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437 lines
13 KiB
437 lines
13 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 <stddef.h> |
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#include <stdint.h> |
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#include "libavutil/encryption_info.h" |
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#include "libavutil/mastering_display_metadata.h" |
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#include "libavutil/spherical.h" |
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#include "libavutil/stereo3d.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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extern const AVCodecTag ff_codec_movdata_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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struct AVAESCTR; |
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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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unsigned int count; |
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unsigned int duration; |
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} MOVStts; |
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typedef struct MOVCtts { |
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unsigned int count; |
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int duration; |
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} MOVCtts; |
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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 MOVElst { |
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int64_t duration; |
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int64_t time; |
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float rate; |
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} MOVElst; |
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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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int found_tfhd; |
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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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uint64_t implicit_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 MOVEncryptionIndex { |
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// Individual encrypted samples. If there are no elements, then the default |
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// settings will be used. |
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unsigned int nb_encrypted_samples; |
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AVEncryptionInfo **encrypted_samples; |
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uint8_t* auxiliary_info_sizes; |
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size_t auxiliary_info_sample_count; |
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uint8_t auxiliary_info_default_size; |
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uint64_t* auxiliary_offsets; ///< Absolute seek position |
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size_t auxiliary_offsets_count; |
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} MOVEncryptionIndex; |
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typedef struct MOVFragmentStreamInfo { |
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int id; |
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int64_t sidx_pts; |
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int64_t first_tfra_pts; |
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int64_t tfdt_dts; |
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int64_t next_trun_dts; |
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// Index of the first sample/trun in the fragment. |
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int index_base; |
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int index_entry; |
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MOVEncryptionIndex *encryption_index; |
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int stsd_id; // current fragment stsd_id |
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} MOVFragmentStreamInfo; |
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typedef struct MOVFragmentIndexItem { |
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int64_t moof_offset; |
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int headers_read; |
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int current; |
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int nb_stream_info; |
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MOVFragmentStreamInfo * stream_info; |
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} MOVFragmentIndexItem; |
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typedef struct MOVFragmentIndex { |
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int allocated_size; |
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int complete; |
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int current; |
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int nb_items; |
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MOVFragmentIndexItem * item; |
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} MOVFragmentIndex; |
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typedef struct MOVIndexRange { |
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int64_t start; |
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int64_t end; |
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} MOVIndexRange; |
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typedef struct MOVStreamContext { |
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AVIOContext *pb; |
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int pb_is_copied; |
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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 sdtp_count; |
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uint8_t *sdtp_data; |
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unsigned int ctts_count; |
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unsigned int ctts_allocated_size; |
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MOVCtts *ctts_data; |
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unsigned int stsc_count; |
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MOVStsc *stsc_data; |
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unsigned int stsc_index; |
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int stsc_sample; |
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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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MOVElst *elst_data; |
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unsigned int elst_count; |
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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 stsz_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 time_offset; ///< time offset of the edit list entries |
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int64_t min_corrected_pts; ///< minimum Composition time shown by the edits excluding empty edits. |
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int current_sample; |
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int64_t current_index; |
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MOVIndexRange* index_ranges; |
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MOVIndexRange* current_index_range; |
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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 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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uint8_t tmcd_nb_frames; ///< tmcd number of frames per tick / second |
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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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unsigned int sync_group_count; |
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MOVSbgp *sync_group; |
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uint8_t *sgpd_sync; |
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uint32_t sgpd_sync_count; |
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int32_t *sample_offsets; |
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int sample_offsets_count; |
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int *open_key_samples; |
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int open_key_samples_count; |
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uint32_t min_sample_duration; |
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int nb_frames_for_fps; |
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int64_t duration_for_fps; |
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/** extradata array (and size) for multiple stsd */ |
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uint8_t **extradata; |
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int *extradata_size; |
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int last_stsd_index; |
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int stsd_count; |
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int stsd_version; |
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int32_t *display_matrix; |
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AVStereo3D *stereo3d; |
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AVSphericalMapping *spherical; |
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size_t spherical_size; |
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AVMasteringDisplayMetadata *mastering; |
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AVContentLightMetadata *coll; |
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size_t coll_size; |
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uint32_t format; |
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int has_sidx; // If there is an sidx entry for this stream. |
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struct { |
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struct AVAESCTR* aes_ctr; |
