Merge pull request quodlibet#464 from drizzt/dsd_wavpack

wavpack: add support for wavpack DSD

mutagen/wavpack.py

@@ -91,6 +91,10 @@ def __init__(self, fileobj):
         self.channels = bool(header.flags & 4) or 2
         self.sample_rate = RATES[(header.flags >> 23) & 0xF]
 
+        # most common multiplier (DSD64)
+        if (header.flags >> 31) & 1:
+            self.sample_rate *= 4
+
         if header.total_samples == -1 or header.block_index != 0:
             # TODO: we could make this faster by using the tag size
             # and search backwards for the last block, then do

tests/test_wavpack.py

@@ -56,3 +56,27 @@ def test_pprint(self):
 
     def test_mime(self):
         self.failUnless("audio/x-wavpack" in self.audio.mime)
+
+
+class TWavPackDSD(TestCase):
+
+    def setUp(self):
+        self.audio = WavPack(os.path.join(DATA_DIR, "dsd.wv"))
+
+    def test_version(self):
+        self.failUnlessEqual(self.audio.info.version, 0x410)
+
+    def test_channels(self):
+        self.failUnlessEqual(self.audio.info.channels, 2)
+
+    def test_sample_rate(self):
+        self.failUnlessEqual(self.audio.info.sample_rate, 352800)
+
+    def test_length(self):
+        self.failUnlessAlmostEqual(self.audio.info.length, 0.01, 3)
+
+    def test_pprint(self):
+        self.audio.pprint()
+
+    def test_mime(self):
+        self.failUnless("audio/x-wavpack" in self.audio.mime)