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module.audio-video.matroska.php @ 9130

Last change on this file since 9130 was 3544, checked in by vdigital, 15 years ago
Change: getid3 upgraded to -> 1.7.9
Property svn:eol-style set to `LF` Property svn:keywords set to `Author Date Id Revision`
File size: 113.7 KB

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1	<?php
2	/////////////////////////////////////////////////////////////////
3	/// getID3() by James Heinrich <info@getid3.org> //
4	// available at http://getid3.sourceforge.net //
5	// or http://www.getid3.org //
6	/////////////////////////////////////////////////////////////////
7	// See readme.txt for more details //
8	/////////////////////////////////////////////////////////////////
9	// //
10	// module.audio-video.matriska.php //
11	// module for analyzing Matroska containers //
12	// dependencies: NONE //
13	// ///
14	/////////////////////////////////////////////////////////////////
15
16
17	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.
18	define('EBML_ID_SEEKHEAD', 0x014D9B74); // [11][4D][9B][74] -- Contains the position of other level 1 elements.
19	define('EBML_ID_TAGS', 0x0254C367); // [12][54][C3][67] -- Element containing elements specific to Tracks/Chapters. A list of valid tags can be found here.
20	define('EBML_ID_INFO', 0x0549A966); // [15][49][A9][66] -- Contains miscellaneous general information and statistics on the file.
21	define('EBML_ID_TRACKS', 0x0654AE6B); // [16][54][AE][6B] -- A top-level block of information with many tracks described.
22	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.
23	define('EBML_ID_ATTACHMENTS', 0x0941A469); // [19][41][A4][69] -- Contain attached files.
24	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.
25	define('EBML_ID_CUES', 0x0C53BB6B); // [1C][53][BB][6B] -- A top-level element to speed seeking access. All entries are local to the segment.
26	define('EBML_ID_CLUSTER', 0x0F43B675); // [1F][43][B6][75] -- The lower level element containing the (monolithic) Block structure.
27	define('EBML_ID_LANGUAGE', 0x02B59C); // [22][B5][9C] -- Specifies the language of the track in the Matroska languages form.
28	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).
29	define('EBML_ID_DEFAULTDURATION', 0x03E383); // [23][E3][83] -- Number of nanoseconds (i.e. not scaled) per frame.
30	define('EBML_ID_CODECNAME', 0x058688); // [25][86][88] -- A human-readable string specifying the codec.
31	define('EBML_ID_CODECDOWNLOADURL', 0x06B240); // [26][B2][40] -- A URL to download about the codec used.
32	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).
33	define('EBML_ID_COLOURSPACE', 0x0EB524); // [2E][B5][24] -- Same value as in AVI (32 bits).
34	define('EBML_ID_GAMMAVALUE', 0x0FB523); // [2F][B5][23] -- Gamma Value.
35	define('EBML_ID_CODECSETTINGS', 0x1A9697); // [3A][96][97] -- A string describing the encoding setting used.
36	define('EBML_ID_CODECINFOURL', 0x1B4040); // [3B][40][40] -- A URL to find information about the codec used.
37	define('EBML_ID_PREVFILENAME', 0x1C83AB); // [3C][83][AB] -- An escaped filename corresponding to the previous segment.
38	define('EBML_ID_PREVUID', 0x1CB923); // [3C][B9][23] -- A unique ID to identify the previous chained segment (128 bits).
39	define('EBML_ID_NEXTFILENAME', 0x1E83BB); // [3E][83][BB] -- An escaped filename corresponding to the next segment.
40	define('EBML_ID_NEXTUID', 0x1EB923); // [3E][B9][23] -- A unique ID to identify the next chained segment (128 bits).
41	define('EBML_ID_CONTENTCOMPALGO', 0x0254); // [42][54] -- The compression algorithm used. Algorithms that have been specified so far are:
42	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.
43	define('EBML_ID_DOCTYPE', 0x0282); // [42][82] -- A string that describes the type of document that follows this EBML header ('matroska' in our case).
44	define('EBML_ID_DOCTYPEREADVERSION', 0x0285); // [42][85] -- The minimum DocType version an interpreter has to support to read this file.
45	define('EBML_ID_EBMLVERSION', 0x0286); // [42][86] -- The version of EBML parser used to create the file.
46	define('EBML_ID_DOCTYPEVERSION', 0x0287); // [42][87] -- The version of DocType interpreter used to create the file.
47	define('EBML_ID_EBMLMAXIDLENGTH', 0x02F2); // [42][F2] -- The maximum length of the IDs you'll find in this file (4 or less in Matroska).
48	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.
49	define('EBML_ID_EBMLREADVERSION', 0x02F7); // [42][F7] -- The minimum EBML version a parser has to support to read this file.
50	define('EBML_ID_CHAPLANGUAGE', 0x037C); // [43][7C] -- The languages corresponding to the string, in the bibliographic ISO-639-2 form.
51	define('EBML_ID_CHAPCOUNTRY', 0x037E); // [43][7E] -- The countries corresponding to the string, same 2 octets as in Internet domains.
52	define('EBML_ID_SEGMENTFAMILY', 0x0444); // [44][44] -- A randomly generated unique ID that all segments related to each other must use (128 bits).
53	define('EBML_ID_DATEUTC', 0x0461); // [44][61] -- Date of the origin of timecode (value 0), i.e. production date.
54	define('EBML_ID_TAGLANGUAGE', 0x047A); // [44][7A] -- Specifies the language of the tag specified, in the Matroska languages form.
55	define('EBML_ID_TAGDEFAULT', 0x0484); // [44][84] -- Indication to know if this is the default/original language to use for the given tag.
56	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.
57	define('EBML_ID_TAGSTRING', 0x0487); // [44][87] -- The value of the Tag.
58	define('EBML_ID_DURATION', 0x0489); // [44][89] -- Duration of the segment (based on TimecodeScale).
59	define('EBML_ID_CHAPPROCESSPRIVATE', 0x050D); // [45][0D] -- Some optional data attached to the ChapProcessCodecID information. For ChapProcessCodecID = 1, it is the "DVD level" equivalent.
60	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.
61	define('EBML_ID_TAGNAME', 0x05A3); // [45][A3] -- The name of the Tag that is going to be stored.
62	define('EBML_ID_EDITIONENTRY', 0x05B9); // [45][B9] -- Contains all information about a segment edition.
63	define('EBML_ID_EDITIONUID', 0x05BC); // [45][BC] -- A unique ID to identify the edition. It's useful for tagging an edition.
64	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).
65	define('EBML_ID_EDITIONFLAGDEFAULT', 0x05DB); // [45][DB] -- If a flag is set (1) the edition should be used as the default one.
66	define('EBML_ID_EDITIONFLAGORDERED', 0x05DD); // [45][DD] -- Specify if the chapters can be defined multiple times and the order to play them is enforced.
67	define('EBML_ID_FILEDATA', 0x065C); // [46][5C] -- The data of the file.
68	define('EBML_ID_FILEMIMETYPE', 0x0660); // [46][60] -- MIME type of the file.
69	define('EBML_ID_FILENAME', 0x066E); // [46][6E] -- Filename of the attached file.
70	define('EBML_ID_FILEREFERRAL', 0x0675); // [46][75] -- A binary value that a track/codec can refer to when the attachment is needed.
71	define('EBML_ID_FILEDESCRIPTION', 0x067E); // [46][7E] -- A human-friendly name for the attached file.
72	define('EBML_ID_FILEUID', 0x06AE); // [46][AE] -- Unique ID representing the file, as random as possible.
73	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:
74	define('EBML_ID_CONTENTENCKEYID', 0x07E2); // [47][E2] -- For public key algorithms this is the ID of the public key the the data was encrypted with.
75	define('EBML_ID_CONTENTSIGNATURE', 0x07E3); // [47][E3] -- A cryptographic signature of the contents.
76	define('EBML_ID_CONTENTSIGKEYID', 0x07E4); // [47][E4] -- This is the ID of the private key the data was signed with.
77	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:
78	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:
79	define('EBML_ID_MUXINGAPP', 0x0D80); // [4D][80] -- Muxing application or library ("libmatroska-0.4.3").
80	define('EBML_ID_SEEK', 0x0DBB); // [4D][BB] -- Contains a single seek entry to an EBML element.
81	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.
82	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:
83	define('EBML_ID_CONTENTENCODINGTYPE', 0x1033); // [50][33] -- A value describing what kind of transformation has been done. Possible values:
84	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.
85	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.
86	define('EBML_ID_CUEREFNUMBER', 0x135F); // [53][5F] -- Number of the referenced Block of Track X in the specified Cluster.
87	define('EBML_ID_NAME', 0x136E); // [53][6E] -- A human-readable track name.
88	define('EBML_ID_CUEBLOCKNUMBER', 0x1378); // [53][78] -- Number of the Block in the specified Cluster.
89	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.
90	define('EBML_ID_SEEKID', 0x13AB); // [53][AB] -- The binary ID corresponding to the element name.
91	define('EBML_ID_SEEKPOSITION', 0x13AC); // [53][AC] -- The position of the element in the segment in octets (0 = first level 1 element).
92	define('EBML_ID_STEREOMODE', 0x13B8); // [53][B8] -- Stereo-3D video mode on 2 bits (0: mono, 1: right eye, 2: left eye, 3: both eyes).
93	define('EBML_ID_PIXELCROPBOTTOM', 0x14AA); // [54][AA] -- The number of video pixels to remove at the bottom of the image (for HDTV content).
94	define('EBML_ID_DISPLAYWIDTH', 0x14B0); // [54][B0] -- Width of the video frames to display.
95	define('EBML_ID_DISPLAYUNIT', 0x14B2); // [54][B2] -- Type of the unit for DisplayWidth/Height (0: pixels, 1: centimeters, 2: inches).
96	define('EBML_ID_ASPECTRATIOTYPE', 0x14B3); // [54][B3] -- Specify the possible modifications to the aspect ratio (0: free resizing, 1: keep aspect ratio, 2: fixed).
97	define('EBML_ID_DISPLAYHEIGHT', 0x14BA); // [54][BA] -- Height of the video frames to display.
98	define('EBML_ID_PIXELCROPTOP', 0x14BB); // [54][BB] -- The number of video pixels to remove at the top of the image.
99	define('EBML_ID_PIXELCROPLEFT', 0x14CC); // [54][CC] -- The number of video pixels to remove on the left of the image.
100	define('EBML_ID_PIXELCROPRIGHT', 0x14DD); // [54][DD] -- The number of video pixels to remove on the right of the image.
101	define('EBML_ID_FLAGFORCED', 0x15AA); // [55][AA] -- Set if that track MUST be used during playback. There can be many forced track for a kind (audio, video or subs), the player should select the one which language matches the user preference or the default + forced track. Overlay MAY happen between a forced and non-forced track of the same kind.
102	define('EBML_ID_MAXBLOCKADDITIONID', 0x15EE); // [55][EE] -- The maximum value of BlockAddID. A value 0 means there is no BlockAdditions for this track.
103	define('EBML_ID_WRITINGAPP', 0x1741); // [57][41] -- Writing application ("mkvmerge-0.3.3").
104	define('EBML_ID_CLUSTERSILENTTRACKS', 0x1854); // [58][54] -- The list of tracks that are not used in that part of the stream. It is useful when using overlay tracks on seeking. Then you should decide what track to use.
105	define('EBML_ID_CLUSTERSILENTTRACKNUMBER', 0x18D7); // [58][D7] -- One of the track number that are not used from now on in the stream. It could change later if not specified as silent in a further Cluster.
106	define('EBML_ID_ATTACHEDFILE', 0x21A7); // [61][A7] -- An attached file.
107	define('EBML_ID_CONTENTENCODING', 0x2240); // [62][40] -- Settings for one content encoding like compression or encryption.
108	define('EBML_ID_BITDEPTH', 0x2264); // [62][64] -- Bits per sample, mostly used for PCM.
109	define('EBML_ID_CODECPRIVATE', 0x23A2); // [63][A2] -- Private data only known to the codec.
110	define('EBML_ID_TARGETS', 0x23C0); // [63][C0] -- Contain all UIDs where the specified meta data apply. It is void to describe everything in the segment.
111	define('EBML_ID_CHAPTERPHYSICALEQUIV', 0x23C3); // [63][C3] -- Specify the physical equivalent of this ChapterAtom like "DVD" (60) or "SIDE" (50), see complete list of values.
112	define('EBML_ID_TAGCHAPTERUID', 0x23C4); // [63][C4] -- A unique ID to identify the Chapter(s) the tags belong to. If the value is 0 at this level, the tags apply to all chapters in the Segment.
113	define('EBML_ID_TAGTRACKUID', 0x23C5); // [63][C5] -- A unique ID to identify the Track(s) the tags belong to. If the value is 0 at this level, the tags apply to all tracks in the Segment.
114	define('EBML_ID_ATTACHMENTUID', 0x23C6); // [63][C6] -- A unique ID to identify the Attachment(s) the tags belong to. If the value is 0 at this level, the tags apply to all the attachments in the Segment.
115	define('EBML_ID_TAGEDITIONUID', 0x23C9); // [63][C9] -- A unique ID to identify the EditionEntry(s) the tags belong to. If the value is 0 at this level, the tags apply to all editions in the Segment.
116	define('EBML_ID_TARGETTYPE', 0x23CA); // [63][CA] -- An informational string that can be used to display the logical level of the target like "ALBUM", "TRACK", "MOVIE", "CHAPTER", etc (see TargetType).
