From: Nuo Mi <nuomi2021@gmail.com>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH v3 01/14] vvcdec: add vvc decoder stub
Date: Sun, 15 Oct 2023 18:22:11 +0800
Message-ID: <CAFXK13cN7QWKYH7ys+fVTz6Rb-UWScXEEyM2-oDZ-H3X4HCDyQ@mail.gmail.com> (raw)
In-Reply-To: <AS8P250MB074416217ECC78D13A0D2E328FD0A@AS8P250MB0744.EURP250.PROD.OUTLOOK.COM>
On Sun, Oct 15, 2023 at 5:35 PM Andreas Rheinhardt <
andreas.rheinhardt@outlook.com> wrote:
> Nuo Mi:
> > ---
> > configure | 1 +
> > libavcodec/Makefile | 1 +
> > libavcodec/allcodecs.c | 1 +
> > libavcodec/vvc/Makefile | 4 +
> > libavcodec/vvc/vvcdec.c | 84 +++++++++++
> > libavcodec/vvc/vvcdec.h | 307 ++++++++++++++++++++++++++++++++++++++++
> > 6 files changed, 398 insertions(+)
> > create mode 100644 libavcodec/vvc/Makefile
> > create mode 100644 libavcodec/vvc/vvcdec.c
> > create mode 100644 libavcodec/vvc/vvcdec.h
> >
> > diff --git a/configure b/configure
> > index 8a1902810a..442c439c3e 100755
> > --- a/configure
> > +++ b/configure
> > @@ -3025,6 +3025,7 @@ vp6f_decoder_select="vp6_decoder"
> > vp7_decoder_select="h264pred videodsp vp8dsp"
> > vp8_decoder_select="h264pred videodsp vp8dsp"
> > vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
> > +vvc_decoder_select="cabac golomb videodsp"
> > wcmv_decoder_select="inflate_wrapper"
> > webp_decoder_select="vp8_decoder exif"
> > wmalossless_decoder_select="llauddsp"
> > diff --git a/libavcodec/Makefile b/libavcodec/Makefile
> > index 08fd151619..fb2738d8eb 100644
> > --- a/libavcodec/Makefile
> > +++ b/libavcodec/Makefile
> > @@ -62,6 +62,7 @@ OBJS = ac3_parser.o
> \
> > xiph.o
> \
> >
> > # subsystems
> > +include $(SRC_PATH)/libavcodec/vvc/Makefile
>
> I don't see why vvc should have a subfolder of its own.
>
This is a suggestion from JB.
There are 1700+ files in libavcodec, Even
https://github.com/FFmpeg/FFmpeg/tree/master/libavcodec can't not list them
all.
> > OBJS-$(CONFIG_AANDCTTABLES) += aandcttab.o
> > OBJS-$(CONFIG_AC3DSP) += ac3dsp.o ac3.o ac3tab.o
> > OBJS-$(CONFIG_ADTS_HEADER) += adts_header.o
> mpeg4audio_sample_rates.o
> > diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
> > index 6e95ca5636..c16d80cb85 100644
> > --- a/libavcodec/allcodecs.c
> > +++ b/libavcodec/allcodecs.c
> > @@ -388,6 +388,7 @@ extern const FFCodec ff_vp9_rkmpp_decoder;
> > extern const FFCodec ff_vp9_v4l2m2m_decoder;
> > extern const FFCodec ff_vqa_decoder;
> > extern const FFCodec ff_vqc_decoder;
> > +extern const FFCodec ff_vvc_decoder;
> > extern const FFCodec ff_wbmp_decoder;
> > extern const FFCodec ff_wbmp_encoder;
> > extern const FFCodec ff_webp_decoder;
> > diff --git a/libavcodec/vvc/Makefile b/libavcodec/vvc/Makefile
> > new file mode 100644
> > index 0000000000..bd14dbc1df
> > --- /dev/null
> > +++ b/libavcodec/vvc/Makefile
> > @@ -0,0 +1,4 @@
> > +clean::
> > + $(RM) $(CLEANSUFFIXES:%=libavcodec/vvc/%)
> > +
> > +OBJS-$(CONFIG_VVC_DECODER) += vvc/vvcdec.o \
> > diff --git a/libavcodec/vvc/vvcdec.c b/libavcodec/vvc/vvcdec.c
> > new file mode 100644
> > index 0000000000..8d027af0b9
> > --- /dev/null
> > +++ b/libavcodec/vvc/vvcdec.c
> > @@ -0,0 +1,84 @@
> > +/*
> > + * VVC video decoder
> > + *
> > + * Copyright (C) 2021 Nuo Mi
> > + * Copyright (C) 2022 Xu Mu
> > + *
> > + * This file is part of FFmpeg.
