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43991dbd05
FFmpeg/libavformat/movenc.h
Vignesh Venkatasubramanian 54c488223b avformat/movenc: Add loop parameter to animated AVIF 
The HEIF specification permits specifying the looping behavior of
animated sequences by using the EditList (elst) box. The track
duration will be set to the total duration of all the loops (or
infinite) and the duration of a single loop will be set in the edit
list box.

The default behavior is to loop infinitely.

Compliance verification:
* This was added in libavif recently [1] and the files produced by
  ffmpeg after this change have EditList boxes similar to the ones
  produced by libavif (and avifdec is able to parse the loop count as
  intended).
* ComplianceWarden is ok with the produced files.
* Chrome is able to play back the produced files.

[1] 4d2776a3af

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
2023-01-13 20:03:36 +08:00

289 lines
8.4 KiB
C
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/*
* MOV, 3GP, MP4 muxer
* Copyright (c) 2003 Thomas Raivio
* Copyright (c) 2004 Gildas Bazin <gbazin at videolan dot org>
* Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
*
* 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 AVFORMAT_MOVENC_H
#define AVFORMAT_MOVENC_H
#include "avformat.h"
#include "movenccenc.h"
#include "libavcodec/packet_internal.h"
#define MOV_FRAG_INFO_ALLOC_INCREMENT 64
#define MOV_INDEX_CLUSTER_SIZE 1024
#define MOV_TIMESCALE 1000
#define RTP_MAX_PACKET_SIZE 1450
#define MODE_MP4 0x01
#define MODE_MOV 0x02
#define MODE_3GP 0x04
#define MODE_PSP 0x08 // example working PSP command line:
// ffmpeg -i testinput.avi -f psp -r 14.985 -s 320x240 -b 768 -ar 24000 -ab 32 M4V00001.MP4
#define MODE_3G2 0x10
#define MODE_IPOD 0x20
#define MODE_ISM 0x40
#define MODE_F4V 0x80
#define MODE_AVIF 0x100
typedef struct MOVIentry {
uint64_t pos;
int64_t dts;
int64_t pts;
unsigned int size;
unsigned int samples_in_chunk;
unsigned int chunkNum; ///< Chunk number if the current entry is a chunk start otherwise 0
unsigned int entries;
int cts;
#define MOV_SYNC_SAMPLE 0x0001
#define MOV_PARTIAL_SYNC_SAMPLE 0x0002
#define MOV_DISPOSABLE_SAMPLE 0x0004
uint32_t flags;
AVProducerReferenceTime prft;
} MOVIentry;
typedef struct HintSample {
const uint8_t *data;
int size;
int sample_number;
int offset;
int own_data;
} HintSample;
typedef struct HintSampleQueue {
int size;
int len;
HintSample *samples;
} HintSampleQueue;
typedef struct MOVFragmentInfo {
int64_t offset;
int64_t time;
int64_t duration;
int64_t tfrf_offset;
int size;
} MOVFragmentInfo;
typedef struct MOVTrack {
int mode;
int entry;
unsigned timescale;
uint64_t time;
int64_t track_duration;
int last_sample_is_subtitle_end;
long sample_count;
long sample_size;
long chunkCount;
int has_keyframes;
int has_disposable;
#define MOV_TRACK_CTTS 0x0001
#define MOV_TRACK_STPS 0x0002
#define MOV_TRACK_ENABLED 0x0004
uint32_t flags;
#define MOV_TIMECODE_FLAG_DROPFRAME 0x0001
#define MOV_TIMECODE_FLAG_24HOURSMAX 0x0002
#define MOV_TIMECODE_FLAG_ALLOWNEGATIVE 0x0004
uint32_t timecode_flags;
int language;
int track_id;
int tag; ///< stsd fourcc
AVStream *st;
AVCodecParameters *par;
int mono_as_fc;
int multichannel_as_mono;
int vos_len;
uint8_t *vos_data;
MOVIentry *cluster;
unsigned cluster_capacity;
int audio_vbr;
int height; ///< active picture (w/o VBI) height for D-10/IMX
uint32_t tref_tag;
int tref_id; ///< trackID of the referenced track
int64_t start_dts;
int64_t start_cts;
int64_t end_pts;
int end_reliable;
int64_t dts_shift;
int hint_track; ///< the track that hints this track, -1 if no hint track is set
int src_track; ///< the track that this hint (or tmcd) track describes
AVFormatContext *rtp_ctx; ///< the format context for the hinting rtp muxer
