ffmpeg | branch: master | Nuo Mi <nuomi2...@gmail.com> | Sat Nov 23 17:32:38 2024 +0800| [4de67e874697271e189022b03cd619329d54603c] | committer: Nuo Mi
avcodec/vvcdec: return error if CTU size > 128 The v3 spec reserves CTU size 256. Currently, we use an uint8_t* table to hold cb_width and cb_height. If a CTU size of 256 is not split, cb_width and cb_height will overflow to 0. To avoid switching to uint16_t, rejecting CTU size 256 provides a simple solution. > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4de67e874697271e189022b03cd619329d54603c --- libavcodec/vvc/ps.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libavcodec/vvc/ps.c b/libavcodec/vvc/ps.c index f32f1cc5a1..14cedfd1b3 100644 --- a/libavcodec/vvc/ps.c +++ b/libavcodec/vvc/ps.c @@ -649,6 +649,12 @@ static int decode_ps(VVCParamSets *ps, const CodedBitstreamH266Context *h266, vo if (ret < 0) return ret; + if (rsps->sps_log2_ctu_size_minus5 > 2) { + // CTU > 128 are reserved in vvc spec v3 + av_log(log_ctx, AV_LOG_ERROR, "CTU size > 128. \n"); + return AVERROR_PATCHWELCOME; + } + ret = decode_pps(ps, rpps); if (ret < 0) return ret; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
