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a small step toward 4 plane support 

Originally committed as revision 22411 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Michael Niedermayer 2007-03-02 13:33:18 +00:00
parent 0c84001325
commit dd9bdeb9f3
1 changed files with 6 additions and 6 deletions
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12
libswscale/swscale.c
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@ -2437,20 +2437,20 @@ int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
if (c->sliceDir == 1) {
uint8_t* src2[4]= {src[0], src[1], src[2]};
// slices go from top to bottom
int srcStride2[3]= {srcStride[0], srcStride[1], srcStride[2]};
int dstStride2[3]= {dstStride[0], dstStride[1], dstStride[2]};
int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};
int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};
return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);
} else {
// slices go from bottom to top => we flip the image internally
uint8_t* src2[3]= {src[0] + (srcSliceH-1)*srcStride[0],
uint8_t* src2[4]= {src[0] + (srcSliceH-1)*srcStride[0],
src[1] + ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1],
src[2] + ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2]
};
uint8_t* dst2[3]= {dst[0] + (c->dstH-1)*dstStride[0],
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[3]= {-srcStride[0], -srcStride[1], -srcStride[2]};
int dstStride2[3]= {-dstStride[0], -dstStride[1], -dstStride[2]};
int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};
int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};
return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
}