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ffmpeg.wasm-core
Commit 38858470 authored by Michael Niedermayer's avatar Michael Niedermayer
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yv12 to yv12 scaler 

someone who knows a bit about vo_odivx could add support for it ...

Originally committed as revision 2520 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
parent 494a6294
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Showing with 85 additions and 46 deletions
postproc/swscale.c
View file @ 38858470
......@@ -440,6 +440,31 @@ static int canMMX2BeUsed=0;
" jb 1b \n\t"
static inline void yuv2yuv(uint16_t *buf0, uint16_t *buf1, uint16_t *uvbuf0, uint16_t *uvbuf1,
uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstw, int yalpha, int uvalpha)
{
int yalpha1=yalpha^4095;
int uvalpha1=uvalpha^4095;
int i;
for(i=0;i<dstw;i++)
{
((uint8_t*)dest)[0] = (buf0[i]*yalpha1+buf1[i]*yalpha)>>19;
dest++;
}
if(uvalpha != -1)
{
for(i=0; i<dstw/2; i++)
{
((uint8_t*)uDest)[0] = (uvbuf0[i]*uvalpha1+uvbuf1[i]*uvalpha)>>19;
((uint8_t*)vDest)[0] = (uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19;
uDest++;
vDest++;
}
}
}
/**
* vertical scale YV12 to RGB
*/
......@@ -1126,13 +1151,13 @@ FUNNYUVCODE
}
// *** bilinear scaling and yuv->rgb conversion of yv12 slices:
// *** bilinear scaling and yuv->rgb or yuv->yuv conversion of yv12 slices:
// *** Note: it's called multiple times while decoding a frame, first time y==0
// *** Designed to upscale, but may work for downscale too.
// s_xinc = (src_width << 16) / dst_width
// s_yinc = (src_height << 16) / dst_height
void SwScale_YV12slice_brg24(unsigned char* srcptr[],int stride[], int y, int h,
unsigned char* dstptr, int dststride, int dstw, int dstbpp,
void SwScale_YV12slice(unsigned char* srcptr[],int stride[], int y, int h,
uint8_t* dstptr[], int dststride, int dstw, int dstbpp,
unsigned int s_xinc,unsigned int s_yinc){
// scaling factors:
......@@ -1172,8 +1197,8 @@ canMMX2BeUsed= (s_xinc <= 0x10000 && (dstw&31)==0 && (srcWidth&15)==0) ? 1 : 0;
if(canMMX2BeUsed) s_xinc+= 20;
else s_xinc = ((srcWidth-2)<<16)/(dstw-2) - 20;
if(fullUVIpol) s_xinc2= s_xinc>>1;
else s_xinc2= s_xinc;
if(fullUVIpol && !dstbpp==12) s_xinc2= s_xinc>>1;
else s_xinc2= s_xinc;
// force calculation of the horizontal interpolation of the first line
if(y==0){
......@@ -1318,10 +1343,14 @@ else s_xinc2= s_xinc;
} // reset counters
while(1){
unsigned char *dest=dstptr+dststride*s_ypos;
unsigned char *dest =dstptr[0]+dststride*s_ypos;
unsigned char *uDest=dstptr[1]+(dststride>>1)*(s_ypos>>1);
unsigned char *vDest=dstptr[2]+(dststride>>1)*(s_ypos>>1);
int y0=(s_srcypos + 0xFFFF)>>16; // first luminance source line number below the dst line
// points to the dst Pixels center in the source (0 is the center of pixel 0,0 in src)
int srcuvpos= s_srcypos + s_yinc/2 - 0x8000;
int srcuvpos= dstbpp==12 ? s_srcypos + s_yinc/2 - 0x8000 :
s_srcypos - 0x8000;
int y1=(srcuvpos + 0x1FFFF)>>17; // first chrominance source line number below the dst line
int yalpha=((s_srcypos-1)&0xFFFF)>>4;
int uvalpha=((srcuvpos-1)&0x1FFFF)>>5;
......@@ -1333,18 +1362,7 @@ else s_xinc2= s_xinc;
if(y0>=y+h) break; // FIXME wrong, skips last lines, but they are dupliactes anyway
// if this is after the last line than use only the last src line
/* if(y0>=y+h)
{
buf1= buf0;
s_last_ypos=y0;
}
if(y1>=(y+h)/2)
{
uvbuf1= uvbuf0;
s_last_y1pos=y1;
}
*/
if((y0&1) && dstbpp==12) uvalpha=-1; // there is no alpha if there is no line
s_ypos++; s_srcypos+=s_yinc;
......@@ -1404,8 +1422,9 @@ else s_xinc2= s_xinc;
s_last_y1pos= MIN(y1, y/2+h/2-1);
}
if(ABS(s_yinc - 0x10000) < 10)
if(dstbpp==12) //YV12
yuv2yuv(buf0, buf1, uvbuf0, uvbuf1, dest, uDest, vDest, dstw, yalpha, uvalpha);
else if(ABS(s_yinc - 0x10000) < 10)
yuv2rgb1(buf0, buf1, uvbuf0, uvbuf1, dest, dstw, yalpha, uvalpha, dstbpp);
else
yuv2rgbX(buf0, buf1, uvbuf0, uvbuf1, dest, dstw, yalpha, uvalpha, dstbpp);
......
postproc/swscale.h
View file @ 38858470
// *** bilinear scaling and yuv->rgb conversion of yv12 slices:
// *** bilinear scaling and yuv->rgb & yuv->yuv conversion of yv12 slices:
// *** Note: it's called multiple times while decoding a frame, first time y==0
// *** Designed to upscale, but may work for downscale too.
