securityos/node_modules/music-metadata/lib/asf/GUID.js

"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;