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| author | Cédric Schieli <cschieli@gmail.com> | 2009-03-04 19:12:49 +0000 |
|---|---|---|
| committer | Cédric Schieli <cschieli@gmail.com> | 2009-03-04 19:12:49 +0000 |
| commit | a284d0309301a271f5114ccb83d2c31d19399a71 (patch) | |
| tree | 27722b1288cc0015cd5b6481c4d90dd8bacde9ef | |
| parent | 3444c9144111d117eba5fcfe5e544a62931534e5 (diff) | |
| download | ffmpeg-a284d0309301a271f5114ccb83d2c31d19399a71.tar.gz | |
Rewrite of rgb15to32 and rgb16to32 using fewer asm instructions and setting alpha channel to 0xFF
Originally committed as revision 28808 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
| -rw-r--r-- | libswscale/rgb2rgb_template.c | 61 |
1 files changed, 23 insertions, 38 deletions
diff --git a/libswscale/rgb2rgb_template.c b/libswscale/rgb2rgb_template.c index e95b628049..b03f6424f7 100644 --- a/libswscale/rgb2rgb_template.c +++ b/libswscale/rgb2rgb_template.c @@ -1202,6 +1202,25 @@ static inline void RENAME(rgb16tobgr24)(const uint8_t *src, uint8_t *dst, long s } } +/* + * mm0 = 00 B3 00 B2 00 B1 00 B0 + * mm1 = 00 G3 00 G2 00 G1 00 G0 + * mm2 = 00 R3 00 R2 00 R1 00 R0 + * mm6 = FF FF FF FF FF FF FF FF + * mm7 = 00 00 00 00 00 00 00 00 + */ +#define PACK_RGB32 \ + "packuswb %%mm7, %%mm0 \n\t" /* 00 00 00 00 B3 B2 B1 B0 */ \ + "packuswb %%mm7, %%mm1 \n\t" /* 00 00 00 00 G3 G2 G1 G0 */ \ + "packuswb %%mm7, %%mm2 \n\t" /* 00 00 00 00 R3 R2 R1 R0 */ \ + "punpcklbw %%mm1, %%mm0 \n\t" /* G3 B3 G2 B2 G1 B1 G0 B0 */ \ + "punpcklbw %%mm6, %%mm2 \n\t" /* FF R3 FF R2 FF R1 FF R0 */ \ + "movq %%mm0, %%mm3 \n\t" \ + "punpcklwd %%mm2, %%mm0 \n\t" /* FF R1 G1 B1 FF R0 G0 B0 */ \ + "punpckhwd %%mm2, %%mm3 \n\t" /* FF R3 G3 B3 FF R2 G2 B2 */ \ + MOVNTQ" %%mm0, %0 \n\t" \ + MOVNTQ" %%mm3, 8%0 \n\t" \ + static inline void RENAME(rgb15to32)(const uint8_t *src, uint8_t *dst, long src_size) { const uint16_t *end; @@ -1214,6 +1233,7 @@ static inline void RENAME(rgb15to32)(const uint8_t *src, uint8_t *dst, long src_ #if HAVE_MMX __asm__ volatile(PREFETCH" %0"::"m"(*s):"memory"); __asm__ volatile("pxor %%mm7,%%mm7 \n\t":::"memory"); + __asm__ volatile("pcmpeqd %%mm6,%%mm6 \n\t":::"memory"); mm_end = end - 3; while (s < mm_end) { @@ -1228,25 +1248,7 @@ static inline void RENAME(rgb15to32)(const uint8_t *src, uint8_t *dst, long src_ "psllq $3, %%mm0 \n\t" "psrlq $2, %%mm1 \n\t" "psrlq $7, %%mm2 \n\t" - "movq %%mm0, %%mm3 \n\t" - "movq %%mm1, %%mm4 \n\t" - "movq %%mm2, %%mm5 \n\t" - "punpcklwd %%mm7, %%mm0 \n\t" - "punpcklwd %%mm7, %%mm1 \n\t" - "punpcklwd %%mm7, %%mm2 \n\t" - "punpckhwd %%mm7, %%mm3 \n\t" - "punpckhwd %%mm7, %%mm4 \n\t" - "punpckhwd %%mm7, %%mm5 \n\t" - "psllq $8, %%mm1 \n\t" - "psllq $16, %%mm2 \n\t" - "por %%mm1, %%mm0 \n\t" - "por %%mm2, %%mm0 \n\t" - "psllq $8, %%mm4 \n\t" - "psllq $16, %%mm5 \n\t" - "por %%mm4, %%mm3 \n\t" - "por %%mm5, %%mm3 \n\t" - MOVNTQ" %%mm0, %0 \n\t" - MOVNTQ" %%mm3, 8%0 \n\t" + PACK_RGB32 :"=m"(*d) :"m"(*s),"m"(mask15b),"m"(mask15g),"m"(mask15r) :"memory"); @@ -1292,6 +1294,7 @@ static inline void RENAME(rgb16to32)(const uint8_t *src, uint8_t *dst, long src_ #if HAVE_MMX __asm__ volatile(PREFETCH" %0"::"m"(*s):"memory"); __asm__ volatile("pxor %%mm7,%%mm7 \n\t":::"memory"); + __asm__ volatile("pcmpeqd %%mm6,%%mm6 \n\t":::"memory"); mm_end = end - 3; while (s < mm_end) { @@ -1306,25 +1309,7 @@ static inline void RENAME(rgb16to32)(const uint8_t *src, uint8_t *dst, long src_ "psllq $3, %%mm0 \n\t" "psrlq $3, %%mm1 \n\t" "psrlq $8, %%mm2 \n\t" - "movq %%mm0, %%mm3 \n\t" - "movq %%mm1, %%mm4 \n\t" - "movq %%mm2, %%mm5 \n\t" - "punpcklwd %%mm7, %%mm0 \n\t" - "punpcklwd %%mm7, %%mm1 \n\t" - "punpcklwd %%mm7, %%mm2 \n\t" - "punpckhwd %%mm7, %%mm3 \n\t" - "punpckhwd %%mm7, %%mm4 \n\t" - "punpckhwd %%mm7, %%mm5 \n\t" - "psllq $8, %%mm1 \n\t" - "psllq $16, %%mm2 \n\t" - "por %%mm1, %%mm0 \n\t" - "por %%mm2, %%mm0 \n\t" - "psllq $8, %%mm4 \n\t" - "psllq $16, %%mm5 \n\t" - "por %%mm4, %%mm3 \n\t" - "por %%mm5, %%mm3 \n\t" - MOVNTQ" %%mm0, %0 \n\t" - MOVNTQ" %%mm3, 8%0 \n\t" + PACK_RGB32 :"=m"(*d) :"m"(*s),"m"(mask16b),"m"(mask16g),"m"(mask16r) :"memory"); |