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avcodec/pngdec: handle 4 more bytes with SIMD for RGB64 in paeth prediction

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-12-07 12:36:10 +01:00
parent ed9be7dd47
commit 82a60de3b7
1 changed files with 2 additions and 1 deletions
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libavcodec/pngdec.c
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@ -272,7 +272,8 @@ static void png_filter_row(PNGDSPContext *dsp, uint8_t *dst, int filter_type,
if (bpp > 2 && size > 4) { if (bpp > 2 && size > 4) {
/* would write off the end of the array if we let it process /* would write off the end of the array if we let it process
* the last pixel with bpp=3 */ * the last pixel with bpp=3 */
int w = bpp == 4 ? size : size - 3; int w = (bpp & 3) ? size - 3 : size;
if (w > i) { if (w > i) {
dsp->add_paeth_prediction(dst + i, src + i, last + i, size - i, bpp); dsp->add_paeth_prediction(dst + i, src + i, last + i, size - i, bpp);
i = w; i = w;