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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
30#include "libavutil/spherical.h"
31#include "libavutil/stereo3d.h"
32
33#include "avio.h"
34#include "internal.h"
35#include "dv.h"
36
37/* isom.c */
38extern const AVCodecTag ff_mp4_obj_type[];
39extern const AVCodecTag ff_codec_movvideo_tags[];
40extern const AVCodecTag ff_codec_movaudio_tags[];
41extern const AVCodecTag ff_codec_movsubtitle_tags[];
42
43int ff_mov_iso639_to_lang(const char lang[4], int mp4);
44int ff_mov_lang_to_iso639(unsigned code, char to[4]);
45
46struct AVAESCTR;
47
48/* the QuickTime file format is quite convoluted...
49 * it has lots of index tables, each indexing something in another one...
50 * Here we just use what is needed to read the chunks
51 */
52
53typedef struct MOVStts {
54 int count;
55 int duration;
56} MOVStts;
57
58typedef struct MOVStsc {
59 int first;
60 int count;
61 int id;
62} MOVStsc;
63
64typedef struct MOVElst {
65 int64_t duration;
66 int64_t time;
67 float rate;
68} MOVElst;
69
70typedef struct MOVDref {
71 uint32_t type;
72 char *path;
73 char *dir;
74 char volume[28];
75 char filename[64];
76 int16_t nlvl_to, nlvl_from;
77} MOVDref;
78
79typedef struct MOVAtom {
80 uint32_t type;
81 int64_t size; /* total size (excluding the size and type fields) */
82} MOVAtom;
83
84struct MOVParseTableEntry;
85
86typedef struct MOVFragment {
87 unsigned track_id;
88 uint64_t base_data_offset;
89 uint64_t moof_offset;
90 uint64_t implicit_offset;
91 unsigned stsd_id;
92 unsigned duration;
93 unsigned size;
94 unsigned flags;
95 int64_t time;
96} MOVFragment;
97
98typedef struct MOVTrackExt {
99 unsigned track_id;
100 unsigned stsd_id;
101 unsigned duration;
102 unsigned size;
103 unsigned flags;
104} MOVTrackExt;
105
106typedef struct MOVSbgp {
107 unsigned int count;
108 unsigned int index;
109} MOVSbgp;
110
111typedef struct MOVFragmentIndexItem {
112 int64_t moof_offset;
113 int64_t time;
114 int headers_read;
115} MOVFragmentIndexItem;
116
117typedef struct MOVFragmentIndex {
118 unsigned track_id;
119 unsigned item_count;
120 unsigned current_item;
121 MOVFragmentIndexItem *items;
122} MOVFragmentIndex;
123
124typedef struct MOVIndexRange {
125 int64_t start;
126 int64_t end;
127} MOVIndexRange;
128
129typedef struct MOVStreamContext {
130 AVIOContext *pb;
131 int pb_is_copied;
132 int ffindex; ///< AVStream index
133 int next_chunk;
134 unsigned int chunk_count;
135 int64_t *chunk_offsets;
136 unsigned int stts_count;
137 MOVStts *stts_data;
138 unsigned int ctts_count;
139 MOVStts *ctts_data;
140 unsigned int stsc_count;
141 MOVStsc *stsc_data;
142 int stsc_index;
143 int stsc_sample;
144 unsigned int stps_count;
145 unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
146 MOVElst *elst_data;
147 unsigned int elst_count;
148 int ctts_index;
149 int ctts_sample;
150 unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
151 unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
152 unsigned int sample_count;
153 int *sample_sizes;
154 int keyframe_absent;
155 unsigned int keyframe_count;
156 int *keyframes;
157 int time_scale;
158 int64_t time_offset; ///< time offset of the edit list entries
159 int current_sample;
160 int64_t current_index;
161 MOVIndexRange* index_ranges;
162 MOVIndexRange* current_index_range;
163 unsigned int bytes_per_frame;
164 unsigned int samples_per_frame;
165 int dv_audio_container;
166 int pseudo_stream_id; ///< -1 means demux all ids
167 int16_t audio_cid; ///< stsd audio compression id
168 unsigned drefs_count;
169 MOVDref *drefs;
170 int dref_id;
171 int timecode_track;
172 int width; ///< tkhd width
173 int height; ///< tkhd height
174 int dts_shift; ///< dts shift when ctts is negative
175 uint32_t palette[256];
176 int has_palette;
177 int64_t data_size;
178 uint32_t tmcd_flags; ///< tmcd track flags
179 int64_t track_end; ///< used for dts generation in fragmented movie files
180 int start_pad; ///< amount of samples to skip due to enc-dec delay
181 unsigned int rap_group_count;
182 MOVSbgp *rap_group;
183
184 int nb_frames_for_fps;
185 int64_t duration_for_fps;
186
187 /** extradata array (and size) for multiple stsd */
188 uint8_t **extradata;
189 int *extradata_size;
190 int last_stsd_index;
191 int stsd_count;
192
193 int32_t *display_matrix;
194 AVStereo3D *stereo3d;
195 AVSphericalMapping *spherical;
196 size_t spherical_size;
197
198 uint32_t format;
199
200 int has_sidx; // If there is an sidx entry for this stream.
