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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  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 {
88  unsigned track_id;
89  uint64_t base_data_offset;
90  uint64_t moof_offset;
91  uint64_t implicit_offset;
92  unsigned stsd_id;
93  unsigned duration;
94  unsigned size;
95  unsigned flags;
96  int64_t time;
97 } MOVFragment;
98 
99 typedef struct MOVTrackExt {
100  unsigned track_id;
101  unsigned stsd_id;
102  unsigned duration;
103  unsigned size;
104  unsigned flags;
105 } MOVTrackExt;
106 
107 typedef struct MOVSbgp {
108  unsigned int count;
109  unsigned int index;
110 } MOVSbgp;
111 
112 typedef struct MOVFragmentIndexItem {
113  int64_t moof_offset;
114  int64_t time;
117 
118 typedef struct MOVFragmentIndex {
119  unsigned track_id;
120  unsigned item_count;
121  unsigned current_item;
124 
125 typedef struct MOVIndexRange {
126  int64_t start;
127  int64_t end;
128 } MOVIndexRange;
129 
130 typedef struct MOVStreamContext {
133  int ffindex; ///< AVStream index
135  unsigned int chunk_count;
136  int64_t *chunk_offsets;
137  unsigned int stts_count;
139  unsigned int ctts_count;
141  unsigned int stsc_count;
145  unsigned int stps_count;
146  unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
148  unsigned int elst_count;
151  unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
152  unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
153  unsigned int sample_count;
156  unsigned int keyframe_count;
157  int *keyframes;
159  int64_t time_offset; ///< time offset of the edit list entries
161  int64_t current_index;
164  unsigned int bytes_per_frame;
165  unsigned int samples_per_frame;
167  int pseudo_stream_id; ///< -1 means demux all ids
168  int16_t audio_cid; ///< stsd audio compression id
169  unsigned drefs_count;
171  int dref_id;
173  int width; ///< tkhd width
174  int height; ///< tkhd height
175  int dts_shift; ///< dts shift when ctts is negative
176  uint32_t palette[256];
178  int64_t data_size;
179  uint32_t tmcd_flags; ///< tmcd track flags
180  int64_t track_end; ///< used for dts generation in fragmented movie files
181  int start_pad; ///< amount of samples to skip due to enc-dec delay
182  unsigned int rap_group_count;
184 
187 
188  /** extradata array (and size) for multiple stsd */
193 
200  size_t coll_size;
201 
202  uint32_t format;
203 
204  int has_sidx; // If there is an sidx entry for this stream.
205  struct {
214  struct AVAESCTR* aes_ctr;
215  } cenc;
217 
218 typedef struct MOVContext {
219  const AVClass *class; ///< class for private options
222  int64_t duration; ///< duration of the longest track
223  int found_moov; ///< 'moov' atom has been found
224  int found_mdat; ///< 'mdat' atom has been found
225  int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found
226  int trak_index; ///< Index of the current 'trak'
227  char **meta_keys;
228  unsigned meta_keys_count;
231  int isom; ///< 1 if file is ISO Media (mp4/3gp)
232  MOVFragment fragment; ///< current fragment in moof atom
234  unsigned trex_count;
235  int itunes_metadata; ///< metadata are itunes style
238  unsigned int nb_chapter_tracks;
244  int64_t next_root_atom; ///< offset of the next root atom
247  int *bitrates; ///< bitrates read before streams creation
256  unsigned int aax_mode; ///< 'aax' file has been detected
267  int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
268 } MOVContext;
269 
273 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
274 
275 #define MP4ODescrTag 0x01
276 #define MP4IODescrTag 0x02
277 #define MP4ESDescrTag 0x03
278 #define MP4DecConfigDescrTag 0x04
279 #define MP4DecSpecificDescrTag 0x05
280 #define MP4SLDescrTag 0x06
281 
282 #define MOV_TFHD_BASE_DATA_OFFSET 0x01
283 #define MOV_TFHD_STSD_ID 0x02
284 #define MOV_TFHD_DEFAULT_DURATION 0x08
285 #define MOV_TFHD_DEFAULT_SIZE 0x10
286 #define MOV_TFHD_DEFAULT_FLAGS 0x20
287 #define MOV_TFHD_DURATION_IS_EMPTY 0x010000
288 #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
289 
290 #define MOV_TRUN_DATA_OFFSET 0x01
