FFmpeg  3.4.9
isom.h
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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 
31 #include "libavutil/spherical.h"
32 #include "libavutil/stereo3d.h"
33 
34 #include "avio.h"
35 #include "internal.h"
36 #include "dv.h"
37 
38 /* isom.c */
39 extern const AVCodecTag ff_mp4_obj_type[];
40 extern const AVCodecTag ff_codec_movvideo_tags[];
41 extern const AVCodecTag ff_codec_movaudio_tags[];
43 
44 int ff_mov_iso639_to_lang(const char lang[4], int mp4);
45 int ff_mov_lang_to_iso639(unsigned code, char to[4]);
46 
47 struct AVAESCTR;
48 
49 /* the QuickTime file format is quite convoluted...
50  * it has lots of index tables, each indexing something in another one...
51  * Here we just use what is needed to read the chunks
52  */
53 
54 typedef struct MOVStts {
55  unsigned int count;
56  int duration;
57 } MOVStts;
58 
59 typedef struct MOVStsc {
60  int first;
61  int count;
62  int id;
63 } MOVStsc;
64 
65 typedef struct MOVElst {
66  int64_t duration;
67  int64_t time;
68  float rate;
69 } MOVElst;
70 
71 typedef struct MOVDref {
72  uint32_t type;
73  char *path;
74  char *dir;
75  char volume[28];
76  char filename[64];
77  int16_t nlvl_to, nlvl_from;
78 } MOVDref;
79 
80 typedef struct MOVAtom {
81  uint32_t type;
82  int64_t size; /* total size (excluding the size and type fields) */
83 } MOVAtom;
84 
85 struct MOVParseTableEntry;
86 
87 typedef struct MOVFragment {
89  unsigned track_id;
90  uint64_t base_data_offset;
91  uint64_t moof_offset;
92  uint64_t implicit_offset;
93  unsigned stsd_id;
94  unsigned duration;
95  unsigned size;
96  unsigned flags;
97  int64_t time;
98 } MOVFragment;
99 
100 typedef struct MOVTrackExt {
101  unsigned track_id;
102  unsigned stsd_id;
103  unsigned duration;
104  unsigned size;
105  unsigned flags;
106 } MOVTrackExt;
107 
108 typedef struct MOVSbgp {
109  unsigned int count;
110  unsigned int index;
111 } MOVSbgp;
112 
113 typedef struct MOVFragmentIndexItem {
114  int64_t moof_offset;
115  int64_t time;
118 
119 typedef struct MOVFragmentIndex {
120  unsigned track_id;
121  unsigned item_count;
122  unsigned current_item;
125 
126 typedef struct MOVIndexRange {
127  int64_t start;
128  int64_t end;
129 } MOVIndexRange;
130 
131 typedef struct MOVStreamContext {
134  int ffindex; ///< AVStream index
136  unsigned int chunk_count;
137  int64_t *chunk_offsets;
138  unsigned int stts_count;
140  unsigned int ctts_count;
141  unsigned int ctts_allocated_size;
143  unsigned int stsc_count;
145  unsigned int stsc_index;
147  unsigned int stps_count;
148  unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
150  unsigned int elst_count;
153  unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
154  unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
155  unsigned int sample_count;
158  unsigned int keyframe_count;
159  int *keyframes;
161  int64_t time_offset; ///< time offset of the edit list entries
163  int64_t current_index;
166  unsigned int bytes_per_frame;
167  unsigned int samples_per_frame;
169  int pseudo_stream_id; ///< -1 means demux all ids
170  int16_t audio_cid; ///< stsd audio compression id
171  unsigned drefs_count;
173  int dref_id;
175  int width; ///< tkhd width
176  int height; ///< tkhd height
177  int dts_shift; ///< dts shift when ctts is negative
178  uint32_t palette[256];
180  int64_t data_size;
181  uint32_t tmcd_flags; ///< tmcd track flags
182  int64_t track_end; ///< used for dts generation in fragmented movie files
183  int start_pad; ///< amount of samples to skip due to enc-dec delay
184  unsigned int rap_group_count;
186 
189 
190  /** extradata array (and size) for multiple stsd */
195 
202  size_t coll_size;
203 
204  uint32_t format;
205 
206  int has_sidx; // If there is an sidx entry for this stream.
