2 /////////////////////////////////////////////////////////////////
3 /// getID3() by James Heinrich <info@getid3.org> //
4 // available at http://getid3.sourceforge.net //
5 // or http://www.getid3.org //
6 // also https://github.com/JamesHeinrich/getID3 //
7 /////////////////////////////////////////////////////////////////
8 // See readme.txt for more details //
9 /////////////////////////////////////////////////////////////////
11 // module.audio-video.matriska.php //
12 // module for analyzing Matroska containers //
13 // dependencies: NONE //
15 /////////////////////////////////////////////////////////////////
18 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.
19 define('EBML_ID_SEEKHEAD', 0x014D9B74); // [11][4D][9B][74] -- Contains the position of other level 1 elements.
20 define('EBML_ID_TAGS', 0x0254C367); // [12][54][C3][67] -- Element containing elements specific to Tracks/Chapters. A list of valid tags can be found <http://www.matroska.org/technical/specs/tagging/index.html>.
21 define('EBML_ID_INFO', 0x0549A966); // [15][49][A9][66] -- Contains miscellaneous general information and statistics on the file.
22 define('EBML_ID_TRACKS', 0x0654AE6B); // [16][54][AE][6B] -- A top-level block of information with many tracks described.
23 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.
24 define('EBML_ID_ATTACHMENTS', 0x0941A469); // [19][41][A4][69] -- Contain attached files.
25 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.
26 define('EBML_ID_CUES', 0x0C53BB6B); // [1C][53][BB][6B] -- A top-level element to speed seeking access. All entries are local to the segment.
27 define('EBML_ID_CLUSTER', 0x0F43B675); // [1F][43][B6][75] -- The lower level element containing the (monolithic) Block structure.
28 define('EBML_ID_LANGUAGE', 0x02B59C); // [22][B5][9C] -- Specifies the language of the track in the Matroska languages form.
29 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).
30 define('EBML_ID_DEFAULTDURATION', 0x03E383); // [23][E3][83] -- Number of nanoseconds (i.e. not scaled) per frame.
31 define('EBML_ID_CODECNAME', 0x058688); // [25][86][88] -- A human-readable string specifying the codec.
32 define('EBML_ID_CODECDOWNLOADURL', 0x06B240); // [26][B2][40] -- A URL to download about the codec used.
33 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).
34 define('EBML_ID_COLOURSPACE', 0x0EB524); // [2E][B5][24] -- Same value as in AVI (32 bits).
35 define('EBML_ID_GAMMAVALUE', 0x0FB523); // [2F][B5][23] -- Gamma Value.
36 define('EBML_ID_CODECSETTINGS', 0x1A9697); // [3A][96][97] -- A string describing the encoding setting used.
37 define('EBML_ID_CODECINFOURL', 0x1B4040); // [3B][40][40] -- A URL to find information about the codec used.
38 define('EBML_ID_PREVFILENAME', 0x1C83AB); // [3C][83][AB] -- An escaped filename corresponding to the previous segment.
39 define('EBML_ID_PREVUID', 0x1CB923); // [3C][B9][23] -- A unique ID to identify the previous chained segment (128 bits).
40 define('EBML_ID_NEXTFILENAME', 0x1E83BB); // [3E][83][BB] -- An escaped filename corresponding to the next segment.
41 define('EBML_ID_NEXTUID', 0x1EB923); // [3E][B9][23] -- A unique ID to identify the next chained segment (128 bits).
42 define('EBML_ID_CONTENTCOMPALGO', 0x0254); // [42][54] -- The compression algorithm used. Algorithms that have been specified so far are:
43 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.
44 define('EBML_ID_DOCTYPE', 0x0282); // [42][82] -- A string that describes the type of document that follows this EBML header ('matroska' in our case).
45 define('EBML_ID_DOCTYPEREADVERSION', 0x0285); // [42][85] -- The minimum DocType version an interpreter has to support to read this file.
46 define('EBML_ID_EBMLVERSION', 0x0286); // [42][86] -- The version of EBML parser used to create the file.
47 define('EBML_ID_DOCTYPEVERSION', 0x0287); // [42][87] -- The version of DocType interpreter used to create the file.
48 define('EBML_ID_EBMLMAXIDLENGTH', 0x02F2); // [42][F2] -- The maximum length of the IDs you'll find in this file (4 or less in Matroska).
49 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.
50 define('EBML_ID_EBMLREADVERSION', 0x02F7); // [42][F7] -- The minimum EBML version a parser has to support to read this file.
51 define('EBML_ID_CHAPLANGUAGE', 0x037C); // [43][7C] -- The languages corresponding to the string, in the bibliographic ISO-639-2 form.
52 define('EBML_ID_CHAPCOUNTRY', 0x037E); // [43][7E] -- The countries corresponding to the string, same 2 octets as in Internet domains.
53 define('EBML_ID_SEGMENTFAMILY', 0x0444); // [44][44] -- A randomly generated unique ID that all segments related to each other must use (128 bits).
54 define('EBML_ID_DATEUTC', 0x0461); // [44][61] -- Date of the origin of timecode (value 0), i.e. production date.
55 define('EBML_ID_TAGLANGUAGE', 0x047A); // [44][7A] -- Specifies the language of the tag specified, in the Matroska languages form.
56 define('EBML_ID_TAGDEFAULT', 0x0484); // [44][84] -- Indication to know if this is the default/original language to use for the given tag.
57 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.
58 define('EBML_ID_TAGSTRING', 0x0487); // [44][87] -- The value of the Tag.
59 define('EBML_ID_DURATION', 0x0489); // [44][89] -- Duration of the segment (based on TimecodeScale).
60 define('EBML_ID_CHAPPROCESSPRIVATE', 0x050D); // [45][0D] -- Some optional data attached to the ChapProcessCodecID information. For ChapProcessCodecID = 1, it is the "DVD level" equivalent.
61 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.
62 define('EBML_ID_TAGNAME', 0x05A3); // [45][A3] -- The name of the Tag that is going to be stored.
63 define('EBML_ID_EDITIONENTRY', 0x05B9); // [45][B9] -- Contains all information about a segment edition.
64 define('EBML_ID_EDITIONUID', 0x05BC); // [45][BC] -- A unique ID to identify the edition. It's useful for tagging an edition.
65 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).
66 define('EBML_ID_EDITIONFLAGDEFAULT', 0x05DB); // [45][DB] -- If a flag is set (1) the edition should be used as the default one.
67 define('EBML_ID_EDITIONFLAGORDERED', 0x05DD); // [45][DD] -- Specify if the chapters can be defined multiple times and the order to play them is enforced.
68 define('EBML_ID_FILEDATA', 0x065C); // [46][5C] -- The data of the file.
69 define('EBML_ID_FILEMIMETYPE', 0x0660); // [46][60] -- MIME type of the file.
70 define('EBML_ID_FILENAME', 0x066E); // [46][6E] -- Filename of the attached file.
71 define('EBML_ID_FILEREFERRAL', 0x0675); // [46][75] -- A binary value that a track/codec can refer to when the attachment is needed.
72 define('EBML_ID_FILEDESCRIPTION', 0x067E); // [46][7E] -- A human-friendly name for the attached file.
73 define('EBML_ID_FILEUID', 0x06AE); // [46][AE] -- Unique ID representing the file, as random as possible.
74 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:
75 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.
76 define('EBML_ID_CONTENTSIGNATURE', 0x07E3); // [47][E3] -- A cryptographic signature of the contents.
77 define('EBML_ID_CONTENTSIGKEYID', 0x07E4); // [47][E4] -- This is the ID of the private key the data was signed with.
78 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:
79 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:
80 define('EBML_ID_MUXINGAPP', 0x0D80); // [4D][80] -- Muxing application or library ("libmatroska-0.4.3").
81 define('EBML_ID_SEEK', 0x0DBB); // [4D][BB] -- Contains a single seek entry to an EBML element.
82 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.
83 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:
84 define('EBML_ID_CONTENTENCODINGTYPE', 0x1033); // [50][33] -- A value describing what kind of transformation has been done. Possible values:
85 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.
86 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.
87 define('EBML_ID_CUEREFNUMBER', 0x135F); // [53][5F] -- Number of the referenced Block of Track X in the specified Cluster.
88 define('EBML_ID_NAME', 0x136E); // [53][6E] -- A human-readable track name.
89 define('EBML_ID_CUEBLOCKNUMBER', 0x1378); // [53][78] -- Number of the Block in the specified Cluster.
90 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.
91 define('EBML_ID_SEEKID', 0x13AB); // [53][AB] -- The binary ID corresponding to the element name.
92 define('EBML_ID_SEEKPOSITION', 0x13AC); // [53][AC] -- The position of the element in the segment in octets (0 = first level 1 element).
93 define('EBML_ID_STEREOMODE', 0x13B8); // [53][B8] -- Stereo-3D video mode.
94 define('EBML_ID_OLDSTEREOMODE', 0x13B9); // [53][B9] -- Bogus StereoMode value used in old versions of libmatroska. DO NOT USE. (0: mono, 1: right eye, 2: left eye, 3: both eyes).
95 define('EBML_ID_PIXELCROPBOTTOM', 0x14AA); // [54][AA] -- The number of video pixels to remove at the bottom of the image (for HDTV content).
96 define('EBML_ID_DISPLAYWIDTH', 0x14B0); // [54][B0] -- Width of the video frames to display.
97 define('EBML_ID_DISPLAYUNIT', 0x14B2); // [54][B2] -- Type of the unit for DisplayWidth/Height (0: pixels, 1: centimeters, 2: inches).
98 define('EBML_ID_ASPECTRATIOTYPE', 0x14B3); // [54][B3] -- Specify the possible modifications to the aspect ratio (0: free resizing, 1: keep aspect ratio, 2: fixed).
99 define('EBML_ID_DISPLAYHEIGHT', 0x14BA); // [54][BA] -- Height of the video frames to display.
100 define('EBML_ID_PIXELCROPTOP', 0x14BB); // [54][BB] -- The number of video pixels to remove at the top of the image.
101 define('EBML_ID_PIXELCROPLEFT', 0x14CC); // [54][CC] -- The number of video pixels to remove on the left of the image.
102 define('EBML_ID_PIXELCROPRIGHT', 0x14DD); // [54][DD] -- The number of video pixels to remove on the right of the image.
103 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.
104 define('EBML_ID_MAXBLOCKADDITIONID', 0x15EE); // [55][EE] -- The maximum value of BlockAddID. A value 0 means there is no BlockAdditions for this track.
105 define('EBML_ID_WRITINGAPP', 0x1741); // [57][41] -- Writing application ("mkvmerge-0.3.3").
106 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.
107 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.
108 define('EBML_ID_ATTACHEDFILE', 0x21A7); // [61][A7] -- An attached file.
109 define('EBML_ID_CONTENTENCODING', 0x2240); // [62][40] -- Settings for one content encoding like compression or encryption.
110 define('EBML_ID_BITDEPTH', 0x2264); // [62][64] -- Bits per sample, mostly used for PCM.
111 define('EBML_ID_CODECPRIVATE', 0x23A2); // [63][A2] -- Private data only known to the codec.
112 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.
113 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.
114 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.
115 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.
116 define('EBML_ID_TAGATTACHMENTUID', 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.
117 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.
118 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).
119 define('EBML_ID_TRACKTRANSLATE', 0x2624); // [66][24] -- The track identification for the given Chapter Codec.
120 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.
121 define('EBML_ID_TRACKTRANSLATECODEC', 0x26BF); // [66][BF] -- The chapter codec using this ID (0: Matroska Script, 1: DVD-menu).
122 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.
123 define('EBML_ID_SIMPLETAG', 0x27C8); // [67][C8] -- Contains general information about the target.
