893 lines
33 KiB
Perl
Executable File
893 lines
33 KiB
Perl
Executable File
#------------------------------------------------------------------------------
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# File: Matroska.pm
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#
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# Description: Read meta information from Matroska multimedia files
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#
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# Revisions: 05/26/2010 - P. Harvey Created
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#
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# References: 1) http://www.matroska.org/technical/specs/index.html
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#------------------------------------------------------------------------------
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package Image::ExifTool::Matroska;
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use strict;
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use vars qw($VERSION);
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use Image::ExifTool qw(:DataAccess :Utils);
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$VERSION = '1.07';
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my %noYes = ( 0 => 'No', 1 => 'Yes' );
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# Matroska tags
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# Note: The tag ID's in the Matroska documentation include the length designation
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# (the upper bits), which is not included in the tag ID's below
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%Image::ExifTool::Matroska::Main = (
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GROUPS => { 2 => 'Video' },
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VARS => { NO_LOOKUP => 1 }, # omit tags from lookup
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NOTES => q{
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The following tags are extracted from Matroska multimedia container files.
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This container format is used by file types such as MKA, MKV, MKS and WEBM.
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For speed, ExifTool extracts tags only up to the first Cluster unless the
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Verbose (-v) or Unknown = 2 (-U) option is used. See
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L<http://www.matroska.org/technical/specs/index.html> for the official
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Matroska specification.
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},
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# supported Format's: signed, unsigned, float, date, string, utf8
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# (or undef by default)
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#
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# EBML Header
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#
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0xa45dfa3 => {
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Name => 'EBMLHeader',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x286 => { Name => 'EBMLVersion', Format => 'unsigned' },
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0x2f7 => { Name => 'EBMLReadVersion', Format => 'unsigned' },
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0x2f2 => { Name => 'EBMLMaxIDLength', Format => 'unsigned', Unknown => 1 },
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0x2f3 => { Name => 'EBMLMaxSizeLength', Format => 'unsigned', Unknown => 1 },
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0x282 => {
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Name => 'DocType',
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Format => 'string',
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# override FileType for "webm" files
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RawConv => '$self->OverrideFileType("WEBM") if $val eq "webm"; $val',
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},
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0x287 => { Name => 'DocTypeVersion', Format => 'unsigned' },
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0x285 => { Name => 'DocTypeReadVersion',Format => 'unsigned' },
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#
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# General
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#
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0x3f => { Name => 'CRC-32', Binary => 1, Unknown => 1 },
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0x6c => { Name => 'Void', NoSave => 1, Unknown => 1 },
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#
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# Signature
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#
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0xb538667 => {
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Name => 'SignatureSlot',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x3e8a => { Name => 'SignatureAlgo', Format => 'unsigned' },
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0x3e9a => { Name => 'SignatureHash', Format => 'unsigned' },
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0x3ea5 => { Name =>'SignaturePublicKey',Binary => 1, Unknown => 1 },
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0x3eb5 => { Name => 'Signature', Binary => 1, Unknown => 1 },
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0x3e5b => {
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Name => 'SignatureElements',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x3e7b => {
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Name => 'SignatureElementList',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x2532 => { Name => 'SignedElement', Binary => 1, Unknown => 1 },
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#
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# Segment
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#
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0x8538067 => {
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Name => 'SegmentHeader',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x14d9b74 => {
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Name => 'SeekHead',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0xdbb => {
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Name => 'Seek',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x13ab => { Name => 'SeekID', Binary => 1, Unknown => 1 },
