FFmpeg coverage

Directory:	../../../ffmpeg/
File:	src/libavformat/isom.h
Date:	2024-04-26 14:42:52

	Exec	Total	Coverage
Lines:	2	2	100.0%
Functions:	1	1	100.0%
Branches:	1	2	50.0%

  
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      /*
    
       * ISO Media common code
    
       * copyright (c) 2001 Fabrice Bellard
    
       * copyright (c) 2002 Francois Revol <revol@free.fr>
    
       * copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
    
       *
    
       * 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_ISOM_H
    
      #define AVFORMAT_ISOM_H
    
      #include <stddef.h>
    
      #include <stdint.h>
    
      #include "libavutil/encryption_info.h"
    
      #include "libavutil/mastering_display_metadata.h"
    
      #include "libavutil/ambient_viewing_environment.h"
    
      #include "libavutil/spherical.h"
    
      #include "libavutil/stereo3d.h"
    
      #include "avio.h"
    
      #include "internal.h"
    
      #include "dv.h"
    
      /* isom.c */
    
      extern const AVCodecTag ff_mp4_obj_type[];
    
      extern const AVCodecTag ff_codec_movvideo_tags[];
    
      extern const AVCodecTag ff_codec_movaudio_tags[];
    
      extern const AVCodecTag ff_codec_movsubtitle_tags[];
    
      extern const AVCodecTag ff_codec_movdata_tags[];
    
      int ff_mov_iso639_to_lang(const char lang[4], int mp4);
    
      int ff_mov_lang_to_iso639(unsigned code, char to[4]);
    
      struct AVAESCTR;
    
      /* the QuickTime file format is quite convoluted...
    
       * it has lots of index tables, each indexing something in another one...
    
       * Here we just use what is needed to read the chunks
    
       */
    
      typedef struct MOVStts {
    
          unsigned int count;
    
          unsigned int duration;
    
      } MOVStts;
    
      typedef struct MOVCtts {
    
          unsigned int count;
    
          int duration;
    
      } MOVCtts;
    
      typedef struct MOVStsc {
    
          int first;
    
          int count;
    
          int id;
    
      } MOVStsc;
    
      typedef struct MOVElst {
    
          int64_t duration;
    
          int64_t time;
    
          float rate;
    
      } MOVElst;
    
      typedef struct MOVDref {
    
          uint32_t type;
    
          char *path;
    
          char *dir;
    
          char volume[28];
    
          char filename[64];
    
          int16_t nlvl_to, nlvl_from;
    
      } MOVDref;
    
      typedef struct MOVAtom {
    
          uint32_t type;
    
          int64_t size; /* total size (excluding the size and type fields) */
    
      } MOVAtom;
    
      struct MOVParseTableEntry;
    
      typedef struct MOVFragment {
    
          int found_tfhd;
    
          unsigned track_id;
    
          uint64_t base_data_offset;
    
          uint64_t moof_offset;
    
          uint64_t implicit_offset;
    
          unsigned stsd_id;
    
          unsigned duration;
    
          unsigned size;
    
          unsigned flags;
    
      } MOVFragment;
    
      typedef struct MOVTrackExt {
    
          unsigned track_id;
    
          unsigned stsd_id;
    
          unsigned duration;
    
          unsigned size;
    
          unsigned flags;
    
      } MOVTrackExt;
    
      typedef struct MOVSbgp {
    
          unsigned int count;
    
          unsigned int index;
    
      } MOVSbgp;
    
      typedef struct MOVEncryptionIndex {
    
          // Individual encrypted samples.  If there are no elements, then the default
    
          // settings will be used.
    
          unsigned int nb_encrypted_samples;
    
          AVEncryptionInfo **encrypted_samples;
    
          uint8_t* auxiliary_info_sizes;
    
          size_t auxiliary_info_sample_count;
    
          uint8_t auxiliary_info_default_size;
    
          uint64_t* auxiliary_offsets;  ///< Absolute seek position
    
          size_t auxiliary_offsets_count;
    
      } MOVEncryptionIndex;
    
      typedef struct MOVFragmentStreamInfo {
    
          int id;
    
          int64_t sidx_pts;
    
          int64_t first_tfra_pts;
    
          int64_t tfdt_dts;
    
          int64_t next_trun_dts;
    
          // Index of the first sample/trun in the fragment.
    
