886 lines
30 KiB
Perl
886 lines
30 KiB
Perl
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#------------------------------------------------------------------------------
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# File: ASF.pm
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#
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# Description: Read ASF/WMA/WMV meta information
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#
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# Revisions: 12/23/2005 - P. Harvey Created
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#
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# References: 1) http://www.microsoft.com/windows/windowsmedia/format/asfspec.aspx
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# 2) http://www.adobe.com/devnet/xmp/pdfs/XMPSpecificationPart3.pdf (Oct 2008)
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#------------------------------------------------------------------------------
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package Image::ExifTool::ASF;
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use strict;
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use vars qw($VERSION);
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use Image::ExifTool qw(:DataAccess :Utils);
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use Image::ExifTool::Exif;
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use Image::ExifTool::RIFF;
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$VERSION = '1.23';
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sub ProcessASF($$;$);
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sub ProcessContentDescription($$$);
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sub ProcessExtendedContentDescription($$$);
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sub ProcessMetadata($$$);
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sub ProcessPicture($$$);
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sub ProcessCodecList($$$);
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# GUID definitions
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my %errorCorrection = (
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'20FB5700-5B55-11CF-A8FD-00805F5C442B' => 'No Error Correction',
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'BFC3CD50-618F-11CF-8BB2-00AA00B4E220' => 'Audio Spread',
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);
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my %streamType = (
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'F8699E40-5B4D-11CF-A8FD-00805F5C442B' => 'Audio',
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'BC19EFC0-5B4D-11CF-A8FD-00805F5C442B' => 'Video',
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'59DACFC0-59E6-11D0-A3AC-00A0C90348F6' => 'Command',
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'B61BE100-5B4E-11CF-A8FD-00805F5C442B' => 'JFIF',
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'35907DE0-E415-11CF-A917-00805F5C442B' => 'Degradable JPEG',
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'91BD222C-F21C-497A-8B6D-5AA86BFC0185' => 'File Transfer',
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'3AFB65E2-47EF-40F2-AC2C-70A90D71D343' => 'Binary',
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);
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my %mutex = (
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'D6E22A00-35DA-11D1-9034-00A0C90349BE' => 'MutexLanguage',
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'D6E22A01-35DA-11D1-9034-00A0C90349BE' => 'MutexBitrate',
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'D6E22A02-35DA-11D1-9034-00A0C90349BE' => 'MutexUnknown',
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);
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my %bandwidthSharing = (
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'AF6060AA-5197-11D2-B6AF-00C04FD908E9' => 'SharingExclusive',
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'AF6060AB-5197-11D2-B6AF-00C04FD908E9' => 'SharingPartial',
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);
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my %typeSpecific = (
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'776257D4-C627-41CB-8F81-7AC7FF1C40CC' => 'WebStreamMediaSubtype',
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'DA1E6B13-8359-4050-B398-388E965BF00C' => 'WebStreamFormat',
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);
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my %advancedContentEncryption = (
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'7A079BB6-DAA4-4e12-A5CA-91D38DC11A8D' => 'DRMNetworkDevices',
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);
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# ASF top level objects
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%Image::ExifTool::ASF::Main = (
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PROCESS_PROC => \&ProcessASF,
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NOTES => q{
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The ASF format is used by Windows WMA and WMV files, and DIVX videos. Tag
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ID's aren't listed because they are huge 128-bit GUID's that would ruin the
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formatting of this table.
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},
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'75B22630-668E-11CF-A6D9-00AA0062CE6C' => {
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Name => 'Header',
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SubDirectory => { TagTable => 'Image::ExifTool::ASF::Header', Size => 6 },
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},
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'75B22636-668E-11CF-A6D9-00AA0062CE6C' => 'Data',
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'33000890-E5B1-11CF-89F4-00A0C90349CB' => 'SimpleIndex',
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'D6E229D3-35DA-11D1-9034-00A0C90349BE' => 'Index',
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'FEB103F8-12AD-4C64-840F-2A1D2F7AD48C' => 'MediaIndex',
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'3CB73FD0-0C4A-4803-953D-EDF7B6228F0C' => 'TimecodeIndex',
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'BE7ACFCB-97A9-42E8-9C71-999491E3AFAC' => { #2
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Name => 'XMP',
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SubDirectory => { TagTable => 'Image::ExifTool::XMP::Main' },
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},
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);
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# ASF header objects
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%Image::ExifTool::ASF::Header = (
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PROCESS_PROC => \&ProcessASF,
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'8CABDCA1-A947-11CF-8EE4-00C00C205365' => {
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Name => 'FileProperties',
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SubDirectory => { TagTable => 'Image::ExifTool::ASF::FileProperties' },
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},
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'B7DC0791-A9B7-11CF-8EE6-00C00C205365' => {
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Name => 'StreamProperties',
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SubDirectory => { TagTable => 'Image::ExifTool::ASF::StreamProperties' },
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},
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'5FBF03B5-A92E-11CF-8EE3-00C00C205365' => {
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Name => 'HeaderExtension',
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SubDirectory => { TagTable => 'Image::ExifTool::ASF::HeaderExtension', Size => 22 },
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},
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'86D15240-311D-11D0-A3A4-00A0C90348F6' => {
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Name => 'CodecList',
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SubDirectory => { TagTable => 'Image::ExifTool::ASF::CodecList' },
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},
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'1EFB1A30-0B62-11D0-A39B-00A0C90348F6' => 'ScriptCommand',
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'F487CD01-A951-11CF-8EE6-00C00C205365' => 'Marker',
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'D6E229DC-35DA-11D1-9034-00A0C90349BE' => 'BitrateMutualExclusion',
