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FFmpeg/libavcodec/x86/mathops.h
Michael Niedermayer 9f088a1ed4 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  mpegvideo: reduce excessive inlining of mpeg_motion()
  mpegvideo: convert mpegvideo_common.h to a .c file
  build: factor out mpegvideo.o dependencies to CONFIG_MPEGVIDEO
  Move MASK_ABS macro to libavcodec/mathops.h
  x86: move MANGLE() and related macros to libavutil/x86/asm.h
  x86: rename libavutil/x86_cpu.h to libavutil/x86/asm.h
  aacdec: Don't fall back to the old output configuration when no old configuration is present.
  rtmp: Add message tracking
  rtsp: Support mpegts in raw udp packets
  rtsp: Support receiving plain data over UDP without any RTP encapsulation
  rtpdec: Remove an unused include
  rtpenc: Remove an av_abort() that depends on user-supplied data
  vsrc_movie: discourage its use with avconv.
  avconv: allow no input files.
  avconv: prevent invalid reads in transcode_init()
  avconv: rename OutputStream.is_past_recording_time to finished.

Conflicts:
	configure
	doc/filters.texi
	ffmpeg.c
	ffmpeg.h
	libavcodec/Makefile
	libavcodec/aacdec.c
	libavcodec/mpegvideo.c
	libavformat/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-08-09 19:31:56 +02:00

131 lines
3.1 KiB
C

/*
* 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"
#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;
__asm__ (
"imull %3 \n\t"
"shrdl %4, %%edx, %%eax \n\t"
:"=a"(rt), "=d"(dummy)
:"a"(a), "rm"(b), "ci"((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_CMOV
/* 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__ volatile(
"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;
}
#endif
#if HAVE_CMOV
#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
#define MASK_ABS(mask, level) \
__asm__ ("cltd \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){
__asm__ ("sarl %1, %0\n\t"
: "+r" (a)
: "ic" ((uint8_t)(-s))
);
return a;
}
#define NEG_USR32 NEG_USR32
static inline uint32_t NEG_USR32(uint32_t a, int8_t s){
__asm__ ("shrl %1, %0\n\t"
: "+r" (a)
: "ic" ((uint8_t)(-s))
);
return a;
}
#endif /* HAVE_INLINE_ASM */
#endif /* AVCODEC_X86_MATHOPS_H */