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hevc: Search start code in decode_nal_units().
User may cut off a weird position and send a packet from there. This avoids returning as invalid data immediately.
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@ -2325,14 +2325,15 @@ static int decode_nal_units(HEVCContext *s, const uint8_t *buf, int length)
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goto fail;
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}
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} else {
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if (buf[2] == 0) {
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length--;
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buf++;
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continue;
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}
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if (buf[0] != 0 || buf[1] != 0 || buf[2] != 1) {
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ret = AVERROR_INVALIDDATA;
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goto fail;
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/* search start code */
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while (buf[0] != 0 || buf[1] != 0 || buf[2] != 1) {
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++buf;
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--length;
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if (length < 4) {
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av_log(s->avctx, AV_LOG_ERROR, "No start code is found.\n");
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ret = AVERROR_INVALIDDATA;
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goto fail;
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}
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}
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buf += 3;
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