Otherwise decoding will crash lateron; e.g. because dct_tokens
is never set or because a VLC that has not been allocated is used.
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com>
---
libavcodec/vp3.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c
index 0cae075452..9aa84e83b7 100644
--- a/libavcodec/vp3.c
+++ b/libavcodec/vp3.c
@@ -2335,9 +2335,13 @@ static av_cold int vp3_decode_init(AVCodecContext *avctx)
if (ret < 0)
return ret;
- if (avctx->codec_tag == MKTAG('V', 'P', '4', '0'))
+ if (avctx->codec_tag == MKTAG('V', 'P', '4', '0')) {
s->version = 3;
- else if (avctx->codec_tag == MKTAG('V', 'P', '3', '0'))
+#if !CONFIG_VP4_DECODER
+ av_log(avctx, AV_LOG_ERROR, "This build does not support decoding
VP4.\n");
+ return AVERROR_DECODER_NOT_FOUND;
+#endif
+ } else if (avctx->codec_tag == MKTAG('V', 'P', '3', '0'))
s->version = 0;
else
s->version = 1;
--
2.27.0
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