Initial working version

2022-12-22 20:22:22 +11:00
parent ce9675a1cc
commit ced7fa5092
902 changed files with 150252 additions and 0 deletions
@@ -0,0 +1,54 @@
+"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)
+        };
+    }
+};