"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); /** * 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 GUID { static fromBin(bin, offset = 0) { return new GUID(this.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) { const guid = objectId.readUInt32LE(offset).toString(16) + "-" + objectId.readUInt16LE(offset + 4).toString(16) + "-" + objectId.readUInt16LE(offset + 6).toString(16) + "-" + objectId.readUInt16BE(offset + 8).toString(16) + "-" + objectId.slice(offset + 10, offset + 16).toString('hex'); return guid.toUpperCase(); } /** * Decode stream type * @param mediaType Media type GUID * @returns Media type */ static decodeMediaType(mediaType) { switch (mediaType.str) { case GUID.AudioMedia.str: return 'audio'; case GUID.VideoMedia.str: return 'video'; case GUID.CommandMedia.str: return 'command'; case GUID.Degradable_JPEG_Media.str: return 'degradable-jpeg'; case GUID.FileTransferMedia.str: return 'file-transfer'; case GUID.BinaryMedia.str: return 'binary'; } } /** * Encode GUID * @param guid GUID like: "B503BF5F-2EA9-CF11-8EE3-00C00C205365" * @returns Encoded Binary GUID */ static encode(str) { const bin = Buffer.alloc(16); bin.writeUInt32LE(parseInt(str.slice(0, 8), 16), 0); bin.writeUInt16LE(parseInt(str.slice(9, 13), 16), 4); bin.writeUInt16LE(parseInt(str.slice(14, 18), 16), 6); Buffer.from(str.slice(19, 23), "hex").copy(bin, 8); Buffer.from(str.slice(24), "hex").copy(bin, 10); return bin; } constructor(str) { this.str = str; } equals(guid) { return this.str === guid.str; } toBin() { return GUID.encode(this.str); } } // 10.1 Top-level ASF object GUIDs GUID.HeaderObject = new GUID("75B22630-668E-11CF-A6D9-00AA0062CE6C"); GUID.DataObject = new GUID("75B22636-668E-11CF-A6D9-00AA0062CE6C"); GUID.SimpleIndexObject = new GUID("33000890-E5B1-11CF-89F4-00A0C90349CB"); GUID.IndexObject = new GUID("D6E229D3-35DA-11D1-9034-00A0C90349BE"); GUID.MediaObjectIndexObject = new GUID("FEB103F8-12AD-4C64-840F-2A1D2F7AD48C"); GUID.TimecodeIndexObject = new GUID("3CB73FD0-0C4A-4803-953D-EDF7B6228F0C"); // 10.2 Header Object GUIDs GUID.FilePropertiesObject = new GUID("8CABDCA1-A947-11CF-8EE4-00C00C205365"); GUID.StreamPropertiesObject = new GUID("B7DC0791-A9B7-11CF-8EE6-00C00C205365"); GUID.HeaderExtensionObject = new GUID("5FBF03B5-A92E-11CF-8EE3-00C00C205365"); GUID.CodecListObject = new GUID("86D15240-311D-11D0-A3A4-00A0C90348F6"); GUID.ScriptCommandObject = new GUID("1EFB1A30-0B62-11D0-A39B-00A0C90348F6"); GUID.MarkerObject = new GUID("F487CD01-A951-11CF-8EE6-00C00C205365"); GUID.BitrateMutualExclusionObject = new GUID("D6E229DC-35DA-11D1-9034-00A0C90349BE"); GUID.ErrorCorrectionObject = new GUID("75B22635-668E-11CF-A6D9-00AA0062CE6C"); GUID.ContentDescriptionObject = new GUID("75B22633-668E-11CF-A6D9-00AA0062CE6C"); GUID.ExtendedContentDescriptionObject = new GUID("D2D0A440-E307-11D2-97F0-00A0C95EA850"); GUID.ContentBrandingObject = new GUID("2211B3FA-BD23-11D2-B4B7-00A0C955FC6E"); GUID.StreamBitratePropertiesObject = new GUID("7BF875CE-468D-11D1-8D82-006097C9A2B2"); GUID.ContentEncryptionObject = new GUID("2211B3FB-BD23-11D2-B4B7-00A0C955FC6E"); GUID.ExtendedContentEncryptionObject = new GUID("298AE614-2622-4C17-B935-DAE07EE9289C"); GUID.DigitalSignatureObject = new GUID("2211B3FC-BD23-11D2-B4B7-00A0C955FC6E"); GUID.PaddingObject = new GUID("1806D474-CADF-4509-A4BA-9AABCB96AAE8"); // 10.3 Header Extension Object GUIDs GUID.ExtendedStreamPropertiesObject = new GUID("14E6A5CB-C672-4332-8399-A96952065B5A"); GUID.AdvancedMutualExclusionObject = new GUID("A08649CF-4775-4670-8A16-6E35357566CD"); GUID.GroupMutualExclusionObject = new GUID("D1465A40-5A79-4338-B71B-E36B8FD6C249"); GUID.StreamPrioritizationObject = new GUID("D4FED15B-88D3-454F-81F0-ED5C45999E24"); GUID.BandwidthSharingObject = new GUID("A69609E6-517B-11D2-B6AF-00C04FD908E9"); GUID.LanguageListObject = new GUID("7C4346A9-EFE0-4BFC-B229-393EDE415C85"); GUID.MetadataObject = new GUID("C5F8CBEA-5BAF-4877-8467-AA8C44FA4CCA"); GUID.MetadataLibraryObject = new GUID("44231C94-9498-49D1-A141-1D134E457054"); GUID.IndexParametersObject = new GUID("D6E229DF-35DA-11D1-9034-00A0C90349BE"); GUID.MediaObjectIndexParametersObject = new GUID("6B203BAD-3F11-48E4-ACA8-D7613DE2CFA7"); GUID.TimecodeIndexParametersObject = new GUID("F55E496D-9797-4B5D-8C8B-604DFE9BFB24"); GUID.CompatibilityObject = new GUID("26F18B5D-4584-47EC-9F5F-0E651F0452C9"); GUID.AdvancedContentEncryptionObject = new GUID("43058533-6981-49E6-9B74-AD12CB86D58C"); // 10.4 Stream Properties Object Stream Type GUIDs GUID.AudioMedia = new GUID("F8699E40-5B4D-11CF-A8FD-00805F5C442B"); GUID.VideoMedia = new GUID("BC19EFC0-5B4D-11CF-A8FD-00805F5C442B"); GUID.CommandMedia = new GUID("59DACFC0-59E6-11D0-A3AC-00A0C90348F6"); GUID.JFIF_Media = new GUID("B61BE100-5B4E-11CF-A8FD-00805F5C442B"); GUID.Degradable_JPEG_Media = new GUID("35907DE0-E415-11CF-A917-00805F5C442B"); GUID.FileTransferMedia = new GUID("91BD222C-F21C-497A-8B6D-5AA86BFC0185"); GUID.BinaryMedia = new GUID("3AFB65E2-47EF-40F2-AC2C-70A90D71D343"); GUID.ASF_Index_Placeholder_Object = new GUID("D9AADE20-7C17-4F9C-BC28-8555DD98E2A2"); exports.default = GUID;