124 define('EBML_ID_TARGETTYPEVALUE', 0x28CA); // [68][CA] -- A number to indicate the logical level of the target (see TargetType).
125 define('EBML_ID_CHAPPROCESSCOMMAND', 0x2911); // [69][11] -- Contains all the commands associated to the Atom.
126 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).
127 define('EBML_ID_CHAPTERTRANSLATE', 0x2924); // [69][24] -- A tuple of corresponding ID used by chapter codecs to represent this segment.
128 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.
129 define('EBML_ID_CHAPPROCESS', 0x2944); // [69][44] -- Contains all the commands associated to the Atom.
130 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.
131 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.
132 define('EBML_ID_CHAPTERTRANSLATECODEC', 0x29BF); // [69][BF] -- The chapter codec using this ID (0: Matroska Script, 1: DVD-menu).
133 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.
134 define('EBML_ID_CONTENTENCODINGS', 0x2D80); // [6D][80] -- Settings for several content encoding mechanisms like compression or encryption.
135 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.
136 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.
137 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.
138 define('EBML_ID_CHAPTERSEGMENTEDITIONUID', 0x2EBC); // [6E][BC] -- The edition to play from the segment linked in ChapterSegmentUID.
139 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.
140 define('EBML_ID_TAG', 0x3373); // [73][73] -- Element containing elements specific to Tracks/Chapters.
141 define('EBML_ID_SEGMENTFILENAME', 0x3384); // [73][84] -- A filename corresponding to this segment.
142 define('EBML_ID_SEGMENTUID', 0x33A4); // [73][A4] -- A randomly generated unique ID to identify the current segment between many others (128 bits).
143 define('EBML_ID_CHAPTERUID', 0x33C4); // [73][C4] -- A unique ID to identify the Chapter.
144 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.
145 define('EBML_ID_ATTACHMENTLINK', 0x3446); // [74][46] -- The UID of an attachment that is used by this codec.
146 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.
147 define('EBML_ID_CHANNELPOSITIONS', 0x347B); // [7D][7B] -- Table of horizontal angles for each successive channel, see appendix.
148 define('EBML_ID_OUTPUTSAMPLINGFREQUENCY', 0x38B5); // [78][B5] -- Real output sampling frequency in Hz (used for SBR techniques).
149 define('EBML_ID_TITLE', 0x3BA9); // [7B][A9] -- General name of the segment.
150 define('EBML_ID_CHAPTERDISPLAY', 0x00); // [80] -- Contains all possible strings to use for the chapter display.
151 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).
152 define('EBML_ID_CHAPSTRING', 0x05); // [85] -- Contains the string to use as the chapter atom.
153 define('EBML_ID_CODECID', 0x06); // [86] -- An ID corresponding to the codec, see the codec page for more info.
154 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.
155 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.
156 define('EBML_ID_CLUSTERSLICES', 0x0E); // [8E] -- Contains slices description.
157 define('EBML_ID_CHAPTERTRACK', 0x0F); // [8F] -- List of tracks on which the chapter applies. If this element is not present, all tracks apply
158 define('EBML_ID_CHAPTERTIMESTART', 0x11); // [91] -- Timecode of the start of Chapter (not scaled).
159 define('EBML_ID_CHAPTERTIMEEND', 0x12); // [92] -- Timecode of the end of Chapter (timecode excluded, not scaled).
160 define('EBML_ID_CUEREFTIME', 0x16); // [96] -- Timecode of the referenced Block.
161 define('EBML_ID_CUEREFCLUSTER', 0x17); // [97] -- Position of the Cluster containing the referenced Block.
162 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).
163 define('EBML_ID_FLAGINTERLACED', 0x1A); // [9A] -- Set if the video is interlaced.
164 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.
165 define('EBML_ID_FLAGLACING', 0x1C); // [9C] -- Set if the track may contain blocks using lacing.
166 define('EBML_ID_CHANNELS', 0x1F); // [9F] -- Numbers of channels in the track.
167 define('EBML_ID_CLUSTERBLOCKGROUP', 0x20); // [A0] -- Basic container of information containing a single Block or BlockVirtual, and information specific to that Block/VirtualBlock.
168 define('EBML_ID_CLUSTERBLOCK', 0x21); // [A1] -- Block containing the actual data to be rendered and a timecode relative to the Cluster Timecode.
169 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.
170 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.
171 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.
172 define('EBML_ID_CLUSTERBLOCKADDITIONAL', 0x25); // [A5] -- Interpreted by the codec as it wishes (using the BlockAddID).
173 define('EBML_ID_CLUSTERBLOCKMORE', 0x26); // [A6] -- Contain the BlockAdditional and some parameters.
174 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.
175 define('EBML_ID_CODECDECODEALL', 0x2A); // [AA] -- The codec can decode potentially damaged data.
176 define('EBML_ID_CLUSTERPREVSIZE', 0x2B); // [AB] -- Size of the previous Cluster, in octets. Can be useful for backward playing.
177 define('EBML_ID_TRACKENTRY', 0x2E); // [AE] -- Describes a track with all elements.
178 define('EBML_ID_CLUSTERENCRYPTEDBLOCK', 0x2F); // [AF] -- Similar to SimpleBlock but the data inside the Block are Transformed (encrypt and/or signed).
179 define('EBML_ID_PIXELWIDTH', 0x30); // [B0] -- Width of the encoded video frames in pixels.
180 define('EBML_ID_CUETIME', 0x33); // [B3] -- Absolute timecode according to the segment time base.
181 define('EBML_ID_SAMPLINGFREQUENCY', 0x35); // [B5] -- Sampling frequency in Hz.
182 define('EBML_ID_CHAPTERATOM', 0x36); // [B6] -- Contains the atom information to use as the chapter atom (apply to all tracks).
183 define('EBML_ID_CUETRACKPOSITIONS', 0x37); // [B7] -- Contain positions for different tracks corresponding to the timecode.
184 define('EBML_ID_FLAGENABLED', 0x39); // [B9] -- Set if the track is used.
185 define('EBML_ID_PIXELHEIGHT', 0x3A); // [BA] -- Height of the encoded video frames in pixels.
186 define('EBML_ID_CUEPOINT', 0x3B); // [BB] -- Contains all information relative to a seek point in the segment.
187 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.
188 define('EBML_ID_CLUSTERBLOCKADDITIONID', 0x4B); // [CB] -- The ID of the BlockAdditional element (0 is the main Block).
189 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.
190 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).
191 define('EBML_ID_CLUSTERDELAY', 0x4E); // [CE] -- The (scaled) delay to apply to the element.
192 define('EBML_ID_CLUSTERDURATION', 0x4F); // [CF] -- The (scaled) duration to apply to the element.
193 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).
194 define('EBML_ID_CUEREFERENCE', 0x5B); // [DB] -- The Clusters containing the required referenced Blocks.
195 define('EBML_ID_VIDEO', 0x60); // [E0] -- Video settings.
196 define('EBML_ID_AUDIO', 0x61); // [E1] -- Audio settings.
197 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.
198 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.
199 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.
200 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.
201 define('EBML_ID_CLUSTERTIMECODE', 0x67); // [E7] -- Absolute timecode of the cluster (based on TimecodeScale).
202 define('EBML_ID_CLUSTERBLOCKADDID', 0x6E); // [EE] -- An ID to identify the BlockAdditional level.
203 define('EBML_ID_CUECLUSTERPOSITION', 0x71); // [F1] -- The position of the Cluster containing the required Block.
204 define('EBML_ID_CUETRACK', 0x77); // [F7] -- The track for which a position is given.
205 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.
206 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.
207 define('EBML_ID_CLUSTERREFERENCEVIRTUAL', 0x7D); // [FD] -- Relative position of the data that should be in position of the virtual block.
211 * @tutorial http://www.matroska.org/technical/specs/index.html
213 * @todo Rewrite EBML parser to reduce it's size and honor default element values
214 * @todo After rewrite implement stream size calculation, that will provide additional useful info and enable AAC/FLAC audio bitrate detection
216 class getid3_matroska extends getid3_handler
219 public static $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 [default: TRUE]
220 public static $parse_whole_file = false; // true to parse the whole file, not only header [default: FALSE]
222 // private parser settings/placeholders
223 private $EBMLbuffer = '';
224 private $EBMLbuffer_offset = 0;
225 private $EBMLbuffer_length = 0;
226 private $current_offset = 0;
227 private $unuseful_elements = array(EBML_ID_CRC32, EBML_ID_VOID);
229 public function Analyze()
231 $info = &$this->getid3->info;
235 $this->parseEBML($info);
236 } catch (Exception $e) {
237 $info['error'][] = 'EBML parser: '.$e->getMessage();
240 // calculate playtime
241 if (isset($info['matroska']['info']) && is_array($info['matroska']['info'])) {
242 foreach ($info['matroska']['info'] as $key => $infoarray) {
243 if (isset($infoarray['Duration'])) {
244 // TimecodeScale is how many nanoseconds each Duration unit is
245 $info['playtime_seconds'] = $infoarray['Duration'] * ((isset($infoarray['TimecodeScale']) ? $infoarray['TimecodeScale'] : 1000000) / 1000000000);
252 if (isset($info['matroska']['tags']) && is_array($info['matroska']['tags'])) {
253 foreach ($info['matroska']['tags'] as $key => $infoarray) {
254 $this->ExtractCommentsSimpleTag($infoarray);
259 if (isset($info['matroska']['tracks']['tracks']) && is_array($info['matroska']['tracks']['tracks'])) {
260 foreach ($info['matroska']['tracks']['tracks'] as $key => $trackarray) {
262 $track_info = array();
263 $track_info['dataformat'] = self::CodecIDtoCommonName($trackarray['CodecID']);
264 $track_info['default'] = (isset($trackarray['FlagDefault']) ? $trackarray['FlagDefault'] : true);
265 if (isset($trackarray['Name'])) { $track_info['name'] = $trackarray['Name']; }
267 switch ($trackarray['TrackType']) {
270 $track_info['resolution_x'] = $trackarray['PixelWidth'];
271 $track_info['resolution_y'] = $trackarray['PixelHeight'];
272 $track_info['display_unit'] = self::displayUnit(isset($trackarray['DisplayUnit']) ? $trackarray['DisplayUnit'] : 0);
273 $track_info['display_x'] = (isset($trackarray['DisplayWidth']) ? $trackarray['DisplayWidth'] : $trackarray['PixelWidth']);
274 $track_info['display_y'] = (isset($trackarray['DisplayHeight']) ? $trackarray['DisplayHeight'] : $trackarray['PixelHeight']);
276 if (isset($trackarray['PixelCropBottom'])) { $track_info['crop_bottom'] = $trackarray['PixelCropBottom']; }
277 if (isset($trackarray['PixelCropTop'])) { $track_info['crop_top'] = $trackarray['PixelCropTop']; }
278 if (isset($trackarray['PixelCropLeft'])) { $track_info['crop_left'] = $trackarray['PixelCropLeft']; }