117	define('EBML_ID_TRACKTRANSLATE', 0x2624); // [66][24] -- The track identification for the given Chapter Codec.
118	define('EBML_ID_TRACKTRANSLATETRACKID', 0x26A5); // [66][A5] -- The binary value used to represent this track in the chapter codec data. The format depends on the ChapProcessCodecID used.
119	define('EBML_ID_TRACKTRANSLATECODEC', 0x26BF); // [66][BF] -- The chapter codec using this ID (0: Matroska Script, 1: DVD-menu).
120	define('EBML_ID_TRACKTRANSLATEEDITIONUID', 0x26FC); // [66][FC] -- Specify an edition UID on which this translation applies. When not specified, it means for all editions found in the segment.
121	define('EBML_ID_SIMPLETAG', 0x27C8); // [67][C8] -- Contains general information about the target.
122	define('EBML_ID_TARGETTYPEVALUE', 0x28CA); // [68][CA] -- A number to indicate the logical level of the target (see TargetType).
123	define('EBML_ID_CHAPPROCESSCOMMAND', 0x2911); // [69][11] -- Contains all the commands associated to the Atom.
124	define('EBML_ID_CHAPPROCESSTIME', 0x2922); // [69][22] -- Defines when the process command should be handled (0: during the whole chapter, 1: before starting playback, 2: after playback of the chapter).
125	define('EBML_ID_CHAPTERTRANSLATE', 0x2924); // [69][24] -- A tuple of corresponding ID used by chapter codecs to represent this segment.
126	define('EBML_ID_CHAPPROCESSDATA', 0x2933); // [69][33] -- Contains the command information. The data should be interpreted depending on the ChapProcessCodecID value. For ChapProcessCodecID = 1, the data correspond to the binary DVD cell pre/post commands.
127	define('EBML_ID_CHAPPROCESS', 0x2944); // [69][44] -- Contains all the commands associated to the Atom.
128	define('EBML_ID_CHAPPROCESSCODECID', 0x2955); // [69][55] -- Contains the type of the codec used for the processing. A value of 0 means native Matroska processing (to be defined), a value of 1 means the DVD command set is used. More codec IDs can be added later.
129	define('EBML_ID_CHAPTERTRANSLATEID', 0x29A5); // [69][A5] -- The binary value used to represent this segment in the chapter codec data. The format depends on the ChapProcessCodecID used.
130	define('EBML_ID_CHAPTERTRANSLATECODEC', 0x29BF); // [69][BF] -- The chapter codec using this ID (0: Matroska Script, 1: DVD-menu).
131	define('EBML_ID_CHAPTERTRANSLATEEDITIONUID', 0x29FC); // [69][FC] -- Specify an edition UID on which this correspondance applies. When not specified, it means for all editions found in the segment.
132	define('EBML_ID_CONTENTENCODINGS', 0x2D80); // [6D][80] -- Settings for several content encoding mechanisms like compression or encryption.
133	define('EBML_ID_MINCACHE', 0x2DE7); // [6D][E7] -- The minimum number of frames a player should be able to cache during playback. If set to 0, the reference pseudo-cache system is not used.
134	define('EBML_ID_MAXCACHE', 0x2DF8); // [6D][F8] -- The maximum cache size required to store referenced frames in and the current frame. 0 means no cache is needed.
135	define('EBML_ID_CHAPTERSEGMENTUID', 0x2E67); // [6E][67] -- A segment to play in place of this chapter. Edition ChapterSegmentEditionUID should be used for this segment, otherwise no edition is used.
136	define('EBML_ID_CHAPTERSEGMENTEDITIONUID', 0x2EBC); // [6E][BC] -- The edition to play from the segment linked in ChapterSegmentUID.
137	define('EBML_ID_TRACKOVERLAY', 0x2FAB); // [6F][AB] -- Specify that this track is an overlay track for the Track specified (in the u-integer). That means when this track has a gap (see SilentTracks) the overlay track should be used instead. The order of multiple TrackOverlay matters, the first one is the one that should be used. If not found it should be the second, etc.
138	define('EBML_ID_TAG', 0x3373); // [73][73] -- Element containing elements specific to Tracks/Chapters.
139	define('EBML_ID_SEGMENTFILENAME', 0x3384); // [73][84] -- A filename corresponding to this segment.
140	define('EBML_ID_SEGMENTUID', 0x33A4); // [73][A4] -- A randomly generated unique ID to identify the current segment between many others (128 bits).
141	define('EBML_ID_CHAPTERUID', 0x33C4); // [73][C4] -- A unique ID to identify the Chapter.
142	define('EBML_ID_TRACKUID', 0x33C5); // [73][C5] -- A unique ID to identify the Track. This should be kept the same when making a direct stream copy of the Track to another file.
143	define('EBML_ID_ATTACHMENTLINK', 0x3446); // [74][46] -- The UID of an attachment that is used by this codec.
144	define('EBML_ID_CLUSTERBLOCKADDITIONS', 0x35A1); // [75][A1] -- Contain additional blocks to complete the main one. An EBML parser that has no knowledge of the Block structure could still see and use/skip these data.
145	define('EBML_ID_CHANNELPOSITIONS', 0x347B); // [7D][7B] -- Table of horizontal angles for each successive channel, see appendix.
146	define('EBML_ID_OUTPUTSAMPLINGFREQUENCY', 0x38B5); // [78][B5] -- Real output sampling frequency in Hz (used for SBR techniques).
147	define('EBML_ID_TITLE', 0x3BA9); // [7B][A9] -- General name of the segment.
148	define('EBML_ID_CHAPTERDISPLAY', 0x00); // [80] -- Contains all possible strings to use for the chapter display.
149	define('EBML_ID_TRACKTYPE', 0x03); // [83] -- A set of track types coded on 8 bits (1: video, 2: audio, 3: complex, 0x10: logo, 0x11: subtitle, 0x12: buttons, 0x20: control).
150	define('EBML_ID_CHAPSTRING', 0x05); // [85] -- Contains the string to use as the chapter atom.
151	define('EBML_ID_CODECID', 0x06); // [86] -- An ID corresponding to the codec, see the codec page for more info.
152	define('EBML_ID_FLAGDEFAULT', 0x08); // [88] -- Set if that track (audio, video or subs) SHOULD be used if no language found matches the user preference.
153	define('EBML_ID_CHAPTERTRACKNUMBER', 0x09); // [89] -- UID of the Track to apply this chapter too. In the absense of a control track, choosing this chapter will select the listed Tracks and deselect unlisted tracks. Absense of this element indicates that the Chapter should be applied to any currently used Tracks.
154	define('EBML_ID_CLUSTERSLICES', 0x0E); // [8E] -- Contains slices description.
155	define('EBML_ID_CHAPTERTRACK', 0x0F); // [8F] -- List of tracks on which the chapter applies. If this element is not present, all tracks apply
156	define('EBML_ID_CHAPTERTIMESTART', 0x11); // [91] -- Timecode of the start of Chapter (not scaled).
157	define('EBML_ID_CHAPTERTIMEEND', 0x12); // [92] -- Timecode of the end of Chapter (timecode excluded, not scaled).
158	define('EBML_ID_CUEREFTIME', 0x16); // [96] -- Timecode of the referenced Block.
159	define('EBML_ID_CUEREFCLUSTER', 0x17); // [97] -- Position of the Cluster containing the referenced Block.
160	define('EBML_ID_CHAPTERFLAGHIDDEN', 0x18); // [98] -- If a chapter is hidden (1), it should not be available to the user interface (but still to Control Tracks).
161	define('EBML_ID_FLAGINTERLACED', 0x1A); // [9A] -- Set if the video is interlaced.
162	define('EBML_ID_CLUSTERBLOCKDURATION', 0x1B); // [9B] -- The duration of the Block (based on TimecodeScale). This element is mandatory when DefaultDuration is set for the track. When not written and with no DefaultDuration, the value is assumed to be the difference between the timecode of this Block and the timecode of the next Block in "display" order (not coding order). This element can be useful at the end of a Track (as there is not other Block available), or when there is a break in a track like for subtitle tracks.
163	define('EBML_ID_FLAGLACING', 0x1C); // [9C] -- Set if the track may contain blocks using lacing.
164	define('EBML_ID_CHANNELS', 0x1F); // [9F] -- Numbers of channels in the track.
165	define('EBML_ID_CLUSTERBLOCKGROUP', 0x20); // [A0] -- Basic container of information containing a single Block or BlockVirtual, and information specific to that Block/VirtualBlock.
166	define('EBML_ID_CLUSTERBLOCK', 0x21); // [A1] -- Block containing the actual data to be rendered and a timecode relative to the Cluster Timecode.
167	define('EBML_ID_CLUSTERBLOCKVIRTUAL', 0x22); // [A2] -- A Block with no data. It must be stored in the stream at the place the real Block should be in display order.
168	define('EBML_ID_CLUSTERSIMPLEBLOCK', 0x23); // [A3] -- Similar to Block but without all the extra information, mostly used to reduced overhead when no extra feature is needed.
169	define('EBML_ID_CLUSTERCODECSTATE', 0x24); // [A4] -- The new codec state to use. Data interpretation is private to the codec. This information should always be referenced by a seek entry.
170	define('EBML_ID_CLUSTERBLOCKADDITIONAL', 0x25); // [A5] -- Interpreted by the codec as it wishes (using the BlockAddID).
171	define('EBML_ID_CLUSTERBLOCKMORE', 0x26); // [A6] -- Contain the BlockAdditional and some parameters.
172	define('EBML_ID_CLUSTERPOSITION', 0x27); // [A7] -- Position of the Cluster in the segment (0 in live broadcast streams). It might help to resynchronise offset on damaged streams.
173	define('EBML_ID_CODECDECODEALL', 0x2A); // [AA] -- The codec can decode potentially damaged data.
174	define('EBML_ID_CLUSTERPREVSIZE', 0x2B); // [AB] -- Size of the previous Cluster, in octets. Can be useful for backward playing.
175	define('EBML_ID_TRACKENTRY', 0x2E); // [AE] -- Describes a track with all elements.
176	define('EBML_ID_CLUSTERENCRYPTEDBLOCK', 0x2F); // [AF] -- Similar to SimpleBlock but the data inside the Block are Transformed (encrypt and/or signed).
177	define('EBML_ID_PIXELWIDTH', 0x30); // [B0] -- Width of the encoded video frames in pixels.
178	define('EBML_ID_CUETIME', 0x33); // [B3] -- Absolute timecode according to the segment time base.
179	define('EBML_ID_SAMPLINGFREQUENCY', 0x35); // [B5] -- Sampling frequency in Hz.
180	define('EBML_ID_CHAPTERATOM', 0x36); // [B6] -- Contains the atom information to use as the chapter atom (apply to all tracks).
181	define('EBML_ID_CUETRACKPOSITIONS', 0x37); // [B7] -- Contain positions for different tracks corresponding to the timecode.
182	define('EBML_ID_FLAGENABLED', 0x39); // [B9] -- Set if the track is used.
183	define('EBML_ID_PIXELHEIGHT', 0x3A); // [BA] -- Height of the encoded video frames in pixels.
184	define('EBML_ID_CUEPOINT', 0x3B); // [BB] -- Contains all information relative to a seek point in the segment.
185	define('EBML_ID_CRC32', 0x3F); // [BF] -- The CRC is computed on all the data of the Master element it's in, regardless of its position. It's recommended to put the CRC value at the beggining of the Master element for easier reading. All level 1 elements should include a CRC-32.
186	define('EBML_ID_CLUSTERBLOCKADDITIONID', 0x4B); // [CB] -- The ID of the BlockAdditional element (0 is the main Block).
187	define('EBML_ID_CLUSTERLACENUMBER', 0x4C); // [CC] -- The reverse number of the frame in the lace (0 is the last frame, 1 is the next to last, etc). While there are a few files in the wild with this element, it is no longer in use and has been deprecated. Being able to interpret this element is not required for playback.
188	define('EBML_ID_CLUSTERFRAMENUMBER', 0x4D); // [CD] -- The number of the frame to generate from this lace with this delay (allow you to generate many frames from the same Block/Frame).
189	define('EBML_ID_CLUSTERDELAY', 0x4E); // [CE] -- The (scaled) delay to apply to the element.
190	define('EBML_ID_CLUSTERDURATION', 0x4F); // [CF] -- The (scaled) duration to apply to the element.
191	define('EBML_ID_TRACKNUMBER', 0x57); // [D7] -- The track number as used in the Block Header (using more than 127 tracks is not encouraged, though the design allows an unlimited number).
192	define('EBML_ID_CUEREFERENCE', 0x5B); // [DB] -- The Clusters containing the required referenced Blocks.
193	define('EBML_ID_VIDEO', 0x60); // [E0] -- Video settings.
194	define('EBML_ID_AUDIO', 0x61); // [E1] -- Audio settings.
195	define('EBML_ID_CLUSTERTIMESLICE', 0x68); // [E8] -- Contains extra time information about the data contained in the Block. While there are a few files in the wild with this element, it is no longer in use and has been deprecated. Being able to interpret this element is not required for playback.
196	define('EBML_ID_CUECODECSTATE', 0x6A); // [EA] -- The position of the Codec State corresponding to this Cue element. 0 means that the data is taken from the initial Track Entry.
197	define('EBML_ID_CUEREFCODECSTATE', 0x6B); // [EB] -- The position of the Codec State corresponding to this referenced element. 0 means that the data is taken from the initial Track Entry.