          int index_base;
    
          int index_entry;
    
          MOVEncryptionIndex *encryption_index;
    
          int stsd_id; // current fragment stsd_id
    
      } MOVFragmentStreamInfo;
    
      typedef struct MOVFragmentIndexItem {
    
          int64_t moof_offset;
    
          int headers_read;
    
          int current;
    
          int nb_stream_info;
    
          MOVFragmentStreamInfo * stream_info;
    
      } MOVFragmentIndexItem;
    
      typedef struct MOVFragmentIndex {
    
          int allocated_size;
    
          int complete;
    
          int current;
    
          int nb_items;
    
          MOVFragmentIndexItem * item;
    
      } MOVFragmentIndex;
    
      typedef struct MOVIndexRange {
    
          int64_t start;
    
          int64_t end;
    
      } MOVIndexRange;
    
      typedef struct MOVStreamContext {
    
          AVIOContext *pb;
    
          int refcount;
    
          int pb_is_copied;
    
          int id;               ///< AVStream id
    
          int ffindex;          ///< AVStream index
    
          int next_chunk;
    
          unsigned int chunk_count;
    
          int64_t *chunk_offsets;
    
          unsigned int stts_count;
    
          MOVStts *stts_data;
    
          unsigned int sdtp_count;
    
          uint8_t *sdtp_data;
    
          unsigned int ctts_count;
    
          unsigned int ctts_allocated_size;
    
          MOVCtts *ctts_data;
    
          unsigned int stsc_count;
    
          MOVStsc *stsc_data;
    
          unsigned int stsc_index;
    
          int stsc_sample;
    
          unsigned int stps_count;
    
          unsigned *stps_data;  ///< partial sync sample for mpeg-2 open gop
    
          MOVElst *elst_data;
    
          unsigned int elst_count;
    
          int ctts_index;
    
          int ctts_sample;
    
          unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
    
          unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
    
          unsigned int sample_count;
    
          int *sample_sizes;
    
          int keyframe_absent;
    
          unsigned int keyframe_count;
    
          int *keyframes;
    
          int time_scale;
    
          int64_t time_offset;  ///< time offset of the edit list entries
    
          int64_t min_corrected_pts;  ///< minimum Composition time shown by the edits excluding empty edits.
    
          int current_sample;
    
          int64_t current_index;
    
          MOVIndexRange* index_ranges;
    
          MOVIndexRange* current_index_range;
    
          unsigned int bytes_per_frame;
    
          unsigned int samples_per_frame;
    
          int dv_audio_container;
    
          int pseudo_stream_id; ///< -1 means demux all ids
    
          int16_t audio_cid;    ///< stsd audio compression id
    
          unsigned drefs_count;
    
          MOVDref *drefs;
    
          int dref_id;
    
          int timecode_track;
    
          int width;            ///< tkhd width
    
          int height;           ///< tkhd height
    
          int dts_shift;        ///< dts shift when ctts is negative
    
          uint32_t palette[256];
    
          int has_palette;
    
          int64_t data_size;
    
          uint32_t tmcd_flags;  ///< tmcd track flags
    
          uint8_t tmcd_nb_frames;  ///< tmcd number of frames per tick / second
    
          int64_t track_end;    ///< used for dts generation in fragmented movie files
    
          int start_pad;        ///< amount of samples to skip due to enc-dec delay
    
          unsigned int rap_group_count;
    
          MOVSbgp *rap_group;
    
          unsigned int sync_group_count;
    
          MOVSbgp *sync_group;
    
          uint8_t *sgpd_sync;
    
          uint32_t sgpd_sync_count;
    
          int32_t *sample_offsets;
    
          int sample_offsets_count;
    
          int *open_key_samples;
    
          int open_key_samples_count;
    
          uint32_t min_sample_duration;
    
          int nb_frames_for_fps;
    
          int64_t duration_for_fps;
    
          /** extradata array (and size) for multiple stsd */
    
          uint8_t **extradata;
    
          int *extradata_size;
    
          int last_stsd_index;
    
          int stsd_count;
    
          int stsd_version;
    
          int32_t *display_matrix;
    
          AVStereo3D *stereo3d;
    
          AVSphericalMapping *spherical;
    
          size_t spherical_size;
    
          AVMasteringDisplayMetadata *mastering;
    
          AVContentLightMetadata *coll;
    
          size_t coll_size;
    
          AVAmbientViewingEnvironment *ambient;
    
          size_t ambient_size;
    
          uint32_t format;
    
          int has_sidx;  // If there is an sidx entry for this stream.
    
          struct {
    
              struct AVAESCTR* aes_ctr;
    
              struct AVAES *aes_ctx;
    
              unsigned int per_sample_iv_size;  // Either 0, 8, or 16.
    
