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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 "avio.h"
28 #include "internal.h"
29 #include "dv.h"
30 
31 /* isom.c */
32 extern const AVCodecTag ff_mp4_obj_type[];
33 extern const AVCodecTag ff_codec_movvideo_tags[];
34 extern const AVCodecTag ff_codec_movaudio_tags[];
36 
37 int ff_mov_iso639_to_lang(const char lang[4], int mp4);
38 int ff_mov_lang_to_iso639(unsigned code, char to[4]);
39 
40 struct AVAESCTR;
41 
42 /* the QuickTime file format is quite convoluted...
43  * it has lots of index tables, each indexing something in another one...
44  * Here we just use what is needed to read the chunks
45  */
46 
47 typedef struct MOVStts {
48  int count;
49  int duration;
50 } MOVStts;
51 
52 typedef struct MOVStsc {
53  int first;
54  int count;
55  int id;
56 } MOVStsc;
57 
58 typedef struct MOVElst {
59  int64_t duration;
60  int64_t time;
61  float rate;
62 } MOVElst;
63 
64 typedef struct MOVDref {
65  uint32_t type;
66  char *path;
67  char *dir;
68  char volume[28];
69  char filename[64];
70  int16_t nlvl_to, nlvl_from;
71 } MOVDref;
72 
73 typedef struct MOVAtom {
74  uint32_t type;
75  int64_t size; /* total size (excluding the size and type fields) */
76 } MOVAtom;
77 
78 struct MOVParseTableEntry;
79 
80 typedef struct MOVFragment {
81  unsigned track_id;
82  uint64_t base_data_offset;
83  uint64_t moof_offset;
84  uint64_t implicit_offset;
85  unsigned stsd_id;
86  unsigned duration;
87  unsigned size;
88  unsigned flags;
89  int64_t time;
90 } MOVFragment;
91 
92 typedef struct MOVTrackExt {
93  unsigned track_id;
94  unsigned stsd_id;
95  unsigned duration;
96  unsigned size;
97  unsigned flags;
98 } MOVTrackExt;
99 
100 typedef struct MOVSbgp {
101  unsigned int count;
102  unsigned int index;
103 } MOVSbgp;
104 
105 typedef struct MOVFragmentIndexItem {
106  int64_t moof_offset;
107  int64_t time;
110 
111 typedef struct MOVFragmentIndex {
112  unsigned track_id;
113  unsigned item_count;
114  unsigned current_item;
117 
118 typedef struct MOVStreamContext {
121  int ffindex; ///< AVStream index
123  unsigned int chunk_count;
124  int64_t *chunk_offsets;
125  unsigned int stts_count;
127  unsigned int ctts_count;
129  unsigned int stsc_count;
133  unsigned int stps_count;
134  unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
136  unsigned int elst_count;
139  unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
140  unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
141  unsigned int sample_count;
144  unsigned int keyframe_count;
145  int *keyframes;
147  int64_t time_offset; ///< time offset of the edit list entries
149  unsigned int bytes_per_frame;
150  unsigned int samples_per_frame;
152  int pseudo_stream_id; ///< -1 means demux all ids
153  int16_t audio_cid; ///< stsd audio compression id
154  unsigned drefs_count;
156  int dref_id;
158  int width; ///< tkhd width
159  int height; ///< tkhd height
160  int dts_shift; ///< dts shift when ctts is negative
161  uint32_t palette[256];
163  int64_t data_size;
164  uint32_t tmcd_flags; ///< tmcd track flags
165  int64_t track_end; ///< used for dts generation in fragmented movie files
166  int start_pad; ///< amount of samples to skip due to enc-dec delay
167  unsigned int rap_group_count;
169 
172 
173  /** extradata array (and size) for multiple stsd */
178 
180  uint32_t format;
181 
182  struct {
190  struct AVAESCTR* aes_ctr;
191  } cenc;
193 
194 typedef struct MOVContext {
195  const AVClass *class; ///< class for private options
