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;
98 typedef struct MOVTrackExt {
106 typedef struct MOVSbgp {
111 typedef struct MOVFragmentStreamInfo {
114 int64_t first_tfra_pts;
117 } MOVFragmentStreamInfo;
119 typedef struct MOVFragmentIndexItem {
124 MOVFragmentStreamInfo * stream_info;
125 } MOVFragmentIndexItem;
127 typedef struct MOVFragmentIndex {
132 MOVFragmentIndexItem * item;
135 typedef struct MOVIndexRange {
140 typedef struct MOVStreamContext {
143 int ffindex; ///< AVStream index
145 unsigned int chunk_count;
146 int64_t *chunk_offsets;
147 unsigned int stts_count;
149 unsigned int ctts_count;
150 unsigned int ctts_allocated_size;
152 unsigned int stsc_count;
154 unsigned int stsc_index;
156 unsigned int stps_count;
157 unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
159 unsigned int elst_count;
162 unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
163 unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
164 unsigned int sample_count;
167 unsigned int keyframe_count;
170 int64_t time_offset; ///< time offset of the edit list entries
171 int64_t min_corrected_pts; ///< minimum Composition time shown by the edits excluding empty edits.
173 int64_t current_index;
174 MOVIndexRange* index_ranges;
175 MOVIndexRange* current_index_range;
176 unsigned int bytes_per_frame;
177 unsigned int samples_per_frame;
178 int dv_audio_container;
179 int pseudo_stream_id; ///< -1 means demux all ids
180 int16_t audio_cid; ///< stsd audio compression id
181 unsigned drefs_count;
185 int width; ///< tkhd width
186 int height; ///< tkhd height
187 int dts_shift; ///< dts shift when ctts is negative
188 uint32_t palette[256];
191 uint32_t tmcd_flags; ///< tmcd track flags
192 int64_t track_end; ///< used for dts generation in fragmented movie files
193 int start_pad; ///< amount of samples to skip due to enc-dec delay
194 unsigned int rap_group_count;
197 int nb_frames_for_fps;
198 int64_t duration_for_fps;
200 /** extradata array (and size) for multiple stsd */
206 int32_t *display_matrix;
207 AVStereo3D *stereo3d;
208 AVSphericalMapping *spherical;
209 size_t spherical_size;
210 AVMasteringDisplayMetadata *mastering;
211 AVContentLightMetadata *coll;
216 int has_sidx; // If there is an sidx entry for this stream.
219 uint8_t* auxiliary_info;
220 uint8_t* auxiliary_info_end;
221 uint8_t* auxiliary_info_pos;
222 uint8_t auxiliary_info_default_size;
223 uint8_t* auxiliary_info_sizes;
224 size_t auxiliary_info_sizes_count;
225 int64_t auxiliary_info_index;
226 struct AVAESCTR* aes_ctr;
230 typedef struct MOVContext {
231 const AVClass *class; ///< class for private options
234 int64_t duration; ///< duration of the longest track
235 int found_moov; ///< 'moov' atom has been found
236 int found_mdat; ///< 'mdat' atom has been found
237 int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found
238 int trak_index; ///< Index of the current 'trak'
240 unsigned meta_keys_count;
241 DVDemuxContext *dv_demux;
242 AVFormatContext *dv_fctx;
243 int isom; ///< 1 if file is ISO Media (mp4/3gp)
244 MOVFragment fragment; ///< current fragment in moof atom
245 MOVTrackExt *trex_data;
247 int itunes_metadata; ///< metadata are itunes style
248 int handbrake_version;
250 unsigned int nb_chapter_tracks;
251 int use_absolute_path;
253 int advanced_editlist;
255 int seek_individually;
256 int64_t next_root_atom; ///< offset of the next root atom
259 int *bitrates; ///< bitrates read before streams creation
263 int has_looked_for_mfra;
264 MOVFragmentIndex frag_index;
266 unsigned int aax_mode; ///< 'aax' file has been detected
267 uint8_t file_key[20];
269 void *activation_bytes;
270 int activation_bytes_size;
271 void *audible_fixed_key;
272 int audible_fixed_key_size;
273 struct AVAES *aes_decrypt;
274 uint8_t *decryption_key;
275 int decryption_key_len;
277 int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
280 int ff_mp4_read_descr_len(AVIOContext *pb);
281 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
282 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
283 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
285 #define MP4ODescrTag 0x01
286 #define MP4IODescrTag 0x02
287 #define MP4ESDescrTag 0x03
288 #define MP4DecConfigDescrTag 0x04
289 #define MP4DecSpecificDescrTag 0x05
290 #define MP4SLDescrTag 0x06
292 #define MOV_TFHD_BASE_DATA_OFFSET 0x01
293 #define MOV_TFHD_STSD_ID 0x02
294 #define MOV_TFHD_DEFAULT_DURATION 0x08
295 #define MOV_TFHD_DEFAULT_SIZE 0x10
296 #define MOV_TFHD_DEFAULT_FLAGS 0x20
297 #define MOV_TFHD_DURATION_IS_EMPTY 0x010000
298 #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
300 #define MOV_TRUN_DATA_OFFSET 0x01
301 #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
302 #define MOV_TRUN_SAMPLE_DURATION 0x100
303 #define MOV_TRUN_SAMPLE_SIZE 0x200
304 #define MOV_TRUN_SAMPLE_FLAGS 0x400
305 #define MOV_TRUN_SAMPLE_CTS 0x800
307 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
308 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
309 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
310 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
311 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
312 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
314 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
315 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
317 #define MOV_TKHD_FLAG_ENABLED 0x0001
318 #define MOV_TKHD_FLAG_IN_MOVIE 0x0002
319 #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
320 #define MOV_TKHD_FLAG_IN_POSTER 0x0008
322 #define MOV_SAMPLE_DEPENDENCY_UNKNOWN 0x0
323 #define MOV_SAMPLE_DEPENDENCY_YES 0x1
324 #define MOV_SAMPLE_DEPENDENCY_NO 0x2
327 #define TAG_IS_AVCI(tag) \
328 ((tag) == MKTAG('a', 'i', '5', 'p') || \
329 (tag) == MKTAG('a', 'i', '5', 'q') || \
330 (tag) == MKTAG('a', 'i', '5', '2') || \
331 (tag) == MKTAG('a', 'i', '5', '3') || \
332 (tag) == MKTAG('a', 'i', '5', '5') || \
333 (tag) == MKTAG('a', 'i', '5', '6') || \
334 (tag) == MKTAG('a', 'i', '1', 'p') || \
335 (tag) == MKTAG('a', 'i', '1', 'q') || \
336 (tag) == MKTAG('a', 'i', '1', '2') || \
337 (tag) == MKTAG('a', 'i', '1', '3') || \
338 (tag) == MKTAG('a', 'i', '1', '5') || \
339 (tag) == MKTAG('a', 'i', '1', '6') || \
340 (tag) == MKTAG('a', 'i', 'v', 'x') || \
341 (tag) == MKTAG('A', 'V', 'i', 'n'))
344 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb);
346 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
347 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
349 #define FF_MOV_FLAG_MFRA_AUTO -1
350 #define FF_MOV_FLAG_MFRA_DTS 1
351 #define FF_MOV_FLAG_MFRA_PTS 2
354 * Compute codec id for 'lpcm' tag.
355 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
357 static inline enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
364 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
367 #endif /* AVFORMAT_ISOM_H */