              AVEncryptionInfo *default_encrypted_sample;
    
              MOVEncryptionIndex *encryption_index;
    
          } cenc;
    
          struct IAMFDemuxContext *iamf;
    
      } MOVStreamContext;
    
      typedef struct HEIFItem {
    
          AVStream *st;
    
          char *name;
    
          int item_id;
    
          int64_t extent_length;
    
          int64_t extent_offset;
    
          int width;
    
          int height;
    
          int type;
    
          int is_idat_relative;
    
      } HEIFItem;
    
      typedef struct HEIFGrid {
    
          HEIFItem *item;
    
          HEIFItem **tile_item_list;
    
          int16_t *tile_id_list;
    
          int nb_tiles;
    
      } HEIFGrid;
    
      typedef struct MOVContext {
    
          const AVClass *class; ///< class for private options
    
          AVFormatContext *fc;
    
          int time_scale;
    
          int64_t duration;     ///< duration of the longest track
    
          int found_moov;       ///< 'moov' atom has been found
    
          int found_iloc;       ///< 'iloc' atom has been found
    
          int found_iinf;       ///< 'iinf' atom has been found
    
          int found_mdat;       ///< 'mdat' atom has been found
    
          int found_hdlr_mdta;  ///< 'hdlr' atom with type 'mdta' has been found
    
          int trak_index;       ///< Index of the current 'trak'
    
          char **meta_keys;
    
          unsigned meta_keys_count;
    
          DVDemuxContext *dv_demux;
    
          AVFormatContext *dv_fctx;
    
          int isom;             ///< 1 if file is ISO Media (mp4/3gp)
    
          MOVFragment fragment; ///< current fragment in moof atom
    
          MOVTrackExt *trex_data;
    
          unsigned trex_count;
    
          int itunes_metadata;  ///< metadata are itunes style
    
          int handbrake_version;
    
          int *chapter_tracks;
    
          unsigned int nb_chapter_tracks;
    
          int use_absolute_path;
    
          int ignore_editlist;
    
          int advanced_editlist;
    
          int advanced_editlist_autodisabled;
    
          int ignore_chapters;
    
          int seek_individually;
    
          int64_t next_root_atom; ///< offset of the next root atom
    
          int export_all;
    
          int export_xmp;
    
          int *bitrates;          ///< bitrates read before streams creation
    
          int bitrates_count;
    
          int moov_retry;
    
          int use_mfra_for;
    
          int has_looked_for_mfra;
    
          int use_tfdt;
    
          MOVFragmentIndex frag_index;
    
          int atom_depth;
    
          unsigned int aax_mode;  ///< 'aax' file has been detected
    
          uint8_t file_key[20];
    
          uint8_t file_iv[20];
    
          void *activation_bytes;
    
          int activation_bytes_size;
    
          void *audible_fixed_key;
    
          int audible_fixed_key_size;
    
          void *audible_key;
    
          int audible_key_size;
    
          void *audible_iv;
    
          int audible_iv_size;
    
          struct AVAES *aes_decrypt;
    
          uint8_t *decryption_key;
    
          int decryption_key_len;
    
          int enable_drefs;
    
          int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
    
          int have_read_mfra_size;
    
          uint32_t mfra_size;
    
          uint32_t max_stts_delta;
    
          int primary_item_id;
    
          int cur_item_id;
    
          HEIFItem *heif_item;
    
          int nb_heif_item;
    
          HEIFGrid *heif_grid;
    
          int nb_heif_grid;
    
          int thmb_item_id;
    
          int64_t idat_offset;
    
          int interleaved_read;
    