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'75B22635-668E-11CF-A6D9-00AA0062CE6C' => 'ErrorCorrection',
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'75B22633-668E-11CF-A6D9-00AA0062CE6C' => {
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Name => 'ContentDescription',
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SubDirectory => { TagTable => 'Image::ExifTool::ASF::ContentDescr' },
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},
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'2211B3FA-BD23-11D2-B4B7-00A0C955FC6E' => {
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Name => 'ContentBranding',
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SubDirectory => { TagTable => 'Image::ExifTool::ASF::ContentBranding' },
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},
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'D2D0A440-E307-11D2-97F0-00A0C95EA850' => {
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Name => 'ExtendedContentDescr',
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SubDirectory => { TagTable => 'Image::ExifTool::ASF::ExtendedDescr' },
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},
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'7BF875CE-468D-11D1-8D82-006097C9A2B2' => 'StreamBitrateProps',
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'2211B3FB-BD23-11D2-B4B7-00A0C955FC6E' => 'ContentEncryption',
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'298AE614-2622-4C17-B935-DAE07EE9289C' => 'ExtendedContentEncryption',
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'2211B3FC-BD23-11D2-B4B7-00A0C955FC6E' => 'DigitalSignature',
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'1806D474-CADF-4509-A4BA-9AABCB96AAE8' => 'Padding',
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);
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%Image::ExifTool::ASF::ContentDescr = (
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PROCESS_PROC => \&ProcessContentDescription,
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GROUPS => { 2 => 'Video' },
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0 => 'Title',
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1 => { Name => 'Author', Groups => { 2 => 'Author' } },
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2 => { Name => 'Copyright', Groups => { 2 => 'Author' } },
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3 => 'Description',
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4 => 'Rating',
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);
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%Image::ExifTool::ASF::ContentBranding = (
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PROCESS_PROC => \&ProcessContentBranding,
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GROUPS => { 2 => 'Author' },
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0 => {
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Name => 'BannerImageType',
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PrintConv => {
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0 => 'None',
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1 => 'Bitmap',
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2 => 'JPEG',
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3 => 'GIF',
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},
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},
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1 => { Name => 'BannerImage', Groups => { 2 => 'Preview' }, Binary => 1 },
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2 => 'BannerImageURL',
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3 => 'CopyrightURL',
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);
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%Image::ExifTool::ASF::ExtendedDescr = (
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PROCESS_PROC => \&ProcessExtendedContentDescription,
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GROUPS => { 2 => 'Video' },
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ASFLeakyBucketPairs => { Binary => 1 },
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AspectRatioX => {},
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AspectRatioY => {},
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Author => { Groups => { 2 => 'Author' } },
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AverageLevel => {},
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BannerImageData => {},
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BannerImageType => {},
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BannerImageURL => {},
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Bitrate => { PrintConv => 'ConvertBitrate($val)' },
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Broadcast => {},
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BufferAverage => {},
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Can_Skip_Backward => {},
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Can_Skip_Forward => {},
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Copyright => { Groups => { 2 => 'Author' } },
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CopyrightURL => { Groups => { 2 => 'Author' } },
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CurrentBitrate => { PrintConv => 'ConvertBitrate($val)' },
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Description => {},
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DRM_ContentID => {},
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DRM_DRMHeader_ContentDistributor => {},
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DRM_DRMHeader_ContentID => {},
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DRM_DRMHeader_IndividualizedVersion => {},
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DRM_DRMHeader_KeyID => {},
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DRM_DRMHeader_LicenseAcqURL => {},
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DRM_DRMHeader_SubscriptionContentID => {},
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DRM_DRMHeader => {},
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DRM_IndividualizedVersion => {},
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DRM_KeyID => {},
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DRM_LASignatureCert => {},
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DRM_LASignatureLicSrvCert => {},
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DRM_LASignaturePrivKey => {},
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DRM_LASignatureRootCert => {},
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DRM_LicenseAcqURL => {},
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DRM_V1LicenseAcqURL => {},
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Duration => { PrintConv => 'ConvertDuration($val)' },
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FileSize => {},
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HasArbitraryDataStream => {},
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HasAttachedImages => {},
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HasAudio => {},
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HasFileTransferStream => {},
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HasImage => {},
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HasScript => {},
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HasVideo => {},
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Is_Protected => {},
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Is_Trusted => {},
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IsVBR => {},
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NSC_Address => {},
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NSC_Description => {},
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NSC_Email => {},
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NSC_Name => {},
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NSC_Phone => {},
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NumberOfFrames => {},
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OptimalBitrate => { PrintConv => 'ConvertBitrate($val)' },
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PeakValue => {},
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Rating => {},
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Seekable => {},
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Signature_Name => {},
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Stridable => {},
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Title => {},
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VBRPeak => {},
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# "WM/" tags...
