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Code Issues Releases Activity

avcodec/mjpegdec: Fix normal jpeg with bits < 8

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Untested due to lack of testcase

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-09-06 00:56:44 +02:00
parent 15071ed4fc
commit 1deeb9437c
1 changed files with 6 additions and 0 deletions
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6
libavcodec/mjpegdec.c
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@ -1121,6 +1121,12 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah,
return AVERROR_INVALIDDATA;
}
s->dsp.idct_put(ptr, linesize[c], s->block);
if (s->bits & 7) {
int block_x, block_y;
for (block_y=0; block_y<8; block_y++)
for (block_x=0; block_x<8; block_x++)
*(ptr + 2*block_x + block_y*linesize[c]) <<= 8 - s->bits;
}
}
} else {
int block_idx = s->block_stride[c] * (v * mb_y + y) +