198	define('EBML_ID_VOID', 0x6C); // [EC] -- Used to void damaged data, to avoid unexpected behaviors when using damaged data. The content is discarded. Also used to reserve space in a sub-element for later use.
199	define('EBML_ID_CLUSTERTIMECODE', 0x67); // [E7] -- Absolute timecode of the cluster (based on TimecodeScale).
200	define('EBML_ID_CLUSTERBLOCKADDID', 0x6E); // [EE] -- An ID to identify the BlockAdditional level.
201	define('EBML_ID_CUECLUSTERPOSITION', 0x71); // [F1] -- The position of the Cluster containing the required Block.
202	define('EBML_ID_CUETRACK', 0x77); // [F7] -- The track for which a position is given.
203	define('EBML_ID_CLUSTERREFERENCEPRIORITY', 0x7A); // [FA] -- This frame is referenced and has the specified cache priority. In cache only a frame of the same or higher priority can replace this frame. A value of 0 means the frame is not referenced.
204	define('EBML_ID_CLUSTERREFERENCEBLOCK', 0x7B); // [FB] -- Timecode of another frame used as a reference (ie: B or P frame). The timecode is relative to the block it's attached to.
205	define('EBML_ID_CLUSTERREFERENCEVIRTUAL', 0x7D); // [FD] -- Relative position of the data that should be in position of the virtual block.
206
207
208	class getid3_matroska
209	{
210	var $read_buffer_size = 32768; // size of read buffer, 32kB is default
211	var $hide_clusters = true; // if true, do not return information about CLUSTER chunks, since there's a lot of them and they're not usually useful
212	var $warnings = array();
213
214	function getid3_matroska(&$fd, &$ThisFileInfo) {
215
216	// http://www.matroska.org/technical/specs/index.html#EBMLBasics
217	$offset = $ThisFileInfo['avdataoffset'];
218	$EBMLdata = '';
219	$EBMLdata_offset = $offset;
220
221	if ($ThisFileInfo['avdataend'] > 2147483648) {
222	$this->warnings[] = 'This version of getID3() may or may not correctly handle Matroska files larger than 2GB';
223	}
224
225	while ($offset < $ThisFileInfo['avdataend']) {
226	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
227
228	$top_element_offset = $offset;
229	$top_element_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
230	$top_element_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
231	if ($top_element_length === false) {
232	$this->warnings[] = 'invalid chunk length at '.$top_element_offset;
233	$offset = pow(2, 63);
234	break;
235	}
236	$top_element_endoffset = $offset + $top_element_length;
237	switch ($top_element_id) {
238	case EBML_ID_EBML:
239	$ThisFileInfo['fileformat'] = 'matroska';
240	$ThisFileInfo['matroska']['header']['offset'] = $top_element_offset;
241	$ThisFileInfo['matroska']['header']['length'] = $top_element_length;
242
243	while ($offset < $top_element_endoffset) {
244	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
245	$element_data = array();
246	$element_data_offset = $offset;
247	$element_data['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
248	$element_data['id_name'] = $this->EBMLidName($element_data['id']);
249	$element_data['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
250	$end_offset = $offset + $element_data['length'];
251
252	switch ($element_data['id']) {
253	case EBML_ID_EBMLVERSION:
254	case EBML_ID_EBMLREADVERSION:
255	case EBML_ID_EBMLMAXIDLENGTH:
256	case EBML_ID_EBMLMAXSIZELENGTH:
257	case EBML_ID_DOCTYPEVERSION:
258	case EBML_ID_DOCTYPEREADVERSION:
259	$element_data['data'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $element_data['length']));
260	break;
261	case EBML_ID_DOCTYPE:
262	$element_data['data'] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $element_data['length']), "\x00");
263	break;
264	default:
265	$this->warnings[] = 'Unhandled track.video element['.__LINE__.'] ('.$element_data['id'].'::'.$element_data['id_name'].') at '.$element_data_offset;
266	break;
267	}
268	$offset = $end_offset;
269	$ThisFileInfo['matroska']['header']['elements'][] = $element_data;
270	}
271	break;
272
273
274	case EBML_ID_SEGMENT:
275	$ThisFileInfo['matroska']['segment'][0]['offset'] = $top_element_offset;
276	$ThisFileInfo['matroska']['segment'][0]['length'] = $top_element_length;
277
278	$segment_key = -1;
279	while ($offset < $ThisFileInfo['avdataend']) {
280	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
281
282	$element_data = array();
283	$element_data['offset'] = $offset;
284	$element_data['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
285	$element_data['id_name'] = $this->EBMLidName($element_data['id']);
286	$element_data['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
287	if ($element_data['length'] === false) {
288	$this->warnings[] = 'invalid chunk length at '.$element_data['offset'];
289	//$offset = pow(2, 63);
290	$offset = $ThisFileInfo['avdataend'];
291	break;
292	}
293	$element_end = $offset + $element_data['length'];
294	switch ($element_data['id']) {
295	//case EBML_ID_CLUSTER:
296	// // too many cluster entries, probably not useful
297	// break;
298	case false:
299	$this->warnings[] = 'invalid ID at '.$element_data['offset'];
300	$offset = $element_end;
301	continue 3;
302	default:
303	$ThisFileInfo['matroska']['segments'][] = $element_data;
304	break;
305	}
306	$segment_key++;
307
308	switch ($element_data['id']) {
309	case EBML_ID_SEEKHEAD: // Contains the position of other level 1 elements
310	while ($offset < $element_end) {
311	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
312	$seek_entry = array();
313	$seek_entry['offset'] = $offset;
314	$seek_entry['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
315	$seek_entry['id_name'] = $this->EBMLidName($seek_entry['id']);
316	$seek_entry['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
317	$seek_end_offset = $offset + $seek_entry['length'];
318	switch ($seek_entry['id']) {
319	case EBML_ID_SEEK: // Contains a single seek entry to an EBML element
320	while ($offset < $seek_end_offset) {
321	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
322	$id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
323	$length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
324	$value = substr($EBMLdata, $offset - $EBMLdata_offset, $length);
325	$offset += $length;
326	switch ($id) {
327	case EBML_ID_SEEKID:
328	$dummy = 0;
329	$seek_entry['target_id'] = $this->readEBMLint($value, $dummy);
330	$seek_entry['target_name'] = $this->EBMLidName($seek_entry['target_id']);
331	break;
332	case EBML_ID_SEEKPOSITION:
333	$seek_entry['target_offset'] = $element_data['offset'] + getid3_lib::BigEndian2Int($value);
334	break;
335	default:
336	$ThisFileInfo['error'][] = 'Unhandled segment['.__LINE__.'] ('.$id.') at '.$offset;
337	break;
338	}
339	}
340	$ThisFileInfo['matroska']['seek'][] = $seek_entry;
341	//switch ($seek_entry['target_id']) {
342	// case EBML_ID_CLUSTER:
343	// // too many cluster seek points, probably not useful
344	// break;
345	// default:
346	// $ThisFileInfo['matroska']['seek'][] = $seek_entry;
347	// break;
348	//}
349	break;
350	default:
351	$this->warnings[] = 'Unhandled seekhead element['.__LINE__.'] ('.$seek_entry['id'].') at '.$offset;
352	break;
353	}
354	$offset = $seek_end_offset;
355	}
356	break;
357
358	case EBML_ID_TRACKS: // information about all tracks in segment
359	$ThisFileInfo['matroska']['tracks'] = $element_data;
360	while ($offset < $element_end) {
361	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
362	$track_entry = array();
363	$track_entry['offset'] = $offset;
364	$track_entry['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
365	$track_entry['id_name'] = $this->EBMLidName($track_entry['id']);
366	$track_entry['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
367	$track_entry_endoffset = $offset + $track_entry['length'];
368	switch ($track_entry['id']) {
369	case EBML_ID_TRACKENTRY: //subelements: Describes a track with all elements.
370	while ($offset < $track_entry_endoffset) {
371	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
372	$subelement_offset = $offset;
373	$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
374	$subelement_idname = $this->EBMLidName($subelement_id);
375	$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
376	$subelement_end = $offset + $subelement_length;
377	switch ($subelement_id) {
378	case EBML_ID_TRACKNUMBER:
379	case EBML_ID_TRACKUID:
380	case EBML_ID_TRACKTYPE:
381	case EBML_ID_MINCACHE:
382	case EBML_ID_MAXCACHE:
383	case EBML_ID_MAXBLOCKADDITIONID:
384	case EBML_ID_DEFAULTDURATION: // nanoseconds per frame
385	$track_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
386	break;
387	case EBML_ID_TRACKTIMECODESCALE:
388	$track_entry[$subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
389	break;
390	case EBML_ID_CODECID:
391	case EBML_ID_LANGUAGE:
392	case EBML_ID_NAME:
393	case EBML_ID_CODECPRIVATE:
394	$track_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "\x00");
395	break;
396	case EBML_ID_FLAGENABLED:
397	case EBML_ID_FLAGDEFAULT:
398	case EBML_ID_FLAGFORCED:
399	case EBML_ID_FLAGLACING:
400	case EBML_ID_CODECDECODEALL:
401	$track_entry[$subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
402	break;
403	case EBML_ID_VIDEO:
404	while ($offset < $subelement_end) {
405	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
406	$sub_subelement_offset = $offset;
407	$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
408	$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
409	$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
410	$sub_subelement_end = $offset + $sub_subelement_length;
411	switch ($sub_subelement_id) {
412	case EBML_ID_PIXELWIDTH:
413	case EBML_ID_PIXELHEIGHT:
414	case EBML_ID_STEREOMODE:
415	case EBML_ID_PIXELCROPBOTTOM:
416	case EBML_ID_PIXELCROPTOP:
417	case EBML_ID_PIXELCROPLEFT:
418	case EBML_ID_PIXELCROPRIGHT:
419	case EBML_ID_DISPLAYWIDTH:
420	case EBML_ID_DISPLAYHEIGHT:
421	case EBML_ID_DISPLAYUNIT:
422	case EBML_ID_ASPECTRATIOTYPE:
423	$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
424	break;
425	case EBML_ID_FLAGINTERLACED:
426	$track_entry[$sub_subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
427	break;
428	case EBML_ID_GAMMAVALUE:
429	$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
430	break;
431	case EBML_ID_COLOURSPACE:
432	$track_entry[$sub_subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length), "\x00");
433	break;
434	default:
435	$this->warnings[] = 'Unhandled track.video element['.__LINE__.'] ('.$sub_subelement_id.'::'.$sub_subelement_idname.') at '.$sub_subelement_offset;
436	break;
437	}
438	$offset = $sub_subelement_end;
439	}
440
441	if ((@$track_entry[$this->EBMLidName(EBML_ID_CODECID)] == 'V_MS/VFW/FOURCC') && isset($track_entry[$this->EBMLidName(EBML_ID_CODECPRIVATE)])) {
442	if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, false)) {
443	$track_entry['codec_private_parsed'] = getid3_riff::ParseBITMAPINFOHEADER($track_entry[$this->EBMLidName(EBML_ID_CODECPRIVATE)]);
444	} else {
445	$this->warnings[] = 'Unable to parse codec private data['.__LINE__.'] because cannot include "module.audio-video.riff.php"';
446	}
447	}
448	break;
449	case EBML_ID_AUDIO:
450	while ($offset < $subelement_end) {
451	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
452	$sub_subelement_offset = $offset;
453	$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
454	$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
455	$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
456	$sub_subelement_end = $offset + $sub_subelement_length;
457	switch ($sub_subelement_id) {
458	case EBML_ID_CHANNELS:
459	case EBML_ID_BITDEPTH:
460	$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
461	break;
462	case EBML_ID_SAMPLINGFREQUENCY:
463	case EBML_ID_OUTPUTSAMPLINGFREQUENCY:
464	$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
465	break;
466	case EBML_ID_CHANNELPOSITIONS:
467	$track_entry[$sub_subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length), "\x00");
468	break;
469	default:
470	$this->warnings[] = 'Unhandled track.video element['.__LINE__.'] ('.$sub_subelement_id.'::'.$sub_subelement_idname.') at '.$sub_subelement_offset;
471	break;
472	}
473	$offset = $sub_subelement_end;
474	}
475	break;
476
477	case EBML_ID_CONTENTENCODINGS:
478	while ($offset < $subelement_end) {
479	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
480	$sub_subelement_offset = $offset;
481	$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
482	$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
483	$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
484	$sub_subelement_end = $offset + $sub_subelement_length;
485	switch ($sub_subelement_id) {
486	case EBML_ID_CONTENTENCODING:
487	while ($offset < $sub_subelement_end) {
488	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
489	$sub_sub_subelement_offset = $offset;
490	$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
491	$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
492	$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
493	$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
494	switch ($sub_sub_subelement_id) {
495	case EBML_ID_CONTENTENCODINGORDER:
496	case EBML_ID_CONTENTENCODINGSCOPE:
497	case EBML_ID_CONTENTENCODINGTYPE:
498	$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
499	break;
500	case EBML_ID_CONTENTCOMPRESSION:
501	while ($offset < $sub_sub_subelement_end) {
502	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
503	$sub_sub_sub_subelement_offset = $offset;
504	$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
505	$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
506	$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
507	$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
508	switch ($sub_sub_sub_subelement_id) {
509	case EBML_ID_CONTENTCOMPALGO:
510	$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length));
511	break;
512	case EBML_ID_CONTENTCOMPSETTINGS:
513	$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length);
514	break;
515	default:
516	$this->warnings[] = 'Unhandled track.contentencodings.contentencoding.contentcompression element['.__LINE__.'] ('.$subelement_id.'::'.$subelement_idname.' ['.$subelement_length.' bytes]) at '.$subelement_offset;
517	break;
518	}
519	$offset = $sub_sub_sub_subelement_end;
520	}
521	break;
522
523	case EBML_ID_CONTENTENCRYPTION:
524	while ($offset < $sub_sub_subelement_end) {
525	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
526	$sub_sub_sub_subelement_offset = $offset;
527	$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
528	$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
529	$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
530	$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
531	switch ($sub_sub_sub_subelement_id) {
532	case EBML_ID_CONTENTENCALGO:
533	case EBML_ID_CONTENTSIGALGO:
534	case EBML_ID_CONTENTSIGHASHALGO:
535	$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length));
536	break;
537	case EBML_ID_CONTENTENCKEYID:
538	case EBML_ID_CONTENTSIGNATURE:
539	case EBML_ID_CONTENTSIGKEYID:
540	$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length);
541	break;
542	default:
543	$this->warnings[] = 'Unhandled track.contentencodings.contentencoding.contentcompression element['.__LINE__.'] ('.$subelement_id.'::'.$subelement_idname.' ['.$subelement_length.' bytes]) at '.$subelement_offset;
544	break;
545	}
546	$offset = $sub_sub_sub_subelement_end;
547	}
548	break;
549
550	default:
551	$this->warnings[] = 'Unhandled track.contentencodings.contentencoding element['.__LINE__.'] ('.$subelement_id.'::'.$subelement_idname.' ['.$subelement_length.' bytes]) at '.$subelement_offset;
552	break;
553	}
554	$offset = $sub_sub_subelement_end;
555	}
556	break;
557	default:
558	$this->warnings[] = 'Unhandled track.contentencodings element['.__LINE__.'] ('.$subelement_id.'::'.$subelement_idname.' ['.$subelement_length.' bytes]) at '.$subelement_offset;
559	break;
560	}
561	$offset = $sub_subelement_end;
562	}
563	break;
564
565	default:
566	$this->warnings[] = 'Unhandled track element['.__LINE__.'] ('.$subelement_id.'::'.$subelement_idname.' ['.$subelement_length.' bytes]) at '.$subelement_offset;
567	break;
568	}
569	$offset = $subelement_end;
570	}
571	break;
572	default:
573	$this->warnings[] = 'Unhandled track element['.__LINE__.'] ('.$track_entry['id'].'::'.$track_entry['id_name'].') at '.$track_entry['offset'];
574	$offset = $track_entry_endoffset;
575	break;
576	}
577	$ThisFileInfo['matroska']['tracks']['tracks'][] = $track_entry;
578	}
579	break;
580
581	case EBML_ID_INFO: // Contains the position of other level 1 elements
582	$info_entry = array();
583	while ($offset < $element_end) {
584	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
585	$subelement_offset = $offset;
586	$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
587	$subelement_idname = $this->EBMLidName($subelement_id);
588	$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
589	$subelement_end = $offset + $subelement_length;
590	switch ($subelement_id) {
591	case EBML_ID_CHAPTERTRANSLATEEDITIONUID:
592	case EBML_ID_CHAPTERTRANSLATECODEC:
593	case EBML_ID_TIMECODESCALE:
594	$info_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
595	break;
596	case EBML_ID_DURATION:
597	$info_entry[$subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
598	break;
599	case EBML_ID_DATEUTC:
600	$info_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
601	$info_entry[$subelement_idname.'_unix'] = $this->EBMLdate2unix($info_entry[$subelement_idname]);
602	break;
603	case EBML_ID_SEGMENTUID:
604	case EBML_ID_PREVUID:
605	case EBML_ID_NEXTUID:
606	case EBML_ID_SEGMENTFAMILY:
607	case EBML_ID_CHAPTERTRANSLATEID:
608	$info_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "\x00");
609	break;
610	case EBML_ID_SEGMENTFILENAME:
611	case EBML_ID_PREVFILENAME:
612	case EBML_ID_NEXTFILENAME:
613	case EBML_ID_TITLE:
614	case EBML_ID_MUXINGAPP:
615	case EBML_ID_WRITINGAPP:
616	$info_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "\x00");
617	break;
618	default:
619	$this->warnings[] = 'Unhandled info element['.__LINE__.'] ('.$subelement_id.'::'.$subelement_idname.' ['.$subelement_length.' bytes]) at '.$subelement_offset;
620	break;
621	}
622	$offset = $subelement_end;
623	}
624	$ThisFileInfo['matroska']['info'][] = $info_entry;
625	break;
626
627	case EBML_ID_CUES:
628	$cues_entry = array();
629	while ($offset < $element_end) {
630	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
631	$subelement_offset = $offset;
632	$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
633	$subelement_idname = $this->EBMLidName($subelement_id);
634	$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
635	$subelement_end = $offset + $subelement_length;
636	switch ($subelement_id) {
637	case EBML_ID_CUEPOINT:
638	$cuepoint_entry = array();
639	while ($offset < $subelement_end) {
640	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
641	$sub_subelement_offset = $offset;
642	$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
643	$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
644	$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
645	$sub_subelement_end = $offset + $sub_subelement_length;
646	switch ($sub_subelement_id) {
647	case EBML_ID_CUETRACKPOSITIONS:
648	while ($offset < $sub_subelement_end) {
649	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
650	$sub_sub_subelement_offset = $offset;
651	$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
652	$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
653	$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
654	$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
655	switch ($sub_sub_subelement_id) {
656	case EBML_ID_CUETRACK:
657	$cuepoint_entry[$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
658	break;
659	default:
660	$this->warnings[] = 'Unhandled cues.cuepoint.cuetrackpositions element['.__LINE__.'] ('.$sub_sub_subelement_id.'::'.$sub_sub_subelement_idname.') at '.$sub_sub_subelement_offset;
661	break;
662	}
663	$offset = $sub_subelement_end;
664	}
665	break;
666	case EBML_ID_CUETIME:
667	$cuepoint_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
668	break;
669	default:
670	$this->warnings[] = 'Unhandled cues.cuepoint element['.__LINE__.'] ('.$sub_subelement_id.'::'.$sub_subelement_idname.') at '.$sub_subelement_offset;
671	break;
672	}
673	$offset = $sub_subelement_end;
674	}
675	$cues_entry[] = $cuepoint_entry;
676	$offset = $sub_subelement_end;
677	break;
678	default:
679	$this->warnings[] = 'Unhandled cues element['.__LINE__.'] ('.$subelement_id.'::'.$subelement_idname.' ['.$subelement_length.' bytes]) at '.$subelement_offset;
680	break;
681	}
682	$offset = $subelement_end;
683	}
684	$ThisFileInfo['matroska']['cues'] = $cues_entry;
685	break;
686
687	case EBML_ID_TAGS:
688	$tags_entry = array();
689	while ($offset < $element_end) {
690	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
691	$subelement_offset = $offset;
692	$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
693	$subelement_idname = $this->EBMLidName($subelement_id);
694	$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
695	$subelement_end = $offset + $subelement_length;
696	switch ($subelement_id) {
697	case EBML_ID_WRITINGAPP:
698	$tags_entry[$subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length);
699	break;
700	case EBML_ID_TAG:
701	$tag_entry = array();
702	while ($offset < $subelement_end) {
703	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
704	$sub_subelement_offset = $offset;
705	$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
706	$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
707	$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
708	$sub_subelement_end = $offset + $sub_subelement_length;
709	switch ($sub_subelement_id) {
710	case EBML_ID_TARGETS:
711	$targets_entry = array();
712	while ($offset < $sub_subelement_end) {
713	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
714	$sub_sub_subelement_offset = $offset;
715	$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
716	$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
717	$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
718	$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
719	switch ($sub_sub_subelement_id) {
720	case EBML_ID_TARGETTYPEVALUE:
721	case EBML_ID_EDITIONUID:
722	case EBML_ID_CHAPTERUID:
723	case EBML_ID_ATTACHMENTUID:
724	case EBML_ID_TAGTRACKUID:
725	case EBML_ID_TAGCHAPTERUID:
726	$targets_entry[$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
727	break;
728	default:
729	$this->warnings[] = 'Unhandled tag.targets element['.__LINE__.'] ('.$sub_sub_subelement_id.'::'.$sub_sub_subelement_idname.') at '.$sub_sub_subelement_offset;
730	break;
731	}
732	$offset = $sub_sub_subelement_end;
733	}
734	$tag_entry[$sub_subelement_idname][] = $targets_entry;
735	break;
736	case EBML_ID_SIMPLETAG:
737	$simpletag_entry = array();
738	while ($offset < $sub_subelement_end) {
739	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
740	$sub_sub_subelement_offset = $offset;
741	$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
742	$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
743	$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
744	$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
745	switch ($sub_sub_subelement_id) {
746	case EBML_ID_TAGNAME:
747	case EBML_ID_TAGLANGUAGE:
748	case EBML_ID_TAGSTRING:
749	case EBML_ID_TAGBINARY:
750	$simpletag_entry[$sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length);
751	break;
752	case EBML_ID_TAGDEFAULT:
753	$simpletag_entry[$sub_sub_subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
754	break;
755	default:
756	$this->warnings[] = 'Unhandled tag.simpletag element['.__LINE__.'] ('.$sub_sub_subelement_id.'::'.$sub_sub_subelement_idname.') at '.$sub_sub_subelement_offset;
757	break;
758	}
759	$offset = $sub_sub_subelement_end;
760	}
761	$tag_entry[$sub_subelement_idname][] = $simpletag_entry;
762	break;
763	case EBML_ID_TARGETTYPE:
764	$tag_entry[$sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length);
765	break;
766	case EBML_ID_TRACKUID:
767	$tag_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
768	break;
769	default:
770	$this->warnings[] = 'Unhandled tags.tag element['.__LINE__.'] ('.$sub_subelement_id.'::'.$sub_subelement_idname.') at '.$sub_subelement_offset;
771	break;
772	}
773	$offset = $sub_subelement_end;
774	}
775	$tags_entry['tags'][] = $tag_entry;
776	$offset = $sub_subelement_end;
777	break;
778	default:
779	$this->warnings[] = 'Unhandled tags element['.__LINE__.'] ('.$subelement_id.'::'.$subelement_idname.' ['.$subelement_length.' bytes]) at '.$subelement_offset;
780	break;
781	}
782	$offset = $subelement_end;
783	}
784	$ThisFileInfo['matroska']['tags'] = $tags_entry;
785	break;
786
787
788	case EBML_ID_ATTACHMENTS:
789	while ($offset < $element_end) {
790	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
791	$subelement_offset = $offset;
792	$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
793	$subelement_idname = $this->EBMLidName($subelement_id);
794	$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
795	$subelement_end = $offset + $subelement_length;
796	switch ($subelement_id) {
797	case EBML_ID_ATTACHEDFILE:
798	$attachedfile_entry = array();
799	while ($offset < $subelement_end) {
800	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
801	$sub_subelement_offset = $offset;
802	$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
803	$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
804	$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
805	$sub_subelement_end = $offset + $sub_subelement_length;
806	switch ($sub_subelement_id) {
807	case EBML_ID_FILEDESCRIPTION:
808	case EBML_ID_FILENAME:
809	case EBML_ID_FILEMIMETYPE:
810	$attachedfile_entry[$sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length);
811	break;
812
813	case EBML_ID_FILEDATA:
814	$attachedfile_entry['data_offset'] = $offset;
815	$attachedfile_entry['data_length'] = $sub_subelement_length;
816	if ($sub_subelement_length < 1024) {
817	$attachedfile_entry[$sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length);
818	}
819	break;
820
821	case EBML_ID_FILEUID:
822	$attachedfile_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
823	break;
824
825	default:
826	$this->warnings[] = 'Unhandled attachment.attachedfile element['.__LINE__.'] ('.$sub_subelement_id.'::'.$sub_subelement_idname.') at '.$sub_subelement_offset;
827	break;
828	}
829	$offset = $sub_subelement_end;
830	}
831	$ThisFileInfo['matroska']['attachments'][] = $attachedfile_entry;
832	$offset = $sub_subelement_end;
833	break;
834	default:
835	$this->warnings[] = 'Unhandled tags element['.__LINE__.'] ('.$subelement_id.'::'.$subelement_idname.' ['.$subelement_length.' bytes]) at '.$subelement_offset;
836	break;
837	}
838	$offset = $subelement_end;
839	}
840	break;
841
842
843	case EBML_ID_CHAPTERS: // not important to us, contains mostly actual audio/video data, ignore
844	while ($offset < $element_end) {
845	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
846	$subelement_offset = $offset;
847	$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
848	$subelement_idname = $this->EBMLidName($subelement_id);
849	$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
850	$subelement_end = $offset + $subelement_length;
851	switch ($subelement_id) {
852	case EBML_ID_EDITIONENTRY:
853	$editionentry_entry = array();
854	while ($offset < $subelement_end) {
855	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
856	$sub_subelement_offset = $offset;
857	$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
858	$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
859	$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
860	$sub_subelement_end = $offset + $sub_subelement_length;
861	switch ($sub_subelement_id) {
862	case EBML_ID_EDITIONUID:
863	$editionentry_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
864	break;
865	case EBML_ID_EDITIONFLAGHIDDEN:
866	case EBML_ID_EDITIONFLAGDEFAULT:
867	case EBML_ID_EDITIONFLAGORDERED:
868	$editionentry_entry[$sub_subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
869	break;
870	case EBML_ID_CHAPTERATOM:
871	$chapteratom_entry = array();
872	while ($offset < $sub_subelement_end) {
873	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
874	$sub_sub_subelement_offset = $offset;
875	$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
876	$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
877	$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
878	$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
879	switch ($sub_sub_subelement_id) {
880	case EBML_ID_CHAPTERSEGMENTUID:
881	case EBML_ID_CHAPTERSEGMENTEDITIONUID:
882	$chapteratom_entry[$sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length);
883	break;
884	case EBML_ID_CHAPTERFLAGENABLED:
885	case EBML_ID_CHAPTERFLAGHIDDEN:
886	$chapteratom_entry[$sub_sub_subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
887	break;
888	case EBML_ID_CHAPTERUID:
889	case EBML_ID_CHAPTERTIMESTART:
890	case EBML_ID_CHAPTERTIMEEND:
891	$chapteratom_entry[$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
892	break;
893	case EBML_ID_CHAPTERTRACK:
894	$chaptertrack_entry = array();
895	while ($offset < $sub_sub_subelement_end) {
896	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
897	$sub_sub_sub_subelement_offset = $offset;
898	$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
899	$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
900	$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
901	$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
902	switch ($sub_sub_sub_subelement_id) {
903	case EBML_ID_CHAPTERTRACKNUMBER:
904	$chaptertrack_entry[$sub_sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length));
905	break;
906	default:
907	$this->warnings[] = 'Unhandled chapters.editionentry.chapteratom.chaptertrack element['.__LINE__.'] ('.$sub_sub_sub_subelement_id.'::'.$sub_sub_sub_subelement_idname.') at '.$sub_sub_sub_subelement_offset;
908	break;
909	}
910	$offset = $sub_sub_sub_subelement_end;
911	}
912	$chapteratom_entry[$sub_sub_subelement_idname][] = $chaptertrack_entry;
913	break;
914	case EBML_ID_CHAPTERDISPLAY:
915	$chapterdisplay_entry = array();
916	while ($offset < $sub_sub_subelement_end) {
917	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
918	$sub_sub_sub_subelement_offset = $offset;
919	$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
920	$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_sub_subelement_id);
921	$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
922	$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
923	switch ($sub_sub_sub_subelement_id) {
924	case EBML_ID_CHAPSTRING:
925	case EBML_ID_CHAPLANGUAGE:
926	case EBML_ID_CHAPCOUNTRY:
927	$chapterdisplay_entry[$sub_sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length);
928	break;
929	default:
930	$this->warnings[] = 'Unhandled chapters.editionentry.chapteratom.chapterdisplay element['.__LINE__.'] ('.$sub_sub_sub_subelement_id.'::'.$sub_sub_sub_subelement_idname.') at '.$sub_sub_sub_subelement_offset;
931	break;
932	}
933	$offset = $sub_sub_sub_subelement_end;
934	}
935	$chapteratom_entry[$sub_sub_subelement_idname][] = $chapterdisplay_entry;
936	break;
937	default:
938	$this->warnings[] = 'Unhandled chapters.editionentry.chapteratom element['.__LINE__.'] ('.$sub_sub_subelement_id.'::'.$sub_sub_subelement_idname.') at '.$sub_sub_subelement_offset;
939	break;
940	}
941	$offset = $sub_sub_subelement_end;
942	}
943	$editionentry_entry[$sub_subelement_idname][] = $chapteratom_entry;
944	break;
945	default:
946	$this->warnings[] = 'Unhandled chapters.editionentry element['.__LINE__.'] ('.$sub_subelement_id.'::'.$sub_subelement_idname.') at '.$sub_subelement_offset;
947	break;
948	}
949	$offset = $sub_subelement_end;
950	}
951	$ThisFileInfo['matroska']['chapters'][] = $editionentry_entry;
952	$offset = $sub_subelement_end;
953	break;
954	default:
955	$this->warnings[] = 'Unhandled chapters element['.__LINE__.'] ('.$subelement_id.'::'.$subelement_idname.' ['.$subelement_length.' bytes]) at '.$subelement_offset;
956	break;
957	}
958	$offset = $subelement_end;
959	}
960	break;
961
962
963	case EBML_ID_VOID: // padding, ignore
964	$void_entry = array();
965	$void_entry['offset'] = $offset;
966	$ThisFileInfo['matroska']['void'][] = $void_entry;
967	break;
968
969	case EBML_ID_CLUSTER: // not important to us, contains mostly actual audio/video data, ignore
970	$cluster_entry = array();
971	while ($offset < $element_end) {
972	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
973	$subelement_offset = $offset;
974	//var_dump($offset);
975	$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
976	//var_dump($subelement_id);
977	//echo '<br>';
978	$subelement_idname = $this->EBMLidName($subelement_id);
979	$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
980	//var_dump($subelement_length);
981	$subelement_end = $offset + $subelement_length;
982	//exit;
983	switch ($subelement_id) {
984	case EBML_ID_CLUSTERTIMECODE:
985	case EBML_ID_CLUSTERPOSITION:
986	case EBML_ID_CLUSTERPREVSIZE:
987	$cluster_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
988	break;
989
990	case EBML_ID_CLUSTERSILENTTRACKS:
991	$cluster_silent_tracks = array();
992	while ($offset < $subelement_end) {
993	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
994	$sub_subelement_offset = $offset;
995	$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
996	$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
997	$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
998	$sub_subelement_end = $offset + $sub_subelement_length;
999	switch ($sub_subelement_id) {
1000	case EBML_ID_CLUSTERSILENTTRACKNUMBER:
1001	$cluster_silent_tracks[] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
1002	break;
1003	default:
1004	$this->warnings[] = 'Unhandled clusters.silenttracks element['.__LINE__.'] ('.$sub_subelement_id.'::'.$sub_subelement_idname.') at '.$sub_subelement_offset;
1005	break;
1006	}
1007	$offset = $sub_subelement_end;
1008	}
1009	$cluster_entry[$subelement_idname][] = $cluster_silent_tracks;
1010	$offset = $sub_subelement_end;
1011	break;
1012
1013	case EBML_ID_CLUSTERBLOCKGROUP:
1014	$cluster_block_group = array('offset'=>$offset);
1015	while ($offset < $subelement_end) {
1016	$this->EnsureBufferHasEnoughData($fd, $EBMLdata, $offset, $EBMLdata_offset);
1017	$sub_subelement_offset = $offset;
1018	$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
1019	$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
1020	$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
1021	$sub_subelement_end = $offset + $sub_subelement_length;
1022	switch ($sub_subelement_id) {
1023	case EBML_ID_CLUSTERBLOCK:
1024	$cluster_block_data = array();
1025	$cluster_block_data['tracknumber'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
1026	$cluster_block_data['timecode'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 2));
1027	$offset += 2;
1028	// unsure whether this is 1 octect or 2 octets? (http://matroska.org/technical/specs/index.html#block_structure)
1029	$cluster_block_data['flags_raw'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
1030	$offset += 1;
1031	//$cluster_block_data['flags']['reserved1'] = (($cluster_block_data['flags_raw'] & 0xF0) >> 4);
1032	$cluster_block_data['flags']['invisible'] = (bool) (($cluster_block_data['flags_raw'] & 0x08) >> 3);
1033	$cluster_block_data['flags']['lacing'] = (($cluster_block_data['flags_raw'] & 0x06) >> 1);
1034	//$cluster_block_data['flags']['reserved2'] = (($cluster_block_data['flags_raw'] & 0x01) >> 0);
1035	$cluster_block_data['flags']['lacing_type'] = $this->MatroskaBlockLacingType($cluster_block_data['flags']['lacing']);
1036	if ($cluster_block_data['flags']['lacing'] != 0) {
1037	$cluster_block_data['lace_frames'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1)); // Number of frames in the lace-1 (uint8)
1038	$offset += 1;
1039	if ($cluster_block_data['flags']['lacing'] != 2) {
1040	$cluster_block_data['lace_frames'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1)); // Lace-coded size of each frame of the lace, except for the last one (multiple uint8). *This is not used with Fixed-size lacing as it is calculated automatically from (total size of lace) / (number of frames in lace).
1041	$offset += 1;
1042	}
1043	}
1044	if (!isset($ThisFileInfo['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']])) {
1045	$ThisFileInfo['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']] = $offset;
1046	}
1047	$cluster_block_group[$sub_subelement_idname] = $cluster_block_data;
1048	break;
1049
1050	case EBML_ID_CLUSTERREFERENCEPRIORITY: // unsigned-int
1051	case EBML_ID_CLUSTERBLOCKDURATION: // unsigned-int
1052	$cluster_block_group[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
1053	break;
1054
1055	case EBML_ID_CLUSTERREFERENCEBLOCK: // signed-int
1056	$cluster_block_group[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length), false, true);
1057	break;
1058
1059	default:
1060	$this->warnings[] = 'Unhandled clusters.blockgroup element['.__LINE__.'] ('.$sub_subelement_id.'::'.$sub_subelement_idname.') at '.$sub_subelement_offset;
1061	break;
1062	}
1063	$offset = $sub_subelement_end;
1064	}
1065	$cluster_entry[$subelement_idname][] = $cluster_block_group;
1066	$offset = $sub_subelement_end;
1067	break;
1068
1069	default:
1070	$this->warnings[] = 'Unhandled cluster element['.__LINE__.'] ('.$subelement_id.'::'.$subelement_idname.' ['.$subelement_length.' bytes]) at '.$subelement_offset;
1071	break;
1072	}
1073	$offset = $subelement_end;
1074	}
1075	$ThisFileInfo['matroska']['cluster'][] = $cluster_entry;
1076
1077	// check to see if all the data we need exists already, if so, break out of the loop
1078	if (isset($ThisFileInfo['matroska']['info']) && is_array($ThisFileInfo['matroska']['info'])) {
1079	if (isset($ThisFileInfo['matroska']['tracks']['tracks']) && is_array($ThisFileInfo['matroska']['tracks']['tracks'])) {
1080	break 2;
1081	}
1082	}
1083	break;
1084
1085	default:
1086	if ($element_data['id_name'] == dechex($element_data['id'])) {
1087	$ThisFileInfo['error'][] = 'Unhandled segment['.__LINE__.'] ('.$element_data['id'].') at '.$element_data_offset;
1088	} else {
1089	$this->warnings[] = 'Unhandled segment['.__LINE__.'] ('.$element_data['id'].'::'.$element_data['id_name'].') at '.$element_data['offset'];
1090	}
1091	break;
1092	}
1093	$offset = $element_end;
1094	}
1095	break;
1096
1097
1098	default:
1099	$ThisFileInfo['error'][] = 'Unhandled chunk['.__LINE__.'] ('.$top_element_id.') at '.$offset;
1100	break;
1101	}
1102	$offset = $top_element_endoffset;
1103	}
1104
1105
1106
1107	if (isset($ThisFileInfo['matroska']['info']) && is_array($ThisFileInfo['matroska']['info'])) {
1108	foreach ($ThisFileInfo['matroska']['info'] as $key => $infoarray) {
1109	if (isset($infoarray['Duration'])) {
1110	// TimecodeScale is how many nanoseconds each Duration unit is
1111	$ThisFileInfo['playtime_seconds'] = $infoarray['Duration'] * ((isset($infoarray['TimecodeScale']) ? $infoarray['TimecodeScale'] : 1000000) / 1000000000);
1112	break;
1113	}
1114	}
1115	}
1116	if (isset($ThisFileInfo['matroska']['tracks']['tracks']) && is_array($ThisFileInfo['matroska']['tracks']['tracks'])) {
1117	foreach ($ThisFileInfo['matroska']['tracks']['tracks'] as $key => $trackarray) {
1118	$track_info = array();
1119	switch (@$trackarray['TrackType']) {