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AlbumArtist => {},
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AlbumCoverURL => {},
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AlbumTitle => {},
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ASFPacketCount => {},
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ASFSecurityObjectsSize => {},
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AudioFileURL => {},
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AudioSourceURL => {},
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AuthorURL => { Groups => { 2 => 'Author' } },
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BeatsPerMinute => {},
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Category => {},
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Codec => {},
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Composer => {},
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Conductor => {},
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ContainerFormat => {},
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ContentDistributor => {},
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ContentGroupDescription => {},
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Director => {},
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DRM => {},
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DVDID => {},
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EncodedBy => {},
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EncodingSettings => {},
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EncodingTime => { Groups => { 2 => 'Time' } },
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Genre => {},
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GenreID => {},
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InitialKey => {},
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ISRC => {},
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Language => {},
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Lyrics => {},
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Lyrics_Synchronised => {},
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MCDI => {},
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MediaClassPrimaryID => { ValueConv => 'Image::ExifTool::ASF::GetGUID($val)' },
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MediaClassSecondaryID => { ValueConv => 'Image::ExifTool::ASF::GetGUID($val)' },
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MediaCredits => {},
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MediaIsDelay => {},
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MediaIsFinale => {},
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MediaIsLive => {},
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MediaIsPremiere => {},
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MediaIsRepeat => {},
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MediaIsSAP => {},
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MediaIsStereo => {},
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MediaIsSubtitled => {},
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MediaIsTape => {},
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MediaNetworkAffiliation => {},
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MediaOriginalBroadcastDateTime => { Groups => { 2 => 'Time' } },
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MediaOriginalChannel => {},
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MediaStationCallSign => {},
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MediaStationName => {},
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ModifiedBy => {},
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Mood => {},
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OriginalAlbumTitle => {},
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OriginalArtist => {},
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OriginalFilename => 'OriginalFileName',
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OriginalLyricist => {},
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OriginalReleaseTime => { Groups => { 2 => 'Time' } },
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OriginalReleaseYear => { Groups => { 2 => 'Time' } },
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ParentalRating => {},
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ParentalRatingReason => {},
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PartOfSet => {},
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PeakBitrate => { PrintConv => 'ConvertBitrate($val)' },
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Period => {},
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Picture => {
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SubDirectory => {
