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208 lines
6.9 KiB
208 lines
6.9 KiB
/* |
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* ISO Media common code |
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* copyright (c) 2001 Fabrice Bellard |
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* copyright (c) 2002 Francois Revol <revol@free.fr> |
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* copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVFORMAT_ISOM_H |
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#define AVFORMAT_ISOM_H |
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#include "avio.h" |
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#include "internal.h" |
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#include "dv.h" |
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/* isom.c */ |
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extern const AVCodecTag ff_mp4_obj_type[]; |
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extern const AVCodecTag ff_codec_movvideo_tags[]; |
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extern const AVCodecTag ff_codec_movaudio_tags[]; |
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extern const AVCodecTag ff_codec_movsubtitle_tags[]; |
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int ff_mov_iso639_to_lang(const char lang[4], int mp4); |
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int ff_mov_lang_to_iso639(unsigned code, char to[4]); |
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/* the QuickTime file format is quite convoluted... |
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* it has lots of index tables, each indexing something in another one... |
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* Here we just use what is needed to read the chunks |
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*/ |
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typedef struct MOVStts { |
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int count; |
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int duration; |
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} MOVStts; |
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typedef struct MOVStsc { |
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int first; |
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int count; |
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int id; |
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} MOVStsc; |
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typedef struct MOVDref { |
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uint32_t type; |
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char *path; |
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char *dir; |
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char volume[28]; |
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char filename[64]; |
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int16_t nlvl_to, nlvl_from; |
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} MOVDref; |
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typedef struct MOVAtom { |
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uint32_t type; |
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int64_t size; /* total size (excluding the size and type fields) */ |
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} MOVAtom; |
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struct MOVParseTableEntry; |
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typedef struct MOVFragment { |
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unsigned track_id; |
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uint64_t base_data_offset; |
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uint64_t moof_offset; |
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unsigned stsd_id; |
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unsigned duration; |
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unsigned size; |
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unsigned flags; |
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} MOVFragment; |
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typedef struct MOVTrackExt { |
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unsigned track_id; |
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unsigned stsd_id; |
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unsigned duration; |
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unsigned size; |
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unsigned flags; |
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} MOVTrackExt; |
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typedef struct MOVSbgp { |
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unsigned int count; |
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unsigned int index; |
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} MOVSbgp; |
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typedef struct MOVStreamContext { |
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AVIOContext *pb; |
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int ffindex; ///< AVStream index |
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int next_chunk; |
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unsigned int chunk_count; |
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int64_t *chunk_offsets; |
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unsigned int stts_count; |
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MOVStts *stts_data; |
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unsigned int ctts_count; |
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MOVStts *ctts_data; |
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unsigned int stsc_count; |
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MOVStsc *stsc_data; |
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unsigned int stps_count; |
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unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop |
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int ctts_index; |
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int ctts_sample; |
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unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom |
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unsigned int alt_sample_size; ///< always contains sample size from stsz atom |
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unsigned int sample_count; |
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int *sample_sizes; |
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int keyframe_absent; |
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unsigned int keyframe_count; |
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int *keyframes; |
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int time_scale; |
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int64_t empty_duration; ///< empty duration of the first edit list entry |
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int64_t start_time; ///< start time of the media |
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int64_t time_offset; ///< time offset of the edit list entries |
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int current_sample; |
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unsigned int bytes_per_frame; |
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unsigned int samples_per_frame; |
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int dv_audio_container; |
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int pseudo_stream_id; ///< -1 means demux all ids |
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int16_t audio_cid; ///< stsd audio compression id |
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unsigned drefs_count; |
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MOVDref *drefs; |
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int dref_id; |
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int timecode_track; |
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int wrong_dts; ///< dts are wrong due to huge ctts offset (iMovie files) |
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int width; ///< tkhd width |
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int height; ///< tkhd height |
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int dts_shift; ///< dts shift when ctts is negative |
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uint32_t palette[256]; |
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int has_palette; |
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int64_t data_size; |
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uint32_t tmcd_flags; ///< tmcd track flags |
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int64_t track_end; ///< used for dts generation in fragmented movie files |
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int start_pad; ///< amount of samples to skip due to enc-dec delay |
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unsigned int rap_group_count; |
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MOVSbgp *rap_group; |
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} MOVStreamContext; |
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typedef struct MOVContext { |
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AVClass *avclass; |
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AVFormatContext *fc; |
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int time_scale; |
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int64_t duration; ///< duration of the longest track |
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int found_moov; ///< 'moov' atom has been found |
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int found_mdat; ///< 'mdat' atom has been found |
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DVDemuxContext *dv_demux; |
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AVFormatContext *dv_fctx; |
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int isom; ///< 1 if file is ISO Media (mp4/3gp) |
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MOVFragment fragment; ///< current fragment in moof atom |
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MOVTrackExt *trex_data; |
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unsigned trex_count; |
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int itunes_metadata; ///< metadata are itunes style |
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int chapter_track; |
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int use_absolute_path; |
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int ignore_editlist; |
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int64_t next_root_atom; ///< offset of the next root atom |
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} MOVContext; |
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int ff_mp4_read_descr_len(AVIOContext *pb); |
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int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag); |
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int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb); |
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void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id); |
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#define MP4ODescrTag 0x01 |
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#define MP4IODescrTag 0x02 |
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#define MP4ESDescrTag 0x03 |
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#define MP4DecConfigDescrTag 0x04 |
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#define MP4DecSpecificDescrTag 0x05 |
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#define MP4SLDescrTag 0x06 |
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#define MOV_TFHD_BASE_DATA_OFFSET 0x01 |
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#define MOV_TFHD_STSD_ID 0x02 |
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#define MOV_TFHD_DEFAULT_DURATION 0x08 |
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#define MOV_TFHD_DEFAULT_SIZE 0x10 |
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#define MOV_TFHD_DEFAULT_FLAGS 0x20 |
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#define MOV_TFHD_DURATION_IS_EMPTY 0x010000 |
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#define MOV_TRUN_DATA_OFFSET 0x01 |
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#define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04 |
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#define MOV_TRUN_SAMPLE_DURATION 0x100 |
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#define MOV_TRUN_SAMPLE_SIZE 0x200 |
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#define MOV_TRUN_SAMPLE_FLAGS 0x400 |
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#define MOV_TRUN_SAMPLE_CTS 0x800 |
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#define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff |
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#define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000 |
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#define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000 |
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#define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000 |
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#define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000 |
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#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000 |
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#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000 |
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#define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000 |
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int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom); |
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enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags); |
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int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries); |
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void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout); |
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#endif /* AVFORMAT_ISOM_H */
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