198  int64_t duration; ///< duration of the longest track
199  int found_moov; ///< 'moov' atom has been found
200  int found_mdat; ///< 'mdat' atom has been found
201  int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found
202  int trak_index; ///< Index of the current 'trak'
203  char **meta_keys;
204  unsigned meta_keys_count;
207  int isom; ///< 1 if file is ISO Media (mp4/3gp)
208  MOVFragment fragment; ///< current fragment in moof atom
210  unsigned trex_count;
211  int itunes_metadata; ///< metadata are itunes style
218  int64_t next_root_atom; ///< offset of the next root atom
221  int *bitrates; ///< bitrates read before streams creation
230  unsigned int aax_mode; ///< 'aax' file has been detected
241 } MOVContext;
242 
246 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
247 
248 #define MP4ODescrTag 0x01
249 #define MP4IODescrTag 0x02
250 #define MP4ESDescrTag 0x03
251 #define MP4DecConfigDescrTag 0x04
252 #define MP4DecSpecificDescrTag 0x05
253 #define MP4SLDescrTag 0x06
254 
255 #define MOV_TFHD_BASE_DATA_OFFSET 0x01
256 #define MOV_TFHD_STSD_ID 0x02
257 #define MOV_TFHD_DEFAULT_DURATION 0x08
258 #define MOV_TFHD_DEFAULT_SIZE 0x10
259 #define MOV_TFHD_DEFAULT_FLAGS 0x20
260 #define MOV_TFHD_DURATION_IS_EMPTY 0x010000
261 #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
262 
263 #define MOV_TRUN_DATA_OFFSET 0x01
264 #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
265 #define MOV_TRUN_SAMPLE_DURATION 0x100
266 #define MOV_TRUN_SAMPLE_SIZE 0x200
267 #define MOV_TRUN_SAMPLE_FLAGS 0x400
268 #define MOV_TRUN_SAMPLE_CTS 0x800
269 
270 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
271 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
272 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
273 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
274 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
275 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
276 
277 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
278 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
279 
280 #define MOV_TKHD_FLAG_ENABLED 0x0001
281 #define MOV_TKHD_FLAG_IN_MOVIE 0x0002
282 #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
283 #define MOV_TKHD_FLAG_IN_POSTER 0x0008
284 
285 #define TAG_IS_AVCI(tag) \
286  ((tag) == MKTAG('a', 'i', '5', 'p') || \
287  (tag) == MKTAG('a', 'i', '5', 'q') || \
288  (tag) == MKTAG('a', 'i', '5', '2') || \
289  (tag) == MKTAG('a', 'i', '5', '3') || \
290  (tag) == MKTAG('a', 'i', '5', '5') || \
291  (tag) == MKTAG('a', 'i', '5', '6') || \
292  (tag) == MKTAG('a', 'i', '1', 'p') || \
293  (tag) == MKTAG('a', 'i', '1', 'q') || \
294  (tag) == MKTAG('a', 'i', '1', '2') || \
295  (tag) == MKTAG('a', 'i', '1', '3') || \
296  (tag) == MKTAG('a', 'i', '1', '5') || \
297  (tag) == MKTAG('a', 'i', '1', '6') || \
298  (tag) == MKTAG('a', 'i', 'v', 'x') || \
299  (tag) == MKTAG('A', 'V', 'i', 'n'))
300 
301 
304 
305 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
306 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
307 
308 #define FF_MOV_FLAG_MFRA_AUTO -1
309 #define FF_MOV_FLAG_MFRA_DTS 1
310 #define FF_MOV_FLAG_MFRA_PTS 2
311 
312 #endif /* AVFORMAT_ISOM_H */
int chapter_track
Definition: isom.h:213
int itunes_metadata
metadata are itunes style
Definition: isom.h:211
int * bitrates
bitrates read before streams creation
Definition: isom.h:221
int64_t moof_offset
Definition: isom.h:106
Bytestream IO Context.
Definition: avio.h:147
Buffered I/O operations.
