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 codec_movvideo_tags
[];
34 extern const AVCodecTag codec_movaudio_tags
[];
35 extern const AVCodecTag ff_codec_movsubtitle_tags
[];
37 int ff_mov_iso639_to_lang(const char *lang
, int mp4
);
38 int ff_mov_lang_to_iso639(unsigned code
, char *to
);
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
64 int64_t size
; /* total size (excluding the size and type fields) */
67 struct MOVParseTableEntry
;
71 uint64_t base_data_offset
;
87 typedef struct MOVStreamContext
{
89 int ffindex
; ///< AVStream index
91 unsigned int chunk_count
;
92 int64_t *chunk_offsets
;
93 unsigned int stts_count
;
95 unsigned int ctts_count
;
97 unsigned int stsc_count
;
99 unsigned int stps_count
;
100 unsigned *stps_data
; ///< partial sync sample for mpeg-2 open gop
103 unsigned int sample_size
;
104 unsigned int sample_count
;
106 unsigned int keyframe_count
;
109 int time_offset
; ///< time offset of the first edit list entry
111 unsigned int bytes_per_frame
;
112 unsigned int samples_per_frame
;
113 int dv_audio_container
;
114 int pseudo_stream_id
; ///< -1 means demux all ids
115 int16_t audio_cid
; ///< stsd audio compression id
116 unsigned drefs_count
;
119 int wrong_dts
; ///< dts are wrong due to huge ctts offset (iMovie files)
120 int width
; ///< tkhd width
121 int height
; ///< tkhd height
122 int dts_shift
; ///< dts shift when ctts is negative
125 typedef struct MOVContext
{
128 int64_t duration
; ///< duration of the longest track
129 int found_moov
; ///< 'moov' atom has been found
130 int found_mdat
; ///< 'mdat' atom has been found
131 DVDemuxContext
*dv_demux
;
132 AVFormatContext
*dv_fctx
;
133 int isom
; ///< 1 if file is ISO Media (mp4/3gp)
134 MOVFragment fragment
; ///< current fragment in moof atom
135 MOVTrackExt
*trex_data
;
137 int itunes_metadata
; ///< metadata are itunes style
140 int ff_mp4_read_descr_len(ByteIOContext
*pb
);
141 int ff_mov_read_esds(AVFormatContext
*fc
, ByteIOContext
*pb
, MOVAtom atom
);
142 enum CodecID
ff_mov_get_lpcm_codec_id(int bps
, int flags
);
144 #endif /* AVFORMAT_ISOM_H */