Re: [FFmpeg-devel] [PATCH 1/2] lavc/cbs_h265: Add sps_multilayer_extension support
On Tue, Nov 28, 2023 at 1:59 AM Mark Thompson wrote: > > On 17/11/2023 13:03, Jun Zhao wrote: > > Add sps_multilayer_extensio support. > > > > Signed-off-by: Jun Zhao > > --- > > libavcodec/cbs_h265.h | 3 +++ > > libavcodec/cbs_h265_syntax_template.c | 12 +++- > > 2 files changed, 14 insertions(+), 1 deletion(-) > > > > diff --git a/libavcodec/cbs_h265.h b/libavcodec/cbs_h265.h > > index 1b1195f198..15951269fd 100644 > > --- a/libavcodec/cbs_h265.h > > +++ b/libavcodec/cbs_h265.h > > @@ -330,6 +330,9 @@ typedef struct H265RawSPS { > > uint8_t persistent_rice_adaptation_enabled_flag; > > uint8_t cabac_bypass_alignment_enabled_flag; > > > > +// Multilayer extension. > > +uint8_t inter_view_mv_vert_constraint_flag; > > + > > // Screen content coding extension. > > uint8_t sps_curr_pic_ref_enabled_flag; > > uint8_t palette_mode_enabled_flag; > > diff --git a/libavcodec/cbs_h265_syntax_template.c > > b/libavcodec/cbs_h265_syntax_template.c > > index 2d4b954718..1e3bc1acd8 100644 > > --- a/libavcodec/cbs_h265_syntax_template.c > > +++ b/libavcodec/cbs_h265_syntax_template.c > > @@ -717,6 +717,16 @@ static int > > FUNC(sps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw, > > return 0; > > } > > > > +static int FUNC(sps_multilayer_extension)(CodedBitstreamContext *ctx, > > RWContext *rw, > > + H265RawSPS *current) > > +{ > > +int err; > > + > > +flag(inter_view_mv_vert_constraint_flag); > > + > > +return 0; > > +} > > + > > static int FUNC(sps_scc_extension)(CodedBitstreamContext *ctx, RWContext > > *rw, > > H265RawSPS *current) > > { > > @@ -952,7 +962,7 @@ static int FUNC(sps)(CodedBitstreamContext *ctx, > > RWContext *rw, > > if (current->sps_range_extension_flag) > > CHECK(FUNC(sps_range_extension)(ctx, rw, current)); > > if (current->sps_multilayer_extension_flag) > > -return AVERROR_PATCHWELCOME; > > +CHECK(FUNC(sps_multilayer_extension)(ctx, rw, current)); > > if (current->sps_3d_extension_flag) > > return AVERROR_PATCHWELCOME; > > if (current->sps_scc_extension_flag) > > This doesn't seem like it it sufficient - when in multilayer the SPS format > isn't the same (§F.7.3.2.2.1). > > Alternatively: maybe this works for the first layer (haven't verified this > but seems plausible), and therefore to work there only it would be sufficient > to check if MultiLayerExtSpsFlag is true in an SPS and stop if it is? > Actually, this case is from MV-HEVC, and I didn't find any other real examples like the Spec above > (A sample suitable for using with fate would help.) > Will add a new MV-HEVC fate test case > Thanks, > > - Mark ___ 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".