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TagTable => 'Image::ExifTool::ASF::Picture',
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},
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},
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PlaylistDelay => {},
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Producer => {},
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PromotionURL => {},
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ProtectionType => {},
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Provider => {},
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ProviderCopyright => {},
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ProviderRating => {},
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ProviderStyle => {},
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Publisher => {},
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RadioStationName => {},
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RadioStationOwner => {},
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SharedUserRating => {},
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StreamTypeInfo => {},
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SubscriptionContentID => {},
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SubTitle => 'Subtitle',
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SubTitleDescription => 'SubtitleDescription',
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Text => {},
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ToolName => {},
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ToolVersion => {},
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Track => {},
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TrackNumber => {},
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UniqueFileIdentifier => {},
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UserWebURL => {},
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VideoClosedCaptioning => {},
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VideoFrameRate => {},
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VideoHeight => {},
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VideoWidth => {},
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WMADRCAverageReference => {},
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WMADRCAverageTarget => {},
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WMADRCPeakReference => {},
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WMADRCPeakTarget => {},
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WMCollectionGroupID => {},
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WMCollectionID => {},
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WMContentID => {},
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Writer => { Groups => { 2 => 'Author' } },
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Year => { Groups => { 2 => 'Time' } },
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);
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%Image::ExifTool::ASF::Picture = (
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PROCESS_PROC => \&ProcessPicture,
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GROUPS => { 2 => 'Image' },
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0 => {
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Name => 'PictureType',
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PrintConv => { # (Note: Duplicated in ID3, ASF and FLAC modules!)
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0 => 'Other',
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1 => '32x32 PNG Icon',
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2 => 'Other Icon',
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3 => 'Front Cover',
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4 => 'Back Cover',
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5 => 'Leaflet',
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6 => 'Media',
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7 => 'Lead Artist',
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8 => 'Artist',
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9 => 'Conductor',
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10 => 'Band',
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11 => 'Composer',
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12 => 'Lyricist',
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13 => 'Recording Studio or Location',
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14 => 'Recording Session',
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15 => 'Performance',
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||
|
|
16 => 'Capture from Movie or Video',
|
||
|
|
17 => 'Bright(ly) Colored Fish',
|
||
|
|
18 => 'Illustration',
|
||
|
|
19 => 'Band Logo',
|
||
|
|
