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| /* |
| * 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 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 |
| * 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 FFmpeg; 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 pb_is_copied; |
| 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; ///< may contain value calculated from stsd or value from stsz atom |
| unsigned int stsz_sample_size; ///< always contains sample size from stsz atom |
| unsigned int sample_count; |
| int *sample_sizes; |
| int keyframe_absent; |
| unsigned int keyframe_count; |
| int *keyframes; |
| int time_scale; |
| int64_t empty_duration; ///< empty duration of the first edit list entry |
| int64_t start_time; ///< start time of the media |
| int64_t time_offset; ///< time offset of the edit list entries |
| 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 timecode_track; |
| 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; |
| uint32_t tmcd_flags; ///< tmcd track flags |
| int64_t track_end; ///< used for dts generation in fragmented movie files |
| int start_pad; ///< amount of samples to skip due to enc-dec delay |
| unsigned int rap_group_count; |
| MOVSbgp *rap_group; |
| } MOVStreamContext; |
| |
| typedef struct MOVContext { |
| AVClass *avclass; |
| 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; |
| int use_absolute_path; |
| int ignore_editlist; |
| int64_t next_root_atom; ///< offset of the next root atom |
| int *bitrates; ///< bitrates read before streams creation |
| int bitrates_count; |
| } 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 |
| |
| #define MOV_TKHD_FLAG_ENABLED 0x0001 |
| #define MOV_TKHD_FLAG_IN_MOVIE 0x0002 |
| #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004 |
| #define MOV_TKHD_FLAG_IN_POSTER 0x0008 |
| |
| 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); |
| void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout); |
| |
| #endif /* AVFORMAT_ISOM_H */ |