207  struct {
216  struct AVAESCTR* aes_ctr;
217  } cenc;
219 
220 typedef struct MOVContext {
221  const AVClass *class; ///< class for private options
224  int64_t duration; ///< duration of the longest track
225  int found_moov; ///< 'moov' atom has been found
226  int found_mdat; ///< 'mdat' atom has been found
227  int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found
228  int trak_index; ///< Index of the current 'trak'
229  char **meta_keys;
230  unsigned meta_keys_count;
233  int isom; ///< 1 if file is ISO Media (mp4/3gp)
234  MOVFragment fragment; ///< current fragment in moof atom
236  unsigned trex_count;
237  int itunes_metadata; ///< metadata are itunes style
240  unsigned int nb_chapter_tracks;
246  int64_t next_root_atom; ///< offset of the next root atom
249  int *bitrates; ///< bitrates read before streams creation
258  unsigned int aax_mode; ///< 'aax' file has been detected
259  uint8_t file_key[20];
260  uint8_t file_iv[20];
269  int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
270 } MOVContext;
271 
275 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
276 
277 #define MP4ODescrTag 0x01
278 #define MP4IODescrTag 0x02
279 #define MP4ESDescrTag 0x03
280 #define MP4DecConfigDescrTag 0x04
281 #define MP4DecSpecificDescrTag 0x05
282 #define MP4SLDescrTag 0x06
283 
284 #define MOV_TFHD_BASE_DATA_OFFSET 0x01
285 #define MOV_TFHD_STSD_ID 0x02
286 #define MOV_TFHD_DEFAULT_DURATION 0x08
287 #define MOV_TFHD_DEFAULT_SIZE 0x10
288 #define MOV_TFHD_DEFAULT_FLAGS 0x20
289 #define MOV_TFHD_DURATION_IS_EMPTY 0x010000
290 #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
291 
292 #define MOV_TRUN_DATA_OFFSET 0x01
293 #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
294 #define MOV_TRUN_SAMPLE_DURATION 0x100
295 #define MOV_TRUN_SAMPLE_SIZE 0x200
296 #define MOV_TRUN_SAMPLE_FLAGS 0x400
297 #define MOV_TRUN_SAMPLE_CTS 0x800
298 
299 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
300 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
301 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
302 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
303 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
304 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
305 
306 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
307 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
308 
309 #define MOV_TKHD_FLAG_ENABLED 0x0001
310 #define MOV_TKHD_FLAG_IN_MOVIE 0x0002
311 #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
312 #define MOV_TKHD_FLAG_IN_POSTER 0x0008
313 
314 #define TAG_IS_AVCI(tag) \
315  ((tag) == MKTAG('a', 'i', '5', 'p') || \
316  (tag) == MKTAG('a', 'i', '5', 'q') || \
317  (tag) == MKTAG('a', 'i', '5', '2') || \
318  (tag) == MKTAG('a', 'i', '5', '3') || \
319  (tag) == MKTAG('a', 'i', '5', '5') || \
320  (tag) == MKTAG('a', 'i', '5', '6') || \
321  (tag) == MKTAG('a', 'i', '1', 'p') || \
322  (tag) == MKTAG('a', 'i', '1', 'q') || \
323  (tag) == MKTAG('a', 'i', '1', '2') || \
324  (tag) == MKTAG('a', 'i', '1', '3') || \
325  (tag) == MKTAG('a', 'i', '1', '5') || \
326  (tag) == MKTAG('a', 'i', '1', '6') || \
327  (tag) == MKTAG('a', 'i', 'v', 'x') || \
328  (tag) == MKTAG('A', 'V', 'i', 'n'))
329 
330 
333 
334 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
335 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
336 
337 #define FF_MOV_FLAG_MFRA_AUTO -1
338 #define FF_MOV_FLAG_MFRA_DTS 1
339 #define FF_MOV_FLAG_MFRA_PTS 2
340 
341 #endif /* AVFORMAT_ISOM_H */
int itunes_metadata
metadata are itunes style
Definition: isom.h:237
int * bitrates
bitrates read before streams creation
Definition: isom.h:249
int64_t current_index
Definition: isom.h:163
int64_t moof_offset
Definition: isom.h:114
Bytestream IO Context.
