| /* |
| * Copyright (c) 2012 |
| * MIPS Technologies, Inc., California. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``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 MIPS TECHNOLOGIES, INC. 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. |
| * |
| * Author: Nedeljko Babic (nbabic@mips.com) |
| * |
| * various filters for ACELP-based codecs optimized for MIPS |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * Reference: libavcodec/acelp_filters.c |
| */ |
| #include "config.h" |
| #include "libavutil/attributes.h" |
| #include "libavcodec/acelp_filters.h" |
| #include "libavutil/mips/asmdefs.h" |
| |
| #if HAVE_INLINE_ASM |
| #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 |
| static void ff_acelp_interpolatef_mips(float *out, const float *in, |
| const float *filter_coeffs, int precision, |
| int frac_pos, int filter_length, int length) |
| { |
| int n, i; |
| int prec = precision * 4; |
| int fc_offset = precision - frac_pos; |
| float in_val_p, in_val_m, fc_val_p, fc_val_m; |
| |
| for (n = 0; n < length; n++) { |
| /** |
| * four pointers are defined in order to minimize number of |
| * computations done in inner loop |
| */ |
| const float *p_in_p = &in[n]; |
| const float *p_in_m = &in[n-1]; |
| const float *p_filter_coeffs_p = &filter_coeffs[frac_pos]; |
| const float *p_filter_coeffs_m = filter_coeffs + fc_offset; |
| float v = 0; |
| |
| for (i = 0; i < filter_length;i++) { |
| __asm__ volatile ( |
| "lwc1 %[in_val_p], 0(%[p_in_p]) \n\t" |
| "lwc1 %[fc_val_p], 0(%[p_filter_coeffs_p]) \n\t" |
| "lwc1 %[in_val_m], 0(%[p_in_m]) \n\t" |
| "lwc1 %[fc_val_m], 0(%[p_filter_coeffs_m]) \n\t" |
| PTR_ADDIU "%[p_in_p], %[p_in_p], 4 \n\t" |
| "madd.s %[v],%[v], %[in_val_p],%[fc_val_p] \n\t" |
| PTR_ADDIU "%[p_in_m], %[p_in_m], -4 \n\t" |
| PTR_ADDU "%[p_filter_coeffs_p],%[p_filter_coeffs_p], %[prec] \n\t" |
| PTR_ADDU "%[p_filter_coeffs_m],%[p_filter_coeffs_m], %[prec] \n\t" |
| "madd.s %[v],%[v],%[in_val_m], %[fc_val_m] \n\t" |
| |
| : [v] "+&f" (v),[p_in_p] "+r" (p_in_p), [p_in_m] "+r" (p_in_m), |
| [p_filter_coeffs_p] "+r" (p_filter_coeffs_p), |
| [in_val_p] "=&f" (in_val_p), [in_val_m] "=&f" (in_val_m), |
| [fc_val_p] "=&f" (fc_val_p), [fc_val_m] "=&f" (fc_val_m), |
| [p_filter_coeffs_m] "+r" (p_filter_coeffs_m) |
| : [prec] "r" (prec) |
| : "memory" |
| ); |
| } |
| out[n] = v; |
| } |
| } |
| |
| static void ff_acelp_apply_order_2_transfer_function_mips(float *out, const float *in, |
| const float zero_coeffs[2], |
| const float pole_coeffs[2], |
| float gain, float mem[2], int n) |
| { |
| /** |
| * loop is unrolled eight times |
| */ |
| |
| __asm__ volatile ( |
| "lwc1 $f0, 0(%[mem]) \n\t" |
| "blez %[n], ff_acelp_apply_order_2_transfer_function_end%= \n\t" |
| "lwc1 $f1, 4(%[mem]) \n\t" |
| "lwc1 $f2, 0(%[pole_coeffs]) \n\t" |
| "lwc1 $f3, 4(%[pole_coeffs]) \n\t" |
| "lwc1 $f4, 0(%[zero_coeffs]) \n\t" |
| "lwc1 $f5, 4(%[zero_coeffs]) \n\t" |
| |
| "ff_acelp_apply_order_2_transfer_function_madd%=: \n\t" |
| |
| "lwc1 $f6, 0(%[in]) \n\t" |
| "mul.s $f9, $f3, $f1 \n\t" |
| "mul.s $f7, $f2, $f0 \n\t" |
| "msub.s $f7, $f7, %[gain], $f6 \n\t" |
| "sub.s $f7, $f7, $f9 \n\t" |