uint32_t prev_rtp_ts;
int64_t cur_rtp_ts_unwrapped;
uint32_t max_packet_size;
int64_t default_duration;
uint32_t default_sample_flags;
uint32_t default_size;
HintSampleQueue sample_queue;
AVPacket *cover_image;
AVIOContext *mdat_buf;
int64_t data_offset;
int frag_discont;
int entries_flushed;
int nb_frag_info;
MOVFragmentInfo *frag_info;
unsigned frag_info_capacity;
struct {
int first_packet_seq;
int first_packet_entry;
int first_packet_seen;
int first_frag_written;
int packet_seq;
int packet_entry;
int slices;
} vc1_info;
void *eac3_priv;
MOVMuxCencContext cenc;
uint32_t palette[AVPALETTE_COUNT];
int pal_done;
int is_unaligned_qt_rgb;
unsigned int squash_fragment_samples_to_one; //< flag to note formats where all samples for a fragment are to be squashed
PacketList squashed_packet_queue;
} MOVTrack;
typedef enum {
MOV_ENC_NONE = 0,
MOV_ENC_CENC_AES_CTR,
} MOVEncryptionScheme;
typedef enum {
MOV_PRFT_NONE = 0,
MOV_PRFT_SRC_WALLCLOCK,
MOV_PRFT_SRC_PTS,
MOV_PRFT_NB
} MOVPrftBox;
typedef struct MOVMuxContext {
const AVClass *av_class;
int mode;
int64_t time;
int nb_streams;
int nb_meta_tmcd; ///< number of new created tmcd track based on metadata (aka not data copy)
int chapter_track; ///< qt chapter track number
int64_t mdat_pos;
uint64_t mdat_size;
MOVTrack *tracks;
int flags;
int rtp_flags;
int iods_skip;
int iods_video_profile;
int iods_audio_profile;
int moov_written;
int fragments;
int max_fragment_duration;
int min_fragment_duration;
int max_fragment_size;
int ism_lookahead;
AVIOContext *mdat_buf;
int first_trun;
int video_track_timescale;
int reserved_moov_size; ///< 0 for disabled, -1 for automatic, size otherwise
int64_t reserved_header_pos;
char *major_brand;
int per_stream_grouping;
AVFormatContext *fc;
AVPacket *pkt;
int use_editlist;
float gamma;
int frag_interleave;
int missing_duration_warned;
char *encryption_scheme_str;
MOVEncryptionScheme encryption_scheme;
uint8_t *encryption_key;
int encryption_key_len;
uint8_t *encryption_kid;
int encryption_kid_len;
int need_rewrite_extradata;
int use_stream_ids_as_track_ids;
int track_ids_ok;
int write_btrt;
int write_tmcd;
MOVPrftBox write_prft;
int empty_hdlr_name;
int movie_timescale;
int64_t avif_extent_pos[2]; // index 0 is YUV and 1 is Alpha.
int avif_extent_length[2]; // index 0 is YUV and 1 is Alpha.
int is_animated_avif;
int avif_loop_count;
} MOVMuxContext;
#define FF_MOV_FLAG_RTP_HINT (1 << 0)
#define FF_MOV_FLAG_FRAGMENT (1 << 1)
#define FF_MOV_FLAG_EMPTY_MOOV (1 << 2)
#define FF_MOV_FLAG_FRAG_KEYFRAME (1 << 3)
#define FF_MOV_FLAG_SEPARATE_MOOF (1 << 4)
#define FF_MOV_FLAG_FRAG_CUSTOM (1 << 5)
#define FF_MOV_FLAG_ISML (1 << 6)
#define FF_MOV_FLAG_FASTSTART (1 << 7)
#define FF_MOV_FLAG_OMIT_TFHD_OFFSET (1 << 8)
#define FF_MOV_FLAG_DISABLE_CHPL (1 << 9)
#define FF_MOV_FLAG_DEFAULT_BASE_MOOF (1 << 10)
#define FF_MOV_FLAG_DASH (1 << 11)
#define FF_MOV_FLAG_FRAG_DISCONT (1 << 12)
#define FF_MOV_FLAG_DELAY_MOOV (1 << 13)
#define FF_MOV_FLAG_GLOBAL_SIDX (1 << 14)
#define FF_MOV_FLAG_WRITE_COLR (1 << 15)
#define FF_MOV_FLAG_WRITE_GAMA (1 << 16)
#define FF_MOV_FLAG_USE_MDTA (1 << 17)
#define FF_MOV_FLAG_SKIP_TRAILER (1 << 18)
#define FF_MOV_FLAG_NEGATIVE_CTS_OFFSETS (1 << 19)
#define FF_MOV_FLAG_FRAG_EVERY_FRAME (1 << 20)
#define FF_MOV_FLAG_SKIP_SIDX (1 << 21)
#define FF_MOV_FLAG_CMAF (1 << 22)
#define FF_MOV_FLAG_PREFER_ICC (1 << 23)
int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt);
int ff_mov_init_hinting(AVFormatContext *s, int index, int src_index);
int ff_mov_add_hinted_packet(AVFormatContext *s, AVPacket *pkt,
int track_index, int sample,
uint8_t *sample_data, int sample_size);
void ff_mov_close_hinting(MOVTrack *track);
#endif /* AVFORMAT_MOVENC_H */
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