279 if (isset($trackarray['PixelCropRight'])) { $track_info['crop_right'] = $trackarray['PixelCropRight']; }
280 if (isset($trackarray['DefaultDuration'])) { $track_info['frame_rate'] = round(1000000000 / $trackarray['DefaultDuration'], 3); }
281 if (isset($trackarray['CodecName'])) { $track_info['codec'] = $trackarray['CodecName']; }
283 switch ($trackarray['CodecID']) {
284 case 'V_MS/VFW/FOURCC':
285 getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);
287 $parsed = getid3_riff::ParseBITMAPINFOHEADER($trackarray['CodecPrivate']);
288 $track_info['codec'] = getid3_riff::fourccLookup($parsed['fourcc']);
289 $info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $parsed;
292 /*case 'V_MPEG4/ISO/AVC':
293 $h264['profile'] = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 1, 1));
294 $h264['level'] = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 3, 1));
295 $rn = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 4, 1));
296 $h264['NALUlength'] = ($rn & 3) + 1;
297 $rn = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 5, 1));
300 for ($i = 0; $i < $nsps; $i ++) {
301 $length = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], $offset, 2));
302 $h264['SPS'][] = substr($trackarray['CodecPrivate'], $offset + 2, $length);
303 $offset += 2 + $length;
305 $npps = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], $offset, 1));
307 for ($i = 0; $i < $npps; $i ++) {
308 $length = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], $offset, 2));
309 $h264['PPS'][] = substr($trackarray['CodecPrivate'], $offset + 2, $length);
310 $offset += 2 + $length;
312 $info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $h264;
316 $info['video']['streams'][] = $track_info;
320 $track_info['sample_rate'] = (isset($trackarray['SamplingFrequency']) ? $trackarray['SamplingFrequency'] : 8000.0);
321 $track_info['channels'] = (isset($trackarray['Channels']) ? $trackarray['Channels'] : 1);
322 $track_info['language'] = (isset($trackarray['Language']) ? $trackarray['Language'] : 'eng');
323 if (isset($trackarray['BitDepth'])) { $track_info['bits_per_sample'] = $trackarray['BitDepth']; }
324 if (isset($trackarray['CodecName'])) { $track_info['codec'] = $trackarray['CodecName']; }
326 switch ($trackarray['CodecID']) {
327 case 'A_PCM/INT/LIT':
328 case 'A_PCM/INT/BIG':
329 $track_info['bitrate'] = $trackarray['SamplingFrequency'] * $trackarray['Channels'] * $trackarray['BitDepth'];
337 getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.'.($track_info['dataformat'] == 'mp2' ? 'mp3' : $track_info['dataformat']).'.php', __FILE__, true);
339 if (!isset($info['matroska']['track_data_offsets'][$trackarray['TrackNumber']])) {
340 $this->warning('Unable to parse audio data ['.basename(__FILE__).':'.__LINE__.'] because $info[matroska][track_data_offsets]['.$trackarray['TrackNumber'].'] not set');
344 // create temp instance
345 $getid3_temp = new getID3();
346 if ($track_info['dataformat'] != 'flac') {
347 $getid3_temp->openfile($this->getid3->filename);
349 $getid3_temp->info['avdataoffset'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
350 if ($track_info['dataformat'][0] == 'm' || $track_info['dataformat'] == 'flac') {
351 $getid3_temp->info['avdataend'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'] + $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['length'];
355 $class = 'getid3_'.($track_info['dataformat'] == 'mp2' ? 'mp3' : $track_info['dataformat']);
356 $header_data_key = $track_info['dataformat'][0] == 'm' ? 'mpeg' : $track_info['dataformat'];
357 $getid3_audio = new $class($getid3_temp, __CLASS__);
358 if ($track_info['dataformat'] == 'flac') {
359 $getid3_audio->AnalyzeString($trackarray['CodecPrivate']);
362 $getid3_audio->Analyze();
364 if (!empty($getid3_temp->info[$header_data_key])) {
365 $info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info[$header_data_key];
366 if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
367 foreach ($getid3_temp->info['audio'] as $key => $value) {
368 $track_info[$key] = $value;
373 $this->warning('Unable to parse audio data ['.basename(__FILE__).':'.__LINE__.'] because '.$class.'::Analyze() failed at offset '.$getid3_temp->info['avdataoffset']);
376 // copy errors and warnings
377 if (!empty($getid3_temp->info['error'])) {
378 foreach ($getid3_temp->info['error'] as $newerror) {
379 $this->warning($class.'() says: ['.$newerror.']');
382 if (!empty($getid3_temp->info['warning'])) {
383 foreach ($getid3_temp->info['warning'] as $newerror) {
384 $this->warning($class.'() says: ['.$newerror.']');
387 unset($getid3_temp, $getid3_audio);
391 case 'A_AAC/MPEG2/LC':
392 case 'A_AAC/MPEG2/LC/SBR':
393 case 'A_AAC/MPEG4/LC':
394 case 'A_AAC/MPEG4/LC/SBR':
395 $this->warning($trackarray['CodecID'].' audio data contains no header, audio/video bitrates can\'t be calculated');
399 if (!isset($trackarray['CodecPrivate'])) {
400 $this->warning('Unable to parse audio data ['.basename(__FILE__).':'.__LINE__.'] because CodecPrivate data not set');
403 $vorbis_offset = strpos($trackarray['CodecPrivate'], 'vorbis', 1);
404 if ($vorbis_offset === false) {
405 $this->warning('Unable to parse audio data ['.basename(__FILE__).':'.__LINE__.'] because CodecPrivate data does not contain "vorbis" keyword');
410 getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.ogg.php', __FILE__, true);
412 // create temp instance
413 $getid3_temp = new getID3();
416 $getid3_ogg = new getid3_ogg($getid3_temp);
417 $oggpageinfo['page_seqno'] = 0;
418 $getid3_ogg->ParseVorbisPageHeader($trackarray['CodecPrivate'], $vorbis_offset, $oggpageinfo);
419 if (!empty($getid3_temp->info['ogg'])) {
420 $info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info['ogg'];
421 if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
422 foreach ($getid3_temp->info['audio'] as $key => $value) {
423 $track_info[$key] = $value;
428 // copy errors and warnings
429 if (!empty($getid3_temp->info['error'])) {
430 foreach ($getid3_temp->info['error'] as $newerror) {
431 $this->warning('getid3_ogg() says: ['.$newerror.']');
434 if (!empty($getid3_temp->info['warning'])) {
435 foreach ($getid3_temp->info['warning'] as $newerror) {
436 $this->warning('getid3_ogg() says: ['.$newerror.']');
440 if (!empty($getid3_temp->info['ogg']['bitrate_nominal'])) {
441 $track_info['bitrate'] = $getid3_temp->info['ogg']['bitrate_nominal'];
443 unset($getid3_temp, $getid3_ogg, $oggpageinfo, $vorbis_offset);
447 getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);
449 $parsed = getid3_riff::parseWAVEFORMATex($trackarray['CodecPrivate']);
450 foreach ($parsed as $key => $value) {
452 $track_info[$key] = $value;
455 $info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $parsed;
459 $this->warning('Unhandled audio type "'.(isset($trackarray['CodecID']) ? $trackarray['CodecID'] : '').'"');
462 $info['audio']['streams'][] = $track_info;
467 if (!empty($info['video']['streams'])) {
468 $info['video'] = self::getDefaultStreamInfo($info['video']['streams']);
470 if (!empty($info['audio']['streams'])) {
471 $info['audio'] = self::getDefaultStreamInfo($info['audio']['streams']);
475 // process attachments
476 if (isset($info['matroska']['attachments']) && $this->getid3->option_save_attachments !== getID3::ATTACHMENTS_NONE) {
477 foreach ($info['matroska']['attachments'] as $i => $entry) {
478 if (strpos($entry['FileMimeType'], 'image/') === 0 && !empty($entry['FileData'])) {
479 $info['matroska']['comments']['picture'][] = array('data' => $entry['FileData'], 'image_mime' => $entry['FileMimeType'], 'filename' => $entry['FileName']);
484 // determine mime type
485 if (!empty($info['video']['streams'])) {
486 $info['mime_type'] = ($info['matroska']['doctype'] == 'webm' ? 'video/webm' : 'video/x-matroska');
487 } elseif (!empty($info['audio']['streams'])) {
488 $info['mime_type'] = ($info['matroska']['doctype'] == 'webm' ? 'audio/webm' : 'audio/x-matroska');
489 } elseif (isset($info['mime_type'])) {
490 unset($info['mime_type']);
496 private function parseEBML(&$info) {
497 // http://www.matroska.org/technical/specs/index.html#EBMLBasics
498 $this->current_offset = $info['avdataoffset'];
500 while ($this->getEBMLelement($top_element, $info['avdataend'])) {
501 switch ($top_element['id']) {
504 $info['matroska']['header']['offset'] = $top_element['offset'];
505 $info['matroska']['header']['length'] = $top_element['length'];
507 while ($this->getEBMLelement($element_data, $top_element['end'], true)) {
508 switch ($element_data['id']) {
510 case EBML_ID_EBMLVERSION:
511 case EBML_ID_EBMLREADVERSION:
512 case EBML_ID_EBMLMAXIDLENGTH:
513 case EBML_ID_EBMLMAXSIZELENGTH:
514 case EBML_ID_DOCTYPEVERSION:
515 case EBML_ID_DOCTYPEREADVERSION:
516 $element_data['data'] = getid3_lib::BigEndian2Int($element_data['data']);
519 case EBML_ID_DOCTYPE:
520 $element_data['data'] = getid3_lib::trimNullByte($element_data['data']);
521 $info['matroska']['doctype'] = $element_data['data'];
522 $info['fileformat'] = $element_data['data'];
526 $this->unhandledElement('header', __LINE__, $element_data);
529 unset($element_data['offset'], $element_data['end']);
530 $info['matroska']['header']['elements'][] = $element_data;
534 case EBML_ID_SEGMENT:
535 $info['matroska']['segment'][0]['offset'] = $top_element['offset'];
536 $info['matroska']['segment'][0]['length'] = $top_element['length'];
538 while ($this->getEBMLelement($element_data, $top_element['end'])) {
539 if ($element_data['id'] != EBML_ID_CLUSTER || !self::$hide_clusters) { // collect clusters only if required
540 $info['matroska']['segments'][] = $element_data;
542 switch ($element_data['id']) {
544 case EBML_ID_SEEKHEAD: // Contains the position of other level 1 elements.
546 while ($this->getEBMLelement($seek_entry, $element_data['end'])) {
547 switch ($seek_entry['id']) {
549 case EBML_ID_SEEK: // Contains a single seek entry to an EBML element
550 while ($this->getEBMLelement($sub_seek_entry, $seek_entry['end'], true)) {
552 switch ($sub_seek_entry['id']) {
555 $seek_entry['target_id'] = self::EBML2Int($sub_seek_entry['data']);
556 $seek_entry['target_name'] = self::EBMLidName($seek_entry['target_id']);
559 case EBML_ID_SEEKPOSITION:
560 $seek_entry['target_offset'] = $element_data['offset'] + getid3_lib::BigEndian2Int($sub_seek_entry['data']);
564 $this->unhandledElement('seekhead.seek', __LINE__, $sub_seek_entry); }
567 if ($seek_entry['target_id'] != EBML_ID_CLUSTER || !self::$hide_clusters) { // collect clusters only if required
568 $info['matroska']['seek'][] = $seek_entry;
573 $this->unhandledElement('seekhead', __LINE__, $seek_entry);
578 case EBML_ID_TRACKS: // A top-level block of information with many tracks described.
579 $info['matroska']['tracks'] = $element_data;
581 while ($this->getEBMLelement($track_entry, $element_data['end'])) {
582 switch ($track_entry['id']) {
584 case EBML_ID_TRACKENTRY: //subelements: Describes a track with all elements.
