(m, i, LM, q);
+ ctx->remaining_bits -= curr_bits;
+
+ /* Ensures we can never bust the budget */
+ while (ctx->remaining_bits < 0 && q > 0)
+ {
+ ctx->remaining_bits += curr_bits;
+ q--;
+ curr_bits = pulses2bits(m, i, LM, q);
+ ctx->remaining_bits -= curr_bits;
+ }
+
+ if (q!=0)
+ {
+ int K = get_pulses(q);
+
+ /* Finally do the actual quantization */
+ if (encode)
+ {
+ cm = alg_quant(X, N, K, spread, B, ec
+#ifdef RESYNTH
+ , gain
+#endif
+ );
+ } else {
+ cm = alg_unquant(X, N, K, spread, B, ec, gain);
+ }
+ } else {
+ /* If there's no pulse, fill the band anyway */
+ int j;
+ if (resynth)
+ {
+ unsigned cm_mask;
+ /* B can be as large as 16, so this shift might overflow an int on a
+ 16-bit platform; use a long to get defined behavior.*/
+ cm_mask = (unsigned)(1UL<<B)-1;
+ fill &= cm_mask;
+ if (!fill)
+ {
+ OPUS_CLEAR(X, N);
+ } else {
+ if (lowband == NULL)
+ {
+ /* Noise */
+ for (j=0;j<N;j++)
+ {
+ ctx->seed = celt_lcg_rand(ctx->seed);
+ X[j] = (celt_norm)((opus_int32)ctx->seed>>20);
+ }
+ cm = cm_mask;
+ } else {
+ /* Folded spectrum */
+ for (j=0;j<N;j++)
+ {
+ opus_val16 tmp;
+ ctx->seed = celt_lcg_rand(ctx->seed);
+ /* About 48 dB below the "normal" folding level */
+ tmp = QCONST16(1.0f/256, 10);
+ tmp = (ctx->seed)&0x8000 ? tmp : -tmp;
+ X[j] = lowband[j]+tmp;
+ }
+ cm = fill;
+ }
+ renormalise_vector(X, N, gain, ctx->arch);
+ }
+ }
+ }
+ }
+
+ return cm;
+}
+
+
+/* This function is responsible for encoding and decoding a band for the mono case. */
+static unsigned quant_band(struct band_ctx *ctx, celt_norm *X,
+ int N, int b, int B, celt_norm *lowband,
+ int LM, celt_norm *lowband_out,
+ opus_val16 gain, celt_norm *lowband_scratch, int fill)
+{
+ int N0=N;
+ int N_B=N;
+ int N_B0;
+ int B0=B;
+ int time_divide=0;
+ int recombine=0;
+ int longBlocks;
+ unsigned cm=0;
+#ifdef RESYNTH
+ int resynth = 1;
+#else
+ int resynth = !ctx->encode;
+#endif
+ int k;
+ int encode;
+ int tf_change;
+
+ encode = ctx->encode;
+ tf_change = ctx->tf_change;
+
+ longBlocks = B0==1;
+
+ N_B = celt_udiv(N_B, B);
+
+ /* Special case for one sample */
+ if (N==1)
+ {
+ return quant_band_n1(ctx, X, NULL, b, lowband_out);
+ }
+
+ if (tf_change>0)
+ recombine = tf_change;
+ /* Band recombining to increase frequency resolution */
+
+ if (lowband_scratch && lowband && (recombine || ((N_B&1) == 0 && tf_change<0) || B0>1))
+ {
+ OPUS_COPY(lowband_scratch, lowband, N);
+ lowband = lowband_scratch;
+ }
+
+ for (k=0;k<recombine;k++)
+ {
+ static const unsigned char bit_interleave_table[16]={
+ 0,1,1,1,2,3,3,3,2,3,3,3,2,3,3,3
+ };
+ if (encode)
+ haar1(X, N>>k, 1<<k);
+ if (lowband)
+ haar1(lowband, N>>k, 1<<k);
+ fill = bit_interleave_table[fill&0xF]|bit_interleave_table[fill>>4]<<2;
+ }
+ B>>=recombine;
+ N_B<<=recombine;
+
+ /* Increasing the time resolution */
+ while ((N_B&1) == 0 && tf_change<0)
+ {
+ if (encode)
+ haar1(X, N_B, B);
+ if (lowband)
+ haar1(lowband, N_B, B);
+ fill |= fill<<B;
+ B <<= 1;
+ N_B >>= 1;
+ time_divide++;
+ tf_change++;
+ }
+ B0=B;
+ N_B0 = N_B;
+
+ /* Reorganize the samples in time order instead of frequency order */
+ if (B0>1)
+ {
+ if (encode)
+ deinterleave_hadamard(X, N_B>>recombine, B0<<recombine, longBlocks);
+ if (lowband)
+ deinterleave_hadamard(lowband, N_B>>recombine, B0<<recombine, longBlocks);
+ }
+
+ cm = quant_partition(ctx, X, N, b, B, lowband,
+ LM, gain, fill);
+
+ /* This code is used by the decoder and by the resynthesis-enabled encoder */
+ if (resynth)
+ {
+ /* Undo the sample reorganization going from time order to frequency order */
+ if (B0>1)
+ interleave_hadamard(X, N_B>>recombine, B0<<recombine, longBlocks);
+
+ /* Undo time-freq changes that we did earlier */
+ N_B = N_B0;
+ B = B0;
+ for (k=0;k<time_divide;k++)
+ {
+ B >>= 1;
+ N_B <<= 1;
+ cm |= cm>>B;
+ haar1(X, N_B, B);
+ }
+
+ for (k=0;k<recombine;k++)
+ {
+ static const unsigned char bit_deinterleave_table[16]={
+ 0x00,0x03,0x0C,0x0F,0x30,0x33,0x3C,0x3F,
+ 0xC0,0xC3,0xCC,0xCF,0xF0,0xF3,0xFC,0xFF
+ };
+ cm = bit_deinterleave_table[cm];
+ haar1(X, N0>>k, 1<<k);
+ }
+ B<<=recombine;
+
+ /* Scale output for later folding */
+ if (lowband_out)
+ {
+ int j;
+ opus_val16 n;
+ n = celt_sqrt(SHL32(EXTEND32(N0),22));
+ for (j=0;j<N0;j++)
+ lowband_out[j] = MULT16_16_Q15(n,X[j]);
+ }
+ cm &= (1<<B)-1;
+ }
+ return cm;
+}
+
+
+/* This function is responsible for encoding and decoding a band for the stereo case. */
+static unsigned quant_band_stereo(struct band_ctx *ctx, celt_norm *X, celt_norm *Y,
+ int N, int b, int B, celt_norm *lowband,
+ int LM, celt_norm *lowband_out,
+ celt_norm *lowband_scratch, int fill)
+{
+ int imid=0, iside=0;
+ int inv = 0;
+ opus_val16 mid=0, side=0;
+ unsigned cm=0;
+#ifdef RESYNTH
+ int resynth = 1;
+#else
+ int resynth = !ctx->encode;
+#endif
+ int mbits, sbits, delta;
+ int itheta;
+ int qalloc;
+ struct split_ctx sctx;
+ int orig_fill;
+ int encode;
+ ec_ctx *ec;
+
+ encode = ctx->encode;
+ ec = ctx->ec;
+
+ /* Special case for one sample */
+ if (N==1)
+ {
+ return quant_band_n1(ctx, X, Y, b, lowband_out);
+ }
+
+ orig_fill = fill;
+
+ compute_theta(ctx, &sctx, X, Y, N, &b, B, B,
+ LM, 1, &fill);
+ inv = sctx.inv;
+ imid = sctx.imid;
+ iside = sctx.iside;
+ delta = sctx.delta;
+ itheta = sctx.itheta;
+ qalloc = sctx.qalloc;
+#ifdef FIXED_POINT
+ mid = imid;
+ side = iside;
+#else
+ mid = (1.f/32768)*imid;
+ side = (1.f/32768)*iside;
+#endif
+
+ /* This is a special case for N=2 that only works for stereo and takes
+ advantage of the fact that mid and side are orthogonal to encode
+ the side with just one bit. */
+ if (N==2)
+ {
+ int c;
+ int sign=0;
+ celt_norm *x2, *y2;
+ mbits = b;
+ sbits = 0;
+ /* Only need one bit for the side. */
+ if (itheta != 0 && itheta != 16384)
+ sbits = 1<<BITRES;
+ mbits -= sbits;
+ c = itheta > 8192;
+ ctx->remaining_bits -= qalloc+sbits;
+
+ x2 = c ? Y : X;
+ y2 = c ? X : Y;
+ if (sbits)
+ {
+ if (encode)
+ {
+ /* Here we only need to encode a sign for the side. */
+ sign = x2[0]*y2[1] - x2[1]*y2[0] < 0;
+ ec_enc_bits(ec, sign, 1);
+ } else {
+ sign = ec_dec_bits(ec, 1);
+ }
+ }
+ sign = 1-2*sign;
+ /* We use orig_fill here because we want to fold the side, but if
+ itheta==16384, we'll have cleared the low bits of fill. */
+ cm = quant_band(ctx, x2, N, mbits, B, lowband,
+ LM, lowband_out, Q15ONE, lowband_scratch, orig_fill);
+ /* We don't split N=2 bands, so cm is either 1 or 0 (for a fold-collapse),
+ and there's no need to worry about mixing with the other channel. */
+ y2[0] = -sign*x2[1];
+ y2[1] = sign*x2[0];
+ if (resynth)
+ {
+ celt_norm tmp;
+ X[0] = MULT16_16_Q15(mid, X[0]);
+ X[1] = MULT16_16_Q15(mid, X[1]);
+ Y[0] = MULT16_16_Q15(side, Y[0]);
+ Y[1] = MULT16_16_Q15(side, Y[1]);
+ tmp = X[0];
+ X[0] = SUB16(tmp,Y[0]);
+ Y[0] = ADD16(tmp,Y[0]);
+ tmp = X[1];
+ X[1] = SUB16(tmp,Y[1]);
+ Y[1] = ADD16(tmp,Y[1]);
+ }
+ } else {
+ /* "Normal" split code */
+ opus_int32 rebalance;
+
+ mbits = IMAX(0, IMIN(b, (b-delta)/2));
+ sbits = b-mbits;
+ ctx->remaining_bits -= qalloc;
+
+ rebalance = ctx->remaining_bits;
+ if (mbits >= sbits)
+ {
+ /* In stereo mode, we do not apply a scaling to the mid because we need the normalized
+ mid for folding later. */
+ cm = quant_band(ctx, X, N, mbits, B,
+ lowband, LM, lowband_out,
+ Q15ONE, lowband_scratch, fill);
+ rebalance = mbits - (rebalance-ctx->remaining_bits);
+ if (rebalance > 3<<BITRES && itheta!=0)
+ sbits += rebalance - (3<<BITRES);
+
+ /* For a stereo split, the high bits of fill are always zero, so no
+ folding will be done to the side. */
+ cm |= quant_band(ctx, Y, N, sbits, B,
+ NULL, LM, NULL,
+ side, NULL, fill>>B);
+ } else {
+ /* For a stereo split, the high bits of fill are always zero, so no
+ folding will be done to the side. */
+ cm = quant_band(ctx, Y, N, sbits, B,
+ NULL, LM, NULL,
+ side, NULL, fill>>B);
+ rebalance = sbits - (rebalance-ctx->remaining_bits);
+ if (rebalance > 3<<BITRES && itheta!=16384)
+ mbits += rebalance - (3<<BITRES);
+ /* In stereo mode, we do not apply a scaling to the mid because we need the normalized
+ mid for folding later. */
+ cm |= quant_band(ctx, X, N, mbits, B,
+ lowband, LM, lowband_out,
+ Q15ONE, lowband_scratch, fill);
+ }
+ }
+
+
+ /* This code is used by the decoder and by the resynthesis-enabled encoder */
+ if (resynth)
+ {
+ if (N!=2)
+ stereo_merge(X, Y, mid, N, ctx->arch);
+ if (inv)
+ {
+ int j;
+ for (j=0;j<N;j++)
+ Y[j] = -Y[j];
+ }
+ }
+ return cm;
+}
+
+
+void quant_all_bands(int encode, const CELTMode *m, int start, int end,
+ celt_norm *X_, celt_norm *Y_, unsigned char *collapse_masks,
+ const celt_ener *bandE, int *pulses, int shortBlocks, int spread,
+ int dual_stereo, int intensity, int *tf_res, opus_int32 total_bits,
+ opus_int32 balance, ec_ctx *ec, int LM, int codedBands,
+ opus_uint32 *seed, int arch)
+{
+ int i;
+ opus_int32 remaining_bits;
+ const opus_int16 * OPUS_RESTRICT eBands = m->eBands;
+ celt_norm * OPUS_RESTRICT norm, * OPUS_RESTRICT norm2;
+ VARDECL(celt_norm, _norm);
+ celt_norm *lowband_scratch;
+ int B;
+ int M;
+ int lowband_offset;
+ int update_lowband = 1;
+ int C = Y_ != NULL ? 2 : 1;
+ int norm_offset;
+#ifdef RESYNTH
+ int resynth = 1;
+#else
+ int resynth = !encode;
+#endif
+ struct band_ctx ctx;
+ SAVE_STACK;
+
+ M = 1<<LM;
+ B = shortBlocks ? M : 1;
+ norm_offset = M*eBands[start];
+ /* No need to allocate norm for the last band because we don't need an
+ output in that band. */
+ ALLOC(_norm, C*(M*eBands[m->nbEBands-1]-norm_offset), celt_norm);
+ norm = _norm;
+ norm2 = norm + M*eBands[m->nbEBands-1]-norm_offset;
+ /* We can use the last band as scratch space because we don't need that
+ scratch space for the last band. */
+ lowband_scratch = X_+M*eBands[m->nbEBands-1];
+
+ lowband_offset = 0;
+ ctx.bandE = bandE;
+ ctx.ec = ec;
+ ctx.encode = encode;
+ ctx.intensity = intensity;
+ ctx.m = m;
+ ctx.seed = *seed;
+ ctx.spread = spread;
+ ctx.arch = arch;
+ for (i=start;i<end;i++)
+ {
+ opus_int32 tell;
+ int b;
+ int N;
+ opus_int32 curr_balance;
+ int effective_lowband=-1;
+ celt_norm * OPUS_RESTRICT X, * OPUS_RESTRICT Y;
+ int tf_change=0;
+ unsigned x_cm;
+ unsigned y_cm;
+ int last;
+
+ ctx.i = i;
+ last = (i==end-1);
+
+ X = X_+M*eBands[i];
+ if (Y_!=NULL)
+ Y = Y_+M*eBands[i];
+ else
+ Y = NULL;
+ N = M*eBands[i+1]-M*eBands[i];
+ tell = ec_tell_frac(ec);
+
+ /* Compute how many bits we want to allocate to this band */
+ if (i != start)
+ balance -= tell;
+ remaining_bits = total_bits-tell-1;
+ ctx.remaining_bits = remaining_bits;
+ if (i <= codedBands-1)
+ {
+ curr_balance = celt_sudiv(balance, IMIN(3, codedBands-i));
+ b = IMAX(0, IMIN(16383, IMIN(remaining_bits+1,pulses[i]+curr_balance)));
+ } else {
+ b = 0;
+ }
+
+ if (resynth && M*eBands[i]-N >= M*eBands[start] && (update_lowband || lowband_offset==0))
+ lowband_offset = i;
+
+ tf_change = tf_res[i];
+ ctx.tf_change = tf_change;
+ if (i>=m->effEBands)
+ {
+ X=norm;
+ if (Y_!=NULL)
+ Y = norm;
+ lowband_scratch = NULL;
+ }
+ if (i==end-1)
+ lowband_scratch = NULL;
+
+ /* Get a conservative estimate of the collapse_mask's for the bands we're
+ going to be folding from. */
+ if (lowband_offset != 0 && (spread!=SPREAD_AGGRESSIVE || B>1 || tf_change<0))
+ {
+ int fold_start;
+ int fold_end;
+ int fold_i;
+ /* This ensures we never repeat spectral content within one band */
+ effective_lowband = IMAX(0, M*eBands[lowband_offset]-norm_offset-N);
+ fold_start = lowband_offset;
+ while(M*eBands[--fold_start] > effective_lowband+norm_offset);
+ fold_end = lowband_offset-1;
+ while(M*eBands[++fold_end] < effective_lowband+norm_offset+N);
+ x_cm = y_cm = 0;
+ fold_i = fold_start; do {
+ x_cm |= collapse_masks[fold_i*C+0];
+ y_cm |= collapse_masks[fold_i*C+C-1];
+ } while (++fold_i<fold_end);
+ }
+ /* Otherwise, we'll be using the LCG to fold, so all blocks will (almost
+ always) be non-zero. */
+ else
+ x_cm = y_cm = (1<<B)-1;
+
+ if (dual_stereo && i==intensity)
+ {
+ int j;
+
+ /* Switch off dual stereo to do intensity. */
+ dual_stereo = 0;
+ if (resynth)
+ for (j=0;j<M*eBands[i]-norm_offset;j++)
+ norm[j] = HALF32(norm[j]+norm2[j]);
+ }
+ if (dual_stereo)
+ {
+ x_cm = quant_band(&ctx, X, N, b/2, B,
+ effective_lowband != -1 ? norm+effective_lowband : NULL, LM,
+ last?NULL:norm+M*eBands[i]-norm_offset, Q15ONE, lowband_scratch, x_cm);
+ y_cm = quant_band(&ctx, Y, N, b/2, B,
+ effective_lowband != -1 ? norm2+effective_lowband : NULL, LM,
+ last?NULL:norm2+M*eBands[i]-norm_offset, Q15ONE, lowband_scratch, y_cm);
+ } else {
+ if (Y!=NULL)
+ {
+ x_cm = quant_band_stereo(&ctx, X, Y, N, b, B,
+ effective_lowband != -1 ? norm+effective_lowband : NULL, LM,
+ last?NULL:norm+M*eBands[i]-norm_offset, lowband_scratch, x_cm|y_cm);
+ } else {
