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try to avoid returning odd slices.

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@30847 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
michael 2010-03-05 21:39:27 +00:00
parent 7852aff0c4
commit 75f3bd09ea
1 changed files with 4 additions and 1 deletions
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5
libswscale/swscale_template.c
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@ -2651,8 +2651,10 @@ static int RENAME(swScale)(SwsContext *c, const uint8_t* src[], int srcStride[],
unsigned char *aDest=(CONFIG_SWSCALE_ALPHA && alpPixBuf) ? dst[3]+dstStride[3]*dstY : NULL;
const int firstLumSrcY= vLumFilterPos[dstY]; //First line needed as input
const int firstLumSrcY2= vLumFilterPos[FFMIN(dstY | ((1<<c->chrDstVSubSample) - 1), dstH-1)];
const int firstChrSrcY= vChrFilterPos[chrDstY]; //First line needed as input
int lastLumSrcY= firstLumSrcY + vLumFilterSize -1; // Last line needed as input
int lastLumSrcY2=firstLumSrcY2+ vLumFilterSize -1; // Last line needed as input
int lastChrSrcY= firstChrSrcY + vChrFilterSize -1; // Last line needed as input
int enough_lines;
@ -2669,7 +2671,8 @@ static int RENAME(swScale)(SwsContext *c, const uint8_t* src[], int srcStride[],
firstChrSrcY, lastChrSrcY, lastInChrBuf);
// Do we have enough lines in this slice to output the dstY line
enough_lines = lastLumSrcY < srcSliceY + srcSliceH && lastChrSrcY < -((-srcSliceY - srcSliceH)>>c->chrSrcVSubSample);
enough_lines = lastLumSrcY2 < srcSliceY + srcSliceH && lastChrSrcY < -((-srcSliceY - srcSliceH)>>c->chrSrcVSubSample);
if (!enough_lines) {
lastLumSrcY = srcSliceY + srcSliceH - 1;
lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1;