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0x13ac => { Name => 'SeekPosition', Format => 'unsigned', Unknown => 1 },
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#
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# Segment Info
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#
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0x549a966 => {
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Name => 'Info',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x33a4 => { Name => 'SegmentUID', Binary => 1, Unknown => 1 },
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0x3384 => { Name => 'SegmentFileName', Format => 'utf8' },
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0x1cb923 => { Name => 'PrevUID', Binary => 1, Unknown => 1 },
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0x1c83ab => { Name => 'PrevFileName', Format => 'utf8' },
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0x1eb923 => { Name => 'NextUID', Binary => 1, Unknown => 1 },
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0x1e83bb => { Name => 'NextFileName', Format => 'utf8' },
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0x0444 => { Name => 'SegmentFamily', Binary => 1, Unknown => 1 },
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0x2924 => {
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Name => 'ChapterTranslate',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x29fc => { Name => 'ChapterTranslateEditionUID',Format => 'unsigned', Unknown => 1 },
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0x29bf => {
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Name => 'ChapterTranslateCodec',
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Format => 'unsigned',
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PrintConv => { 0 => 'Matroska Script', 1 => 'DVD Menu' },
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},
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0x29a5 => { Name => 'ChapterTranslateID',Binary => 1, Unknown => 1 },
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0xad7b1 => {
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Name => 'TimecodeScale',
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Format => 'unsigned',
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RawConv => '$$self{TimecodeScale} = $val',
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ValueConv => '$val / 1e9',
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PrintConv => '($val * 1000) . " ms"',
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},
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0x489 => {
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Name => 'Duration',
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Format => 'float',
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ValueConv => '$$self{TimecodeScale} ? $val * $$self{TimecodeScale} / 1e9 : $val',
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PrintConv => '$$self{TimecodeScale} ? ConvertDuration($val) : $val',
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},
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0x461 => {
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Name => 'DateTimeOriginal', # called "DateUTC" by the spec
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Description => 'Date/Time Original',
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Groups => { 2 => 'Time' },
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Format => 'date',
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PrintConv => '$self->ConvertDateTime($val)',
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},
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0x3ba9 => { Name => 'Title', Format => 'utf8' },
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0xd80 => { Name => 'MuxingApp', Format => 'utf8' },
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0x1741 => { Name => 'WritingApp', Format => 'utf8' },
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#
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# Cluster
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#
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0xf43b675 => {
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Name => 'Cluster',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x67 => {
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Name => 'TimeCode',
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Format => 'unsigned',
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Unknown => 1,
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ValueConv => '$$self{TimecodeScale} ? $val * $$self{TimecodeScale} / 1e9 : $val',
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PrintConv => '$$self{TimecodeScale} ? ConvertDuration($val) : $val',
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},
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0x1854 => {
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Name => 'SilentTracks',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x18d7 => { Name => 'SilentTrackNumber',Format => 'unsigned' },
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0x27 => { Name => 'Position', Format => 'unsigned' },
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0x2b => { Name => 'PrevSize', Format => 'unsigned' },
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0x23 => { Name => 'SimpleBlock', NoSave => 1, Unknown => 1 },
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0x20 => {
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Name => 'BlockGroup',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x21 => { Name => 'Block', NoSave => 1, Unknown => 1 },
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0x22 => { Name => 'BlockVirtual', NoSave => 1, Unknown => 1 },
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0x35a1 => {
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Name => 'BlockAdditions',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x26 => {
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Name => 'BlockMore',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x6e => { Name => 'BlockAddID', Format => 'unsigned', Unknown => 1 },
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0x25 => { Name => 'BlockAdditional', NoSave => 1, Unknown => 1 },
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0x1b => {
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Name => 'BlockDuration',
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Format => 'unsigned',
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Unknown => 1,
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ValueConv => '$$self{TimecodeScale} ? $val * $$self{TimecodeScale} / 1e9 : $val',