1120	case 1: // Video
1121	if (@$trackarray['PixelWidth']) { $track_info['resolution_x'] = $trackarray['PixelWidth']; }
1122	if (@$trackarray['PixelHeight']) { $track_info['resolution_y'] = $trackarray['PixelHeight']; }
1123	if (@$trackarray['DisplayWidth']) { $track_info['display_x'] = $trackarray['DisplayWidth']; }
1124	if (@$trackarray['DisplayHeight']) { $track_info['display_y'] = $trackarray['DisplayHeight']; }
1125	if (@$trackarray['DefaultDuration']) { $track_info['frame_rate'] = round(1000000000 / $trackarray['DefaultDuration'], 3); }
1126	if (@$trackarray['CodecID']) { $track_info['dataformat'] = $this->MatroskaCodecIDtoCommonName($trackarray['CodecID']); }
1127	if (!empty($trackarray['codec_private_parsed']['fourcc'])) {
1128	$track_info['fourcc'] = $trackarray['codec_private_parsed']['fourcc'];
1129	}
1130	$ThisFileInfo['video']['streams'][] = $track_info;
1131	if (isset($track_info['resolution_x']) && empty($ThisFileInfo['video']['resolution_x'])) {
1132	foreach ($track_info as $key => $value) {
1133	$ThisFileInfo['video'][$key] = $value;
1134	}
1135	}
1136	break;
1137	case 2: // Audio
1138	if (@$trackarray['CodecID']) { $track_info['dataformat'] = $this->MatroskaCodecIDtoCommonName($trackarray['CodecID']); }
1139	if (@$trackarray['SamplingFrequency']) { $track_info['sample_rate'] = $trackarray['SamplingFrequency']; }
1140	if (@$trackarray['Channels']) { $track_info['channels'] = $trackarray['Channels']; }
1141	if (@$trackarray['BitDepth']) { $track_info['bits_per_sample'] = $trackarray['BitDepth']; }
1142	switch (@$trackarray[$this->EBMLidName(EBML_ID_CODECID)]) {
1143	case 'A_PCM/INT/LIT':
1144	case 'A_PCM/INT/BIG':
1145	$track_info['bitrate'] = $trackarray['SamplingFrequency'] * $trackarray['Channels'] * $trackarray['BitDepth'];
1146	break;
1147
1148	case 'A_AC3':
1149	if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.ac3.php', __FILE__, false)) {
1150	$ac3_thisfileinfo = array('avdataoffset'=>$ThisFileInfo['matroska']['track_data_offsets'][$trackarray['TrackNumber']]);
1151	$getid3_ac3 = new getid3_ac3($fd, $ac3_thisfileinfo);
1152	$ThisFileInfo['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $ac3_thisfileinfo;
1153	if (!empty($ac3_thisfileinfo['error'])) {
1154	foreach ($ac3_thisfileinfo['error'] as $newerror) {
1155	$this->warnings[] = 'getid3_ac3() says: ['.$newerror.']';
1156	}
1157	}
1158	if (!empty($ac3_thisfileinfo['warning'])) {
1159	foreach ($ac3_thisfileinfo['warning'] as $newerror) {
1160	$this->warnings[] = 'getid3_ac3() says: ['.$newerror.']';
1161	}
1162	}
1163	if (isset($ac3_thisfileinfo['audio']) && is_array($ac3_thisfileinfo['audio'])) {
1164	foreach ($ac3_thisfileinfo['audio'] as $key => $value) {
1165	$track_info[$key] = $value;
1166	}
1167	}
1168	unset($ac3_thisfileinfo);
1169	unset($getid3_ac3);
1170	} else {
1171	$this->warnings[] = 'Unable to parse audio data['.__LINE__.'] because cannot include "module.audio.ac3.php"';
1172	}
1173	break;
1174
1175	case 'A_DTS':
1176	$dts_offset = $ThisFileInfo['matroska']['track_data_offsets'][$trackarray['TrackNumber']];
1177	// this is a NASTY hack, but sometimes audio data is off by a byte or two and not sure why, email info@getid3.org if you can explain better
1178	fseek($fd, $dts_offset, SEEK_SET);
1179	$magic_test = fread($fd, 8);
1180	for ($i = 0; $i < 4; $i++) {
1181	// look to see if DTS "magic" is here, if so adjust offset by that many bytes
1182	if (substr($magic_test, $i, 4) == "\x7F\xFE\x80\x01") {
1183	$dts_offset += $i;
1184	break;
1185	}
1186	}
1187	if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.dts.php', __FILE__, false)) {
1188	$dts_thisfileinfo = array('avdataoffset'=>$dts_offset);
1189	$getid3_dts = new getid3_dts($fd, $dts_thisfileinfo);
1190	$ThisFileInfo['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $dts_thisfileinfo;
1191	if (!empty($dts_thisfileinfo['error'])) {
1192	foreach ($dts_thisfileinfo['error'] as $newerror) {
1193	$this->warnings[] = 'getid3_dts() says: ['.$newerror.']';
1194	}
1195	}
1196	if (!empty($dts_thisfileinfo['warning'])) {
1197	foreach ($dts_thisfileinfo['warning'] as $newerror) {
1198	$this->warnings[] = 'getid3_dts() says: ['.$newerror.']';
1199	}
1200	}
1201	if (isset($dts_thisfileinfo['audio']) && is_array($dts_thisfileinfo['audio'])) {
1202	foreach ($dts_thisfileinfo['audio'] as $key => $value) {
1203	$track_info[$key] = $value;
1204	}
1205	}
1206	unset($dts_thisfileinfo);
1207	unset($getid3_dts);
1208	} else {
1209	$this->warnings[] = 'Unable to parse audio data['.__LINE__.'] because cannot include "module.audio.dts.php"';
1210	}
1211	break;
1212
1213	//case 'A_AAC':
1214	// if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.aac.php', __FILE__, false)) {
1215	// $aac_thisfileinfo = array('avdataoffset'=>$ThisFileInfo['matroska']['track_data_offsets'][$trackarray['TrackNumber']]);
1216	// $getid3_aac = new getid3_aac($fd, $aac_thisfileinfo);
1217	// $ThisFileInfo['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $aac_thisfileinfo;
1218	// if (isset($aac_thisfileinfo['audio']) && is_array($aac_thisfileinfo['audio'])) {
1219	// foreach ($aac_thisfileinfo['audio'] as $key => $value) {
1220	// $track_info[$key] = $value;
1221	// }
1222	// }
1223	// unset($aac_thisfileinfo);
1224	// unset($getid3_aac);
1225	// } else {
1226	// $this->warnings[] = 'Unable to parse audio data['.__LINE__.'] because cannot include "module.audio.aac.php"';
1227	// }
1228	// break;
1229
1230	case 'A_MPEG/L3':
1231	if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.mp3.php', __FILE__, false)) {
1232	$mp3_thisfileinfo = array(
1233	'avdataoffset' => $ThisFileInfo['matroska']['track_data_offsets'][$trackarray['TrackNumber']],
1234	'avdataend' => $ThisFileInfo['matroska']['track_data_offsets'][$trackarray['TrackNumber']] + 1024,
1235	);
1236	$getid3_mp3 = new getid3_mp3($fd, $mp3_thisfileinfo);
1237	$getid3_mp3->allow_bruteforce = true;
1238	//getid3_mp3::getOnlyMPEGaudioInfo($fd, $mp3_thisfileinfo, $offset, false);
1239	$ThisFileInfo['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $mp3_thisfileinfo;
1240	if (!empty($mp3_thisfileinfo['error'])) {
1241	foreach ($mp3_thisfileinfo['error'] as $newerror) {
1242	$this->warnings[] = 'getid3_mp3() says: ['.$newerror.']';
1243	}
1244	}
1245	if (!empty($mp3_thisfileinfo['warning'])) {
1246	foreach ($mp3_thisfileinfo['warning'] as $newerror) {
1247	$this->warnings[] = 'getid3_mp3() says: ['.$newerror.']';
1248	}
1249	}
1250	if (isset($mp3_thisfileinfo['audio']) && is_array($mp3_thisfileinfo['audio'])) {
1251	foreach ($mp3_thisfileinfo['audio'] as $key => $value) {
1252	$track_info[$key] = $value;
1253	}
1254	}
1255	unset($mp3_thisfileinfo);
1256	unset($getid3_mp3);
1257	} else {
1258	$this->warnings[] = 'Unable to parse audio data['.__LINE__.'] because cannot include "module.audio.mp3.php"';
1259	}
1260	break;
1261
1262	case 'A_VORBIS':
1263	if (isset($trackarray['CodecPrivate'])) {
1264	// this is a NASTY hack, email info@getid3.org if you have a better idea how to get this info out
1265	$found_vorbis = false;
1266	for ($vorbis_offset = 1; $vorbis_offset < 16; $vorbis_offset++) {
1267	if (substr($trackarray['CodecPrivate'], $vorbis_offset, 6) == 'vorbis') {
1268	$vorbis_offset--;
1269	$found_vorbis = true;
1270	break;
1271	}
1272	}
1273	if ($found_vorbis) {
1274	if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.ogg.php', __FILE__, false)) {
1275	$vorbis_fileinfo = array();
1276	$oggpageinfo['page_seqno'] = 0;
1277	getid3_ogg::ParseVorbisPageHeader($trackarray['CodecPrivate'], $vorbis_offset, $vorbis_fileinfo, $oggpageinfo);
1278	$ThisFileInfo['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $vorbis_fileinfo;
1279	if (!empty($vorbis_fileinfo['error'])) {
1280	foreach ($vorbis_fileinfo['error'] as $newerror) {
1281	$this->warnings[] = 'getid3_ogg() says: ['.$newerror.']';
1282	}
1283	}
1284	if (!empty($vorbis_fileinfo['warning'])) {
1285	foreach ($vorbis_fileinfo['warning'] as $newerror) {
1286	$this->warnings[] = 'getid3_ogg() says: ['.$newerror.']';
1287	}
1288	}
1289	if (isset($vorbis_fileinfo['audio']) && is_array($vorbis_fileinfo['audio'])) {
1290	foreach ($vorbis_fileinfo['audio'] as $key => $value) {
1291	$track_info[$key] = $value;
1292	}
1293	}
1294	if (@$vorbis_fileinfo['ogg']['bitrate_average']) {
1295	$track_info['bitrate'] = $vorbis_fileinfo['ogg']['bitrate_average'];
1296	} elseif (@$vorbis_fileinfo['ogg']['bitrate_nominal']) {
1297	$track_info['bitrate'] = $vorbis_fileinfo['ogg']['bitrate_nominal'];
1298	}
1299	unset($vorbis_fileinfo);
1300	unset($oggpageinfo);
1301	} else {
1302	$this->warnings[] = 'Unable to parse audio data['.__LINE__.'] because cannot include "module.audio.ogg.php"';
1303	}
1304	} else {
1305	}
1306	} else {
1307	}
1308	break;
1309
1310	default:
1311	$this->warnings[] = 'Unhandled audio type "'.@$trackarray[$this->EBMLidName(EBML_ID_CODECID)].'"';
1312	break;
1313	}
1314
1315
1316	$ThisFileInfo['audio']['streams'][] = $track_info;
1317	if (isset($track_info['dataformat']) && empty($ThisFileInfo['audio']['dataformat'])) {
1318	foreach ($track_info as $key => $value) {
1319	$ThisFileInfo['audio'][$key] = $value;
1320	}
1321	}
1322	break;
1323	default:
1324	// ignore, do nothing
1325	break;
1326	}
1327	}
1328	}
1329
1330	if ($this->hide_clusters) {
1331	// too much data returned that is usually not useful
1332	if (isset($ThisFileInfo['matroska']['segments']) && is_array($ThisFileInfo['matroska']['segments'])) {
1333	foreach ($ThisFileInfo['matroska']['segments'] as $key => $segmentsarray) {
1334	if ($segmentsarray['id'] == EBML_ID_CLUSTER) {
1335	unset($ThisFileInfo['matroska']['segments'][$key]);
1336	}
1337	}
1338	}
1339	if (isset($ThisFileInfo['matroska']['seek']) && is_array($ThisFileInfo['matroska']['seek'])) {
1340	foreach ($ThisFileInfo['matroska']['seek'] as $key => $seekarray) {
1341	if ($seekarray['target_id'] == EBML_ID_CLUSTER) {
1342	unset($ThisFileInfo['matroska']['seek'][$key]);
1343	}
1344	}
1345	}
1346	//unset($ThisFileInfo['matroska']['cluster']);
1347	//unset($ThisFileInfo['matroska']['track_data_offsets']);
1348	}
1349
1350	if (!empty($ThisFileInfo['video']['streams'])) {
1351	$ThisFileInfo['mime_type'] = 'video/x-matroska';
1352	} elseif (!empty($ThisFileInfo['video']['streams'])) {
1353	$ThisFileInfo['mime_type'] = 'audio/x-matroska';
1354	} elseif (isset($ThisFileInfo['mime_type'])) {
1355	unset($ThisFileInfo['mime_type']);
1356	}
1357
1358	foreach ($this->warnings as $key => $value) {
1359	$ThisFileInfo['warning'][] = $value;
1360	}
1361
1362	return true;
1363	}
1364
1365
1366	///////////////////////////////////////
1367
1368
1369	function EnsureBufferHasEnoughData(&$fd, &$EBMLdata, &$offset, &$EBMLdata_offset) {
1370	$min_data = 1024;
1371	if ($offset > 2147450880) { // 2^31 - 2^15 (2G-32k)
1372	$offset = pow(2,63);
1373	return false;
1374	} elseif (($offset - $EBMLdata_offset) >= (strlen($EBMLdata) - $min_data)) {
1375	fseek($fd, $offset, SEEK_SET);
1376	$EBMLdata_offset = ftell($fd);
1377	$EBMLdata = fread($fd, $this->read_buffer_size);
1378	}
1379	return true;
1380	}
1381
1382	function readEBMLint(&$string, &$offset, $dataoffset=0) {
1383	$actual_offset = $offset - $dataoffset;
1384	if ($offset > 2147450880) { // 2^31 - 2^15 (2G-32k)
1385	$this->warnings[] = 'aborting readEBMLint() because $offset larger than 2GB';
1386	return false;
1387	} elseif ($actual_offset >= strlen($string)) {
1388	$this->warnings[] = '$actual_offset > $string in readEBMLint($string['.strlen($string).'], '.$offset.', '.$dataoffset.')';
1389	return false;
1390	} elseif ($actual_offset < 0) {
1391	$this->warnings[] = '$actual_offset < 0 in readEBMLint($string['.strlen($string).'], '.$offset.', '.$dataoffset.')';
1392	return false;
1393	}
1394	$first_byte_int = ord($string{$actual_offset});
1395	if (0x80 & $first_byte_int) {
1396	$length = 1;
1397	} elseif (0x40 & $first_byte_int) {
1398	$length = 2;
1399	} elseif (0x20 & $first_byte_int) {
1400	$length = 3;
1401	} elseif (0x10 & $first_byte_int) {
1402	$length = 4;
1403	} elseif (0x08 & $first_byte_int) {
1404	$length = 5;
1405	} elseif (0x04 & $first_byte_int) {
1406	$length = 6;
1407	} elseif (0x02 & $first_byte_int) {
1408	$length = 7;
1409	} elseif (0x01 & $first_byte_int) {
1410	$length = 8;
1411	} else {
1412	$offset = pow(2,63); // abort processing, skip to end of file
1413	$this->warnings[] = 'invalid EBML integer (leading 0x00) at '.$offset;
1414	return false;
1415	}
1416	$int_value = $this->EBML2Int(substr($string, $actual_offset, $length));
1417	$offset += $length;
1418	return $int_value;
1419	}
1420
1421	function EBML2Int($EBMLstring) {
1422	// http://matroska.org/specs/
1423
1424	// Element ID coded with an UTF-8 like system:
1425	// 1xxx xxxx - Class A IDs (2^7 -2 possible values) (base 0x8X)
1426	// 01xx xxxx xxxx xxxx - Class B IDs (2^14-2 possible values) (base 0x4X 0xXX)
1427	// 001x xxxx xxxx xxxx xxxx xxxx - Class C IDs (2^21-2 possible values) (base 0x2X 0xXX 0xXX)
1428	// 0001 xxxx xxxx xxxx xxxx xxxx xxxx xxxx - Class D IDs (2^28-2 possible values) (base 0x1X 0xXX 0xXX 0xXX)
1429	// Values with all x at 0 and 1 are reserved (hence the -2).