| "madd.s $f8, $f7, $f4, $f0 \n\t" |
| "madd.s $f8, $f8, $f5, $f1 \n\t" |
| "lwc1 $f11, 4(%[in]) \n\t" |
| "mul.s $f12, $f3, $f0 \n\t" |
| "mul.s $f13, $f2, $f7 \n\t" |
| "msub.s $f13, $f13, %[gain], $f11 \n\t" |
| "sub.s $f13, $f13, $f12 \n\t" |
| "madd.s $f14, $f13, $f4, $f7 \n\t" |
| "madd.s $f14, $f14, $f5, $f0 \n\t" |
| "swc1 $f8, 0(%[out]) \n\t" |
| "lwc1 $f6, 8(%[in]) \n\t" |
| "mul.s $f9, $f3, $f7 \n\t" |
| "mul.s $f15, $f2, $f13 \n\t" |
| "msub.s $f15, $f15, %[gain], $f6 \n\t" |
| "sub.s $f15, $f15, $f9 \n\t" |
| "madd.s $f8, $f15, $f4, $f13 \n\t" |
| "madd.s $f8, $f8, $f5, $f7 \n\t" |
| "swc1 $f14, 4(%[out]) \n\t" |
| "lwc1 $f11, 12(%[in]) \n\t" |
| "mul.s $f12, $f3, $f13 \n\t" |
| "mul.s $f16, $f2, $f15 \n\t" |
| "msub.s $f16, $f16, %[gain], $f11 \n\t" |
| "sub.s $f16, $f16, $f12 \n\t" |
| "madd.s $f14, $f16, $f4, $f15 \n\t" |
| "madd.s $f14, $f14, $f5, $f13 \n\t" |
| "swc1 $f8, 8(%[out]) \n\t" |
| "lwc1 $f6, 16(%[in]) \n\t" |
| "mul.s $f9, $f3, $f15 \n\t" |
| "mul.s $f7, $f2, $f16 \n\t" |
| "msub.s $f7, $f7, %[gain], $f6 \n\t" |
| "sub.s $f7, $f7, $f9 \n\t" |
| "madd.s $f8, $f7, $f4, $f16 \n\t" |
| "madd.s $f8, $f8, $f5, $f15 \n\t" |
| "swc1 $f14, 12(%[out]) \n\t" |
| "lwc1 $f11, 20(%[in]) \n\t" |
| "mul.s $f12, $f3, $f16 \n\t" |
| "mul.s $f13, $f2, $f7 \n\t" |
| "msub.s $f13, $f13, %[gain], $f11 \n\t" |
| "sub.s $f13, $f13, $f12 \n\t" |
| "madd.s $f14, $f13, $f4, $f7 \n\t" |
| "madd.s $f14, $f14, $f5, $f16 \n\t" |
| "swc1 $f8, 16(%[out]) \n\t" |
| "lwc1 $f6, 24(%[in]) \n\t" |
| "mul.s $f9, $f3, $f7 \n\t" |
| "mul.s $f15, $f2, $f13 \n\t" |
| "msub.s $f15, $f15, %[gain], $f6 \n\t" |
| "sub.s $f1, $f15, $f9 \n\t" |
| "madd.s $f8, $f1, $f4, $f13 \n\t" |
| "madd.s $f8, $f8, $f5, $f7 \n\t" |
| "swc1 $f14, 20(%[out]) \n\t" |
| "lwc1 $f11, 28(%[in]) \n\t" |
| "mul.s $f12, $f3, $f13 \n\t" |
| "mul.s $f16, $f2, $f1 \n\t" |
| "msub.s $f16, $f16, %[gain], $f11 \n\t" |
| "sub.s $f0, $f16, $f12 \n\t" |
| "madd.s $f14, $f0, $f4, $f1 \n\t" |
| "madd.s $f14, $f14, $f5, $f13 \n\t" |
| "swc1 $f8, 24(%[out]) \n\t" |
| PTR_ADDIU "%[out], 32 \n\t" |
| PTR_ADDIU "%[in], 32 \n\t" |
| "addiu %[n], -8 \n\t" |
| "swc1 $f14, -4(%[out]) \n\t" |
| "bnez %[n], ff_acelp_apply_order_2_transfer_function_madd%= \n\t" |
| "swc1 $f1, 4(%[mem]) \n\t" |
| "swc1 $f0, 0(%[mem]) \n\t" |
| |
| "ff_acelp_apply_order_2_transfer_function_end%=: \n\t" |
| |
| : [out] "+r" (out), |
| [in] "+r" (in), [gain] "+f" (gain), |
| [n] "+r" (n), [mem] "+r" (mem) |
| : [zero_coeffs] "r" (zero_coeffs), |
| [pole_coeffs] "r" (pole_coeffs) |
| : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", |
| "$f6", "$f7", "$f8", "$f9", "$f10", "$f11", |
| "$f12", "$f13", "$f14", "$f15", "$f16", "memory" |
| ); |
| } |
| #endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */ |
| #endif /* HAVE_INLINE_ASM */ |
| |
| void ff_acelp_filter_init_mips(ACELPFContext *c) |
| { |
| #if HAVE_INLINE_ASM |
| #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 |
| c->acelp_interpolatef = ff_acelp_interpolatef_mips; |
| c->acelp_apply_order_2_transfer_function = ff_acelp_apply_order_2_transfer_function_mips; |
| #endif |
| #endif |
| } |
