Add support for Philips DSDIFF (.dff) DSD files

src/dsdiff/DsdiffParser.ts

@@ -77,8 +77,8 @@ export class DsdiffParser extends BasicParser {
         break;
 
       case 'DSD':
-        const duration = header.chunkSize * 8 / (this.metadata.format.numberOfChannels * this.metadata.format.sampleRate); // ToDO: not sure if this is correct
-        this.metadata.setFormat('duration', duration);
+        this.metadata.setFormat('numberOfSamples', header.chunkSize * 8 / this.metadata.format.numberOfChannels);
+        this.metadata.setFormat('duration', this.metadata.format.numberOfSamples / this.metadata.format.sampleRate);
         break;
 
     }

test/test-dsdiff.ts

@@ -0,0 +1,35 @@
+import {assert} from 'chai';
+import * as mm from '../src';
+import * as path from 'path';
+
+describe('Parse Philips DSDIFF', () => {
+
+  const dsdiffamplePath = path.join(__dirname, 'samples', 'dsdiff');
+
+  it('parse: DSD64.dff', async () => {
+
+    const filePath = path.join(dsdiffamplePath, 'DSD64.dff');
+
+    const {format, common} = await mm.parseFile(filePath, {duration: false});
+
+    // format chunk information
+    assert.strictEqual(format.dataformat, 'DSDIFF/DSD');
+    assert.deepEqual(format.lossless, true);
+    assert.deepEqual(format.tagTypes, ['ID3v2.3']);
+    assert.deepEqual(format.numberOfChannels, 2, 'format.numberOfChannels');
+    assert.deepEqual(format.bitsPerSample, 1, 'format.bitsPerSample');
+    assert.deepEqual(format.sampleRate, 2822400, 'format.sampleRate [Hz]');
+    assert.deepEqual(format.numberOfSamples, 300800, 'format.numberOfSamples');
+    assert.deepEqual(format.duration, 300800 / 2822400, 'format.duration');
+    assert.deepEqual(format.bitrate, 5644800, 'format.bitrate');
+    assert.deepEqual(format.tagTypes, ['ID3v2.3'], 'TAG headers');
+
+    // ID3v2 chunk information
+    assert.strictEqual(common.artist, 'CANTUS (Tove Ramlo-Ystad) & Frode Fjellheim', 'common.artist');
+    assert.strictEqual(common.title, 'Kyrie', 'common.title');
+    assert.strictEqual(common.album, 'SPES', 'common.album');
+    assert.deepEqual(common.genre, ['Choral'], 'common.genre');
+    assert.deepEqual(common.track, {no: 4, of: 12}, 'common.track');
+  });
+
+});