1430
1431	// Data size, in octets, is also coded with an UTF-8 like system :
1432	// 1xxx xxxx - value 0 to 2^7-2
1433	// 01xx xxxx xxxx xxxx - value 0 to 2^14-2
1434	// 001x xxxx xxxx xxxx xxxx xxxx - value 0 to 2^21-2
1435	// 0001 xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^28-2
1436	// 0000 1xxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^35-2
1437	// 0000 01xx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^42-2
1438	// 0000 001x xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^49-2
1439	// 0000 0001 xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^56-2
1440
1441	$first_byte_int = ord($EBMLstring{0});
1442	if (0x80 & $first_byte_int) {
1443	$EBMLstring{0} = chr($first_byte_int & 0x7F);
1444	} elseif (0x40 & $first_byte_int) {
1445	$EBMLstring{0} = chr($first_byte_int & 0x3F);
1446	} elseif (0x20 & $first_byte_int) {
1447	$EBMLstring{0} = chr($first_byte_int & 0x1F);
1448	} elseif (0x10 & $first_byte_int) {
1449	$EBMLstring{0} = chr($first_byte_int & 0x0F);
1450	} elseif (0x08 & $first_byte_int) {
1451	$EBMLstring{0} = chr($first_byte_int & 0x07);
1452	} elseif (0x04 & $first_byte_int) {
1453	$EBMLstring{0} = chr($first_byte_int & 0x03);
1454	} elseif (0x02 & $first_byte_int) {
1455	$EBMLstring{0} = chr($first_byte_int & 0x01);
1456	} elseif (0x01 & $first_byte_int) {
1457	$EBMLstring{0} = chr($first_byte_int & 0x00);
1458	} else {
1459	return false;
1460	}
1461	return getid3_lib::BigEndian2Int($EBMLstring);
1462	}
1463
1464
1465	function EBMLdate2unix($EBMLdatestamp) {
1466	// Date - signed 8 octets integer in nanoseconds with 0 indicating the precise beginning of the millennium (at 2001-01-01T00:00:00,000000000 UTC)
1467	// 978307200 == mktime(0, 0, 0, 1, 1, 2001) == January 1, 2001 12:00:00am UTC
1468	return round(($EBMLdatestamp / 1000000000) + 978307200);
1469	}
1470
1471
1472	function MatroskaBlockLacingType($lacingtype) {
1473	// http://matroska.org/technical/specs/index.html#block_structure
1474	static $MatroskaBlockLacingType = array();
1475	if (empty($MatroskaBlockLacingType)) {
1476	$MatroskaBlockLacingType[0x00] = 'no lacing';
1477	$MatroskaBlockLacingType[0x01] = 'Xiph lacing';
1478	$MatroskaBlockLacingType[0x02] = 'fixed-size lacing';
1479	$MatroskaBlockLacingType[0x03] = 'EBML lacing';
1480	}
1481	return (isset($MatroskaBlockLacingType[$lacingtype]) ? $MatroskaBlockLacingType[$lacingtype] : $lacingtype);
1482	}
1483
1484	function MatroskaCodecIDtoCommonName($codecid) {
1485	// http://www.matroska.org/technical/specs/codecid/index.html
1486	static $MatroskaCodecIDlist = array();
1487	if (empty($MatroskaCodecIDlist)) {
1488	$MatroskaCodecIDlist['A_AAC'] = 'aac';
1489	$MatroskaCodecIDlist['A_AAC/MPEG2/LC'] = 'aac';
1490	$MatroskaCodecIDlist['A_AC3'] = 'ac3';
1491	$MatroskaCodecIDlist['A_DTS'] = 'dts';
1492	$MatroskaCodecIDlist['A_FLAC'] = 'flac';
1493	$MatroskaCodecIDlist['A_MPEG/L1'] = 'mp1';
1494	$MatroskaCodecIDlist['A_MPEG/L2'] = 'mp2';
1495	$MatroskaCodecIDlist['A_MPEG/L3'] = 'mp3';
1496	$MatroskaCodecIDlist['A_PCM/INT/LIT'] = 'pcm'; // PCM Integer Little Endian
1497	$MatroskaCodecIDlist['A_PCM/INT/BIG'] = 'pcm'; // PCM Integer Big Endian
1498	$MatroskaCodecIDlist['A_QUICKTIME/QDMC'] = 'quicktime'; // Quicktime: QDesign Music
1499	$MatroskaCodecIDlist['A_QUICKTIME/QDM2'] = 'quicktime'; // Quicktime: QDesign Music v2
1500	$MatroskaCodecIDlist['A_VORBIS'] = 'vorbis';
1501	$MatroskaCodecIDlist['V_MPEG1'] = 'mpeg';
1502	$MatroskaCodecIDlist['V_THEORA'] = 'theora';
1503	$MatroskaCodecIDlist['V_REAL/RV40'] = 'real';
1504	$MatroskaCodecIDlist['V_REAL/RV10'] = 'real';
1505	$MatroskaCodecIDlist['V_REAL/RV20'] = 'real';
1506	$MatroskaCodecIDlist['V_REAL/RV30'] = 'real';
1507	$MatroskaCodecIDlist['V_QUICKTIME'] = 'quicktime'; // Quicktime
1508	$MatroskaCodecIDlist['V_MPEG4/ISO/AP'] = 'mpeg4';
1509	$MatroskaCodecIDlist['V_MPEG4/ISO/ASP'] = 'mpeg4';
1510	$MatroskaCodecIDlist['V_MPEG4/ISO/AVC'] = 'h264';
1511	$MatroskaCodecIDlist['V_MPEG4/ISO/SP'] = 'mpeg4';
1512	}
1513	return (isset($MatroskaCodecIDlist[$codecid]) ? $MatroskaCodecIDlist[$codecid] : $codecid);
1514	}
1515
1516	function EBMLidName($value) {
1517	static $EBMLidList = array();
1518	if (empty($EBMLidList)) {
1519	$EBMLidList[EBML_ID_ASPECTRATIOTYPE] = 'AspectRatioType';
1520	$EBMLidList[EBML_ID_ATTACHEDFILE] = 'AttachedFile';
1521	$EBMLidList[EBML_ID_ATTACHMENTLINK] = 'AttachmentLink';
1522	$EBMLidList[EBML_ID_ATTACHMENTS] = 'Attachments';
1523	$EBMLidList[EBML_ID_ATTACHMENTUID] = 'AttachmentUID';
1524	$EBMLidList[EBML_ID_AUDIO] = 'Audio';
1525	$EBMLidList[EBML_ID_BITDEPTH] = 'BitDepth';
1526	$EBMLidList[EBML_ID_CHANNELPOSITIONS] = 'ChannelPositions';
1527	$EBMLidList[EBML_ID_CHANNELS] = 'Channels';
1528	$EBMLidList[EBML_ID_CHAPCOUNTRY] = 'ChapCountry';
1529	$EBMLidList[EBML_ID_CHAPLANGUAGE] = 'ChapLanguage';
1530	$EBMLidList[EBML_ID_CHAPPROCESS] = 'ChapProcess';
1531	$EBMLidList[EBML_ID_CHAPPROCESSCODECID] = 'ChapProcessCodecID';
1532	$EBMLidList[EBML_ID_CHAPPROCESSCOMMAND] = 'ChapProcessCommand';
1533	$EBMLidList[EBML_ID_CHAPPROCESSDATA] = 'ChapProcessData';
1534	$EBMLidList[EBML_ID_CHAPPROCESSPRIVATE] = 'ChapProcessPrivate';
1535	$EBMLidList[EBML_ID_CHAPPROCESSTIME] = 'ChapProcessTime';
1536	$EBMLidList[EBML_ID_CHAPSTRING] = 'ChapString';
1537	$EBMLidList[EBML_ID_CHAPTERATOM] = 'ChapterAtom';
1538	$EBMLidList[EBML_ID_CHAPTERDISPLAY] = 'ChapterDisplay';
1539	$EBMLidList[EBML_ID_CHAPTERFLAGENABLED] = 'ChapterFlagEnabled';
1540	$EBMLidList[EBML_ID_CHAPTERFLAGHIDDEN] = 'ChapterFlagHidden';
1541	$EBMLidList[EBML_ID_CHAPTERPHYSICALEQUIV] = 'ChapterPhysicalEquiv';
1542	$EBMLidList[EBML_ID_CHAPTERS] = 'Chapters';
1543	$EBMLidList[EBML_ID_CHAPTERSEGMENTEDITIONUID] = 'ChapterSegmentEditionUID';
1544	$EBMLidList[EBML_ID_CHAPTERSEGMENTUID] = 'ChapterSegmentUID';
1545	$EBMLidList[EBML_ID_CHAPTERTIMEEND] = 'ChapterTimeEnd';
1546	$EBMLidList[EBML_ID_CHAPTERTIMESTART] = 'ChapterTimeStart';
1547	$EBMLidList[EBML_ID_CHAPTERTRACK] = 'ChapterTrack';
1548	$EBMLidList[EBML_ID_CHAPTERTRACKNUMBER] = 'ChapterTrackNumber';
1549	$EBMLidList[EBML_ID_CHAPTERTRANSLATE] = 'ChapterTranslate';
1550	$EBMLidList[EBML_ID_CHAPTERTRANSLATECODEC] = 'ChapterTranslateCodec';
1551	$EBMLidList[EBML_ID_CHAPTERTRANSLATEEDITIONUID] = 'ChapterTranslateEditionUID';
1552	$EBMLidList[EBML_ID_CHAPTERTRANSLATEID] = 'ChapterTranslateID';
1553	$EBMLidList[EBML_ID_CHAPTERUID] = 'ChapterUID';
1554	$EBMLidList[EBML_ID_CLUSTER] = 'Cluster';
1555	$EBMLidList[EBML_ID_CLUSTERBLOCK] = 'ClusterBlock';
1556	$EBMLidList[EBML_ID_CLUSTERBLOCKADDID] = 'ClusterBlockAddID';
1557	$EBMLidList[EBML_ID_CLUSTERBLOCKADDITIONAL] = 'ClusterBlockAdditional';
1558	$EBMLidList[EBML_ID_CLUSTERBLOCKADDITIONID] = 'ClusterBlockAdditionID';
1559	$EBMLidList[EBML_ID_CLUSTERBLOCKADDITIONS] = 'ClusterBlockAdditions';
1560	$EBMLidList[EBML_ID_CLUSTERBLOCKDURATION] = 'ClusterBlockDuration';
1561	$EBMLidList[EBML_ID_CLUSTERBLOCKGROUP] = 'ClusterBlockGroup';
1562	$EBMLidList[EBML_ID_CLUSTERBLOCKMORE] = 'ClusterBlockMore';
1563	$EBMLidList[EBML_ID_CLUSTERBLOCKVIRTUAL] = 'ClusterBlockVirtual';
1564	$EBMLidList[EBML_ID_CLUSTERCODECSTATE] = 'ClusterCodecState';
1565	$EBMLidList[EBML_ID_CLUSTERDELAY] = 'ClusterDelay';
1566	$EBMLidList[EBML_ID_CLUSTERDURATION] = 'ClusterDuration';
1567	$EBMLidList[EBML_ID_CLUSTERENCRYPTEDBLOCK] = 'ClusterEncryptedBlock';
1568	$EBMLidList[EBML_ID_CLUSTERFRAMENUMBER] = 'ClusterFrameNumber';
1569	$EBMLidList[EBML_ID_CLUSTERLACENUMBER] = 'ClusterLaceNumber';
1570	$EBMLidList[EBML_ID_CLUSTERPOSITION] = 'ClusterPosition';
1571	$EBMLidList[EBML_ID_CLUSTERPREVSIZE] = 'ClusterPrevSize';
1572	$EBMLidList[EBML_ID_CLUSTERREFERENCEBLOCK] = 'ClusterReferenceBlock';
1573	$EBMLidList[EBML_ID_CLUSTERREFERENCEPRIORITY] = 'ClusterReferencePriority';
1574	$EBMLidList[EBML_ID_CLUSTERREFERENCEVIRTUAL] = 'ClusterReferenceVirtual';