      } MOVContext;
    
      int ff_mp4_read_descr_len(AVIOContext *pb);
    
      int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
    
      int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
    
      void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
    
      #define MP4ODescrTag                    0x01
    
      #define MP4IODescrTag                   0x02
    
      #define MP4ESDescrTag                   0x03
    
      #define MP4DecConfigDescrTag            0x04
    
      #define MP4DecSpecificDescrTag          0x05
    
      #define MP4SLDescrTag                   0x06
    
      #define MOV_TFHD_BASE_DATA_OFFSET       0x01
    
      #define MOV_TFHD_STSD_ID                0x02
    
      #define MOV_TFHD_DEFAULT_DURATION       0x08
    
      #define MOV_TFHD_DEFAULT_SIZE           0x10
    
      #define MOV_TFHD_DEFAULT_FLAGS          0x20
    
      #define MOV_TFHD_DURATION_IS_EMPTY  0x010000
    
      #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
    
      #define MOV_TRUN_DATA_OFFSET            0x01
    
      #define MOV_TRUN_FIRST_SAMPLE_FLAGS     0x04
    
      #define MOV_TRUN_SAMPLE_DURATION       0x100
    
      #define MOV_TRUN_SAMPLE_SIZE           0x200
    
      #define MOV_TRUN_SAMPLE_FLAGS          0x400
    
      #define MOV_TRUN_SAMPLE_CTS            0x800
    
      #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
    
      #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC               0x00010000
    
      #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK              0x000e0000
    
      #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK           0x00300000
    
      #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK             0x00c00000
    
      #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK              0x03000000
    
      #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO                0x02000000
    
      #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES               0x01000000
    
      #define MOV_TKHD_FLAG_ENABLED       0x0001
    
      #define MOV_TKHD_FLAG_IN_MOVIE      0x0002
    
      #define MOV_TKHD_FLAG_IN_PREVIEW    0x0004
    
      #define MOV_TKHD_FLAG_IN_POSTER     0x0008
    
      #define MOV_SAMPLE_DEPENDENCY_UNKNOWN 0x0
    
      #define MOV_SAMPLE_DEPENDENCY_YES     0x1
    
      #define MOV_SAMPLE_DEPENDENCY_NO      0x2
    
      #define TAG_IS_AVCI(tag)                    \
    
          ((tag) == MKTAG('a', 'i', '5', 'p') ||  \
    
           (tag) == MKTAG('a', 'i', '5', 'q') ||  \
    
           (tag) == MKTAG('a', 'i', '5', '2') ||  \
    
           (tag) == MKTAG('a', 'i', '5', '3') ||  \
    
           (tag) == MKTAG('a', 'i', '5', '5') ||  \
    
           (tag) == MKTAG('a', 'i', '5', '6') ||  \
    
           (tag) == MKTAG('a', 'i', '1', 'p') ||  \
    
           (tag) == MKTAG('a', 'i', '1', 'q') ||  \
    
           (tag) == MKTAG('a', 'i', '1', '2') ||  \
    
           (tag) == MKTAG('a', 'i', '1', '3') ||  \
    
           (tag) == MKTAG('a', 'i', '1', '5') ||  \
    
           (tag) == MKTAG('a', 'i', '1', '6') ||  \
    
           (tag) == MKTAG('a', 'i', 'v', 'x') ||  \
    
           (tag) == MKTAG('A', 'V', 'i', 'n'))
    
      int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb);
    
      int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
    
      void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
    
      #define FF_MOV_FLAG_MFRA_AUTO -1
    
      #define FF_MOV_FLAG_MFRA_DTS 1
    
      #define FF_MOV_FLAG_MFRA_PTS 2
    
      /**
    
       * Compute codec id for 'lpcm' tag.
    
       * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
    
       */
    
      4
      static inline enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
    
      {
    
          /* lpcm flags:
    
           * 0x1 = float
    
           * 0x2 = big-endian
    
           * 0x4 = signed
    
           */
    
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      4
          return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
    
      }
    
      #define MOV_ISMV_TTML_TAG MKTAG('d', 'f', 'x', 'p')
    
      #define MOV_MP4_TTML_TAG  MKTAG('s', 't', 'p', 'p')
    
      #define MOV_MP4_FPCM_TAG  MKTAG('f', 'p', 'c', 'm')
    
      #define MOV_MP4_IPCM_TAG  MKTAG('i', 'p', 'c', 'm')
    
      struct MP4TrackKindValueMapping {
    
          int         disposition;
    
          const char *value;
    
      };
    
      struct MP4TrackKindMapping {
    
          const char   *scheme_uri;
    
          const struct  MP4TrackKindValueMapping *value_maps;
    