20 => 'Publisher Logo',
|
||
|
|
},
|
||
|
|
},
|
||
|
|
1 => 'PictureMIMEType',
|
||
|
|
2 => 'PictureDescription',
|
||
|
|
3 => {
|
||
|
|
Name => 'Picture',
|
||
|
|
Groups => { 2 => 'Preview' },
|
||
|
|
Binary => 1,
|
||
|
|
},
|
||
|
|
);
|
||
|
|
|
||
|
|
%Image::ExifTool::ASF::FileProperties = (
|
||
|
|
PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
|
||
|
|
GROUPS => { 2 => 'Video' },
|
||
|
|
0 => {
|
||
|
|
Name => 'FileID',
|
||
|
|
Format => 'binary[16]',
|
||
|
|
ValueConv => 'Image::ExifTool::ASF::GetGUID($val)',
|
||
|
|
},
|
||
|
|
16 => { Name => 'FileLength', Format => 'int64u' },
|
||
|
|
24 => {
|
||
|
|
Name => 'CreationDate',
|
||
|
|
Format => 'int64u',
|
||
|
|
Groups => { 2 => 'Time' },
|
||
|
|
# time is in 100 ns intervals since 0:00 UTC Jan 1, 1601
|
||
|
|
ValueConv => q{ # (89 leap years between 1601 and 1970)
|
||
|
|
my $t = $val / 1e7 - (((1970-1601)*365+89)*24*3600);
|
||
|
|
return Image::ExifTool::ConvertUnixTime($t) . 'Z';
|
||
|
|
},
|
||
|
|
PrintConv => '$self->ConvertDateTime($val)',
|
||
|
|
},
|
||
|
|
32 => { Name => 'DataPackets', Format => 'int64u' },
|
||
|
|
40 => {
|
||
|
|
Name => 'PlayDuration',
|
||
|
|
Format => 'int64u',
|
||
|
|
ValueConv => '$val / 1e7',
|
||
|
|
PrintConv => 'ConvertDuration($val)',
|
||
|
|
},
|
||
|
|
48 => {
|
||
|
|
Name => 'SendDuration',
|
||
|
|
Format => 'int64u',
|
||
|
|
ValueConv => '$val / 1e7',
|
||
|
|
PrintConv => 'ConvertDuration($val)',
|
||
|
|
},
|
||
|
|
56 => { Name => 'Preroll', Format => 'int64u' },
|
||
|
|
64 => { Name => 'Flags', Format => 'int32u' },
|
||
|
|
68 => { Name => 'MinPacketSize',Format => 'int32u' },
|
||
|
|
72 => { Name => 'MaxPacketSize',Format => 'int32u' },
|
||
|
|
76 => { Name => 'MaxBitrate', Format => 'int32u', PrintConv => 'ConvertBitrate($val)' },
|
||
|
|
);
|
||
|
|
|
||
|
|
%Image::ExifTool::ASF::StreamProperties = (
|
||
|
|
PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
|
||
|
|
GROUPS => { 2 => 'Video' },
|
||
|
|
NOTES => 'Tags with index 54 and greater are conditional based on the StreamType.',
|
||
|
|
0 => {
|
||
|
|
Name => 'StreamType',
|
||
|
|
Format => 'binary[16]',
|
||
|
|
RawConv => sub { # set ASF_STREAM_TYPE for use in conditional tags
|
||
|
|
my ($val, $et) = @_;
|
||
|
|
$$et{ASF_STREAM_TYPE} = $streamType{GetGUID($val)} || '';
|
||
|
|
return $val;
|
||
|
|
},
|
||
|
|
ValueConv => 'Image::ExifTool::ASF::GetGUID($val)',
|
||
|
|
PrintConv => \%streamType,
|
||
|
|
},
|
||
|
|
16 => {
|
||
|
|
Name => 'ErrorCorrectionType',
|
||
|
|
Format => 'binary[16]',
|
||
|
|
ValueConv => 'Image::ExifTool::ASF::GetGUID($val)',
|
||
|
|
PrintConv => \%errorCorrection,
|
||
|
|
},
|
||
|
|
32 => {
|
||
|
|
Name => 'TimeOffset',
|
||
|
|
Format => 'int64u',
|
||
|
|
ValueConv => '$val / 1e7',
|
||
|
|
PrintConv => '"$val s"',
|
||
|
|
},
|
||
|
|
48 => {
|
||
|
|
Name => 'StreamNumber',
|
||
|
|
Format => 'int16u',
|
||
|
|
PrintConv => '($val & 0x7f) . ($val & 0x8000 ? " (encrypted)" : "")',
|
||
|
|
},
|
||
|
|
54 => [
|
||
|
|
{
|
||
|
|
Condition => '$self->{ASF_STREAM_TYPE} eq "Audio"',
|
||
|
|
Name => 'AudioCodecID',
|
||
|
|
Format => 'int16u',
|
||
|
|
PrintHex => 1,
|
||
|
|
SeparateTable => 'RIFF AudioEncoding',
|
||
|
|
PrintConv => \%Image::ExifTool::RIFF::audioEncoding,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Condition => '$self->{ASF_STREAM_TYPE} =~ /^(Video|JFIF|Degradable JPEG)$/',
|
||
|
|
Name => 'ImageWidth',
|
||
|
|
Format => 'int32u',
|
||
|
|
},
|
||
|
|
],
|
||
|
|
56 => {
|
||
|
|
Condition => '$self->{ASF_STREAM_TYPE} eq "Audio"',
|
||
|
|
Name => 'AudioChannels',
|
||
|
|
Format => 'int16u',
|
||
|
|
},
|
||
|
|
58 => [
|
||
|
|
{
|
||
|
|
Condition => '$self->{ASF_STREAM_TYPE} eq "Audio"',
|
||
|
|
Name => 'AudioSampleRate',
|
||
|
|
Format => 'int32u',
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Condition => '$self->{ASF_STREAM_TYPE} =~ /^(Video|JFIF|Degradable JPEG)$/',
|
||
|
|
Name => 'ImageHeight',
|
||
|
|
Format => 'int32u',
|
||
|
|
},
|
||
|
|
],
|
||
|
|
);
|
||
|
|
|
||
|
|
%Image::ExifTool::ASF::HeaderExtension = (
|
||
|
|
PROCESS_PROC => \&ProcessASF,
|
||
|
|
'14E6A5CB-C672-4332-8399-A96952065B5A' => 'ExtendedStreamProps',
|
||
|
|
'A08649CF-4775-4670-8A16-6E35357566CD' => 'AdvancedMutualExcl',
|
||
|
|
'D1465A40-5A79-4338-B71B-E36B8FD6C249' => 'GroupMutualExclusion',
|
||
|
|
'D4FED15B-88D3-454F-81F0-ED5C45999E24' => 'StreamPrioritization',
|
||
|
|
'A69609E6-517B-11D2-B6AF-00C04FD908E9' => 'BandwidthSharing',
|
||
|
|
'7C4346A9-EFE0-4BFC-B229-393EDE415C85' => 'LanguageList',
|
||
|
|
'C5F8CBEA-5BAF-4877-8467-AA8C44FA4CCA' => {
|
||
|
|
Name => 'Metadata',
|
||
|
|
SubDirectory => {
|
||
|
|
# have seen some tags same as ExtendedDescr, so use this table - PH
|
||
|
|
TagTable => 'Image::ExifTool::ASF::ExtendedDescr',
|
||
|
|
ProcessProc => \&ProcessMetadata,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
