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 Libav.
9 * Libav 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 * Libav 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 Libav; 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/spherical.h"
31 #include "libavutil/stereo3d.h"
38 extern const AVCodecTag ff_mp4_obj_type[];
39 extern const AVCodecTag ff_codec_movvideo_tags[];
40 extern const AVCodecTag ff_codec_movaudio_tags[];
41 extern const AVCodecTag ff_codec_movsubtitle_tags[];
43 int ff_mov_iso639_to_lang(const char lang[4], int mp4);
44 int ff_mov_lang_to_iso639(unsigned code, char to[4]);
46 /* the QuickTime file format is quite convoluted...
47 * it has lots of index tables, each indexing something in another one...
48 * Here we just use what is needed to read the chunks
51 typedef struct MOVStts {
56 typedef struct MOVStsc {
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;
89 typedef struct MOVTrackExt {
97 typedef struct MOVSbgp {
102 typedef struct MOVStreamContext {
104 int ffindex; ///< AVStream index
106 unsigned int chunk_count;
107 int64_t *chunk_offsets;
108 unsigned int stts_count;
110 unsigned int ctts_count;
112 unsigned int stsc_count;
114 unsigned int stsc_index;
116 unsigned int stps_count;
117 unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
120 unsigned int sample_size;
121 unsigned int sample_count;
124 unsigned int keyframe_count;
127 int64_t time_offset; ///< time offset of the first edit list entry
129 unsigned int bytes_per_frame;
130 unsigned int samples_per_frame;
131 int dv_audio_container;
132 int pseudo_stream_id; ///< -1 means demux all ids
133 int16_t audio_cid; ///< stsd audio compression id
134 unsigned drefs_count;
137 int width; ///< tkhd width
138 int height; ///< tkhd height
139 int dts_shift; ///< dts shift when ctts is negative
140 uint32_t palette[256];
143 int64_t track_end; ///< used for dts generation in fragmented movie files
144 unsigned int rap_group_count;
147 /** extradata array (and size) for multiple stsd */
153 int32_t *display_matrix;
154 AVStereo3D *stereo3d;
155 AVSphericalMapping *spherical;
156 size_t spherical_size;
159 typedef struct MOVContext {
160 const AVClass *class; ///< class for private options
163 int64_t duration; ///< duration of the longest track
164 int found_moov; ///< 'moov' atom has been found
165 int found_mdat; ///< 'mdat' atom has been found
166 DVDemuxContext *dv_demux;
167 AVFormatContext *dv_fctx;
168 int isom; ///< 1 if file is ISO Media (mp4/3gp)
169 MOVFragment fragment; ///< current fragment in moof atom
170 MOVTrackExt *trex_data;
172 int itunes_metadata; ///< metadata are itunes style
174 int seek_individually;
175 int64_t next_root_atom; ///< offset of the next root atom
180 int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
183 int ff_mp4_read_descr_len(AVIOContext *pb);
184 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
185 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
186 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
188 #define MP4ODescrTag 0x01
189 #define MP4IODescrTag 0x02
190 #define MP4ESDescrTag 0x03
191 #define MP4DecConfigDescrTag 0x04
192 #define MP4DecSpecificDescrTag 0x05
193 #define MP4SLDescrTag 0x06
195 #define MOV_TFHD_BASE_DATA_OFFSET 0x01
196 #define MOV_TFHD_STSD_ID 0x02
197 #define MOV_TFHD_DEFAULT_DURATION 0x08
198 #define MOV_TFHD_DEFAULT_SIZE 0x10
199 #define MOV_TFHD_DEFAULT_FLAGS 0x20
200 #define MOV_TFHD_DURATION_IS_EMPTY 0x010000
201 #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000
203 #define MOV_TRUN_DATA_OFFSET 0x01
204 #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
205 #define MOV_TRUN_SAMPLE_DURATION 0x100
206 #define MOV_TRUN_SAMPLE_SIZE 0x200
207 #define MOV_TRUN_SAMPLE_FLAGS 0x400
208 #define MOV_TRUN_SAMPLE_CTS 0x800
210 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
211 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
212 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
213 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
214 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
215 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
217 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
218 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
220 #define MOV_TKHD_FLAG_ENABLED 0x0001
221 #define MOV_TKHD_FLAG_IN_MOVIE 0x0002
222 #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004
223 #define MOV_TKHD_FLAG_IN_POSTER 0x0008
225 #define TAG_IS_AVCI(tag) \
226 ((tag) == MKTAG('a', 'i', '5', 'p') || \
227 (tag) == MKTAG('a', 'i', '5', 'q') || \
228 (tag) == MKTAG('a', 'i', '5', '2') || \
229 (tag) == MKTAG('a', 'i', '5', '3') || \
230 (tag) == MKTAG('a', 'i', '5', '5') || \
231 (tag) == MKTAG('a', 'i', '5', '6') || \
232 (tag) == MKTAG('a', 'i', '1', 'p') || \
233 (tag) == MKTAG('a', 'i', '1', 'q') || \
234 (tag) == MKTAG('a', 'i', '1', '2') || \
235 (tag) == MKTAG('a', 'i', '1', '3') || \
236 (tag) == MKTAG('a', 'i', '1', '5') || \
237 (tag) == MKTAG('a', 'i', '1', '6') || \
238 (tag) == MKTAG('A', 'V', 'i', 'n'))
241 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb);
243 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
246 * Compute codec id for 'lpcm' tag.
247 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
249 static inline enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
256 return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);
259 #endif /* AVFORMAT_ISOM_H */