+ x_cm = quant_band(&ctx, X, N, b, B,
+ effective_lowband != -1 ? norm+effective_lowband : NULL, LM,
+ last?NULL:norm+M*eBands[i]-norm_offset, Q15ONE, lowband_scratch, x_cm|y_cm);
+ }
+ y_cm = x_cm;
+ }
+ collapse_masks[i*C+0] = (unsigned char)x_cm;
+ collapse_masks[i*C+C-1] = (unsigned char)y_cm;
+ balance += pulses[i] + tell;
+
+ /* Update the folding position only as long as we have 1 bit/sample depth. */
+ update_lowband = b>(N<<BITRES);
+ }
+ *seed = ctx.seed;
+
+ RESTORE_STACK;
+}
+
diff --git a/libopus/celt/bands.h b/libopus/celt/bands.h
new file mode 100644
index 0000000..e8bef4b
--- /dev/null
+++ b/libopus/celt/bands.h
@@ -0,0 +1,120 @@
+/* Copyright (c) 2007-2008 CSIRO
+ Copyright (c) 2007-2009 Xiph.Org Foundation
+ Copyright (c) 2008-2009 Gregory Maxwell
+ Written by Jean-Marc Valin and Gregory Maxwell */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef BANDS_H
+#define BANDS_H
+
+#include "arch.h"
+#include "modes.h"
+#include "entenc.h"
+#include "entdec.h"
+#include "rate.h"
+
+/** Compute the amplitude (sqrt energy) in each of the bands
+ * @param m Mode data
+ * @param X Spectrum
+ * @param bandE Square root of the energy for each band (returned)
+ */
+void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int LM);
+
+/*void compute_noise_energies(const CELTMode *m, const celt_sig *X, const opus_val16 *tonality, celt_ener *bandE);*/
+
+/** Normalise each band of X such that the energy in each band is
+ equal to 1
+ * @param m Mode data
+ * @param X Spectrum (returned normalised)
+ * @param bandE Square root of the energy for each band
+ */
+void normalise_bands(const CELTMode *m, const celt_sig * OPUS_RESTRICT freq, celt_norm * OPUS_RESTRICT X, const celt_ener *bandE, int end, int C, int M);
+
+/** Denormalise each band of X to restore full amplitude
+ * @param m Mode data
+ * @param X Spectrum (returned de-normalised)
+ * @param bandE Square root of the energy for each band
+ */
+void denormalise_bands(const CELTMode *m, const celt_norm * OPUS_RESTRICT X,
+ celt_sig * OPUS_RESTRICT freq, const opus_val16 *bandE, int start,
+ int end, int M, int downsample, int silence);
+
+#define SPREAD_NONE (0)
+#define SPREAD_LIGHT (1)
+#define SPREAD_NORMAL (2)
+#define SPREAD_AGGRESSIVE (3)
+
+int spreading_decision(const CELTMode *m, const celt_norm *X, int *average,
+ int last_decision, int *hf_average, int *tapset_decision, int update_hf,
+ int end, int C, int M);
+
+#ifdef MEASURE_NORM_MSE
+void measure_norm_mse(const CELTMode *m, float *X, float *X0, float *bandE, float *bandE0, int M, int N, int C);
+#endif
+
+void haar1(celt_norm *X, int N0, int stride);
+
+/** Quantisation/encoding of the residual spectrum
+ * @param encode flag that indicates whether we're encoding (1) or decoding (0)
+ * @param m Mode data
+ * @param start First band to process
+ * @param end Last band to process + 1
+ * @param X Residual (normalised)
+ * @param Y Residual (normalised) for second channel (or NULL for mono)
+ * @param collapse_masks Anti-collapse tracking mask
+ * @param bandE Square root of the energy for each band
+ * @param pulses Bit allocation (per band) for PVQ
+ * @param shortBlocks Zero for long blocks, non-zero for short blocks
+ * @param spread Amount of spreading to use
+ * @param dual_stereo Zero for MS stereo, non-zero for dual stereo
+ * @param intensity First band to use intensity stereo
+ * @param tf_res Time-frequency resolution change
+ * @param total_bits Total number of bits that can be used for the frame (including the ones already spent)
+ * @param balance Number of unallocated bits
+ * @param en Entropy coder state
+ * @param LM log2() of the number of 2.5 subframes in the frame
+ * @param codedBands Last band to receive bits + 1
+ * @param seed Random generator seed
+ * @param arch Run-time architecture (see opus_select_arch())
+ */
+void quant_all_bands(int encode, const CELTMode *m, int start, int end,
+ celt_norm * X, celt_norm * Y, unsigned char *collapse_masks,
+ const celt_ener *bandE, int *pulses, int shortBlocks, int spread,
+ int dual_stereo, int intensity, int *tf_res, opus_int32 total_bits,
+ opus_int32 balance, ec_ctx *ec, int M, int codedBands, opus_uint32 *seed,
+ int arch);
+
+void anti_collapse(const CELTMode *m, celt_norm *X_,
+ unsigned char *collapse_masks, int LM, int C, int size, int start,
+ int end, const opus_val16 *logE, const opus_val16 *prev1logE,
+ const opus_val16 *prev2logE, const int *pulses, opus_uint32 seed,
+ int arch);
+
+opus_uint32 celt_lcg_rand(opus_uint32 seed);
+
+int hysteresis_decision(opus_val16 val, const opus_val16 *thresholds, const opus_val16 *hysteresis, int N, int prev);
+
+#endif /* BANDS_H */
diff --git a/libopus/celt/celt.c b/libopus/celt/celt.c
new file mode 100644
index 0000000..b121c51
--- /dev/null
+++ b/libopus/celt/celt.c
@@ -0,0 +1,299 @@
+/* Copyright (c) 2007-2008 CSIRO
+ Copyright (c) 2007-2010 Xiph.Org Foundation
+ Copyright (c) 2008 Gregory Maxwell
+ Written by Jean-Marc Valin and Gregory Maxwell */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define CELT_C
+
+#include "os_support.h"
+#include "mdct.h"
+#include <math.h>
+#include "celt.h"
+#include "pitch.h"
+#include "bands.h"
+#include "modes.h"
+#include "entcode.h"
+#include "quant_bands.h"
+#include "rate.h"
+#include "stack_alloc.h"
+#include "mathops.h"
+#include "float_cast.h"
+#include <stdarg.h>
+#include "celt_lpc.h"
+#include "vq.h"
+
+#ifndef PACKAGE_VERSION
+#define PACKAGE_VERSION "unknown"
+#endif
+
+#if defined(MIPSr1_ASM)
+#include "mips/celt_mipsr1.h"
+#endif
+
+
+int resampling_factor(opus_int32 rate)
+{
+ int ret;
+ switch (rate)
+ {
+ case 48000:
+ ret = 1;
+ break;
+ case 24000:
+ ret = 2;
+ break;
+ case 16000:
+ ret = 3;
+ break;
+ case 12000:
+ ret = 4;
+ break;
+ case 8000:
+ ret = 6;
+ break;
+ default:
+#ifndef CUSTOM_MODES
+ celt_assert(0);
+#endif
+ ret = 0;
+ break;
+ }
+ return ret;
+}
+
+#if !defined(OVERRIDE_COMB_FILTER_CONST) || defined(NON_STATIC_COMB_FILTER_CONST_C)
+/* This version should be faster on ARM */
+#ifdef OPUS_ARM_ASM
+#ifndef NON_STATIC_COMB_FILTER_CONST_C
+static
+#endif
+void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N,
+ opus_val16 g10, opus_val16 g11, opus_val16 g12)
+{
+ opus_val32 x0, x1, x2, x3, x4;
+ int i;
+ x4 = SHL32(x[-T-2], 1);
+ x3 = SHL32(x[-T-1], 1);
+ x2 = SHL32(x[-T], 1);
+ x1 = SHL32(x[-T+1], 1);
+ for (i=0;i<N-4;i+=5)
+ {
+ opus_val32 t;
+ x0=SHL32(x[i-T+2],1);
+ t = MAC16_32_Q16(x[i], g10, x2);
+ t = MAC16_32_Q16(t, g11, ADD32(x1,x3));
+ t = MAC16_32_Q16(t, g12, ADD32(x0,x4));
+ y[i] = t;
+ x4=SHL32(x[i-T+3],1);
+ t = MAC16_32_Q16(x[i+1], g10, x1);
+ t = MAC16_32_Q16(t, g11, ADD32(x0,x2));
+ t = MAC16_32_Q16(t, g12, ADD32(x4,x3));
+ y[i+1] = t;
+ x3=SHL32(x[i-T+4],1);
+ t = MAC16_32_Q16(x[i+2], g10, x0);
+ t = MAC16_32_Q16(t, g11, ADD32(x4,x1));
+ t = MAC16_32_Q16(t, g12, ADD32(x3,x2));
+ y[i+2] = t;
+ x2=SHL32(x[i-T+5],1);
+ t = MAC16_32_Q16(x[i+3], g10, x4);
+ t = MAC16_32_Q16(t, g11, ADD32(x3,x0));
+ t = MAC16_32_Q16(t, g12, ADD32(x2,x1));
+ y[i+3] = t;
+ x1=SHL32(x[i-T+6],1);
+ t = MAC16_32_Q16(x[i+4], g10, x3);
+ t = MAC16_32_Q16(t, g11, ADD32(x2,x4));
+ t = MAC16_32_Q16(t, g12, ADD32(x1,x0));
+ y[i+4] = t;
+ }
+#ifdef CUSTOM_MODES
+ for (;i<N;i++)
+ {
+ opus_val32 t;
+ x0=SHL32(x[i-T+2],1);
+ t = MAC16_32_Q16(x[i], g10, x2);
+ t = MAC16_32_Q16(t, g11, ADD32(x1,x3));
+ t = MAC16_32_Q16(t, g12, ADD32(x0,x4));
+ y[i] = t;
+ x4=x3;
+ x3=x2;
+ x2=x1;
+ x1=x0;
+ }
+#endif
+}
+#else
+#ifndef NON_STATIC_COMB_FILTER_CONST_C
+static
+#endif
+void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N,
+ opus_val16 g10, opus_val16 g11, opus_val16 g12)
+{
+ opus_val32 x0, x1, x2, x3, x4;
+ int i;
+ x4 = x[-T-2];
+ x3 = x[-T-1];
+ x2 = x[-T];
+ x1 = x[-T+1];
+ for (i=0;i<N;i++)
+ {
+ x0=x[i-T+2];
+ y[i] = x[i]
+ + MULT16_32_Q15(g10,x2)
+ + MULT16_32_Q15(g11,ADD32(x1,x3))
+ + MULT16_32_Q15(g12,ADD32(x0,x4));
+ x4=x3;
+ x3=x2;
+ x2=x1;
+ x1=x0;
+ }
+
+}
+#endif
+#endif
+
+#ifndef OVERRIDE_comb_filter
+void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
+ opus_val16 g0, opus_val16 g1, int tapset0, int tapset1,
+ const opus_val16 *window, int overlap, int arch)
+{
+ int i;
+ /* printf ("%d %d %f %f\n", T0, T1, g0, g1); */
+ opus_val16 g00, g01, g02, g10, g11, g12;
+ opus_val32 x0, x1, x2, x3, x4;
+ static const opus_val16 gains[3][3] = {
+ {QCONST16(0.3066406250f, 15), QCONST16(0.2170410156f, 15), QCONST16(0.1296386719f, 15)},
+ {QCONST16(0.4638671875f, 15), QCONST16(0.2680664062f, 15), QCONST16(0.f, 15)},
+ {QCONST16(0.7998046875f, 15), QCONST16(0.1000976562f, 15), QCONST16(0.f, 15)}};
+
+ if (g0==0 && g1==0)
+ {
+ /* OPT: Happens to work without the OPUS_MOVE(), but only because the current encoder already copies x to y */
+ if (x!=y)
+ OPUS_MOVE(y, x, N);
+ return;
+ }
+ g00 = MULT16_16_P15(g0, gains[tapset0][0]);
+ g01 = MULT16_16_P15(g0, gains[tapset0][1]);
+ g02 = MULT16_16_P15(g0, gains[tapset0][2]);
+ g10 = MULT16_16_P15(g1, gains[tapset1][0]);
+ g11 = MULT16_16_P15(g1, gains[tapset1][1]);
+ g12 = MULT16_16_P15(g1, gains[tapset1][2]);
+ x1 = x[-T1+1];
+ x2 = x[-T1 ];
+ x3 = x[-T1-1];
+ x4 = x[-T1-2];
+ /* If the filter didn't change, we don't need the overlap */
+ if (g0==g1 && T0==T1 && tapset0==tapset1)
+ overlap=0;
+ for (i=0;i<overlap;i++)
+ {
+ opus_val16 f;
+ x0=x[i-T1+2];
+ f = MULT16_16_Q15(window[i],window[i]);
+ y[i] = x[i]
+ + MULT16_32_Q15(MULT16_16_Q15((Q15ONE-f),g00),x[i-T0])
+ + MULT16_32_Q15(MULT16_16_Q15((Q15ONE-f),g01),ADD32(x[i-T0+1],x[i-T0-1]))
+ + MULT16_32_Q15(MULT16_16_Q15((Q15ONE-f),g02),ADD32(x[i-T0+2],x[i-T0-2]))
+ + MULT16_32_Q15(MULT16_16_Q15(f,g10),x2)
+ + MULT16_32_Q15(MULT16_16_Q15(f,g11),ADD32(x1,x3))
+ + MULT16_32_Q15(MULT16_16_Q15(f,g12),ADD32(x0,x4));
+ x4=x3;
+ x3=x2;
+ x2=x1;
+ x1=x0;
+
+ }
+ if (g1==0)
+ {
+ /* OPT: Happens to work without the OPUS_MOVE(), but only because the current encoder already copies x to y */
+ if (x!=y)
+ OPUS_MOVE(y+overlap, x+overlap, N-overlap);
+ return;
+ }
+
+ /* Compute the part with the constant filter. */
+ comb_filter_const(y+i, x+i, T1, N-i, g10, g11, g12, arch);
+}
+#endif /* OVERRIDE_comb_filter */
+
+const signed char tf_select_table[4][8] = {
+ {0, -1, 0, -1, 0,-1, 0,-1},
+ {0, -1, 0, -2, 1, 0, 1,-1},
+ {0, -2, 0, -3, 2, 0, 1,-1},
+ {0, -2, 0, -3, 3, 0, 1,-1},
+};
+
+
+void init_caps(const CELTMode *m,int *cap,int LM,int C)
+{
+ int i;
+ for (i=0;i<m->nbEBands;i++)
+ {
+ int N;
+ N=(m->eBands[i+1]-m->eBands[i])<<LM;
+ cap[i] = (m->cache.caps[m->nbEBands*(2*LM+C-1)+i]+64)*C*N>>2;
+ }
+}
+
+
+
+const char *opus_strerror(int error)
+{
+ static const char * const error_strings[8] = {
+ "success",
+ "invalid argument",
+ "buffer too small",
+ "internal error",
+ "corrupted stream",
+ "request not implemented",
+ "invalid state",
+ "memory allocation failed"
+ };
+ if (error > 0 || error < -7)
+ return "unknown error";
+ else
+ return error_strings[-error];
+}
+
+const char *opus_get_version_string(void)
+{
+ return "libopus " PACKAGE_VERSION
+ /* Applications may rely on the presence of this substring in the version
+ string to determine if they have a fixed-point or floating-point build
+ at runtime. */
+#ifdef FIXED_POINT
+ "-fixed"
+#endif
+#ifdef FUZZING
+ "-fuzzing"
+#endif
+ ;
+}
diff --git a/libopus/celt/celt.h b/libopus/celt/celt.h
new file mode 100644
index 0000000..d1f7eb6
--- /dev/null
+++ b/libopus/celt/celt.h
@@ -0,0 +1,229 @@
+/* Copyright (c) 2007-2008 CSIRO
+ Copyright (c) 2007-2009 Xiph.Org Foundation
+ Copyright (c) 2008 Gregory Maxwell
+ Written by Jean-Marc Valin and Gregory Maxwell */
+/**
+ @file celt.h
+ @brief Contains all the functions for encoding and decoding audio
+ */
+
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef CELT_H
+#define CELT_H
+
+#include "opus_types.h"
+#include "opus_defines.h"
+#include "opus_custom.h"
+#include "entenc.h"
+#include "entdec.h"
+#include "arch.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define CELTEncoder OpusCustomEncoder
+#define CELTDecoder OpusCustomDecoder
+#define CELTMode OpusCustomMode
+
+typedef struct {
+ int valid;
+ float tonality;
+ float tonality_slope;
+ float noisiness;
+ float activity;
+ float music_prob;
+ int bandwidth;
+}AnalysisInfo;
+
+#define __celt_check_mode_ptr_ptr(ptr) ((ptr) + ((ptr) - (const CELTMode**)(ptr)))
+
+#define __celt_check_analysis_ptr(ptr) ((ptr) + ((ptr) - (const AnalysisInfo*)(ptr)))
+
+/* Encoder/decoder Requests */
+
+/* Expose this option again when variable framesize actually works */
+#define OPUS_FRAMESIZE_VARIABLE 5010 /**< Optimize the frame size dynamically */
+
+
+#define CELT_SET_PREDICTION_REQUEST 10002
+/** Controls the use of interframe prediction.
