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FFmpeg/libavcodec/x86/motion_est.c
Diego Biurrun a0c5917f86 Drop Snow codec 
Snow is a toy codec with no real-world use and horrible code.
2013-01-06 16:30:02 +01:00

474 lines
16 KiB
C
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/*
* MMX optimized motion estimation
* Copyright (c) 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer
*
* mostly by Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "libavutil/x86/asm.h"
#include "libavcodec/dsputil.h"
#include "dsputil_mmx.h"
#if HAVE_INLINE_ASM
DECLARE_ASM_CONST(8, uint64_t, round_tab)[3]={
0x0000000000000000ULL,
0x0001000100010001ULL,
0x0002000200020002ULL,
};
DECLARE_ASM_CONST(8, uint64_t, bone)= 0x0101010101010101LL;
static inline void sad8_1_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)
{
x86_reg len= -(stride*h);
__asm__ volatile(
".p2align 4 \n\t"
"1: \n\t"
"movq (%1, %%"REG_a"), %%mm0 \n\t"
"movq (%2, %%"REG_a"), %%mm2 \n\t"
"movq (%2, %%"REG_a"), %%mm4 \n\t"
"add %3, %%"REG_a" \n\t"
"psubusb %%mm0, %%mm2 \n\t"
"psubusb %%mm4, %%mm0 \n\t"
"movq (%1, %%"REG_a"), %%mm1 \n\t"
"movq (%2, %%"REG_a"), %%mm3 \n\t"
"movq (%2, %%"REG_a"), %%mm5 \n\t"
"psubusb %%mm1, %%mm3 \n\t"
"psubusb %%mm5, %%mm1 \n\t"
"por %%mm2, %%mm0 \n\t"
"por %%mm1, %%mm3 \n\t"
"movq %%mm0, %%mm1 \n\t"
"movq %%mm3, %%mm2 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpckhbw %%mm7, %%mm1 \n\t"
"punpcklbw %%mm7, %%mm3 \n\t"
"punpckhbw %%mm7, %%mm2 \n\t"
"paddw %%mm1, %%mm0 \n\t"
"paddw %%mm3, %%mm2 \n\t"
"paddw %%mm2, %%mm0 \n\t"
"paddw %%mm0, %%mm6 \n\t"
"add %3, %%"REG_a" \n\t"
" js 1b \n\t"
: "+a" (len)
: "r" (blk1 - len), "r" (blk2 - len), "r" ((x86_reg)stride)
);
}
static inline void sad8_1_mmxext(uint8_t *blk1, uint8_t *blk2,
int stride, int h)
{
__asm__ volatile(
".p2align 4 \n\t"
"1: \n\t"
"movq (%1), %%mm0 \n\t"
"movq (%1, %3), %%mm1 \n\t"
"psadbw (%2), %%mm0 \n\t"
"psadbw (%2, %3), %%mm1 \n\t"
"paddw %%mm0, %%mm6 \n\t"
"paddw %%mm1, %%mm6 \n\t"
"lea (%1,%3,2), %1 \n\t"
"lea (%2,%3,2), %2 \n\t"
"sub $2, %0 \n\t"
" jg 1b \n\t"
: "+r" (h), "+r" (blk1), "+r" (blk2)
: "r" ((x86_reg)stride)
);
}
static int sad16_sse2(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)
{
int ret;
__asm__ volatile(
"pxor %%xmm2, %%xmm2 \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movdqu (%1), %%xmm0 \n\t"
"movdqu (%1, %4), %%xmm1 \n\t"
"psadbw (%2), %%xmm0 \n\t"
"psadbw (%2, %4), %%xmm1 \n\t"
"paddw %%xmm0, %%xmm2 \n\t"
"paddw %%xmm1, %%xmm2 \n\t"
"lea (%1,%4,2), %1 \n\t"
"lea (%2,%4,2), %2 \n\t"
"sub $2, %0 \n\t"
" jg 1b \n\t"
"movhlps %%xmm2, %%xmm0 \n\t"
"paddw %%xmm0, %%xmm2 \n\t"
"movd %%xmm2, %3 \n\t"
: "+r" (h), "+r" (blk1), "+r" (blk2), "=r"(ret)
: "r" ((x86_reg)stride)
);
return ret;
}