586 while ($this->getEBMLelement($subelement, $track_entry['end'], array(EBML_ID_VIDEO, EBML_ID_AUDIO, EBML_ID_CONTENTENCODINGS, EBML_ID_CODECPRIVATE))) {
587 switch ($subelement['id']) {
589 case EBML_ID_TRACKNUMBER:
590 case EBML_ID_TRACKUID:
591 case EBML_ID_TRACKTYPE:
592 case EBML_ID_MINCACHE:
593 case EBML_ID_MAXCACHE:
594 case EBML_ID_MAXBLOCKADDITIONID:
595 case EBML_ID_DEFAULTDURATION: // nanoseconds per frame
596 $track_entry[$subelement['id_name']] = getid3_lib::BigEndian2Int($subelement['data']);
599 case EBML_ID_TRACKTIMECODESCALE:
600 $track_entry[$subelement['id_name']] = getid3_lib::BigEndian2Float($subelement['data']);
603 case EBML_ID_CODECID:
604 case EBML_ID_LANGUAGE:
606 case EBML_ID_CODECNAME:
607 $track_entry[$subelement['id_name']] = getid3_lib::trimNullByte($subelement['data']);
610 case EBML_ID_CODECPRIVATE:
611 $track_entry[$subelement['id_name']] = $this->readEBMLelementData($subelement['length'], true);
614 case EBML_ID_FLAGENABLED:
615 case EBML_ID_FLAGDEFAULT:
616 case EBML_ID_FLAGFORCED:
617 case EBML_ID_FLAGLACING:
618 case EBML_ID_CODECDECODEALL:
619 $track_entry[$subelement['id_name']] = (bool) getid3_lib::BigEndian2Int($subelement['data']);
624 while ($this->getEBMLelement($sub_subelement, $subelement['end'], true)) {
625 switch ($sub_subelement['id']) {
627 case EBML_ID_PIXELWIDTH:
628 case EBML_ID_PIXELHEIGHT:
629 case EBML_ID_PIXELCROPBOTTOM:
630 case EBML_ID_PIXELCROPTOP:
631 case EBML_ID_PIXELCROPLEFT:
632 case EBML_ID_PIXELCROPRIGHT:
633 case EBML_ID_DISPLAYWIDTH:
634 case EBML_ID_DISPLAYHEIGHT:
635 case EBML_ID_DISPLAYUNIT:
636 case EBML_ID_ASPECTRATIOTYPE:
637 case EBML_ID_STEREOMODE:
638 case EBML_ID_OLDSTEREOMODE:
639 $track_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
642 case EBML_ID_FLAGINTERLACED:
643 $track_entry[$sub_subelement['id_name']] = (bool)getid3_lib::BigEndian2Int($sub_subelement['data']);
646 case EBML_ID_GAMMAVALUE:
647 $track_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Float($sub_subelement['data']);
650 case EBML_ID_COLOURSPACE:
651 $track_entry[$sub_subelement['id_name']] = getid3_lib::trimNullByte($sub_subelement['data']);
655 $this->unhandledElement('track.video', __LINE__, $sub_subelement);
662 while ($this->getEBMLelement($sub_subelement, $subelement['end'], true)) {
663 switch ($sub_subelement['id']) {
665 case EBML_ID_CHANNELS:
666 case EBML_ID_BITDEPTH:
667 $track_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
670 case EBML_ID_SAMPLINGFREQUENCY:
671 case EBML_ID_OUTPUTSAMPLINGFREQUENCY:
672 $track_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Float($sub_subelement['data']);
675 case EBML_ID_CHANNELPOSITIONS:
676 $track_entry[$sub_subelement['id_name']] = getid3_lib::trimNullByte($sub_subelement['data']);
680 $this->unhandledElement('track.audio', __LINE__, $sub_subelement);
685 case EBML_ID_CONTENTENCODINGS:
687 while ($this->getEBMLelement($sub_subelement, $subelement['end'])) {
688 switch ($sub_subelement['id']) {
690 case EBML_ID_CONTENTENCODING:
692 while ($this->getEBMLelement($sub_sub_subelement, $sub_subelement['end'], array(EBML_ID_CONTENTCOMPRESSION, EBML_ID_CONTENTENCRYPTION))) {
693 switch ($sub_sub_subelement['id']) {
695 case EBML_ID_CONTENTENCODINGORDER:
696 case EBML_ID_CONTENTENCODINGSCOPE:
697 case EBML_ID_CONTENTENCODINGTYPE:
698 $track_entry[$sub_subelement['id_name']][$sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
701 case EBML_ID_CONTENTCOMPRESSION:
703 while ($this->getEBMLelement($sub_sub_sub_subelement, $sub_sub_subelement['end'], true)) {
704 switch ($sub_sub_sub_subelement['id']) {
706 case EBML_ID_CONTENTCOMPALGO:
707 $track_entry[$sub_subelement['id_name']][$sub_sub_subelement['id_name']][$sub_sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_sub_subelement['data']);
710 case EBML_ID_CONTENTCOMPSETTINGS:
711 $track_entry[$sub_subelement['id_name']][$sub_sub_subelement['id_name']][$sub_sub_sub_subelement['id_name']] = $sub_sub_sub_subelement['data'];
715 $this->unhandledElement('track.contentencodings.contentencoding.contentcompression', __LINE__, $sub_sub_sub_subelement);
720 case EBML_ID_CONTENTENCRYPTION:
722 while ($this->getEBMLelement($sub_sub_sub_subelement, $sub_sub_subelement['end'], true)) {
723 switch ($sub_sub_sub_subelement['id']) {
725 case EBML_ID_CONTENTENCALGO:
726 case EBML_ID_CONTENTSIGALGO:
727 case EBML_ID_CONTENTSIGHASHALGO:
728 $track_entry[$sub_subelement['id_name']][$sub_sub_subelement['id_name']][$sub_sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_sub_subelement['data']);
731 case EBML_ID_CONTENTENCKEYID:
732 case EBML_ID_CONTENTSIGNATURE:
733 case EBML_ID_CONTENTSIGKEYID:
734 $track_entry[$sub_subelement['id_name']][$sub_sub_subelement['id_name']][$sub_sub_sub_subelement['id_name']] = $sub_sub_sub_subelement['data'];
738 $this->unhandledElement('track.contentencodings.contentencoding.contentcompression', __LINE__, $sub_sub_sub_subelement);
744 $this->unhandledElement('track.contentencodings.contentencoding', __LINE__, $sub_sub_subelement);
750 $this->unhandledElement('track.contentencodings', __LINE__, $sub_subelement);
756 $this->unhandledElement('track', __LINE__, $subelement);
760 $info['matroska']['tracks']['tracks'][] = $track_entry;
764 $this->unhandledElement('tracks', __LINE__, $track_entry);
769 case EBML_ID_INFO: // Contains miscellaneous general information and statistics on the file.
770 $info_entry = array();
772 while ($this->getEBMLelement($subelement, $element_data['end'], true)) {
773 switch ($subelement['id']) {
775 case EBML_ID_TIMECODESCALE:
776 $info_entry[$subelement['id_name']] = getid3_lib::BigEndian2Int($subelement['data']);
779 case EBML_ID_DURATION:
780 $info_entry[$subelement['id_name']] = getid3_lib::BigEndian2Float($subelement['data']);
783 case EBML_ID_DATEUTC:
784 $info_entry[$subelement['id_name']] = getid3_lib::BigEndian2Int($subelement['data']);
785 $info_entry[$subelement['id_name'].'_unix'] = self::EBMLdate2unix($info_entry[$subelement['id_name']]);
788 case EBML_ID_SEGMENTUID:
789 case EBML_ID_PREVUID:
790 case EBML_ID_NEXTUID:
791 $info_entry[$subelement['id_name']] = getid3_lib::trimNullByte($subelement['data']);
794 case EBML_ID_SEGMENTFAMILY:
795 $info_entry[$subelement['id_name']][] = getid3_lib::trimNullByte($subelement['data']);
798 case EBML_ID_SEGMENTFILENAME:
799 case EBML_ID_PREVFILENAME:
800 case EBML_ID_NEXTFILENAME:
802 case EBML_ID_MUXINGAPP:
803 case EBML_ID_WRITINGAPP:
804 $info_entry[$subelement['id_name']] = getid3_lib::trimNullByte($subelement['data']);
805 $info['matroska']['comments'][strtolower($subelement['id_name'])][] = $info_entry[$subelement['id_name']];
808 case EBML_ID_CHAPTERTRANSLATE:
809 $chaptertranslate_entry = array();
811 while ($this->getEBMLelement($sub_subelement, $subelement['end'], true)) {
812 switch ($sub_subelement['id']) {
814 case EBML_ID_CHAPTERTRANSLATEEDITIONUID:
815 $chaptertranslate_entry[$sub_subelement['id_name']][] = getid3_lib::BigEndian2Int($sub_subelement['data']);
818 case EBML_ID_CHAPTERTRANSLATECODEC:
819 $chaptertranslate_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
822 case EBML_ID_CHAPTERTRANSLATEID:
823 $chaptertranslate_entry[$sub_subelement['id_name']] = getid3_lib::trimNullByte($sub_subelement['data']);
827 $this->unhandledElement('info.chaptertranslate', __LINE__, $sub_subelement);
830 $info_entry[$subelement['id_name']] = $chaptertranslate_entry;
834 $this->unhandledElement('info', __LINE__, $subelement);
837 $info['matroska']['info'][] = $info_entry;
840 case EBML_ID_CUES: // A top-level element to speed seeking access. All entries are local to the segment. Should be mandatory for non "live" streams.
841 if (self::$hide_clusters) { // do not parse cues if hide clusters is "ON" till they point to clusters anyway
842 $this->current_offset = $element_data['end'];
845 $cues_entry = array();
847 while ($this->getEBMLelement($subelement, $element_data['end'])) {
848 switch ($subelement['id']) {
850 case EBML_ID_CUEPOINT:
851 $cuepoint_entry = array();
853 while ($this->getEBMLelement($sub_subelement, $subelement['end'], array(EBML_ID_CUETRACKPOSITIONS))) {
854 switch ($sub_subelement['id']) {
856 case EBML_ID_CUETRACKPOSITIONS:
857 $cuetrackpositions_entry = array();
859 while ($this->getEBMLelement($sub_sub_subelement, $sub_subelement['end'], true)) {
860 switch ($sub_sub_subelement['id']) {
862 case EBML_ID_CUETRACK:
863 case EBML_ID_CUECLUSTERPOSITION:
864 case EBML_ID_CUEBLOCKNUMBER:
865 case EBML_ID_CUECODECSTATE:
866 $cuetrackpositions_entry[$sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
870 $this->unhandledElement('cues.cuepoint.cuetrackpositions', __LINE__, $sub_sub_subelement);
873 $cuepoint_entry[$sub_subelement['id_name']][] = $cuetrackpositions_entry;
876 case EBML_ID_CUETIME:
877 $cuepoint_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
881 $this->unhandledElement('cues.cuepoint', __LINE__, $sub_subelement);
884 $cues_entry[] = $cuepoint_entry;
888 $this->unhandledElement('cues', __LINE__, $subelement);
891 $info['matroska']['cues'] = $cues_entry;
894 case EBML_ID_TAGS: // Element containing elements specific to Tracks/Chapters.
895 $tags_entry = array();
897 while ($this->getEBMLelement($subelement, $element_data['end'], false)) {
898 switch ($subelement['id']) {
901 $tag_entry = array();
903 while ($this->getEBMLelement($sub_subelement, $subelement['end'], false)) {
904 switch ($sub_subelement['id']) {
906 case EBML_ID_TARGETS:
907 $targets_entry = array();
909 while ($this->getEBMLelement($sub_sub_subelement, $sub_subelement['end'], true)) {
910 switch ($sub_sub_subelement['id']) {
912 case EBML_ID_TARGETTYPEVALUE:
913 $targets_entry[$sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
914 $targets_entry[strtolower($sub_sub_subelement['id_name']).'_long'] = self::TargetTypeValue($targets_entry[$sub_sub_subelement['id_name']]);
917 case EBML_ID_TARGETTYPE:
918 $targets_entry[$sub_sub_subelement['id_name']] = $sub_sub_subelement['data'];
921 case EBML_ID_TAGTRACKUID:
922 case EBML_ID_TAGEDITIONUID:
923 case EBML_ID_TAGCHAPTERUID:
924 case EBML_ID_TAGATTACHMENTUID:
925 $targets_entry[$sub_sub_subelement['id_name']][] = getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
929 $this->unhandledElement('tags.tag.targets', __LINE__, $sub_sub_subelement);
932 $tag_entry[$sub_subelement['id_name']] = $targets_entry;
935 case EBML_ID_SIMPLETAG:
936 $tag_entry[$sub_subelement['id_name']][] = $this->HandleEMBLSimpleTag($sub_subelement['end']);
940 $this->unhandledElement('tags.tag', __LINE__, $sub_subelement);
943 $tags_entry[] = $tag_entry;
947 $this->unhandledElement('tags', __LINE__, $subelement);
950 $info['matroska']['tags'] = $tags_entry;
953 case EBML_ID_ATTACHMENTS: // Contain attached files.