      };
    
      extern const struct MP4TrackKindMapping ff_mov_track_kind_table[];
    
      #endif /* AVFORMAT_ISOM_H */

Line	Branch	Exec	Source
1			/*
2			* ISO Media common code
3			* copyright (c) 2001 Fabrice Bellard
4			* copyright (c) 2002 Francois Revol <revol@free.fr>
5			* copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
6			*
7			* This file is part of FFmpeg.
8			*
9			* FFmpeg is free software; you can redistribute it and/or
10			* modify it under the terms of the GNU Lesser General Public
11			* License as published by the Free Software Foundation; either
12			* version 2.1 of the License, or (at your option) any later version.
13			*
14			* FFmpeg is distributed in the hope that it will be useful,
15			* but WITHOUT ANY WARRANTY; without even the implied warranty of
16			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17			* Lesser General Public License for more details.
18			*
19			* You should have received a copy of the GNU Lesser General Public
20			* License along with FFmpeg; if not, write to the Free Software
21			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22			*/
23
24			#ifndef AVFORMAT_ISOM_H
25			#define AVFORMAT_ISOM_H
26
27			#include <stddef.h>
28			#include <stdint.h>
29
30			#include "libavutil/encryption_info.h"
31			#include "libavutil/mastering_display_metadata.h"
32			#include "libavutil/ambient_viewing_environment.h"
33			#include "libavutil/spherical.h"
34			#include "libavutil/stereo3d.h"
35
36			#include "avio.h"
37			#include "internal.h"
38			#include "dv.h"
39
40			/* isom.c */
41			extern const AVCodecTag ff_mp4_obj_type[];
42			extern const AVCodecTag ff_codec_movvideo_tags[];
43			extern const AVCodecTag ff_codec_movaudio_tags[];
44			extern const AVCodecTag ff_codec_movsubtitle_tags[];
45			extern const AVCodecTag ff_codec_movdata_tags[];
46
47			int ff_mov_iso639_to_lang(const char lang[4], int mp4);
48			int ff_mov_lang_to_iso639(unsigned code, char to[4]);
49
50			struct AVAESCTR;
51
52			/* the QuickTime file format is quite convoluted...
53			* it has lots of index tables, each indexing something in another one...
54			* Here we just use what is needed to read the chunks
55			*/
56
57			typedef struct MOVStts {
58			unsigned int count;
59			unsigned int duration;
60			} MOVStts;
61
62			typedef struct MOVCtts {
63			unsigned int count;
64			int duration;
65			} MOVCtts;
66
67			typedef struct MOVStsc {
68			int first;
69			int count;
70			int id;
71			} MOVStsc;
72
73			typedef struct MOVElst {
74			int64_t duration;
75			int64_t time;
76			float rate;
77			} MOVElst;
78
79			typedef struct MOVDref {
80			uint32_t type;
81			char *path;
82			char *dir;
83			char volume[28];
84			char filename[64];
85			int16_t nlvl_to, nlvl_from;
86			} MOVDref;
87
88			typedef struct MOVAtom {
89			uint32_t type;
90			int64_t size; /* total size (excluding the size and type fields) */
91			} MOVAtom;
92
93			struct MOVParseTableEntry;
94
95			typedef struct MOVFragment {
96			int found_tfhd;
97			unsigned track_id;
98			uint64_t base_data_offset;
99			uint64_t moof_offset;
100			uint64_t implicit_offset;
101			unsigned stsd_id;
102			unsigned duration;
103			unsigned size;
104			unsigned flags;
105			} MOVFragment;
106
107			typedef struct MOVTrackExt {
108			unsigned track_id;
109			unsigned stsd_id;
110			unsigned duration;
111			unsigned size;
112			unsigned flags;
113			} MOVTrackExt;
114
115			typedef struct MOVSbgp {
116			unsigned int count;
117			unsigned int index;
118			} MOVSbgp;
119
120			typedef struct MOVEncryptionIndex {
121			// Individual encrypted samples. If there are no elements, then the default
122			// settings will be used.
123			unsigned int nb_encrypted_samples;
124			AVEncryptionInfo **encrypted_samples;
125
126			uint8_t* auxiliary_info_sizes;
