falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
89361 Commits
32 Branches
293MB
Tree: 00d454ed2c
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '00d454ed2c'
${ noResults }
FFmpeg/libavformat/isom.h

367 lines
11KB
Raw Blame History 

  1. /*

  2.  * ISO Media common code

  3.  * copyright (c) 2001 Fabrice Bellard

  4.  * copyright (c) 2002 Francois Revol <revol@free.fr>

  5.  * copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>

  6.  *

  7.  * This file is part of FFmpeg.

  8.  *

  9.  * FFmpeg is free software; you can redistribute it and/or

  10.  * modify it under the terms of the GNU Lesser General Public

  11.  * License as published by the Free Software Foundation; either

  12.  * version 2.1 of the License, or (at your option) any later version.

  13.  *

  14.  * FFmpeg is distributed in the hope that it will be useful,

  15.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  16.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  17.  * Lesser General Public License for more details.

  18.  *

  19.  * You should have received a copy of the GNU Lesser General Public

  20.  * License along with FFmpeg; if not, write to the Free Software

  21.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  22.  */

  23. 

  24. #ifndef AVFORMAT_ISOM_H

  25. #define AVFORMAT_ISOM_H

  26. 

  27. #include <stddef.h>

  28. #include <stdint.h>

  29. 

  30. #include "libavutil/mastering_display_metadata.h"

  31. #include "libavutil/spherical.h"

  32. #include "libavutil/stereo3d.h"

  33. 

  34. #include "avio.h"

  35. #include "internal.h"

  36. #include "dv.h"

  37. 

  38. /* isom.c */

  39. extern const AVCodecTag ff_mp4_obj_type[];

  40. extern const AVCodecTag ff_codec_movvideo_tags[];

  41. extern const AVCodecTag ff_codec_movaudio_tags[];

  42. extern const AVCodecTag ff_codec_movsubtitle_tags[];

  43. 

  44. int ff_mov_iso639_to_lang(const char lang[4], int mp4);

  45. int ff_mov_lang_to_iso639(unsigned code, char to[4]);

  46. 

  47. struct AVAESCTR;

  48. 

  49. /* the QuickTime file format is quite convoluted...

  50.  * it has lots of index tables, each indexing something in another one...

  51.  * Here we just use what is needed to read the chunks

  52.  */

  53. 

  54. typedef struct MOVStts {

  55.     unsigned int count;

  56.     int duration;

  57. } MOVStts;

  58. 

  59. typedef struct MOVStsc {

  60.     int first;

  61.     int count;

  62.     int id;

  63. } MOVStsc;

  64. 

  65. typedef struct MOVElst {

  66.     int64_t duration;

  67.     int64_t time;

  68.     float rate;

  69. } MOVElst;

  70. 

  71. typedef struct MOVDref {

  72.     uint32_t type;

  73.     char *path;

  74.     char *dir;

  75.     char volume[28];

  76.     char filename[64];

  77.     int16_t nlvl_to, nlvl_from;

  78. } MOVDref;

  79. 

  80. typedef struct MOVAtom {

  81.     uint32_t type;

  82.     int64_t size; /* total size (excluding the size and type fields) */

  83. } MOVAtom;

  84. 

  85. struct MOVParseTableEntry;

  86. 

  87. typedef struct MOVFragment {

  88.     unsigned track_id;

  89.     uint64_t base_data_offset;

  90.     uint64_t moof_offset;

  91.     uint64_t implicit_offset;

  92.     unsigned stsd_id;

  93.     unsigned duration;

  94.     unsigned size;

  95.     unsigned flags;

  96. } MOVFragment;

  97. 

  98. typedef struct MOVTrackExt {

  99.     unsigned track_id;

  100.     unsigned stsd_id;

  101.     unsigned duration;

  102.     unsigned size;

  103.     unsigned flags;

  104. } MOVTrackExt;

  105. 

  106. typedef struct MOVSbgp {

  107.     unsigned int count;

  108.     unsigned int index;

  109. } MOVSbgp;

  110. 

  111. typedef struct MOVFragmentStreamInfo {

  112.     int id;

  113.     int64_t sidx_pts;

  114.     int64_t first_tfra_pts;

  115.     int64_t tfdt_dts;

  116.     int index_entry;

  117. } MOVFragmentStreamInfo;

  118. 

  119. typedef struct MOVFragmentIndexItem {

  120.     int64_t moof_offset;

  121.     int headers_read;

  122.     int current;

  123.     int nb_stream_info;

  124.     MOVFragmentStreamInfo * stream_info;

  125. } MOVFragmentIndexItem;

  126. 

  127. typedef struct MOVFragmentIndex {

  128.     int allocated_size;

  129.     int complete;

  130.     int current;

  131.     int nb_items;

  132.     MOVFragmentIndexItem * item;

  133. } MOVFragmentIndex;

  134. 

  135. typedef struct MOVIndexRange {

  136.     int64_t start;

  137.     int64_t end;

  138. } MOVIndexRange;

  139. 