201 struct {
202 int use_subsamples;
203 uint8_t* auxiliary_info;
204 uint8_t* auxiliary_info_end;
205 uint8_t* auxiliary_info_pos;
206 uint8_t auxiliary_info_default_size;
207 uint8_t* auxiliary_info_sizes;
208 size_t auxiliary_info_sizes_count;
209 int64_t auxiliary_info_index;
210 struct AVAESCTR* aes_ctr;
211 } cenc;
212} MOVStreamContext;
213
214typedef struct MOVContext {
215 const AVClass *class; ///< class for private options
216 AVFormatContext *fc;
217 int time_scale;
218 int64_t duration; ///< duration of the longest track
219 int found_moov; ///< 'moov' atom has been found
220 int found_mdat; ///< 'mdat' atom has been found
221 int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found
222 int trak_index; ///< Index of the current 'trak'
223 char **meta_keys;
224 unsigned meta_keys_count;
225 DVDemuxContext *dv_demux;
226 AVFormatContext *dv_fctx;
227 int isom; ///< 1 if file is ISO Media (mp4/3gp)
228 MOVFragment fragment; ///< current fragment in moof atom
229 MOVTrackExt *trex_data;
230 unsigned trex_count;
231 int itunes_metadata; ///< metadata are itunes style
232 int handbrake_version;
233 int *chapter_tracks;
234 unsigned int nb_chapter_tracks;
235 int use_absolute_path;
236 int ignore_editlist;
237 int advanced_editlist;
238 int ignore_chapters;
239 int seek_individually;
240 int64_t next_root_atom; ///< offset of the next root atom
241 int export_all;
242 int export_xmp;
243 int *bitrates; ///< bitrates read before streams creation
244 int bitrates_count;
245 int moov_retry;
246 int use_mfra_for;
247 int has_looked_for_mfra;
248 MOVFragmentIndex** fragment_index_data;
249 unsigned fragment_index_count;
250 int fragment_index_complete;
251 int atom_depth;
252 unsigned int aax_mode; ///< 'aax' file has been detected
253 uint8_t file_key[20];
254 uint8_t file_iv[20];
255 void *activation_bytes;
256 int activation_bytes_size;
257 void *audible_fixed_key;
258 int audible_fixed_key_size;
259 struct AVAES *aes_decrypt;
260 uint8_t *decryption_key;
261 int decryption_key_len;
262 int enable_drefs;
263 int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
264} MOVContext;
265
266int ff_mp4_read_descr_len(AVIOContext *pb);
267int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
268int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
269void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
270
271#define MP4ODescrTag 0x01
272#define MP4IODescrTag 0x02
273#define MP4ESDescrTag 0x03
274#define MP4DecConfigDescrTag 0x04
275#define MP4DecSpecificDescrTag 0x05
276#define MP4SLDescrTag 0x06
277
278#define MOV_TFHD_BASE_DATA_OFFSET 0x01
279#define MOV_TFHD_STSD_ID 0x02
280#define MOV_TFHD_DEFAULT_DURATION 0x08
281#define MOV_TFHD_DEFAULT_SIZE 0x10
282#define MOV_TFHD_DEFAULT_FLAGS 0x20
283#define MOV_TFHD_DURATION_IS_EMPTY 0x010000
284#define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
285
286#define MOV_TRUN_DATA_OFFSET 0x01
287#define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
288#define MOV_TRUN_SAMPLE_DURATION 0x100
289#define MOV_TRUN_SAMPLE_SIZE 0x200
290#define MOV_TRUN_SAMPLE_FLAGS 0x400
291#define MOV_TRUN_SAMPLE_CTS 0x800
292
293#define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
294#define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
295#define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
296#define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
297#define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
298#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
299
300#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
301#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
302
303#define MOV_TKHD_FLAG_ENABLED 0x0001
304#define MOV_TKHD_FLAG_IN_MOVIE 0x0002
305#define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
306#define MOV_TKHD_FLAG_IN_POSTER 0x0008
307
308#define TAG_IS_AVCI(tag) \
309 ((tag) == MKTAG('a', 'i', '5', 'p') || \
310 (tag) == MKTAG('a', 'i', '5', 'q') || \
311 (tag) == MKTAG('a', 'i', '5', '2') || \
312 (tag) == MKTAG('a', 'i', '5', '3') || \
313 (tag) == MKTAG('a', 'i', '5', '5') || \
314 (tag) == MKTAG('a', 'i', '5', '6') || \
315 (tag) == MKTAG('a', 'i', '1', 'p') || \
316 (tag) == MKTAG('a', 'i', '1', 'q') || \
317 (tag) == MKTAG('a', 'i', '1', '2') || \
318 (tag) == MKTAG('a', 'i', '1', '3') || \
319 (tag) == MKTAG('a', 'i', '1', '5') || \
320 (tag) == MKTAG('a', 'i', '1', '6') || \
321 (tag) == MKTAG('a', 'i', 'v', 'x') || \
322 (tag) == MKTAG('A', 'V', 'i', 'n'))
323
324
325int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb);
326enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags);
327
328int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
329void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
330
331#define FF_MOV_FLAG_MFRA_AUTO -1
332#define FF_MOV_FLAG_MFRA_DTS 1
333#define FF_MOV_FLAG_MFRA_PTS 2
334
335#endif /* AVFORMAT_ISOM_H */
336
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