1575	$EBMLidList[EBML_ID_CLUSTERSILENTTRACKNUMBER] = 'ClusterSilentTrackNumber';
1576	$EBMLidList[EBML_ID_CLUSTERSILENTTRACKS] = 'ClusterSilentTracks';
1577	$EBMLidList[EBML_ID_CLUSTERSIMPLEBLOCK] = 'ClusterSimpleBlock';
1578	$EBMLidList[EBML_ID_CLUSTERTIMECODE] = 'ClusterTimecode';
1579	$EBMLidList[EBML_ID_CLUSTERTIMESLICE] = 'ClusterTimeSlice';
1580	$EBMLidList[EBML_ID_CODECDECODEALL] = 'CodecDecodeAll';
1581	$EBMLidList[EBML_ID_CODECDOWNLOADURL] = 'CodecDownloadURL';
1582	$EBMLidList[EBML_ID_CODECID] = 'CodecID';
1583	$EBMLidList[EBML_ID_CODECINFOURL] = 'CodecInfoURL';
1584	$EBMLidList[EBML_ID_CODECNAME] = 'CodecName';
1585	$EBMLidList[EBML_ID_CODECPRIVATE] = 'CodecPrivate';
1586	$EBMLidList[EBML_ID_CODECSETTINGS] = 'CodecSettings';
1587	$EBMLidList[EBML_ID_COLOURSPACE] = 'ColourSpace';
1588	$EBMLidList[EBML_ID_CONTENTCOMPALGO] = 'ContentCompAlgo';
1589	$EBMLidList[EBML_ID_CONTENTCOMPRESSION] = 'ContentCompression';
1590	$EBMLidList[EBML_ID_CONTENTCOMPSETTINGS] = 'ContentCompSettings';
1591	$EBMLidList[EBML_ID_CONTENTENCALGO] = 'ContentEncAlgo';
1592	$EBMLidList[EBML_ID_CONTENTENCKEYID] = 'ContentEncKeyID';
1593	$EBMLidList[EBML_ID_CONTENTENCODING] = 'ContentEncoding';
1594	$EBMLidList[EBML_ID_CONTENTENCODINGORDER] = 'ContentEncodingOrder';
1595	$EBMLidList[EBML_ID_CONTENTENCODINGS] = 'ContentEncodings';
1596	$EBMLidList[EBML_ID_CONTENTENCODINGSCOPE] = 'ContentEncodingScope';
1597	$EBMLidList[EBML_ID_CONTENTENCODINGTYPE] = 'ContentEncodingType';
1598	$EBMLidList[EBML_ID_CONTENTENCRYPTION] = 'ContentEncryption';
1599	$EBMLidList[EBML_ID_CONTENTSIGALGO] = 'ContentSigAlgo';
1600	$EBMLidList[EBML_ID_CONTENTSIGHASHALGO] = 'ContentSigHashAlgo';
1601	$EBMLidList[EBML_ID_CONTENTSIGKEYID] = 'ContentSigKeyID';
1602	$EBMLidList[EBML_ID_CONTENTSIGNATURE] = 'ContentSignature';
1603	$EBMLidList[EBML_ID_CRC32] = 'CRC32';
1604	$EBMLidList[EBML_ID_CUEBLOCKNUMBER] = 'CueBlockNumber';
1605	$EBMLidList[EBML_ID_CUECLUSTERPOSITION] = 'CueClusterPosition';
1606	$EBMLidList[EBML_ID_CUECODECSTATE] = 'CueCodecState';
1607	$EBMLidList[EBML_ID_CUEPOINT] = 'CuePoint';
1608	$EBMLidList[EBML_ID_CUEREFCLUSTER] = 'CueRefCluster';
1609	$EBMLidList[EBML_ID_CUEREFCODECSTATE] = 'CueRefCodecState';
1610	$EBMLidList[EBML_ID_CUEREFERENCE] = 'CueReference';
1611	$EBMLidList[EBML_ID_CUEREFNUMBER] = 'CueRefNumber';
1612	$EBMLidList[EBML_ID_CUEREFTIME] = 'CueRefTime';
1613	$EBMLidList[EBML_ID_CUES] = 'Cues';
1614	$EBMLidList[EBML_ID_CUETIME] = 'CueTime';
1615	$EBMLidList[EBML_ID_CUETRACK] = 'CueTrack';
1616	$EBMLidList[EBML_ID_CUETRACKPOSITIONS] = 'CueTrackPositions';
1617	$EBMLidList[EBML_ID_DATEUTC] = 'DateUTC';
1618	$EBMLidList[EBML_ID_DEFAULTDURATION] = 'DefaultDuration';
1619	$EBMLidList[EBML_ID_DISPLAYHEIGHT] = 'DisplayHeight';
1620	$EBMLidList[EBML_ID_DISPLAYUNIT] = 'DisplayUnit';
1621	$EBMLidList[EBML_ID_DISPLAYWIDTH] = 'DisplayWidth';
1622	$EBMLidList[EBML_ID_DOCTYPE] = 'DocType';
1623	$EBMLidList[EBML_ID_DOCTYPEREADVERSION] = 'DocTypeReadVersion';
1624	$EBMLidList[EBML_ID_DOCTYPEVERSION] = 'DocTypeVersion';
1625	$EBMLidList[EBML_ID_DURATION] = 'Duration';
1626	$EBMLidList[EBML_ID_EBMLMAXIDLENGTH] = 'EBMLMaxIDLength';
1627	$EBMLidList[EBML_ID_EBMLMAXSIZELENGTH] = 'EBMLMaxSizeLength';
1628	$EBMLidList[EBML_ID_EBMLREADVERSION] = 'EBMLReadVersion';
1629	$EBMLidList[EBML_ID_EBMLVERSION] = 'EBMLVersion';
1630	$EBMLidList[EBML_ID_EDITIONENTRY] = 'EditionEntry';
1631	$EBMLidList[EBML_ID_EDITIONFLAGDEFAULT] = 'EditionFlagDefault';
1632	$EBMLidList[EBML_ID_EDITIONFLAGHIDDEN] = 'EditionFlagHidden';
1633	$EBMLidList[EBML_ID_EDITIONFLAGORDERED] = 'EditionFlagOrdered';
1634	$EBMLidList[EBML_ID_EDITIONUID] = 'EditionUID';
1635	$EBMLidList[EBML_ID_FILEDATA] = 'FileData';
1636	$EBMLidList[EBML_ID_FILEDESCRIPTION] = 'FileDescription';
1637	$EBMLidList[EBML_ID_FILEMIMETYPE] = 'FileMimeType';
1638	$EBMLidList[EBML_ID_FILENAME] = 'FileName';
1639	$EBMLidList[EBML_ID_FILEREFERRAL] = 'FileReferral';
1640	$EBMLidList[EBML_ID_FILEUID] = 'FileUID';
1641	$EBMLidList[EBML_ID_FLAGDEFAULT] = 'FlagDefault';
1642	$EBMLidList[EBML_ID_FLAGENABLED] = 'FlagEnabled';
1643	$EBMLidList[EBML_ID_FLAGFORCED] = 'FlagForced';
1644	$EBMLidList[EBML_ID_FLAGINTERLACED] = 'FlagInterlaced';
1645	$EBMLidList[EBML_ID_FLAGLACING] = 'FlagLacing';
1646	$EBMLidList[EBML_ID_GAMMAVALUE] = 'GammaValue';
1647	$EBMLidList[EBML_ID_INFO] = 'Info';
1648	$EBMLidList[EBML_ID_LANGUAGE] = 'Language';
1649	$EBMLidList[EBML_ID_MAXBLOCKADDITIONID] = 'MaxBlockAdditionID';
1650	$EBMLidList[EBML_ID_MAXCACHE] = 'MaxCache';
1651	$EBMLidList[EBML_ID_MINCACHE] = 'MinCache';
1652	$EBMLidList[EBML_ID_MUXINGAPP] = 'MuxingApp';
1653	$EBMLidList[EBML_ID_NAME] = 'Name';
1654	$EBMLidList[EBML_ID_NEXTFILENAME] = 'NextFilename';
1655	$EBMLidList[EBML_ID_NEXTUID] = 'NextUID';
1656	$EBMLidList[EBML_ID_OUTPUTSAMPLINGFREQUENCY] = 'OutputSamplingFrequency';
1657	$EBMLidList[EBML_ID_PIXELCROPBOTTOM] = 'PixelCropBottom';
1658	$EBMLidList[EBML_ID_PIXELCROPLEFT] = 'PixelCropLeft';
1659	$EBMLidList[EBML_ID_PIXELCROPRIGHT] = 'PixelCropRight';
1660	$EBMLidList[EBML_ID_PIXELCROPTOP] = 'PixelCropTop';
1661	$EBMLidList[EBML_ID_PIXELHEIGHT] = 'PixelHeight';
1662	$EBMLidList[EBML_ID_PIXELWIDTH] = 'PixelWidth';
1663	$EBMLidList[EBML_ID_PREVFILENAME] = 'PrevFilename';
1664	$EBMLidList[EBML_ID_PREVUID] = 'PrevUID';
1665	$EBMLidList[EBML_ID_SAMPLINGFREQUENCY] = 'SamplingFrequency';
1666	$EBMLidList[EBML_ID_SEEK] = 'Seek';
1667	$EBMLidList[EBML_ID_SEEKHEAD] = 'SeekHead';
1668	$EBMLidList[EBML_ID_SEEKID] = 'SeekID';
1669	$EBMLidList[EBML_ID_SEEKPOSITION] = 'SeekPosition';
1670	$EBMLidList[EBML_ID_SEGMENTFAMILY] = 'SegmentFamily';
1671	$EBMLidList[EBML_ID_SEGMENTFILENAME] = 'SegmentFilename';
1672	$EBMLidList[EBML_ID_SEGMENTUID] = 'SegmentUID';
1673	$EBMLidList[EBML_ID_SIMPLETAG] = 'SimpleTag';
1674	$EBMLidList[EBML_ID_CLUSTERSLICES] = 'ClusterSlices';
1675	$EBMLidList[EBML_ID_STEREOMODE] = 'StereoMode';
1676	$EBMLidList[EBML_ID_TAG] = 'Tag';
1677	$EBMLidList[EBML_ID_TAGBINARY] = 'TagBinary';
1678	$EBMLidList[EBML_ID_TAGCHAPTERUID] = 'TagChapterUID';
1679	$EBMLidList[EBML_ID_TAGDEFAULT] = 'TagDefault';
1680	$EBMLidList[EBML_ID_TAGEDITIONUID] = 'TagEditionUID';
1681	$EBMLidList[EBML_ID_TAGLANGUAGE] = 'TagLanguage';
1682	$EBMLidList[EBML_ID_TAGNAME] = 'TagName';
1683	$EBMLidList[EBML_ID_TAGTRACKUID] = 'TagTrackUID';
1684	$EBMLidList[EBML_ID_TAGS] = 'Tags';
1685	$EBMLidList[EBML_ID_TAGSTRING] = 'TagString';
1686	$EBMLidList[EBML_ID_TARGETS] = 'Targets';
1687	$EBMLidList[EBML_ID_TARGETTYPE] = 'TargetType';
1688	$EBMLidList[EBML_ID_TARGETTYPEVALUE] = 'TargetTypeValue';
1689	$EBMLidList[EBML_ID_TIMECODESCALE] = 'TimecodeScale';
1690	$EBMLidList[EBML_ID_TITLE] = 'Title';
1691	$EBMLidList[EBML_ID_TRACKENTRY] = 'TrackEntry';
1692	$EBMLidList[EBML_ID_TRACKNUMBER] = 'TrackNumber';
1693	$EBMLidList[EBML_ID_TRACKOFFSET] = 'TrackOffset';
1694	$EBMLidList[EBML_ID_TRACKOVERLAY] = 'TrackOverlay';
1695	$EBMLidList[EBML_ID_TRACKS] = 'Tracks';
1696	$EBMLidList[EBML_ID_TRACKTIMECODESCALE] = 'TrackTimecodeScale';
1697	$EBMLidList[EBML_ID_TRACKTRANSLATE] = 'TrackTranslate';
1698	$EBMLidList[EBML_ID_TRACKTRANSLATECODEC] = 'TrackTranslateCodec';
1699	$EBMLidList[EBML_ID_TRACKTRANSLATEEDITIONUID] = 'TrackTranslateEditionUID';
1700	$EBMLidList[EBML_ID_TRACKTRANSLATETRACKID] = 'TrackTranslateTrackID';
1701	$EBMLidList[EBML_ID_TRACKTYPE] = 'TrackType';
1702	$EBMLidList[EBML_ID_TRACKUID] = 'TrackUID';
1703	$EBMLidList[EBML_ID_VIDEO] = 'Video';
1704	$EBMLidList[EBML_ID_VOID] = 'Void';
1705	$EBMLidList[EBML_ID_WRITINGAPP] = 'WritingApp';
1706	}
1707	return (isset($EBMLidList[$value]) ? $EBMLidList[$value] : dechex($value));
1708	}
1709
1710	}
1711
1712	?>

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source: extensions/charlies_content/getid3/getid3/module.audio-video.matroska.php @ 9130

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