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Diffstat (limited to 'media/ffvpx/libavcodec/x86/mathops.h')
| -rw-r--r-- | media/ffvpx/libavcodec/x86/mathops.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/x86/mathops.h b/media/ffvpx/libavcodec/x86/mathops.h new file mode 100644 index 0000000000..ca7e2dffc1 --- /dev/null +++ b/media/ffvpx/libavcodec/x86/mathops.h @@ -0,0 +1,153 @@ +/* + * simple math operations + * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al + * + * 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_X86_MATHOPS_H +#define AVCODEC_X86_MATHOPS_H + +#include "config.h" + +#include "libavutil/common.h" +#include "libavutil/x86/asm.h" + +#if HAVE_INLINE_ASM + +#if ARCH_X86_32 + +#define MULL MULL +static av_always_inline av_const int MULL(int a, int b, unsigned shift) +{ + int rt, dummy; + if (__builtin_constant_p(shift)) + __asm__ ( + "imull %3 \n\t" + "shrdl %4, %%edx, %%eax \n\t" + :"=a"(rt), "=d"(dummy) + :"a"(a), "rm"(b), "i"(shift & 0x1F) + ); + else + __asm__ ( + "imull %3 \n\t" + "shrdl %4, %%edx, %%eax \n\t" + :"=a"(rt), "=d"(dummy) + :"a"(a), "rm"(b), "c"((uint8_t)shift) + ); + return rt; +} + +#define MULH MULH +static av_always_inline av_const int MULH(int a, int b) +{ + int rt, dummy; + __asm__ ( + "imull %3" + :"=d"(rt), "=a"(dummy) + :"a"(a), "rm"(b) + ); + return rt; +} + +#define MUL64 MUL64 +static av_always_inline av_const int64_t MUL64(int a, int b) +{ + int64_t rt; + __asm__ ( + "imull %2" + :"=A"(rt) + :"a"(a), "rm"(b) + ); + return rt; +} + +#endif /* ARCH_X86_32 */ + +#if HAVE_I686 +/* median of 3 */ +#define mid_pred mid_pred +static inline av_const int mid_pred(int a, int b, int c) +{ + int i=b; + __asm__ ( + "cmp %2, %1 \n\t" + "cmovg %1, %0 \n\t" + "cmovg %2, %1 \n\t" + "cmp %3, %1 \n\t" + "cmovl %3, %1 \n\t" + "cmp %1, %0 \n\t" + "cmovg %1, %0 \n\t" + :"+&r"(i), "+&r"(a) + :"r"(b), "r"(c) + ); + return i; +} + +#if HAVE_6REGS +#define COPY3_IF_LT(x, y, a, b, c, d)\ +__asm__ volatile(\ + "cmpl %0, %3 \n\t"\ + "cmovl %3, %0 \n\t"\ + "cmovl %4, %1 \n\t"\ + "cmovl %5, %2 \n\t"\ + : "+&r" (x), "+&r" (a), "+r" (c)\ + : "r" (y), "r" (b), "r" (d)\ +); +#endif /* HAVE_6REGS */ + +#endif /* HAVE_I686 */ + +#define MASK_ABS(mask, level) \ + __asm__ ("cdq \n\t" \ + "xorl %1, %0 \n\t" \ + "subl %1, %0 \n\t" \ + : "+a"(level), "=&d"(mask)) + +// avoid +32 for shift optimization (gcc should do that ...) +#define NEG_SSR32 NEG_SSR32 +static inline int32_t NEG_SSR32( int32_t a, int8_t s){ + if (__builtin_constant_p(s)) + __asm__ ("sarl %1, %0\n\t" + : "+r" (a) + : "i" (-s & 0x1F) + ); + else + __asm__ ("sarl %1, %0\n\t" + : "+r" (a) + : "c" ((uint8_t)(-s)) + ); + return a; +} + +#define NEG_USR32 NEG_USR32 +static inline uint32_t NEG_USR32(uint32_t a, int8_t s){ + if (__builtin_constant_p(s)) + __asm__ ("shrl %1, %0\n\t" + : "+r" (a) + : "i" (-s & 0x1F) + ); + else + __asm__ ("shrl %1, %0\n\t" + : "+r" (a) + : "c" ((uint8_t)(-s)) + ); + return a; +} + +#endif /* HAVE_INLINE_ASM */ +#endif /* AVCODEC_X86_MATHOPS_H */ |