+ 0=Independent frames
+ 1=Short term interframe prediction allowed
+ 2=Long term prediction allowed
+ */
+#define CELT_SET_PREDICTION(x) CELT_SET_PREDICTION_REQUEST, __opus_check_int(x)
+
+#define CELT_SET_INPUT_CLIPPING_REQUEST 10004
+#define CELT_SET_INPUT_CLIPPING(x) CELT_SET_INPUT_CLIPPING_REQUEST, __opus_check_int(x)
+
+#define CELT_GET_AND_CLEAR_ERROR_REQUEST 10007
+#define CELT_GET_AND_CLEAR_ERROR(x) CELT_GET_AND_CLEAR_ERROR_REQUEST, __opus_check_int_ptr(x)
+
+#define CELT_SET_CHANNELS_REQUEST 10008
+#define CELT_SET_CHANNELS(x) CELT_SET_CHANNELS_REQUEST, __opus_check_int(x)
+
+
+/* Internal */
+#define CELT_SET_START_BAND_REQUEST 10010
+#define CELT_SET_START_BAND(x) CELT_SET_START_BAND_REQUEST, __opus_check_int(x)
+
+#define CELT_SET_END_BAND_REQUEST 10012
+#define CELT_SET_END_BAND(x) CELT_SET_END_BAND_REQUEST, __opus_check_int(x)
+
+#define CELT_GET_MODE_REQUEST 10015
+/** Get the CELTMode used by an encoder or decoder */
+#define CELT_GET_MODE(x) CELT_GET_MODE_REQUEST, __celt_check_mode_ptr_ptr(x)
+
+#define CELT_SET_SIGNALLING_REQUEST 10016
+#define CELT_SET_SIGNALLING(x) CELT_SET_SIGNALLING_REQUEST, __opus_check_int(x)
+
+#define CELT_SET_TONALITY_REQUEST 10018
+#define CELT_SET_TONALITY(x) CELT_SET_TONALITY_REQUEST, __opus_check_int(x)
+#define CELT_SET_TONALITY_SLOPE_REQUEST 10020
+#define CELT_SET_TONALITY_SLOPE(x) CELT_SET_TONALITY_SLOPE_REQUEST, __opus_check_int(x)
+
+#define CELT_SET_ANALYSIS_REQUEST 10022
+#define CELT_SET_ANALYSIS(x) CELT_SET_ANALYSIS_REQUEST, __celt_check_analysis_ptr(x)
+
+#define OPUS_SET_LFE_REQUEST 10024
+#define OPUS_SET_LFE(x) OPUS_SET_LFE_REQUEST, __opus_check_int(x)
+
+#define OPUS_SET_ENERGY_MASK_REQUEST 10026
+#define OPUS_SET_ENERGY_MASK(x) OPUS_SET_ENERGY_MASK_REQUEST, __opus_check_val16_ptr(x)
+
+/* Encoder stuff */
+
+int celt_encoder_get_size(int channels);
+
+int celt_encode_with_ec(OpusCustomEncoder * OPUS_RESTRICT st, const opus_val16 * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc);
+
+int celt_encoder_init(CELTEncoder *st, opus_int32 sampling_rate, int channels,
+ int arch);
+
+
+
+/* Decoder stuff */
+
+int celt_decoder_get_size(int channels);
+
+
+int celt_decoder_init(CELTDecoder *st, opus_int32 sampling_rate, int channels);
+
+int celt_decode_with_ec(OpusCustomDecoder * OPUS_RESTRICT st, const unsigned char *data,
+ int len, opus_val16 * OPUS_RESTRICT pcm, int frame_size, ec_dec *dec, int accum);
+
+#define celt_encoder_ctl opus_custom_encoder_ctl
+#define celt_decoder_ctl opus_custom_decoder_ctl
+
+
+#ifdef CUSTOM_MODES
+#define OPUS_CUSTOM_NOSTATIC
+#else
+#define OPUS_CUSTOM_NOSTATIC static OPUS_INLINE
+#endif
+
+static const unsigned char trim_icdf[11] = {126, 124, 119, 109, 87, 41, 19, 9, 4, 2, 0};
+/* Probs: NONE: 21.875%, LIGHT: 6.25%, NORMAL: 65.625%, AGGRESSIVE: 6.25% */
+static const unsigned char spread_icdf[4] = {25, 23, 2, 0};
+
+static const unsigned char tapset_icdf[3]={2,1,0};
+
+#ifdef CUSTOM_MODES
+static const unsigned char toOpusTable[20] = {
+ 0xE0, 0xE8, 0xF0, 0xF8,
+ 0xC0, 0xC8, 0xD0, 0xD8,
+ 0xA0, 0xA8, 0xB0, 0xB8,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x80, 0x88, 0x90, 0x98,
+};
+
+static const unsigned char fromOpusTable[16] = {
+ 0x80, 0x88, 0x90, 0x98,
+ 0x40, 0x48, 0x50, 0x58,
+ 0x20, 0x28, 0x30, 0x38,
+ 0x00, 0x08, 0x10, 0x18
+};
+
+static OPUS_INLINE int toOpus(unsigned char c)
+{
+ int ret=0;
+ if (c<0xA0)
+ ret = toOpusTable[c>>3];
+ if (ret == 0)
+ return -1;
+ else
+ return ret|(c&0x7);
+}
+
+static OPUS_INLINE int fromOpus(unsigned char c)
+{
+ if (c<0x80)
+ return -1;
+ else
+ return fromOpusTable[(c>>3)-16] | (c&0x7);
+}
+#endif /* CUSTOM_MODES */
+
+#define COMBFILTER_MAXPERIOD 1024
+#define COMBFILTER_MINPERIOD 15
+
+extern const signed char tf_select_table[4][8];
+
+int resampling_factor(opus_int32 rate);
+
+void celt_preemphasis(const opus_val16 * OPUS_RESTRICT pcmp, celt_sig * OPUS_RESTRICT inp,
+ int N, int CC, int upsample, const opus_val16 *coef, celt_sig *mem, int clip);
+
+void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
+ opus_val16 g0, opus_val16 g1, int tapset0, int tapset1,
+ const opus_val16 *window, int overlap, int arch);
+
+#ifdef NON_STATIC_COMB_FILTER_CONST_C
+void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N,
+ opus_val16 g10, opus_val16 g11, opus_val16 g12);
+#endif
+
+#ifndef OVERRIDE_COMB_FILTER_CONST
+# define comb_filter_const(y, x, T, N, g10, g11, g12, arch) \
+ ((void)(arch),comb_filter_const_c(y, x, T, N, g10, g11, g12))
+#endif
+
+void init_caps(const CELTMode *m,int *cap,int LM,int C);
+
+#ifdef RESYNTH
+void deemphasis(celt_sig *in[], opus_val16 *pcm, int N, int C, int downsample, const opus_val16 *coef, celt_sig *mem);
+void celt_synthesis(const CELTMode *mode, celt_norm *X, celt_sig * out_syn[],
+ opus_val16 *oldBandE, int start, int effEnd, int C, int CC, int isTransient,
+ int LM, int downsample, int silence);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CELT_H */
diff --git a/libopus/celt/celt_decoder.c b/libopus/celt/celt_decoder.c
new file mode 100644
index 0000000..b978bb3
--- /dev/null
+++ b/libopus/celt/celt_decoder.c
@@ -0,0 +1,1248 @@
+/* Copyright (c) 2007-2008 CSIRO
+ Copyright (c) 2007-2010 Xiph.Org Foundation
+ Copyright (c) 2008 Gregory Maxwell
+ Written by Jean-Marc Valin and Gregory Maxwell */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define CELT_DECODER_C
+
+#include "cpu_support.h"
+#include "os_support.h"
+#include "mdct.h"
+#include <math.h>
+#include "celt.h"
+#include "pitch.h"
+#include "bands.h"
+#include "modes.h"
+#include "entcode.h"
+#include "quant_bands.h"
+#include "rate.h"
+#include "stack_alloc.h"
+#include "mathops.h"
+#include "float_cast.h"
+#include <stdarg.h>
+#include "celt_lpc.h"
+#include "vq.h"
+
+#if defined(SMALL_FOOTPRINT) && defined(FIXED_POINT)
+#define NORM_ALIASING_HACK
+#endif
+/**********************************************************************/
+/* */
+/* DECODER */
+/* */
+/**********************************************************************/
+#define DECODE_BUFFER_SIZE 2048
+
+/** Decoder state
+ @brief Decoder state
+ */
+struct OpusCustomDecoder {
+ const OpusCustomMode *mode;
+ int overlap;
+ int channels;
+ int stream_channels;
+
+ int downsample;
+ int start, end;
+ int signalling;
+ int arch;
+
+ /* Everything beyond this point gets cleared on a reset */
+#define DECODER_RESET_START rng
+
+ opus_uint32 rng;
+ int error;
+ int last_pitch_index;
+ int loss_count;
+ int skip_plc;
+ int postfilter_period;
+ int postfilter_period_old;
+ opus_val16 postfilter_gain;
+ opus_val16 postfilter_gain_old;
+ int postfilter_tapset;
+ int postfilter_tapset_old;
+
+ celt_sig preemph_memD[2];
+
+ celt_sig _decode_mem[1]; /* Size = channels*(DECODE_BUFFER_SIZE+mode->overlap) */
+ /* opus_val16 lpc[], Size = channels*LPC_ORDER */
+ /* opus_val16 oldEBands[], Size = 2*mode->nbEBands */
+ /* opus_val16 oldLogE[], Size = 2*mode->nbEBands */
+ /* opus_val16 oldLogE2[], Size = 2*mode->nbEBands */
+ /* opus_val16 backgroundLogE[], Size = 2*mode->nbEBands */
+};
+
+int celt_decoder_get_size(int channels)
+{
+ const CELTMode *mode = opus_custom_mode_create(48000, 960, NULL);
+ return opus_custom_decoder_get_size(mode, channels);
+}
+
+OPUS_CUSTOM_NOSTATIC int opus_custom_decoder_get_size(const CELTMode *mode, int channels)
+{
+ int size = sizeof(struct CELTDecoder)
+ + (channels*(DECODE_BUFFER_SIZE+mode->overlap)-1)*sizeof(celt_sig)
+ + channels*LPC_ORDER*sizeof(opus_val16)
+ + 4*2*mode->nbEBands*sizeof(opus_val16);
+ return size;
+}
+
+#ifdef CUSTOM_MODES
+CELTDecoder *opus_custom_decoder_create(const CELTMode *mode, int channels, int *error)
+{
+ int ret;
+ CELTDecoder *st = (CELTDecoder *)opus_alloc(opus_custom_decoder_get_size(mode, channels));
+ ret = opus_custom_decoder_init(st, mode, channels);
+ if (ret != OPUS_OK)
+ {
+ opus_custom_decoder_destroy(st);
+ st = NULL;
+ }
+ if (error)
+ *error = ret;
+ return st;
+}
+#endif /* CUSTOM_MODES */
+
+int celt_decoder_init(CELTDecoder *st, opus_int32 sampling_rate, int channels)
+{
+ int ret;
+ ret = opus_custom_decoder_init(st, opus_custom_mode_create(48000, 960, NULL), channels);
+ if (ret != OPUS_OK)
+ return ret;
+ st->downsample = resampling_factor(sampling_rate);
+ if (st->downsample==0)
+ return OPUS_BAD_ARG;
+ else
+ return OPUS_OK;
+}
+
+OPUS_CUSTOM_NOSTATIC int opus_custom_decoder_init(CELTDecoder *st, const CELTMode *mode, int channels)
+{
+ if (channels < 0 || channels > 2)
+ return OPUS_BAD_ARG;
+
+ if (st==NULL)
+ return OPUS_ALLOC_FAIL;
+
+ OPUS_CLEAR((char*)st, opus_custom_decoder_get_size(mode, channels));
+
+ st->mode = mode;
+ st->overlap = mode->overlap;
+ st->stream_channels = st->channels = channels;
+
+ st->downsample = 1;
+ st->start = 0;
+ st->end = st->mode->effEBands;
+ st->signalling = 1;
+ st->arch = opus_select_arch();
+
+ opus_custom_decoder_ctl(st, OPUS_RESET_STATE);
+
+ return OPUS_OK;
+}
+
+#ifdef CUSTOM_MODES
+void opus_custom_decoder_destroy(CELTDecoder *st)
+{
+ opus_free(st);
+}
+#endif /* CUSTOM_MODES */
+
+
+#ifndef RESYNTH
+static
+#endif
+void deemphasis(celt_sig *in[], opus_val16 *pcm, int N, int C, int downsample, const opus_val16 *coef,
+ celt_sig *mem, int accum)
+{
+ int c;
+ int Nd;
+ int apply_downsampling=0;
+ opus_val16 coef0;
+ VARDECL(celt_sig, scratch);
+ SAVE_STACK;
+#ifndef FIXED_POINT
+ (void)accum;
+ celt_assert(accum==0);
+#endif
+ ALLOC(scratch, N, celt_sig);
+ coef0 = coef[0];
+ Nd = N/downsample;
+ c=0; do {
+ int j;
+ celt_sig * OPUS_RESTRICT x;
+ opus_val16 * OPUS_RESTRICT y;
+ celt_sig m = mem[c];
+ x =in[c];
+ y = pcm+c;
+#ifdef CUSTOM_MODES
+ if (coef[1] != 0)
+ {
+ opus_val16 coef1 = coef[1];
+ opus_val16 coef3 = coef[3];
+ for (j=0;j<N;j++)
+ {
+ celt_sig tmp = x[j] + m + VERY_SMALL;
+ m = MULT16_32_Q15(coef0, tmp)
+ - MULT16_32_Q15(coef1, x[j]);
+ tmp = SHL32(MULT16_32_Q15(coef3, tmp), 2);
+ scratch[j] = tmp;
+ }
+ apply_downsampling=1;
+ } else
+#endif
+ if (downsample>1)
+ {
+ /* Shortcut for the standard (non-custom modes) case */
+ for (j=0;j<N;j++)
+ {
+ celt_sig tmp = x[j] + m + VERY_SMALL;
+ m = MULT16_32_Q15(coef0, tmp);
+ scratch[j] = tmp;
+ }
+ apply_downsampling=1;
+ } else {
+ /* Shortcut for the standard (non-custom modes) case */
+#ifdef FIXED_POINT
+ if (accum)
+ {
+ for (j=0;j<N;j++)
+ {
+ celt_sig tmp = x[j] + m + VERY_SMALL;
+ m = MULT16_32_Q15(coef0, tmp);
+ y[j*C] = SAT16(ADD32(y[j*C], SCALEOUT(SIG2WORD16(tmp))));
+ }
+ } else
+#endif
+ {
+ for (j=0;j<N;j++)
+ {
+ celt_sig tmp = x[j] + m + VERY_SMALL;
+ m = MULT16_32_Q15(coef0, tmp);
+ y[j*C] = SCALEOUT(SIG2WORD16(tmp));
+ }
+ }
+ }
+ mem[c] = m;
+
+ if (apply_downsampling)
+ {
+ /* Perform down-sampling */
+#ifdef FIXED_POINT
+ if (accum)
+ {
+ for (j=0;j<Nd;j++)
+ y[j*C] = SAT16(ADD32(y[j*C], SCALEOUT(SIG2WORD16(scratch[j*downsample]))));
+ } else
+#endif
+ {
+ for (j=0;j<Nd;j++)
+ y[j*C] = SCALEOUT(SIG2WORD16(scratch[j*downsample]));
+ }
+ }
+ } while (++c<C);
+ RESTORE_STACK;
+}
+
+#ifndef RESYNTH
+static
+#endif
+void celt_synthesis(const CELTMode *mode, celt_norm *X, celt_sig * out_syn[],
+ opus_val16 *oldBandE, int start, int effEnd, int C, int CC,
+ int isTransient, int LM, int downsample,
+ int silence, int arch)
+{
+ int c, i;
+ int M;
+ int b;
+ int B;
+ int N, NB;
+ int shift;
+ int nbEBands;
+ int overlap;
+ VARDECL(celt_sig, freq);
+ SAVE_STACK;
+
+ overlap = mode->overlap;
+ nbEBands = mode->nbEBands;
+ N = mode->shortMdctSize<<LM;
+ ALLOC(freq, N, celt_sig); /**< Interleaved signal MDCTs */
+ M = 1<<LM;
+
+ if (isTransient)
+ {
+ B = M;
+ NB = mode->shortMdctSize;
+ shift = mode->maxLM;
+ } else {
+ B = 1;
+ NB = mode->shortMdctSize<<LM;
+ shift = mode->maxLM-LM;
+ }
+
+ if (CC==2&&C==1)
+ {
+ /* Copying a mono streams to two channels */
+ celt_sig *freq2;
+ denormalise_bands(mode, X, freq, oldBandE, start, effEnd, M,
+ downsample, silence);
+ /* Store a temporary copy in the output buffer because the IMDCT destroys its input. */
+ freq2 = out_syn[1]+overlap/2;
+ OPUS_COPY(freq2, freq, N);
+ for (b=0;b<B;b++)
+ clt_mdct_backward(&mode->mdct, &freq2[b], out_syn[0]+NB*b, mode->window, overlap, shift, B, arch);
+ for (b=0;b<B;b++)
+ clt_mdct_backward(&mode->mdct, &freq[b], out_syn[1]+NB*b, mode->window, overlap, shift, B, arch);
+ } else if (CC==1&&C==2)
+ {
+ /* Downmixing a stereo stream to mono */
+ celt_sig *freq2;
+ freq2 = out_syn[0]+overlap/2;
+ denormalise_bands(mode, X, freq, oldBandE, start, effEnd, M,
+ downsample, silence);
+ /* Use the output buffer as temp array before downmixing. */
+ denormalise_bands(mode, X+N, freq2, oldBandE+nbEBands, start, effEnd, M,
+ downsample, silence);
+ for (i=0;i<N;i++)
+ freq[i] = HALF32(ADD32(freq[i],freq2[i]));
+ for (b=0;b<B;b++)
+ clt_mdct_backward(&mode->mdct, &freq[b], out_syn[0]+NB*b, mode->window, overlap, shift, B, arch);
+ } else {
+ /* Normal case (mono or stereo) */
+ c=0; do {
+ denormalise_bands(mode, X+c*N, freq, oldBandE+c*nbEBands, start, effEnd, M,
+ downsample, silence);
+ for (b=0;b<B;b++)
+ clt_mdct_backward(&mode->mdct, &freq[b], out_syn[c]+NB*b, mode->window, overlap, shift, B, arch);
+ } while (++c<CC);
+ }
+ RESTORE_STACK;
+}
+
+static void tf_decode(int start, int end, int isTransient, int *tf_res, int LM, ec_dec *dec)
+{
+ int i, curr, tf_select;
+ int tf_select_rsv;
+ int tf_changed;
+ int logp;
+ opus_uint32 budget;
+ opus_uint32 tell;
+
+ budget = dec->storage*8;
+ tell = ec_tell(dec);
+ logp = isTransient ? 2 : 4;
+ tf_select_rsv = LM>0 && tell+logp+1<=budget;
+ budget -= tf_select_rsv;
+ tf_changed = curr = 0;
+ for (i=start;i<end;i++)
+ {
+ if (tell+logp<=budget)
+ {
+ curr ^= ec_dec_bit_logp(dec, logp);
+ tell = ec_tell(dec);
+ tf_changed |= curr;
+ }
+ tf_res[i] = curr;
+ logp = isTransient ? 4 : 5;
+ }
+ tf_select = 0;
+ if (tf_select_rsv &&
+ tf_select_table[LM][4*isTransient+0+tf_changed] !=
+ tf_select_table[LM][4*isTransient+2+tf_changed])
+ {
+ tf_select = ec_dec_bit_logp(dec, 1);
+ }
+ for (i=start;i<end;i++)
+ {
+ tf_res[i] = tf_select_table[LM][4*isTransient+2*tf_select+tf_res[i]];
+ }
+}
+
+/* The maximum pitch lag to allow in the pitch-based PLC. It's possible to save
+ CPU time in the PLC pitch search by making this smaller than MAX_PERIOD. The
+ current value corresponds to a pitch of 66.67 Hz. */
+#define PLC_PITCH_LAG_MAX (720)
+/* The minimum pitch lag to allow in the pitch-based PLC. This corresponds to a
+ pitch of 480 Hz. */
+#define PLC_PITCH_LAG_MIN (100)
+
+static int celt_plc_pitch_search(celt_sig *decode_mem[2], int C, int arch)
+{
+ int pitch_index;
+ VARDECL( opus_val16, lp_pitch_buf );
+ SAVE_STACK;
+ ALLOC( lp_pitch_buf, DECODE_BUFFER_SIZE>>1, opus_val16 );
+ pitch_downsample(decode_mem, lp_pitch_buf,