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PrintConv => '$$self{TimecodeScale} ? "$val s" : $val',
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},
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0x7a => { Name => 'ReferencePriority',Format => 'unsigned', Unknown => 1 },
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0x7b => {
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Name => 'ReferenceBlock',
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Format => 'signed',
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Unknown => 1,
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ValueConv => '$$self{TimecodeScale} ? $val * $$self{TimecodeScale} / 1e9 : $val',
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PrintConv => '$$self{TimecodeScale} ? "$val s" : $val',
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},
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0x7d => { Name => 'ReferenceVirtual', Format => 'signed', Unknown => 1 },
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0x24 => { Name => 'CodecState', Binary => 1, Unknown => 1 },
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0x0e => {
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Name => 'Slices',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x68 => {
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Name => 'TimeSlice',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x4c => { Name => 'LaceNumber', Format => 'unsigned', Unknown => 1 },
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0x4d => { Name => 'FrameNumber', Format => 'unsigned', Unknown => 1 },
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0x4b => { Name => 'BlockAdditionalID',Format => 'unsigned', Unknown => 1 },
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0x4e => { Name => 'Delay', Format => 'unsigned', Unknown => 1 },
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0x4f => { Name => 'ClusterDuration', Format => 'unsigned', Unknown => 1 },
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0x2f => { Name => 'EncryptedBlock', NoSave => 1, Unknown => 1 },
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#
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# Tracks
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#
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0x654ae6b => {
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Name => 'Tracks',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x2e => {
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Name => 'TrackEntry',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x57 => { Name => 'TrackNumber', Format => 'unsigned' },
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0x33c5 => { Name => 'TrackUID', Format => 'unsigned', Unknown => 1 },
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0x03 => {
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Name => 'TrackType',
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Format => 'unsigned',
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PrintHex => 1,
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# remember types of all tracks encountered, as well as the current track type
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RawConv => '$$self{TrackTypes}{$val} = 1; $$self{TrackType} = $val',
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PrintConv => {
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0x01 => 'Video',
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0x02 => 'Audio',
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0x03 => 'Complex', # (audio+video)
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0x10 => 'Logo',
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0x11 => 'Subtitle',
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0x12 => 'Buttons',
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0x20 => 'Control',
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},
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},
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0x39 => { Name => 'TrackUsed', Format => 'unsigned', PrintConv => \%noYes },
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0x08 => { Name => 'TrackDefault', Format => 'unsigned', PrintConv => \%noYes },
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0x15aa => { Name => 'TrackForced', Format => 'unsigned', PrintConv => \%noYes },
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0x1c => {
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Name => 'TrackLacing',
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Format => 'unsigned',
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Unknown => 1,
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PrintConv => \%noYes,
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},
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0x2de7 => { Name => 'MinCache', Format => 'unsigned', Unknown => 1 },
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0x2df8 => { Name => 'MaxCache', Format => 'unsigned', Unknown => 1 },
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0x3e383 => [
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{
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Name => 'VideoFrameRate',
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Condition => '$$self{TrackType} and $$self{TrackType} == 0x01',
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Format => 'unsigned',
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ValueConv => '$val ? 1e9 / $val : 0',
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PrintConv => 'int($val * 1000 + 0.5) / 1000',
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},{
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Name => 'DefaultDuration',
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Format => 'unsigned',
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ValueConv => '$val / 1e9',
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PrintConv => '($val * 1000) . " ms"',
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}
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],
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0x3314f => { Name => 'TrackTimecodeScale',Format => 'float' },
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0x137f => { Name => 'TrackOffset', Format => 'signed', Unknown => 1 },
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0x15ee => { Name => 'MaxBlockAdditionID',Format => 'unsigned', Unknown => 1 },
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0x136e => { Name => 'TrackName', Format => 'utf8' },
