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indeo2: fail if input buffer too small

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This commit is contained in:
Alex Converse 2011-09-09 13:26:49 -07:00
parent 68ca330cbd
commit b7ce4f1d1c
1 changed files with 7 additions and 1 deletions
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8
libavcodec/indeo2.c
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@ -156,6 +156,13 @@ static int ir2_decode_frame(AVCodecContext *avctx,
return -1; 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]; s->decode_delta = buf[18];
/* decide whether frame uses deltas or not */ /* decide whether frame uses deltas or not */
@ -163,7 +170,6 @@ static int ir2_decode_frame(AVCodecContext *avctx,
for (i = 0; i < buf_size; i++) for (i = 0; i < buf_size; i++)
buf[i] = av_reverse[buf[i]]; buf[i] = av_reverse[buf[i]];
#endif #endif
start = 48; /* hardcoded for now */
init_get_bits(&s->gb, buf + start, (buf_size - start) * 8); init_get_bits(&s->gb, buf + start, (buf_size - start) * 8);