955 while ($this->getEBMLelement($subelement, $element_data['end'])) {
956 switch ($subelement['id']) {
958 case EBML_ID_ATTACHEDFILE:
959 $attachedfile_entry = array();
961 while ($this->getEBMLelement($sub_subelement, $subelement['end'], array(EBML_ID_FILEDATA))) {
962 switch ($sub_subelement['id']) {
964 case EBML_ID_FILEDESCRIPTION:
965 case EBML_ID_FILENAME:
966 case EBML_ID_FILEMIMETYPE:
967 $attachedfile_entry[$sub_subelement['id_name']] = $sub_subelement['data'];
970 case EBML_ID_FILEDATA:
971 $attachedfile_entry['data_offset'] = $this->current_offset;
972 $attachedfile_entry['data_length'] = $sub_subelement['length'];
974 $attachedfile_entry[$sub_subelement['id_name']] = $this->saveAttachment(
975 $attachedfile_entry['FileName'],
976 $attachedfile_entry['data_offset'],
977 $attachedfile_entry['data_length']);
979 $this->current_offset = $sub_subelement['end'];
982 case EBML_ID_FILEUID:
983 $attachedfile_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
987 $this->unhandledElement('attachments.attachedfile', __LINE__, $sub_subelement);
990 $info['matroska']['attachments'][] = $attachedfile_entry;
994 $this->unhandledElement('attachments', __LINE__, $subelement);
999 case EBML_ID_CHAPTERS:
1001 while ($this->getEBMLelement($subelement, $element_data['end'])) {
1002 switch ($subelement['id']) {
1004 case EBML_ID_EDITIONENTRY:
1005 $editionentry_entry = array();
1007 while ($this->getEBMLelement($sub_subelement, $subelement['end'], array(EBML_ID_CHAPTERATOM))) {
1008 switch ($sub_subelement['id']) {
1010 case EBML_ID_EDITIONUID:
1011 $editionentry_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
1014 case EBML_ID_EDITIONFLAGHIDDEN:
1015 case EBML_ID_EDITIONFLAGDEFAULT:
1016 case EBML_ID_EDITIONFLAGORDERED:
1017 $editionentry_entry[$sub_subelement['id_name']] = (bool)getid3_lib::BigEndian2Int($sub_subelement['data']);
1020 case EBML_ID_CHAPTERATOM:
1021 $chapteratom_entry = array();
1023 while ($this->getEBMLelement($sub_sub_subelement, $sub_subelement['end'], array(EBML_ID_CHAPTERTRACK, EBML_ID_CHAPTERDISPLAY))) {
1024 switch ($sub_sub_subelement['id']) {
1026 case EBML_ID_CHAPTERSEGMENTUID:
1027 case EBML_ID_CHAPTERSEGMENTEDITIONUID:
1028 $chapteratom_entry[$sub_sub_subelement['id_name']] = $sub_sub_subelement['data'];
1031 case EBML_ID_CHAPTERFLAGENABLED:
1032 case EBML_ID_CHAPTERFLAGHIDDEN:
1033 $chapteratom_entry[$sub_sub_subelement['id_name']] = (bool)getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
1036 case EBML_ID_CHAPTERUID:
1037 case EBML_ID_CHAPTERTIMESTART:
1038 case EBML_ID_CHAPTERTIMEEND:
1039 $chapteratom_entry[$sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
1042 case EBML_ID_CHAPTERTRACK:
1043 $chaptertrack_entry = array();
1045 while ($this->getEBMLelement($sub_sub_sub_subelement, $sub_sub_subelement['end'], true)) {
1046 switch ($sub_sub_sub_subelement['id']) {
1048 case EBML_ID_CHAPTERTRACKNUMBER:
1049 $chaptertrack_entry[$sub_sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_sub_subelement['data']);
1053 $this->unhandledElement('chapters.editionentry.chapteratom.chaptertrack', __LINE__, $sub_sub_sub_subelement);
1056 $chapteratom_entry[$sub_sub_subelement['id_name']][] = $chaptertrack_entry;
1059 case EBML_ID_CHAPTERDISPLAY:
1060 $chapterdisplay_entry = array();
1062 while ($this->getEBMLelement($sub_sub_sub_subelement, $sub_sub_subelement['end'], true)) {
1063 switch ($sub_sub_sub_subelement['id']) {
1065 case EBML_ID_CHAPSTRING:
1066 case EBML_ID_CHAPLANGUAGE:
1067 case EBML_ID_CHAPCOUNTRY:
1068 $chapterdisplay_entry[$sub_sub_sub_subelement['id_name']] = $sub_sub_sub_subelement['data'];
1072 $this->unhandledElement('chapters.editionentry.chapteratom.chapterdisplay', __LINE__, $sub_sub_sub_subelement);
1075 $chapteratom_entry[$sub_sub_subelement['id_name']][] = $chapterdisplay_entry;
1079 $this->unhandledElement('chapters.editionentry.chapteratom', __LINE__, $sub_sub_subelement);
1082 $editionentry_entry[$sub_subelement['id_name']][] = $chapteratom_entry;
1086 $this->unhandledElement('chapters.editionentry', __LINE__, $sub_subelement);
1089 $info['matroska']['chapters'][] = $editionentry_entry;
1093 $this->unhandledElement('chapters', __LINE__, $subelement);
1098 case EBML_ID_CLUSTER: // The lower level element containing the (monolithic) Block structure.
1099 $cluster_entry = array();
1101 while ($this->getEBMLelement($subelement, $element_data['end'], array(EBML_ID_CLUSTERSILENTTRACKS, EBML_ID_CLUSTERBLOCKGROUP, EBML_ID_CLUSTERSIMPLEBLOCK))) {
1102 switch ($subelement['id']) {
1104 case EBML_ID_CLUSTERTIMECODE:
1105 case EBML_ID_CLUSTERPOSITION:
1106 case EBML_ID_CLUSTERPREVSIZE:
1107 $cluster_entry[$subelement['id_name']] = getid3_lib::BigEndian2Int($subelement['data']);
1110 case EBML_ID_CLUSTERSILENTTRACKS:
1111 $cluster_silent_tracks = array();
1113 while ($this->getEBMLelement($sub_subelement, $subelement['end'], true)) {
1114 switch ($sub_subelement['id']) {
1116 case EBML_ID_CLUSTERSILENTTRACKNUMBER:
1117 $cluster_silent_tracks[] = getid3_lib::BigEndian2Int($sub_subelement['data']);
1121 $this->unhandledElement('cluster.silenttracks', __LINE__, $sub_subelement);
1124 $cluster_entry[$subelement['id_name']][] = $cluster_silent_tracks;
1127 case EBML_ID_CLUSTERBLOCKGROUP:
1128 $cluster_block_group = array('offset' => $this->current_offset);
1130 while ($this->getEBMLelement($sub_subelement, $subelement['end'], array(EBML_ID_CLUSTERBLOCK))) {
1131 switch ($sub_subelement['id']) {
1133 case EBML_ID_CLUSTERBLOCK:
1134 $cluster_block_group[$sub_subelement['id_name']] = $this->HandleEMBLClusterBlock($sub_subelement, EBML_ID_CLUSTERBLOCK, $info);
1137 case EBML_ID_CLUSTERREFERENCEPRIORITY: // unsigned-int
1138 case EBML_ID_CLUSTERBLOCKDURATION: // unsigned-int
1139 $cluster_block_group[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
1142 case EBML_ID_CLUSTERREFERENCEBLOCK: // signed-int
1143 $cluster_block_group[$sub_subelement['id_name']][] = getid3_lib::BigEndian2Int($sub_subelement['data'], false, true);
1146 case EBML_ID_CLUSTERCODECSTATE:
1147 $cluster_block_group[$sub_subelement['id_name']] = getid3_lib::trimNullByte($sub_subelement['data']);
1151 $this->unhandledElement('clusters.blockgroup', __LINE__, $sub_subelement);
1154 $cluster_entry[$subelement['id_name']][] = $cluster_block_group;
1157 case EBML_ID_CLUSTERSIMPLEBLOCK:
1158 $cluster_entry[$subelement['id_name']][] = $this->HandleEMBLClusterBlock($subelement, EBML_ID_CLUSTERSIMPLEBLOCK, $info);
1162 $this->unhandledElement('cluster', __LINE__, $subelement);
1164 $this->current_offset = $subelement['end'];
1166 if (!self::$hide_clusters) {
1167 $info['matroska']['cluster'][] = $cluster_entry;
1170 // check to see if all the data we need exists already, if so, break out of the loop
1171 if (!self::$parse_whole_file) {
1172 if (isset($info['matroska']['info']) && is_array($info['matroska']['info'])) {
1173 if (isset($info['matroska']['tracks']['tracks']) && is_array($info['matroska']['tracks']['tracks'])) {
1174 if (count($info['matroska']['track_data_offsets']) == count($info['matroska']['tracks']['tracks'])) {
1183 $this->unhandledElement('segment', __LINE__, $element_data);
1189 $this->unhandledElement('root', __LINE__, $top_element);
1194 private function EnsureBufferHasEnoughData($min_data=1024) {
1195 if (($this->current_offset - $this->EBMLbuffer_offset) >= ($this->EBMLbuffer_length - $min_data)) {
1196 $read_bytes = max($min_data, $this->getid3->fread_buffer_size());
1199 $this->fseek($this->current_offset);
1200 $this->EBMLbuffer_offset = $this->current_offset;
1201 $this->EBMLbuffer = $this->fread($read_bytes);
1202 $this->EBMLbuffer_length = strlen($this->EBMLbuffer);
1203 } catch (getid3_exception $e) {
1204 $this->warning('EBML parser: '.$e->getMessage());
1208 if ($this->EBMLbuffer_length == 0 && $this->feof()) {
1209 return $this->error('EBML parser: ran out of file at offset '.$this->current_offset);