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0x2b59c => { Name => 'TrackLanguage', Format => 'string' },
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0x06 => [
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{
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Name => 'VideoCodecID',
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Condition => '$$self{TrackType} and $$self{TrackType} == 0x01',
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Format => 'string',
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},{
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Name => 'AudioCodecID',
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Condition => '$$self{TrackType} and $$self{TrackType} == 0x02',
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Format => 'string',
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},{
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Name => 'CodecID',
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Format => 'string',
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}
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],
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0x23a2 => { Name => 'CodecPrivate', Binary => 1, Unknown => 1 },
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0x58688 => [
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{
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Name => 'VideoCodecName',
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Condition => '$$self{TrackType} and $$self{TrackType} == 0x01',
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Format => 'utf8',
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},{
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Name => 'AudioCodecName',
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Condition => '$$self{TrackType} and $$self{TrackType} == 0x02',
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Format => 'utf8',
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},{
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Name => 'CodecName',
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Format => 'utf8',
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}
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],
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0x3446 => { Name => 'TrackAttachmentUID',Format => 'unsigned' },
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0x1a9697=>{ Name => 'CodecSettings', Format => 'utf8' },
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0x1b4040=>{ Name => 'CodecInfoURL', Format => 'string' },
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0x6b240 =>{ Name => 'CodecDownloadURL', Format => 'string' },
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0x2a => { Name => 'CodecDecodeAll', Format => 'unsigned', PrintConv => \%noYes },
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0x2fab => { Name => 'TrackOverlay', Format => 'unsigned', Unknown => 1 },
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0x2624 => {
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Name => 'TrackTranslate',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x26fc => { Name => 'TrackTranslateEditionUID',Format => 'unsigned', Unknown => 1 },
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0x26bf => {
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Name => 'TrackTranslateCodec',
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Format => 'unsigned',
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PrintConv => { 0 => 'Matroska Script', 1 => 'DVD Menu' },
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},
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0x26a5 => { Name => 'TrackTranslateTrackID', Binary => 1, Unknown => 1 },
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#
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# Video
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#
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0x60 => {
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Name => 'Video',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x1a => {
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Name => 'VideoScanType',
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Format => 'unsigned',
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PrintConv => {
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0 => 'Progressive',
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1 => 'Interlaced',
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},
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},
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0x13b8 => {
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Name => 'Stereo3DMode',
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Format => 'unsigned',
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Printconv => {
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0 => 'Mono',
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1 => 'Right Eye',
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2 => 'Left Eye',
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3 => 'Both Eyes',
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},
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},
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0x30 => { Name => 'ImageWidth', Format => 'unsigned' },
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0x3a => { Name => 'ImageHeight', Format => 'unsigned' },
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0x14aa => { Name => 'CropBottom', Format => 'unsigned' },
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0x14bb => { Name => 'CropTop', Format => 'unsigned' },
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0x14cc => { Name => 'CropLeft', Format => 'unsigned' },
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0x14dd => { Name => 'CropRight', Format => 'unsigned' },
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0x14b0 => { Name => 'DisplayWidth', Format => 'unsigned' },
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0x14ba => { Name => 'DisplayHeight', Format => 'unsigned' },
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0x14b2 => {
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Name => 'DisplayUnit',
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Format => 'unsigned',
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PrintConv => {
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0 => 'Pixels',
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1 => 'cm',
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2 => 'inches',
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},
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},
