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 MOVDref {
62 int16_t nlvl_to, nlvl_from;
65 typedef struct MOVAtom {
67 int64_t size; /* total size (excluding the size and type fields) */
70 struct MOVParseTableEntry;
72 typedef struct MOVFragment {
74 uint64_t base_data_offset;
82 typedef struct MOVTrackExt {
90 typedef struct MOVSbgp {
95 typedef struct MOVStreamContext {
97 int ffindex; ///< AVStream index
99 unsigned int chunk_count;
100 int64_t *chunk_offsets;
101 unsigned int stts_count;
103 unsigned int ctts_count;
105 unsigned int stsc_count;
107 unsigned int stps_count;
108 unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
111 unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom
112 unsigned int alt_sample_size; ///< always contains sample size from stsz atom
113 unsigned int sample_count;
116 unsigned int keyframe_count;
119 int64_t empty_duration; ///< empty duration of the first edit list entry
120 int64_t start_time; ///< start time of the media
121 int64_t time_offset; ///< time offset of the edit list entries
123 unsigned int bytes_per_frame;
124 unsigned int samples_per_frame;
125 int dv_audio_container;
126 int pseudo_stream_id; ///< -1 means demux all ids
127 int16_t audio_cid; ///< stsd audio compression id
128 unsigned drefs_count;
132 unsigned trefs_count;
134 int wrong_dts; ///< dts are wrong due to huge ctts offset (iMovie files)
135 int width; ///< tkhd width
136 int height; ///< tkhd height
137 int dts_shift; ///< dts shift when ctts is negative
138 uint32_t palette[256];
141 uint32_t tmcd_flags; ///< tmcd track flags
142 int64_t track_end; ///< used for dts generation in fragmented movie files
143 int start_pad; ///< amount of samples to skip due to enc-dec delay
144 unsigned int rap_group_count;
148 typedef struct MOVContext {
152 int64_t duration; ///< duration of the longest track
153 int found_moov; ///< 'moov' atom has been found
154 int found_mdat; ///< 'mdat' atom has been found
155 DVDemuxContext *dv_demux;
156 AVFormatContext *dv_fctx;
157 int isom; ///< 1 if file is ISO Media (mp4/3gp)
158 MOVFragment fragment; ///< current fragment in moof atom
159 MOVTrackExt *trex_data;
161 int itunes_metadata; ///< metadata are itunes style
163 int use_absolute_path;
165 int64_t next_root_atom; ///< offset of the next root atom
168 int ff_mp4_read_descr_len(AVIOContext *pb);
169 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
170 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
171 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
173 #define MP4ODescrTag 0x01
174 #define MP4IODescrTag 0x02
175 #define MP4ESDescrTag 0x03
176 #define MP4DecConfigDescrTag 0x04
177 #define MP4DecSpecificDescrTag 0x05
178 #define MP4SLDescrTag 0x06
180 #define MOV_TFHD_BASE_DATA_OFFSET 0x01
181 #define MOV_TFHD_STSD_ID 0x02
182 #define MOV_TFHD_DEFAULT_DURATION 0x08
183 #define MOV_TFHD_DEFAULT_SIZE 0x10
184 #define MOV_TFHD_DEFAULT_FLAGS 0x20
185 #define MOV_TFHD_DURATION_IS_EMPTY 0x010000
187 #define MOV_TRUN_DATA_OFFSET 0x01
188 #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
189 #define MOV_TRUN_SAMPLE_DURATION 0x100
190 #define MOV_TRUN_SAMPLE_SIZE 0x200
191 #define MOV_TRUN_SAMPLE_FLAGS 0x400
192 #define MOV_TRUN_SAMPLE_CTS 0x800
194 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
195 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
196 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
197 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
198 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
199 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
201 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
202 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
204 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom);
205 enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags);
207 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
208 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);
210 #endif /* AVFORMAT_ISOM_H */