> > + *
> > + * FFmpeg is free software; you can redistribute it and/or
> > + * modify it under the terms of the GNU Lesser General Public
> > + * License as published by the Free Software Foundation; either
> > + * version 2.1 of the License, or (at your option) any later version.
> > + *
> > + * FFmpeg is distributed in the hope that it will be useful,
> > + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> > + * Lesser General Public License for more details.
> > + *
> > + * You should have received a copy of the GNU Lesser General Public
> > + * License along with FFmpeg; if not, write to the Free Software
> > + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
> 02110-1301 USA
> > + */
> > +#include "config_components.h"
>
> What do you need this for?
>
> > +
> > +#include "libavcodec/codec_internal.h"
> > +#include "libavcodec/decode.h"
> > +#include "libavcodec/golomb.h"
> > +#include "libavcodec/profiles.h"
> > +#include "libavcodec/vvc.h"
> > +
> > +#include "libavutil/cpu.h"
>
> Why would you ever need cpu.h in the decoder?
> Even if a later patch needs it, it should be added in the later patch.
>
> > +
> > +#include "vvcdec.h"
> > +
> > +static int vvc_decode_frame(AVCodecContext *avctx, AVFrame *output,
> > + int *got_output, AVPacket *avpkt)
> > +{
> > + return avpkt->size;
> > +}
> > +
> > +static void vvc_decode_flush(AVCodecContext *avctx)
> > +{
> > +}
> > +
> > +static av_cold int vvc_decode_free(AVCodecContext *avctx)
> > +{
> > + return 0;
> > +}
> > +
> > +static av_cold int vvc_decode_init(AVCodecContext *avctx)
> > +{
> > + return 0;
> > +}
> > +
> > +#define OFFSET(x) offsetof(VVCContext, x)
> > +#define PAR (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
> > +
> > +static const AVOption options[] = {
> > + { NULL },
> > +};
> > +
> > +static const AVClass vvc_decoder_class = {
> > + .class_name = "vvc decoder",
> > + .item_name = av_default_item_name,
> > + .option = options,
> > + .version = LIBAVUTIL_VERSION_INT,
> > +};
>
> This seems to be based upon H.264, but the H.264 decoder has options,
> whereas this decoder doesn't, so this AVClass and the options are
> unnecessary.
>
> > +
> > +const FFCodec ff_vvc_decoder = {
> > + .p.name = "vvc",
> > + .p.long_name = NULL_IF_CONFIG_SMALL("VVC (Versatile
> Video Coding)"),
> > + .p.type = AVMEDIA_TYPE_VIDEO,
> > + .p.id = AV_CODEC_ID_VVC,
> > + .priv_data_size = sizeof(VVCContext),
> > + .p.priv_class = &vvc_decoder_class,
> > + .init = vvc_decode_init,
> > + .close = vvc_decode_free,
> > + FF_CODEC_DECODE_CB(vvc_decode_frame),
> > + .flush = vvc_decode_flush,
> > + .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
> AV_CODEC_CAP_OTHER_THREADS,
> > + .caps_internal = FF_CODEC_CAP_EXPORTS_CROPPING |
> FF_CODEC_CAP_INIT_CLEANUP |
> > + FF_CODEC_CAP_AUTO_THREADS,
> > + .p.profiles = NULL_IF_CONFIG_SMALL(ff_vvc_profiles),
> > +};
> > diff --git a/libavcodec/vvc/vvcdec.h b/libavcodec/vvc/vvcdec.h
> > new file mode 100644
> > index 0000000000..698ab89b9d
> > --- /dev/null
> > +++ b/libavcodec/vvc/vvcdec.h
> > @@ -0,0 +1,307 @@
> > +/*
> > + * VVC video decoder
> > + *
> > + * Copyright (C) 2021 Nuo Mi
> > + * Copyright (C) 2022 Xu Mu
> > + *
> > + * This file is part of FFmpeg.
> > + *
> > + * FFmpeg is free software; you can redistribute it and/or
> > + * modify it under the terms of the GNU Lesser General Public
> > + * License as published by the Free Software Foundation; either
> > + * version 2.1 of the License, or (at your option) any later version.
> > + *
> > + * FFmpeg is distributed in the hope that it will be useful,
> > + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> > + * Lesser General Public License for more details.