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0x14b3 => {
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Name => 'AspectRatioType',
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Format => 'unsigned',
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PrintConv => {
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0 => 'Free Resizing',
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1 => 'Keep Aspect Ratio',
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2 => 'Fixed',
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},
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},
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0xeb524 => { Name => 'ColorSpace', Binary => 1, Unknown => 1 },
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0xfb523 => { Name => 'Gamma', Format => 'float' },
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0x383e3 => { Name => 'FrameRate', Format => 'float' },
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#
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# Audio
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#
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0x61 => {
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Name => 'Audio',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x35 => { Name => 'AudioSampleRate', Format => 'float', Groups => { 2 => 'Audio' } },
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0x38b5 => { Name => 'OutputAudioSampleRate',Format => 'float', Groups => { 2 => 'Audio' } },
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0x1f => { Name => 'AudioChannels', Format => 'unsigned', Groups => { 2 => 'Audio' } },
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0x3d7b => {
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Name => 'ChannelPositions',
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Binary => 1,
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Unknown => 1,
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Groups => { 2 => 'Audio' },
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},
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0x2264 => { Name => 'AudioBitsPerSample', Format => 'unsigned', Groups => { 2 => 'Audio' } },
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#
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# Content Encoding
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#
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0x2d80 => {
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Name => 'ContentEncodings',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x2240 => {
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Name => 'ContentEncoding',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x1031 => { Name => 'ContentEncodingOrder', Format => 'unsigned', Unknown => 1 },
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0x1032 => { Name => 'ContentEncodingScope', Format => 'unsigned', Unknown => 1 },
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0x1033 => {
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Name => 'ContentEncodingType',
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Format => 'unsigned',
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PrintConv => { 0 => 'Compression', 1 => 'Encryption' },
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},
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0x1034 => {
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Name => 'ContentCompression',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x254 => {
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Name => 'ContentCompressionAlgorithm',
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Format => 'unsigned',
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PrintConv => {
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0 => 'zlib',
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1 => 'bzlib',
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2 => 'lzo1x',
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3 => 'Header Stripping',
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},
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},
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0x255 => { Name => 'ContentCompressionSettings',Binary => 1, Unknown => 1 },
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0x1035 => {
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Name => 'ContentEncryption',
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SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
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},
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0x7e1 => {
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Name => 'ContentEncryptionAlgorithm',
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Format => 'unsigned',
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PrintConv => {
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0 => 'Not Encrypted',
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1 => 'DES',
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2 => '3DES',
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3 => 'Twofish',
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4 => 'Blowfish',
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5 => 'AES',
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},
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},
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0x7e2 => { Name => 'ContentEncryptionKeyID',Binary => 1, Unknown => 1 },
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0x7e3 => { Name => 'ContentSignature', Binary => 1, Unknown => 1 },
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0x7e4 => { Name => 'ContentSignatureKeyID', Binary => 1, Unknown => 1 },
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0x7e5 => {
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Name => 'ContentSignatureAlgorithm',
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Format => 'unsigned',
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PrintConv => {
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0 => 'Not Signed',
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1 => 'RSA',
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},
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},
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0x7e6 => {
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Name => 'ContentSignatureHashAlgorithm',
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Format => 'unsigned',
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PrintConv => {
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0 => 'Not Signed',