'44231C94-9498-49D1-A141-1D134E457054' => {
|
||
|
|
Name => 'MetadataLibrary',
|
||
|
|
SubDirectory => {
|
||
|
|
# have seen some tags same as ExtendedDescr, so use this table - PH
|
||
|
|
TagTable => 'Image::ExifTool::ASF::ExtendedDescr',
|
||
|
|
ProcessProc => \&ProcessMetadata,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
'D6E229DF-35DA-11D1-9034-00A0C90349BE' => 'IndexParameters',
|
||
|
|
'6B203BAD-3F11-48E4-ACA8-D7613DE2CFA7' => 'TimecodeIndexParms',
|
||
|
|
'75B22630-668E-11CF-A6D9-00AA0062CE6C' => 'Compatibility',
|
||
|
|
'43058533-6981-49E6-9B74-AD12CB86D58C' => 'AdvancedContentEncryption',
|
||
|
|
'ABD3D211-A9BA-11cf-8EE6-00C00C205365' => 'Reserved1',
|
||
|
|
);
|
||
|
|
|
||
|
|
%Image::ExifTool::ASF::CodecList = (
|
||
|
|
PROCESS_PROC => \&ProcessCodecList,
|
||
|
|
VideoCodecName => {},
|
||
|
|
VideoCodecDescription => {},
|
||
|
|
AudioCodecName => {},
|
||
|
|
AudioCodecDescription => {},
|
||
|
|
OtherCodecName => {},
|
||
|
|
OtherCodecDescription => {},
|
||
|
|
);
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Generate GUID from 16 bytes of binary data
|
||
|
|
# Inputs: 0) data
|
||
|
|
# Returns: GUID
|
||
|
|
sub GetGUID($)
|
||
|
|
{
|
||
|
|
# must do some byte swapping
|
||
|
|
my $val = shift;
|
||
|
|
return $val unless length($val) == 16;
|
||
|
|
my $buff = unpack('H*',pack('NnnNN',unpack('VvvNN',$val)));
|
||
|
|
$buff =~ s/(.{8})(.{4})(.{4})(.{4})/$1-$2-$3-$4-/;
|
||
|
|
return uc($buff);
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Process ASF content description
|
||
|
|
# Inputs: 0) ExifTool object reference, 1) dirInfo ref, 2) tag table reference
|
||
|
|
# Returns: 1 on success
|
||
|
|
sub ProcessContentDescription($$$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo, $tagTablePtr) = @_;
|
||
|
|
my $dataPt = $$dirInfo{DataPt};
|
||
|
|
my $dirLen = $$dirInfo{DirLen};
|
||
|
|
return 0 if $dirLen < 10;
|
||
|
|
my @len = unpack('v5', $$dataPt);
|
||
|
|
my $pos = 10;
|
||
|
|
my $tag;
|
||
|
|
foreach $tag (0..4) {
|
||
|
|
my $len = shift @len;
|
||
|
|
next unless $len;
|
||
|
|
return 0 if $pos + $len > $dirLen;
|
||
|
|
my $val = $et->Decode(substr($$dataPt,$pos,$len),'UCS2','II');
|
||
|
|
$et->HandleTag($tagTablePtr, $tag, $val);
|
||
|
|
$pos += $len;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Process ASF content branding
|
||
|
|
# Inputs: 0) ExifTool object reference, 1) dirInfo ref, 2) tag table reference
|
||
|
|
# Returns: 1 on success
|
||
|
|
sub ProcessContentBranding($$$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo, $tagTablePtr) = @_;
|
||
|
|
my $dataPt = $$dirInfo{DataPt};
|
||
|
|
my $dirLen = $$dirInfo{DirLen};
|
||
|
|
return 0 if $dirLen < 40;
|
||
|
|
# decode banner image type
|
||
|
|
$et->HandleTag($tagTablePtr, 0, unpack('V', $$dataPt));
|
||
|
|
# decode banner image, banner URL and copyright URL
|
||
|
|
my $pos = 4;
|
||
|
|
my $tag;
|
||
|
|
foreach $tag (1..3) {
|
||
|
|
return 0 if $pos + 4 > $dirLen;
|
||
|
|
my $size = unpack("x${pos}V", $$dataPt);
|
||
|
|
$pos += 4;
|
||
|
|
next unless $size;
|
||
|
|
return 0 if $pos + $size > $dirLen;
|
||
|
|
my $val = substr($$dataPt, $pos, $size);
|
||
|
|
$et->HandleTag($tagTablePtr, $tag, $val);
|
||
|
|
$pos += $size;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Read ASF value
|
||
|
|
# Inputs: 0) ExifTool object ref, 1) data reference, 2) value offset,
|
||
|
|
# 3) format number, 4) size
|
||
|
|
# Returns: converted value
|
||
|
|
sub ReadASF($$$$$)
|
||
|
|
{
|
||
|
|
my ($et, $dataPt, $pos, $format, $size) = @_;
|
||
|
|
my @vals;
|
||
|
|
if ($format == 0) { # unicode string
|
||
|
|
$vals[0] = $et->Decode(substr($$dataPt,$pos,$size),'UCS2','II');
|
||
|
|
} elsif ($format == 2) { # 4-byte boolean
|
||
|
|
@vals = ReadValue($dataPt, $pos, 'int32u', undef, $size);
|
||
|
|
foreach (@vals) {
|
||
|
|
$_ = $_ ? 'True' : 'False';
|
||
|
|
}
|
||
|
|
} elsif ($format == 3) { # int32u
|
||
|
|
@vals = ReadValue($dataPt, $pos, 'int32u', undef, $size);
|
||
|
|
} elsif ($format == 4) { # int64u
|
||
|
|
@vals = ReadValue($dataPt, $pos, 'int64u', undef, $size);
|
||
|
|
} elsif ($format == 5) { # int16u
|
||
|
|
@vals = ReadValue($dataPt, $pos, 'int16u', undef, $size);
|
||
|
|
} else { # any other format (including 1, byte array): return raw data
|
||
|
|
$vals[0] = substr($$dataPt,$pos,$size);
|
||
|
|
}
|
||
|
|
return join ' ', @vals;
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Process extended content description
|
||
|
|
# Inputs: 0) ExifTool object reference, 1) dirInfo ref, 2) tag table reference
|
||
|
|
# Returns: 1 on success
|
||
|
|
sub ProcessExtendedContentDescription($$$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo, $tagTablePtr) = @_;
|
||
|
|
my $dataPt = $$dirInfo{DataPt};
|
||
|
|
my $dirLen = $$dirInfo{DirLen};
|
||
|
|
return 0 if $dirLen < 2;
|
||
|