1215 private function readEBMLint() {
1216 $actual_offset = $this->current_offset - $this->EBMLbuffer_offset;
1218 // get length of integer
1219 $first_byte_int = ord($this->EBMLbuffer[$actual_offset]);
1220 if (0x80 & $first_byte_int) {
1222 } elseif (0x40 & $first_byte_int) {
1224 } elseif (0x20 & $first_byte_int) {
1226 } elseif (0x10 & $first_byte_int) {
1228 } elseif (0x08 & $first_byte_int) {
1230 } elseif (0x04 & $first_byte_int) {
1232 } elseif (0x02 & $first_byte_int) {
1234 } elseif (0x01 & $first_byte_int) {
1237 throw new Exception('invalid EBML integer (leading 0x00) at '.$this->current_offset);
1241 $int_value = self::EBML2Int(substr($this->EBMLbuffer, $actual_offset, $length));
1242 $this->current_offset += $length;
1247 private function readEBMLelementData($length, $check_buffer=false) {
1248 if ($check_buffer && !$this->EnsureBufferHasEnoughData($length)) {
1251 $data = substr($this->EBMLbuffer, $this->current_offset - $this->EBMLbuffer_offset, $length);
1252 $this->current_offset += $length;
1256 private function getEBMLelement(&$element, $parent_end, $get_data=false) {
1257 if ($this->current_offset >= $parent_end) {
1261 if (!$this->EnsureBufferHasEnoughData()) {
1262 $this->current_offset = PHP_INT_MAX; // do not exit parser right now, allow to finish current loop to gather maximum information
1269 $element['offset'] = $this->current_offset;
1272 $element['id'] = $this->readEBMLint();
1275 $element['id_name'] = self::EBMLidName($element['id']);
1278 $element['length'] = $this->readEBMLint();
1281 $element['end'] = $this->current_offset + $element['length'];
1284 $dont_parse = (in_array($element['id'], $this->unuseful_elements) || $element['id_name'] == dechex($element['id']));
1285 if (($get_data === true || (is_array($get_data) && !in_array($element['id'], $get_data))) && !$dont_parse) {
1286 $element['data'] = $this->readEBMLelementData($element['length'], $element);
1292 private function unhandledElement($type, $line, $element) {
1293 // warn only about unknown and missed elements, not about unuseful
1294 if (!in_array($element['id'], $this->unuseful_elements)) {
1295 $this->warning('Unhandled '.$type.' element ['.basename(__FILE__).':'.$line.'] ('.$element['id'].'::'.$element['id_name'].' ['.$element['length'].' bytes]) at '.$element['offset']);
1298 // increase offset for unparsed elements
1299 if (!isset($element['data'])) {
1300 $this->current_offset = $element['end'];
1304 private function ExtractCommentsSimpleTag($SimpleTagArray) {
1305 if (!empty($SimpleTagArray['SimpleTag'])) {
1306 foreach ($SimpleTagArray['SimpleTag'] as $SimpleTagKey => $SimpleTagData) {
1307 if (!empty($SimpleTagData['TagName']) && !empty($SimpleTagData['TagString'])) {
1308 $this->getid3->info['matroska']['comments'][strtolower($SimpleTagData['TagName'])][] = $SimpleTagData['TagString'];
1310 if (!empty($SimpleTagData['SimpleTag'])) {
1311 $this->ExtractCommentsSimpleTag($SimpleTagData);
1319 private function HandleEMBLSimpleTag($parent_end) {
1320 $simpletag_entry = array();
1322 while ($this->getEBMLelement($element, $parent_end, array(EBML_ID_SIMPLETAG))) {
1323 switch ($element['id']) {
1325 case EBML_ID_TAGNAME:
1326 case EBML_ID_TAGLANGUAGE:
1327 case EBML_ID_TAGSTRING:
1328 case EBML_ID_TAGBINARY:
1329 $simpletag_entry[$element['id_name']] = $element['data'];
1332 case EBML_ID_SIMPLETAG:
1333 $simpletag_entry[$element['id_name']][] = $this->HandleEMBLSimpleTag($element['end']);
1336 case EBML_ID_TAGDEFAULT:
1337 $simpletag_entry[$element['id_name']] = (bool)getid3_lib::BigEndian2Int($element['data']);
1341 $this->unhandledElement('tag.simpletag', __LINE__, $element);
1345 return $simpletag_entry;
1348 private function HandleEMBLClusterBlock($element, $block_type, &$info) {
1349 // http://www.matroska.org/technical/specs/index.html#block_structure
1350 // http://www.matroska.org/technical/specs/index.html#simpleblock_structure
1352 $block_data = array();
1353 $block_data['tracknumber'] = $this->readEBMLint();
1354 $block_data['timecode'] = getid3_lib::BigEndian2Int($this->readEBMLelementData(2), false, true);
1355 $block_data['flags_raw'] = getid3_lib::BigEndian2Int($this->readEBMLelementData(1));
1357 if ($block_type == EBML_ID_CLUSTERSIMPLEBLOCK) {
1358 $block_data['flags']['keyframe'] = (($block_data['flags_raw'] & 0x80) >> 7);
1359 //$block_data['flags']['reserved1'] = (($block_data['flags_raw'] & 0x70) >> 4);
1362 //$block_data['flags']['reserved1'] = (($block_data['flags_raw'] & 0xF0) >> 4);
1364 $block_data['flags']['invisible'] = (bool)(($block_data['flags_raw'] & 0x08) >> 3);
1365 $block_data['flags']['lacing'] = (($block_data['flags_raw'] & 0x06) >> 1); // 00=no lacing; 01=Xiph lacing; 11=EBML lacing; 10=fixed-size lacing
1366 if ($block_type == EBML_ID_CLUSTERSIMPLEBLOCK) {
1367 $block_data['flags']['discardable'] = (($block_data['flags_raw'] & 0x01));
1370 //$block_data['flags']['reserved2'] = (($block_data['flags_raw'] & 0x01) >> 0);
1372 $block_data['flags']['lacing_type'] = self::BlockLacingType($block_data['flags']['lacing']);
1374 // Lace (when lacing bit is set)
1375 if ($block_data['flags']['lacing'] > 0) {
1376 $block_data['lace_frames'] = getid3_lib::BigEndian2Int($this->readEBMLelementData(1)) + 1; // Number of frames in the lace-1 (uint8)
1377 if ($block_data['flags']['lacing'] != 0x02) {
1378 for ($i = 1; $i < $block_data['lace_frames']; $i ++) { // Lace-coded size of each frame of the lace, except for the last one (multiple uint8). *This is not used with Fixed-size lacing as it is calculated automatically from (total size of lace) / (number of frames in lace).
1379 if ($block_data['flags']['lacing'] == 0x03) { // EBML lacing
1380 $block_data['lace_frames_size'][$i] = $this->readEBMLint(); // TODO: read size correctly, calc size for the last frame. For now offsets are deteminded OK with readEBMLint() and that's the most important thing.
1382 else { // Xiph lacing
1383 $block_data['lace_frames_size'][$i] = 0;
1385 $size = getid3_lib::BigEndian2Int($this->readEBMLelementData(1));
1386 $block_data['lace_frames_size'][$i] += $size;
1388 while ($size == 255);
1391 if ($block_data['flags']['lacing'] == 0x01) { // calc size of the last frame only for Xiph lacing, till EBML sizes are now anyway determined incorrectly
1392 $block_data['lace_frames_size'][] = $element['end'] - $this->current_offset - array_sum($block_data['lace_frames_size']);
1397 if (!isset($info['matroska']['track_data_offsets'][$block_data['tracknumber']])) {
1398 $info['matroska']['track_data_offsets'][$block_data['tracknumber']]['offset'] = $this->current_offset;
1399 $info['matroska']['track_data_offsets'][$block_data['tracknumber']]['length'] = $element['end'] - $this->current_offset;
1400 //$info['matroska']['track_data_offsets'][$block_data['tracknumber']]['total_length'] = 0;
1402 //$info['matroska']['track_data_offsets'][$block_data['tracknumber']]['total_length'] += $info['matroska']['track_data_offsets'][$block_data['tracknumber']]['length'];
1403 //$info['matroska']['track_data_offsets'][$block_data['tracknumber']]['duration'] = $block_data['timecode'] * ((isset($info['matroska']['info'][0]['TimecodeScale']) ? $info['matroska']['info'][0]['TimecodeScale'] : 1000000) / 1000000000);
1405 // set offset manually
1406 $this->current_offset = $element['end'];
1411 private static function EBML2Int($EBMLstring) {
1412 // http://matroska.org/specs/
1414 // Element ID coded with an UTF-8 like system:
1415 // 1xxx xxxx - Class A IDs (2^7 -2 possible values) (base 0x8X)
1416 // 01xx xxxx xxxx xxxx - Class B IDs (2^14-2 possible values) (base 0x4X 0xXX)
1417 // 001x xxxx xxxx xxxx xxxx xxxx - Class C IDs (2^21-2 possible values) (base 0x2X 0xXX 0xXX)
1418 // 0001 xxxx xxxx xxxx xxxx xxxx xxxx xxxx - Class D IDs (2^28-2 possible values) (base 0x1X 0xXX 0xXX 0xXX)
1419 // Values with all x at 0 and 1 are reserved (hence the -2).