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1 => 'SHA1-160',
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2 => 'MD5',
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},
|
|
},
|
|
#
|
|
# Cues
|
|
#
|
|
0xc53bb6b => {
|
|
Name => 'Cues',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x3b => {
|
|
Name => 'CuePoint',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x33 => {
|
|
Name => 'CueTime',
|
|
Format => 'unsigned',
|
|
Unknown => 1,
|
|
ValueConv => '$$self{TimecodeScale} ? $val * $$self{TimecodeScale} / 1e9 : $val',
|
|
PrintConv => '$$self{TimecodeScale} ? ConvertDuration($val) : $val',
|
|
},
|
|
0x37 => {
|
|
Name => 'CueTrackPositions',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x77 => { Name => 'CueTrack', Format => 'unsigned', Unknown => 1 },
|
|
0x71 => { Name => 'CueClusterPosition',Format => 'unsigned', Unknown => 1 },
|
|
0x1378 => { Name => 'CueBlockNumber', Format => 'unsigned', Unknown => 1 },
|
|
0x6a => { Name => 'CueCodecState', Format => 'unsigned', Unknown => 1 },
|
|
0x5b => {
|
|
Name => 'CueReference',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x16 => {
|
|
Name => 'CueRefTime',
|
|
Format => 'unsigned',
|
|
Unknown => 1,
|
|
ValueConv => '$$self{TimecodeScale} ? $val * $$self{TimecodeScale} / 1e9 : $val',
|
|
PrintConv => '$$self{TimecodeScale} ? ConvertDuration($val) : $val',
|
|
},
|
|
0x17 => { Name => 'CueRefCluster', Format => 'unsigned', Unknown => 1 },
|
|
0x135f=> { Name => 'CueRefNumber', Format => 'unsigned', Unknown => 1 },
|
|
0x6b => { Name => 'CueRefCodecState', Format => 'unsigned', Unknown => 1 },
|
|
#
|
|
# Attachments
|
|
#
|
|
0x941a469 => {
|
|
Name => 'Attachments',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x21a7 => {
|
|
Name => 'AttachedFile',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x67e => { Name => 'AttachedFileDescription',Format => 'utf8' },
|
|
0x66e => { Name => 'AttachedFileName', Format => 'utf8' },
|
|
0x660 => { Name => 'AttachedFileMIMEType', Format => 'string' },
|
|
0x65c => { Name => 'AttachedFileData', Binary => 1 },
|
|
0x6ae => { Name => 'AttachedFileUID', Format => 'unsigned' },
|
|
0x675 => { Name => 'AttachedFileReferral', Binary => 1, Unknown => 1 },
|
|
#
|
|
# Chapters
|
|
#
|
|
0x43a770 => {
|
|
Name => 'Chapters',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x5b9 => {
|
|
Name => 'EditionEntry',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x5bc => { Name => 'EditionUID', Format => 'unsigned', Unknown => 1 },
|
|
0x5bd => { Name => 'EditionFlagHidden', Format => 'unsigned', Unknown => 1 },
|
|
0x5db => { Name => 'EditionFlagDefault',Format => 'unsigned', Unknown => 1 },
|
|
0x5dd => { Name => 'EditionFlagOrdered',Format => 'unsigned', Unknown => 1 },
|
|
0x36 => {
|
|
Name => 'ChapterAtom',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x33c4 => { Name => 'ChapterUID', Format => 'unsigned', Unknown => 1 },
|
|
0x11 => {
|
|
Name => 'ChapterTimeStart',
|
|
Groups => { 1 => 'Chapter#' },
|
|
Format => 'unsigned',
|
|
ValueConv => '$val / 1e9',
|
|
PrintConv => 'ConvertDuration($val)',
|
|
},
|
|
0x12 => {
|
|
Name => 'ChapterTimeEnd',
|
|
Format => 'unsigned',
|
|
ValueConv => '$val / 1e9',
|
|
PrintConv => 'ConvertDuration($val)',
|
|
},
|
|
0x18 => { Name => 'ChapterFlagHidden', Format => 'unsigned', Unknown => 1 },
|
|
0x598 => { Name => 'ChapterFlagEnabled',Format => 'unsigned', Unknown => 1 },
|
|
0x2e67=> { Name => 'ChapterSegmentUID', Binary => 1, Unknown => 1 },
|
|
0x2ebc=> { Name => 'ChapterSegmentEditionUID', Binary => 1, Unknown => 1 },
|
|
0x23c3 => {
|
|
Name => 'ChapterPhysicalEquivalent',
|
|
Format => 'unsigned',
|
|
PrintConv => {
|
|
10 => 'Index',
|
|
20 => 'Track',
|
|
30 => 'Session',
|
|
40 => 'Layer',
|
|
50 => 'Side',
|
|
60 => 'CD / DVD',
|
|
70 => 'Set / Package',
|
|
},
|
|
},
|
|
0x0f => {
|
|
Name => 'ChapterTrack',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x09 => { Name => 'ChapterTrackNumber', Format => 'unsigned', Unknown => 1 },
|
|
0x00 => {
|
|
Name => 'ChapterDisplay',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x05 => { Name => 'ChapterString', Format => 'utf8' },
|
|
0x37c => { Name => 'ChapterLanguage', Format => 'string' },
|
|
0x37e => { Name => 'ChapterCountry', Format => 'string' },
|
|
0x2944 => {
|
|
Name => 'ChapterProcess',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x2955 => {
|
|
Name => 'ChapterProcessCodecID',
|
|
Format => 'unsigned',
|
|
Unknown => 1,
|
|
PrintConv => { 0 => 'Matroska', 1 => 'DVD' },
|
|
},
|
|
0x50d => { Name => 'ChapterProcessPrivate', Binary => 1, Unknown => 1 },
|
|
0x2911 => {
|
|
Name => 'ChapterProcessCommand',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x2922 => {
|
|
Name => 'ChapterProcessTime',
|
|
Format => 'unsigned',
|
|
Unknown => 1,
|
|
PrintConv => {
|
|
0 => 'For Duration of Chapter',
|
|
1 => 'Before Chapter',
|
|
2 => 'After Chapter',
|
|
},
|
|
},
|
|
0x2933 => { Name => 'ChapterProcessData', Binary => 1, Unknown => 1 },
|
|
#
|
|
# Tags
|
|
#
|
|
0x254c367 => {
|
|
Name => 'Tags',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x3373 => {
|
|
Name => 'Tag',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x23c0 => {
|
|
Name => 'Targets',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x28ca => { Name => 'TargetTypeValue', Format => 'unsigned' },
|
|
0x23ca => { Name => 'TargetType', Format => 'string' },
|
|
0x23c5 => { Name => 'TagTrackUID', Format => 'unsigned', Unknown => 1 },
|
|
0x23c9 => { Name => 'TagEditionUID', Format => 'unsigned', Unknown => 1 },
|
|
0x23c4 => { Name => 'TagChapterUID', Format => 'unsigned', Unknown => 1 },
|
|
0x23c6 => { Name => 'TagAttachmentUID', Format => 'unsigned', Unknown => 1 },
|
|
0x27c8 => {
|
|
Name => 'SimpleTag',
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Matroska::Main' },
|
|
},
|
|
0x5a3 => { Name => 'TagName', Format => 'utf8' },
|
|
0x47a => { Name => 'TagLanguage', Format => 'string' },
|
|
0x484 => { Name => 'TagDefault', Format => 'unsigned', PrintConv => \%noYes },
|
|
0x487 => { Name => 'TagString', Format => 'utf8' },
|
|
0x485 => { Name => 'TagBinary', Binary => 1 },
|
|
);
|
|
|
|
#------------------------------------------------------------------------------
|
|
# Get variable-length Matroska integer
|
|
# Inputs: 0) data buffer, 1) position in data
|
|
# Returns: integer value and updates position, -1 for unknown/reserved value,
|
|
# or undef if no data left
|
|
sub GetVInt($$)
|
|
{
|
|
return undef if $_[1] >= length $_[0];
|
|
my $val = ord(substr($_[0], $_[1]++));
|
|
my $num = 0;
|
|
unless ($val) {
|
|
return undef if $_[1] >= length $_[0];
|
|
$val = ord(substr($_[0], $_[1]++));
|
|
return undef unless $val; # can't be this large!