> > + *
> > + * You should have received a copy of the GNU Lesser General Public
> > + * License along with FFmpeg; if not, write to the Free Software
> > + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
> 02110-1301 USA
> > + */
> > +
> > +#ifndef AVCODEC_VVCDEC_H
> > +#define AVCODEC_VVCDEC_H
> > +
> > +#include "libavcodec/cbs.h"
> > +#include "libavcodec/cbs_h266.h"
> > +#include "libavcodec/h2645_parse.h"
> > +#include "libavcodec/threadframe.h"
> > +#include "libavcodec/videodsp.h"
> > +#include "libavcodec/vvc.h"
> > +#include "libavutil/executor.h"
> > +
> > +#define LUMA 0
> > +#define CHROMA 1
> > +#define CB 1
> > +#define CR 2
> > +#define JCBCR 3
> > +
> > +#define MAX_CTU_SIZE 128
> > +
> > +#define MAX_CU_SIZE MAX_CTU_SIZE
> > +#define MIN_CU_SIZE 4
> > +#define MIN_CU_LOG2 2
> > +#define MAX_CU_DEPTH 7
> > +
> > +#define MIN_PU_SIZE 4
> > +#define MIN_PU_LOG2 2
> > +
> > +#define MAX_TB_SIZE 64
> > +#define MIN_TU_LOG2 2 ///<
> MinTbLog2SizeY
> > +#define MIN_TU_SIZE 4
> > +#define MAX_TUS_IN_CU 64
> > +
> > +#define MAX_PARTS_IN_CTU ((MAX_CTU_SIZE >> MIN_CU_LOG2) *
> (MAX_CTU_SIZE >> MIN_CU_LOG2))
> > +
> > +#define MAX_CONTROL_POINTS 3
> > +
> > +#define MRG_MAX_NUM_CANDS 6
> > +#define MAX_NUM_HMVP_CANDS 5
> > +
> > +#define L0 0
> > +#define L1 1
> > +
> > +#define CHROMA_EXTRA_BEFORE 1
> > +#define CHROMA_EXTRA_AFTER 2
> > +#define CHROMA_EXTRA 3
> > +#define LUMA_EXTRA_BEFORE 3
> > +#define LUMA_EXTRA_AFTER 4
> > +#define LUMA_EXTRA 7
> > +#define BILINEAR_EXTRA_BEFORE 0
> > +#define BILINEAR_EXTRA_AFTER 1
> > +#define BILINEAR_EXTRA 1
> > +
> > +#define MAX_QP 63
> > +#define DEFAULT_INTRA_TC_OFFSET 2
> > +
> > +#define SAO_PADDING_SIZE 1
> > +
> > +#define ALF_PADDING_SIZE 8
> > +#define ALF_BLOCK_SIZE 4
> > +
> > +#define ALF_BORDER_LUMA 3
> > +#define ALF_BORDER_CHROMA 2
> > +
> > +#define ALF_VB_POS_ABOVE_LUMA 4
> > +#define ALF_VB_POS_ABOVE_CHROMA 2
> > +
> > +#define ALF_GRADIENT_STEP 2
> > +#define ALF_GRADIENT_BORDER 2
> > +#define ALF_GRADIENT_SIZE ((MAX_CU_SIZE + ALF_GRADIENT_BORDER *
> 2) / ALF_GRADIENT_STEP)
> > +#define ALF_NUM_DIR 4
> > +
> > +#define MAX_PB_SIZE 128
> > +#define EDGE_EMU_BUFFER_STRIDE (MAX_PB_SIZE + 32)
> > +
> > +#define AFFINE_MIN_BLOCK_SIZE 4
> > +#define PROF_BORDER_EXT 1
> > +#define PROF_BLOCK_SIZE (AFFINE_MIN_BLOCK_SIZE +
> PROF_BORDER_EXT * 2)
> > +#define BDOF_BORDER_EXT 1
> > +
> > +#define BDOF_PADDED_SIZE (16 + BDOF_BORDER_EXT * 2)
> > +#define BDOF_BLOCK_SIZE 4
> > +#define BDOF_GRADIENT_SIZE (BDOF_BLOCK_SIZE + BDOF_BORDER_EXT * 2)
> > +
> > +/**
> > + * Value of the luma sample at position (x, y) in the 2D array tab.
