mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-20 22:41:11 +00:00
470 lines
14 KiB
C
470 lines
14 KiB
C
/*
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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/ambient_viewing_environment.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 refcount;
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int pb_is_copied;
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int id; ///< AVStream id
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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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unsigned 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 h_spacing; ///< pasp hSpacing
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int v_spacing; ///< pasp vSpacing
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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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size_t stereo3d_size;
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AVSphericalMapping *spherical;
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size_t spherical_size;
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AVMasteringDisplayMetadata *mastering;
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size_t mastering_size;
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AVContentLightMetadata *coll;
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size_t coll_size;
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AVAmbientViewingEnvironment *ambient;
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size_t ambient_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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struct IAMFDemuxContext *iamf;
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} MOVStreamContext;
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typedef struct HEIFItem {
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AVStream *st;
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char *name;
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int item_id;
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int64_t extent_length;
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int64_t extent_offset;
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int width;
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int height;
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int type;
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int is_idat_relative;
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} HEIFItem;
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typedef struct HEIFGrid {
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HEIFItem *item;
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HEIFItem **tile_item_list;
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int16_t *tile_id_list;
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int nb_tiles;
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} HEIFGrid;
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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_iloc; ///< 'iloc' atom has been found
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int found_iinf; ///< 'iinf' 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 primary_item_id;
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int cur_item_id;
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HEIFItem *heif_item;
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int nb_heif_item;
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HEIFGrid *heif_grid;
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int nb_heif_grid;
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int thmb_item_id;
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int64_t idat_offset;
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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(void *logctx, AVIOContext *pb, int *tag);
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int ff_mp4_read_dec_config_descr(void *logctx, 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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