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yuv4mpeg: Correctly round chroma up for odd luma sizes

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Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Ronald S. Bultje 2013-06-24 19:13:58 -04:00 committed by Martin Storsjö
parent d35b6cd377
commit 6c86a63bad
1 changed files with 3 additions and 2 deletions
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libavformat/yuv4mpeg.c
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@ -132,8 +132,9 @@ static int yuv4_write_packet(AVFormatContext *s, AVPacket *pkt)
// Adjust for smaller Cb and Cr planes // Adjust for smaller Cb and Cr planes
av_pix_fmt_get_chroma_sub_sample(st->codec->pix_fmt, &h_chroma_shift, av_pix_fmt_get_chroma_sub_sample(st->codec->pix_fmt, &h_chroma_shift,
&v_chroma_shift); &v_chroma_shift);
width >>= h_chroma_shift; // Shift right, rounding up
height >>= v_chroma_shift; width = -(-width >> h_chroma_shift);
height = -(-height >> v_chroma_shift);
ptr1 = picture->data[1]; ptr1 = picture->data[1];
ptr2 = picture->data[2]; ptr2 = picture->data[2];