wp-includes/ID3/module.audio-video.matroska.php
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<?php ///////////////////////////////////////////////////////////////// /// getID3() by James Heinrich <info@getid3.org> // // available at https://github.com/JamesHeinrich/getID3 // // or https://www.getid3.org // // or http://getid3.sourceforge.net // // see readme.txt for more details // ///////////////////////////////////////////////////////////////// // // // module.audio-video.matriska.php // // module for analyzing Matroska containers // // dependencies: NONE // // /// ///////////////////////////////////////////////////////////////// if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers exit; } define('EBML_ID_CHAPTERS', 0x0043A770); // [10][43][A7][70] -- A system to define basic menus and partition data. For more detailed information, look at the Chapters Explanation. define('EBML_ID_SEEKHEAD', 0x014D9B74); // [11][4D][9B][74] -- Contains the position of other level 1 elements. define('EBML_ID_TAGS', 0x0254C367); // [12][54][C3][67] -- Element containing elements specific to Tracks/Chapters. A list of valid tags can be found <http://www.matroska.org/technical/specs/tagging/index.html>. define('EBML_ID_INFO', 0x0549A966); // [15][49][A9][66] -- Contains miscellaneous general information and statistics on the file. define('EBML_ID_TRACKS', 0x0654AE6B); // [16][54][AE][6B] -- A top-level block of information with many tracks described. define('EBML_ID_SEGMENT', 0x08538067); // [18][53][80][67] -- This element contains all other top-level (level 1) elements. Typically a Matroska file is composed of 1 segment. define('EBML_ID_ATTACHMENTS', 0x0941A469); // [19][41][A4][69] -- Contain attached files. define('EBML_ID_EBML', 0x0A45DFA3); // [1A][45][DF][A3] -- Set the EBML characteristics of the data to follow. Each EBML document has to start with this. define('EBML_ID_CUES', 0x0C53BB6B); // [1C][53][BB][6B] -- A top-level element to speed seeking access. All entries are local to the segment. define('EBML_ID_CLUSTER', 0x0F43B675); // [1F][43][B6][75] -- The lower level element containing the (monolithic) Block structure. define('EBML_ID_LANGUAGE', 0x02B59C); // [22][B5][9C] -- Specifies the language of the track in the Matroska languages form. define('EBML_ID_TRACKTIMECODESCALE', 0x03314F); // [23][31][4F] -- The scale to apply on this track to work at normal speed in relation with other tracks (mostly used to adjust video speed when the audio length differs). define('EBML_ID_DEFAULTDURATION', 0x03E383); // [23][E3][83] -- Number of nanoseconds (i.e. not scaled) per frame. define('EBML_ID_CODECNAME', 0x058688); // [25][86][88] -- A human-readable string specifying the codec. define('EBML_ID_CODECDOWNLOADURL', 0x06B240); // [26][B2][40] -- A URL to download about the codec used. define('EBML_ID_TIMECODESCALE', 0x0AD7B1); // [2A][D7][B1] -- Timecode scale in nanoseconds (1.000.000 means all timecodes in the segment are expressed in milliseconds). define('EBML_ID_COLOURSPACE', 0x0EB524); // [2E][B5][24] -- Same value as in AVI (32 bits). define('EBML_ID_GAMMAVALUE', 0x0FB523); // [2F][B5][23] -- Gamma Value. define('EBML_ID_CODECSETTINGS', 0x1A9697); // [3A][96][97] -- A string describing the encoding setting used. define('EBML_ID_CODECINFOURL', 0x1B4040); // [3B][40][40] -- A URL to find information about the codec used. define('EBML_ID_PREVFILENAME', 0x1C83AB); // [3C][83][AB] -- An escaped filename corresponding to the previous segment. define('EBML_ID_PREVUID', 0x1CB923); // [3C][B9][23] -- A unique ID to identify the previous chained segment (128 bits). define('EBML_ID_NEXTFILENAME', 0x1E83BB); // [3E][83][BB] -- An escaped filename corresponding to the next segment. define('EBML_ID_NEXTUID', 0x1EB923); // [3E][B9][23] -- A unique ID to identify the next chained segment (128 bits). define('EBML_ID_CONTENTCOMPALGO', 0x0254); // [42][54] -- The compression algorithm used. Algorithms that have been specified so far are: define('EBML_ID_CONTENTCOMPSETTINGS', 