| /* |
| * 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 <stddef.h> |
| #include <stdint.h> |
| |
| #include "libavutil/encryption_info.h" |
| #include "libavutil/mastering_display_metadata.h" |
| #include "libavutil/spherical.h" |
| #include "libavutil/stereo3d.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[]; |
| extern const AVCodecTag ff_codec_movdata_tags[]; |
| |
| int ff_mov_iso639_to_lang(const char lang[4], int mp4); |
| int ff_mov_lang_to_iso639(unsigned code, char to[4]); |
| |
| struct AVAESCTR; |
| |
| /* 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 { |
| unsigned int count; |
| unsigned int duration; |
| } MOVStts; |
| |
| typedef struct MOVCtts { |
| unsigned int count; |
| int duration; |
| } MOVCtts; |
| |
| typedef struct MOVStsc { |
| int first; |
| int count; |
| int id; |
| } MOVStsc; |
| |
| typedef struct MOVElst { |
| int64_t duration; |
| int64_t time; |
| float rate; |
| } MOVElst; |
| |
| 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 { |
| int found_tfhd; |
| unsigned track_id; |
| uint64_t base_data_offset; |
| uint64_t moof_offset; |
| uint64_t implicit_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 MOVEncryptionIndex { |
| // Individual encrypted samples. If there are no elements, then the default |
| // settings will be used. |
| unsigned int nb_encrypted_samples; |
| AVEncryptionInfo **encrypted_samples; |
| |
| uint8_t* auxiliary_info_sizes; |
| size_t auxiliary_info_sample_count; |
| uint8_t auxiliary_info_default_size; |
| uint64_t* auxiliary_offsets; ///< Absolute seek position |
| size_t auxiliary_offsets_count; |
| } MOVEncryptionIndex; |
| |
| typedef struct MOVFragmentStreamInfo { |
| int id; |
| int64_t sidx_pts; |
| int64_t first_tfra_pts; |
| int64_t tfdt_dts; |
| int64_t next_trun_dts; |
| int index_entry; |
| MOVEncryptionIndex *encryption_index; |
| } MOVFragmentStreamInfo; |
| |
| typedef struct MOVFragmentIndexItem { |
| int64_t moof_offset; |
| int headers_read; |
| int current; |
| int nb_stream_info; |
| MOVFragmentStreamInfo * stream_info; |
| } MOVFragmentIndexItem; |
| |
| typedef struct MOVFragmentIndex { |
| int allocated_size; |
| int complete; |
| int current; |
| int nb_items; |
| MOVFragmentIndexItem * item; |
| } MOVFragmentIndex; |
| |
| typedef struct MOVIndexRange { |
| int64_t start; |
| int64_t end; |
| } MOVIndexRange; |
| |
| 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 sdtp_count; |
| uint8_t *sdtp_data; |
| unsigned int ctts_count; |
| unsigned int ctts_allocated_size; |
| MOVCtts *ctts_data; |
| unsigned int stsc_count; |
| MOVStsc *stsc_data; |
| unsigned int stsc_index; |
| int stsc_sample; |
| unsigned int stps_count; |
| unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop |
| MOVElst *elst_data; |
| unsigned int elst_count; |
| 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 time_offset; ///< time offset of the edit list entries |
| int64_t min_corrected_pts; ///< minimum Composition time shown by the edits excluding empty edits. |
| int current_sample; |
| int64_t current_index; |
| MOVIndexRange* index_ranges; |
| MOVIndexRange* current_index_range; |
| 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 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 |
| uint8_t tmcd_nb_frames; ///< tmcd number of frames per tick / second |
| 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; |
| unsigned int sync_group_count; |
| MOVSbgp *sync_group; |
| uint8_t *sgpd_sync; |
| uint32_t sgpd_sync_count; |
| int32_t *sample_offsets; |
| int sample_offsets_count; |
| int *open_key_samples; |
| int open_key_samples_count; |
| uint32_t min_sample_duration; |
| |
| int nb_frames_for_fps; |
| int64_t duration_for_fps; |
| |
| /** extradata array (and size) for multiple stsd */ |
| uint8_t **extradata; |
| int *extradata_size; |
| int last_stsd_index; |
| int stsd_count; |
| int stsd_version; |
| |
| int32_t *display_matrix; |
| AVStereo3D *stereo3d; |
| AVSphericalMapping *spherical; |
| size_t spherical_size; |
| AVMasteringDisplayMetadata *mastering; |