Definition: avio.h:161
Buffered I/O operations.
uint32_t tmcd_flags
tmcd track flags
Definition: isom.h:181
const AVCodecTag ff_mp4_obj_type[]
Definition: isom.c:34
uint8_t * auxiliary_info_end
Definition: isom.h:210
unsigned int rap_group_count
Definition: isom.h:184
int found_tfhd
Definition: isom.h:88
unsigned int elst_count
Definition: isom.h:150
MOVTrackExt * trex_data
Definition: isom.h:235
int export_all
Definition: isom.h:247
int64_t end
Definition: isom.h:128
unsigned track_id
Definition: isom.h:89
uint32_t format
Definition: isom.h:204
unsigned int samples_per_frame
Definition: isom.h:167
int dv_audio_container
Definition: isom.h:168
Definition: isom.h:54
float rate
Definition: isom.h:68
uint64_t base_data_offset
Definition: isom.h:90
int64_t duration
Definition: isom.h:66
size_t spherical_size
Definition: isom.h:199
unsigned int ctts_allocated_size
Definition: isom.h:141
unsigned int stsc_count
Definition: isom.h:143
int has_palette
Definition: isom.h:179
AVMasteringDisplayMetadata * mastering
Definition: isom.h:200
unsigned item_count
Definition: isom.h:121
uint8_t * decryption_key
Definition: isom.h:266
int ignore_chapters
Definition: isom.h:244
void * activation_bytes
Definition: isom.h:261
int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
Definition: isom.c:497
int16_t audio_cid
stsd audio compression id
Definition: isom.h:170
char ** meta_keys
Definition: isom.h:229
int height
tkhd height
Definition: isom.h:176
uint32_t type
Definition: isom.h:81
MOVElst * elst_data
Definition: isom.h:149
MOVStsc * stsc_data
Definition: isom.h:144
unsigned fragment_index_count
Definition: isom.h:255
int ctts_index
Definition: isom.h:151
unsigned stsd_id
Definition: isom.h:102
AVSphericalMapping * spherical
Definition: isom.h:198
int found_moov
&#39;moov&#39; atom has been found
Definition: isom.h:225
unsigned flags
Definition: isom.h:105
int isom
1 if file is ISO Media (mp4/3gp)
Definition: isom.h:233
int found_mdat
&#39;mdat&#39; atom has been found
Definition: isom.h:226
int width
tkhd width
Definition: isom.h:175
unsigned drefs_count
Definition: isom.h:171
Format I/O context.
Definition: avformat.h:1349
const AVCodecTag ff_codec_movvideo_tags[]
Definition: isom.c:75
MOVDref * drefs
Definition: isom.h:172
int fragment_index_complete
Definition: isom.h:256
const AVCodecTag ff_codec_movaudio_tags[]
Definition: isom.c:311
uint8_t
int first
Definition: isom.h:60
uint8_t * auxiliary_info
Definition: isom.h:209
size_t coll_size
Definition: isom.h:202
int ff_mp4_read_descr_len(AVIOContext *pb)
Definition: isom.c:450
Stereo 3D type: this structure describes how two videos are packed within a single video surface...