  140. typedef struct MOVStreamContext {

  141.     AVIOContext *pb;

  142.     int pb_is_copied;

  143.     int ffindex;          ///< AVStream index

  144.     int next_chunk;

  145.     unsigned int chunk_count;

  146.     int64_t *chunk_offsets;

  147.     unsigned int stts_count;

  148.     MOVStts *stts_data;

  149.     unsigned int ctts_count;

  150.     unsigned int ctts_allocated_size;

  151.     MOVStts *ctts_data;

  152.     unsigned int stsc_count;

  153.     MOVStsc *stsc_data;

  154.     unsigned int stsc_index;

  155.     int stsc_sample;

  156.     unsigned int stps_count;

  157.     unsigned *stps_data;  ///< partial sync sample for mpeg-2 open gop

  158.     MOVElst *elst_data;

  159.     unsigned int elst_count;

  160.     int ctts_index;

  161.     int ctts_sample;

  162.     unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom

  163.     unsigned int stsz_sample_size; ///< always contains sample size from stsz atom

  164.     unsigned int sample_count;

  165.     int *sample_sizes;

  166.     int keyframe_absent;

  167.     unsigned int keyframe_count;

  168.     int *keyframes;

  169.     int time_scale;

  170.     int64_t time_offset;  ///< time offset of the edit list entries

  171.     int current_sample;

  172.     int64_t current_index;

  173.     MOVIndexRange* index_ranges;

  174.     MOVIndexRange* current_index_range;

  175.     unsigned int bytes_per_frame;

  176.     unsigned int samples_per_frame;

  177.     int dv_audio_container;

  178.     int pseudo_stream_id; ///< -1 means demux all ids

  179.     int16_t audio_cid;    ///< stsd audio compression id

  180.     unsigned drefs_count;

  181.     MOVDref *drefs;

  182.     int dref_id;

  183.     int timecode_track;

  184.     int width;            ///< tkhd width

  185.     int height;           ///< tkhd height

  186.     int dts_shift;        ///< dts shift when ctts is negative

  187.     uint32_t palette[256];

  188.     int has_palette;

  189.     int64_t data_size;

  190.     uint32_t tmcd_flags;  ///< tmcd track flags

  191.     int64_t track_end;    ///< used for dts generation in fragmented movie files

  192.     int start_pad;        ///< amount of samples to skip due to enc-dec delay

  193.     unsigned int rap_group_count;

  194.     MOVSbgp *rap_group;

  195. 

  196.     int nb_frames_for_fps;

  197.     int64_t duration_for_fps;

  198. 

  199.     /** extradata array (and size) for multiple stsd */

  200.     uint8_t **extradata;

  201.     int *extradata_size;

  202.     int last_stsd_index;

  203.     int stsd_count;

  204. 

  205.     int32_t *display_matrix;

  206.     AVStereo3D *stereo3d;

  207.     AVSphericalMapping *spherical;

  208.     size_t spherical_size;

  209.     AVMasteringDisplayMetadata *mastering;

  210.     AVContentLightMetadata *coll;

  211.     size_t coll_size;

  212. 

  213.     uint32_t format;

  214. 

  215.     int has_sidx;  // If there is an sidx entry for this stream.

  216.     struct {

  217.         int use_subsamples;

  218.         uint8_t* auxiliary_info;

  219.         uint8_t* auxiliary_info_end;

  220.         uint8_t* auxiliary_info_pos;

  221.         uint8_t auxiliary_info_default_size;

  222.         uint8_t* auxiliary_info_sizes;

  223.         size_t auxiliary_info_sizes_count;

  224.         int64_t auxiliary_info_index;

  225.         struct AVAESCTR* aes_ctr;

  226.     } cenc;

  227. } MOVStreamContext;

  228. 

  229. typedef struct MOVContext {

  230.     const AVClass *class; ///< class for private options

  231.     AVFormatContext *fc;

  232.     int time_scale;

  233.     int64_t duration;     ///< duration of the longest track

  234.     int found_moov;       ///< 'moov' atom has been found

  235.     int found_mdat;       ///< 'mdat' atom has been found

  236.     int found_hdlr_mdta;  ///< 'hdlr' atom with type 'mdta' has been found

  237.     int trak_index;       ///< Index of the current 'trak'

  238.     char **meta_keys;

  239.     unsigned meta_keys_count;

  240.     DVDemuxContext *dv_demux;

  241.     AVFormatContext *dv_fctx;

  242.     int isom;             ///< 1 if file is ISO Media (mp4/3gp)

  243.     MOVFragment fragment; ///< current fragment in moof atom

  244.     MOVTrackExt *trex_data;

  245.     unsigned trex_count;

  246.     int itunes_metadata;  ///< metadata are itunes style

  247.     int handbrake_version;

  248.     int *chapter_tracks;

  249.     unsigned int nb_chapter_tracks;

  250.     int use_absolute_path;

  251.     int ignore_editlist;

  252.     int advanced_editlist;

  253.     int ignore_chapters;

  254.     int seek_individually;

  255.     int64_t next_root_atom; ///< offset of the next root atom

  256.     int export_all;

  257.     int export_xmp;

