blob: 3e8ab45ff8b531ea3db5821866cd964f59575460 [file] [log] [blame]
* ISO Media common code
* copyright (c) 2001 Fabrice Bellard
* copyright (c) 2002 Francois Revol <>
* copyright (c) 2006 Baptiste Coudurier <>
* This file is part of FFmpeg.
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#include "avio.h"
#include "riff.h"
#include "dv.h"
/* isom.c */
extern const AVCodecTag ff_mp4_obj_type[];
extern const AVCodecTag codec_movvideo_tags[];
extern const AVCodecTag codec_movaudio_tags[];
extern const AVCodecTag ff_codec_movsubtitle_tags[];
int ff_mov_iso639_to_lang(const char *lang, int mp4);
int ff_mov_lang_to_iso639(unsigned code, char *to);
/* the QuickTime file format is quite convoluted...
* it has lots of index tables, each indexing something in another one...
* Here we just use what is needed to read the chunks
typedef struct {
int count;
int duration;
} MOVStts;
typedef struct {
int first;
int count;
int id;
} MOVStsc;
typedef struct {
uint32_t type;
char *path;
} MOVDref;
typedef struct {
uint32_t type;
int64_t offset;
int64_t size; /* total size (excluding the size and type fields) */
} MOVAtom;
struct MOVParseTableEntry;
typedef struct {
unsigned track_id;
uint64_t base_data_offset;
uint64_t moof_offset;
unsigned stsd_id;
unsigned duration;
unsigned size;
unsigned flags;
} MOVFragment;
typedef struct {
unsigned track_id;
unsigned stsd_id;
unsigned duration;
unsigned size;
unsigned flags;
} MOVTrackExt;
typedef struct MOVStreamContext {
ByteIOContext *pb;
int ffindex; /* the ffmpeg stream id */
int next_chunk;
unsigned int chunk_count;
int64_t *chunk_offsets;
unsigned int stts_count;
MOVStts *stts_data;
unsigned int ctts_count;
MOVStts *ctts_data;
unsigned int stsc_count;
MOVStsc *stsc_data;
int ctts_index;
int ctts_sample;
unsigned int sample_size;
unsigned int sample_count;
int *sample_sizes;
unsigned int keyframe_count;
int *keyframes;
int time_scale;
int time_rate;
int time_offset; ///< time offset of the first edit list entry
int current_sample;
unsigned int bytes_per_frame;
unsigned int samples_per_frame;
int dv_audio_container;
int pseudo_stream_id; ///< -1 means demux all ids
int16_t audio_cid; ///< stsd audio compression id
unsigned drefs_count;
MOVDref *drefs;
int dref_id;
int wrong_dts; ///< dts are wrong due to negative ctts
int width; ///< tkhd width
int height; ///< tkhd height
#ifdef EM8622
unsigned int index_chunk;
unsigned int index_chunk_sample;
unsigned int index_stts_sample;
unsigned int index_sample_size;
int64_t index_current_dts;
int64_t index_current_offset;
unsigned int index_stts_index;
unsigned int index_stsc_index;
unsigned int index_stss_index;
unsigned int index_keyframe;
} MOVStreamContext;
typedef struct MOVContext {
AVFormatContext *fc;
int time_scale;
int64_t duration; /* duration of the longest track */
int found_moov; /* when both 'moov' and 'mdat' sections has been found */
int found_mdat; /* we suppose we have enough data to read the file */
DVDemuxContext *dv_demux;
AVFormatContext *dv_fctx;
int isom; /* 1 if file is ISO Media (mp4/3gp) */
MOVFragment fragment; ///< current fragment in moof atom
MOVTrackExt *trex_data;
unsigned trex_count;
int itunes_metadata; ///< metadata are itunes style
} MOVContext;
#endif /* AVFORMAT_ISOM_H */