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
27 #include "libavutil/spherical.h"
28 #include "libavutil/stereo3d.h"
35 extern const AVCodecTag ff_mp4_obj_type[];
36 extern const AVCodecTag ff_codec_movvideo_tags[];
37 extern const AVCodecTag ff_codec_movaudio_tags[];
38 extern const AVCodecTag ff_codec_movsubtitle_tags[];
40 int ff_mov_iso639_to_lang(const char lang[4], int mp4);
41 int ff_mov_lang_to_iso639(unsigned code, char to[4]);
45 /* the QuickTime file format is quite convoluted...
46 * it has lots of index tables, each indexing something in another one...
47 * Here we just use what is needed to read the chunks
50 typedef struct MOVStts {
55 typedef struct MOVStsc {
61 typedef struct MOVElst {
67 typedef struct MOVDref {
73 int16_t nlvl_to, nlvl_from;
76 typedef struct MOVAtom {
78 int64_t size; /* total size (excluding the size and type fields) */
81 struct MOVParseTableEntry;
83 typedef struct MOVFragment {
85 uint64_t base_data_offset;
87 uint64_t implicit_offset;
95 typedef struct MOVTrackExt {
103 typedef struct MOVSbgp {
108 typedef struct MOVFragmentIndexItem {
112 } MOVFragmentIndexItem;
114 typedef struct MOVFragmentIndex {
117 unsigned current_item;
118 MOVFragmentIndexItem *items;
121 typedef struct MOVStreamContext {
124 int ffindex; ///< AVStream index
126 unsigned int chunk_count;
127 int64_t *chunk_offsets;
128 unsigned int stts_count;
130 unsigned int ctts_count;
132 unsigned int stsc_count;
136 unsigned int stps_count;
137 unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
139 unsigned int elst_count;
142 unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
143 unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
144 unsigned int sample_count;
147 unsigned int keyframe_count;
150 int64_t time_offset; ///< time offset of the edit list entries
152 unsigned int bytes_per_frame;
153 unsigned int samples_per_frame;
154 int dv_audio_container;
155 int pseudo_stream_id; ///< -1 means demux all ids
156 int16_t audio_cid; ///< stsd audio compression id
157 unsigned drefs_count;
161 int width; ///< tkhd width
162 int height; ///< tkhd height
163 int dts_shift; ///< dts shift when ctts is negative
164 uint32_t palette[256];
167 uint32_t tmcd_flags; ///< tmcd track flags
168 int64_t track_end; ///< used for dts generation in fragmented movie files
169 int start_pad; ///< amount of samples to skip due to enc-dec delay
170 unsigned int rap_group_count;
173 int nb_frames_for_fps;
174 int64_t duration_for_fps;
176 /** extradata array (and size) for multiple stsd */
182 int32_t *display_matrix;
183 AVStereo3D *stereo3d;
184 AVSphericalMapping *spherical;
185 size_t spherical_size;
189 int has_sidx; // If there is an sidx entry for this stream.
192 uint8_t* auxiliary_info;
193 uint8_t* auxiliary_info_end;
194 uint8_t* auxiliary_info_pos;
195 uint8_t auxiliary_info_default_size;
196 uint8_t* auxiliary_info_sizes;
197 size_t auxiliary_info_sizes_count;
198 struct AVAESCTR* aes_ctr;
202 typedef struct MOVContext {
203 const AVClass *class; ///< class for private options
206 int64_t duration; ///< duration of the longest track
207 int found_moov; ///< 'moov' atom has been found
208 int found_mdat; ///< 'mdat' atom has been found
209 int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found
210 int trak_index; ///< Index of the current 'trak'
212 unsigned meta_keys_count;
213 DVDemuxContext *dv_demux;
214 AVFormatContext *dv_fctx;
215 int isom; ///< 1 if file is ISO Media (mp4/3gp)
216 MOVFragment fragment; ///< current fragment in moof atom
217 MOVTrackExt *trex_data;
219 int itunes_metadata; ///< metadata are itunes style
220 int handbrake_version;
222 unsigned int nb_chapter_tracks;
223 int use_absolute_path;
226 int seek_individually;
227 int64_t next_root_atom; ///< offset of the next root atom
230 int *bitrates; ///< bitrates read before streams creation
234 int has_looked_for_mfra;
235 MOVFragmentIndex** fragment_index_data;
236 unsigned fragment_index_count;
237 int fragment_index_complete;
239 unsigned int aax_mode; ///< 'aax' file has been detected
240 uint8_t file_key[20];
242 void *activation_bytes;
243 int activation_bytes_size;
244 void *audible_fixed_key;
245 int audible_fixed_key_size;
246 struct AVAES *aes_decrypt;
247 uint8_t *decryption_key;
248 int decryption_key_len;
250 int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
253 int ff_mp4_read_descr_len(AVIOContext *pb);
254 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
255 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
256 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
258 #define MP4ODescrTag 0x01
259 #define MP4IODescrTag 0x02
260 #define MP4ESDescrTag 0x03
261 #define MP4DecConfigDescrTag 0x04
262 #define MP4DecSpecificDescrTag 0x05
263 #define MP4SLDescrTag 0x06
265 #define MOV_TFHD_BASE_DATA_OFFSET 0x01
266 #define MOV_TFHD_STSD_ID 0x02
267 #define MOV_TFHD_DEFAULT_DURATION 0x08
268 #define MOV_TFHD_DEFAULT_SIZE 0x10
269 #define MOV_TFHD_DEFAULT_FLAGS 0x20
270 #define MOV_TFHD_DURATION_IS_EMPTY 0x010000
271 #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
273 #define MOV_TRUN_DATA_OFFSET 0x01
274 #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
275 #define MOV_TRUN_SAMPLE_DURATION 0x100
276 #define MOV_TRUN_SAMPLE_SIZE 0x200
277 #define MOV_TRUN_SAMPLE_FLAGS 0x400
278 #define MOV_TRUN_SAMPLE_CTS 0x800
280 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
281 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
282 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
283 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
284 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
285 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
287 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
288 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
290 #define MOV_TKHD_FLAG_ENABLED 0x0001
291 #define MOV_TKHD_FLAG_IN_MOVIE 0x0002
292 #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
293 #define MOV_TKHD_FLAG_IN_POSTER 0x0008
295 #define TAG_IS_AVCI(tag) \
296 ((tag) == MKTAG('a', 'i', '5', 'p') || \
297 (tag) == MKTAG('a', 'i', '5', 'q') || \
298 (tag) == MKTAG('a', 'i', '5', '2') || \
299 (tag) == MKTAG('a', 'i', '5', '3') || \
300 (tag) == MKTAG('a', 'i', '5', '5') || \
301 (tag) == MKTAG('a', 'i', '5', '6') || \
302 (tag) == MKTAG('a', 'i', '1', 'p') || \
303 (tag) == MKTAG('a', 'i', '1', 'q') || \
304 (tag) == MKTAG('a', 'i', '1', '2') || \
305 (tag) == MKTAG('a', 'i', '1', '3') || \
306 (tag) == MKTAG('a', 'i', '1', '5') || \
307 (tag) == MKTAG('a', 'i', '1', '6') || \
308 (tag) == MKTAG('a', 'i', 'v', 'x') || \
309 (tag) == MKTAG('A', 'V', 'i', 'n'))
312 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb);
313 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags);
315 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
316 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
318 #define FF_MOV_FLAG_MFRA_AUTO -1
319 #define FF_MOV_FLAG_MFRA_DTS 1
320 #define FF_MOV_FLAG_MFRA_PTS 2
322 #endif /* AVFORMAT_ISOM_H */