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