music-metadata
Version:
Music metadata parser for Node.js, supporting virtual any audio and tag format.
110 lines (109 loc) • 5.88 kB
JavaScript
import { parseWindowsGuid, Guid } from 'win-guid';
/**
* Ref:
* - https://tools.ietf.org/html/draft-fleischman-asf-01, Appendix A: ASF GUIDs
* - http://drang.s4.xrea.com/program/tips/id3tag/wmp/10_asf_guids.html
* - http://drang.s4.xrea.com/program/tips/id3tag/wmp/index.html
* - http://drang.s4.xrea.com/program/tips/id3tag/wmp/10_asf_guids.html
*
* ASF File Structure:
* - https://msdn.microsoft.com/en-us/library/windows/desktop/ee663575(v=vs.85).aspx
*
* ASF GUIDs:
* - http://drang.s4.xrea.com/program/tips/id3tag/wmp/10_asf_guids.html
* - https://github.com/dji-sdk/FFmpeg/blob/master/libavformat/asf.c
*/
class AsfGuid {
static fromBin(bin, offset = 0) {
return new AsfGuid(AsfGuid.decode(bin, offset));
}
/**
* Decode GUID in format like "B503BF5F-2EA9-CF11-8EE3-00C00C205365"
* @param objectId Binary GUID
* @param offset Read offset in bytes, default 0
* @returns GUID as dashed hexadecimal representation
*/
static decode(objectId, offset = 0) {
return new Guid(objectId.subarray(offset, offset + 16)).toString();
}
/**
* Decode stream type
* @param mediaType Media type GUID
* @returns Media type
*/
static decodeMediaType(mediaType) {
switch (mediaType.str) {
case AsfGuid.AudioMedia.str: return 'audio';
case AsfGuid.VideoMedia.str: return 'video';
case AsfGuid.CommandMedia.str: return 'command';
case AsfGuid.Degradable_JPEG_Media.str: return 'degradable-jpeg';
case AsfGuid.FileTransferMedia.str: return 'file-transfer';
case AsfGuid.BinaryMedia.str: return 'binary';
}
}
/**
* Encode GUID
* @param guid GUID like: "B503BF5F-2EA9-CF11-8EE3-00C00C205365"
* @returns Encoded Binary GUID
*/
static encode(guid) {
return parseWindowsGuid(guid);
}
constructor(str) {
this.str = str;
}
equals(guid) {
return this.str === guid.str;
}
toBin() {
return AsfGuid.encode(this.str);
}
}
// 10.1 Top-level ASF object GUIDs
AsfGuid.HeaderObject = new AsfGuid("75B22630-668E-11CF-A6D9-00AA0062CE6C");
AsfGuid.DataObject = new AsfGuid("75B22636-668E-11CF-A6D9-00AA0062CE6C");
AsfGuid.SimpleIndexObject = new AsfGuid("33000890-E5B1-11CF-89F4-00A0C90349CB");
AsfGuid.IndexObject = new AsfGuid("D6E229D3-35DA-11D1-9034-00A0C90349BE");
AsfGuid.MediaObjectIndexObject = new AsfGuid("FEB103F8-12AD-4C64-840F-2A1D2F7AD48C");
AsfGuid.TimecodeIndexObject = new AsfGuid("3CB73FD0-0C4A-4803-953D-EDF7B6228F0C");
// 10.2 Header Object GUIDs
AsfGuid.FilePropertiesObject = new AsfGuid("8CABDCA1-A947-11CF-8EE4-00C00C205365");
AsfGuid.StreamPropertiesObject = new AsfGuid("B7DC0791-A9B7-11CF-8EE6-00C00C205365");
AsfGuid.HeaderExtensionObject = new AsfGuid("5FBF03B5-A92E-11CF-8EE3-00C00C205365");
AsfGuid.CodecListObject = new AsfGuid("86D15240-311D-11D0-A3A4-00A0C90348F6");
AsfGuid.ScriptCommandObject = new AsfGuid("1EFB1A30-0B62-11D0-A39B-00A0C90348F6");
