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Code Issues Releases Activity

move luma tc0 related init into asm

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5% faster filter_mb_fast() on P3

Originally committed as revision 6884 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2006-11-03 14:28:30 +00:00
parent 57aff88581
commit 38cfdc83f0
1 changed files with 17 additions and 12 deletions
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27
libavcodec/i386/h264dsp_mmx.c
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@ -377,10 +377,7 @@ static void ff_h264_idct8_dc_add_mmx2(uint8_t *dst, int16_t *block, int stride)
static inline void h264_loop_filter_luma_mmx2(uint8_t *pix, int stride, int alpha1, int beta1, int8_t *tc0)
{
uint64_t tmp0;
uint64_t tc = (uint8_t)tc0[1]*0x01010000 | (uint8_t)tc0[0]*0x0101;
// with luma, tc0=0 doesn't mean no filtering, so we need a separate input mask
uint32_t mask[2] = { (tc0[0]>=0)*0xffffffff, (tc0[1]>=0)*0xffffffff };
uint64_t tmp0[2];
asm volatile(
"movq (%1,%3), %%mm0 \n\t" //p1
@ -388,7 +385,15 @@ static inline void h264_loop_filter_luma_mmx2(uint8_t *pix, int stride, int alph
"movq (%2), %%mm2 \n\t" //q0
"movq (%2,%3), %%mm3 \n\t" //q1
H264_DEBLOCK_MASK(%6, %7)
"pand %5, %%mm7 \n\t"
"movd %5, %%mm4 \n\t"
"punpcklbw %%mm4, %%mm4 \n\t"
"punpcklwd %%mm4, %%mm4 \n\t"
"pcmpeqb %%mm3, %%mm3 \n\t"
"movq %%mm4, %%mm6 \n\t"
"pcmpgtb %%mm3, %%mm4 \n\t"
"movq %%mm6, 8+%0 \n\t"
"pand %%mm4, %%mm7 \n\t"
"movq %%mm7, %0 \n\t"
/* filter p1 */
@ -397,7 +402,7 @@ static inline void h264_loop_filter_luma_mmx2(uint8_t *pix, int stride, int alph
"pandn %%mm7, %%mm6 \n\t"
"pcmpeqb %%mm7, %%mm6 \n\t"
"pand %%mm7, %%mm6 \n\t" // mask & |p2-p0|<beta
"pshufw $80, %4, %%mm4 \n\t"
"movq 8+%0, %%mm4 \n\t"
"pand %%mm7, %%mm4 \n\t" // mask & tc0
"movq %%mm4, %%mm7 \n\t"
"psubb %%mm6, %%mm7 \n\t"
@ -410,21 +415,21 @@ static inline void h264_loop_filter_luma_mmx2(uint8_t *pix, int stride, int alph
"pandn %0, %%mm6 \n\t"
"pcmpeqb %0, %%mm6 \n\t"
"pand %0, %%mm6 \n\t"
"pshufw $80, %4, %%mm5 \n\t"
"movq 8+%0, %%mm5 \n\t"
"pand %%mm6, %%mm5 \n\t"
"psubb %%mm6, %%mm7 \n\t"
"movq (%2,%3), %%mm3 \n\t"
H264_DEBLOCK_Q1(%%mm3, %%mm4, "(%2,%3,2)", "(%2,%3)", %%mm5, %%mm6)
/* filter p0, q0 */
H264_DEBLOCK_P0_Q0(%8, %9)
H264_DEBLOCK_P0_Q0(%8, unused)
"movq %%mm1, (%1,%3,2) \n\t"
"movq %%mm2, (%2) \n\t"
: "=m"(tmp0)
: "=m"(*tmp0)
: "r"(pix-3*stride), "r"(pix), "r"((long)stride),
"m"(tc), "m"(*(uint64_t*)mask), "m"(alpha1), "m"(beta1),
"m"(mm_bone), "m"(ff_pb_3F)
"m"(*tmp0/*unused*/), "m"(*(uint32_t*)tc0), "m"(alpha1), "m"(beta1),
"m"(mm_bone)
);
}