127			size_t auxiliary_info_sample_count;
128			uint8_t auxiliary_info_default_size;
129			uint64_t* auxiliary_offsets; ///< Absolute seek position
130			size_t auxiliary_offsets_count;
131			} MOVEncryptionIndex;
132
133			typedef struct MOVFragmentStreamInfo {
134			int id;
135			int64_t sidx_pts;
136			int64_t first_tfra_pts;
137			int64_t tfdt_dts;
138			int64_t next_trun_dts;
139			// Index of the first sample/trun in the fragment.
140			int index_base;
141			int index_entry;
142			MOVEncryptionIndex *encryption_index;
143			int stsd_id; // current fragment stsd_id
144			} MOVFragmentStreamInfo;
145
146			typedef struct MOVFragmentIndexItem {
147			int64_t moof_offset;
148			int headers_read;
149			int current;
150			int nb_stream_info;
151			MOVFragmentStreamInfo * stream_info;
152			} MOVFragmentIndexItem;
153
154			typedef struct MOVFragmentIndex {
155			int allocated_size;
156			int complete;
157			int current;
158			int nb_items;
159			MOVFragmentIndexItem * item;
160			} MOVFragmentIndex;
161
162			typedef struct MOVIndexRange {
163			int64_t start;
164			int64_t end;
165			} MOVIndexRange;
166
167			typedef struct MOVStreamContext {
168			AVIOContext *pb;
169			int refcount;
170			int pb_is_copied;
171			int id; ///< AVStream id
172			int ffindex; ///< AVStream index
173			int next_chunk;
174			unsigned int chunk_count;
175			int64_t *chunk_offsets;
176			unsigned int stts_count;
177			MOVStts *stts_data;
178			unsigned int sdtp_count;
179			uint8_t *sdtp_data;
180			unsigned int ctts_count;
181			unsigned int ctts_allocated_size;
182			MOVCtts *ctts_data;
183			unsigned int stsc_count;
184			MOVStsc *stsc_data;
185			unsigned int stsc_index;
186			int stsc_sample;
187			unsigned int stps_count;
188			unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
189			MOVElst *elst_data;
190			unsigned int elst_count;
191			int ctts_index;
192			int ctts_sample;
193			unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
194			unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
195			unsigned int sample_count;
196			int *sample_sizes;
197			int keyframe_absent;
198			unsigned int keyframe_count;
199			int *keyframes;
200			int time_scale;
201			int64_t time_offset; ///< time offset of the edit list entries
202			int64_t min_corrected_pts; ///< minimum Composition time shown by the edits excluding empty edits.
203			int current_sample;
204			int64_t current_index;
205			MOVIndexRange* index_ranges;
206			MOVIndexRange* current_index_range;
207			unsigned int bytes_per_frame;
208			unsigned int samples_per_frame;
209			int dv_audio_container;
210			int pseudo_stream_id; ///< -1 means demux all ids
211			int16_t audio_cid; ///< stsd audio compression id
212			unsigned drefs_count;
213			MOVDref *drefs;
214			int dref_id;
215			int timecode_track;
216			int width; ///< tkhd width
217			int height; ///< tkhd height
218			int dts_shift; ///< dts shift when ctts is negative
219			uint32_t palette[256];
220			int has_palette;
221			int64_t data_size;
222			uint32_t tmcd_flags; ///< tmcd track flags
223			uint8_t tmcd_nb_frames; ///< tmcd number of frames per tick / second
224			int64_t track_end; ///< used for dts generation in fragmented movie files
225			int start_pad; ///< amount of samples to skip due to enc-dec delay
226			unsigned int rap_group_count;
227			MOVSbgp *rap_group;
228			unsigned int sync_group_count;
229			MOVSbgp *sync_group;
230			uint8_t *sgpd_sync;
231			uint32_t sgpd_sync_count;
232			int32_t *sample_offsets;
233			int sample_offsets_count;
234			int *open_key_samples;
235			int open_key_samples_count;
236			uint32_t min_sample_duration;
237
238			int nb_frames_for_fps;
239			int64_t duration_for_fps;
240
241			/** extradata array (and size) for multiple stsd */
242			uint8_t **extradata;
243			int *extradata_size;