uint32_t tmcd_flags
tmcd track flags
Definition: isom.h:164
const AVCodecTag ff_mp4_obj_type[]
Definition: isom.c:34
uint8_t * auxiliary_info_end
Definition: isom.h:185
unsigned int rap_group_count
Definition: isom.h:167
unsigned int elst_count
Definition: isom.h:136
MOVTrackExt * trex_data
Definition: isom.h:209
int export_all
Definition: isom.h:219
unsigned track_id
Definition: isom.h:81
uint32_t format
Definition: isom.h:180
unsigned int samples_per_frame
Definition: isom.h:150
int dv_audio_container
Definition: isom.h:151
Definition: isom.h:47
float rate
Definition: isom.h:61
uint64_t base_data_offset
Definition: isom.h:82
int64_t duration
Definition: isom.h:59
unsigned int stsc_count
Definition: isom.h:129
int has_palette
Definition: isom.h:162
unsigned item_count
Definition: isom.h:113
uint8_t * decryption_key
Definition: isom.h:238
int ignore_chapters
Definition: isom.h:216
void * activation_bytes
Definition: isom.h:233
int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
Definition: isom.c:480
int16_t audio_cid
stsd audio compression id
Definition: isom.h:153
char ** meta_keys
Definition: isom.h:203
int height
tkhd height
Definition: isom.h:159
uint32_t type
Definition: isom.h:74
MOVElst * elst_data
Definition: isom.h:135
MOVStsc * stsc_data
Definition: isom.h:130
unsigned fragment_index_count
Definition: isom.h:227
int ctts_index
Definition: isom.h:137
unsigned stsd_id
Definition: isom.h:94
int found_moov
'moov' atom has been found
Definition: isom.h:199
unsigned flags
Definition: isom.h:97
int isom
1 if file is ISO Media (mp4/3gp)
Definition: isom.h:207
int found_mdat
'mdat' atom has been found
Definition: isom.h:200
int width
tkhd width
Definition: isom.h:158
unsigned drefs_count
Definition: isom.h:154
Format I/O context.
Definition: avformat.h:1330
const AVCodecTag ff_codec_movvideo_tags[]
Definition: isom.c:72
char filename[64]
Definition: isom.h:69
MOVDref * drefs
Definition: isom.h:155
int fragment_index_complete
Definition: isom.h:228
const AVCodecTag ff_codec_movaudio_tags[]
Definition: isom.c:296
uint8_t
int first
Definition: isom.h:53
uint8_t * auxiliary_info
Definition: isom.h:184
int ff_mp4_read_descr_len(AVIOContext *pb)
Definition: isom.c:433
unsigned int sample_count
Definition: isom.h:141
int count
Definition: isom.h:54
int dts_shift
dts shift when ctts is negative
Definition: isom.h:160
uint8_t * auxiliary_info_pos
Definition: isom.h:186
unsigned int count
Definition: isom.h:101
int16_t nlvl_to
Definition: isom.h:70
char volume[28]
Definition: isom.h:68
int stsd_count
Definition: isom.h:177
int activation_bytes_size
Definition: isom.h:234
MOVFragmentIndex ** fragment_index_data
Definition: isom.h:226
uint32_t tag
Definition: movenc.c:1378
int nb_frames_for_fps
Definition: isom.h:170
struct AVAESCTR * aes_ctr
Definition: isom.h:190
const AVCodecTag ff_codec_movsubtitle_tags[]
Definition: isom.c:351
int current_sample
Definition: isom.h:148
unsigned track_id
Definition: isom.h:93
const char * to
Definition: webvttdec.c:34
int64_t time_offset
time offset of the edit list entries
Definition: isom.h:147
unsigned int keyframe_count
Definition: isom.h:144
int * extradata_size
Definition: isom.h:175
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:191
unsigned int ctts_count
Definition: isom.h:127
int stsc_sample
Definition: isom.h:132
int atom_depth
Definition: isom.h:229
int * keyframes
Definition: isom.h:145
AVFormatContext * fc
Definition: isom.h:196
int handbrake_version
Definition: isom.h:212
int ctts_sample
Definition: isom.h:138
int keyframe_absent
Definition: isom.h:143
int16_t nlvl_from
Definition: isom.h:70
void * audible_fixed_key
Definition: isom.h:235
int use_subsamples
Definition: isom.h:183
int64_t time
Definition: isom.h:107
int stsc_index
Definition: isom.h:131
uint8_t file_key[20]
Definition: isom.h:231
struct AVAES * aes_decrypt
Definition: isom.h:237
static const uint16_t fc[]
Definition: dcaenc.h:41
uint8_t auxiliary_info_default_size
Definition: isom.h:187
char * dir
Definition: isom.h:67
int id
Definition: isom.h:55
int decryption_key_len
Definition: isom.h:239
int32_t
int audible_fixed_key_size
Definition: isom.h:236
char * path
Definition: isom.h:66
int time_scale
Definition: isom.h:146
int64_t time
Definition: isom.h:89
MOVFragmentIndexItem * items
Definition: isom.h:115
Definition: isom.h:100
uint64_t moof_offset
Definition: isom.h:83
MOVStts * ctts_data
Definition: isom.h:128
unsigned size
Definition: isom.h:96
void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
Definition: isom.c:602
int ignore_editlist
Definition: isom.h:215
int64_t * chunk_offsets
Definition: isom.h:124
unsigned int index
Definition: isom.h:102
int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb)
Definition: mov.c:742
unsigned current_item
Definition: isom.h:114
size_t auxiliary_info_sizes_count
Definition: isom.h:189
int64_t duration
duration of the longest track
Definition: isom.h:198
Stream structure.
