ffmpeg/FFmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2024-09-20 05:16:38 +00:00
Code Issues Packages Projects Releases Wiki Activity

Let the 4th plane reach the swScale function

Browse Source 
Originally committed as revision 28868 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Cédric Schieli 2009-03-07 09:39:48 +00:00
parent 9621f2f540
commit 6208d67664
1 changed files with 8 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
libswscale/swscale.c
View File

@ -2726,7 +2726,7 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[]){
int i;
uint8_t* src2[4]= {src[0], src[1], src[2]};
uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};
if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
@ -2800,21 +2800,23 @@ int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
// copy strides, so they can safely be modified
if (c->sliceDir == 1) {
// slices go from top to bottom
int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};
int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};
int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};
int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};
return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);
} else {
// slices go from bottom to top => we flip the image internally
uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],
dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],
dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};
int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};
int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};
dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2],
dst[3] + (c->dstH-1)*dstStride[3]};
int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};
int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};
src2[0] += (srcSliceH-1)*srcStride[0];
if (!usePal(c->srcFormat))
src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];
src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];
src2[3] += (srcSliceH-1)*srcStride[3];
return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
}