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avcodec/jpeg2000dec: make SOC finding code more robust

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Fixes file from Ticket860

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-07-23 04:12:04 +02:00
parent cb026ac303
commit 4ced30908f
1 changed files with 3 additions and 0 deletions
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3
libavcodec/jpeg2000dec.c
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@ -1615,6 +1615,9 @@ static int jpeg2000_decode_frame(AVCodecContext *avctx, void *data,
bytestream2_seek(&s->g, 0, SEEK_SET);
}
while (bytestream2_get_bytes_left(&s->g) >= 3 && bytestream2_peek_be16(&s->g) != JPEG2000_SOC)
bytestream2_skip(&s->g, 1);
if (bytestream2_get_be16u(&s->g) != JPEG2000_SOC) {
av_log(avctx, AV_LOG_ERROR, "SOC marker not present\n");
ret = AVERROR_INVALIDDATA;