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Viewing file:     DsfChunk.js (1.92 KB)      -rw-r--r--

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FormatChunk = exports.ChannelType = exports.DsdChunk = exports.ChunkHeader = void 0;
const Token = require("token-types");
const FourCC_1 = require("../common/FourCC");
/**
 * Common chunk DSD header: the 'chunk name (Four-CC)' & chunk size
 */
exports.ChunkHeader = {
    len: 12,
    get: (buf, off) => {
        return { id: FourCC_1.FourCcToken.get(buf, off), size: Token.UINT64_LE.get(buf, off + 4) };
    }
};
/**
 * Common chunk DSD header: the 'chunk name (Four-CC)' & chunk size
 */
exports.DsdChunk = {
    len: 16,
    get: (buf, off) => {
        return {
            fileSize: Token.INT64_LE.get(buf, off),
            metadataPointer: Token.INT64_LE.get(buf, off + 8)
        };
    }
};
var ChannelType;
(function (ChannelType) {
    ChannelType[ChannelType["mono"] = 1] = "mono";
    ChannelType[ChannelType["stereo"] = 2] = "stereo";
    ChannelType[ChannelType["channels"] = 3] = "channels";
    ChannelType[ChannelType["quad"] = 4] = "quad";
    ChannelType[ChannelType["4 channels"] = 5] = "4 channels";
    ChannelType[ChannelType["5 channels"] = 6] = "5 channels";
    ChannelType[ChannelType["5.1 channels"] = 7] = "5.1 channels";
})(ChannelType = exports.ChannelType || (exports.ChannelType = {}));
/**
 * Common chunk DSD header: the 'chunk name (Four-CC)' & chunk size
 */
exports.FormatChunk = {
    len: 40,
    get: (buf, off) => {
        return {
            formatVersion: Token.INT32_LE.get(buf, off),
            formatID: Token.INT32_LE.get(buf, off + 4),
            channelType: Token.INT32_LE.get(buf, off + 8),
            channelNum: Token.INT32_LE.get(buf, off + 12),
            samplingFrequency: Token.INT32_LE.get(buf, off + 16),
            bitsPerSample: Token.INT32_LE.get(buf, off + 20),
            sampleCount: Token.INT64_LE.get(buf, off + 24),
            blockSizePerChannel: Token.INT32_LE.get(buf, off + 32)
        };
    }
};