From: Paul B Mahol <one...@gmail.com>
Signed-off-by: Paul B Mahol <one...@gmail.com>
---
libavcodec/zerocodec.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavcodec/zerocodec.c b/libavcodec/zerocodec.c
index 6c57e05..7a0ba34 100644
--- a/libavcodec/zerocodec.c
+++ b/libavcodec/zerocodec.c
@@ -65,6 +65,10 @@ static int zerocodec_decode_frame(AVCodecContext *avctx,
void *data,
pic->key_frame = 1;
pic->pict_type = AV_PICTURE_TYPE_I;
} else {
+ if (!prev) {
+ av_log(avctx, AV_LOG_ERROR, "No previous frame!\n");
+ return AVERROR_INVALIDDATA;
+ }
pic->key_frame = 0;
pic->pict_type = AV_PICTURE_TYPE_P;
}
--
1.7.10
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