1421 // Data size, in octets, is also coded with an UTF-8 like system :
1422 // 1xxx xxxx - value 0 to 2^7-2
1423 // 01xx xxxx xxxx xxxx - value 0 to 2^14-2
1424 // 001x xxxx xxxx xxxx xxxx xxxx - value 0 to 2^21-2
1425 // 0001 xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^28-2
1426 // 0000 1xxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^35-2
1427 // 0000 01xx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^42-2
1428 // 0000 001x xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^49-2
1429 // 0000 0001 xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx - value 0 to 2^56-2
1431 $first_byte_int = ord($EBMLstring[0]);
1432 if (0x80 & $first_byte_int) {
1433 $EBMLstring[0] = chr($first_byte_int & 0x7F);
1434 } elseif (0x40 & $first_byte_int) {
1435 $EBMLstring[0] = chr($first_byte_int & 0x3F);
1436 } elseif (0x20 & $first_byte_int) {
1437 $EBMLstring[0] = chr($first_byte_int & 0x1F);
1438 } elseif (0x10 & $first_byte_int) {
1439 $EBMLstring[0] = chr($first_byte_int & 0x0F);
1440 } elseif (0x08 & $first_byte_int) {
1441 $EBMLstring[0] = chr($first_byte_int & 0x07);
1442 } elseif (0x04 & $first_byte_int) {
1443 $EBMLstring[0] = chr($first_byte_int & 0x03);
1444 } elseif (0x02 & $first_byte_int) {
1445 $EBMLstring[0] = chr($first_byte_int & 0x01);
1446 } elseif (0x01 & $first_byte_int) {
1447 $EBMLstring[0] = chr($first_byte_int & 0x00);
1450 return getid3_lib::BigEndian2Int($EBMLstring);
1453 private static function EBMLdate2unix($EBMLdatestamp) {
1454 // Date - signed 8 octets integer in nanoseconds with 0 indicating the precise beginning of the millennium (at 2001-01-01T00:00:00,000000000 UTC)
1455 // 978307200 == mktime(0, 0, 0, 1, 1, 2001) == January 1, 2001 12:00:00am UTC
1456 return round(($EBMLdatestamp / 1000000000) + 978307200);
1459 public static function TargetTypeValue($target_type) {
1460 // http://www.matroska.org/technical/specs/tagging/index.html
1461 static $TargetTypeValue = array();
1462 if (empty($TargetTypeValue)) {
1463 $TargetTypeValue[10] = 'A: ~ V:shot'; // the lowest hierarchy found in music or movies
1464 $TargetTypeValue[20] = 'A:subtrack/part/movement ~ V:scene'; // corresponds to parts of a track for audio (like a movement)
1465 $TargetTypeValue[30] = 'A:track/song ~ V:chapter'; // the common parts of an album or a movie
1466 $TargetTypeValue[40] = 'A:part/session ~ V:part/session'; // when an album or episode has different logical parts
1467 $TargetTypeValue[50] = 'A:album/opera/concert ~ V:movie/episode/concert'; // the most common grouping level of music and video (equals to an episode for TV series)
1468 $TargetTypeValue[60] = 'A:edition/issue/volume/opus ~ V:season/sequel/volume'; // a list of lower levels grouped together
1469 $TargetTypeValue[70] = 'A:collection ~ V:collection'; // the high hierarchy consisting of many different lower items
1471 return (isset($TargetTypeValue[$target_type]) ? $TargetTypeValue[$target_type] : $target_type);
1474 public static function BlockLacingType($lacingtype) {
1475 // http://matroska.org/technical/specs/index.html#block_structure
1476 static $BlockLacingType = array();
1477 if (empty($BlockLacingType)) {
1478 $BlockLacingType[0x00] = 'no lacing';
1479 $BlockLacingType[0x01] = 'Xiph lacing';
1480 $BlockLacingType[0x02] = 'fixed-size lacing';
1481 $BlockLacingType[0x03] = 'EBML lacing';
1483 return (isset($BlockLacingType[$lacingtype]) ? $BlockLacingType[$lacingtype] : $lacingtype);
1486 public static function CodecIDtoCommonName($codecid) {
1487 // http://www.matroska.org/technical/specs/codecid/index.html
1488 static $CodecIDlist = array();
1489 if (empty($CodecIDlist)) {
1490 $CodecIDlist['A_AAC'] = 'aac';
1491 $CodecIDlist['A_AAC/MPEG2/LC'] = 'aac';
1492 $CodecIDlist['A_AC3'] = 'ac3';
1493 $CodecIDlist['A_DTS'] = 'dts';
1494 $CodecIDlist['A_FLAC'] = 'flac';
1495 $CodecIDlist['A_MPEG/L1'] = 'mp1';
1496 $CodecIDlist['A_MPEG/L2'] = 'mp2';
1497 $CodecIDlist['A_MPEG/L3'] = 'mp3';
1498 $CodecIDlist['A_PCM/INT/LIT'] = 'pcm'; // PCM Integer Little Endian
1499 $CodecIDlist['A_PCM/INT/BIG'] = 'pcm'; // PCM Integer Big Endian
1500 $CodecIDlist['A_QUICKTIME/QDMC'] = 'quicktime'; // Quicktime: QDesign Music
1501 $CodecIDlist['A_QUICKTIME/QDM2'] = 'quicktime'; // Quicktime: QDesign Music v2
1502 $CodecIDlist['A_VORBIS'] = 'vorbis';
1503 $CodecIDlist['V_MPEG1'] = 'mpeg';
1504 $CodecIDlist['V_THEORA'] = 'theora';
1505 $CodecIDlist['V_REAL/RV40'] = 'real';
1506 $CodecIDlist['V_REAL/RV10'] = 'real';
1507 $CodecIDlist['V_REAL/RV20'] = 'real';
1508 $CodecIDlist['V_REAL/RV30'] = 'real';
1509 $CodecIDlist['V_QUICKTIME'] = 'quicktime'; // Quicktime
1510 $CodecIDlist['V_MPEG4/ISO/AP'] = 'mpeg4';
1511 $CodecIDlist['V_MPEG4/ISO/ASP'] = 'mpeg4';
1512 $CodecIDlist['V_MPEG4/ISO/AVC'] = 'h264';
1513 $CodecIDlist['V_MPEG4/ISO/SP'] = 'mpeg4';
1514 $CodecIDlist['V_VP8'] = 'vp8';
1515 $CodecIDlist['V_MS/VFW/FOURCC'] = 'vcm'; // Microsoft (TM) Video Codec Manager (VCM)
1516 $CodecIDlist['A_MS/ACM'] = 'acm'; // Microsoft (TM) Audio Codec Manager (ACM)
1518 return (isset($CodecIDlist[$codecid]) ? $CodecIDlist[$codecid] : $codecid);
1521 private static function EBMLidName($value) {
1522 static $EBMLidList = array();
1523 if (empty($EBMLidList)) {
1524 $EBMLidList[EBML_ID_ASPECTRATIOTYPE] = 'AspectRatioType';
1525 $EBMLidList[EBML_ID_ATTACHEDFILE] = 'AttachedFile';
1526 $EBMLidList[EBML_ID_ATTACHMENTLINK] = 'AttachmentLink';
1527 $EBMLidList[EBML_ID_ATTACHMENTS] = 'Attachments';
1528 $EBMLidList[EBML_ID_AUDIO] = 'Audio';
1529 $EBMLidList[EBML_ID_BITDEPTH] = 'BitDepth';
1530 $EBMLidList[EBML_ID_CHANNELPOSITIONS] = 'ChannelPositions';
1531 $EBMLidList[EBML_ID_CHANNELS] = 'Channels';
1532 $EBMLidList[EBML_ID_CHAPCOUNTRY] = 'ChapCountry';
1533 $EBMLidList[EBML_ID_CHAPLANGUAGE] = 'ChapLanguage';
1534 $EBMLidList[EBML_ID_CHAPPROCESS] = 'ChapProcess';
1535 $EBMLidList[EBML_ID_CHAPPROCESSCODECID] = 'ChapProcessCodecID';
1536 $EBMLidList[EBML_ID_CHAPPROCESSCOMMAND] = 'ChapProcessCommand';
1537 $EBMLidList[EBML_ID_CHAPPROCESSDATA] = 'ChapProcessData';
1538 $EBMLidList[EBML_ID_CHAPPROCESSPRIVATE] = 'ChapProcessPrivate';
1539 $EBMLidList[EBML_ID_CHAPPROCESSTIME] = 'ChapProcessTime';
1540 $EBMLidList[EBML_ID_CHAPSTRING] = 'ChapString';
1541 $EBMLidList[EBML_ID_CHAPTERATOM] = 'ChapterAtom';
1542 $EBMLidList[EBML_ID_CHAPTERDISPLAY] = 'ChapterDisplay';
1543 $EBMLidList[EBML_ID_CHAPTERFLAGENABLED] = 'ChapterFlagEnabled';
1544 $EBMLidList[EBML_ID_CHAPTERFLAGHIDDEN] = 'ChapterFlagHidden';
1545 $EBMLidList[EBML_ID_CHAPTERPHYSICALEQUIV] = 'ChapterPhysicalEquiv';
1546 $EBMLidList[EBML_ID_CHAPTERS] = 'Chapters';
1547 $EBMLidList[EBML_ID_CHAPTERSEGMENTEDITIONUID] = 'ChapterSegmentEditionUID';
1548 $EBMLidList[EBML_ID_CHAPTERSEGMENTUID] = 'ChapterSegmentUID';
1549 $EBMLidList[EBML_ID_CHAPTERTIMEEND] = 'ChapterTimeEnd';
1550 $EBMLidList[EBML_ID_CHAPTERTIMESTART] = 'ChapterTimeStart';
1551 $EBMLidList[EBML_ID_CHAPTERTRACK] = 'ChapterTrack';
1552 $EBMLidList[EBML_ID_CHAPTERTRACKNUMBER] = 'ChapterTrackNumber';
1553 $EBMLidList[EBML_ID_CHAPTERTRANSLATE] = 'ChapterTranslate';
1554 $EBMLidList[EBML_ID_CHAPTERTRANSLATECODEC] = 'ChapterTranslateCodec';
1555 $EBMLidList[EBML_ID_CHAPTERTRANSLATEEDITIONUID] = 'ChapterTranslateEditionUID';
1556 $EBMLidList[EBML_ID_CHAPTERTRANSLATEID] = 'ChapterTranslateID';
1557 $EBMLidList[EBML_ID_CHAPTERUID] = 'ChapterUID';
1558 $EBMLidList[EBML_ID_CLUSTER] = 'Cluster';
1559 $EBMLidList[EBML_ID_CLUSTERBLOCK] = 'ClusterBlock';
1560 $EBMLidList[EBML_ID_CLUSTERBLOCKADDID] = 'ClusterBlockAddID';
1561 $EBMLidList[EBML_ID_CLUSTERBLOCKADDITIONAL] = 'ClusterBlockAdditional';
1562 $EBMLidList[EBML_ID_CLUSTERBLOCKADDITIONID] = 'ClusterBlockAdditionID';
1563 $EBMLidList[EBML_ID_CLUSTERBLOCKADDITIONS] = 'ClusterBlockAdditions';
1564 $EBMLidList[EBML_ID_CLUSTERBLOCKDURATION] = 'ClusterBlockDuration';
1565 $EBMLidList[EBML_ID_CLUSTERBLOCKGROUP] = 'ClusterBlockGroup';
1566 $EBMLidList[EBML_ID_CLUSTERBLOCKMORE] = 'ClusterBlockMore';
1567 $EBMLidList[EBML_ID_CLUSTERBLOCKVIRTUAL] = 'ClusterBlockVirtual';
1568 $EBMLidList[EBML_ID_CLUSTERCODECSTATE] = 'ClusterCodecState';
1569 $EBMLidList[EBML_ID_CLUSTERDELAY] = 'ClusterDelay';
1570 $EBMLidList[EBML_ID_CLUSTERDURATION] = 'ClusterDuration';
1571 $EBMLidList[EBML_ID_CLUSTERENCRYPTEDBLOCK] = 'ClusterEncryptedBlock';
1572 $EBMLidList[EBML_ID_CLUSTERFRAMENUMBER] = 'ClusterFrameNumber';
1573 $EBMLidList[EBML_ID_CLUSTERLACENUMBER] = 'ClusterLaceNumber';
1574 $EBMLidList[EBML_ID_CLUSTERPOSITION] = 'ClusterPosition';
1575 $EBMLidList[EBML_ID_CLUSTERPREVSIZE] = 'ClusterPrevSize';