291 #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
292 #define MOV_TRUN_SAMPLE_DURATION 0x100
293 #define MOV_TRUN_SAMPLE_SIZE 0x200
294 #define MOV_TRUN_SAMPLE_FLAGS 0x400
295 #define MOV_TRUN_SAMPLE_CTS 0x800
296 
297 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
298 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
299 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
300 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
301 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
302 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
303 
304 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
305 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
306 
307 #define MOV_TKHD_FLAG_ENABLED 0x0001
308 #define MOV_TKHD_FLAG_IN_MOVIE 0x0002
309 #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
310 #define MOV_TKHD_FLAG_IN_POSTER 0x0008
311 
312 #define TAG_IS_AVCI(tag) \
313  ((tag) == MKTAG('a', 'i', '5', 'p') || \
314  (tag) == MKTAG('a', 'i', '5', 'q') || \
315  (tag) == MKTAG('a', 'i', '5', '2') || \
316  (tag) == MKTAG('a', 'i', '5', '3') || \
317  (tag) == MKTAG('a', 'i', '5', '5') || \
318  (tag) == MKTAG('a', 'i', '5', '6') || \
319  (tag) == MKTAG('a', 'i', '1', 'p') || \
320  (tag) == MKTAG('a', 'i', '1', 'q') || \
321  (tag) == MKTAG('a', 'i', '1', '2') || \
322  (tag) == MKTAG('a', 'i', '1', '3') || \
323  (tag) == MKTAG('a', 'i', '1', '5') || \
324  (tag) == MKTAG('a', 'i', '1', '6') || \
325  (tag) == MKTAG('a', 'i', 'v', 'x') || \
326  (tag) == MKTAG('A', 'V', 'i', 'n'))
327 
328 
331 
332 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
333 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
334 
335 #define FF_MOV_FLAG_MFRA_AUTO -1
336 #define FF_MOV_FLAG_MFRA_DTS 1
337 #define FF_MOV_FLAG_MFRA_PTS 2
338 
339 #endif /* AVFORMAT_ISOM_H */
int itunes_metadata
metadata are itunes style
Definition: isom.h:235
int * bitrates
bitrates read before streams creation
Definition: isom.h:247
int64_t current_index
Definition: isom.h:161
int64_t moof_offset
Definition: isom.h:113
Bytestream IO Context.
Definition: avio.h:161
Buffered I/O operations.
uint32_t tmcd_flags
tmcd track flags
Definition: isom.h:179
const AVCodecTag ff_mp4_obj_type[]
Definition: isom.c:34
uint8_t * auxiliary_info_end
Definition: isom.h:208
unsigned int rap_group_count
Definition: isom.h:182
unsigned int elst_count
Definition: isom.h:148
MOVTrackExt * trex_data
Definition: isom.h:233
int export_all
Definition: isom.h:245
int64_t end
Definition: isom.h:127
unsigned track_id
Definition: isom.h:88
uint32_t format
Definition: isom.h:202
unsigned int samples_per_frame
Definition: isom.h:165
int dv_audio_container
Definition: isom.h:166
Definition: isom.h:54
float rate
Definition: isom.h:68
uint64_t base_data_offset
Definition: isom.h:89
int64_t duration
Definition: isom.h:66
size_t spherical_size
Definition: isom.h:197
unsigned int stsc_count
Definition: isom.h:141
int has_palette
Definition: isom.h:177
struct MOVStreamContext::@214 cenc
AVMasteringDisplayMetadata * mastering
Definition: isom.h:198
unsigned item_count
Definition: isom.h:120
uint8_t * decryption_key
Definition: isom.h:264
int ignore_chapters
Definition: isom.h:242
void * activation_bytes
Definition: isom.h:259
int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
Definition: isom.c:495
int16_t audio_cid
stsd audio compression id
Definition: isom.h:168
char ** meta_keys
Definition: isom.h:227
int height
tkhd height
Definition: isom.h:174
uint32_t type
Definition: isom.h:81
MOVElst * elst_data
Definition: isom.h:147
MOVStsc * stsc_data
Definition: isom.h:142
unsigned fragment_index_count
Definition: isom.h:253
int ctts_index
Definition: isom.h:149
unsigned stsd_id
Definition: isom.h:101
AVSphericalMapping * spherical
Definition: isom.h:196
int found_moov
'moov' atom has been found
Definition: isom.h:223
unsigned flags
Definition: isom.h:104
int isom
1 if file is ISO Media (mp4/3gp)
Definition: isom.h:231
int found_mdat
'mdat' atom has been found
Definition: isom.h:224
int width
tkhd width
Definition: isom.h:173
unsigned drefs_count
Definition: isom.h:169
Format I/O context.