0x0255); // [42][55] -- Settings that might be needed by the decompressor. For Header Stripping (ContentCompAlgo=3), the bytes that were removed from the beggining of each frames of the track. define('EBML_ID_DOCTYPE', 0x0282); // [42][82] -- A string that describes the type of document that follows this EBML header ('matroska' in our case). define('EBML_ID_DOCTYPEREADVERSION', 0x0285); // [42][85] -- The minimum DocType version an interpreter has to support to read this file. define('EBML_ID_EBMLVERSION', 0x0286); // [42][86] -- The version of EBML parser used to create the file. define('EBML_ID_DOCTYPEVERSION', 0x0287); // [42][87] -- The version of DocType interpreter used to create the file. define('EBML_ID_EBMLMAXIDLENGTH', 0x02F2); // [42][F2] -- The maximum length of the IDs you'll find in this file (4 or less in Matroska). define('EBML_ID_EBMLMAXSIZELENGTH', 0x02F3); // [42][F3] -- The maximum length of the sizes you'll find in this file (8 or less in Matroska). This does not override the element size indicated at the beginning of an element. Elements that have an indicated size which is larger than what is allowed by EBMLMaxSizeLength shall be considered invalid. define('EBML_ID_EBMLREADVERSION', 0x02F7); // [42][F7] -- The minimum EBML version a parser has to support to read this file. define('EBML_ID_CHAPLANGUAGE', 0x037C); // [43][7C] -- The languages corresponding to the string, in the bibliographic ISO-639-2 form. define('EBML_ID_CHAPCOUNTRY', 0x037E); // [43][7E] -- The countries corresponding to the string, same 2 octets as in Internet domains. define('EBML_ID_SEGMENTFAMILY', 0x0444); // [44][44] -- A randomly generated unique ID that all segments related to each other must use (128 bits). define('EBML_ID_DATEUTC', 0x0461); // [44][61] -- Date of the origin of timecode (value 0), i.e. production date. define('EBML_ID_TAGLANGUAGE', 0x047A); // [44][7A] -- Specifies the language of the tag specified, in the Matroska languages form. define('EBML_ID_TAGDEFAULT', 0x0484); // [44][84] -- Indication to know if this is the default/original language to use for the given tag. define('EBML_ID_TAGBINARY', 0x0485); // [44][85] -- The values of the Tag if it is binary. Note that this cannot be used in the same SimpleTag as TagString. define('EBML_ID_TAGSTRING', 0x0487); // [44][87] -- The value of the Tag. define('EBML_ID_DURATION', 0x0489); // [44][89] -- Duration of the segment (based on TimecodeScale). define('EBML_ID_CHAPPROCESSPRIVATE', 0x050D); // [45][0D] -- Some optional data attached to the ChapProcessCodecID information. For ChapProcessCodecID = 1, it is the "DVD level" equivalent. define('EBML_ID_CHAPTERFLAGENABLED', 0x0598); // [45][98] -- Specify wether the chapter is enabled. It can be enabled/disabled by a Control Track. When disabled, the movie should skip all the content between the TimeStart and TimeEnd of this chapter. define('EBML_ID_TAGNAME', 0x05A3); // [45][A3] -- The name of the Tag that is going to be stored. define('EBML_ID_EDITIONENTRY', 0x05B9); // [45][B9] -- Contains all information about a segment edition. define('EBML_ID_EDITIONUID', 0x05BC); // [45][BC] -- A unique ID to identify the edition. It's useful for tagging an edition. define('EBML_ID_EDITIONFLAGHIDDEN', 0x05BD); // [45][BD] -- If an edition is hidden (1), it should not be available to the user interface (but still to Control Tracks). define('EBML_ID_EDITIONFLAGDEFAULT', 0x05DB); // [45][DB] -- If a flag is set (1) the edition should be used as the default one. define('EBML_ID_EDITIONFLAGORDERED', 0x05DD); // [45][DD] -- Specify if the chapters can be defined multiple times and the order to play them is enforced. define('EBML_ID_FILEDATA', 0x065C); // [46][5C] -- The data of the file. define('EBML_ID_FILEMIMETYPE', 0x0660); // [46][60] -- MIME type of the file. define('EBML_ID_FILENAME', 0x066E); // [46][6E] -- Filename of the attached file. define('EBML_ID_FILEREFERRAL', 0x0675); // [46][75] -- A binary value that a track/codec can