Re: [FFmpeg-devel] [PATCH 1/2] lavc/cbs_h265: Add sps_multilayer_extension support
On 17/11/2023 13:03, Jun Zhao wrote: Add sps_multilayer_extensio support. Signed-off-by: Jun Zhao --- libavcodec/cbs_h265.h | 3 +++ libavcodec/cbs_h265_syntax_template.c | 12 +++- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/libavcodec/cbs_h265.h b/libavcodec/cbs_h265.h index 1b1195f198..15951269fd 100644 --- a/libavcodec/cbs_h265.h +++ b/libavcodec/cbs_h265.h @@ -330,6 +330,9 @@ typedef struct H265RawSPS { uint8_t persistent_rice_adaptation_enabled_flag; uint8_t cabac_bypass_alignment_enabled_flag; +// Multilayer extension. +uint8_t inter_view_mv_vert_constraint_flag; + // Screen content coding extension. uint8_t sps_curr_pic_ref_enabled_flag; uint8_t palette_mode_enabled_flag; diff --git a/libavcodec/cbs_h265_syntax_template.c b/libavcodec/cbs_h265_syntax_template.c index 2d4b954718..1e3bc1acd8 100644 --- a/libavcodec/cbs_h265_syntax_template.c +++ b/libavcodec/cbs_h265_syntax_template.c @@ -717,6 +717,16 @@ static int FUNC(sps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw, return 0; } +static int FUNC(sps_multilayer_extension)(CodedBitstreamContext *ctx, RWContext *rw, + H265RawSPS *current) +{ +int err; + +flag(inter_view_mv_vert_constraint_flag); + +return 0; +} + static int FUNC(sps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw, H265RawSPS *current) { @@ -952,7 +962,7 @@ static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw, if (current->sps_range_extension_flag) CHECK(FUNC(sps_range_extension)(ctx, rw, current)); if (current->sps_multilayer_extension_flag) -return AVERROR_PATCHWELCOME; +CHECK(FUNC(sps_multilayer_extension)(ctx, rw, current)); if (current->sps_3d_extension_flag) return AVERROR_PATCHWELCOME; if (current->sps_scc_extension_flag) This doesn't seem like it it sufficient - when in multilayer the SPS format isn't the same (§F.7.3.2.2.1). Alternatively: maybe this works for the first layer (haven't verified this but seems plausible), and therefore to work there only it would be sufficient to check if MultiLayerExtSpsFlag is true in an SPS and stop if it is? (A sample suitable for using with fate would help.) Thanks, - Mark ___ 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".
[FFmpeg-devel] [PATCH 1/2] lavc/cbs_h265: Add sps_multilayer_extension support
Add sps_multilayer_extensio support. Signed-off-by: Jun Zhao --- libavcodec/cbs_h265.h | 3 +++ libavcodec/cbs_h265_syntax_template.c | 12 +++- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/libavcodec/cbs_h265.h b/libavcodec/cbs_h265.h index 1b1195f198..15951269fd 100644 --- a/libavcodec/cbs_h265.h +++ b/libavcodec/cbs_h265.h @@ -330,6 +330,9 @@ typedef struct H265RawSPS { uint8_t persistent_rice_adaptation_enabled_flag; uint8_t cabac_bypass_alignment_enabled_flag; +// Multilayer extension. +uint8_t inter_view_mv_vert_constraint_flag; + // Screen content coding extension. uint8_t sps_curr_pic_ref_enabled_flag; uint8_t palette_mode_enabled_flag; diff --git a/libavcodec/cbs_h265_syntax_template.c b/libavcodec/cbs_h265_syntax_template.c index 2d4b954718..1e3bc1acd8 100644 --- a/libavcodec/cbs_h265_syntax_template.c +++ b/libavcodec/cbs_h265_syntax_template.c @@ -717,6 +717,16 @@ static int FUNC(sps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw, return 0; } +static int FUNC(sps_multilayer_extension)(CodedBitstreamContext *ctx, RWContext *rw, + H265RawSPS *current) +{ +int err; + +flag(inter_view_mv_vert_constraint_flag); + +return 0; +} + static int FUNC(sps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw, H265RawSPS *current) { @@ -952,7 +962,7 @@ static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw, if (current->sps_range_extension_flag) CHECK(FUNC(sps_range_extension)(ctx, rw, current)); if (current->sps_multilayer_extension_flag) -return AVERROR_PATCHWELCOME; +CHECK(FUNC(sps_multilayer_extension)(ctx, rw, current)); if (current->sps_3d_extension_flag) return AVERROR_PATCHWELCOME; if (current->sps_scc_extension_flag) -- 2.25.1 ___ 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".