|
my $count = Get16u($dataPt, 0);
|
||
|
|
$et->VerboseDir($dirInfo, $count);
|
||
|
|
my $pos = 2;
|
||
|
|
my $i;
|
||
|
|
for ($i=0; $i<$count; ++$i) {
|
||
|
|
return 0 if $pos + 6 > $dirLen;
|
||
|
|
my $nameLen = unpack("x${pos}v", $$dataPt);
|
||
|
|
$pos += 2;
|
||
|
|
return 0 if $pos + $nameLen + 4 > $dirLen;
|
||
|
|
my $tag = Image::ExifTool::Decode(undef,substr($$dataPt,$pos,$nameLen),'UCS2','II','Latin');
|
||
|
|
$tag =~ s/^WM\///; # remove leading "WM/"
|
||
|
|
$pos += $nameLen;
|
||
|
|
my ($dType, $dLen) = unpack("x${pos}v2", $$dataPt);
|
||
|
|
$pos += 4;
|
||
|
|
return 0 if $pos + $dLen > $dirLen;
|
||
|
|
my $val = ReadASF($et,$dataPt,$pos,$dType,$dLen);
|
||
|
|
$et->HandleTag($tagTablePtr, $tag, $val,
|
||
|
|
DataPt => $dataPt,
|
||
|
|
Start => $pos,
|
||
|
|
Size => $dLen,
|
||
|
|
);
|
||
|
|
$pos += $dLen;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Process ASF metadata library (similar to ProcessExtendedContentDescription above)
|
||
|
|
# Inputs: 0) ExifTool object reference, 1) dirInfo ref, 2) tag table reference
|
||
|
|
# Returns: 1 on success
|
||
|
|
sub ProcessMetadata($$$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo, $tagTablePtr) = @_;
|
||
|
|
my $dataPt = $$dirInfo{DataPt};
|
||
|
|
my $dirLen = $$dirInfo{DirLen};
|
||
|
|
return 0 if $dirLen < 2;
|
||
|
|
my $count = Get16u($dataPt, 0);
|
||
|
|
$et->VerboseDir($dirInfo, $count);
|
||
|
|
my $pos = 2;
|
||
|
|
my $i;
|
||
|
|
for ($i=0; $i<$count; ++$i) {
|
||
|
|
return 0 if $pos + 12 > $dirLen;
|
||
|
|
my ($index, $stream, $nameLen, $dType, $dLen) = unpack("x${pos}v4V", $$dataPt);
|
||
|
|
$pos += 12;
|
||
|
|
return 0 if $pos + $nameLen + $dLen > $dirLen;
|
||
|
|
my $tag = Image::ExifTool::Decode(undef,substr($$dataPt,$pos,$nameLen),'UCS2','II','Latin');
|
||
|
|
$tag =~ s/^WM\///; # remove leading "WM/"
|
||
|
|
$pos += $nameLen;
|
||
|
|
my $val = ReadASF($et,$dataPt,$pos,$dType,$dLen);
|
||
|
|
$et->HandleTag($tagTablePtr, $tag, $val,
|
||
|
|
DataPt => $dataPt,
|
||
|
|
Start => $pos,
|
||
|
|
Size => $dLen,
|
||
|
|
);
|
||
|
|
$pos += $dLen;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Process WM/Picture preview
|
||
|
|
# Inputs: 0) ExifTool object reference, 1) dirInfo ref, 2) tag table reference
|
||
|
|
# Returns: 1 on success
|
||
|
|
sub ProcessPicture($$$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo, $tagTablePtr) = @_;
|
||
|
|
my $dataPt = $$dirInfo{DataPt};
|
||
|
|
my $dirStart = $$dirInfo{DirStart};
|
||
|
|
my $dirLen = $$dirInfo{DirLen};
|
||
|
|
return 0 unless $dirLen > 9;
|
||
|
|
# extract picture type and length
|
||
|
|
my ($type, $picLen) = unpack("x${dirStart}CV", $$dataPt);
|
||
|
|
$et->VerboseDir('Picture');
|
||
|
|
$et->HandleTag($tagTablePtr, 0, $type);
|
||
|
|
# extract mime type and description strings (null-terminated unicode strings)
|
||
|
|
my $n = $dirLen - 5 - $picLen;
|
||
|
|
return 0 if $n & 0x01 or $n < 4;
|
||
|
|
my $str = substr($$dataPt, $dirStart+5, $n);
|
||
|
|
if ($str =~ /^((?:..)*?)\0\0((?:..)*?)\0\0/s) {
|
||
|
|
my ($mime, $desc) = ($1, $2);
|
||
|
|
$et->HandleTag($tagTablePtr, 1, $et->Decode($mime,'UCS2','II'));
|
||
|
|
$et->HandleTag($tagTablePtr, 2, $et->Decode($desc,'UCS2','II')) if length $desc;
|
||
|
|
}
|
||
|
|
$et->HandleTag($tagTablePtr, 3, substr($$dataPt, $dirStart+5+$n, $picLen));
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Process codec list
|
||
|
|
# Inputs: 0) ExifTool object reference, 1) dirInfo ref, 2) tag table reference
|
||
|
|
# Returns: 1 on success
|
||
|
|
sub ProcessCodecList($$$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo, $tagTablePtr) = @_;
|
||
|
|
my $dataPt = $$dirInfo{DataPt};
|
||
|
|
my $dirLen = $$dirInfo{DirLen};
|
||
|
|
return 0 if $dirLen < 20;
|
||
|
|
my $count = Get32u($dataPt, 16);
|
||
|
|
$et->VerboseDir($dirInfo, $count);
|
||
|
|
my $pos = 20;
|
||
|
|
my $i;
|
||
|
|
my %codecType = ( 1 => 'Video', 2 => 'Audio' );
|
||
|
|
for ($i=0; $i<$count; ++$i) {
|
||
|
|
return 0 if $pos + 8 > $dirLen;
|
||
|
|
my $type = ($codecType{Get16u($dataPt, $pos)} || 'Other') . 'Codec';
|
||
|
|
# stupid Windows programmers: these lengths are in characters (others are in bytes)
|
||
|
|
my $nameLen = Get16u($dataPt, $pos + 2) * 2;
|
||
|
|
$pos += 4;
|
||
|
|
return 0 if $pos + $nameLen + 2 > $dirLen;
|
||
|
|
my $name = $et->Decode(substr($$dataPt,$pos,$nameLen),'UCS2','II');
|
||
|
|
$et->HandleTag($tagTablePtr, "${type}Name", $name);
|
||
|
|
my $descLen = Get16u($dataPt, $pos + $nameLen) * 2;
|
||
|
|
$pos += $nameLen + 2;
|
||
|
|
return 0 if $pos + $descLen + 2 > $dirLen;
|
||
|
|
my $desc = $et->Decode(substr($$dataPt,$pos,$descLen),'UCS2','II');
|
||
|
|
$et->HandleTag($tagTablePtr, "${type}Description", $desc);
|
||
|
|
my $infoLen = Get16u($dataPt, $pos + $descLen);
|
||
|
|
$pos += $descLen + 2 + $infoLen;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Extract information from a ASF file
