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>
7 * This file is part of FFmpeg.
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.
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.
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
24 #ifndef AVFORMAT_ISOM_H
25 #define AVFORMAT_ISOM_H
30 #include "libavutil/encryption_info.h"
31 #include "libavutil/mastering_display_metadata.h"
32 #include "libavutil/spherical.h"
33 #include "libavutil/stereo3d.h"
40 extern const AVCodecTag ff_mp4_obj_type[];
41 extern const AVCodecTag ff_codec_movvideo_tags[];
42 extern const AVCodecTag ff_codec_movaudio_tags[];
43 extern const AVCodecTag ff_codec_movsubtitle_tags[];
45 int ff_mov_iso639_to_lang(const char lang[4], int mp4);
46 int ff_mov_lang_to_iso639(unsigned code, char to[4]);
50 /* the QuickTime file format is quite convoluted...
51 * it has lots of index tables, each indexing something in another one...
52 * Here we just use what is needed to read the chunks
55 typedef struct MOVStts {
60 typedef struct MOVStsc {
66 typedef struct MOVElst {
72 typedef struct MOVDref {
78 int16_t nlvl_to, nlvl_from;
81 typedef struct MOVAtom {
83 int64_t size; /* total size (excluding the size and type fields) */
86 struct MOVParseTableEntry;
88 typedef struct MOVFragment {
90 uint64_t base_data_offset;
92 uint64_t implicit_offset;
99 typedef struct MOVTrackExt {
107 typedef struct MOVSbgp {
112 typedef struct MOVEncryptionIndex {
113 // Individual encrypted samples. If there are no elements, then the default
114 // settings will be used.
115 unsigned int nb_encrypted_samples;
116 AVEncryptionInfo **encrypted_samples;
118 uint8_t* auxiliary_info_sizes;
119 size_t auxiliary_info_sample_count;
120 uint8_t auxiliary_info_default_size;
121 uint64_t* auxiliary_offsets; ///< Absolute seek position
122 size_t auxiliary_offsets_count;
123 } MOVEncryptionIndex;
125 typedef struct MOVFragmentStreamInfo {
128 int64_t first_tfra_pts;
131 MOVEncryptionIndex *encryption_index;
132 } MOVFragmentStreamInfo;
134 typedef struct MOVFragmentIndexItem {
139 MOVFragmentStreamInfo * stream_info;
140 } MOVFragmentIndexItem;
142 typedef struct MOVFragmentIndex {
147 MOVFragmentIndexItem * item;
150 typedef struct MOVIndexRange {
155 typedef struct MOVStreamContext {
158 int ffindex; ///< AVStream index
160 unsigned int chunk_count;
161 int64_t *chunk_offsets;
162 unsigned int stts_count;
164 unsigned int ctts_count;
165 unsigned int ctts_allocated_size;
167 unsigned int stsc_count;
169 unsigned int stsc_index;
171 unsigned int stps_count;
172 unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
174 unsigned int elst_count;
177 unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
178 unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
179 unsigned int sample_count;
182 unsigned int keyframe_count;
185 int64_t time_offset; ///< time offset of the edit list entries
186 int64_t min_corrected_pts; ///< minimum Composition time shown by the edits excluding empty edits.
188 int64_t current_index;
189 MOVIndexRange* index_ranges;
190 MOVIndexRange* current_index_range;
191 unsigned int bytes_per_frame;
192 unsigned int samples_per_frame;
193 int dv_audio_container;
194 int pseudo_stream_id; ///< -1 means demux all ids
195 int16_t audio_cid; ///< stsd audio compression id
196 unsigned drefs_count;
200 int width; ///< tkhd width
201 int height; ///< tkhd height
202 int dts_shift; ///< dts shift when ctts is negative
203 uint32_t palette[256];
206 uint32_t tmcd_flags; ///< tmcd track flags
207 int64_t track_end; ///< used for dts generation in fragmented movie files
208 int start_pad; ///< amount of samples to skip due to enc-dec delay
209 unsigned int rap_group_count;
212 int nb_frames_for_fps;
213 int64_t duration_for_fps;
215 /** extradata array (and size) for multiple stsd */
221 int32_t *display_matrix;
222 AVStereo3D *stereo3d;
223 AVSphericalMapping *spherical;
224 size_t spherical_size;
225 AVMasteringDisplayMetadata *mastering;
226 AVContentLightMetadata *coll;
231 int has_sidx; // If there is an sidx entry for this stream.
233 struct AVAESCTR* aes_ctr;
234 unsigned int per_sample_iv_size; // Either 0, 8, or 16.
