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
32 extern const AVCodecTag ff_mp4_obj_type[];
33 extern const AVCodecTag ff_codec_movvideo_tags[];
34 extern const AVCodecTag ff_codec_movaudio_tags[];
35 extern const AVCodecTag ff_codec_movsubtitle_tags[];
37 int ff_mov_iso639_to_lang(const char lang[4], int mp4);
38 int ff_mov_lang_to_iso639(unsigned code, char to[4]);
40 /* the QuickTime file format is quite convoluted...
41 * it has lots of index tables, each indexing something in another one...
42 * Here we just use what is needed to read the chunks
45 typedef struct MOVStts {
50 typedef struct MOVStsc {
56 typedef struct MOVElst {
62 typedef struct MOVDref {
68 int16_t nlvl_to, nlvl_from;
71 typedef struct MOVAtom {
73 int64_t size; /* total size (excluding the size and type fields) */
76 struct MOVParseTableEntry;
78 typedef struct MOVFragment {
80 uint64_t base_data_offset;
82 uint64_t implicit_offset;
90 typedef struct MOVTrackExt {
98 typedef struct MOVSbgp {
103 typedef struct MOVFragmentIndexItem {
106 } MOVFragmentIndexItem;
108 typedef struct MOVFragmentIndex {
111 unsigned current_item;
112 MOVFragmentIndexItem *items;
115 typedef struct MOVStreamContext {
118 int ffindex; ///< AVStream index
120 unsigned int chunk_count;
121 int64_t *chunk_offsets;
122 unsigned int stts_count;
124 unsigned int ctts_count;
126 unsigned int stsc_count;
128 unsigned int stps_count;
129 unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
131 unsigned int elst_count;
134 unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
135 unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
136 unsigned int sample_count;
139 unsigned int keyframe_count;
142 int64_t time_offset; ///< time offset of the edit list entries
144 unsigned int bytes_per_frame;
145 unsigned int samples_per_frame;
146 int dv_audio_container;
147 int pseudo_stream_id; ///< -1 means demux all ids
148 int16_t audio_cid; ///< stsd audio compression id
149 unsigned drefs_count;
153 int wrong_dts; ///< dts are wrong due to huge ctts offset (iMovie files)
154 int width; ///< tkhd width
155 int height; ///< tkhd height
156 int dts_shift; ///< dts shift when ctts is negative
157 uint32_t palette[256];
160 uint32_t tmcd_flags; ///< tmcd track flags
161 int64_t track_end; ///< used for dts generation in fragmented movie files
162 int start_pad; ///< amount of samples to skip due to enc-dec delay
163 unsigned int rap_group_count;
166 int nb_frames_for_fps;
167 int64_t duration_for_fps;
169 int32_t *display_matrix;
172 typedef struct MOVContext {
173 const AVClass *class; ///< class for private options
176 int64_t duration; ///< duration of the longest track
177 int found_moov; ///< 'moov' atom has been found
178 int found_mdat; ///< 'mdat' atom has been found
179 DVDemuxContext *dv_demux;
180 AVFormatContext *dv_fctx;
181 int isom; ///< 1 if file is ISO Media (mp4/3gp)
182 MOVFragment fragment; ///< current fragment in moof atom
183 MOVTrackExt *trex_data;
185 int itunes_metadata; ///< metadata are itunes style
187 int use_absolute_path;
189 int seek_individually;
190 int64_t next_root_atom; ///< offset of the next root atom
193 int *bitrates; ///< bitrates read before streams creation
197 int has_looked_for_mfra;
198 MOVFragmentIndex** fragment_index_data;
199 unsigned fragment_index_count;
201 unsigned int aax_mode; ///< 'aax' file has been detected
202 uint8_t file_key[20];
204 void *activation_bytes;
205 int activation_bytes_size;
206 void *audible_fixed_key;
207 int audible_fixed_key_size;
208 struct AVAES *aes_decrypt;
211 int ff_mp4_read_descr_len(AVIOContext *pb);
212 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
213 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
214 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
216 #define MP4ODescrTag 0x01
217 #define MP4IODescrTag 0x02
218 #define MP4ESDescrTag 0x03
219 #define MP4DecConfigDescrTag 0x04
220 #define MP4DecSpecificDescrTag 0x05
221 #define MP4SLDescrTag 0x06
223 #define MOV_TFHD_BASE_DATA_OFFSET 0x01
224 #define MOV_TFHD_STSD_ID 0x02
225 #define MOV_TFHD_DEFAULT_DURATION 0x08
226 #define MOV_TFHD_DEFAULT_SIZE 0x10
227 #define MOV_TFHD_DEFAULT_FLAGS 0x20
228 #define MOV_TFHD_DURATION_IS_EMPTY 0x010000
229 #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
231 #define MOV_TRUN_DATA_OFFSET 0x01
232 #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
233 #define MOV_TRUN_SAMPLE_DURATION 0x100
234 #define MOV_TRUN_SAMPLE_SIZE 0x200
235 #define MOV_TRUN_SAMPLE_FLAGS 0x400
236 #define MOV_TRUN_SAMPLE_CTS 0x800
238 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
239 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
240 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
241 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
242 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
243 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
245 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
246 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
248 #define MOV_TKHD_FLAG_ENABLED 0x0001
249 #define MOV_TKHD_FLAG_IN_MOVIE 0x0002
250 #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
251 #define MOV_TKHD_FLAG_IN_POSTER 0x0008
253 #define TAG_IS_AVCI(tag) \
254 ((tag) == MKTAG('a', 'i', '5', 'p') || \
255 (tag) == MKTAG('a', 'i', '5', 'q') || \
256 (tag) == MKTAG('a', 'i', '5', '2') || \
257 (tag) == MKTAG('a', 'i', '5', '3') || \
258 (tag) == MKTAG('a', 'i', '5', '5') || \
259 (tag) == MKTAG('a', 'i', '5', '6') || \
260 (tag) == MKTAG('a', 'i', '1', 'p') || \
261 (tag) == MKTAG('a', 'i', '1', 'q') || \
262 (tag) == MKTAG('a', 'i', '1', '2') || \
263 (tag) == MKTAG('a', 'i', '1', '3') || \
264 (tag) == MKTAG('a', 'i', '1', '5') || \
265 (tag) == MKTAG('a', 'i', '1', '6') || \
266 (tag) == MKTAG('a', 'i', 'v', 'x') || \
267 (tag) == MKTAG('A', 'V', 'i', 'n'))
270 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb);
271 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags);
273 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
274 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
276 #define FF_MOV_FLAG_MFRA_AUTO -1
277 #define FF_MOV_FLAG_MFRA_DTS 1
278 #define FF_MOV_FLAG_MFRA_PTS 2
280 #endif /* AVFORMAT_ISOM_H */