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avcodec/vvcdec: fix seeking for open GOP 

how to reproduce:
wget https://media.xiph.org/video/derf/y4m/students_cif.y4m
vvencapp --input students_cif.y4m --preset faster --output students.266
MP4Box -add students.266:fps=30000/1001:par=12:11 -new students.mp4
ffplay students.mp4
This commit is contained in:
Nuo Mi 2024-02-03 14:04:02 +08:00
parent f80d91c051
commit 88a040386a
3 changed files with 13 additions and 0 deletions
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6
libavcodec/vvc/vvc_refs.c
View File

@ -80,6 +80,12 @@ void ff_vvc_clear_refs(VVCFrameContext *fc)
VVC_FRAME_FLAG_SHORT_REF | VVC_FRAME_FLAG_LONG_REF);
}
void ff_vvc_flush_dpb(VVCFrameContext *fc)
{
for (int i = 0; i < FF_ARRAY_ELEMS(fc->DPB); i++)
ff_vvc_unref_frame(fc, &fc->DPB[i], ~0);
}
static void free_progress(FFRefStructOpaque unused, void *obj)
{
FrameProgress *p = (FrameProgress *)obj;

1
libavcodec/vvc/vvc_refs.h
View File

@ -33,6 +33,7 @@ int ff_vvc_frame_rpl(VVCContext *s, VVCFrameContext *fc, SliceContext *sc);
int ff_vvc_slice_rpl(VVCContext *s, VVCFrameContext *fc, SliceContext *sc);
void ff_vvc_unref_frame(VVCFrameContext *fc, VVCFrame *frame, int flags);
void ff_vvc_clear_refs(VVCFrameContext *fc);
void ff_vvc_flush_dpb(VVCFrameContext *fc);
typedef enum VVCProgress {
VVC_PROGRESS_MV,

6
libavcodec/vvc/vvcdec.c
View File

@ -922,9 +922,15 @@ static av_cold void vvc_decode_flush(AVCodecContext *avctx)
{
VVCContext *s = avctx->priv_data;
int got_output = 0;
VVCFrameContext *last;
while (s->nb_delayed)
wait_delayed_frame(s, NULL, &got_output);
last = get_frame_context(s, s->fcs, s->nb_frames - 1);
ff_vvc_flush_dpb(last);
s->eos = 1;
}
static av_cold int vvc_decode_free(AVCodecContext *avctx)