244			int last_stsd_index;
245			int stsd_count;
246			int stsd_version;
247
248			int32_t *display_matrix;
249			AVStereo3D *stereo3d;
250			AVSphericalMapping *spherical;
251			size_t spherical_size;
252			AVMasteringDisplayMetadata *mastering;
253			AVContentLightMetadata *coll;
254			size_t coll_size;
255			AVAmbientViewingEnvironment *ambient;
256			size_t ambient_size;
257
258			uint32_t format;
259
260			int has_sidx; // If there is an sidx entry for this stream.
261			struct {
262			struct AVAESCTR* aes_ctr;
263			struct AVAES *aes_ctx;
264			unsigned int per_sample_iv_size; // Either 0, 8, or 16.
265			AVEncryptionInfo *default_encrypted_sample;
266			MOVEncryptionIndex *encryption_index;
267			} cenc;
268
269			struct IAMFDemuxContext *iamf;
270			} MOVStreamContext;
271
272			typedef struct HEIFItem {
273			AVStream *st;
274			char *name;
275			int item_id;
276			int64_t extent_length;
277			int64_t extent_offset;
278			int width;
279			int height;
280			int type;
281			int is_idat_relative;
282			} HEIFItem;
283
284			typedef struct HEIFGrid {
285			HEIFItem *item;
286			HEIFItem **tile_item_list;
287			int16_t *tile_id_list;
288			int nb_tiles;
289			} HEIFGrid;
290
291			typedef struct MOVContext {
292			const AVClass *class; ///< class for private options
293			AVFormatContext *fc;
294			int time_scale;
295			int64_t duration; ///< duration of the longest track
296			int found_moov; ///< 'moov' atom has been found
297			int found_iloc; ///< 'iloc' atom has been found
298			int found_iinf; ///< 'iinf' atom has been found
299			int found_mdat; ///< 'mdat' atom has been found
300			int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found
301			int trak_index; ///< Index of the current 'trak'
302			char **meta_keys;
303			unsigned meta_keys_count;
304			DVDemuxContext *dv_demux;
305			AVFormatContext *dv_fctx;
306			int isom; ///< 1 if file is ISO Media (mp4/3gp)
307			MOVFragment fragment; ///< current fragment in moof atom
308			MOVTrackExt *trex_data;
309			unsigned trex_count;
310			int itunes_metadata; ///< metadata are itunes style
311			int handbrake_version;
312			int *chapter_tracks;
313			unsigned int nb_chapter_tracks;
314			int use_absolute_path;
315			int ignore_editlist;
316			int advanced_editlist;
317			int advanced_editlist_autodisabled;
318			int ignore_chapters;
319			int seek_individually;
320			int64_t next_root_atom; ///< offset of the next root atom
321			int export_all;
322			int export_xmp;
323			int *bitrates; ///< bitrates read before streams creation
324			int bitrates_count;
325			int moov_retry;
326			int use_mfra_for;
327			int has_looked_for_mfra;
328			int use_tfdt;
329			MOVFragmentIndex frag_index;
330			int atom_depth;
331			unsigned int aax_mode; ///< 'aax' file has been detected
332			uint8_t file_key[20];
333			uint8_t file_iv[20];
334			void *activation_bytes;
335			int activation_bytes_size;
336			void *audible_fixed_key;
337			int audible_fixed_key_size;
338			void *audible_key;
339			int audible_key_size;
340			void *audible_iv;
341			int audible_iv_size;
342			struct AVAES *aes_decrypt;
343			uint8_t *decryption_key;
344			int decryption_key_len;
345			int enable_drefs;
346			int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
347			int have_read_mfra_size;
348			uint32_t mfra_size;
349			uint32_t max_stts_delta;
350			int primary_item_id;
351			int cur_item_id;
352			HEIFItem *heif_item;
353			int nb_heif_item;
354			HEIFGrid *heif_grid;
355			int nb_heif_grid;
356			int thmb_item_id;
357			int64_t idat_offset;
358			int interleaved_read;
359			} MOVContext;
360
361			int ff_mp4_read_descr_len(AVIOContext *pb);
362			int ff_mp4_read_descr(AVFormatContext fc, AVIOContext pb, int *tag);
363			int ff_mp4_read_dec_config_descr(AVFormatContext fc, AVStream st, AVIOContext *pb);
