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avcodec/mjpegdec: parse avid data from extradata 

Makes no difference for any file tested but is needed
for following bug-fix

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-03-19 17:59:42 +01:00
parent 046a75eea0
commit 493296800c
1 changed files with 7 additions and 0 deletions
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7
libavcodec/mjpegdec.c
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@ -132,6 +132,13 @@ av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx)
s->interlace_polarity = 1; /* bottom field first */
av_log(avctx, AV_LOG_DEBUG, "bottom field first\n");
}
if ( avctx->extradata_size > 8
&& AV_RL32(avctx->extradata) == 0x2C
&& AV_RL32(avctx->extradata+4) == 0x18) {
parse_avid(s, avctx->extradata, avctx->extradata_size);
}
if (avctx->codec->id == AV_CODEC_ID_AMV)
s->flipped = 1;