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smvjpegdec: No frame at all is an error

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This fixes a infinite loop

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-06-08 20:00:16 +02:00
parent b94f045b18
commit 9e9ec5ad2a
1 changed files with 2 additions and 0 deletions
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2
libavcodec/smvjpegdec.c
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@ -137,6 +137,8 @@ static int smvjpeg_decode_frame(AVCodecContext *avctx, void *data, int *data_siz
/* Are we at the start of a block? */
if (!cur_frame)
ret = avcodec_decode_video2(s->avctx, mjpeg_data, &s->mjpeg_data_size, avpkt);
else if (!s->mjpeg_data_size)
return AVERROR(EINVAL);
desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
if (desc && mjpeg_data->height % (s->frames_per_jpeg << desc->log2_chroma_h)) {