Definition: avformat.h:881
unsigned duration
Definition: isom.h:95
DVDemuxContext * dv_demux
Definition: isom.h:205
int timecode_track
Definition: isom.h:157
int * sample_sizes
Definition: isom.h:142
unsigned duration
Definition: isom.h:86
MOVSbgp * rap_group
Definition: isom.h:168
int duration
Definition: isom.h:49
unsigned int stsz_sample_size
always contains sample size from stsz atom
Definition: isom.h:140
unsigned trex_count
Definition: isom.h:210
int enable_drefs
Definition: isom.h:240
int64_t data_size
Definition: isom.h:163
int has_looked_for_mfra
Definition: isom.h:225
uint32_t type
Definition: isom.h:65
MOVStts * stts_data
Definition: isom.h:126
Describe the class of an AVClass context structure.
Definition: log.h:67
int count
Definition: isom.h:48
unsigned int aax_mode
'aax' file has been detected
Definition: isom.h:230
MOVFragment fragment
current fragment in moof atom
Definition: isom.h:208
int64_t track_end
used for dts generation in fragmented movie files
Definition: isom.h:165
Definition: isom.h:73
int use_mfra_for
Definition: isom.h:224
int64_t time
Definition: isom.h:60
int pb_is_copied
Definition: isom.h:120
int ff_mov_lang_to_iso639(unsigned code, char to[4])
Definition: isom.c:411
int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
Definition: mov.c:2202
int next_chunk
Definition: isom.h:122
AVFormatContext * dv_fctx
Definition: isom.h:206
int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag)
Definition: isom.c:446
uint64_t implicit_offset
Definition: isom.h:84
static int flags
Definition: cpu.c:47
unsigned * stps_data
partial sync sample for mpeg-2 open gop
Definition: isom.h:134
uint8_t * auxiliary_info_sizes
Definition: isom.h:188
int ff_mov_iso639_to_lang(const char lang[4], int mp4)
Definition: isom.c:384
int start_pad
amount of samples to skip due to enc-dec delay
Definition: isom.h:166
int trak_index
Index of the current 'trak'.
Definition: isom.h:202
int32_t * display_matrix
Definition: isom.h:179
AVIOContext * pb
Definition: isom.h:119
unsigned int bytes_per_frame
Definition: isom.h:149
unsigned flags
Definition: isom.h:88
int bitrates_count
Definition: isom.h:222
int64_t size
Definition: isom.h:75
int export_xmp
Definition: isom.h:220
int seek_individually
Definition: isom.h:217
static double c[64]
unsigned int stps_count
Definition: isom.h:133
unsigned int chunk_count
Definition: isom.h:123
unsigned bps
Definition: movenc.c:1379
unsigned meta_keys_count
Definition: isom.h:204
uint32_t palette[256]
Definition: isom.h:161
unsigned stsd_id
Definition: isom.h:85
unsigned int stts_count
Definition: isom.h:125
unsigned int sample_size
may contain value calculated from stsd or value from stsz atom
Definition: isom.h:139
uint8_t file_iv[20]
Definition: isom.h:232
enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
Compute codec id for 'lpcm' tag.
Definition: mov.c:1757
int64_t next_root_atom
offset of the next root atom
Definition: isom.h:218
int last_stsd_index
Definition: isom.h:176
int time_scale
Definition: isom.h:197
void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id)
Definition: isom.c:455
Definition: isom.h:58
int pseudo_stream_id
-1 means demux all ids
Definition: isom.h:152
int ffindex
AVStream index.
Definition: isom.h:121
uint8_t ** extradata
extradata array (and size) for multiple stsd
Definition: isom.h:174
int use_absolute_path
Definition: isom.h:214
unsigned size
Definition: isom.h:87
int64_t duration_for_fps
Definition: isom.h:171
unsigned track_id
Definition: isom.h:112
int moov_retry
Definition: isom.h:223
struct MOVStreamContext::@206 cenc
int found_hdlr_mdta
'hdlr' atom with type 'mdta' has been found
Definition: isom.h:201
Definition: isom.h:52
Definition: isom.h:64