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alacdec: do not be too strict about the extradata size 

Sometimes the extradata has duplicate atoms, but that shouldn't prevent
decoding. Just ensure that it is at least 36 bytes as a sanity check.

CC: libav-stable@libav.org
This commit is contained in:
Justin Ruggles 2012-12-22 01:21:09 -05:00
parent aef5150719
commit 68a04b0cce
1 changed files with 3 additions and 4 deletions
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7
libavcodec/alac.c
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@ -521,10 +521,9 @@ static av_cold int alac_decode_init(AVCodecContext * avctx)
alac->avctx = avctx;
/* initialize from the extradata */
if (alac->avctx->extradata_size != ALAC_EXTRADATA_SIZE) {
av_log(avctx, AV_LOG_ERROR, "alac: expected %d extradata bytes\n",
ALAC_EXTRADATA_SIZE);
return -1;
if (alac->avctx->extradata_size < ALAC_EXTRADATA_SIZE) {
av_log(avctx, AV_LOG_ERROR, "alac: extradata is too small\n");
return AVERROR_INVALIDDATA;
}
if (alac_set_info(alac)) {
av_log(avctx, AV_LOG_ERROR, "alac: set_info failed\n");