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struct AVAES *aes_ctx; |
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unsigned int per_sample_iv_size; // Either 0, 8, or 16. |
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AVEncryptionInfo *default_encrypted_sample; |
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MOVEncryptionIndex *encryption_index; |
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} cenc; |
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} MOVStreamContext; |
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typedef struct MOVContext { |
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const AVClass *class; ///< class for private options |
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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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int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found |
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int trak_index; ///< Index of the current 'trak' |
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char **meta_keys; |
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unsigned meta_keys_count; |
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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 handbrake_version; |
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int *chapter_tracks; |
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unsigned int nb_chapter_tracks; |
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int use_absolute_path; |
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int ignore_editlist; |
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int advanced_editlist; |
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int advanced_editlist_autodisabled; |
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int ignore_chapters; |
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int seek_individually; |
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int64_t next_root_atom; ///< offset of the next root atom |
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int export_all; |
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int export_xmp; |
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int *bitrates; ///< bitrates read before streams creation |
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int bitrates_count; |
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int moov_retry; |
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int use_mfra_for; |
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int has_looked_for_mfra; |
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int use_tfdt; |
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MOVFragmentIndex frag_index; |
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int atom_depth; |
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unsigned int aax_mode; ///< 'aax' file has been detected |
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uint8_t file_key[20]; |
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uint8_t file_iv[20]; |
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void *activation_bytes; |
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int activation_bytes_size; |
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void *audible_fixed_key; |
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int audible_fixed_key_size; |
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void *audible_key; |
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int audible_key_size; |
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void *audible_iv; |
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int audible_iv_size; |
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struct AVAES *aes_decrypt; |
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uint8_t *decryption_key; |
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int decryption_key_len; |
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int enable_drefs; |
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int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd |
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int have_read_mfra_size; |
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uint32_t mfra_size; |
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uint32_t max_stts_delta; |
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int is_still_picture_avif; |
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int primary_item_id; |
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struct { |
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int item_id; |
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int extent_length; |
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int64_t extent_offset; |
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} *avif_info; |
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int avif_info_size; |
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int interleaved_read; |
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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_TFHD_DEFAULT_BASE_IS_MOOF 0x020000 |
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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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#define MOV_TKHD_FLAG_ENABLED 0x0001 |
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#define MOV_TKHD_FLAG_IN_MOVIE 0x0002 |
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#define MOV_TKHD_FLAG_IN_PREVIEW 0x0004 |
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#define MOV_TKHD_FLAG_IN_POSTER 0x0008 |
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#define MOV_SAMPLE_DEPENDENCY_UNKNOWN 0x0 |
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#define MOV_SAMPLE_DEPENDENCY_YES 0x1 |
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#define MOV_SAMPLE_DEPENDENCY_NO 0x2 |
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#define TAG_IS_AVCI(tag) \ |
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((tag) == MKTAG('a', 'i', '5', 'p') || \ |
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(tag) == MKTAG('a', 'i', '5', 'q') || \ |
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(tag) == MKTAG('a', 'i', '5', '2') || \ |
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(tag) == MKTAG('a', 'i', '5', '3') || \ |
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(tag) == MKTAG('a', 'i', '5', '5') || \ |
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(tag) == MKTAG('a', 'i', '5', '6') || \ |
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(tag) == MKTAG('a', 'i', '1', 'p') || \ |
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(tag) == MKTAG('a', 'i', '1', 'q') || \ |
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(tag) == MKTAG('a', 'i', '1', '2') || \ |
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(tag) == MKTAG('a', 'i', '1', '3') || \ |
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(tag) == MKTAG('a', 'i', '1', '5') || \ |
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(tag) == MKTAG('a', 'i', '1', '6') || \ |
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(tag) == MKTAG('a', 'i', 'v', 'x') || \ |
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(tag) == MKTAG('A', 'V', 'i', 'n')) |
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int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb); |
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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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#define FF_MOV_FLAG_MFRA_AUTO -1 |
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#define FF_MOV_FLAG_MFRA_DTS 1 |
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#define FF_MOV_FLAG_MFRA_PTS 2 |
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/** |
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* Compute codec id for 'lpcm' tag. |
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* See CoreAudioTypes and AudioStreamBasicDescription at Apple. |
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*/ |
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static inline enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags) |
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{ |
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/* lpcm flags: |
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* 0x1 = float |
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* 0x2 = big-endian |
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* 0x4 = signed |
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*/ |
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return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0); |
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} |
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#define MOV_ISMV_TTML_TAG MKTAG('d', 'f', 'x', 'p') |
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#define MOV_MP4_TTML_TAG MKTAG('s', 't', 'p', 'p') |
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#define MOV_MP4_FPCM_TAG MKTAG('f', 'p', 'c', 'm') |
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#define MOV_MP4_IPCM_TAG MKTAG('i', 'p', 'c', 'm') |
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struct MP4TrackKindValueMapping { |
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int disposition; |
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const char *value; |
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}; |
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struct MP4TrackKindMapping { |
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const char *scheme_uri; |
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const struct MP4TrackKindValueMapping *value_maps; |
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}; |
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extern const struct MP4TrackKindMapping ff_mov_track_kind_table[]; |
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#endif /* AVFORMAT_ISOM_H */
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