| AVContentLightMetadata *coll; |
| size_t coll_size; |
| |
| uint32_t format; |
| |
| int has_sidx; // If there is an sidx entry for this stream. |
| struct { |
| struct AVAESCTR* aes_ctr; |
| struct AVAES *aes_ctx; |
| unsigned int frag_index_entry_base; |
| unsigned int per_sample_iv_size; // Either 0, 8, or 16. |
| AVEncryptionInfo *default_encrypted_sample; |
| MOVEncryptionIndex *encryption_index; |
| } cenc; |
| } MOVStreamContext; |
| |
| typedef struct MOVContext { |
| const AVClass *class; ///< class for private options |
| 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 |
| int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found |
| int trak_index; ///< Index of the current 'trak' |
| char **meta_keys; |
| unsigned meta_keys_count; |
| 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 handbrake_version; |
| int *chapter_tracks; |
| unsigned int nb_chapter_tracks; |
| int use_absolute_path; |
| int ignore_editlist; |
| int advanced_editlist; |
| int ignore_chapters; |
| int seek_individually; |
| int64_t next_root_atom; ///< offset of the next root atom |
| int export_all; |
| int export_xmp; |
| int *bitrates; ///< bitrates read before streams creation |
| int bitrates_count; |
| int moov_retry; |
| int use_mfra_for; |
| int has_looked_for_mfra; |
| int use_tfdt; |
| MOVFragmentIndex frag_index; |
| int atom_depth; |
| unsigned int aax_mode; ///< 'aax' file has been detected |
| uint8_t file_key[20]; |
| uint8_t file_iv[20]; |
| void *activation_bytes; |
| int activation_bytes_size; |
| void *audible_fixed_key; |
| int audible_fixed_key_size; |
| void *audible_key; |
| int audible_key_size; |
| void *audible_iv; |
| int audible_iv_size; |
| struct AVAES *aes_decrypt; |
| uint8_t *decryption_key; |
| int decryption_key_len; |
| int enable_drefs; |
| int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd |
| int have_read_mfra_size; |
| uint32_t mfra_size; |
| uint32_t max_stts_delta; |
| int is_still_picture_avif; |
| int primary_item_id; |
| } 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_TFHD_DEFAULT_BASE_IS_MOOF 0x020000 |
| |
| #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 |
| |
| #define MOV_SAMPLE_DEPENDENCY_UNKNOWN 0x0 |
| #define MOV_SAMPLE_DEPENDENCY_YES 0x1 |
| #define MOV_SAMPLE_DEPENDENCY_NO 0x2 |
| |
| |
| #define TAG_IS_AVCI(tag) \ |
| ((tag) == MKTAG('a', 'i', '5', 'p') || \ |
| (tag) == MKTAG('a', 'i', '5', 'q') || \ |
| (tag) == MKTAG('a', 'i', '5', '2') || \ |
| (tag) == MKTAG('a', 'i', '5', '3') || \ |
| (tag) == MKTAG('a', 'i', '5', '5') || \ |
| (tag) == MKTAG('a', 'i', '5', '6') || \ |
| (tag) == MKTAG('a', 'i', '1', 'p') || \ |
| (tag) == MKTAG('a', 'i', '1', 'q') || \ |
| (tag) == MKTAG('a', 'i', '1', '2') || \ |
| (tag) == MKTAG('a', 'i', '1', '3') || \ |
| (tag) == MKTAG('a', 'i', '1', '5') || \ |
| (tag) == MKTAG('a', 'i', '1', '6') || \ |
| (tag) == MKTAG('a', 'i', 'v', 'x') || \ |
| (tag) == MKTAG('A', 'V', 'i', 'n')) |
| |
| |
| int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb); |
| |
| int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries); |
| void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout); |
| |
| #define FF_MOV_FLAG_MFRA_AUTO -1 |
| #define FF_MOV_FLAG_MFRA_DTS 1 |
| #define FF_MOV_FLAG_MFRA_PTS 2 |
| |
| /** |
| * Compute codec id for 'lpcm' tag. |
| * See CoreAudioTypes and AudioStreamBasicDescription at Apple. |
| */ |
| static inline enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags) |
| { |
| /* lpcm flags: |
| * 0x1 = float |
| * 0x2 = big-endian |
| * 0x4 = signed |
| */ |
| return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0); |
| } |
| |
| #define MOV_ISMV_TTML_TAG MKTAG('d', 'f', 'x', 'p') |
| #define MOV_MP4_TTML_TAG MKTAG('s', 't', 'p', 'p') |
| |
| struct MP4TrackKindValueMapping { |
| int disposition; |
| const char *value; |
| }; |
| |
| struct MP4TrackKindMapping { |
| const char *scheme_uri; |
| const struct MP4TrackKindValueMapping *value_maps; |
| }; |
| |
| extern const struct MP4TrackKindMapping ff_mov_track_kind_table[]; |
| |
| #endif /* AVFORMAT_ISOM_H */ |