+ DECODE_BUFFER_SIZE, C, arch);
+ pitch_search(lp_pitch_buf+(PLC_PITCH_LAG_MAX>>1), lp_pitch_buf,
+ DECODE_BUFFER_SIZE-PLC_PITCH_LAG_MAX,
+ PLC_PITCH_LAG_MAX-PLC_PITCH_LAG_MIN, &pitch_index, arch);
+ pitch_index = PLC_PITCH_LAG_MAX-pitch_index;
+ RESTORE_STACK;
+ return pitch_index;
+}
+
+static void celt_decode_lost(CELTDecoder * OPUS_RESTRICT st, int N, int LM)
+{
+ int c;
+ int i;
+ const int C = st->channels;
+ celt_sig *decode_mem[2];
+ celt_sig *out_syn[2];
+ opus_val16 *lpc;
+ opus_val16 *oldBandE, *oldLogE, *oldLogE2, *backgroundLogE;
+ const OpusCustomMode *mode;
+ int nbEBands;
+ int overlap;
+ int start;
+ int loss_count;
+ int noise_based;
+ const opus_int16 *eBands;
+ SAVE_STACK;
+
+ mode = st->mode;
+ nbEBands = mode->nbEBands;
+ overlap = mode->overlap;
+ eBands = mode->eBands;
+
+ c=0; do {
+ decode_mem[c] = st->_decode_mem + c*(DECODE_BUFFER_SIZE+overlap);
+ out_syn[c] = decode_mem[c]+DECODE_BUFFER_SIZE-N;
+ } while (++c<C);
+ lpc = (opus_val16*)(st->_decode_mem+(DECODE_BUFFER_SIZE+overlap)*C);
+ oldBandE = lpc+C*LPC_ORDER;
+ oldLogE = oldBandE + 2*nbEBands;
+ oldLogE2 = oldLogE + 2*nbEBands;
+ backgroundLogE = oldLogE2 + 2*nbEBands;
+
+ loss_count = st->loss_count;
+ start = st->start;
+ noise_based = loss_count >= 5 || start != 0 || st->skip_plc;
+ if (noise_based)
+ {
+ /* Noise-based PLC/CNG */
+#ifdef NORM_ALIASING_HACK
+ celt_norm *X;
+#else
+ VARDECL(celt_norm, X);
+#endif
+ opus_uint32 seed;
+ int end;
+ int effEnd;
+ opus_val16 decay;
+ end = st->end;
+ effEnd = IMAX(start, IMIN(end, mode->effEBands));
+
+#ifdef NORM_ALIASING_HACK
+ /* This is an ugly hack that breaks aliasing rules and would be easily broken,
+ but it saves almost 4kB of stack. */
+ X = (celt_norm*)(out_syn[C-1]+overlap/2);
+#else
+ ALLOC(X, C*N, celt_norm); /**< Interleaved normalised MDCTs */
+#endif
+
+ /* Energy decay */
+ decay = loss_count==0 ? QCONST16(1.5f, DB_SHIFT) : QCONST16(.5f, DB_SHIFT);
+ c=0; do
+ {
+ for (i=start;i<end;i++)
+ oldBandE[c*nbEBands+i] = MAX16(backgroundLogE[c*nbEBands+i], oldBandE[c*nbEBands+i] - decay);
+ } while (++c<C);
+ seed = st->rng;
+ for (c=0;c<C;c++)
+ {
+ for (i=start;i<effEnd;i++)
+ {
+ int j;
+ int boffs;
+ int blen;
+ boffs = N*c+(eBands[i]<<LM);
+ blen = (eBands[i+1]-eBands[i])<<LM;
+ for (j=0;j<blen;j++)
+ {
+ seed = celt_lcg_rand(seed);
+ X[boffs+j] = (celt_norm)((opus_int32)seed>>20);
+ }
+ renormalise_vector(X+boffs, blen, Q15ONE, st->arch);
+ }
+ }
+ st->rng = seed;
+
+ c=0; do {
+ OPUS_MOVE(decode_mem[c], decode_mem[c]+N,
+ DECODE_BUFFER_SIZE-N+(overlap>>1));
+ } while (++c<C);
+
+ celt_synthesis(mode, X, out_syn, oldBandE, start, effEnd, C, C, 0, LM, st->downsample, 0, st->arch);
+ } else {
+ /* Pitch-based PLC */
+ const opus_val16 *window;
+ opus_val16 fade = Q15ONE;
+ int pitch_index;
+ VARDECL(opus_val32, etmp);
+ VARDECL(opus_val16, exc);
+
+ if (loss_count == 0)
+ {
+ st->last_pitch_index = pitch_index = celt_plc_pitch_search(decode_mem, C, st->arch);
+ } else {
+ pitch_index = st->last_pitch_index;
+ fade = QCONST16(.8f,15);
+ }
+
+ ALLOC(etmp, overlap, opus_val32);
+ ALLOC(exc, MAX_PERIOD, opus_val16);
+ window = mode->window;
+ c=0; do {
+ opus_val16 decay;
+ opus_val16 attenuation;
+ opus_val32 S1=0;
+ celt_sig *buf;
+ int extrapolation_offset;
+ int extrapolation_len;
+ int exc_length;
+ int j;
+
+ buf = decode_mem[c];
+ for (i=0;i<MAX_PERIOD;i++) {
+ exc[i] = ROUND16(buf[DECODE_BUFFER_SIZE-MAX_PERIOD+i], SIG_SHIFT);
+ }
+
+ if (loss_count == 0)
+ {
+ opus_val32 ac[LPC_ORDER+1];
+ /* Compute LPC coefficients for the last MAX_PERIOD samples before
+ the first loss so we can work in the excitation-filter domain. */
+ _celt_autocorr(exc, ac, window, overlap,
+ LPC_ORDER, MAX_PERIOD, st->arch);
+ /* Add a noise floor of -40 dB. */
+#ifdef FIXED_POINT
+ ac[0] += SHR32(ac[0],13);
+#else
+ ac[0] *= 1.0001f;
+#endif
+ /* Use lag windowing to stabilize the Levinson-Durbin recursion. */
+ for (i=1;i<=LPC_ORDER;i++)
+ {
+ /*ac[i] *= exp(-.5*(2*M_PI*.002*i)*(2*M_PI*.002*i));*/
+#ifdef FIXED_POINT
+ ac[i] -= MULT16_32_Q15(2*i*i, ac[i]);
+#else
+ ac[i] -= ac[i]*(0.008f*0.008f)*i*i;
+#endif
+ }
+ _celt_lpc(lpc+c*LPC_ORDER, ac, LPC_ORDER);
+ }
+ /* We want the excitation for 2 pitch periods in order to look for a
+ decaying signal, but we can't get more than MAX_PERIOD. */
+ exc_length = IMIN(2*pitch_index, MAX_PERIOD);
+ /* Initialize the LPC history with the samples just before the start
+ of the region for which we're computing the excitation. */
+ {
+ opus_val16 lpc_mem[LPC_ORDER];
+ for (i=0;i<LPC_ORDER;i++)
+ {
+ lpc_mem[i] =
+ ROUND16(buf[DECODE_BUFFER_SIZE-exc_length-1-i], SIG_SHIFT);
+ }
+ /* Compute the excitation for exc_length samples before the loss. */
+ celt_fir(exc+MAX_PERIOD-exc_length, lpc+c*LPC_ORDER,
+ exc+MAX_PERIOD-exc_length, exc_length, LPC_ORDER, lpc_mem, st->arch);
+ }
+
+ /* Check if the waveform is decaying, and if so how fast.
+ We do this to avoid adding energy when concealing in a segment
+ with decaying energy. */
+ {
+ opus_val32 E1=1, E2=1;
+ int decay_length;
+#ifdef FIXED_POINT
+ int shift = IMAX(0,2*celt_zlog2(celt_maxabs16(&exc[MAX_PERIOD-exc_length], exc_length))-20);
+#endif
+ decay_length = exc_length>>1;
+ for (i=0;i<decay_length;i++)
+ {
+ opus_val16 e;
+ e = exc[MAX_PERIOD-decay_length+i];
+ E1 += SHR32(MULT16_16(e, e), shift);
+ e = exc[MAX_PERIOD-2*decay_length+i];
+ E2 += SHR32(MULT16_16(e, e), shift);
+ }
+ E1 = MIN32(E1, E2);
+ decay = celt_sqrt(frac_div32(SHR32(E1, 1), E2));
+ }
+
+ /* Move the decoder memory one frame to the left to give us room to
+ add the data for the new frame. We ignore the overlap that extends
+ past the end of the buffer, because we aren't going to use it. */
+ OPUS_MOVE(buf, buf+N, DECODE_BUFFER_SIZE-N);
+
+ /* Extrapolate from the end of the excitation with a period of
+ "pitch_index", scaling down each period by an additional factor of
+ "decay". */
+ extrapolation_offset = MAX_PERIOD-pitch_index;
+ /* We need to extrapolate enough samples to cover a complete MDCT
+ window (including overlap/2 samples on both sides). */
+ extrapolation_len = N+overlap;
+ /* We also apply fading if this is not the first loss. */
+ attenuation = MULT16_16_Q15(fade, decay);
+ for (i=j=0;i<extrapolation_len;i++,j++)
+ {
+ opus_val16 tmp;
+ if (j >= pitch_index) {
+ j -= pitch_index;
+ attenuation = MULT16_16_Q15(attenuation, decay);
+ }
+ buf[DECODE_BUFFER_SIZE-N+i] =
+ SHL32(EXTEND32(MULT16_16_Q15(attenuation,
+ exc[extrapolation_offset+j])), SIG_SHIFT);
+ /* Compute the energy of the previously decoded signal whose
+ excitation we're copying. */
+ tmp = ROUND16(
+ buf[DECODE_BUFFER_SIZE-MAX_PERIOD-N+extrapolation_offset+j],
+ SIG_SHIFT);
+ S1 += SHR32(MULT16_16(tmp, tmp), 8);
+ }
+
+ {
+ opus_val16 lpc_mem[LPC_ORDER];
+ /* Copy the last decoded samples (prior to the overlap region) to
+ synthesis filter memory so we can have a continuous signal. */
+ for (i=0;i<LPC_ORDER;i++)
+ lpc_mem[i] = ROUND16(buf[DECODE_BUFFER_SIZE-N-1-i], SIG_SHIFT);
+ /* Apply the synthesis filter to convert the excitation back into
+ the signal domain. */
+ celt_iir(buf+DECODE_BUFFER_SIZE-N, lpc+c*LPC_ORDER,
+ buf+DECODE_BUFFER_SIZE-N, extrapolation_len, LPC_ORDER,
+ lpc_mem, st->arch);
+ }
+
+ /* Check if the synthesis energy is higher than expected, which can
+ happen with the signal changes during our window. If so,
+ attenuate. */
+ {
+ opus_val32 S2=0;
+ for (i=0;i<extrapolation_len;i++)
+ {
+ opus_val16 tmp = ROUND16(buf[DECODE_BUFFER_SIZE-N+i], SIG_SHIFT);
+ S2 += SHR32(MULT16_16(tmp, tmp), 8);
+ }
+ /* This checks for an "explosion" in the synthesis. */
+#ifdef FIXED_POINT
+ if (!(S1 > SHR32(S2,2)))
+#else
+ /* The float test is written this way to catch NaNs in the output
+ of the IIR filter at the same time. */
+ if (!(S1 > 0.2f*S2))
+#endif
+ {
+ for (i=0;i<extrapolation_len;i++)
+ buf[DECODE_BUFFER_SIZE-N+i] = 0;
+ } else if (S1 < S2)
+ {
+ opus_val16 ratio = celt_sqrt(frac_div32(SHR32(S1,1)+1,S2+1));
+ for (i=0;i<overlap;i++)
+ {
+ opus_val16 tmp_g = Q15ONE
+ - MULT16_16_Q15(window[i], Q15ONE-ratio);
+ buf[DECODE_BUFFER_SIZE-N+i] =
+ MULT16_32_Q15(tmp_g, buf[DECODE_BUFFER_SIZE-N+i]);
+ }
+ for (i=overlap;i<extrapolation_len;i++)
+ {
+ buf[DECODE_BUFFER_SIZE-N+i] =
+ MULT16_32_Q15(ratio, buf[DECODE_BUFFER_SIZE-N+i]);
+ }
+ }
+ }
+
+ /* Apply the pre-filter to the MDCT overlap for the next frame because
+ the post-filter will be re-applied in the decoder after the MDCT
+ overlap. */
+ comb_filter(etmp, buf+DECODE_BUFFER_SIZE,
+ st->postfilter_period, st->postfilter_period, overlap,
+ -st->postfilter_gain, -st->postfilter_gain,
+ st->postfilter_tapset, st->postfilter_tapset, NULL, 0, st->arch);
+
+ /* Simulate TDAC on the concealed audio so that it blends with the
+ MDCT of the next frame. */
+ for (i=0;i<overlap/2;i++)
+ {
+ buf[DECODE_BUFFER_SIZE+i] =
+ MULT16_32_Q15(window[i], etmp[overlap-1-i])
+ + MULT16_32_Q15(window[overlap-i-1], etmp[i]);
+ }
+ } while (++c<C);
+ }
+
+ st->loss_count = loss_count+1;
+
+ RESTORE_STACK;
+}
+
+int celt_decode_with_ec(CELTDecoder * OPUS_RESTRICT st, const unsigned char *data,
+ int len, opus_val16 * OPUS_RESTRICT pcm, int frame_size, ec_dec *dec, int accum)
+{
+ int c, i, N;
+ int spread_decision;
+ opus_int32 bits;
+ ec_dec _dec;
+#ifdef NORM_ALIASING_HACK
+ celt_norm *X;
+#else
+ VARDECL(celt_norm, X);
+#endif
+ VARDECL(int, fine_quant);
+ VARDECL(int, pulses);
+ VARDECL(int, cap);
+ VARDECL(int, offsets);
+ VARDECL(int, fine_priority);
+ VARDECL(int, tf_res);
+ VARDECL(unsigned char, collapse_masks);
+ celt_sig *decode_mem[2];
+ celt_sig *out_syn[2];
+ opus_val16 *lpc;
+ opus_val16 *oldBandE, *oldLogE, *oldLogE2, *backgroundLogE;
+
+ int shortBlocks;
+ int isTransient;
+ int intra_ener;
+ const int CC = st->channels;
+ int LM, M;
+ int start;
+ int end;
+ int effEnd;
+ int codedBands;
+ int alloc_trim;
+ int postfilter_pitch;
+ opus_val16 postfilter_gain;
+ int intensity=0;
+ int dual_stereo=0;
+ opus_int32 total_bits;
+ opus_int32 balance;
+ opus_int32 tell;
+ int dynalloc_logp;
+ int postfilter_tapset;
+ int anti_collapse_rsv;
+ int anti_collapse_on=0;
+ int silence;
+ int C = st->stream_channels;
+ const OpusCustomMode *mode;
+ int nbEBands;
+ int overlap;
+ const opus_int16 *eBands;
+ ALLOC_STACK;
+
+ mode = st->mode;
+ nbEBands = mode->nbEBands;
+ overlap = mode->overlap;
+ eBands = mode->eBands;
+ start = st->start;
+ end = st->end;
+ frame_size *= st->downsample;
+
+ lpc = (opus_val16*)(st->_decode_mem+(DECODE_BUFFER_SIZE+overlap)*CC);
+ oldBandE = lpc+CC*LPC_ORDER;
+ oldLogE = oldBandE + 2*nbEBands;
+ oldLogE2 = oldLogE + 2*nbEBands;
+ backgroundLogE = oldLogE2 + 2*nbEBands;
+
+#ifdef CUSTOM_MODES
+ if (st->signalling && data!=NULL)
+ {
+ int data0=data[0];
+ /* Convert "standard mode" to Opus header */
+ if (mode->Fs==48000 && mode->shortMdctSize==120)
+ {
+ data0 = fromOpus(data0);
+ if (data0<0)
+ return OPUS_INVALID_PACKET;
+ }
+ st->end = end = IMAX(1, mode->effEBands-2*(data0>>5));
+ LM = (data0>>3)&0x3;
+ C = 1 + ((data0>>2)&0x1);
+ data++;
+ len--;
+ if (LM>mode->maxLM)
+ return OPUS_INVALID_PACKET;
+ if (frame_size < mode->shortMdctSize<<LM)
+ return OPUS_BUFFER_TOO_SMALL;
+ else
+ frame_size = mode->shortMdctSize<<LM;
+ } else {
+#else
+ {
+#endif
+ for (LM=0;LM<=mode->maxLM;LM++)
+ if (mode->shortMdctSize<<LM==frame_size)
+ break;
+ if (LM>mode->maxLM)
+ return OPUS_BAD_ARG;
+ }
+ M=1<<LM;
+
+ if (len<0 || len>1275 || pcm==NULL)
+ return OPUS_BAD_ARG;
+
+ N = M*mode->shortMdctSize;
+ c=0; do {
+ decode_mem[c] = st->_decode_mem + c*(DECODE_BUFFER_SIZE+overlap);
+ out_syn[c] = decode_mem[c]+DECODE_BUFFER_SIZE-N;
+ } while (++c<CC);
+
+ effEnd = end;
+ if (effEnd > mode->effEBands)
+ effEnd = mode->effEBands;
+
+ if (data == NULL || len<=1)
+ {
+ celt_decode_lost(st, N, LM);
+ deemphasis(out_syn, pcm, N, CC, st->downsample, mode->preemph, st->preemph_memD, accum);
+ RESTORE_STACK;
+ return frame_size/st->downsample;
+ }
+
+ /* Check if there are at least two packets received consecutively before
+ * turning on the pitch-based PLC */
+ st->skip_plc = st->loss_count != 0;
+
+ if (dec == NULL)
+ {
+ ec_dec_init(&_dec,(unsigned char*)data,len);
+ dec = &_dec;
+ }
+
+ if (C==1)
+ {
+ for (i=0;i<nbEBands;i++)
+ oldBandE[i]=MAX16(oldBandE[i],oldBandE[nbEBands+i]);
+ }
+
+ total_bits = len*8;
+ tell = ec_tell(dec);
+
+ if (tell >= total_bits)
+ silence = 1;
+ else if (tell==1)
+ silence = ec_dec_bit_logp(dec, 15);
+ else
+ silence = 0;
+ if (silence)
+ {
+ /* Pretend we've read all the remaining bits */
+ tell = len*8;
+ dec->nbits_total+=tell-ec_tell(dec);
+ }
+
+ postfilter_gain = 0;
+ postfilter_pitch = 0;
+ postfilter_tapset = 0;
+ if (start==0 && tell+16 <= total_bits)
+ {
+ if(ec_dec_bit_logp(dec, 1))
+ {
+ int qg, octave;
+ octave = ec_dec_uint(dec, 6);
+ postfilter_pitch = (16<<octave)+ec_dec_bits(dec, 4+octave)-1;
+ qg = ec_dec_bits(dec, 3);
+ if (ec_tell(dec)+2<=total_bits)
+ postfilter_tapset = ec_dec_icdf(dec, tapset_icdf, 2);
+ postfilter_gain = QCONST16(.09375f,15)*(qg+1);
+ }
+ tell = ec_tell(dec);
+ }
+
+ if (LM > 0 && tell+3 <= total_bits)
+ {
+ isTransient = ec_dec_bit_logp(dec, 3);
+ tell = ec_tell(dec);
+ }
+ else
+ isTransient = 0;
+
+ if (isTransient)
+ shortBlocks = M;
+ else
+ shortBlocks = 0;
+
+ /* Decode the global flags (first symbols in the stream) */
+ intra_ener = tell+3<=total_bits ? ec_dec_bit_logp(dec, 3) : 0;
+ /* Get band energies */
+ unquant_coarse_energy(mode, start, end, oldBandE,
+ intra_ener, dec, C, LM);
+
+ ALLOC(tf_res, nbEBands, int);
+ tf_decode(start, end, isTransient, tf_res, LM, dec);
+
+ tell = ec_tell(dec);
+ spread_decision = SPREAD_NORMAL;
+ if (tell+4 <= total_bits)
+ spread_decision = ec_dec_icdf(dec, spread_icdf, 5);
+
+ ALLOC(cap, nbEBands, int);
+
+ init_caps(mode,cap,LM,C);
+
+ ALLOC(offsets, nbEBands, int);
+
+ dynalloc_logp = 6;
+ total_bits<<=BITRES;
+ tell = ec_tell_frac(dec);
+ for (i=start;i<end;i++)
+ {
+ int width, quanta;
+ int dynalloc_loop_logp;
+ int boost;
+ width = C*(eBands[i+1]-eBands[i])<<LM;
+ /* quanta is 6 bits, but no more than 1 bit/sample
+ and no less than 1/8 bit/sample */
+ quanta = IMIN(width<<BITRES, IMAX(6<<BITRES, width));
+ dynalloc_loop_logp = dynalloc_logp;
+ boost = 0;
+ while (tell+(dynalloc_loop_logp<<BITRES) < total_bits && boost < cap[i])
+ {
+ int flag;
+ flag = ec_dec_bit_logp(dec, dynalloc_loop_logp);
+ tell = ec_tell_frac(dec);
+ if (!flag)
+ break;
+ boost += quanta;
+ total_bits -= quanta;
+ dynalloc_loop_logp = 1;
+ }
+ offsets[i] = boost;
+ /* Making dynalloc more likely */
+ if (boost>0)
+ dynalloc_logp = IMAX(2, dynalloc_logp-1);
+ }
+
+ ALLOC(fine_quant, nbEBands, int);
+ alloc_trim = tell+(6<<BITRES) <= total_bits ?