  258.     int *bitrates;          ///< bitrates read before streams creation

  259.     int bitrates_count;

  260.     int moov_retry;

  261.     int use_mfra_for;

  262.     int has_looked_for_mfra;

  263.     MOVFragmentIndex frag_index;

  264.     int atom_depth;

  265.     unsigned int aax_mode;  ///< 'aax' file has been detected

  266.     uint8_t file_key[20];

  267.     uint8_t file_iv[20];

  268.     void *activation_bytes;

  269.     int activation_bytes_size;

  270.     void *audible_fixed_key;

  271.     int audible_fixed_key_size;

  272.     struct AVAES *aes_decrypt;

  273.     uint8_t *decryption_key;

  274.     int decryption_key_len;

  275.     int enable_drefs;

  276.     int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd

  277. } MOVContext;

  278. 

  279. int ff_mp4_read_descr_len(AVIOContext *pb);

  280. int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);

  281. int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);

  282. void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);

  283. 

  284. #define MP4ODescrTag                    0x01

  285. #define MP4IODescrTag                   0x02

  286. #define MP4ESDescrTag                   0x03

  287. #define MP4DecConfigDescrTag            0x04

  288. #define MP4DecSpecificDescrTag          0x05

  289. #define MP4SLDescrTag                   0x06

  290. 

  291. #define MOV_TFHD_BASE_DATA_OFFSET       0x01

  292. #define MOV_TFHD_STSD_ID                0x02

  293. #define MOV_TFHD_DEFAULT_DURATION       0x08

  294. #define MOV_TFHD_DEFAULT_SIZE           0x10

  295. #define MOV_TFHD_DEFAULT_FLAGS          0x20

  296. #define MOV_TFHD_DURATION_IS_EMPTY  0x010000

  297. #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000

  298. 

  299. #define MOV_TRUN_DATA_OFFSET            0x01

  300. #define MOV_TRUN_FIRST_SAMPLE_FLAGS     0x04

  301. #define MOV_TRUN_SAMPLE_DURATION       0x100

  302. #define MOV_TRUN_SAMPLE_SIZE           0x200

  303. #define MOV_TRUN_SAMPLE_FLAGS          0x400

  304. #define MOV_TRUN_SAMPLE_CTS            0x800

  305. 

  306. #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff

  307. #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC               0x00010000

  308. #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK              0x000e0000

  309. #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK           0x00300000

  310. #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK             0x00c00000

  311. #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK              0x03000000

  312. 

  313. #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO                0x02000000

  314. #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES               0x01000000

  315. 

  316. #define MOV_TKHD_FLAG_ENABLED       0x0001

  317. #define MOV_TKHD_FLAG_IN_MOVIE      0x0002

  318. #define MOV_TKHD_FLAG_IN_PREVIEW    0x0004

  319. #define MOV_TKHD_FLAG_IN_POSTER     0x0008

  320. 

  321. #define MOV_SAMPLE_DEPENDENCY_UNKNOWN 0x0

  322. #define MOV_SAMPLE_DEPENDENCY_YES     0x1

  323. #define MOV_SAMPLE_DEPENDENCY_NO      0x2

  324. 

  325. 

  326. #define TAG_IS_AVCI(tag)                    \

  327.     ((tag) == MKTAG('a', 'i', '5', 'p') ||  \

  328.      (tag) == MKTAG('a', 'i', '5', 'q') ||  \

  329.      (tag) == MKTAG('a', 'i', '5', '2') ||  \

  330.      (tag) == MKTAG('a', 'i', '5', '3') ||  \

  331.      (tag) == MKTAG('a', 'i', '5', '5') ||  \

  332.      (tag) == MKTAG('a', 'i', '5', '6') ||  \

  333.      (tag) == MKTAG('a', 'i', '1', 'p') ||  \

  334.      (tag) == MKTAG('a', 'i', '1', 'q') ||  \

  335.      (tag) == MKTAG('a', 'i', '1', '2') ||  \

  336.      (tag) == MKTAG('a', 'i', '1', '3') ||  \

  337.      (tag) == MKTAG('a', 'i', '1', '5') ||  \

  338.      (tag) == MKTAG('a', 'i', '1', '6') ||  \

  339.      (tag) == MKTAG('a', 'i', 'v', 'x') ||  \

  340.      (tag) == MKTAG('A', 'V', 'i', 'n'))

  341. 

  342. 

  343. int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb);

  344. 

  345. int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);

  346. void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);

  347. 

  348. #define FF_MOV_FLAG_MFRA_AUTO -1

  349. #define FF_MOV_FLAG_MFRA_DTS 1

  350. #define FF_MOV_FLAG_MFRA_PTS 2

  351. 

  352. /**

  353.  * Compute codec id for 'lpcm' tag.

  354.  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.

  355.  */

  356. static inline enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags)

  357. {

  358.     /* lpcm flags:

  359.      * 0x1 = float

  360.      * 0x2 = big-endian

  361.      * 0x4 = signed

  362.      */

  363.     return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0);

  364. }

  365. 

  366. #endif /* AVFORMAT_ISOM_H */