static inline void sad8_x2a_mmxext(uint8_t *blk1, uint8_t *blk2,
int stride, int h)
{
__asm__ volatile(
".p2align 4 \n\t"
"1: \n\t"
"movq (%1), %%mm0 \n\t"
"movq (%1, %3), %%mm1 \n\t"
"pavgb 1(%1), %%mm0 \n\t"
"pavgb 1(%1, %3), %%mm1 \n\t"
"psadbw (%2), %%mm0 \n\t"
"psadbw (%2, %3), %%mm1 \n\t"
"paddw %%mm0, %%mm6 \n\t"
"paddw %%mm1, %%mm6 \n\t"
"lea (%1,%3,2), %1 \n\t"
"lea (%2,%3,2), %2 \n\t"
"sub $2, %0 \n\t"
" jg 1b \n\t"
: "+r" (h), "+r" (blk1), "+r" (blk2)
: "r" ((x86_reg)stride)
);
}
static inline void sad8_y2a_mmxext(uint8_t *blk1, uint8_t *blk2,
int stride, int h)
{
__asm__ volatile(
"movq (%1), %%mm0 \n\t"
"add %3, %1 \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%1), %%mm1 \n\t"
"movq (%1, %3), %%mm2 \n\t"
"pavgb %%mm1, %%mm0 \n\t"
"pavgb %%mm2, %%mm1 \n\t"
"psadbw (%2), %%mm0 \n\t"
"psadbw (%2, %3), %%mm1 \n\t"
"paddw %%mm0, %%mm6 \n\t"
"paddw %%mm1, %%mm6 \n\t"
"movq %%mm2, %%mm0 \n\t"
"lea (%1,%3,2), %1 \n\t"
"lea (%2,%3,2), %2 \n\t"
"sub $2, %0 \n\t"
" jg 1b \n\t"
: "+r" (h), "+r" (blk1), "+r" (blk2)
: "r" ((x86_reg)stride)
);
}
static inline void sad8_4_mmxext(uint8_t *blk1, uint8_t *blk2,
int stride, int h)
{
__asm__ volatile(
"movq "MANGLE(bone)", %%mm5 \n\t"
"movq (%1), %%mm0 \n\t"
"pavgb 1(%1), %%mm0 \n\t"
"add %3, %1 \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%1), %%mm1 \n\t"
"movq (%1,%3), %%mm2 \n\t"
"pavgb 1(%1), %%mm1 \n\t"
"pavgb 1(%1,%3), %%mm2 \n\t"
"psubusb %%mm5, %%mm1 \n\t"
"pavgb %%mm1, %%mm0 \n\t"
"pavgb %%mm2, %%mm1 \n\t"
"psadbw (%2), %%mm0 \n\t"
"psadbw (%2,%3), %%mm1 \n\t"
"paddw %%mm0, %%mm6 \n\t"
"paddw %%mm1, %%mm6 \n\t"
"movq %%mm2, %%mm0 \n\t"
"lea (%1,%3,2), %1 \n\t"
"lea (%2,%3,2), %2 \n\t"
"sub $2, %0 \n\t"
" jg 1b \n\t"
: "+r" (h), "+r" (blk1), "+r" (blk2)
: "r" ((x86_reg)stride)
);
}
static inline void sad8_2_mmx(uint8_t *blk1a, uint8_t *blk1b, uint8_t *blk2, int stride, int h)
{
x86_reg len= -(stride*h);
__asm__ volatile(
".p2align 4 \n\t"
"1: \n\t"
"movq (%1, %%"REG_a"), %%mm0 \n\t"
"movq (%2, %%"REG_a"), %%mm1 \n\t"
"movq (%1, %%"REG_a"), %%mm2 \n\t"
"movq (%2, %%"REG_a"), %%mm3 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpcklbw %%mm7, %%mm1 \n\t"
"punpckhbw %%mm7, %%mm2 \n\t"
"punpckhbw %%mm7, %%mm3 \n\t"
"paddw %%mm0, %%mm1 \n\t"
"paddw %%mm2, %%mm3 \n\t"
"movq (%3, %%"REG_a"), %%mm4 \n\t"
"movq (%3, %%"REG_a"), %%mm2 \n\t"
"paddw %%mm5, %%mm1 \n\t"
"paddw %%mm5, %%mm3 \n\t"
"psrlw $1, %%mm1 \n\t"
"psrlw $1, %%mm3 \n\t"
"packuswb %%mm3, %%mm1 \n\t"
"psubusb %%mm1, %%mm4 \n\t"
"psubusb %%mm2, %%mm1 \n\t"
"por %%mm4, %%mm1 \n\t"
"movq %%mm1, %%mm0 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpckhbw %%mm7, %%mm1 \n\t"
"paddw %%mm1, %%mm0 \n\t"
"paddw %%mm0, %%mm6 \n\t"
"add %4, %%"REG_a" \n\t"
" js 1b \n\t"
: "+a" (len)
: "r" (blk1a - len), "r" (blk1b -len), "r" (blk2 - len), "r" ((x86_reg)stride)