+ ec_dec_icdf(dec, trim_icdf, 7) : 5;
+
+ bits = (((opus_int32)len*8)<<BITRES) - ec_tell_frac(dec) - 1;
+ anti_collapse_rsv = isTransient&&LM>=2&&bits>=((LM+2)<<BITRES) ? (1<<BITRES) : 0;
+ bits -= anti_collapse_rsv;
+
+ ALLOC(pulses, nbEBands, int);
+ ALLOC(fine_priority, nbEBands, int);
+
+ codedBands = compute_allocation(mode, start, end, offsets, cap,
+ alloc_trim, &intensity, &dual_stereo, bits, &balance, pulses,
+ fine_quant, fine_priority, C, LM, dec, 0, 0, 0);
+
+ unquant_fine_energy(mode, start, end, oldBandE, fine_quant, dec, C);
+
+ c=0; do {
+ OPUS_MOVE(decode_mem[c], decode_mem[c]+N, DECODE_BUFFER_SIZE-N+overlap/2);
+ } while (++c<CC);
+
+ /* Decode fixed codebook */
+ ALLOC(collapse_masks, C*nbEBands, unsigned char);
+
+#ifdef NORM_ALIASING_HACK
+ /* This is an ugly hack that breaks aliasing rules and would be easily broken,
+ but it saves almost 4kB of stack. */
+ X = (celt_norm*)(out_syn[CC-1]+overlap/2);
+#else
+ ALLOC(X, C*N, celt_norm); /**< Interleaved normalised MDCTs */
+#endif
+
+ quant_all_bands(0, mode, start, end, X, C==2 ? X+N : NULL, collapse_masks,
+ NULL, pulses, shortBlocks, spread_decision, dual_stereo, intensity, tf_res,
+ len*(8<<BITRES)-anti_collapse_rsv, balance, dec, LM, codedBands, &st->rng, st->arch);
+
+ if (anti_collapse_rsv > 0)
+ {
+ anti_collapse_on = ec_dec_bits(dec, 1);
+ }
+
+ unquant_energy_finalise(mode, start, end, oldBandE,
+ fine_quant, fine_priority, len*8-ec_tell(dec), dec, C);
+
+ if (anti_collapse_on)
+ anti_collapse(mode, X, collapse_masks, LM, C, N,
+ start, end, oldBandE, oldLogE, oldLogE2, pulses, st->rng, st->arch);
+
+ if (silence)
+ {
+ for (i=0;i<C*nbEBands;i++)
+ oldBandE[i] = -QCONST16(28.f,DB_SHIFT);
+ }
+
+ celt_synthesis(mode, X, out_syn, oldBandE, start, effEnd,
+ C, CC, isTransient, LM, st->downsample, silence, st->arch);
+
+ c=0; do {
+ st->postfilter_period=IMAX(st->postfilter_period, COMBFILTER_MINPERIOD);
+ st->postfilter_period_old=IMAX(st->postfilter_period_old, COMBFILTER_MINPERIOD);
+ comb_filter(out_syn[c], out_syn[c], st->postfilter_period_old, st->postfilter_period, mode->shortMdctSize,
+ st->postfilter_gain_old, st->postfilter_gain, st->postfilter_tapset_old, st->postfilter_tapset,
+ mode->window, overlap, st->arch);
+ if (LM!=0)
+ comb_filter(out_syn[c]+mode->shortMdctSize, out_syn[c]+mode->shortMdctSize, st->postfilter_period, postfilter_pitch, N-mode->shortMdctSize,
+ st->postfilter_gain, postfilter_gain, st->postfilter_tapset, postfilter_tapset,
+ mode->window, overlap, st->arch);
+
+ } while (++c<CC);
+ st->postfilter_period_old = st->postfilter_period;
+ st->postfilter_gain_old = st->postfilter_gain;
+ st->postfilter_tapset_old = st->postfilter_tapset;
+ st->postfilter_period = postfilter_pitch;
+ st->postfilter_gain = postfilter_gain;
+ st->postfilter_tapset = postfilter_tapset;
+ if (LM!=0)
+ {
+ st->postfilter_period_old = st->postfilter_period;
+ st->postfilter_gain_old = st->postfilter_gain;
+ st->postfilter_tapset_old = st->postfilter_tapset;
+ }
+
+ if (C==1)
+ OPUS_COPY(&oldBandE[nbEBands], oldBandE, nbEBands);
+
+ /* In case start or end were to change */
+ if (!isTransient)
+ {
+ opus_val16 max_background_increase;
+ OPUS_COPY(oldLogE2, oldLogE, 2*nbEBands);
+ OPUS_COPY(oldLogE, oldBandE, 2*nbEBands);
+ /* In normal circumstances, we only allow the noise floor to increase by
+ up to 2.4 dB/second, but when we're in DTX, we allow up to 6 dB
+ increase for each update.*/
+ if (st->loss_count < 10)
+ max_background_increase = M*QCONST16(0.001f,DB_SHIFT);
+ else
+ max_background_increase = QCONST16(1.f,DB_SHIFT);
+ for (i=0;i<2*nbEBands;i++)
+ backgroundLogE[i] = MIN16(backgroundLogE[i] + max_background_increase, oldBandE[i]);
+ } else {
+ for (i=0;i<2*nbEBands;i++)
+ oldLogE[i] = MIN16(oldLogE[i], oldBandE[i]);
+ }
+ c=0; do
+ {
+ for (i=0;i<start;i++)
+ {
+ oldBandE[c*nbEBands+i]=0;
+ oldLogE[c*nbEBands+i]=oldLogE2[c*nbEBands+i]=-QCONST16(28.f,DB_SHIFT);
+ }
+ for (i=end;i<nbEBands;i++)
+ {
+ oldBandE[c*nbEBands+i]=0;
+ oldLogE[c*nbEBands+i]=oldLogE2[c*nbEBands+i]=-QCONST16(28.f,DB_SHIFT);
+ }
+ } while (++c<2);
+ st->rng = dec->rng;
+
+ deemphasis(out_syn, pcm, N, CC, st->downsample, mode->preemph, st->preemph_memD, accum);
+ st->loss_count = 0;
+ RESTORE_STACK;
+ if (ec_tell(dec) > 8*len)
+ return OPUS_INTERNAL_ERROR;
+ if(ec_get_error(dec))
+ st->error = 1;
+ return frame_size/st->downsample;
+}
+
+
+#ifdef CUSTOM_MODES
+
+#ifdef FIXED_POINT
+int opus_custom_decode(CELTDecoder * OPUS_RESTRICT st, const unsigned char *data, int len, opus_int16 * OPUS_RESTRICT pcm, int frame_size)
+{
+ return celt_decode_with_ec(st, data, len, pcm, frame_size, NULL, 0);
+}
+
+#ifndef DISABLE_FLOAT_API
+int opus_custom_decode_float(CELTDecoder * OPUS_RESTRICT st, const unsigned char *data, int len, float * OPUS_RESTRICT pcm, int frame_size)
+{
+ int j, ret, C, N;
+ VARDECL(opus_int16, out);
+ ALLOC_STACK;
+
+ if (pcm==NULL)
+ return OPUS_BAD_ARG;
+
+ C = st->channels;
+ N = frame_size;
+
+ ALLOC(out, C*N, opus_int16);
+ ret=celt_decode_with_ec(st, data, len, out, frame_size, NULL, 0);
+ if (ret>0)
+ for (j=0;j<C*ret;j++)
+ pcm[j]=out[j]*(1.f/32768.f);
+
+ RESTORE_STACK;
+ return ret;
+}
+#endif /* DISABLE_FLOAT_API */
+
+#else
+
+int opus_custom_decode_float(CELTDecoder * OPUS_RESTRICT st, const unsigned char *data, int len, float * OPUS_RESTRICT pcm, int frame_size)
+{
+ return celt_decode_with_ec(st, data, len, pcm, frame_size, NULL, 0);
+}
+
+int opus_custom_decode(CELTDecoder * OPUS_RESTRICT st, const unsigned char *data, int len, opus_int16 * OPUS_RESTRICT pcm, int frame_size)
+{
+ int j, ret, C, N;
+ VARDECL(celt_sig, out);
+ ALLOC_STACK;
+
+ if (pcm==NULL)
+ return OPUS_BAD_ARG;
+
+ C = st->channels;
+ N = frame_size;
+ ALLOC(out, C*N, celt_sig);
+
+ ret=celt_decode_with_ec(st, data, len, out, frame_size, NULL, 0);
+
+ if (ret>0)
+ for (j=0;j<C*ret;j++)
+ pcm[j] = FLOAT2INT16 (out[j]);
+
+ RESTORE_STACK;
+ return ret;
+}
+
+#endif
+#endif /* CUSTOM_MODES */
+
+int opus_custom_decoder_ctl(CELTDecoder * OPUS_RESTRICT st, int request, ...)
+{
+ va_list ap;
+
+ va_start(ap, request);
+ switch (request)
+ {
+ case CELT_SET_START_BAND_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value<0 || value>=st->mode->nbEBands)
+ goto bad_arg;
+ st->start = value;
+ }
+ break;
+ case CELT_SET_END_BAND_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value<1 || value>st->mode->nbEBands)
+ goto bad_arg;
+ st->end = value;
+ }
+ break;
+ case CELT_SET_CHANNELS_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ if (value<1 || value>2)
+ goto bad_arg;
+ st->stream_channels = value;
+ }
+ break;
+ case CELT_GET_AND_CLEAR_ERROR_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (value==NULL)
+ goto bad_arg;
+ *value=st->error;
+ st->error = 0;
+ }
+ break;
+ case OPUS_GET_LOOKAHEAD_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (value==NULL)
+ goto bad_arg;
+ *value = st->overlap/st->downsample;
+ }
+ break;
+ case OPUS_RESET_STATE:
+ {
+ int i;
+ opus_val16 *lpc, *oldBandE, *oldLogE, *oldLogE2;
+ lpc = (opus_val16*)(st->_decode_mem+(DECODE_BUFFER_SIZE+st->overlap)*st->channels);
+ oldBandE = lpc+st->channels*LPC_ORDER;
+ oldLogE = oldBandE + 2*st->mode->nbEBands;
+ oldLogE2 = oldLogE + 2*st->mode->nbEBands;
+ OPUS_CLEAR((char*)&st->DECODER_RESET_START,
+ opus_custom_decoder_get_size(st->mode, st->channels)-
+ ((char*)&st->DECODER_RESET_START - (char*)st));
+ for (i=0;i<2*st->mode->nbEBands;i++)
+ oldLogE[i]=oldLogE2[i]=-QCONST16(28.f,DB_SHIFT);
+ st->skip_plc = 1;
+ }
+ break;
+ case OPUS_GET_PITCH_REQUEST:
+ {
+ opus_int32 *value = va_arg(ap, opus_int32*);
+ if (value==NULL)
+ goto bad_arg;
+ *value = st->postfilter_period;
+ }
+ break;
+ case CELT_GET_MODE_REQUEST:
+ {
+ const CELTMode ** value = va_arg(ap, const CELTMode**);
+ if (value==0)
+ goto bad_arg;
+ *value=st->mode;
+ }
+ break;
+ case CELT_SET_SIGNALLING_REQUEST:
+ {
+ opus_int32 value = va_arg(ap, opus_int32);
+ st->signalling = value;
+ }
+ break;
+ case OPUS_GET_FINAL_RANGE_REQUEST:
+ {
+ opus_uint32 * value = va_arg(ap, opus_uint32 *);
+ if (value==0)
+ goto bad_arg;
+ *value=st->rng;
+ }
+ break;
+ default:
+ goto bad_request;
+ }
+ va_end(ap);
+ return OPUS_OK;
+bad_arg:
+ va_end(ap);
+ return OPUS_BAD_ARG;
+bad_request:
+ va_end(ap);
+ return OPUS_UNIMPLEMENTED;
+}
diff --git a/libopus/celt/celt_encoder.c b/libopus/celt/celt_encoder.c
new file mode 100644
index 0000000..3ee7a4d
--- /dev/null
+++ b/libopus/celt/celt_encoder.c
@@ -0,0 +1,2410 @@
+/* Copyright (c) 2007-2008 CSIRO
+ Copyright (c) 2007-2010 Xiph.Org Foundation
+ Copyright (c) 2008 Gregory Maxwell
+ Written by Jean-Marc Valin and Gregory Maxwell */
+/*
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define CELT_ENCODER_C
+
+#include "cpu_support.h"
+#include "os_support.h"
+#include "mdct.h"
+#include <math.h>
+#include "celt.h"
+#include "pitch.h"
+#include "bands.h"
+#include "modes.h"
+#include "entcode.h"
+#include "quant_bands.h"
+#include "rate.h"
+#include "stack_alloc.h"
+#include "mathops.h"
+#include "float_cast.h"
+#include <stdarg.h>
+#include "celt_lpc.h"
+#include "vq.h"
+
+
+/** Encoder state
+ @brief Encoder state
+ */
+struct OpusCustomEncoder {
+ const OpusCustomMode *mode; /**< Mode used by the encoder */
+ int channels;
+ int stream_channels;
+
+ int force_intra;
+ int clip;
+ int disable_pf;
+ int complexity;
+ int upsample;
+ int start, end;
+
+ opus_int32 bitrate;
+ int vbr;
+ int signalling;
+ int constrained_vbr; /* If zero, VBR can do whatever it likes with the rate */
+ int loss_rate;
+ int lsb_depth;
+ int variable_duration;
+ int lfe;
+ int arch;
+
+ /* Everything beyond this point gets cleared on a reset */
+#define ENCODER_RESET_START rng
+
+ opus_uint32 rng;
+ int spread_decision;
+ opus_val32 delayedIntra;
+ int tonal_average;
+ int lastCodedBands;
+ int hf_average;
+ int tapset_decision;
+
+ int prefilter_period;
+ opus_val16 prefilter_gain;
+ int prefilter_tapset;
+#ifdef RESYNTH
+ int prefilter_period_old;
+ opus_val16 prefilter_gain_old;
+ int prefilter_tapset_old;
+#endif
+ int consec_transient;
+ AnalysisInfo analysis;
+
+ opus_val32 preemph_memE[2];
+ opus_val32 preemph_memD[2];
+
+ /* VBR-related parameters */
+ opus_int32 vbr_reservoir;
+ opus_int32 vbr_drift;
+ opus_int32 vbr_offset;
+ opus_int32 vbr_count;
+ opus_val32 overlap_max;
+ opus_val16 stereo_saving;
+ int intensity;
+ opus_val16 *energy_mask;
+ opus_val16 spec_avg;
+
+#ifdef RESYNTH
+ /* +MAX_PERIOD/2 to make space for overlap */
+ celt_sig syn_mem[2][2*MAX_PERIOD+MAX_PERIOD/2];
+#endif
+
+ celt_sig in_mem[1]; /* Size = channels*mode->overlap */
+ /* celt_sig prefilter_mem[], Size = channels*COMBFILTER_MAXPERIOD */
+ /* opus_val16 oldBandE[], Size = channels*mode->nbEBands */
+ /* opus_val16 oldLogE[], Size = channels*mode->nbEBands */
+ /* opus_val16 oldLogE2[], Size = channels*mode->nbEBands */
+};
+
+int celt_encoder_get_size(int channels)
+{
+ CELTMode *mode = opus_custom_mode_create(48000, 960, NULL);
+ return opus_custom_encoder_get_size(mode, channels);
+}
+
+OPUS_CUSTOM_NOSTATIC int opus_custom_encoder_get_size(const CELTMode *mode, int channels)
+{
+ int size = sizeof(struct CELTEncoder)
+ + (channels*mode->overlap-1)*sizeof(celt_sig) /* celt_sig in_mem[channels*mode->overlap]; */
+ + channels*COMBFILTER_MAXPERIOD*sizeof(celt_sig) /* celt_sig prefilter_mem[channels*COMBFILTER_MAXPERIOD]; */
+ + 3*channels*mode->nbEBands*sizeof(opus_val16); /* opus_val16 oldBandE[channels*mode->nbEBands]; */
+ /* opus_val16 oldLogE[channels*mode->nbEBands]; */
+ /* opus_val16 oldLogE2[channels*mode->nbEBands]; */
+ return size;
+}
+
+#ifdef CUSTOM_MODES
+CELTEncoder *opus_custom_encoder_create(const CELTMode *mode, int channels, int *error)
+{
+ int ret;
+ CELTEncoder *st = (CELTEncoder *)opus_alloc(opus_custom_encoder_get_size(mode, channels));
+ /* init will handle the NULL case */
+ ret = opus_custom_encoder_init(st, mode, channels);
+ if (ret != OPUS_OK)
+ {
+ opus_custom_encoder_destroy(st);
+ st = NULL;
+ }
+ if (error)
+ *error = ret;
+ return st;
+}
+#endif /* CUSTOM_MODES */
+
+static int opus_custom_encoder_init_arch(CELTEncoder *st, const CELTMode *mode,
+ int channels, int arch)
+{
+ if (channels < 0 || channels > 2)
+ return OPUS_BAD_ARG;
+
+ if (st==NULL || mode==NULL)
+ return OPUS_ALLOC_FAIL;
+
+ OPUS_CLEAR((char*)st, opus_custom_encoder_get_size(mode, channels));
+
+ st->mode = mode;
