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fixed yv12toyuy2

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Originally committed as revision 2724 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
This commit is contained in:
Michael Niedermayer
2001-11-05 18:26:49 +00:00
parent ebbe52f1da
commit 42b5fcb890
3 changed files with 126 additions and 96 deletions
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33
postproc/rgb2rgb.c
View File

@ -291,11 +291,17 @@ void palette8torgb15(const uint8_t *src, uint8_t *dst, unsigned num_pixels, cons
} }
/** /**
* *
* num_pixels must be a multiple of 16 for the MMX version * width must be a multiple of 16 for the MMX version
*/ */
void yv12toyuy2(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst, unsigned num_pixels) void yv12toyuy2(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
int width, int height, int lumStride, int chromStride, int dstStride)
{ {
int y;
const int chromWidth= width>>1;
for(y=0; y<height; y++)
{
#ifdef HAVE_MMX #ifdef HAVE_MMX
//FIXME handle 2 lines a once (fewer prefetch, reuse some chrom, but very likely limited by mem anyway)
asm volatile( asm volatile(
"xorl %%eax, %%eax \n\t" "xorl %%eax, %%eax \n\t"
"1: \n\t" "1: \n\t"
@ -325,22 +331,31 @@ void yv12toyuy2(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, u
"addl $8, %%eax \n\t" "addl $8, %%eax \n\t"
"cmpl %4, %%eax \n\t" "cmpl %4, %%eax \n\t"
" jb 1b \n\t" " jb 1b \n\t"
EMMS" \n\t" ::"r"(dst), "r"(ysrc), "r"(usrc), "r"(vsrc), "r" (chromWidth)
SFENCE : "%eax"
::"r"(dst), "r"(ysrc), "r"(usrc), "r"(vsrc), "r" (num_pixels>>1)
: "memory", "%eax"
); );
#else #else
int i; int i;
num_pixels>>=1; for(i=0; i<chromWidth; i++)
for(i=0; i<num_pixels; i++)
{ {
dst[4*i+0] = ysrc[2*i+0]; dst[4*i+0] = ysrc[2*i+0];
dst[4*i+1] = usrc[i]; dst[4*i+1] = usrc[i];
dst[4*i+2] = ysrc[2*i+1]; dst[4*i+2] = ysrc[2*i+1];
dst[4*i+3] = vsrc[i]; dst[4*i+3] = vsrc[i];
} }
#endif
if(y&1)
{
usrc += chromStride;
vsrc += chromStride;
}
ysrc += lumStride;
dst += dstStride;
}
#ifdef HAVE_MMX
asm( EMMS" \n\t"
SFENCE" \n\t"
:::"memory");
#endif #endif
} }

4
postproc/rgb2rgb.h
View File

@ -21,8 +21,8 @@ extern void palette8torgb16(const uint8_t *src, uint8_t *dst, unsigned num_pixel
extern void palette8torgb15(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette); extern void palette8torgb15(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette);
extern void palette8torgb24(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette); extern void palette8torgb24(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette);
extern void yv12toyuy2(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst, unsigned num_pixels); extern void yv12toyuy2(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
int width, int height, int lumStride, int chromStride, int dstStride);
extern void yuy2toyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst, unsigned num_pixels); extern void yuy2toyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst, unsigned num_pixels);
#endif #endif

33
postproc/rgb2rgb_template.c
View File

@ -291,11 +291,17 @@ void palette8torgb15(const uint8_t *src, uint8_t *dst, unsigned num_pixels, cons
} }
/** /**
* *
* num_pixels must be a multiple of 16 for the MMX version * width must be a multiple of 16 for the MMX version
*/ */
void yv12toyuy2(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst, unsigned num_pixels) void yv12toyuy2(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
int width, int height, int lumStride, int chromStride, int dstStride)
{ {
int y;
const int chromWidth= width>>1;
for(y=0; y<height; y++)
{
#ifdef HAVE_MMX #ifdef HAVE_MMX
//FIXME handle 2 lines a once (fewer prefetch, reuse some chrom, but very likely limited by mem anyway)
asm volatile( asm volatile(
"xorl %%eax, %%eax \n\t" "xorl %%eax, %%eax \n\t"
"1: \n\t" "1: \n\t"
@ -325,22 +331,31 @@ void yv12toyuy2(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, u
"addl $8, %%eax \n\t" "addl $8, %%eax \n\t"
"cmpl %4, %%eax \n\t" "cmpl %4, %%eax \n\t"
" jb 1b \n\t" " jb 1b \n\t"
EMMS" \n\t" ::"r"(dst), "r"(ysrc), "r"(usrc), "r"(vsrc), "r" (chromWidth)
SFENCE : "%eax"
::"r"(dst), "r"(ysrc), "r"(usrc), "r"(vsrc), "r" (num_pixels>>1)
: "memory", "%eax"
); );
#else #else
int i; int i;
num_pixels>>=1; for(i=0; i<chromWidth; i++)
for(i=0; i<num_pixels; i++)
{ {
dst[4*i+0] = ysrc[2*i+0]; dst[4*i+0] = ysrc[2*i+0];
dst[4*i+1] = usrc[i]; dst[4*i+1] = usrc[i];
dst[4*i+2] = ysrc[2*i+1]; dst[4*i+2] = ysrc[2*i+1];
dst[4*i+3] = vsrc[i]; dst[4*i+3] = vsrc[i];
} }
#endif
if(y&1)
{
usrc += chromStride;
vsrc += chromStride;
}
ysrc += lumStride;
dst += dstStride;
}
#ifdef HAVE_MMX
asm( EMMS" \n\t"
SFENCE" \n\t"
:::"memory");
#endif #endif
} }