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Do not convert RGB buffer at once when stride does not fit exact samples.

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When converting RGB format to RGB format with the same bits per sample,
unscaled path performs conversion on the whole buffer at once. For
non-multiple-of-16 BGR24 to RGB24 conversion it means that padding at the
end of line will be converted too. Since it may be of arbitrary length
(e.g. 8 bytes), operating on the whole buffer produces obviously wrong
results.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Kostya Shishkov 2011-07-29 12:55:01 +02:00 committed by Ronald S. Bultje
parent 8a54bfe83f
commit 42ba12888b
1 changed files with 1 additions and 1 deletions
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2
libswscale/swscale_unscaled.c
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@ -382,7 +382,7 @@ static int rgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[],
if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) && !isRGBA32(srcFormat))
dstPtr += ALT32_CORR;
if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)
if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0 && !(srcStride[0] % srcBpp))
conv(srcPtr, dstPtr + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
else {
int i;