+ st->stream_channels = st->channels = channels;
+
+ st->upsample = 1;
+ st->start = 0;
+ st->end = st->mode->effEBands;
+ st->signalling = 1;
+
+ st->arch = arch;
+
+ st->constrained_vbr = 1;
+ st->clip = 1;
+
+ st->bitrate = OPUS_BITRATE_MAX;
+ st->vbr = 0;
+ st->force_intra = 0;
+ st->complexity = 5;
+ st->lsb_depth=24;
+
+ opus_custom_encoder_ctl(st, OPUS_RESET_STATE);
+
+ return OPUS_OK;
+}
+
+#ifdef CUSTOM_MODES
+int opus_custom_encoder_init(CELTEncoder *st, const CELTMode *mode, int channels)
+{
+ return opus_custom_encoder_init_arch(st, mode, channels, opus_select_arch());
+}
+#endif
+
+int celt_encoder_init(CELTEncoder *st, opus_int32 sampling_rate, int channels,
+ int arch)
+{
+ int ret;
+ ret = opus_custom_encoder_init_arch(st,
+ opus_custom_mode_create(48000, 960, NULL), channels, arch);
+ if (ret != OPUS_OK)
+ return ret;
+ st->upsample = resampling_factor(sampling_rate);
+ return OPUS_OK;
+}
+
+#ifdef CUSTOM_MODES
+void opus_custom_encoder_destroy(CELTEncoder *st)
+{
+ opus_free(st);
+}
+#endif /* CUSTOM_MODES */
+
+
+static int transient_analysis(const opus_val32 * OPUS_RESTRICT in, int len, int C,
+ opus_val16 *tf_estimate, int *tf_chan)
+{
+ int i;
+ VARDECL(opus_val16, tmp);
+ opus_val32 mem0,mem1;
+ int is_transient = 0;
+ opus_int32 mask_metric = 0;
+ int c;
+ opus_val16 tf_max;
+ int len2;
+ /* Table of 6*64/x, trained on real data to minimize the average error */
+ static const unsigned char inv_table[128] = {
+ 255,255,156,110, 86, 70, 59, 51, 45, 40, 37, 33, 31, 28, 26, 25,
+ 23, 22, 21, 20, 19, 18, 17, 16, 16, 15, 15, 14, 13, 13, 12, 12,
+ 12, 12, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8,
+ 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2,
+ };
+ SAVE_STACK;
+ ALLOC(tmp, len, opus_val16);
+
+ len2=len/2;
+ for (c=0;c<C;c++)
+ {
+ opus_val32 mean;
+ opus_int32 unmask=0;
+ opus_val32 norm;
+ opus_val16 maxE;
+ mem0=0;
+ mem1=0;
+ /* High-pass filter: (1 - 2*z^-1 + z^-2) / (1 - z^-1 + .5*z^-2) */
+ for (i=0;i<len;i++)
+ {
+ opus_val32 x,y;
+ x = SHR32(in[i+c*len],SIG_SHIFT);
+ y = ADD32(mem0, x);
+#ifdef FIXED_POINT
+ mem0 = mem1 + y - SHL32(x,1);
+ mem1 = x - SHR32(y,1);
+#else
+ mem0 = mem1 + y - 2*x;
+ mem1 = x - .5f*y;
+#endif
+ tmp[i] = EXTRACT16(SHR32(y,2));
+ /*printf("%f ", tmp[i]);*/
+ }
+ /*printf("\n");*/
+ /* First few samples are bad because we don't propagate the memory */
+ OPUS_CLEAR(tmp, 12);
+
+#ifdef FIXED_POINT
+ /* Normalize tmp to max range */
+ {
+ int shift=0;
+ shift = 14-celt_ilog2(1+celt_maxabs16(tmp, len));
+ if (shift!=0)
+ {
+ for (i=0;i<len;i++)
+ tmp[i] = SHL16(tmp[i], shift);
+ }
+ }
+#endif
+
+ mean=0;
+ mem0=0;
+ /* Grouping by two to reduce complexity */
+ /* Forward pass to compute the post-echo threshold*/
+ for (i=0;i<len2;i++)
+ {
+ opus_val16 x2 = PSHR32(MULT16_16(tmp[2*i],tmp[2*i]) + MULT16_16(tmp[2*i+1],tmp[2*i+1]),16);
+ mean += x2;
+#ifdef FIXED_POINT
+ /* FIXME: Use PSHR16() instead */
+ tmp[i] = mem0 + PSHR32(x2-mem0,4);
+#else
+ tmp[i] = mem0 + MULT16_16_P15(QCONST16(.0625f,15),x2-mem0);
+#endif
+ mem0 = tmp[i];
+ }
+
+ mem0=0;
+ maxE=0;
+ /* Backward pass to compute the pre-echo threshold */
+ for (i=len2-1;i>=0;i--)
+ {
+#ifdef FIXED_POINT
+ /* FIXME: Use PSHR16() instead */
+ tmp[i] = mem0 + PSHR32(tmp[i]-mem0,3);
+#else
+ tmp[i] = mem0 + MULT16_16_P15(QCONST16(0.125f,15),tmp[i]-mem0);
+#endif
+ mem0 = tmp[i];
+ maxE = MAX16(maxE, mem0);
+ }
+ /*for (i=0;i<len2;i++)printf("%f ", tmp[i]/mean);printf("\n");*/
+
+ /* Compute the ratio of the "frame energy" over the harmonic mean of the energy.
+ This essentially corresponds to a bitrate-normalized temporal noise-to-mask
+ ratio */
+
+ /* As a compromise with the old transient detector, frame energy is the
+ geometric mean of the energy and half the max */
+#ifdef FIXED_POINT
+ /* Costs two sqrt() to avoid overflows */
+ mean = MULT16_16(celt_sqrt(mean), celt_sqrt(MULT16_16(maxE,len2>>1)));
+#else
+ mean = celt_sqrt(mean * maxE*.5*len2);
+#endif
+ /* Inverse of the mean energy in Q15+6 */
+ norm = SHL32(EXTEND32(len2),6+14)/ADD32(EPSILON,SHR32(mean,1));
+ /* Compute harmonic mean discarding the unreliable boundaries
+ The data is smooth, so we only take 1/4th of the samples */
+ unmask=0;
+ for (i=12;i<len2-5;i+=4)
+ {
+ int id;
+#ifdef FIXED_POINT
+ id = MAX32(0,MIN32(127,MULT16_32_Q15(tmp[i]+EPSILON,norm))); /* Do not round to nearest */
+#else
+ id = (int)MAX32(0,MIN32(127,floor(64*norm*(tmp[i]+EPSILON)))); /* Do not round to nearest */
+#endif
+ unmask += inv_table[id];
+ }
+ /*printf("%d\n", unmask);*/
+ /* Normalize, compensate for the 1/4th of the sample and the factor of 6 in the inverse table */
+ unmask = 64*unmask*4/(6*(len2-17));
+ if (unmask>mask_metric)
+ {
+ *tf_chan = c;
+ mask_metric = unmask;
+ }
+ }
+ is_transient = mask_metric>200;
+
+ /* Arbitrary metric for VBR boost */
+ tf_max = MAX16(0,celt_sqrt(27*mask_metric)-42);
+ /* *tf_estimate = 1 + MIN16(1, sqrt(MAX16(0, tf_max-30))/20); */
+ *tf_estimate = celt_sqrt(MAX32(0, SHL32(MULT16_16(QCONST16(0.0069,14),MIN16(163,tf_max)),14)-QCONST32(0.139,28)));
+ /*printf("%d %f\n", tf_max, mask_metric);*/
+ RESTORE_STACK;
+#ifdef FUZZING
+ is_transient = rand()&0x1;
+#endif
+ /*printf("%d %f %d\n", is_transient, (float)*tf_estimate, tf_max);*/
+ return is_transient;
+}
+
+/* Looks for sudden increases of energy to decide whether we need to patch
+ the transient decision */
+static int patch_transient_decision(opus_val16 *newE, opus_val16 *oldE, int nbEBands,
+ int start, int end, int C)
+{
+ int i, c;
+ opus_val32 mean_diff=0;
+ opus_val16 spread_old[26];
+ /* Apply an aggressive (-6 dB/Bark) spreading function to the old frame to
+ avoid false detection caused by irrelevant bands */
+ if (C==1)
+ {
+ spread_old[start] = oldE[start];
+ for (i=start+1;i<end;i++)
+ spread_old[i] = MAX16(spread_old[i-1]-QCONST16(1.0f, DB_SHIFT), oldE[i]);
+ } else {
+ spread_old[start] = MAX16(oldE[start],oldE[start+nbEBands]);
+ for (i=start+1;i<end;i++)
+ spread_old[i] = MAX16(spread_old[i-1]-QCONST16(1.0f, DB_SHIFT),
+ MAX16(oldE[i],oldE[i+nbEBands]));
+ }
+ for (i=end-2;i>=start;i--)
+ spread_old[i] = MAX16(spread_old[i], spread_old[i+1]-QCONST16(1.0f, DB_SHIFT));
+ /* Compute mean increase */
+ c=0; do {
+ for (i=IMAX(2,start);i<end-1;i++)
+ {
+ opus_val16 x1, x2;
+ x1 = MAX16(0, newE[i + c*nbEBands]);
+ x2 = MAX16(0, spread_old[i]);
+ mean_diff = ADD32(mean_diff, EXTEND32(MAX16(0, SUB16(x1, x2))));
+ }
+ } while (++c<C);
+ mean_diff = DIV32(mean_diff, C*(end-1-IMAX(2,start)));
+ /*printf("%f %f %d\n", mean_diff, max_diff, count);*/
+ return mean_diff > QCONST16(1.f, DB_SHIFT);
+}
+
+/** Apply window and compute the MDCT for all sub-frames and
+ all channels in a frame */
+static void compute_mdcts(const CELTMode *mode, int shortBlocks, celt_sig * OPUS_RESTRICT in,
+ celt_sig * OPUS_RESTRICT out, int C, int CC, int LM, int upsample,
+ int arch)
+{
+ const int overlap = mode->overlap;
+ int N;
+ int B;
+ int shift;
+ int i, b, c;
+ if (shortBlocks)
+ {
+ B = shortBlocks;
+ N = mode->shortMdctSize;
+ shift = mode->maxLM;
+ } else {
+ B = 1;
+ N = mode->shortMdctSize<<LM;
+ shift = mode->maxLM-LM;
+ }
+ c=0; do {
+ for (b=0;b<B;b++)
+ {
+ /* Interleaving the sub-frames while doing the MDCTs */
+ clt_mdct_forward(&mode->mdct, in+c*(B*N+overlap)+b*N,
+ &out[b+c*N*B], mode->window, overlap, shift, B,
+ arch);
+ }
+ } while (++c<CC);
+ if (CC==2&&C==1)
+ {
+ for (i=0;i<B*N;i++)
+ out[i] = ADD32(HALF32(out[i]), HALF32(out[B*N+i]));
+ }
+ if (upsample != 1)
+ {
+ c=0; do
+ {
+ int bound = B*N/upsample;
+ for (i=0;i<bound;i++)
+ out[c*B*N+i] *= upsample;
+ OPUS_CLEAR(&out[c*B*N+bound], B*N-bound);
+ } while (++c<C);
+ }
+}
+
+
+void celt_preemphasis(const opus_val16 * OPUS_RESTRICT pcmp, celt_sig * OPUS_RESTRICT inp,
+ int N, int CC, int upsample, const opus_val16 *coef, celt_sig *mem, int clip)
+{
+ int i;
+ opus_val16 coef0;
+ celt_sig m;
+ int Nu;
+
+ coef0 = coef[0];
+ m = *mem;
+
+ /* Fast path for the normal 48kHz case and no clipping */
+ if (coef[1] == 0 && upsample == 1 && !clip)
+ {
+ for (i=0;i<N;i++)
+ {
+ opus_val16 x;
+ x = SCALEIN(pcmp[CC*i]);
+ /* Apply pre-emphasis */
+ inp[i] = SHL32(x, SIG_SHIFT) - m;
+ m = SHR32(MULT16_16(coef0, x), 15-SIG_SHIFT);
+ }
+ *mem = m;
+ return;
+ }
+
+ Nu = N/upsample;
+ if (upsample!=1)
+ {
+ OPUS_CLEAR(inp, N);
+ }
+ for (i=0;i<Nu;i++)
+ inp[i*upsample] = SCALEIN(pcmp[CC*i]);
+
+#ifndef FIXED_POINT
+ if (clip)
+ {
+ /* Clip input to avoid encoding non-portable files */
+ for (i=0;i<Nu;i++)
+ inp[i*upsample] = MAX32(-65536.f, MIN32(65536.f,inp[i*upsample]));
+ }
+#else
+ (void)clip; /* Avoids a warning about clip being unused. */
+#endif
+#ifdef CUSTOM_MODES
+ if (coef[1] != 0)
+ {
+ opus_val16 coef1 = coef[1];
+ opus_val16 coef2 = coef[2];
+ for (i=0;i<N;i++)
+ {
+ celt_sig x, tmp;
+ x = inp[i];
+ /* Apply pre-emphasis */
+ tmp = MULT16_16(coef2, x);
+ inp[i] = tmp + m;
+ m = MULT16_32_Q15(coef1, inp[i]) - MULT16_32_Q15(coef0, tmp);
+ }
+ } else
+#endif
+ {
+ for (i=0;i<N;i++)
+ {
+ opus_val16 x;
+ x = inp[i];
+ /* Apply pre-emphasis */
+ inp[i] = SHL32(x, SIG_SHIFT) - m;
+ m = SHR32(MULT16_16(coef0, x), 15-SIG_SHIFT);
+ }
+ }
+ *mem = m;
+}
+
+
+
+static opus_val32 l1_metric(const celt_norm *tmp, int N, int LM, opus_val16 bias)
+{
+ int i;
+ opus_val32 L1;
+ L1 = 0;
+ for (i=0;i<N;i++)
+ L1 += EXTEND32(ABS16(tmp[i]));
+ /* When in doubt, prefer good freq resolution */
+ L1 = MAC16_32_Q15(L1, LM*bias, L1);
+ return L1;
+
+}
+
+static int tf_analysis(const CELTMode *m, int len, int isTransient,
+ int *tf_res, int lambda, celt_norm *X, int N0, int LM,
+ int *tf_sum, opus_val16 tf_estimate, int tf_chan)
+{
+ int i;
+ VARDECL(int, metric);
+ int cost0;
+ int cost1;
+ VARDECL(int, path0);
+ VARDECL(int, path1);
+ VARDECL(celt_norm, tmp);
+ VARDECL(celt_norm, tmp_1);
+ int sel;
+ int selcost[2];
+ int tf_select=0;
+ opus_val16 bias;
+
+ SAVE_STACK;
+ bias = MULT16_16_Q14(QCONST16(.04f,15), MAX16(-QCONST16(.25f,14), QCONST16(.5f,14)-tf_estimate));
+ /*printf("%f ", bias);*/
+
+ ALLOC(metric, len, int);
+ ALLOC(tmp, (m->eBands[len]-m->eBands[len-1])<<LM, celt_norm);
+ ALLOC(tmp_1, (m->eBands[len]-m->eBands[len-1])<<LM, celt_norm);
+ ALLOC(path0, len, int);
+ ALLOC(path1, len, int);
+
+ *tf_sum = 0;
+ for (i=0;i<len;i++)
+ {
+ int k, N;
+ int narrow;
+ opus_val32 L1, best_L1;
+ int best_level=0;
+ N = (m->eBands[i+1]-m->eBands[i])<<LM;
+ /* band is too narrow to be split down to LM=-1 */
+ narrow = (m->eBands[i+1]-m->eBands[i])==1;
+ OPUS_COPY(tmp, &X[tf_chan*N0 + (m->eBands[i]<<LM)], N);
+ /* Just add the right channel if we're in stereo */
+ /*if (C==2)
+ for (j=0;j<N;j++)
+ tmp[j] = ADD16(SHR16(tmp[j], 1),SHR16(X[N0+j+(m->eBands[i]<<LM)], 1));*/
+ L1 = l1_metric(tmp, N, isTransient ? LM : 0, bias);
+ best_L1 = L1;
+ /* Check the -1 case for transients */
+ if (isTransient && !narrow)
+ {
+ OPUS_COPY(tmp_1, tmp, N);
+ haar1(tmp_1, N>>LM, 1<<LM);
+ L1 = l1_metric(tmp_1, N, LM+1, bias);
+ if (L1<best_L1)
+ {
+ best_L1 = L1;
+ best_level = -1;
+ }
+ }
+ /*printf ("%f ", L1);*/
+ for (k=0;k<LM+!(isTransient||narrow);k++)
+ {
+ int B;
+
+ if (isTransient)
+ B = (LM-k-1);
+ else
+ B = k+1;
+
+ haar1(tmp, N>>k, 1<<k);
+
+ L1 = l1_metric(tmp, N, B, bias);
+
+ if (L1 < best_L1)
+ {
+ best_L1 = L1;
+ best_level = k+1;
+ }
+ }
+ /*printf ("%d ", isTransient ? LM-best_level : best_level);*/
+ /* metric is in Q1 to be able to select the mid-point (-0.5) for narrower bands */
+ if (isTransient)
+ metric[i] = 2*best_level;
+ else
+ metric[i] = -2*best_level;
+ *tf_sum += (isTransient ? LM : 0) - metric[i]/2;
+ /* For bands that can't be split to -1, set the metric to the half-way point to avoid
+ biasing the decision */
+ if (narrow && (metric[i]==0 || metric[i]==-2*LM))
+ metric[i]-=1;
+ /*printf("%d ", metric[i]);*/
+ }
+ /*printf("\n");*/
+ /* Search for the optimal tf resolution, including tf_select */
+ tf_select = 0;
+ for (sel=0;sel<2;sel++)
+ {
+ cost0 = 0;
+ cost1 = isTransient ? 0 : lambda;
+ for (i=1;i<len;i++)
+ {
+ int curr0, curr1;
+ curr0 = IMIN(cost0, cost1 + lambda);
+ curr1 = IMIN(cost0 + lambda, cost1);
+ cost0 = curr0 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*sel+0]);
+ cost1 = curr1 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*sel+1]);
+ }
+ cost0 = IMIN(cost0, cost1);
+ selcost[sel]=cost0;
+ }
+ /* For now, we're conservative and only allow tf_select=1 for transients.