235 AVEncryptionInfo *default_encrypted_sample;
236 MOVEncryptionIndex *encryption_index;
240 typedef struct MOVContext {
241 const AVClass *class; ///< class for private options
244 int64_t duration; ///< duration of the longest track
245 int found_moov; ///< 'moov' atom has been found
246 int found_mdat; ///< 'mdat' atom has been found
247 int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found
248 int trak_index; ///< Index of the current 'trak'
250 unsigned meta_keys_count;
251 DVDemuxContext *dv_demux;
252 AVFormatContext *dv_fctx;
253 int isom; ///< 1 if file is ISO Media (mp4/3gp)
254 MOVFragment fragment; ///< current fragment in moof atom
255 MOVTrackExt *trex_data;
257 int itunes_metadata; ///< metadata are itunes style
258 int handbrake_version;
260 unsigned int nb_chapter_tracks;
261 int use_absolute_path;
263 int advanced_editlist;
265 int seek_individually;
266 int64_t next_root_atom; ///< offset of the next root atom
269 int *bitrates; ///< bitrates read before streams creation
273 int has_looked_for_mfra;
274 MOVFragmentIndex frag_index;
276 unsigned int aax_mode; ///< 'aax' file has been detected
277 uint8_t file_key[20];
279 void *activation_bytes;
280 int activation_bytes_size;
281 void *audible_fixed_key;
282 int audible_fixed_key_size;
283 struct AVAES *aes_decrypt;
284 uint8_t *decryption_key;
285 int decryption_key_len;
287 int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
290 int ff_mp4_read_descr_len(AVIOContext *pb);
291 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
292 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
293 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
295 #define MP4ODescrTag 0x01
296 #define MP4IODescrTag 0x02
297 #define MP4ESDescrTag 0x03
298 #define MP4DecConfigDescrTag 0x04
299 #define MP4DecSpecificDescrTag 0x05
300 #define MP4SLDescrTag 0x06
302 #define MOV_TFHD_BASE_DATA_OFFSET 0x01
303 #define MOV_TFHD_STSD_ID 0x02
304 #define MOV_TFHD_DEFAULT_DURATION 0x08
305 #define MOV_TFHD_DEFAULT_SIZE 0x10
306 #define MOV_TFHD_DEFAULT_FLAGS 0x20
307 #define MOV_TFHD_DURATION_IS_EMPTY 0x010000
308 #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
310 #define MOV_TRUN_DATA_OFFSET 0x01
311 #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
312 #define MOV_TRUN_SAMPLE_DURATION 0x100
313 #define MOV_TRUN_SAMPLE_SIZE 0x200
314 #define MOV_TRUN_SAMPLE_FLAGS 0x400
315 #define MOV_TRUN_SAMPLE_CTS 0x800
317 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
318 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
319 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
320 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
321 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
322 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
324 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
325 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
327 #define MOV_TKHD_FLAG_ENABLED 0x0001
328 #define MOV_TKHD_FLAG_IN_MOVIE 0x0002
329 #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
330 #define MOV_TKHD_FLAG_IN_POSTER 0x0008
332 #define MOV_SAMPLE_DEPENDENCY_UNKNOWN 0x0
333 #define MOV_SAMPLE_DEPENDENCY_YES 0x1
334 #define MOV_SAMPLE_DEPENDENCY_NO 0x2
337 #define TAG_IS_AVCI(tag) \
338 ((tag) == MKTAG('a', 'i', '5', 'p') || \
339 (tag) == MKTAG('a', 'i', '5', 'q') || \
340 (tag) == MKTAG('a', 'i', '5', '2') || \
341 (tag) == MKTAG('a', 'i', '5', '3') || \
342 (tag) == MKTAG('a', 'i', '5', '5') || \
343 (tag) == MKTAG('a', 'i', '5', '6') || \
344 (tag) == MKTAG('a', 'i', '1', 'p') || \
345 (tag) == MKTAG('a', 'i', '1', 'q') || \
346 (tag) == MKTAG('a', 'i', '1', '2') || \
347 (tag) == MKTAG('a', 'i', '1', '3') || \
348 (tag) == MKTAG('a', 'i', '1', '5') || \
349 (tag) == MKTAG('a', 'i', '1', '6') || \
350 (tag) == MKTAG('a', 'i', 'v', 'x') || \
351 (tag) == MKTAG('A', 'V', 'i', 'n'))
354 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb);
356 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
357 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
359 #define FF_MOV_FLAG_MFRA_AUTO -1
360 #define FF_MOV_FLAG_MFRA_DTS 1
361 #define FF_MOV_FLAG_MFRA_PTS 2
364 * Compute codec id for 'lpcm' tag.
365 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
367 static inline enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
374 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
377 #endif /* AVFORMAT_ISOM_H */