| /* |
| * Copyright (c) 2011 Mans Rullgard <mans@mansr.com> |
| * |
| * 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 |
| */ |
| |
| #ifndef AVCODEC_ARM_DCA_H |
| #define AVCODEC_ARM_DCA_H |
| |
| #include <stdint.h> |
| |
| #include "config.h" |
| #include "libavcodec/mathops.h" |
| |
| #if HAVE_ARMV6_INLINE && AV_GCC_VERSION_AT_LEAST(4,4) && !CONFIG_THUMB |
| |
| #define decode_blockcodes decode_blockcodes |
| static inline int decode_blockcodes(int code1, int code2, int levels, |
| int32_t *values) |
| { |
| int32_t v0, v1, v2, v3, v4, v5; |
| |
| __asm__ ("smmul %0, %6, %10 \n" |
| "smmul %3, %7, %10 \n" |
| "smlabb %6, %0, %9, %6 \n" |
| "smlabb %7, %3, %9, %7 \n" |
| "smmul %1, %0, %10 \n" |
| "smmul %4, %3, %10 \n" |
| "sub %6, %6, %8, lsr #1 \n" |
| "sub %7, %7, %8, lsr #1 \n" |
| "smlabb %0, %1, %9, %0 \n" |
| "smlabb %3, %4, %9, %3 \n" |
| "smmul %2, %1, %10 \n" |
| "smmul %5, %4, %10 \n" |
| "str %6, [%11, #0] \n" |
| "str %7, [%11, #16] \n" |
| "sub %0, %0, %8, lsr #1 \n" |
| "sub %3, %3, %8, lsr #1 \n" |
| "smlabb %1, %2, %9, %1 \n" |
| "smlabb %4, %5, %9, %4 \n" |
| "smmul %6, %2, %10 \n" |
| "smmul %7, %5, %10 \n" |
| "str %0, [%11, #4] \n" |
| "str %3, [%11, #20] \n" |
| "sub %1, %1, %8, lsr #1 \n" |
| "sub %4, %4, %8, lsr #1 \n" |
| "smlabb %2, %6, %9, %2 \n" |
| "smlabb %5, %7, %9, %5 \n" |
| "str %1, [%11, #8] \n" |
| "str %4, [%11, #24] \n" |
| "sub %2, %2, %8, lsr #1 \n" |
| "sub %5, %5, %8, lsr #1 \n" |
| "str %2, [%11, #12] \n" |
| "str %5, [%11, #28] \n" |
| : "=&r"(v0), "=&r"(v1), "=&r"(v2), |
| "=&r"(v3), "=&r"(v4), "=&r"(v5), |
| "+&r"(code1), "+&r"(code2) |
| : "r"(levels - 1), "r"(-levels), |
| "r"(ff_inverse[levels]), "r"(values) |
| : "memory"); |
| |
| return code1 | code2; |
| } |
| |
| #endif |
| |
| #endif /* AVCODEC_ARM_DCA_H */ |