+ * If tests confirm it's useful for non-transients, we could allow it. */
+ if (selcost[1]<selcost[0] && isTransient)
+ tf_select=1;
+ cost0 = 0;
+ cost1 = isTransient ? 0 : lambda;
+ /* Viterbi forward pass */
+ for (i=1;i<len;i++)
+ {
+ int curr0, curr1;
+ int from0, from1;
+
+ from0 = cost0;
+ from1 = cost1 + lambda;
+ if (from0 < from1)
+ {
+ curr0 = from0;
+ path0[i]= 0;
+ } else {
+ curr0 = from1;
+ path0[i]= 1;
+ }
+
+ from0 = cost0 + lambda;
+ from1 = cost1;
+ if (from0 < from1)
+ {
+ curr1 = from0;
+ path1[i]= 0;
+ } else {
+ curr1 = from1;
+ path1[i]= 1;
+ }
+ cost0 = curr0 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*tf_select+0]);
+ cost1 = curr1 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*tf_select+1]);
+ }
+ tf_res[len-1] = cost0 < cost1 ? 0 : 1;
+ /* Viterbi backward pass to check the decisions */
+ for (i=len-2;i>=0;i--)
+ {
+ if (tf_res[i+1] == 1)
+ tf_res[i] = path1[i+1];
+ else
+ tf_res[i] = path0[i+1];
+ }
+ /*printf("%d %f\n", *tf_sum, tf_estimate);*/
+ RESTORE_STACK;
+#ifdef FUZZING
+ tf_select = rand()&0x1;
+ tf_res[0] = rand()&0x1;
+ for (i=1;i<len;i++)
+ tf_res[i] = tf_res[i-1] ^ ((rand()&0xF) == 0);
+#endif
+ return tf_select;
+}
+
+static void tf_encode(int start, int end, int isTransient, int *tf_res, int LM, int tf_select, ec_enc *enc)
+{
+ int curr, i;
+ int tf_select_rsv;
+ int tf_changed;
+ int logp;
+ opus_uint32 budget;
+ opus_uint32 tell;
+ budget = enc->storage*8;
+ tell = ec_tell(enc);
+ logp = isTransient ? 2 : 4;
+ /* Reserve space to code the tf_select decision. */
+ tf_select_rsv = LM>0 && tell+logp+1 <= budget;
+ budget -= tf_select_rsv;
+ curr = tf_changed = 0;
+ for (i=start;i<end;i++)
+ {
+ if (tell+logp<=budget)
+ {
+ ec_enc_bit_logp(enc, tf_res[i] ^ curr, logp);
+ tell = ec_tell(enc);
+ curr = tf_res[i];
+ tf_changed |= curr;
+ }
+ else
+ tf_res[i] = curr;
+ logp = isTransient ? 4 : 5;
+ }
+ /* Only code tf_select if it would actually make a difference. */
+ if (tf_select_rsv &&
+ tf_select_table[LM][4*isTransient+0+tf_changed]!=
+ tf_select_table[LM][4*isTransient+2+tf_changed])
+ ec_enc_bit_logp(enc, tf_select, 1);
+ else
+ tf_select = 0;
+ for (i=start;i<end;i++)
+ tf_res[i] = tf_select_table[LM][4*isTransient+2*tf_select+tf_res[i]];
+ /*for(i=0;i<end;i++)printf("%d ", isTransient ? tf_res[i] : LM+tf_res[i]);printf("\n");*/
+}
+
+
+static int alloc_trim_analysis(const CELTMode *m, const celt_norm *X,
+ const opus_val16 *bandLogE, int end, int LM, int C, int N0,
+ AnalysisInfo *analysis, opus_val16 *stereo_saving, opus_val16 tf_estimate,
+ int intensity, opus_val16 surround_trim, int arch)
+{
+ int i;
+ opus_val32 diff=0;
+ int c;
+ int trim_index;
+ opus_val16 trim = QCONST16(5.f, 8);
+ opus_val16 logXC, logXC2;
+ if (C==2)
+ {
+ opus_val16 sum = 0; /* Q10 */
+ opus_val16 minXC; /* Q10 */
+ /* Compute inter-channel correlation for low frequencies */
+ for (i=0;i<8;i++)
+ {
+ opus_val32 partial;
+ partial = celt_inner_prod(&X[m->eBands[i]<<LM], &X[N0+(m->eBands[i]<<LM)],
+ (m->eBands[i+1]-m->eBands[i])<<LM, arch);
+ sum = ADD16(sum, EXTRACT16(SHR32(partial, 18)));
+ }
+ sum = MULT16_16_Q15(QCONST16(1.f/8, 15), sum);
+ sum = MIN16(QCONST16(1.f, 10), ABS16(sum));
+ minXC = sum;
+ for (i=8;i<intensity;i++)
+ {
+ opus_val32 partial;
+ partial = celt_inner_prod(&X[m->eBands[i]<<LM], &X[N0+(m->eBands[i]<<LM)],
+ (m->eBands[i+1]-m->eBands[i])<<LM, arch);
+ minXC = MIN16(minXC, ABS16(EXTRACT16(SHR32(partial, 18))));
+ }
+ minXC = MIN16(QCONST16(1.f, 10), ABS16(minXC));
+ /*printf ("%f\n", sum);*/
+ /* mid-side savings estimations based on the LF average*/
+ logXC = celt_log2(QCONST32(1.001f, 20)-MULT16_16(sum, sum));
+ /* mid-side savings estimations based on min correlation */
+ logXC2 = MAX16(HALF16(logXC), celt_log2(QCONST32(1.001f, 20)-MULT16_16(minXC, minXC)));
+#ifdef FIXED_POINT
+ /* Compensate for Q20 vs Q14 input and convert output to Q8 */
+ logXC = PSHR32(logXC-QCONST16(6.f, DB_SHIFT),DB_SHIFT-8);
+ logXC2 = PSHR32(logXC2-QCONST16(6.f, DB_SHIFT),DB_SHIFT-8);
+#endif
+
+ trim += MAX16(-QCONST16(4.f, 8), MULT16_16_Q15(QCONST16(.75f,15),logXC));
+ *stereo_saving = MIN16(*stereo_saving + QCONST16(0.25f, 8), -HALF16(logXC2));
+ }
+
+ /* Estimate spectral tilt */
+ c=0; do {
+ for (i=0;i<end-1;i++)
+ {
+ diff += bandLogE[i+c*m->nbEBands]*(opus_int32)(2+2*i-end);
+ }
+ } while (++c<C);
+ diff /= C*(end-1);
+ /*printf("%f\n", diff);*/
+ trim -= MAX16(-QCONST16(2.f, 8), MIN16(QCONST16(2.f, 8), SHR16(diff+QCONST16(1.f, DB_SHIFT),DB_SHIFT-8)/6 ));
+ trim -= SHR16(surround_trim, DB_SHIFT-8);
+ trim -= 2*SHR16(tf_estimate, 14-8);
+#ifndef DISABLE_FLOAT_API
+ if (analysis->valid)
+ {
+ trim -= MAX16(-QCONST16(2.f, 8), MIN16(QCONST16(2.f, 8),
+ (opus_val16)(QCONST16(2.f, 8)*(analysis->tonality_slope+.05f))));
+ }
+#else
+ (void)analysis;
+#endif
+
+#ifdef FIXED_POINT
+ trim_index = PSHR32(trim, 8);
+#else
+ trim_index = (int)floor(.5f+trim);
+#endif
+ trim_index = IMAX(0, IMIN(10, trim_index));
+ /*printf("%d\n", trim_index);*/
+#ifdef FUZZING
+ trim_index = rand()%11;
+#endif
+ return trim_index;
+}
+
+static int stereo_analysis(const CELTMode *m, const celt_norm *X,
+ int LM, int N0)
+{
+ int i;
+ int thetas;
+ opus_val32 sumLR = EPSILON, sumMS = EPSILON;
+
+ /* Use the L1 norm to model the entropy of the L/R signal vs the M/S signal */
+ for (i=0;i<13;i++)
+ {
+ int j;
+ for (j=m->eBands[i]<<LM;j<m->eBands[i+1]<<LM;j++)
+ {
+ opus_val32 L, R, M, S;
+ /* We cast to 32-bit first because of the -32768 case */
+ L = EXTEND32(X[j]);
+ R = EXTEND32(X[N0+j]);
+ M = ADD32(L, R);
+ S = SUB32(L, R);
+ sumLR = ADD32(sumLR, ADD32(ABS32(L), ABS32(R)));
+ sumMS = ADD32(sumMS, ADD32(ABS32(M), ABS32(S)));
+ }
+ }
+ sumMS = MULT16_32_Q15(QCONST16(0.707107f, 15), sumMS);
+ thetas = 13;
+ /* We don't need thetas for lower bands with LM<=1 */
+ if (LM<=1)
+ thetas -= 8;
+ return MULT16_32_Q15((m->eBands[13]<<(LM+1))+thetas, sumMS)
+ > MULT16_32_Q15(m->eBands[13]<<(LM+1), sumLR);
+}
+
+#define MSWAP(a,b) do {opus_val16 tmp = a;a=b;b=tmp;} while(0)
+static opus_val16 median_of_5(const opus_val16 *x)
+{
+ opus_val16 t0, t1, t2, t3, t4;
+ t2 = x[2];
+ if (x[0] > x[1])
+ {
+ t0 = x[1];
+ t1 = x[0];
+ } else {
+ t0 = x[0];
+ t1 = x[1];
+ }
+ if (x[3] > x[4])
+ {
+ t3 = x[4];
+ t4 = x[3];
+ } else {
+ t3 = x[3];
+ t4 = x[4];
+ }
+ if (t0 > t3)
+ {
+ MSWAP(t0, t3);
+ MSWAP(t1, t4);
+ }
+ if (t2 > t1)
+ {
+ if (t1 < t3)
+ return MIN16(t2, t3);
+ else
+ return MIN16(t4, t1);
+ } else {
+ if (t2 < t3)
+ return MIN16(t1, t3);
+ else
+ return MIN16(t2, t4);
+ }
+}
+
+static opus_val16 median_of_3(const opus_val16 *x)
+{
+ opus_val16 t0, t1, t2;
+ if (x[0] > x[1])
+ {
+ t0 = x[1];
+ t1 = x[0];
+ } else {
+ t0 = x[0];
+ t1 = x[1];
+ }
+ t2 = x[2];
+ if (t1 < t2)
+ return t1;
+ else if (t0 < t2)
+ return t2;
+ else
+ return t0;
+}
+
+static opus_val16 dynalloc_analysis(const opus_val16 *bandLogE, const opus_val16 *bandLogE2,
+ int nbEBands, int start, int end, int C, int *offsets, int lsb_depth, const opus_int16 *logN,
+ int isTransient, int vbr, int constrained_vbr, const opus_int16 *eBands, int LM,
+ int effectiveBytes, opus_int32 *tot_boost_, int lfe, opus_val16 *surround_dynalloc)
+{
+ int i, c;
+ opus_int32 tot_boost=0;
+ opus_val16 maxDepth;
+ VARDECL(opus_val16, follower);
+ VARDECL(opus_val16, noise_floor);
+ SAVE_STACK;
+ ALLOC(follower, C*nbEBands, opus_val16);
+ ALLOC(noise_floor, C*nbEBands, opus_val16);
+ OPUS_CLEAR(offsets, nbEBands);
+ /* Dynamic allocation code */
+ maxDepth=-QCONST16(31.9f, DB_SHIFT);
+ for (i=0;i<end;i++)
+ {
+ /* Noise floor must take into account eMeans, the depth, the width of the bands
+ and the preemphasis filter (approx. square of bark band ID) */
+ noise_floor[i] = MULT16_16(QCONST16(0.0625f, DB_SHIFT),logN[i])
+ +QCONST16(.5f,DB_SHIFT)+SHL16(9-lsb_depth,DB_SHIFT)-SHL16(eMeans[i],6)
+ +MULT16_16(QCONST16(.0062,DB_SHIFT),(i+5)*(i+5));
+ }
+ c=0;do
+ {
+ for (i=0;i<end;i++)
+ maxDepth = MAX16(maxDepth, bandLogE[c*nbEBands+i]-noise_floor[i]);
+ } while (++c<C);
+ /* Make sure that dynamic allocation can't make us bust the budget */
+ if (effectiveBytes > 50 && LM>=1 && !lfe)
+ {
+ int last=0;
+ c=0;do
+ {
+ opus_val16 offset;
+ opus_val16 tmp;
+ opus_val16 *f;
+ f = &follower[c*nbEBands];
+ f[0] = bandLogE2[c*nbEBands];
+ for (i=1;i<end;i++)
+ {
+ /* The last band to be at least 3 dB higher than the previous one
+ is the last we'll consider. Otherwise, we run into problems on
+ bandlimited signals. */
+ if (bandLogE2[c*nbEBands+i] > bandLogE2[c*nbEBands+i-1]+QCONST16(.5f,DB_SHIFT))
+ last=i;
+ f[i] = MIN16(f[i-1]+QCONST16(1.5f,DB_SHIFT), bandLogE2[c*nbEBands+i]);
+ }
+ for (i=last-1;i>=0;i--)
+ f[i] = MIN16(f[i], MIN16(f[i+1]+QCONST16(2.f,DB_SHIFT), bandLogE2[c*nbEBands+i]));
+
+ /* Combine with a median filter to avoid dynalloc triggering unnecessarily.
