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ffmpeg.wasm-core
Commit 61a3f379 authored by Michael Niedermayer's avatar Michael Niedermayer
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Merge gray->gray converters into planarCopy(), this should also make planarCopy() 

useable for other 16bit formats once we support them.

Originally committed as revision 29216 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
parent 714f32bf
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Showing with 37 additions and 90 deletions
libswscale/swscale.c
View file @ 61a3f379
......@@ -2126,27 +2126,55 @@ static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSli
static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[])
{
int plane;
int plane, i, j;
for (plane=0; plane<4; plane++)
{
int length= (plane==0 || plane==3) ? c->srcW : -((-c->srcW )>>c->chrDstHSubSample);
int y= (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
uint8_t *srcPtr= src[plane];
uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
if (!dst[plane]) continue;
// ignore palette for GRAY8
if (plane == 1 && !dst[2]) continue;
if (!src[plane] || (plane == 1 && !src[2]))
if (!src[plane] || (plane == 1 && !src[2])){
if(is16BPS(c->dstFormat))
length*=2;
fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);
else
}else
{
if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)
if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)){
if (!isBE(c->srcFormat)) srcPtr++;
for (i=0; i<height; i++){
for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
srcPtr+= srcStride[plane];
dstPtr+= dstStride[plane];
}
}else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)){
for (i=0; i<height; i++){
for (j=0; j<length; j++){
dstPtr[ j<<1 ] = srcPtr[j];
dstPtr[(j<<1)+1] = srcPtr[j];
}
srcPtr+= srcStride[plane];
dstPtr+= dstStride[plane];
}
}else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)
&& isBE(c->srcFormat) != isBE(c->dstFormat)){
for (i=0; i<height; i++){
for (j=0; j<length; j++)
((uint16_t*)dstPtr)[j] = bswap_16(((uint16_t*)srcPtr)[j]);
srcPtr+= srcStride[plane];
dstPtr+= dstStride[plane];
}
} else if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)
memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
else
{
int i;
uint8_t *srcPtr= src[plane];
uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
length*=2;
for (i=0; i<height; i++)
{
memcpy(dstPtr, srcPtr, length);
......@@ -2159,73 +2187,6 @@ static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSli
return srcSliceH;
}
static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[]){
int length= c->srcW;
int y= srcSliceY;
int height= srcSliceH;
int i, j;
uint8_t *srcPtr= src[0];
uint8_t *dstPtr= dst[0] + dstStride[0]*y;
if (!isGray(c->dstFormat)){
int height= -((-srcSliceH)>>c->chrDstVSubSample);
memset(dst[1], 128, dstStride[1]*height);
memset(dst[2], 128, dstStride[2]*height);
}
if (!isBE(c->srcFormat)) srcPtr++;
for (i=0; i<height; i++)
{
for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
srcPtr+= srcStride[0];
dstPtr+= dstStride[0];
}
if (dst[3])
fillPlane(dst[3], dstStride[3], length, height, y, 255);
return srcSliceH;
}
static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[]){
int length= c->srcW;
int y= srcSliceY;
int height= srcSliceH;
int i, j;
uint8_t *srcPtr= src[0];
uint8_t *dstPtr= dst[0] + dstStride[0]*y;
for (i=0; i<height; i++)
{
for (j=0; j<length; j++)
{
dstPtr[j<<1] = srcPtr[j];
dstPtr[(j<<1)+1] = srcPtr[j];
}
srcPtr+= srcStride[0];
dstPtr+= dstStride[0];
}
return srcSliceH;
}
static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[]){
int length= c->srcW;
int y= srcSliceY;
int height= srcSliceH;
int i, j;
uint16_t *srcPtr= (uint16_t*)src[0];
uint16_t *dstPtr= (uint16_t*)(dst[0] + dstStride[0]*y/2);
for (i=0; i<height; i++)
{
for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);
srcPtr+= srcStride[0]/2;
dstPtr+= dstStride[0]/2;
}
return srcSliceH;
}
static void getSubSampleFactors(int *h, int *v, int format){
switch(format){
......@@ -2612,28 +2573,14 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
|| (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)
|| (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)
|| (isPlanarYUV(srcFormat) && isGray(dstFormat))
|| (isPlanarYUV(dstFormat) && isGray(srcFormat)))
|| (isPlanarYUV(dstFormat) && isGray(srcFormat))
|| (isGray(dstFormat) && isGray(srcFormat)))
{
if (isPacked(c->srcFormat))
c->swScale= packedCopy;
else /* Planar YUV or gray */
c->swScale= planarCopy;
}
/* gray16{le,be} conversions */
if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))
{
c->swScale= gray16togray;
}
if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))
{
c->swScale= graytogray16;
}
if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))
{
c->swScale= gray16swap;
}
#if ARCH_BFIN
if (flags & SWS_CPU_CAPS_BFIN)
ff_bfin_get_unscaled_swscale (c);
......
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