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nuv: check per-frame header for validity. 

Since it contains dimensions parsing an invalid one has rather
annoying effects.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Reimar Döffinger 2011-11-05 23:13:07 +01:00 committed by Anton Khirnov
parent 785baa738a
commit f6afacdb3b
1 changed files with 3 additions and 3 deletions
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6
libavcodec/nuv.c
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@ -184,9 +184,9 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
} }
if (c->codec_frameheader) { if (c->codec_frameheader) {
int w, h, q; int w, h, q;
if (buf_size < 12) { if (buf[0] != 'V' || buf_size < 12) {
av_log(avctx, AV_LOG_ERROR, "invalid nuv video frame\n"); av_log(avctx, AV_LOG_ERROR, "invalid nuv video frame (wrong codec_tag?)\n");
return -1; return AVERROR_INVALIDDATA;
} }
w = AV_RL16(&buf[6]); w = AV_RL16(&buf[6]);
h = AV_RL16(&buf[8]); h = AV_RL16(&buf[8]);