+ The "offset" value controls how conservative we are -- a higher offset
+ reduces the impact of the median filter and makes dynalloc use more bits. */
+ offset = QCONST16(1.f, DB_SHIFT);
+ for (i=2;i<end-2;i++)
+ f[i] = MAX16(f[i], median_of_5(&bandLogE2[c*nbEBands+i-2])-offset);
+ tmp = median_of_3(&bandLogE2[c*nbEBands])-offset;
+ f[0] = MAX16(f[0], tmp);
+ f[1] = MAX16(f[1], tmp);
+ tmp = median_of_3(&bandLogE2[c*nbEBands+end-3])-offset;
+ f[end-2] = MAX16(f[end-2], tmp);
+ f[end-1] = MAX16(f[end-1], tmp);
+
+ for (i=0;i<end;i++)
+ f[i] = MAX16(f[i], noise_floor[i]);
+ } while (++c<C);
+ if (C==2)
+ {
+ for (i=start;i<end;i++)
+ {
+ /* Consider 24 dB "cross-talk" */
+ follower[nbEBands+i] = MAX16(follower[nbEBands+i], follower[ i]-QCONST16(4.f,DB_SHIFT));
+ follower[ i] = MAX16(follower[ i], follower[nbEBands+i]-QCONST16(4.f,DB_SHIFT));
+ follower[i] = HALF16(MAX16(0, bandLogE[i]-follower[i]) + MAX16(0, bandLogE[nbEBands+i]-follower[nbEBands+i]));
+ }
+ } else {
+ for (i=start;i<end;i++)
+ {
+ follower[i] = MAX16(0, bandLogE[i]-follower[i]);
+ }
+ }
+ for (i=start;i<end;i++)
+ follower[i] = MAX16(follower[i], surround_dynalloc[i]);
+ /* For non-transient CBR/CVBR frames, halve the dynalloc contribution */
+ if ((!vbr || constrained_vbr)&&!isTransient)
+ {
+ for (i=start;i<end;i++)
+ follower[i] = HALF16(follower[i]);
+ }
+ for (i=start;i<end;i++)
+ {
+ int width;
+ int boost;
+ int boost_bits;
+
+ if (i<8)
+ follower[i] *= 2;
+ if (i>=12)
+ follower[i] = HALF16(follower[i]);
+ follower[i] = MIN16(follower[i], QCONST16(4, DB_SHIFT));
+
+ width = C*(eBands[i+1]-eBands[i])<<LM;
+ if (width<6)
+ {
+ boost = (int)SHR32(EXTEND32(follower[i]),DB_SHIFT);
+ boost_bits = boost*width<<BITRES;
+ } else if (width > 48) {
+ boost = (int)SHR32(EXTEND32(follower[i])*8,DB_SHIFT);
+ boost_bits = (boost*width<<BITRES)/8;
+ } else {
+ boost = (int)SHR32(EXTEND32(follower[i])*width/6,DB_SHIFT);
+ boost_bits = boost*6<<BITRES;
+ }
+ /* For CBR and non-transient CVBR frames, limit dynalloc to 1/4 of the bits */
+ if ((!vbr || (constrained_vbr&&!isTransient))
+ && (tot_boost+boost_bits)>>BITRES>>3 > effectiveBytes/4)
+ {
+ opus_int32 cap = ((effectiveBytes/4)<<BITRES<<3);
+ offsets[i] = cap-tot_boost;
+ tot_boost = cap;
+ break;
+ } else {
+ offsets[i] = boost;
+ tot_boost += boost_bits;
+ }
+ }
+ }
+ *tot_boost_ = tot_boost;
+ RESTORE_STACK;
+ return maxDepth;
+}
+
+
+static int run_prefilter(CELTEncoder *st, celt_sig *in, celt_sig *prefilter_mem, int CC, int N,
+ int prefilter_tapset, int *pitch, opus_val16 *gain, int *qgain, int enabled, int nbAvailableBytes)
+{
+ int c;
+ VARDECL(celt_sig, _pre);
+ celt_sig *pre[2];
+ const CELTMode *mode;
+ int pitch_index;
+ opus_val16 gain1;
+ opus_val16 pf_threshold;
+ int pf_on;
+ int qg;
+ int overlap;
+ SAVE_STACK;
+
+ mode = st->mode;
+ overlap = mode->overlap;
+ ALLOC(_pre, CC*(N+COMBFILTER_MAXPERIOD), celt_sig);
+
+ pre[0] = _pre;
+ pre[1] = _pre + (N+COMBFILTER_MAXPERIOD);
+
+
+ c=0; do {
+ OPUS_COPY(pre[c], prefilter_mem+c*COMBFILTER_MAXPERIOD, COMBFILTER_MAXPERIOD);
+ OPUS_COPY(pre[c]+COMBFILTER_MAXPERIOD, in+c*(N+overlap)+overlap, N);
+ } while (++c<CC);
+
+ if (enabled)
+ {
+ VARDECL(opus_val16, pitch_buf);
+ ALLOC(pitch_buf, (COMBFILTER_MAXPERIOD+N)>>1, opus_val16);
+
+ pitch_downsample(pre, pitch_buf, COMBFILTER_MAXPERIOD+N, CC, st->arch);
+ /* Don't search for the fir last 1.5 octave of the range because
+ there's too many false-positives due to short-term correlation */
+ pitch_search(pitch_buf+(COMBFILTER_MAXPERIOD>>1), pitch_buf, N,
+ COMBFILTER_MAXPERIOD-3*COMBFILTER_MINPERIOD, &pitch_index,
+ st->arch);
+ pitch_index = COMBFILTER_MAXPERIOD-pitch_index;
+
+ gain1 = remove_doubling(pitch_buf, COMBFILTER_MAXPERIOD, COMBFILTER_MINPERIOD,
+ N, &pitch_index, st->prefilter_period, st->prefilter_gain, st->arch);
+ if (pitch_index > COMBFILTER_MAXPERIOD-2)
+ pitch_index = COMBFILTER_MAXPERIOD-2;
+ gain1 = MULT16_16_Q15(QCONST16(.7f,15),gain1);
+ /*printf("%d %d %f %f\n", pitch_change, pitch_index, gain1, st->analysis.tonality);*/
+ if (st->loss_rate>2)
+ gain1 = HALF32(gain1);
+ if (st->loss_rate>4)
+ gain1 = HALF32(gain1);
+ if (st->loss_rate>8)
+ gain1 = 0;
+ } else {
+ gain1 = 0;
+ pitch_index = COMBFILTER_MINPERIOD;
+ }
+
+ /* Gain threshold for enabling the prefilter/postfilter */
+ pf_threshold = QCONST16(.2f,15);
+
+ /* Adjusting the threshold based on rate and continuity */
+ if (abs(pitch_index-st->prefilter_period)*10>pitch_index)
+ pf_threshold += QCONST16(.2f,15);
+ if (nbAvailableBytes<25)
+ pf_threshold += QCONST16(.1f,15);
+ if (nbAvailableBytes<35)
+ pf_threshold += QCONST16(.1f,15);
+ if (st->prefilter_gain > QCONST16(.4f,15))
+ pf_threshold -= QCONST16(.1f,15);
+ if (st->prefilter_gain > QCONST16(.55f,15))
+ pf_threshold -= QCONST16(.1f,15);
+
+ /* Hard threshold at 0.2 */
+ pf_threshold = MAX16(pf_threshold, QCONST16(.2f,15));
+ if (gain1<pf_threshold)
+ {
+ gain1 = 0;
+ pf_on = 0;
+ qg = 0;
+ } else {
+ /*This block is not gated by a total bits check only because
+ of the nbAvailableBytes check above.*/
+ if (ABS16(gain1-st->prefilter_gain)<QCONST16(.1f,15))
+ gain1=st->prefilter_gain;
+
+#ifdef FIXED_POINT
+ qg = ((gain1+1536)>>10)/3-1;
+#else
+ qg = (int)floor(.5f+gain1*32/3)-1;
+#endif
+ qg = IMAX(0, IMIN(7, qg));
+ gain1 = QCONST16(0.09375f,15)*(qg+1);
+ pf_on = 1;
+ }
+ /*printf("%d %f\n", pitch_index, gain1);*/
+
+ c=0; do {
+ int offset = mode->shortMdctSize-overlap;
+ st->prefilter_period=IMAX(st->prefilter_period, COMBFILTER_MINPERIOD);
+ OPUS_COPY(in+c*(N+overlap), st->in_mem+c*(overlap), overlap);
+ if (offset)
+ comb_filter(in+c*(N+overlap)+overlap, pre[c]+COMBFILTER_MAXPERIOD,
+ st->prefilter_period, st->prefilter_period, offset, -st->prefilter_gain, -st->prefilter_gain,
+ st->prefilter_tapset, st->prefilter_tapset, NULL, 0, st->arch);
+
+ comb_filter(in+c*(N+overlap)+overlap+offset, pre[c]+COMBFILTER_MAXPERIOD+offset,
+ st->prefilter_period, pitch_index, N-offset, -st->prefilter_gain, -gain1,
+ st->prefilter_tapset, prefilter_tapset, mode->window, overlap, st->arch);
+ OPUS_COPY(st->in_mem+c*(overlap), in+c*(N+overlap)+N, overlap);
+
+ if (N>COMBFILTER_MAXPERIOD)
+ {
+ OPUS_COPY(prefilter_mem+c*COMBFILTER_MAXPERIOD, pre[c]+N, COMBFILTER_MAXPERIOD);
+ } else {
+ OPUS_MOVE(prefilter_mem+c*COMBFILTER_MAXPERIOD, prefilter_mem+c*COMBFILTER_MAXPERIOD+N, COMBFILTER_MAXPERIOD-N);
+ OPUS_COPY(prefilter_mem+c*COMBFILTER_MAXPERIOD+COMBFILTER_MAXPERIOD-N, pre[c]+COMBFILTER_MAXPERIOD, N);
+ }
+ } while (++c<CC);
+
+ RESTORE_STACK;
+ *gain = gain1;
+ *pitch = pitch_index;
+ *qgain = qg;
+ return pf_on;
+}
+
+static int compute_vbr(const CELTMode *mode, AnalysisInfo *analysis, opus_int32 base_target,
+ int LM, opus_int32 bitrate, int lastCodedBands, int C, int intensity,
+ int constrained_vbr, opus_val16 stereo_saving, int tot_boost,
+ opus_val16 tf_estimate, int pitch_change, opus_val16 maxDepth,
+ int variable_duration, int lfe, int has_surround_mask, opus_val16 surround_masking,
+ opus_val16 temporal_vbr)
+{
+ /* The target rate in 8th bits per frame */
+ opus_int32 target;
+ int coded_bins;
+ int coded_bands;
+ opus_val16 tf_calibration;
+ int nbEBands;
+ const opus_int16 *eBands;
+
+ nbEBands = mode->nbEBands;
+ eBands = mode->eBands;
+
+ coded_bands = lastCodedBands ? lastCodedBands : nbEBands;
+ coded_bins = eBands[coded_bands]<<LM;
+ if (C==2)
+ coded_bins += eBands[IMIN(intensity, coded_bands)]<<LM;
+
+ target = base_target;
+
+ /*printf("%f %f %f %f %d %d ", st->analysis.activity, st->analysis.tonality, tf_estimate, st->stereo_saving, tot_boost, coded_bands);*/
+#ifndef DISABLE_FLOAT_API
+ if (analysis->valid && analysis->activity<.4)
+ target -= (opus_int32)((coded_bins<<BITRES)*(.4f-analysis->activity));
+#endif
+ /* Stereo savings */
+ if (C==2)
+ {
+ int coded_stereo_bands;
+ int coded_stereo_dof;
+ opus_val16 max_frac;
+ coded_stereo_bands = IMIN(intensity, coded_bands);
+ coded_stereo_dof = (eBands[coded_stereo_bands]<<LM)-coded_stereo_bands;
+ /* Maximum fraction of the bits we can save if the signal is mono. */
+ max_frac = DIV32_16(MULT16_16(QCONST16(0.8f, 15), coded_stereo_dof), coded_bins);
+ stereo_saving = MIN16(stereo_saving, QCONST16(1.f, 8));
+ /*printf("%d %d %d ", coded_stereo_dof, coded_bins, tot_boost);*/
+ target -= (opus_int32)MIN32(MULT16_32_Q15(max_frac,target),
+ SHR32(MULT16_16(stereo_saving-QCONST16(0.1f,8),(coded_stereo_dof<<BITRES)),8));
+ }
+ /* Boost the rate according to dynalloc (minus the dynalloc average for calibration). */
+ target += tot_boost-(16<<LM);
+ /* Apply transient boost, compensating for average boost. */
+ tf_calibration = variable_duration==OPUS_FRAMESIZE_VARIABLE ?
+ QCONST16(0.02f,14) : QCONST16(0.04f,14);
+ target += (opus_int32)SHL32(MULT16_32_Q15(tf_estimate-tf_calibration, target),1);
+
+#ifndef DISABLE_FLOAT_API
+ /* Apply tonality boost */
+ if (analysis->valid && !lfe)
+ {
+ opus_int32 tonal_target;
+ float tonal;
+
+ /* Tonality boost (compensating for the average). */
+ tonal = MAX16(0.f,analysis->tonality-.15f)-0.09f;
+ tonal_target = target + (opus_int32)((coded_bins<<BITRES)*1.2f*tonal);
+ if (pitch_change)
+ tonal_target += (opus_int32)((coded_bins<<BITRES)*.8f);
+ /*printf("%f %f ", analysis->tonality, tonal);*/
+ target = tonal_target;
+ }
+#else
+ (void)analysis;
+ (void)pitch_change;
+#endif
+
+ if (has_surround_mask&&!lfe)
+ {
+ opus_int32 surround_target = target + (opus_int32)SHR32(MULT16_16(surround_masking,coded_bins<<BITRES), DB_SHIFT);
+ /*printf("%f %d %d %d %d %d %d ", surround_masking, coded_bins, st->end, st->intensity, surround_target, target, st->bitrate);*/
+ target = IMAX(target/4, surround_target);
+ }
+
+ {
+ opus_int32 floor_depth;
+ int bins;
+ bins = eBands[nbEBands-2]<<LM;
+ /*floor_depth = SHR32(MULT16_16((C*bins<<BITRES),celt_log2(SHL32(MAX16(1,sample_max),13))), DB_SHIFT);*/
+ floor_depth = (opus_int32)SHR32(MULT16_16((C*bins<<BITRES),maxDepth), DB_SHIFT);
+ floor_depth = IMAX(floor_depth, target>>2);
+ target = IMIN(target, floor_depth);
+ /*printf("%f %d\n", maxDepth, floor_depth);*/
+ }
+
+ if ((!has_surround_mask||lfe) && (constrained_vbr || bitrate<64000))
+ {
+ opus_val16 rate_factor = Q15ONE;
+ if (bitrate < 64000)
+ {
+#ifdef FIXED_POINT
+ rate_factor = MAX16(0,(bitrate-32000));
+#else
+ rate_factor = MAX16(0,(1.f/32768)*(bitrate-32000));
+#endif
+ }
+ if (constrained_vbr)
+ rate_factor = MIN16(rate_factor, QCONST16(0.67f, 15));
+ target = base_target + (opus_int32)MULT16_32_Q15(rate_factor, target-base_target);
+
+ }
+
+ if (!has_surround_mask && tf_estimate < QCONST16(.2f, 14))
+ {
+ opus_val16 amount;
+ opus_val16 tvbr_factor;
+ amount = MULT16_16_Q15(QCONST16(.0000031f, 30), IMAX(0, IMIN(32000, 96000-bitrate)));
+ tvbr_factor = SHR32(MULT16_16(temporal_vbr, amount), DB_SHIFT);
+ target += (opus_int32)MULT16_32_Q15(tvbr_factor, target);
+ }
+
+ /* Don't allow more than doubling the rate */
+ target = IMIN(2*base_target, target);
+
+ return target;
+}
+
+int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc)
+{
+ int i, c, N;
+ opus_int32 bits;
+ ec_enc _enc;
+ VARDECL(celt_sig, in);
+ VARDECL(celt_sig, freq);
+ VARDECL(celt_norm, X);
+ VARDECL(celt_ener, bandE);
+ VARDECL(opus_val16, bandLogE);
+ VARDECL(opus_val16, bandLogE2);
+ VARDECL(int, fine_quant);
+ VARDECL(opus_val16, error);
+ VARDECL(int, pulses);
+ VARDECL(int, cap);
+ VARDECL(int, offsets);
+ VARDECL(int, fine_priority);
+ VARDECL(int, tf_res);
+ VARDECL(unsigned char, collapse_masks);
+ celt_sig *prefilter_mem;
+ opus_val16 *oldBandE, *oldLogE, *oldLogE2;
+ int shortBlocks=0;
+ int isTransient=0;
+ const int CC = st->channels;
+ const int C = st->stream_channels;
+ int LM, M;
+ int tf_select;
+ int nbFilledBytes, nbAvailableBytes;
+ int start;
+ int end;
+ int effEnd;
+ int codedBands;
+ int tf_sum;
+ int alloc_trim;
+ int pitch_index=COMBFILTER_MINPERIOD;
+ opus_val16 gain1 = 0;
+ int dual_stereo=0;
+ int effectiveBytes;
+ int dynalloc_logp;
+ opus_int32 vbr_rate;
+ opus_int32 total_bits;
+ opus_int32 total_boost;
+ opus_int32 balance;
+ opus_int32 tell;
+ int prefilter_tapset=0;
+ int pf_on;
+ int anti_collapse_rsv;
+ int anti_collapse_on=0;
+ int silence=0;
+ int tf_chan = 0;
+ opus_val16 tf_estimate;
+ int pitch_change=0;
+ opus_int32 tot_boost;
+ opus_val32 sample_max;
+ opus_val16 maxDepth;
+ const OpusCustomMode *mode;
+ int nbEBands;
+ int overlap;
+ const opus_int16 *eBands;
+ int secondMdct;
+ int signalBandwidth;
+ int transient_got_disabled=0;
+ opus_val16 surround_masking=0;
+ opus_val16 temporal_vbr=0;
+ opus_val16 surround_trim = 0;
+ opus_int32 equiv_rate = 510000;
+ VARDECL(opus_val16, surround_dynalloc);
+ ALLOC_STACK;
+
+ mode = st->mode;
+ nbEBands = mode->nbEBands;
+ overlap = mode->overlap;
+ eBands = mode->eBands;
+ start = st->start;
+ end = st->end;
+ tf_estimate = 0;
+ if (nbCompressedBytes<2 || pcm==NULL)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+
+ frame_size *= st->upsample;
+ for (LM=0;LM<=mode->maxLM;LM++)
+ if (mode->shortMdctSize<<LM==frame_size)
+ break;
+ if (LM>mode->maxLM)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+ M=1<<LM;
+ N = M*mode->shortMdctSize;
+
+ prefilter_mem = st->in_mem+CC*(overlap);
+ oldBandE = (opus_val16*)(st->in_mem+CC*(overlap+COMBFILTER_MAXPERIOD));
+ oldLogE = oldBandE + CC*nbEBands;
+ oldLogE2 = oldLogE + CC*nbEBands;
+
+ if (enc==NULL)
+ {
+ tell=1;
+ nbFilledBytes=0;
+ } else {
+ tell=ec_tell(enc);
+ nbFilledBytes=(tell+4)>>3;
+ }
+
+#ifdef CUSTOM_MODES
+ if (st->signalling && enc==NULL)
+ {
+ int tmp = (mode->effEBands-end)>>1;
+ end = st->end = IMAX(1, mode->effEBands-tmp);
+ compressed[0] = tmp<<5;
+ compressed[0] |= LM<<3;
+ compressed[0] |= (C==2)<<2;
+ /* Convert "standard mode" to Opus header */
+ if (mode->Fs==48000 && mode->shortMdctSize==120)
+ {
+ int c0 = toOpus(compressed[0]);
+ if (c0<0)
+ {
+ RESTORE_STACK;
+ return OPUS_BAD_ARG;
+ }
+ compressed[0] = c0;
+ }
+ compressed++;
+ nbCompressedBytes--;
+ }
+#else
+ celt_assert(st->signalling==0);
+#endif
+
+ /* Can't produce more than 1275 output bytes */
+ nbCompressedBytes = IMIN(nbCompressedBytes,1275);
+ nbAvailableBytes = nbCompressedBytes - nbFilledBytes;
+
+ if (st->vbr && st->bitrate!=OPUS_BITRATE_MAX)
+ {
+ opus_int32 den=mode->Fs>>BITRES;
+ vbr_rate=(st->bitrate*frame_size+(den>>1))/den;
+#ifdef CUSTOM_MODES
+ if (st->signalling)
+ vbr_rate -= 8<<BITRES;
+#endif
+ effectiveBytes = vbr_rate>>(3+BITRES);
+ } else {
+ opus_int32 tmp;
+ vbr_rate = 0;
+ tmp = st->bitrate*frame_size;
+ if (tell>1)
+ tmp += tell;
+ if (st->bitrate!=OPUS_BITRATE_MAX)
+ nbCompressedBytes = IMAX(2, IMIN(nbCompressedBytes,
+ (tmp+4*mode->Fs)/(8*mode->Fs)-!!st->signalling));
+ effectiveBytes = nbCompressedBytes;
+ }
+ if (st->bitrate != OPUS_BITRATE_MAX)
+ equiv_rate = st->bitrate - (40*C+20)*((400>>LM) - 50);
+
+ if (enc==NULL)
+ {
+ ec_enc_init(&_enc, compressed, nbCompressedBytes);
+ enc = &_enc;
+ }
+
+ if (vbr_rate>0)
+ {
+ /* Computes the max bit-rate allowed in VBR mode to avoid violating the
+ target rate and buffering.
+ We must do this up front so that bust-prevention logic triggers
+ correctly if we don't have enough bits. */
+ if (st->constrained_vbr)
+ {
+ opus_int32 vbr_bound;
+ opus_int32 max_allowed;
+ /* We could use any multiple of vbr_rate as bound (depending on the
+ delay).
+ This is clamped to ensure we use at least two bytes if the encoder
+ was entirely empty, but to allow 0 in hybrid mode. */
+ vbr_bound = vbr_rate;
+ max_allowed = IMIN(IMAX(tell==1?2:0,
+ (vbr_rate+vbr_bound-st->vbr_reservoir)>>(BITRES+3)),
+ nbAvailableBytes);
+ if(max_allowed < nbAvailableBytes)
