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/mastering_display_metadata.h"
31 #include "libavutil/spherical.h"
32 #include "libavutil/stereo3d.h"
39 extern const AVCodecTag ff_mp4_obj_type[];
40 extern const AVCodecTag ff_codec_movvideo_tags[];
41 extern const AVCodecTag ff_codec_movaudio_tags[];
42 extern const AVCodecTag ff_codec_movsubtitle_tags[];
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]);
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
54 typedef struct MOVStts {
59 typedef struct MOVStsc {
65 typedef struct MOVElst {
71 typedef struct MOVDref {
77 int16_t nlvl_to, nlvl_from;
80 typedef struct MOVAtom {
82 int64_t size; /* total size (excluding the size and type fields) */
85 struct MOVParseTableEntry;
87 typedef struct MOVFragment {
89 uint64_t base_data_offset;
91 uint64_t implicit_offset;
99 typedef struct MOVTrackExt {
107 typedef struct MOVSbgp {
112 typedef struct MOVFragmentIndexItem {
116 } MOVFragmentIndexItem;
118 typedef struct MOVFragmentIndex {
121 unsigned current_item;
122 MOVFragmentIndexItem *items;
125 typedef struct MOVIndexRange {
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;
159 int64_t time_offset; ///< time offset of the edit list entries
161 int64_t current_index;
162 MOVIndexRange* index_ranges;
163 MOVIndexRange* current_index_range;
164 unsigned int bytes_per_frame;
165 unsigned int samples_per_frame;
166 int dv_audio_container;
167 int pseudo_stream_id; ///< -1 means demux all ids
168 int16_t audio_cid; ///< stsd audio compression id
169 unsigned drefs_count;
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];
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;
185 int nb_frames_for_fps;
186 int64_t duration_for_fps;
188 /** extradata array (and size) for multiple stsd */
194 int32_t *display_matrix;
195 AVStereo3D *stereo3d;
196 AVSphericalMapping *spherical;
197 size_t spherical_size;
198 AVMasteringDisplayMetadata *mastering;
199 AVContentLightMetadata *coll;
204 int has_sidx; // If there is an sidx entry for this stream.
207 uint8_t* auxiliary_info;
208 uint8_t* auxiliary_info_end;
209 uint8_t* auxiliary_info_pos;
210 uint8_t auxiliary_info_default_size;
211 uint8_t* auxiliary_info_sizes;
212 size_t auxiliary_info_sizes_count;
213 int64_t auxiliary_info_index;
214 struct AVAESCTR* aes_ctr;
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'
228 unsigned meta_keys_count;
229 DVDemuxContext *dv_demux;
230 AVFormatContext *dv_fctx;
231 int isom; ///< 1 if file is ISO Media (mp4/3gp)
232 MOVFragment fragment; ///< current fragment in moof atom
233 MOVTrackExt *trex_data;
235 int itunes_metadata; ///< metadata are itunes style
236 int handbrake_version;
238 unsigned int nb_chapter_tracks;
239 int use_absolute_path;
241 int advanced_editlist;
243 int seek_individually;
244 int64_t next_root_atom; ///< offset of the next root atom
247 int *bitrates; ///< bitrates read before streams creation
251 int has_looked_for_mfra;
252 MOVFragmentIndex** fragment_index_data;
253 unsigned fragment_index_count;
254 int fragment_index_complete;
256 unsigned int aax_mode; ///< 'aax' file has been detected
257 uint8_t file_key[20];
259 void *activation_bytes;
260 int activation_bytes_size;
261 void *audible_fixed_key;
262 int audible_fixed_key_size;
263 struct AVAES *aes_decrypt;
264 uint8_t *decryption_key;
265 int decryption_key_len;
267 int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
270 int ff_mp4_read_descr_len(AVIOContext *pb);
271 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
272 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
273 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
275 #define MP4ODescrTag 0x01
276 #define MP4IODescrTag 0x02
277 #define MP4ESDescrTag 0x03
278 #define MP4DecConfigDescrTag 0x04
279 #define MP4DecSpecificDescrTag 0x05
280 #define MP4SLDescrTag 0x06
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
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
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
304 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
305 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
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
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'))
329 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb);
330 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags);
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);
335 #define FF_MOV_FLAG_MFRA_AUTO -1
336 #define FF_MOV_FLAG_MFRA_DTS 1
337 #define FF_MOV_FLAG_MFRA_PTS 2
339 #endif /* AVFORMAT_ISOM_H */