virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-11-26 19:01:44 +02:00
Code Issues Releases Activity

16bpp is 10% faster

Browse Source 
Originally committed as revision 2737 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
This commit is contained in:
Michael Niedermayer 2001-11-06 13:41:12 +00:00
parent 607379b38b
commit 7ad16638de
1 changed files with 11 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
postproc/yuv2rgb_template.c
View File

@ -36,6 +36,7 @@
#include <inttypes.h>
#include "rgb2rgb.h"
#include "../mmx_defs.h"
/* hope these constant values are cache line aligned */
uint64_t mmx_80w = 0x0080008000800080;
@ -52,23 +53,6 @@ uint64_t mmx_V_green = 0xe5fce5fce5fce5fc;
/* hope these constant values are cache line aligned */
uint64_t mmx_redmask = 0xf8f8f8f8f8f8f8f8;
uint64_t mmx_grnmask = 0xfcfcfcfcfcfcfcfc;
uint64_t mmx_grnshift = 0x03;
uint64_t mmx_blueshift = 0x03;
#ifdef HAVE_MMX2
/* use this for K7 and p3 only */
#define MOVNTQ "movntq"
#else
/* for MMX-only processors */
#define MOVNTQ "movq"
#endif
#if !defined( HAVE_MMX2) && defined( HAVE_3DNOW)
/* for K6 2/2+/3 */
#define EMMS "femms;"
#else
#define EMMS "emms;"
#endif
#define YUV2RGB \
/* Do the multiply part of the conversion for even and odd pixels,
@ -174,6 +158,12 @@ static void yuv420_rgb16_mmx (uint8_t * image, uint8_t * py,
pixels in each iteration */
__asm__ __volatile__ (
/* no speed diference on my p3@500 with prefetch,
* if it is faster for anyone with -benchmark then tell me
PREFETCH" 64(%0) \n\t"
PREFETCH" 64(%1) \n\t"
PREFETCH" 64(%2) \n\t"
*/
YUV2RGB
/* mask unneeded bits off */
@ -181,7 +171,7 @@ YUV2RGB
"pand mmx_grnmask, %%mm2;" /* g7g6g5g4 g3g2_0_0 g7g6g5g4 g3g2_0_0 */
"pand mmx_redmask, %%mm1;" /* r7r6r5r4 r3_0_0_0 r7r6r5r4 r3_0_0_0 */
"psrlw mmx_blueshift,%%mm0;" /* 0_0_0_b7 b6b5b4b3 0_0_0_b7 b6b5b4b3 */
"psrlw $3,%%mm0;" /* 0_0_0_b7 b6b5b4b3 0_0_0_b7 b6b5b4b3 */
"pxor %%mm4, %%mm4;" /* zero mm4 */
"movq %%mm0, %%mm5;" /* Copy B7-B0 */
@ -191,7 +181,7 @@ YUV2RGB
"punpcklbw %%mm4, %%mm2;" /* 0_0_0_0 0_0_0_0 g7g6g5g4 g3g2_0_0 */
"punpcklbw %%mm1, %%mm0;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */
"psllw mmx_blueshift,%%mm2;" /* 0_0_0_0 0_g7g6g5 g4g3g2_0 0_0_0_0 */
"psllw $3, %%mm2;" /* 0_0_0_0 0_g7g6g5 g4g3g2_0 0_0_0_0 */
"por %%mm2, %%mm0;" /* r7r6r5r4 r3g7g6g5 g4g3g2b7 b6b5b4b3 */
"movq 8 (%0), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
@ -201,7 +191,7 @@ YUV2RGB
"punpckhbw %%mm4, %%mm7;" /* 0_0_0_0 0_0_0_0 g7g6g5g4 g3g2_0_0 */
"punpckhbw %%mm1, %%mm5;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */
"psllw mmx_blueshift,%%mm7;" /* 0_0_0_0 0_g7g6g5 g4g3g2_0 0_0_0_0 */
"psllw $3, %%mm7;" /* 0_0_0_0 0_g7g6g5 g4g3g2_0 0_0_0_0 */
"movd 4 (%1), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
"por %%mm7, %%mm5;" /* r7r6r5r4 r3g7g6g5 g4g3g2b7 b6b5b4b3 */
@ -266,7 +256,7 @@ YUV2RGB
"pand mmx_redmask, %%mm2;" /* g7g6g5g4 g3_0_0_0 g7g6g5g4 g3_0_0_0 */
"pand mmx_redmask, %%mm1;" /* r7r6r5r4 r3_0_0_0 r7r6r5r4 r3_0_0_0 */
"psrlw mmx_blueshift,%%mm0;" /* 0_0_0_b7 b6b5b4b3 0_0_0_b7 b6b5b4b3 */
"psrlw $3,%%mm0;" /* 0_0_0_b7 b6b5b4b3 0_0_0_b7 b6b5b4b3 */
"psrlw $1,%%mm1;" /* 0_r7r6r5 r4r3_0_0 0_r7r6r5 r4r3_0_0 */
"pxor %%mm4, %%mm4;" /* zero mm4 */
@ -521,7 +511,6 @@ YUV2RGB
yuv2rgb_fun yuv2rgb_init_mmx (int bpp, int mode)
{
// if (bpp == 15 || bpp == 16) {
if (bpp == 15 && mode == MODE_RGB) return yuv420_rgb15_mmx;
if (bpp == 16 && mode == MODE_RGB) return yuv420_rgb16_mmx;
if (bpp == 24 && mode == MODE_RGB) return yuv420_rgb24_mmx;