mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-11-27 13:30:45 +00:00
199 lines
6.3 KiB
C
199 lines
6.3 KiB
C
/*
|
|
* ISO Media common code
|
|
* copyright (c) 2001 Fabrice Bellard
|
|
* copyright (c) 2002 Francois Revol <revol@free.fr>
|
|
* copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVFORMAT_ISOM_H
|
|
#define AVFORMAT_ISOM_H
|
|
|
|
#include "avio.h"
|
|
#include "internal.h"
|
|
#include "dv.h"
|
|
|
|
/* isom.c */
|
|
extern const AVCodecTag ff_mp4_obj_type[];
|
|
extern const AVCodecTag ff_codec_movvideo_tags[];
|
|
extern const AVCodecTag ff_codec_movaudio_tags[];
|
|
extern const AVCodecTag ff_codec_movsubtitle_tags[];
|
|
|
|
int ff_mov_iso639_to_lang(const char lang[4], int mp4);
|
|
int ff_mov_lang_to_iso639(unsigned code, char to[4]);
|
|
|
|
/* 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 MOVStts {
|
|
int count;
|
|
int duration;
|
|
} MOVStts;
|
|
|
|
typedef struct MOVStsc {
|
|
int first;
|
|
int count;
|
|
int id;
|
|
} MOVStsc;
|
|
|
|
typedef struct MOVDref {
|
|
uint32_t type;
|
|
char *path;
|
|
char *dir;
|
|
char volume[28];
|
|
char filename[64];
|
|
int16_t nlvl_to, nlvl_from;
|
|
} MOVDref;
|
|
|
|
typedef struct MOVAtom {
|
|
uint32_t type;
|
|
int64_t size; /* total size (excluding the size and type fields) */
|
|
} MOVAtom;
|
|
|
|
struct MOVParseTableEntry;
|
|
|
|
typedef struct MOVFragment {
|
|
unsigned track_id;
|
|
uint64_t base_data_offset;
|
|
uint64_t moof_offset;
|
|
unsigned stsd_id;
|
|
unsigned duration;
|
|
unsigned size;
|
|
unsigned flags;
|
|
} MOVFragment;
|
|
|
|
typedef struct MOVTrackExt {
|
|
unsigned track_id;
|
|
unsigned stsd_id;
|
|
unsigned duration;
|
|
unsigned size;
|
|
unsigned flags;
|
|
} MOVTrackExt;
|
|
|
|
typedef struct MOVSbgp {
|
|
unsigned int count;
|
|
unsigned int index;
|
|
} MOVSbgp;
|
|
|
|
typedef struct MOVStreamContext {
|
|
AVIOContext *pb;
|
|
int ffindex; ///< AVStream index
|
|
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;
|
|
unsigned int stps_count;
|
|
unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop
|
|
int ctts_index;
|
|
int ctts_sample;
|
|
unsigned int sample_size;
|
|
unsigned int sample_count;
|
|
int *sample_sizes;
|
|
int keyframe_absent;
|
|
unsigned int keyframe_count;
|
|
int *keyframes;
|
|
int time_scale;
|
|
int64_t 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 huge ctts offset (iMovie files)
|
|
int width; ///< tkhd width
|
|
int height; ///< tkhd height
|
|
int dts_shift; ///< dts shift when ctts is negative
|
|
uint32_t palette[256];
|
|
int has_palette;
|
|
int64_t data_size;
|
|
int64_t track_end; ///< used for dts generation in fragmented movie files
|
|
unsigned int rap_group_count;
|
|
MOVSbgp *rap_group;
|
|
} MOVStreamContext;
|
|
|
|
typedef struct MOVContext {
|
|
AVFormatContext *fc;
|
|
int time_scale;
|
|
int64_t duration; ///< duration of the longest track
|
|
int found_moov; ///< 'moov' atom has been found
|
|
int found_mdat; ///< 'mdat' atom has been found
|
|
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
|
|
int chapter_track;
|
|
int64_t next_root_atom; ///< offset of the next root atom
|
|
} MOVContext;
|
|
|
|
int ff_mp4_read_descr_len(AVIOContext *pb);
|
|
int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
|
|
int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);
|
|
void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);
|
|
|
|
#define MP4ODescrTag 0x01
|
|
#define MP4IODescrTag 0x02
|
|
#define MP4ESDescrTag 0x03
|
|
#define MP4DecConfigDescrTag 0x04
|
|
#define MP4DecSpecificDescrTag 0x05
|
|
#define MP4SLDescrTag 0x06
|
|
|
|
#define MOV_TFHD_BASE_DATA_OFFSET 0x01
|
|
#define MOV_TFHD_STSD_ID 0x02
|
|
#define MOV_TFHD_DEFAULT_DURATION 0x08
|
|
#define MOV_TFHD_DEFAULT_SIZE 0x10
|
|
#define MOV_TFHD_DEFAULT_FLAGS 0x20
|
|
#define MOV_TFHD_DURATION_IS_EMPTY 0x010000
|
|
|
|
#define MOV_TRUN_DATA_OFFSET 0x01
|
|
#define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04
|
|
#define MOV_TRUN_SAMPLE_DURATION 0x100
|
|
#define MOV_TRUN_SAMPLE_SIZE 0x200
|
|
#define MOV_TRUN_SAMPLE_FLAGS 0x400
|
|
#define MOV_TRUN_SAMPLE_CTS 0x800
|
|
|
|
#define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
|
|
#define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000
|
|
#define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000
|
|
#define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000
|
|
#define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000
|
|
#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000
|
|
|
|
#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000
|
|
#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000
|
|
|
|
int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom);
|
|
enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags);
|
|
|
|
int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);
|
|
|
|
#endif /* AVFORMAT_ISOM_H */
|