> > + */
> > +#define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
> > +#define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
> > +#define CTB(tab, x, y) ((tab)[(y) * fc->ps.pps->ctb_width + (x)])
> > +
> > +typedef struct VVCLocalContext VVCLocalContext;
> > +typedef struct SliceContext SliceContext;
> > +typedef struct VVCFrameContext VVCFrameContext;
> > +typedef struct VVCFrameThread VVCFrameThread;
> > +typedef struct EntryPoint EntryPoint;
> > +typedef struct VVCTask VVCTask;
> > +typedef struct Mv Mv;
> > +typedef struct MvField MvField;
> > +typedef struct DMVRInfo DMVRInfo;
> > +typedef struct CTU CTU;
> > +typedef struct SAOParams SAOParams;
> > +typedef struct ALFParams ALFParams;
> > +
> > +typedef struct RefPicList {
> > + struct VVCFrame *ref[VVC_MAX_REF_ENTRIES];
> > + int list[VVC_MAX_REF_ENTRIES];
> > + int isLongTerm[VVC_MAX_REF_ENTRIES];
> > + int nb_refs;
> > +} RefPicList;
> > +
> > +typedef struct RefPicListTab {
> > + RefPicList refPicList[2];
> > +} RefPicListTab;
> > +
> > +typedef struct VVCFrame {
> > + AVFrame *frame;
> > + ThreadFrame tf;
>
> You are not using the ThreadFrame API at all; you can simply remove this
> by switching to ff_thread_get_buffer() instead of
> ff_thread_get_ext_buffer().
>
> > +
> > + MvField *tab_dmvr_mvf;
> > + RefPicListTab **rpl_tab;
> > +
> > + int ctb_count;
> > +
> > + int poc;
> > +
> > + struct VVCFrame *collocated_ref;
> > +
> > + AVBufferRef *tab_dmvr_mvf_buf;
> > + AVBufferRef *rpl_tab_buf;
> > + AVBufferRef *rpl_buf;
> > + AVBufferRef *progress_buf;
> > +
> > + /**
> > + * A sequence counter, so that old frames are output first
> > + * after a POC reset
> > + */
> > + uint16_t sequence;
> > + /**
> > + * A combination of VVC_FRAME_FLAG_*
> > + */
> > + uint8_t flags;
> > +} VVCFrame;
> > +
> > +struct SliceContext {
> > + int slice_idx;
> > + EntryPoint *eps;
> > + int nb_eps;
> > + RefPicList *rpl;
> > +};
> > +
> > +struct VVCFrameContext {
> > + AVCodecContext *avctx;
>
> Lots of files of the H.264 and HEVC decoder actually don't need
> AVCodecContext as complete type at all, they can work with a forward
> declaration. It is probably the same for this one, so could you use
> struct AVCodecContext* in the header?
>
> > +
> > + // +1 for the current frame
> > + VVCFrame DPB[VVC_MAX_DPB_SIZE + 1];
> > +
> > + AVFrame *frame;
> > + AVFrame *output_frame;
> > +
> > + SliceContext **slices;
> > + int nb_slices;
> > + int nb_slices_allocated;
> > +
> > + VVCFrame *ref;
> > +
> > + VideoDSPContext vdsp;
> > +
> > + VVCFrameThread *frame_thread;
> > +
> > + uint64_t decode_order;
> > +
> > + AVBufferPool *tab_dmvr_mvf_pool;
> > + AVBufferPool *rpl_tab_pool;
> > +
> > + AVBufferPool *cu_pool;
> > + AVBufferPool *tu_pool;
> > +
> > + struct {
> > + int16_t *slice_idx;
> > +
> > + DMVRInfo *dmvr;
> > +
> > + int *cb_pos_x[2]; ///<
> CbPosX[][][]
> > + int *cb_pos_y[2]; ///<
> CbPosY[][][]
> > + uint8_t *cb_width[2]; ///<
> CbWidth[][][]
> > + uint8_t *cb_height[2]; ///<
> CbHeight[][][]
> > + uint8_t *cqt_depth[2]; ///<
> CqtDepth[][][]
> > + int8_t *qp[VVC_MAX_SAMPLE_ARRAYS];
> > +
> > + uint8_t *skip; ///<
> CuSkipFlag[][]
> > + uint8_t *ispmf; ///<
> intra_sub_partitions_mode_flag
> > + uint8_t *msm[2]; ///<
> MttSplitMode[][][] in 32 pixels
> > + uint8_t *imf; ///<
> IntraMipFlag[][]
> > + uint8_t *imtf; ///<
> intra_mip_transposed_flag[][]
> > + uint8_t *imm; ///<
> intra_mip_mode[][]
> > + uint8_t *ipm; ///<
> IntraPredModeY[][]
> > + uint8_t *cpm[2]; ///<
> CuPredMode[][][]
> > + uint8_t *msf; ///<
