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 {
107 } MOVFragmentIndexItem;
109 typedef struct MOVFragmentIndex {
112 unsigned current_item;
113 MOVFragmentIndexItem *items;
116 typedef struct MOVStreamContext {
119 int ffindex; ///< AVStream index
121 unsigned int chunk_count;
122 int64_t *chunk_offsets;
123 unsigned int stts_count;
125 unsigned int ctts_count;
127 unsigned int stsc_count;
129 unsigned int stps_count;
130 unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
132 unsigned int elst_count;
135 unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
136 unsigned int stsz_sample_size; ///< always contains sample size from stsz atom
137 unsigned int sample_count;
140 unsigned int keyframe_count;
143 int64_t time_offset; ///< time offset of the edit list entries
145 unsigned int bytes_per_frame;
146 unsigned int samples_per_frame;
147 int dv_audio_container;
148 int pseudo_stream_id; ///< -1 means demux all ids
149 int16_t audio_cid; ///< stsd audio compression id
150 unsigned drefs_count;
154 int wrong_dts; ///< dts are wrong due to huge ctts offset (iMovie files)
155 int width; ///< tkhd width
156 int height; ///< tkhd height
157 int dts_shift; ///< dts shift when ctts is negative
158 uint32_t palette[256];
161 uint32_t tmcd_flags; ///< tmcd track flags
162 int64_t track_end; ///< used for dts generation in fragmented movie files
163 int start_pad; ///< amount of samples to skip due to enc-dec delay
164 unsigned int rap_group_count;
167 int nb_frames_for_fps;
168 int64_t duration_for_fps;
170 int32_t *display_matrix;
173 typedef struct MOVContext {
174 const AVClass *class; ///< class for private options
177 int64_t duration; ///< duration of the longest track
178 int found_moov; ///< 'moov' atom has been found
179 int found_mdat; ///< 'mdat' atom has been found
180 int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found
182 unsigned meta_keys_count;
183 DVDemuxContext *dv_demux;
184 AVFormatContext *dv_fctx;
185 int isom; ///< 1 if file is ISO Media (mp4/3gp)
186 MOVFragment fragment; ///< current fragment in moof atom
187 MOVTrackExt *trex_data;
189 int itunes_metadata; ///< metadata are itunes style
191 int use_absolute_path;
193 int seek_individually;
194 int64_t next_root_atom; ///< offset of the next root atom
197 int *bitrates; ///< bitrates read before streams creation
201 int has_looked_for_mfra;
202 MOVFragmentIndex** fragment_index_data;
203 unsigned fragment_index_count;
204 int fragment_index_complete;
206 unsigned int aax_mode; ///< 'aax' file has been detected
207 uint8_t file_key[20];
209 void *activation_bytes;
210 int activation_bytes_size;
211 void *audible_fixed_key;
212 int audible_fixed_key_size;
213 struct AVAES *aes_decrypt;
216 int ff_mp4_read_descr_len(AVIOContext *pb);
217 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
218 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
219 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
221 #define MP4ODescrTag 0x01
222 #define MP4IODescrTag 0x02
223 #define MP4ESDescrTag 0x03
224 #define MP4DecConfigDescrTag 0x04
225 #define MP4DecSpecificDescrTag 0x05
226 #define MP4SLDescrTag 0x06
228 #define MOV_TFHD_BASE_DATA_OFFSET 0x01
229 #define MOV_TFHD_STSD_ID 0x02
230 #define MOV_TFHD_DEFAULT_DURATION 0x08
231 #define MOV_TFHD_DEFAULT_SIZE 0x10
232 #define MOV_TFHD_DEFAULT_FLAGS 0x20
233 #define MOV_TFHD_DURATION_IS_EMPTY 0x010000
234 #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
236 #define MOV_TRUN_DATA_OFFSET 0x01
237 #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
238 #define MOV_TRUN_SAMPLE_DURATION 0x100
239 #define MOV_TRUN_SAMPLE_SIZE 0x200
240 #define MOV_TRUN_SAMPLE_FLAGS 0x400
241 #define MOV_TRUN_SAMPLE_CTS 0x800
243 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
244 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
245 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
246 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
247 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
248 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
250 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
251 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
253 #define MOV_TKHD_FLAG_ENABLED 0x0001
254 #define MOV_TKHD_FLAG_IN_MOVIE 0x0002
255 #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
256 #define MOV_TKHD_FLAG_IN_POSTER 0x0008
258 #define TAG_IS_AVCI(tag) \
259 ((tag) == MKTAG('a', 'i', '5', 'p') || \
260 (tag) == MKTAG('a', 'i', '5', 'q') || \
261 (tag) == MKTAG('a', 'i', '5', '2') || \
262 (tag) == MKTAG('a', 'i', '5', '3') || \
263 (tag) == MKTAG('a', 'i', '5', '5') || \
264 (tag) == MKTAG('a', 'i', '5', '6') || \
265 (tag) == MKTAG('a', 'i', '1', 'p') || \
266 (tag) == MKTAG('a', 'i', '1', 'q') || \
267 (tag) == MKTAG('a', 'i', '1', '2') || \
268 (tag) == MKTAG('a', 'i', '1', '3') || \
269 (tag) == MKTAG('a', 'i', '1', '5') || \
270 (tag) == MKTAG('a', 'i', '1', '6') || \
271 (tag) == MKTAG('a', 'i', 'v', 'x') || \
272 (tag) == MKTAG('A', 'V', 'i', 'n'))
275 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb);
276 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags);
278 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
279 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
281 #define FF_MOV_FLAG_MFRA_AUTO -1
282 #define FF_MOV_FLAG_MFRA_DTS 1
283 #define FF_MOV_FLAG_MFRA_PTS 2
285 #endif /* AVFORMAT_ISOM_H */