1576 $EBMLidList[EBML_ID_CLUSTERREFERENCEBLOCK] = 'ClusterReferenceBlock';
1577 $EBMLidList[EBML_ID_CLUSTERREFERENCEPRIORITY] = 'ClusterReferencePriority';
1578 $EBMLidList[EBML_ID_CLUSTERREFERENCEVIRTUAL] = 'ClusterReferenceVirtual';
1579 $EBMLidList[EBML_ID_CLUSTERSILENTTRACKNUMBER] = 'ClusterSilentTrackNumber';
1580 $EBMLidList[EBML_ID_CLUSTERSILENTTRACKS] = 'ClusterSilentTracks';
1581 $EBMLidList[EBML_ID_CLUSTERSIMPLEBLOCK] = 'ClusterSimpleBlock';
1582 $EBMLidList[EBML_ID_CLUSTERTIMECODE] = 'ClusterTimecode';
1583 $EBMLidList[EBML_ID_CLUSTERTIMESLICE] = 'ClusterTimeSlice';
1584 $EBMLidList[EBML_ID_CODECDECODEALL] = 'CodecDecodeAll';
1585 $EBMLidList[EBML_ID_CODECDOWNLOADURL] = 'CodecDownloadURL';
1586 $EBMLidList[EBML_ID_CODECID] = 'CodecID';
1587 $EBMLidList[EBML_ID_CODECINFOURL] = 'CodecInfoURL';
1588 $EBMLidList[EBML_ID_CODECNAME] = 'CodecName';
1589 $EBMLidList[EBML_ID_CODECPRIVATE] = 'CodecPrivate';
1590 $EBMLidList[EBML_ID_CODECSETTINGS] = 'CodecSettings';
1591 $EBMLidList[EBML_ID_COLOURSPACE] = 'ColourSpace';
1592 $EBMLidList[EBML_ID_CONTENTCOMPALGO] = 'ContentCompAlgo';
1593 $EBMLidList[EBML_ID_CONTENTCOMPRESSION] = 'ContentCompression';
1594 $EBMLidList[EBML_ID_CONTENTCOMPSETTINGS] = 'ContentCompSettings';
1595 $EBMLidList[EBML_ID_CONTENTENCALGO] = 'ContentEncAlgo';
1596 $EBMLidList[EBML_ID_CONTENTENCKEYID] = 'ContentEncKeyID';
1597 $EBMLidList[EBML_ID_CONTENTENCODING] = 'ContentEncoding';
1598 $EBMLidList[EBML_ID_CONTENTENCODINGORDER] = 'ContentEncodingOrder';
1599 $EBMLidList[EBML_ID_CONTENTENCODINGS] = 'ContentEncodings';
1600 $EBMLidList[EBML_ID_CONTENTENCODINGSCOPE] = 'ContentEncodingScope';
1601 $EBMLidList[EBML_ID_CONTENTENCODINGTYPE] = 'ContentEncodingType';
1602 $EBMLidList[EBML_ID_CONTENTENCRYPTION] = 'ContentEncryption';
1603 $EBMLidList[EBML_ID_CONTENTSIGALGO] = 'ContentSigAlgo';
1604 $EBMLidList[EBML_ID_CONTENTSIGHASHALGO] = 'ContentSigHashAlgo';
1605 $EBMLidList[EBML_ID_CONTENTSIGKEYID] = 'ContentSigKeyID';
1606 $EBMLidList[EBML_ID_CONTENTSIGNATURE] = 'ContentSignature';
1607 $EBMLidList[EBML_ID_CRC32] = 'CRC32';
1608 $EBMLidList[EBML_ID_CUEBLOCKNUMBER] = 'CueBlockNumber';
1609 $EBMLidList[EBML_ID_CUECLUSTERPOSITION] = 'CueClusterPosition';
1610 $EBMLidList[EBML_ID_CUECODECSTATE] = 'CueCodecState';
1611 $EBMLidList[EBML_ID_CUEPOINT] = 'CuePoint';
1612 $EBMLidList[EBML_ID_CUEREFCLUSTER] = 'CueRefCluster';
1613 $EBMLidList[EBML_ID_CUEREFCODECSTATE] = 'CueRefCodecState';
1614 $EBMLidList[EBML_ID_CUEREFERENCE] = 'CueReference';
1615 $EBMLidList[EBML_ID_CUEREFNUMBER] = 'CueRefNumber';
1616 $EBMLidList[EBML_ID_CUEREFTIME] = 'CueRefTime';
1617 $EBMLidList[EBML_ID_CUES] = 'Cues';
1618 $EBMLidList[EBML_ID_CUETIME] = 'CueTime';
1619 $EBMLidList[EBML_ID_CUETRACK] = 'CueTrack';
1620 $EBMLidList[EBML_ID_CUETRACKPOSITIONS] = 'CueTrackPositions';
1621 $EBMLidList[EBML_ID_DATEUTC] = 'DateUTC';
1622 $EBMLidList[EBML_ID_DEFAULTDURATION] = 'DefaultDuration';
1623 $EBMLidList[EBML_ID_DISPLAYHEIGHT] = 'DisplayHeight';
1624 $EBMLidList[EBML_ID_DISPLAYUNIT] = 'DisplayUnit';
1625 $EBMLidList[EBML_ID_DISPLAYWIDTH] = 'DisplayWidth';
1626 $EBMLidList[EBML_ID_DOCTYPE] = 'DocType';
1627 $EBMLidList[EBML_ID_DOCTYPEREADVERSION] = 'DocTypeReadVersion';
1628 $EBMLidList[EBML_ID_DOCTYPEVERSION] = 'DocTypeVersion';
1629 $EBMLidList[EBML_ID_DURATION] = 'Duration';
1630 $EBMLidList[EBML_ID_EBML] = 'EBML';
1631 $EBMLidList[EBML_ID_EBMLMAXIDLENGTH] = 'EBMLMaxIDLength';
1632 $EBMLidList[EBML_ID_EBMLMAXSIZELENGTH] = 'EBMLMaxSizeLength';
1633 $EBMLidList[EBML_ID_EBMLREADVERSION] = 'EBMLReadVersion';
1634 $EBMLidList[EBML_ID_EBMLVERSION] = 'EBMLVersion';
1635 $EBMLidList[EBML_ID_EDITIONENTRY] = 'EditionEntry';
1636 $EBMLidList[EBML_ID_EDITIONFLAGDEFAULT] = 'EditionFlagDefault';
1637 $EBMLidList[EBML_ID_EDITIONFLAGHIDDEN] = 'EditionFlagHidden';
1638 $EBMLidList[EBML_ID_EDITIONFLAGORDERED] = 'EditionFlagOrdered';
1639 $EBMLidList[EBML_ID_EDITIONUID] = 'EditionUID';
1640 $EBMLidList[EBML_ID_FILEDATA] = 'FileData';
1641 $EBMLidList[EBML_ID_FILEDESCRIPTION] = 'FileDescription';
1642 $EBMLidList[EBML_ID_FILEMIMETYPE] = 'FileMimeType';
1643 $EBMLidList[EBML_ID_FILENAME] = 'FileName';
1644 $EBMLidList[EBML_ID_FILEREFERRAL] = 'FileReferral';
1645 $EBMLidList[EBML_ID_FILEUID] = 'FileUID';
1646 $EBMLidList[EBML_ID_FLAGDEFAULT] = 'FlagDefault';
1647 $EBMLidList[EBML_ID_FLAGENABLED] = 'FlagEnabled';
1648 $EBMLidList[EBML_ID_FLAGFORCED] = 'FlagForced';
1649 $EBMLidList[EBML_ID_FLAGINTERLACED] = 'FlagInterlaced';
1650 $EBMLidList[EBML_ID_FLAGLACING] = 'FlagLacing';
1651 $EBMLidList[EBML_ID_GAMMAVALUE] = 'GammaValue';
1652 $EBMLidList[EBML_ID_INFO] = 'Info';
1653 $EBMLidList[EBML_ID_LANGUAGE] = 'Language';
1654 $EBMLidList[EBML_ID_MAXBLOCKADDITIONID] = 'MaxBlockAdditionID';
1655 $EBMLidList[EBML_ID_MAXCACHE] = 'MaxCache';
1656 $EBMLidList[EBML_ID_MINCACHE] = 'MinCache';
1657 $EBMLidList[EBML_ID_MUXINGAPP] = 'MuxingApp';
1658 $EBMLidList[EBML_ID_NAME] = 'Name';
1659 $EBMLidList[EBML_ID_NEXTFILENAME] = 'NextFilename';
1660 $EBMLidList[EBML_ID_NEXTUID] = 'NextUID';
1661 $EBMLidList[EBML_ID_OUTPUTSAMPLINGFREQUENCY] = 'OutputSamplingFrequency';
1662 $EBMLidList[EBML_ID_PIXELCROPBOTTOM] = 'PixelCropBottom';
1663 $EBMLidList[EBML_ID_PIXELCROPLEFT] = 'PixelCropLeft';
1664 $EBMLidList[EBML_ID_PIXELCROPRIGHT] = 'PixelCropRight';
1665 $EBMLidList[EBML_ID_PIXELCROPTOP] = 'PixelCropTop';
1666 $EBMLidList[EBML_ID_PIXELHEIGHT] = 'PixelHeight';
1667 $EBMLidList[EBML_ID_PIXELWIDTH] = 'PixelWidth';
1668 $EBMLidList[EBML_ID_PREVFILENAME] = 'PrevFilename';
1669 $EBMLidList[EBML_ID_PREVUID] = 'PrevUID';
1670 $EBMLidList[EBML_ID_SAMPLINGFREQUENCY] = 'SamplingFrequency';
1671 $EBMLidList[EBML_ID_SEEK] = 'Seek';
1672 $EBMLidList[EBML_ID_SEEKHEAD] = 'SeekHead';
1673 $EBMLidList[EBML_ID_SEEKID] = 'SeekID';
1674 $EBMLidList[EBML_ID_SEEKPOSITION] = 'SeekPosition';
1675 $EBMLidList[EBML_ID_SEGMENT] = 'Segment';
1676 $EBMLidList[EBML_ID_SEGMENTFAMILY] = 'SegmentFamily';
1677 $EBMLidList[EBML_ID_SEGMENTFILENAME] = 'SegmentFilename';
1678 $EBMLidList[EBML_ID_SEGMENTUID] = 'SegmentUID';
1679 $EBMLidList[EBML_ID_SIMPLETAG] = 'SimpleTag';
1680 $EBMLidList[EBML_ID_CLUSTERSLICES] = 'ClusterSlices';
1681 $EBMLidList[EBML_ID_STEREOMODE] = 'StereoMode';
1682 $EBMLidList[EBML_ID_OLDSTEREOMODE] = 'OldStereoMode';
1683 $EBMLidList[EBML_ID_TAG] = 'Tag';
1684 $EBMLidList[EBML_ID_TAGATTACHMENTUID] = 'TagAttachmentUID';
1685 $EBMLidList[EBML_ID_TAGBINARY] = 'TagBinary';
1686 $EBMLidList[EBML_ID_TAGCHAPTERUID] = 'TagChapterUID';
1687 $EBMLidList[EBML_ID_TAGDEFAULT] = 'TagDefault';
1688 $EBMLidList[EBML_ID_TAGEDITIONUID] = 'TagEditionUID';
1689 $EBMLidList[EBML_ID_TAGLANGUAGE] = 'TagLanguage';
1690 $EBMLidList[EBML_ID_TAGNAME] = 'TagName';
1691 $EBMLidList[EBML_ID_TAGTRACKUID] = 'TagTrackUID';
1692 $EBMLidList[EBML_ID_TAGS] = 'Tags';
1693 $EBMLidList[EBML_ID_TAGSTRING] = 'TagString';
1694 $EBMLidList[EBML_ID_TARGETS] = 'Targets';
1695 $EBMLidList[EBML_ID_TARGETTYPE] = 'TargetType';
1696 $EBMLidList[EBML_ID_TARGETTYPEVALUE] = 'TargetTypeValue';
1697 $EBMLidList[EBML_ID_TIMECODESCALE] = 'TimecodeScale';
1698 $EBMLidList[EBML_ID_TITLE] = 'Title';
1699 $EBMLidList[EBML_ID_TRACKENTRY] = 'TrackEntry';
1700 $EBMLidList[EBML_ID_TRACKNUMBER] = 'TrackNumber';
1701 $EBMLidList[EBML_ID_TRACKOFFSET] = 'TrackOffset';
1702 $EBMLidList[EBML_ID_TRACKOVERLAY] = 'TrackOverlay';
1703 $EBMLidList[EBML_ID_TRACKS] = 'Tracks';
1704 $EBMLidList[EBML_ID_TRACKTIMECODESCALE] = 'TrackTimecodeScale';
1705 $EBMLidList[EBML_ID_TRACKTRANSLATE] = 'TrackTranslate';
1706 $EBMLidList[EBML_ID_TRACKTRANSLATECODEC] = 'TrackTranslateCodec';
1707 $EBMLidList[EBML_ID_TRACKTRANSLATEEDITIONUID] = 'TrackTranslateEditionUID';
1708 $EBMLidList[EBML_ID_TRACKTRANSLATETRACKID] = 'TrackTranslateTrackID';
1709 $EBMLidList[EBML_ID_TRACKTYPE] = 'TrackType';
1710 $EBMLidList[EBML_ID_TRACKUID] = 'TrackUID';
1711 $EBMLidList[EBML_ID_VIDEO] = 'Video';
1712 $EBMLidList[EBML_ID_VOID] = 'Void';
1713 $EBMLidList[EBML_ID_WRITINGAPP] = 'WritingApp';
1716 return (isset($EBMLidList[$value]) ? $EBMLidList[$value] : dechex($value));
1719 public static function displayUnit($value) {
1720 // http://www.matroska.org/technical/specs/index.html#DisplayUnit
1721 static $units = array(
1725 3 => 'Display Aspect Ratio');
1727 return (isset($units[$value]) ? $units[$value] : 'unknown');
1730 private static function getDefaultStreamInfo($streams)
1732 foreach (array_reverse($streams) as $stream) {
1733 if ($stream['default']) {
1738 $unset = array('default', 'name');
1739 foreach ($unset as $u) {
1740 if (isset($stream[$u])) {
1746 $info['streams'] = $streams;