|
|
$num += 7; # 7 more bytes to read (we just read one)
|
|
}
|
|
my $mask = 0x7f;
|
|
while ($val == ($val & $mask)) {
|
|
$mask >>= 1;
|
|
++$num;
|
|
}
|
|
$val = ($val & $mask);
|
|
my $unknown = ($val == $mask);
|
|
return undef if $_[1] + $num > length $_[0];
|
|
while ($num) {
|
|
my $b = ord(substr($_[0], $_[1]++));
|
|
$unknown = 0 if $b != 0xff;
|
|
$val = $val * 256 + $b;
|
|
--$num;
|
|
}
|
|
return $unknown ? -1 : $val;
|
|
}
|
|
|
|
#------------------------------------------------------------------------------
|
|
# Read information from a Matroska multimedia file (MKV, MKA, MKS)
|
|
# Inputs: 0) ExifTool object reference, 1) Directory information reference
|
|
# Returns: 1 on success, 0 if this wasn't a valid Matroska file
|
|
sub ProcessMKV($$)
|
|
{
|
|
my ($et, $dirInfo) = @_;
|
|
my $raf = $$dirInfo{RAF};
|
|
my ($buff, $buf2, @dirEnd, $trackIndent, %trackTypes);
|
|
|
|
$raf->Read($buff, 4) == 4 or return 0;
|
|
return 0 unless $buff =~ /^\x1a\x45\xdf\xa3/;
|
|
|
|
# read in 64kB blocks (already read 4 bytes)
|
|
$raf->Read($buff, 65532) or return 0;
|
|
my $dataLen = length $buff;
|
|
my ($pos, $dataPos) = (0, 4);
|
|
|
|
# verify header length
|
|
my $hlen = GetVInt($buff, $pos);
|
|
return 0 unless $hlen and $hlen > 0;
|
|
$pos + $hlen > $dataLen and $et->Warn('Truncated Matroska header'), return 1;
|
|
$et->SetFileType();
|
|
SetByteOrder('MM');
|
|
my $tagTablePtr = GetTagTable('Image::ExifTool::Matroska::Main');
|
|
|
|
# set flag to process entire file (otherwise we stop at the first Cluster)
|
|
my $verbose = $et->Options('Verbose');
|
|
my $processAll = ($verbose or $et->Options('Unknown') > 1);
|
|
$$et{TrackTypes} = \%trackTypes; # store Track types reference
|
|
my $oldIndent = $$et{INDENT};
|
|
my $chapterNum = 0;
|
|
|
|
# loop over all Matroska elements
|
|
for (;;) {
|
|
while (@dirEnd and $pos + $dataPos >= $dirEnd[-1][0]) {
|
|
pop @dirEnd;
|
|
# use INDENT to decide whether or not we are done this Track element
|
|
delete $$et{SET_GROUP1} if $trackIndent and $trackIndent eq $$et{INDENT};
|
|
$$et{INDENT} = substr($$et{INDENT}, 0, -2);
|
|
}
|
|
# read more if we are getting close to the end of our buffer
|
|
# (24 more bytes should be enough to read this element header)
|
|
if ($pos + 24 > $dataLen and $raf->Read($buf2, 65536)) {
|
|
$buff = substr($buff, $pos) . $buf2;
|
|
undef $buf2;
|
|
$dataPos += $pos;
|
|
$dataLen = length $buff;
|
|
$pos = 0;
|
|
}
|
|
my $tag = GetVInt($buff, $pos);
|
|
last unless defined $tag and $tag >= 0;
|
|
my $size = GetVInt($buff, $pos);
|
|
last unless defined $size;
|
|
my $unknownSize;
|
|
$size < 0 and $unknownSize = 1, $size = 1e20;
|
|
if (@dirEnd and $pos + $dataPos + $size > $dirEnd[-1][0]) {
|
|
$et->Warn("Invalid or corrupted $dirEnd[-1][1] master element");
|
|
$pos = $dirEnd[-1][0] - $dataPos;
|
|
if ($pos < 0 or $pos > $dataLen) {
|
|
$buff = '';
|
|
$dataPos += $pos;
|
|
$dataLen = 0;
|
|
$pos = 0;
|
|
$raf->Seek($dataPos, 0) or last;
|
|
}
|
|
next;
|
|
}
|
|
my $tagInfo = $et->GetTagInfo($tagTablePtr, $tag);
|
|
# just fall through into the contained EBML elements
|
|
if ($tagInfo and $$tagInfo{SubDirectory}) {
|
|
# stop processing at first cluster unless we are in verbose mode
|
|
last if $$tagInfo{Name} eq 'Cluster' and not $processAll;
|
|
$$et{INDENT} .= '| ';
|
|
$et->VerboseDir($$tagTablePtr{$tag}{Name}, undef, $size);
|
|
push @dirEnd, [ $pos + $dataPos + $size, $$tagInfo{Name} ];
|
|
if ($$tagInfo{Name} eq 'ChapterAtom') {
|
|
$$et{SET_GROUP1} = 'Chapter' . (++$chapterNum);
|
|
$trackIndent = $$et{INDENT};
|
|
}
|
|
next;
|
|
}
|
|
last if $unknownSize;