|
||
|
|
# Inputs: 0) ExifTool object reference, 1) dirInfo reference, 2) tag table ref
|
||
|
|
# Returns: 1 on success, 0 if this wasn't a valid ASF file
|
||
|
|
sub ProcessASF($$;$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo, $tagTablePtr) = @_;
|
||
|
|
my $raf = $$dirInfo{RAF};
|
||
|
|
my $verbose = $et->Options('Verbose');
|
||
|
|
my $rtnVal = 0;
|
||
|
|
my $pos = 0;
|
||
|
|
my ($buff, $err, @parentTable, @childEnd);
|
||
|
|
|
||
|
|
for (;;) {
|
||
|
|
last unless $raf->Read($buff, 24) == 24;
|
||
|
|
$pos += 24;
|
||
|
|
my $tag = GetGUID(substr($buff,0,16));
|
||
|
|
unless ($tagTablePtr) {
|
||
|
|
# verify this is a valid ASF file
|
||
|
|
last unless $tag eq '75B22630-668E-11CF-A6D9-00AA0062CE6C';
|
||
|
|
my $fileType = $$et{FILE_EXT};
|
||
|
|
$fileType = 'ASF' unless $fileType and $fileType =~ /^(ASF|WMV|WMA|DIVX)$/;
|
||
|
|
$et->SetFileType($fileType);
|
||
|
|
SetByteOrder('II');
|
||
|
|
$tagTablePtr = GetTagTable('Image::ExifTool::ASF::Main');
|
||
|
|
$rtnVal = 1;
|
||
|
|
}
|
||
|
|
my $size = Image::ExifTool::Get64u(\$buff, 16) - 24;
|
||
|
|
if ($size < 0) {
|
||
|
|
$err = 'Invalid ASF object size';
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
if ($size > 0x7fffffff) {
|
||
|
|
if ($size > 0x7fffffff * 4294967296) {
|
||
|
|
$err = 'Invalid ASF object size';
|
||
|
|
} elsif ($et->Options('LargeFileSupport')) {
|
||
|
|
if ($raf->Seek($size, 1)) {
|
||
|
|
$et->VPrint(0, " Skipped large ASF object ($size bytes)\n");
|
||
|
|
$pos += $size;
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
$err = 'Error seeking past large ASF object';
|
||
|
|
} else {
|
||
|
|
$err = 'Large ASF objects not supported (LargeFileSupport not set)';
|
||
|
|
}
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
# go back to parent tag table if done with previous children
|
||
|
|
if (@childEnd and $pos >= $childEnd[-1]) {
|
||
|
|
pop @childEnd;
|
||
|
|
$tagTablePtr = pop @parentTable;
|
||
|
|
$$et{INDENT} = substr($$et{INDENT},0,-2);
|
||
|
|
}
|
||
|
|
my $tagInfo = $et->GetTagInfo($tagTablePtr, $tag);
|
||
|
|
$verbose and $et->VerboseInfo($tag, $tagInfo);
|
||
|
|
if ($tagInfo) {
|
||
|
|
my $subdir = $$tagInfo{SubDirectory};
|
||
|
|
if ($subdir) {
|
||
|
|
my $subTable = GetTagTable($$subdir{TagTable});
|
||
|
|
if ($$subTable{PROCESS_PROC} eq \&ProcessASF) {
|
||
|
|
if (defined $$subdir{Size}) {
|
||
|
|
my $s = $$subdir{Size};
|
||
|
|
if ($verbose > 2) {
|
||
|
|
$raf->Read($buff, $s) == $s or $err = 'Truncated file', last;
|
||
|
|
$et->VerboseDump(\$buff);
|
||
|
|
} elsif (not $raf->Seek($s, 1)) {
|
||
|
|
$err = 'Seek error';
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
# continue processing linearly using subTable
|
||
|
|
push @parentTable, $tagTablePtr;
|
||
|
|
push @childEnd, $pos + $size;
|
||
|
|
$tagTablePtr = $subTable;
|
||
|
|
$pos += $$subdir{Size};
|
||
|
|
if ($verbose) {
|
||
|
|
$$et{INDENT} .= '| ';
|
||
|
|
$et->VerboseDir($$tagInfo{Name});
|
||
|
|
}
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
} elsif ($raf->Read($buff, $size) == $size) {
|
||
|
|
my %subdirInfo = (
|
||
|
|
DataPt => \$buff,
|
||
|
|
DirStart => 0,
|
||
|
|
DirLen => $size,
|
||
|
|
DirName => $$tagInfo{Name},
|
||
|
|
);
|
||
|
|
$et->VerboseDump(\$buff) if $verbose > 2;
|
||
|
|
unless ($et->ProcessDirectory(\%subdirInfo, $subTable, $$subdir{ProcessProc})) {
|
||
|
|
$et->Warn("Error processing $$tagInfo{Name} directory");
|
||
|
|
}
|
||
|
|
$pos += $size;
|
||
|
|
next;
|
||
|
|
} else {
|
||
|
|
$err = 'Unexpected end of file';
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($verbose > 2) {
|
||
|
|
$raf->Read($buff, $size) == $size or $err = 'Truncated file', last;
|
||
|
|
$et->VerboseDump(\$buff);
|
||
|
|
} elsif (not $raf->Seek($size, 1)) { # skip the block
|
||
|
|
$err = 'Seek error';
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
$pos += $size;
|
||
|
|
}
|
||
|
|
$err and $et->Warn($err);
|
||
|
|
return $rtnVal;
|
||
|
|
}
|
||
|
|
|
||
|
|
1; # end
|
||
|
|
|
||
|
|
__END__
|
||
|
|
|
||
|
|
=head1 NAME
|
||
|
|
|
||
|
|
Image::ExifTool::ASF - Read ASF/WMA/WMV meta information
|
||
|
|
|
||
|
|
=head1 SYNOPSIS
|
||
|
|
|
||
|
|
This module is used by Image::ExifTool
|
||
|
|
|
||
|
|
=head1 DESCRIPTION
|
||
|
|
|
||
|
|
This module contains routines required by Image::ExifTool to extract
|
||
|
|
information from Microsoft Advanced Systems Format (ASF) files, including
|
||
|
|
Windows Media Audio (WMA) and Windows Media Video (WMV) files.
|
||
|
|
|
||
|
|
=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.microsoft.com/windows/windowsmedia/format/asfspec.aspx>
|
||
|
|
|
||
|
|
=back
|
||
|
|
|
||
|
|
=head1 SEE ALSO
|
||
|
|
|
||
|
|
L<Image::ExifTool::TagNames/ASF Tags>,
|
||
|
|
L<Image::ExifTool(3pm)|Image::ExifTool>
|
||
|
|
|
||
|
|
=cut
|
||
|
|
|