> MergeSubblockFlag[][]
> > + uint8_t *iaf; ///<
> InterAffineFlag[][]
> > + uint8_t *mmi; ///<
> MotionModelIdc[][]
> > + Mv *cp_mv[2]; ///<
> CpMvLX[][][][MAX_CONTROL_POINTS];
> > + MvField *mvf; ///< MvDmvrL0,
> MvDmvrL1
> > +
> > + uint8_t *tu_coded_flag[VVC_MAX_SAMPLE_ARRAYS]; ///<
> tu_y_coded_flag[][], tu_cb_coded_flag[][], tu_cr_coded_flag[][]
> > + uint8_t *tu_joint_cbcr_residual_flag; ///<
> tu_joint_cbcr_residual_flag[][]
> > + int *tb_pos_x0[2];
> > + int *tb_pos_y0[2];
> > + uint8_t *tb_width[2];
> > + uint8_t *tb_height[2];
> > + uint8_t *pcmf[2];
> > +
> > + uint8_t *horizontal_bs[VVC_MAX_SAMPLE_ARRAYS];
> > + uint8_t *vertical_bs[VVC_MAX_SAMPLE_ARRAYS];
> > + uint8_t *horizontal_p; ///< horizontal
> maxFilterLengthPs for luma
> > + uint8_t *horizontal_q; ///< horizontal
> maxFilterLengthPs for luma
> > + uint8_t *vertical_p; ///< vertical
> maxFilterLengthQs for luma
> > + uint8_t *vertical_q; ///< vertical
> maxFilterLengthQs for luma
> > +
> > + uint8_t *sao_pixel_buffer_h[VVC_MAX_SAMPLE_ARRAYS];
> > + uint8_t *sao_pixel_buffer_v[VVC_MAX_SAMPLE_ARRAYS];
> > + uint8_t *alf_pixel_buffer_h[VVC_MAX_SAMPLE_ARRAYS][2];
> > + uint8_t *alf_pixel_buffer_v[VVC_MAX_SAMPLE_ARRAYS][2];
> > +
> > + int *coeffs;
> > + CTU *ctus;
> > +
> > + //used in arrays_init only
> > + int ctu_count;
> > + int ctu_size;
> > + int pic_size_in_min_cb;
> > + int pic_size_in_min_pu;
> > + int pic_size_in_min_tu;
> > + int ctu_width;
> > + int ctu_height;
> > + int width;
> > + int height;
> > + int chroma_format_idc;
> > + int pixel_shift;
> > + int bs_width;
> > + int bs_height;
> > + } tab;
> > +} ;
> > +
> > +typedef struct VVCContext {
> > + const AVClass *c; // needed by private avoptions
> > + AVCodecContext *avctx;
> > +
> > + CodedBitstreamContext *cbc;
> > + CodedBitstreamFragment current_frame;
> > +
> > + int temporal_id; ///< temporal_id_plus1 - 1
> > + int poc_tid0;
> > +
> > + int eos; ///< current packet contains an EOS/EOB NAL
> > + int last_eos; ///< last packet contains an EOS/EOB NAL
> > +
> > +
> > + enum VVCNALUnitType vcl_unit_type;
> > + int no_output_before_recovery_flag; ///< NoOutputBeforeRecoveryFlag
> > + int gdr_recovery_point_poc; ///< recoveryPointPocVal
> > +
> > + /**
> > + * Sequence counters for decoded and output frames, so that old
> > + * frames are output first after a POC reset
> > + */
> > + uint16_t seq_decode;
> > + uint16_t seq_output;
> > +
> > + int is_nalff; ///< this flag is != 0 if bitstream is
> encapsulated
> > + ///< as a format defined in 14496-15
> > +
> > + int apply_defdispwin;
> > + int nal_length_size; ///< Number of bytes used for nal length
> (1, 2 or 4)
> > +
> > + AVExecutor *executor;
>
> Same as above with AVCodecContext: It seems only vvc_thread.c will ever
> need to have executor.h included, so by using struct AVExecutor you can
> avoid the inclusion.
>
> > +
> > + VVCFrameContext *fcs;
> > + int nb_fcs;
> > +
> > + uint64_t nb_frames; ///< processed frames
> > + int nb_delayed; ///< delayed frames
> > +} VVCContext ;
> > +
> > +#endif /* AVCODEC_VVCDEC_H */
>
Hi Andreas,
Thank you for all the comments, I will check it later.
>
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prev parent reply other threads:[~2023-10-15 10:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-02 16:07 Nuo Mi
2023-10-15 9:36 ` Andreas Rheinhardt
2023-10-15 10:22 ` Nuo Mi [this message]
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Example config snippet for mirrors.
AGPL code for this site: git clone https://public-inbox.org/public-inbox.git