AsfGuid.MarkerObject = new AsfGuid("F487CD01-A951-11CF-8EE6-00C00C205365");
AsfGuid.BitrateMutualExclusionObject = new AsfGuid("D6E229DC-35DA-11D1-9034-00A0C90349BE");
AsfGuid.ErrorCorrectionObject = new AsfGuid("75B22635-668E-11CF-A6D9-00AA0062CE6C");
AsfGuid.ContentDescriptionObject = new AsfGuid("75B22633-668E-11CF-A6D9-00AA0062CE6C");
AsfGuid.ExtendedContentDescriptionObject = new AsfGuid("D2D0A440-E307-11D2-97F0-00A0C95EA850");
AsfGuid.ContentBrandingObject = new AsfGuid("2211B3FA-BD23-11D2-B4B7-00A0C955FC6E");
AsfGuid.StreamBitratePropertiesObject = new AsfGuid("7BF875CE-468D-11D1-8D82-006097C9A2B2");
AsfGuid.ContentEncryptionObject = new AsfGuid("2211B3FB-BD23-11D2-B4B7-00A0C955FC6E");
AsfGuid.ExtendedContentEncryptionObject = new AsfGuid("298AE614-2622-4C17-B935-DAE07EE9289C");
AsfGuid.DigitalSignatureObject = new AsfGuid("2211B3FC-BD23-11D2-B4B7-00A0C955FC6E");
AsfGuid.PaddingObject = new AsfGuid("1806D474-CADF-4509-A4BA-9AABCB96AAE8");
// 10.3 Header Extension Object GUIDs
AsfGuid.ExtendedStreamPropertiesObject = new AsfGuid("14E6A5CB-C672-4332-8399-A96952065B5A");
AsfGuid.AdvancedMutualExclusionObject = new AsfGuid("A08649CF-4775-4670-8A16-6E35357566CD");
AsfGuid.GroupMutualExclusionObject = new AsfGuid("D1465A40-5A79-4338-B71B-E36B8FD6C249");
AsfGuid.StreamPrioritizationObject = new AsfGuid("D4FED15B-88D3-454F-81F0-ED5C45999E24");
AsfGuid.BandwidthSharingObject = new AsfGuid("A69609E6-517B-11D2-B6AF-00C04FD908E9");
AsfGuid.LanguageListObject = new AsfGuid("7C4346A9-EFE0-4BFC-B229-393EDE415C85");
AsfGuid.MetadataObject = new AsfGuid("C5F8CBEA-5BAF-4877-8467-AA8C44FA4CCA");
AsfGuid.MetadataLibraryObject = new AsfGuid("44231C94-9498-49D1-A141-1D134E457054");
AsfGuid.IndexParametersObject = new AsfGuid("D6E229DF-35DA-11D1-9034-00A0C90349BE");
AsfGuid.MediaObjectIndexParametersObject = new AsfGuid("6B203BAD-3F11-48E4-ACA8-D7613DE2CFA7");
AsfGuid.TimecodeIndexParametersObject = new AsfGuid("F55E496D-9797-4B5D-8C8B-604DFE9BFB24");
AsfGuid.CompatibilityObject = new AsfGuid("26F18B5D-4584-47EC-9F5F-0E651F0452C9");
AsfGuid.AdvancedContentEncryptionObject = new AsfGuid("43058533-6981-49E6-9B74-AD12CB86D58C");
// 10.4 Stream Properties Object Stream Type GUIDs
AsfGuid.AudioMedia = new AsfGuid("F8699E40-5B4D-11CF-A8FD-00805F5C442B");
AsfGuid.VideoMedia = new AsfGuid("BC19EFC0-5B4D-11CF-A8FD-00805F5C442B");
AsfGuid.CommandMedia = new AsfGuid("59DACFC0-59E6-11D0-A3AC-00A0C90348F6");
AsfGuid.JFIF_Media = new AsfGuid("B61BE100-5B4E-11CF-A8FD-00805F5C442B");
AsfGuid.Degradable_JPEG_Media = new AsfGuid("35907DE0-E415-11CF-A917-00805F5C442B");
AsfGuid.FileTransferMedia = new AsfGuid("91BD222C-F21C-497A-8B6D-5AA86BFC0185");
AsfGuid.BinaryMedia = new AsfGuid("3AFB65E2-47EF-40F2-AC2C-70A90D71D343");
AsfGuid.ASF_Index_Placeholder_Object = new AsfGuid("D9AADE20-7C17-4F9C-BC28-8555DD98E2A2");
export default AsfGuid;