Also adds an error message.
---
libavcodec/rv34.c | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/libavcodec/rv34.c b/libavcodec/rv34.c
index bf5604f..bffe96a 100644
--- a/libavcodec/rv34.c
+++ b/libavcodec/rv34.c
@@ -1675,15 +1675,19 @@ int ff_rv34_decode_frame(AVCodecContext *avctx,
if(get_slice_offset(avctx, slices_hdr, 0) < 0 ||
get_slice_offset(avctx, slices_hdr, 0) > buf_size){
av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
init_get_bits(&s->gb, buf+get_slice_offset(avctx, slices_hdr, 0),
(buf_size-get_slice_offset(avctx, slices_hdr, 0))*8);
if(r->parse_slice_header(r, &r->s.gb, &si) < 0 || si.start){
av_log(avctx, AV_LOG_ERROR, "First slice header is incorrect\n");
- return -1;
+ return AVERROR_INVALIDDATA;
+ }
+ if ((!s->last_picture_ptr || !s->last_picture_ptr->f.data[0]) &&
+ si.type == AV_PICTURE_TYPE_B) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid decoder state: B-frame without "
+ "reference data.\n");
+ return AVERROR_INVALIDDATA;
}
- if ((!s->last_picture_ptr || !s->last_picture_ptr->f.data[0]) && si.type
== AV_PICTURE_TYPE_B)
- return -1;
if( (avctx->skip_frame >= AVDISCARD_NONREF && si.type==AV_PICTURE_TYPE_B)
|| (avctx->skip_frame >= AVDISCARD_NONKEY && si.type!=AV_PICTURE_TYPE_I)
|| avctx->skip_frame >= AVDISCARD_ALL)
--
1.7.8.4
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