Definition: avformat.h:1349
const AVCodecTag ff_codec_movvideo_tags[]
Definition: isom.c:75
char filename[64]
Definition: isom.h:76
MOVDref * drefs
Definition: isom.h:170
int fragment_index_complete
Definition: isom.h:254
const AVCodecTag ff_codec_movaudio_tags[]
Definition: isom.c:309
uint8_t
int first
Definition: isom.h:60
uint8_t * auxiliary_info
Definition: isom.h:207
size_t coll_size
Definition: isom.h:200
int ff_mp4_read_descr_len(AVIOContext *pb)
Definition: isom.c:448
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:153
int count
Definition: isom.h:61
int dts_shift
dts shift when ctts is negative
Definition: isom.h:175
uint8_t * auxiliary_info_pos
Definition: isom.h:209
unsigned int count
Definition: isom.h:108
int16_t nlvl_to
Definition: isom.h:77
char volume[28]
Definition: isom.h:75
int stsd_count
Definition: isom.h:192
int activation_bytes_size
Definition: isom.h:260
MOVFragmentIndex ** fragment_index_data
Definition: isom.h:252
static int flags
Definition: log.c:57
uint32_t tag
Definition: movenc.c:1407
int nb_frames_for_fps
Definition: isom.h:185
struct AVAESCTR * aes_ctr
Definition: isom.h:214
const AVCodecTag ff_codec_movsubtitle_tags[]
Definition: isom.c:366
int current_sample
Definition: isom.h:160
int32_t movie_display_matrix[3][3]
display matrix from mvhd
Definition: isom.h:267
unsigned track_id
Definition: isom.h:100
const char * to
Definition: webvttdec.c:34
int64_t time_offset
time offset of the edit list entries
Definition: isom.h:159
unsigned int keyframe_count
Definition: isom.h:156
MOVIndexRange * index_ranges
Definition: isom.h:162
int * extradata_size
Definition: isom.h:190
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:139
int stsc_sample
Definition: isom.h:144
int atom_depth
Definition: isom.h:255
MOVIndexRange * current_index_range
Definition: isom.h:163
int * keyframes
Definition: isom.h:157
AVFormatContext * fc
Definition: isom.h:220
int handbrake_version
Definition: isom.h:236
int ctts_sample
Definition: isom.h:150
int keyframe_absent
Definition: isom.h:155
int16_t nlvl_from
Definition: isom.h:77
void * audible_fixed_key
Definition: isom.h:261
int use_subsamples
Definition: isom.h:206
AVContentLightMetadata * coll
Definition: isom.h:199
int64_t time
Definition: isom.h:114
int stsc_index
Definition: isom.h:143
uint8_t file_key[20]
Definition: isom.h:257
struct AVAES * aes_decrypt
Definition: isom.h:263
static const uint16_t fc[]
Definition: dcaenc.h:43
uint8_t auxiliary_info_default_size
Definition: isom.h:210
Spherical video.
char * dir
Definition: isom.h:74
int id
Definition: isom.h:62
int decryption_key_len
Definition: isom.h:265
int32_t
int audible_fixed_key_size
Definition: isom.h:262
int advanced_editlist
Definition: isom.h:241
char * path
Definition: isom.h:73
int time_scale
Definition: isom.h:158
int64_t time
Definition: isom.h:96
MOVFragmentIndexItem * items
Definition: isom.h:122
Definition: isom.h:107
uint64_t moof_offset
Definition: isom.h:90
MOVStts * ctts_data
Definition: isom.h:140
unsigned size
Definition: isom.h:103
void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
Definition: isom.c:624
int ignore_editlist
Definition: isom.h:240
int64_t * chunk_offsets
Definition: isom.h:136
unsigned int index
Definition: isom.h:109
int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
Definition: mov.c:768
unsigned current_item
Definition: isom.h:121
size_t auxiliary_info_sizes_count
Definition: isom.h:212
int64_t duration
duration of the longest track
Definition: isom.h:222
Stream structure.