|
|
if ($pos + $size > $dataLen) {
|
|
# how much more do we need to read?
|
|
my $more = $pos + $size - $dataLen;
|
|
# just skip unknown and large data blocks
|
|
if (not $tagInfo or $more > 10000000) {
|
|
# don't try to skip very large blocks unless LargeFileSupport is enabled
|
|
last if $more > 0x80000000 and not $et->Options('LargeFileSupport');
|
|
$raf->Seek($more, 1) or last;
|
|
$buff = '';
|
|
$dataPos += $dataLen + $more;
|
|
$dataLen = 0;
|
|
$pos = 0;
|
|
next;
|
|
} else {
|
|
# read data in multiples of 64kB
|
|
$more = (int($more / 65536) + 1) * 65536;
|
|
if ($raf->Read($buf2, $more)) {
|
|
$buff = substr($buff, $pos) . $buf2;
|
|
undef $buf2;
|
|
$dataPos += $pos;
|
|
$dataLen = length $buff;
|
|
$pos = 0;
|
|
}
|
|
last if $pos + $size > $dataLen;
|
|
}
|
|
}
|
|
unless ($tagInfo) {
|
|
# ignore the element
|
|
$pos += $size;
|
|
next;
|
|
}
|
|
my $val;
|
|
if ($$tagInfo{Format}) {
|
|
my $fmt = $$tagInfo{Format};
|
|
if ($fmt eq 'string' or $fmt eq 'utf8') {
|
|
($val = substr($buff, $pos, $size)) =~ s/\0.*//s;
|
|
$val = $et->Decode($val, 'UTF8') if $fmt eq 'utf8';
|
|
} elsif ($fmt eq 'float') {
|
|
if ($size == 4) {
|
|
$val = GetFloat(\$buff, $pos);
|
|
} elsif ($size == 8) {
|
|
$val = GetDouble(\$buff, $pos);
|
|
} else {
|
|
$et->Warn("Illegal float size ($size)");
|
|
}
|
|
} else {
|
|
my @vals = unpack("x${pos}C$size", $buff);
|
|
$val = 0;
|
|
if ($fmt eq 'signed' or $fmt eq 'date') {
|
|
my $over = 1;
|
|
foreach (@vals) {
|
|
$val = $val * 256 + $_;
|
|
$over *= 256;
|
|
}
|
|
# interpret negative numbers
|
|
$val -= $over if $vals[0] & 0x80;
|
|
# convert dates (nanoseconds since 2001:01:01)
|
|
if ($fmt eq 'date') {
|
|
my $t = $val / 1e9;
|
|
my $f = $t - int($t); # fractional seconds
|
|
$f =~ s/^\d+//; # remove leading zero
|
|
# (8 leap days between 1970 and 2001)
|
|
$t += (((2001-1970)*365+8)*24*3600);
|
|
$val = Image::ExifTool::ConvertUnixTime($t) . $f . 'Z';
|
|
}
|
|
} else { # must be unsigned
|
|
$val = $val * 256 + $_ foreach @vals;
|
|
}
|
|
}
|
|
# set group1 to Track/Chapter number
|
|
if ($$tagInfo{Name} eq 'TrackNumber') {
|
|
$$et{SET_GROUP1} = 'Track' . $val;
|
|
$trackIndent = $$et{INDENT};
|
|
}
|
|
}
|
|
my %parms = (
|
|
DataPt => \$buff,
|
|
DataPos => $dataPos,
|
|
Start => $pos,
|
|
Size => $size,
|
|
);
|
|
if ($$tagInfo{NoSave}) {
|
|
$et->VerboseInfo($tag, $tagInfo, Value => $val, %parms) if $verbose;
|
|
} else {
|
|
$et->HandleTag($tagTablePtr, $tag, $val, %parms);
|
|
}
|
|
$pos += $size; # step to next element
|
|
}
|
|
$$et{INDENT} = $oldIndent;
|
|
delete $$et{SET_GROUP1};
|
|
# override file type if necessary based on existing track types
|
|
unless ($trackTypes{0x01} or $trackTypes{0x03}) { # video or complex?
|
|
if ($trackTypes{0x02}) { # audio?
|
|
$et->OverrideFileType('MKA');
|
|
} elsif ($trackTypes{0x11}) { # subtitle?
|
|
$et->OverrideFileType('MKS');
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
1; # end
|
|
|
|
__END__
|
|
|
|
=head1 NAME
|
|
|
|
Image::ExifTool::Matroska - Read meta information from Matroska files
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
This module is used by Image::ExifTool
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
This module contains definitions required by Image::ExifTool to read meta
|
|
information from Matroska multimedia files (MKA, MKV, MKS and WEBM).
|
|
|
|
=head1 AUTHOR
|
|
|
|
Copyright 2003-2016, Phil Harvey (phil at owl.phy.queensu.ca)
|
|
|
|
This library is free software; you can redistribute it and/or modify it
|
|
under the same terms as Perl itself.
|
|
|
|
=head1 REFERENCES
|
|
|
|
=over 4
|
|
|
|
=item L<http://www.matroska.org/technical/specs/index.html>
|
|
|
|
=back
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<Image::ExifTool::TagNames/Matroska Tags>,
|
|
L<Image::ExifTool(3pm)|Image::ExifTool>
|
|
|
|
=cut
|
|
|