ff_vvc_frame_rpl uses the flags to detect whether a frame is in use. Therefore, in the case of a CVSS AU (RASL/GDR with NoOutputBeforeRecoveryFlag) with ph_non_ref_pic_flag = 1, the frame would be freed before it is used. Fix this by always marking the current frame with VVC_FRAME_FLAG_SHORT_REF, as is done by the HEVC decoder.
Additionally, add an assert0 to mitigate the effects of a frame being freed before it is used. Signed-off-by: Frank Plowman <p...@frankplowman.com> --- libavcodec/vvc/refs.c | 2 +- libavcodec/vvc/thread.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/libavcodec/vvc/refs.c b/libavcodec/vvc/refs.c index 8b7ba639a3..26a5b0b34c 100644 --- a/libavcodec/vvc/refs.c +++ b/libavcodec/vvc/refs.c @@ -191,7 +191,7 @@ int ff_vvc_set_new_ref(VVCContext *s, VVCFrameContext *fc, AVFrame **frame) fc->ref = ref; if (s->no_output_before_recovery_flag && (IS_RASL(s) || !GDR_IS_RECOVERED(s))) - ref->flags = 0; + ref->flags = VVC_FRAME_FLAG_SHORT_REF; else if (ph->r->ph_pic_output_flag) ref->flags = VVC_FRAME_FLAG_OUTPUT; diff --git a/libavcodec/vvc/thread.c b/libavcodec/vvc/thread.c index 5b01dd2d20..e87ed5b676 100644 --- a/libavcodec/vvc/thread.c +++ b/libavcodec/vvc/thread.c @@ -801,6 +801,8 @@ int ff_vvc_frame_wait(VVCContext *s, VVCFrameContext *fc) { VVCFrameThread *ft = fc->ft; + av_assert0(fc->ref->progress); + ff_mutex_lock(&ft->lock); while (atomic_load(&ft->nb_scheduled_tasks) || atomic_load(&ft->nb_scheduled_listeners)) -- 2.45.1 _______________________________________________ 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".