Definition: avformat.h:889
unsigned duration
Definition: isom.h:102
DVDemuxContext * dv_demux
Definition: isom.h:229
int timecode_track
Definition: isom.h:172
int * sample_sizes
Definition: isom.h:154
unsigned duration
Definition: isom.h:93
MOVSbgp * rap_group
Definition: isom.h:183
int duration
Definition: isom.h:56
int64_t auxiliary_info_index
Definition: isom.h:213
int * chapter_tracks
Definition: isom.h:237
unsigned int stsz_sample_size
always contains sample size from stsz atom
Definition: isom.h:152
unsigned trex_count
Definition: isom.h:234
int enable_drefs
Definition: isom.h:266
int64_t data_size
Definition: isom.h:178
int has_looked_for_mfra
Definition: isom.h:251
uint32_t type
Definition: isom.h:72
MOVStts * stts_data
Definition: isom.h:138
Describe the class of an AVClass context structure.
Definition: log.h:67
int count
Definition: isom.h:55
unsigned int aax_mode
'aax' file has been detected
Definition: isom.h:256
Copyright (c) 2016 Neil Birkbeck neil.birkbeck@gmail.com
MOVFragment fragment
current fragment in moof atom
Definition: isom.h:232
int64_t track_end
used for dts generation in fragmented movie files
Definition: isom.h:180
Definition: isom.h:80
int use_mfra_for
Definition: isom.h:250
int64_t time
Definition: isom.h:67
int pb_is_copied
Definition: isom.h:132
int ff_mov_lang_to_iso639(unsigned code, char to[4])
Definition: isom.c:426
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:2254
int next_chunk
Definition: isom.h:134
AVFormatContext * dv_fctx
Definition: isom.h:230
int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag)
Definition: isom.c:461
uint64_t implicit_offset
Definition: isom.h:91
AVStereo3D * stereo3d
Definition: isom.h:195
unsigned * stps_data
partial sync sample for mpeg-2 open gop
Definition: isom.h:146
uint8_t * auxiliary_info_sizes
Definition: isom.h:211
int ff_mov_iso639_to_lang(const char lang[4], int mp4)
Definition: isom.c:399
int start_pad
amount of samples to skip due to enc-dec delay
Definition: isom.h:181
int trak_index
Index of the current 'trak'.
Definition: isom.h:226
int32_t * display_matrix
Definition: isom.h:194
AVIOContext * pb
Definition: isom.h:131
unsigned int bytes_per_frame
Definition: isom.h:164
unsigned flags
Definition: isom.h:95
int bitrates_count
Definition: isom.h:248
int64_t size
Definition: isom.h:82
int export_xmp
Definition: isom.h:246
int seek_individually
Definition: isom.h:243
static double c[64]
unsigned int stps_count
Definition: isom.h:145
unsigned int chunk_count
Definition: isom.h:135
Stereoscopic video.
unsigned bps
Definition: movenc.c:1408
int64_t start
Definition: isom.h:126
unsigned meta_keys_count
Definition: isom.h:228
uint32_t palette[256]
Definition: isom.h:176
unsigned stsd_id
Definition: isom.h:92
unsigned int stts_count
Definition: isom.h:137
unsigned int sample_size
may contain value calculated from stsd or value from stsz atom
Definition: isom.h:151
uint8_t file_iv[20]
Definition: isom.h:258
enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
Compute codec id for 'lpcm' tag.
Definition: mov.c:1809
int64_t next_root_atom
offset of the next root atom
Definition: isom.h:244
int last_stsd_index
Definition: isom.h:191
unsigned int nb_chapter_tracks
Definition: isom.h:238
int time_scale
Definition: isom.h:221
void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id)
Definition: isom.c:470
Definition: isom.h:65
int pseudo_stream_id
-1 means demux all ids
Definition: isom.h:167
int ffindex
AVStream index.
Definition: isom.h:133
uint8_t ** extradata
extradata array (and size) for multiple stsd
Definition: isom.h:189
int use_absolute_path
Definition: isom.h:239
unsigned size
Definition: isom.h:94
int64_t duration_for_fps
Definition: isom.h:186
unsigned track_id
Definition: isom.h:119
int moov_retry
Definition: isom.h:249
int found_hdlr_mdta
'hdlr' atom with type 'mdta' has been found
Definition: isom.h:225
Definition: isom.h:59
int has_sidx
Definition: isom.h:204
Definition: isom.h:71