// s_xinc = (src_width << 8) / dst_width
// s_yinc = (src_height << 16) / dst_height
void SwScale_YV12slice_brg24(unsigned char* srcptr[],int stride[], int y, int h,
unsigned char* dstptr, int dststride, int dstw, int dstbpp,
unsigned int s_xinc,unsigned int s_yinc);
// dstbpp == 12 -> yv12 output
void SwScale_YV12slice(unsigned char* srcptr[],int stride[], int y, int h,
uint8_t* dstptr[], int dststride, int dstw, int dstbpp,
unsigned int s_xinc,unsigned int s_yinc);
// generating tables
void SwScale_Init();
postproc/swscale_template.c
View file @ 38858470
......@@ -440,6 +440,31 @@ static int canMMX2BeUsed=0;
" jb 1b \n\t"
static inline void yuv2yuv(uint16_t *buf0, uint16_t *buf1, uint16_t *uvbuf0, uint16_t *uvbuf1,
uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstw, int yalpha, int uvalpha)
{
int yalpha1=yalpha^4095;
int uvalpha1=uvalpha^4095;
int i;
for(i=0;i<dstw;i++)
{
((uint8_t*)dest)[0] = (buf0[i]*yalpha1+buf1[i]*yalpha)>>19;
dest++;
}
if(uvalpha != -1)
{
for(i=0; i<dstw/2; i++)
{
((uint8_t*)uDest)[0] = (uvbuf0[i]*uvalpha1+uvbuf1[i]*uvalpha)>>19;
((uint8_t*)vDest)[0] = (uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19;
uDest++;
vDest++;
}
}
}
/**
* vertical scale YV12 to RGB
*/
......@@ -1126,13 +1151,13 @@ FUNNYUVCODE
}
// *** bilinear scaling and yuv->rgb conversion of yv12 slices:
// *** bilinear scaling and yuv->rgb or yuv->yuv conversion of yv12 slices:
// *** Note: it's called multiple times while decoding a frame, first time y==0
// *** Designed to upscale, but may work for downscale too.
// s_xinc = (src_width << 16) / dst_width
// s_yinc = (src_height << 16) / dst_height
void SwScale_YV12slice_brg24(unsigned char* srcptr[],int stride[], int y, int h,
unsigned char* dstptr, int dststride, int dstw, int dstbpp,
void SwScale_YV12slice(unsigned char* srcptr[],int stride[], int y, int h,
uint8_t* dstptr[], int dststride, int dstw, int dstbpp,
unsigned int s_xinc,unsigned int s_yinc){
// scaling factors:
......@@ -1172,8 +1197,8 @@ canMMX2BeUsed= (s_xinc <= 0x10000 && (dstw&31)==0 && (srcWidth&15)==0) ? 1 : 0;
if(canMMX2BeUsed) s_xinc+= 20;
else s_xinc = ((srcWidth-2)<<16)/(dstw-2) - 20;
if(fullUVIpol) s_xinc2= s_xinc>>1;
else s_xinc2= s_xinc;
if(fullUVIpol && !dstbpp==12) s_xinc2= s_xinc>>1;
else s_xinc2= s_xinc;
// force calculation of the horizontal interpolation of the first line
if(y==0){
......@@ -1318,10 +1343,14 @@ else s_xinc2= s_xinc;
} // reset counters
while(1){
unsigned char *dest=dstptr+dststride*s_ypos;
unsigned char *dest =dstptr[0]+dststride*s_ypos;
unsigned char *uDest=dstptr[1]+(dststride>>1)*(s_ypos>>1);
unsigned char *vDest=dstptr[2]+(dststride>>1)*(s_ypos>>1);
int y0=(s_srcypos + 0xFFFF)>>16; // first luminance source line number below the dst line
// points to the dst Pixels center in the source (0 is the center of pixel 0,0 in src)
int srcuvpos= s_srcypos + s_yinc/2 - 0x8000;
int srcuvpos= dstbpp==12 ? s_srcypos + s_yinc/2 - 0x8000 :
s_srcypos - 0x8000;
int y1=(srcuvpos + 0x1FFFF)>>17; // first chrominance source line number below the dst line
int yalpha=((s_srcypos-1)&0xFFFF)>>4;
int uvalpha=((srcuvpos-1)&0x1FFFF)>>5;
......@@ -1333,18 +1362,7 @@ else s_xinc2= s_xinc;
if(y0>=y+h) break; // FIXME wrong, skips last lines, but they are dupliactes anyway
// if this is after the last line than use only the last src line
/* if(y0>=y+h)
{
buf1= buf0;
s_last_ypos=y0;
}
if(y1>=(y+h)/2)
{
uvbuf1= uvbuf0;
s_last_y1pos=y1;
}
*/
if((y0&1) && dstbpp==12) uvalpha=-1; // there is no alpha if there is no line
s_ypos++; s_srcypos+=s_yinc;
......@@ -1404,8 +1422,9 @@ else s_xinc2= s_xinc;
s_last_y1pos= MIN(y1, y/2+h/2-1);
}
if(ABS(s_yinc - 0x10000) < 10)
if(dstbpp==12) //YV12
yuv2yuv(buf0, buf1, uvbuf0, uvbuf1, dest, uDest, vDest, dstw, yalpha, uvalpha);
else if(ABS(s_yinc - 0x10000) < 10)
yuv2rgb1(buf0, buf1, uvbuf0, uvbuf1, dest, dstw, yalpha, uvalpha, dstbpp);
else
yuv2rgbX(buf0, buf1, uvbuf0, uvbuf1, dest, dstw, yalpha, uvalpha, dstbpp);
......
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