364			void ff_mp4_parse_es_descr(AVIOContext pb, int es_id);
365
366			#define MP4ODescrTag 0x01
367			#define MP4IODescrTag 0x02
368			#define MP4ESDescrTag 0x03
369			#define MP4DecConfigDescrTag 0x04
370			#define MP4DecSpecificDescrTag 0x05
371			#define MP4SLDescrTag 0x06
372
373			#define MOV_TFHD_BASE_DATA_OFFSET 0x01
374			#define MOV_TFHD_STSD_ID 0x02
375			#define MOV_TFHD_DEFAULT_DURATION 0x08
376			#define MOV_TFHD_DEFAULT_SIZE 0x10
377			#define MOV_TFHD_DEFAULT_FLAGS 0x20
378			#define MOV_TFHD_DURATION_IS_EMPTY 0x010000
379			#define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
380
381			#define MOV_TRUN_DATA_OFFSET 0x01
382			#define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
383			#define MOV_TRUN_SAMPLE_DURATION 0x100
384			#define MOV_TRUN_SAMPLE_SIZE 0x200
385			#define MOV_TRUN_SAMPLE_FLAGS 0x400
386			#define MOV_TRUN_SAMPLE_CTS 0x800
387
388			#define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
389			#define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
390			#define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
391			#define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
392			#define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
393			#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
394
395			#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
396			#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
397
398			#define MOV_TKHD_FLAG_ENABLED 0x0001
399			#define MOV_TKHD_FLAG_IN_MOVIE 0x0002
400			#define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
401			#define MOV_TKHD_FLAG_IN_POSTER 0x0008
402
403			#define MOV_SAMPLE_DEPENDENCY_UNKNOWN 0x0
404			#define MOV_SAMPLE_DEPENDENCY_YES 0x1
405			#define MOV_SAMPLE_DEPENDENCY_NO 0x2
406
407
408			#define TAG_IS_AVCI(tag) \
409			((tag) == MKTAG('a', 'i', '5', 'p') \|\| \
410			(tag) == MKTAG('a', 'i', '5', 'q') \|\| \
411			(tag) == MKTAG('a', 'i', '5', '2') \|\| \
412			(tag) == MKTAG('a', 'i', '5', '3') \|\| \
413			(tag) == MKTAG('a', 'i', '5', '5') \|\| \
414			(tag) == MKTAG('a', 'i', '5', '6') \|\| \
415			(tag) == MKTAG('a', 'i', '1', 'p') \|\| \
416			(tag) == MKTAG('a', 'i', '1', 'q') \|\| \
417			(tag) == MKTAG('a', 'i', '1', '2') \|\| \
418			(tag) == MKTAG('a', 'i', '1', '3') \|\| \
419			(tag) == MKTAG('a', 'i', '1', '5') \|\| \
420			(tag) == MKTAG('a', 'i', '1', '6') \|\| \
421			(tag) == MKTAG('a', 'i', 'v', 'x') \|\| \
422			(tag) == MKTAG('A', 'V', 'i', 'n'))
423
424
425			int ff_mov_read_esds(AVFormatContext fc, AVIOContext pb);
426
427			int ff_mov_read_stsd_entries(MOVContext c, AVIOContext pb, int entries);
428			void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
429
430			#define FF_MOV_FLAG_MFRA_AUTO -1
431			#define FF_MOV_FLAG_MFRA_DTS 1
432			#define FF_MOV_FLAG_MFRA_PTS 2
433
434			/**
435			* Compute codec id for 'lpcm' tag.
436			* See CoreAudioTypes and AudioStreamBasicDescription at Apple.
437			*/
438		4	static inline enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
439			{
440			/* lpcm flags:
441			* 0x1 = float
442			* 0x2 = big-endian
443			* 0x4 = signed
444			*/
445	1/2 ✓ Branch 0 taken 4 times. ✗ Branch 1 not taken.	4	return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
446			}
447
448			#define MOV_ISMV_TTML_TAG MKTAG('d', 'f', 'x', 'p')
449			#define MOV_MP4_TTML_TAG MKTAG('s', 't', 'p', 'p')
450			#define MOV_MP4_FPCM_TAG MKTAG('f', 'p', 'c', 'm')
451			#define MOV_MP4_IPCM_TAG MKTAG('i', 'p', 'c', 'm')
452
453			struct MP4TrackKindValueMapping {
454			int disposition;
455			const char *value;
456			};
457
458			struct MP4TrackKindMapping {
459			const char *scheme_uri;
460			const struct MP4TrackKindValueMapping *value_maps;
461			};
462
463			extern const struct MP4TrackKindMapping ff_mov_track_kind_table[];
464
465			#endif /* AVFORMAT_ISOM_H */
466