refer to when the attachment is needed. define('EBML_ID_FILEDESCRIPTION', 0x067E); // [46][7E] -- A human-friendly name for the attached file. define('EBML_ID_FILEUID', 0x06AE); // [46][AE] -- Unique ID representing the file, as random as possible. define('EBML_ID_CONTENTENCALGO', 0x07E1); // [47][E1] -- The encryption algorithm used. The value '0' means that the contents have not been encrypted but only signed. Predefined values: define('EBML_ID_CONTENTENCKEYID', 0x07E2); // [47][E2] -- For public key algorithms this is the ID of the public key the data was encrypted with. define('EBML_ID_CONTENTSIGNATURE', 0x07E3); // [47][E3] -- A cryptographic signature of the contents. define('EBML_ID_CONTENTSIGKEYID', 0x07E4); // [47][E4] -- This is the ID of the private key the data was signed with. define('EBML_ID_CONTENTSIGALGO', 0x07E5); // [47][E5] -- The algorithm used for the signature. A value of '0' means that the contents have not been signed but only encrypted. Predefined values: define('EBML_ID_CONTENTSIGHASHALGO', 0x07E6); // [47][E6] -- The hash algorithm used for the signature. A value of '0' means that the contents have not been signed but only encrypted. Predefined values: define('EBML_ID_MUXINGAPP', 0x0D80); // [4D][80] -- Muxing application or library ("libmatroska-0.4.3"). define('EBML_ID_SEEK', 0x0DBB); // [4D][BB] -- Contains a single seek entry to an EBML element. define('EBML_ID_CONTENTENCODINGORDER', 0x1031); // [50][31] -- Tells when this modification was used during encoding/muxing starting with 0 and counting upwards. The decoder/demuxer has to start with the highest order number it finds and work its way down. This value has to be unique over all ContentEncodingOrder elements in the segment. define('EBML_ID_CONTENTENCODINGSCOPE', 0x1032); // [50][32] -- A bit field that describes which elements have been modified in this way. Values (big endian) can be OR'ed. Possible values: define('EBML_ID_CONTENTENCODINGTYPE', 0x1033); // [50][33] -- A value describing what kind of transformation has been done. Possible values: define('EBML_ID_CONTENTCOMPRESSION', 0x1034); // [50][34] -- Settings describing the compression used. Must be present if the value of ContentEncodingType is 0 and absent otherwise. Each block must be decompressable even if no previous block is available in order not to prevent seeking. define('EBML_ID_CONTENTENCRYPTION', 0x1035); // [50][35] -- Settings describing the encryption used. Must be present if the value of ContentEncodingType is 1 and absent otherwise. define('EBML_ID_CUEREFNUMBER', 0x135F); // [53][5F] -- Number of the referenced Block of Track X in the specified Cluster. define('EBML_ID_NAME', 0x136E); // [53][6E] -- A human-readable track name. define('EBML_ID_CUEBLOCKNUMBER', 0x1378); // [53][78] -- Number of the Block in the specified Cluster. define('EBML_ID_TRACKOFFSET', 0x137F); // [53][7F] -- A value to add to the Block's Timecode. This can be used to adjust the playback offset of a track. define('EBML_ID_SEEKID', 0x13AB); // [53][AB] -- The binary ID corresponding to the element name. define('EBML_ID_SEEKPOSITION', 0x13AC); // [53][AC] -- The position of the element in the segment in octets (0 = first level 1 element). define('EBML_ID_STEREOMODE', 0x13B8); // [53][B8] -- Stereo-3D video mode. define('EBML_ID_OLDSTEREOMODE', 0x13B9); // [53][B9] -- Bogus StereoMode value used in old versions of libmatroska. DO NOT USE. (0: mono, 1: right eye, 2: left eye, 3: both eyes). define('EBML_ID_PIXELCROPBOTTOM', 0x14AA); // [54][AA] -- The number of video pixels to remove at the bottom of the image (for HDTV content). define('EBML_ID_DISPLAYWIDTH', 0x14B0); // [54][B0] -- Width of the video frames to display. define('EBML_ID_DISPLAYUNIT', 0x14B2); // [54][B2] -- Type of the unit for DisplayWidth/Height (0: pixels, 1: centimeters, 2: inches). define('EBML_ID_ASPECTRATIOTYPE', 0x14B3); // [54][B3] -- Specify the possible modifications to the aspect ratio (0: free resizing, 1: keep aspect ratio, 2: fixed).