);
}
static inline void sad8_4_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)
{
x86_reg len= -(stride*h);
__asm__ volatile(
"movq (%1, %%"REG_a"), %%mm0 \n\t"
"movq 1(%1, %%"REG_a"), %%mm2 \n\t"
"movq %%mm0, %%mm1 \n\t"
"movq %%mm2, %%mm3 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpckhbw %%mm7, %%mm1 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
"punpckhbw %%mm7, %%mm3 \n\t"
"paddw %%mm2, %%mm0 \n\t"
"paddw %%mm3, %%mm1 \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%2, %%"REG_a"), %%mm2 \n\t"
"movq 1(%2, %%"REG_a"), %%mm4 \n\t"
"movq %%mm2, %%mm3 \n\t"
"movq %%mm4, %%mm5 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
"punpckhbw %%mm7, %%mm3 \n\t"
"punpcklbw %%mm7, %%mm4 \n\t"
"punpckhbw %%mm7, %%mm5 \n\t"
"paddw %%mm4, %%mm2 \n\t"
"paddw %%mm5, %%mm3 \n\t"
"movq 16+"MANGLE(round_tab)", %%mm5 \n\t"
"paddw %%mm2, %%mm0 \n\t"
"paddw %%mm3, %%mm1 \n\t"
"paddw %%mm5, %%mm0 \n\t"
"paddw %%mm5, %%mm1 \n\t"
"movq (%3, %%"REG_a"), %%mm4 \n\t"
"movq (%3, %%"REG_a"), %%mm5 \n\t"
"psrlw $2, %%mm0 \n\t"
"psrlw $2, %%mm1 \n\t"
"packuswb %%mm1, %%mm0 \n\t"
"psubusb %%mm0, %%mm4 \n\t"
"psubusb %%mm5, %%mm0 \n\t"
"por %%mm4, %%mm0 \n\t"
"movq %%mm0, %%mm4 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpckhbw %%mm7, %%mm4 \n\t"
"paddw %%mm0, %%mm6 \n\t"
"paddw %%mm4, %%mm6 \n\t"
"movq %%mm2, %%mm0 \n\t"
"movq %%mm3, %%mm1 \n\t"
"add %4, %%"REG_a" \n\t"
" js 1b \n\t"
: "+a" (len)
: "r" (blk1 - len), "r" (blk1 -len + stride), "r" (blk2 - len), "r" ((x86_reg)stride)
);
}
static inline int sum_mmx(void)
{
int ret;
__asm__ volatile(
"movq %%mm6, %%mm0 \n\t"
"psrlq $32, %%mm6 \n\t"
"paddw %%mm0, %%mm6 \n\t"
"movq %%mm6, %%mm0 \n\t"
"psrlq $16, %%mm6 \n\t"
"paddw %%mm0, %%mm6 \n\t"
"movd %%mm6, %0 \n\t"
: "=r" (ret)
);
return ret&0xFFFF;
}
static inline int sum_mmxext(void)
{
int ret;
__asm__ volatile(
"movd %%mm6, %0 \n\t"
: "=r" (ret)
);
return ret;
}
static inline void sad8_x2a_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)
{
sad8_2_mmx(blk1, blk1+1, blk2, stride, h);
}
static inline void sad8_y2a_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)
{
sad8_2_mmx(blk1, blk1+stride, blk2, stride, h);
}
#define PIX_SAD(suf)\
static int sad8_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\
{\
assert(h==8);\
__asm__ volatile("pxor %%mm7, %%mm7 \n\t"\
"pxor %%mm6, %%mm6 \n\t":);\
\
sad8_1_ ## suf(blk1, blk2, stride, 8);\
\
return sum_ ## suf();\
}\
static int sad8_x2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\
{\
assert(h==8);\
__asm__ volatile("pxor %%mm7, %%mm7 \n\t"\
"pxor %%mm6, %%mm6 \n\t"\
"movq %0, %%mm5 \n\t"\
:: "m"(round_tab[1]) \
);\
\
sad8_x2a_ ## suf(blk1, blk2, stride, 8);\
\
return sum_ ## suf();\
}\
\