Definition: stereo3d.h:157
unsigned int sample_count
Definition: isom.h:155
int count
Definition: isom.h:61
int dts_shift
dts shift when ctts is negative
Definition: isom.h:177
uint8_t * auxiliary_info_pos
Definition: isom.h:211
unsigned int count
Definition: isom.h:109
int16_t nlvl_to
Definition: isom.h:77
int stsd_count
Definition: isom.h:194
int activation_bytes_size
Definition: isom.h:262
MOVFragmentIndex ** fragment_index_data
Definition: isom.h:254
static int flags
Definition: log.c:57
uint32_t tag
Definition: movenc.c:1414
int nb_frames_for_fps
Definition: isom.h:187
struct AVAESCTR * aes_ctr
Definition: isom.h:216
const AVCodecTag ff_codec_movsubtitle_tags[]
Definition: isom.c:368
int current_sample
Definition: isom.h:162
unsigned track_id
Definition: isom.h:101
const char * to
Definition: webvttdec.c:34
int64_t time_offset
time offset of the edit list entries
Definition: isom.h:161
unsigned int keyframe_count
Definition: isom.h:158
MOVIndexRange * index_ranges
Definition: isom.h:164
int * extradata_size
Definition: isom.h:192
Content light level needed by to transmit HDR over HDMI (CTA-861.3).
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:214
unsigned int ctts_count
Definition: isom.h:140
int stsc_sample
Definition: isom.h:146
int atom_depth
Definition: isom.h:257
MOVIndexRange * current_index_range
Definition: isom.h:165
int * keyframes
Definition: isom.h:159
AVFormatContext * fc
Definition: isom.h:222
int handbrake_version
Definition: isom.h:238
int ctts_sample
Definition: isom.h:152
int keyframe_absent
Definition: isom.h:157
void * audible_fixed_key
Definition: isom.h:263
int use_subsamples
Definition: isom.h:208
AVContentLightMetadata * coll
Definition: isom.h:201
int64_t time
Definition: isom.h:115
struct AVAES * aes_decrypt
Definition: isom.h:265
static const uint16_t fc[]
Definition: dcaenc.h:43
uint8_t auxiliary_info_default_size
Definition: isom.h:212
Spherical video.
char * dir
Definition: isom.h:74
int id
Definition: isom.h:62
int decryption_key_len
Definition: isom.h:267
int32_t
int audible_fixed_key_size
Definition: isom.h:264
int advanced_editlist
Definition: isom.h:243
char * path
Definition: isom.h:73
int time_scale
Definition: isom.h:160
int64_t time
Definition: isom.h:97
MOVFragmentIndexItem * items
Definition: isom.h:123
Definition: isom.h:108
uint64_t moof_offset
Definition: isom.h:91
MOVStts * ctts_data
Definition: isom.h:142
unsigned size
Definition: isom.h:104
void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
Definition: isom.c:626
int ignore_editlist
Definition: isom.h:242
int64_t * chunk_offsets
Definition: isom.h:137
unsigned int index
Definition: isom.h:110
int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
Definition: mov.c:774
unsigned current_item
Definition: isom.h:122
size_t auxiliary_info_sizes_count
Definition: isom.h:214
int64_t duration
duration of the longest track
Definition: isom.h:224
Stream structure.
Definition: avformat.h:889
unsigned duration
Definition: isom.h:103
DVDemuxContext * dv_demux
Definition: isom.h:231
int timecode_track
Definition: isom.h:174
int * sample_sizes
Definition: isom.h:156
unsigned duration
Definition: isom.h:94
MOVSbgp * rap_group
Definition: isom.h:185
int duration
Definition: isom.h:56
int64_t auxiliary_info_index
Definition: isom.h:215
int * chapter_tracks
Definition: isom.h:239
unsigned int stsz_sample_size
always contains sample size from stsz atom
Definition: isom.h:154
unsigned trex_count
Definition: isom.h:236
int enable_drefs
Definition: isom.h:268
int64_t data_size
Definition: isom.h:180
int has_looked_for_mfra
Definition: isom.h:253
uint32_t type
Definition: isom.h:72
unsigned int count
Definition: isom.h:55
MOVStts * stts_data
Definition: isom.h:139
Describe the class of an AVClass context structure.
