On Wed, 2022-09-21 at 17:41 +0800, Wenbin Chen wrote: > cbs_av1_write_obu() check pbc size after parsing obu frame, and return > AVERROR(ENOSPC) if pbc is small. pbc will be reallocated and this obu > frame will be parsed again, but this may cause error because > CodedBitstreamAV1Context has already been updated, for example > ref_order_hint is updated and will not match the same obu frame. Now size > check is added before parsing obu frame to avoid this error. > > Signed-off-by: Wenbin Chen <wenbin.c...@intel.com> > --- > libavcodec/cbs_av1.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/libavcodec/cbs_av1.c b/libavcodec/cbs_av1.c > index 154d9156cf..9c51a8c7c8 100644 > --- a/libavcodec/cbs_av1.c > +++ b/libavcodec/cbs_av1.c > @@ -1075,6 +1075,9 @@ static int cbs_av1_write_obu(CodedBitstreamContext *ctx, > put_bits32(pbc, 0); > } > > + if (8 * (unit->data_size + obu->obu_size) > put_bits_left(pbc)) > + return AVERROR(ENOSPC); > + > td = NULL; > start_pos = put_bits_count(pbc); >
According to the comment in https://patchwork.ffmpeg.org/project/ffmpeg/patch/20220329082921.756174-1-wenbin.c...@intel.com/ , the error might still occur. I sent out https://ffmpeg.org/pipermail/ffmpeg-devel/2022-September/302127.html to restore CodedBitstreamAV1Context before returning AVERROR(ENOSPC). Could you have a look ? Thanks Haihao _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