static int sad8_y2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\
{\
assert(h==8);\
__asm__ volatile("pxor %%mm7, %%mm7 \n\t"\
"pxor %%mm6, %%mm6 \n\t"\
"movq %0, %%mm5 \n\t"\
:: "m"(round_tab[1]) \
);\
\
sad8_y2a_ ## suf(blk1, blk2, stride, 8);\
\
return sum_ ## suf();\
}\
\
static int sad8_xy2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\
{\
assert(h==8);\
__asm__ volatile("pxor %%mm7, %%mm7 \n\t"\
"pxor %%mm6, %%mm6 \n\t"\
::);\
\
sad8_4_ ## suf(blk1, blk2, stride, 8);\
\
return sum_ ## suf();\
}\
\
static int sad16_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\
{\
__asm__ volatile("pxor %%mm7, %%mm7 \n\t"\
"pxor %%mm6, %%mm6 \n\t":);\
\
sad8_1_ ## suf(blk1 , blk2 , stride, h);\
sad8_1_ ## suf(blk1+8, blk2+8, stride, h);\
\
return sum_ ## suf();\
}\
static int sad16_x2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\
{\
__asm__ volatile("pxor %%mm7, %%mm7 \n\t"\
"pxor %%mm6, %%mm6 \n\t"\
"movq %0, %%mm5 \n\t"\
:: "m"(round_tab[1]) \
);\
\
sad8_x2a_ ## suf(blk1 , blk2 , stride, h);\
sad8_x2a_ ## suf(blk1+8, blk2+8, stride, h);\
\
return sum_ ## suf();\
}\
static int sad16_y2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\
{\
__asm__ volatile("pxor %%mm7, %%mm7 \n\t"\
"pxor %%mm6, %%mm6 \n\t"\
"movq %0, %%mm5 \n\t"\
:: "m"(round_tab[1]) \
);\
\
sad8_y2a_ ## suf(blk1 , blk2 , stride, h);\
sad8_y2a_ ## suf(blk1+8, blk2+8, stride, h);\
\
return sum_ ## suf();\
}\
static int sad16_xy2_ ## suf(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)\
{\
__asm__ volatile("pxor %%mm7, %%mm7 \n\t"\
"pxor %%mm6, %%mm6 \n\t"\
::);\
\
sad8_4_ ## suf(blk1 , blk2 , stride, h);\
sad8_4_ ## suf(blk1+8, blk2+8, stride, h);\
\
return sum_ ## suf();\
}\
PIX_SAD(mmx)
PIX_SAD(mmxext)
#endif /* HAVE_INLINE_ASM */
void ff_dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx)
{
#if HAVE_INLINE_ASM
int mm_flags = av_get_cpu_flags();
if (mm_flags & AV_CPU_FLAG_MMX) {
c->pix_abs[0][0] = sad16_mmx;
c->pix_abs[0][1] = sad16_x2_mmx;
c->pix_abs[0][2] = sad16_y2_mmx;
c->pix_abs[0][3] = sad16_xy2_mmx;
c->pix_abs[1][0] = sad8_mmx;
c->pix_abs[1][1] = sad8_x2_mmx;
c->pix_abs[1][2] = sad8_y2_mmx;
c->pix_abs[1][3] = sad8_xy2_mmx;
c->sad[0]= sad16_mmx;
c->sad[1]= sad8_mmx;
}
if (mm_flags & AV_CPU_FLAG_MMXEXT) {
c->pix_abs[0][0] = sad16_mmxext;
c->pix_abs[1][0] = sad8_mmxext;
c->sad[0] = sad16_mmxext;
c->sad[1] = sad8_mmxext;
if(!(avctx->flags & CODEC_FLAG_BITEXACT)){
c->pix_abs[0][1] = sad16_x2_mmxext;
c->pix_abs[0][2] = sad16_y2_mmxext;
c->pix_abs[0][3] = sad16_xy2_mmxext;
c->pix_abs[1][1] = sad8_x2_mmxext;
c->pix_abs[1][2] = sad8_y2_mmxext;
c->pix_abs[1][3] = sad8_xy2_mmxext;
}
}
if ((mm_flags & AV_CPU_FLAG_SSE2) && !(mm_flags & AV_CPU_FLAG_3DNOW)) {
c->sad[0]= sad16_sse2;
}
#endif /* HAVE_INLINE_ASM */
}
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