Definition: log.h:67
unsigned int aax_mode
&#39;aax&#39; file has been detected
Definition: isom.h:258
Copyright (c) 2016 Neil Birkbeck neil.birkbeck@gmail.com
MOVFragment fragment
current fragment in moof atom
Definition: isom.h:234
int64_t track_end
used for dts generation in fragmented movie files
Definition: isom.h:182
Definition: isom.h:80
int use_mfra_for
Definition: isom.h:252
int64_t time
Definition: isom.h:67
int pb_is_copied
Definition: isom.h:133
int ff_mov_lang_to_iso639(unsigned code, char to[4])
Definition: isom.c:428
This structure describes how to handle spherical videos, outlining information about projection...
Definition: spherical.h:82
int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
Definition: mov.c:2271
int next_chunk
Definition: isom.h:135
AVFormatContext * dv_fctx
Definition: isom.h:232
unsigned int stsc_index
Definition: isom.h:145
int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag)
Definition: isom.c:463
uint64_t implicit_offset
Definition: isom.h:92
AVStereo3D * stereo3d
Definition: isom.h:197
unsigned * stps_data
partial sync sample for mpeg-2 open gop
Definition: isom.h:148
uint8_t * auxiliary_info_sizes
Definition: isom.h:213
int ff_mov_iso639_to_lang(const char lang[4], int mp4)
Definition: isom.c:401
int start_pad
amount of samples to skip due to enc-dec delay
Definition: isom.h:183
int trak_index
Index of the current &#39;trak&#39;.
Definition: isom.h:228
int32_t * display_matrix
Definition: isom.h:196
AVIOContext * pb
Definition: isom.h:132
unsigned int bytes_per_frame
Definition: isom.h:166
unsigned flags
Definition: isom.h:96
int bitrates_count
Definition: isom.h:250
int64_t size
Definition: isom.h:82
int export_xmp
Definition: isom.h:248
int seek_individually
Definition: isom.h:245
static double c[64]
unsigned int stps_count
Definition: isom.h:147
unsigned int chunk_count
Definition: isom.h:136
Stereoscopic video.
unsigned bps
Definition: movenc.c:1415
int64_t start
Definition: isom.h:127
unsigned meta_keys_count
Definition: isom.h:230
unsigned stsd_id
Definition: isom.h:93
unsigned int stts_count
Definition: isom.h:138
unsigned int sample_size
may contain value calculated from stsd or value from stsz atom
Definition: isom.h:153
enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
Compute codec id for &#39;lpcm&#39; tag.
Definition: mov.c:1828
int64_t next_root_atom
offset of the next root atom
Definition: isom.h:246
int last_stsd_index
Definition: isom.h:193
unsigned int nb_chapter_tracks
Definition: isom.h:240
int time_scale
Definition: isom.h:223
void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id)
Definition: isom.c:472
Definition: isom.h:65
int pseudo_stream_id
-1 means demux all ids
Definition: isom.h:169
int ffindex
AVStream index.
Definition: isom.h:134
uint8_t ** extradata
extradata array (and size) for multiple stsd
Definition: isom.h:191
int use_absolute_path
Definition: isom.h:241
unsigned size
Definition: isom.h:95
int64_t duration_for_fps
Definition: isom.h:188
unsigned track_id
Definition: isom.h:120
int moov_retry
Definition: isom.h:251
int found_hdlr_mdta
&#39;hdlr&#39; atom with type &#39;mdta&#39; has been found
Definition: isom.h:227
Definition: isom.h:59
int has_sidx
Definition: isom.h:206
Definition: isom.h:71