Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

13% faster yuv420 to rgb15 mmx.

Browse Source 
It is now faster than the old gpl version on conroe.

Originally committed as revision 31181 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
oldabi
Loren Merritt 15 years ago
parent 8d168a9207
commit 8a26b2c665
2 changed files with 19 additions and 21 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 3
      libswscale/x86/yuv2rgb_mmx.c
  2. 37
      libswscale/x86/yuv2rgb_template2.c

3
libswscale/x86/yuv2rgb_mmx.c
Unescape View File

@ -41,6 +41,9 @@
DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw) = 0x00ff00ff00ff00ffULL;
DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;
DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;
DECLARE_ASM_CONST(8, uint64_t, pb_e0) = 0xe0e0e0e0e0e0e0e0ULL;
DECLARE_ASM_CONST(8, uint64_t, pb_03) = 0x0303030303030303ULL;
DECLARE_ASM_CONST(8, uint64_t, pb_07) = 0x0707070707070707ULL;
//MMX versions
#undef RENAME

37
libswscale/x86/yuv2rgb_template2.c
Unescape View File

@ -162,31 +162,26 @@
__asm__ volatile (SFENCE"\n\t"EMMS); \
return srcSliceH; \
#define IF0(x)
#define IF1(x) x
#define RGB_PACK16(gmask, gshift, rshift) \
#define RGB_PACK16(gmask, is15) \
"pand "MANGLE(mmx_redmask)", %%mm0\n\t" \
"pand "MANGLE(mmx_redmask)", %%mm1\n\t" \
"movq %%mm2, %%mm3\n\t" \
"psllw $"AV_STRINGIFY(3-is15)", %%mm2\n\t" \
"psrlw $"AV_STRINGIFY(5+is15)", %%mm3\n\t" \
"psrlw $3, %%mm0\n\t" \
"pand "MANGLE(gmask)", %%mm2\n\t" \
"movq %%mm0, %%mm5\n\t" \
"movq %%mm1, %%mm6\n\t" \
"movq %%mm2, %%mm7\n\t" \
"punpcklbw %%mm4, %%mm0\n\t" \
"punpcklbw %%mm4, %%mm1\n\t" \
"punpcklbw %%mm4, %%mm2\n\t" \
"punpckhbw %%mm4, %%mm5\n\t" \
"punpckhbw %%mm4, %%mm6\n\t" \
"punpckhbw %%mm4, %%mm7\n\t" \
"psllw $"rshift", %%mm1\n\t" \
"psllw $"rshift", %%mm6\n\t" \
"psllw $"gshift", %%mm2\n\t" \
"psllw $"gshift", %%mm7\n\t" \
"por %%mm1, %%mm0\n\t" \
"por %%mm6, %%mm5\n\t" \
IF##is15("psrlw $1, %%mm1\n\t") \
"pand "MANGLE(pb_e0)", %%mm2\n\t" \
"pand "MANGLE(gmask)", %%mm3\n\t" \
"por %%mm2, %%mm0\n\t" \
"por %%mm7, %%mm5\n\t" \
"por %%mm3, %%mm1\n\t" \
"movq %%mm0, %%mm2\n\t" \
"punpcklbw %%mm1, %%mm0\n\t" \
"punpckhbw %%mm1, %%mm2\n\t" \
MOVNTQ " %%mm0, (%1)\n\t" \
MOVNTQ " %%mm5, 8(%1)\n\t" \
MOVNTQ " %%mm2, 8(%1)\n\t" \
#define DITHER_RGB \
"paddusb "BLUE_DITHER"(%4), %%mm0\n\t" \
@ -214,7 +209,7 @@ static inline int RENAME(yuv420_rgb15)(SwsContext *c, const uint8_t *src[],
#ifdef DITHER1XBPP
DITHER_RGB
#endif
RGB_PACK16(mmx_redmask, "2", "7")
RGB_PACK16(pb_03, 1)
YUV2RGB_ENDLOOP(2)
YUV2RGB_OPERANDS
@ -242,7 +237,7 @@ static inline int RENAME(yuv420_rgb16)(SwsContext *c, const uint8_t *src[],
#ifdef DITHER1XBPP
DITHER_RGB
#endif
RGB_PACK16(mmx_grnmask, "3", "8")
RGB_PACK16(pb_07, 0)
YUV2RGB_ENDLOOP(2)
YUV2RGB_OPERANDS

Write Preview
Loading…
Cancel
Save