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indeo2: fail if input buffer too small

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(cherry picked from commit b7ce4f1d1c)

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Alex Converse
2011-09-09 13:26:49 -07:00
committed by Michael Niedermayer
parent 70f01f1262
commit 457f869b73
1 changed files with 7 additions and 1 deletions
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8
libavcodec/indeo2.c
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@@ -153,6 +153,13 @@ static int ir2_decode_frame(AVCodecContext *avctx,
return -1;
}
start = 48; /* hardcoded for now */
if (start >= buf_size) {
av_log(s->avctx, AV_LOG_ERROR, "input buffer size too small (%d)\n", buf_size);
return AVERROR_INVALIDDATA;
}
s->decode_delta = buf[18];
/* decide whether frame uses deltas or not */
@@ -160,7 +167,6 @@ static int ir2_decode_frame(AVCodecContext *avctx,
for (i = 0; i < buf_size; i++)
buf[i] = ff_reverse[buf[i]];
#endif
start = 48; /* hardcoded for now */
init_get_bits(&s->gb, buf + start, (buf_size - start) * 8);