Fix WaveFormat issue with StereoToMonoSampleProvider naudio#141

Xeno-Song · Dec 6, 2016 · e90fdd2 · e90fdd2
1 parent def393d
commit e90fdd2
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/NAudio/Wave/SampleProviders/StereoToMonoSampleProvider.cs b/NAudio/Wave/SampleProviders/StereoToMonoSampleProvider.cs
@@ -23,7 +23,7 @@ public StereoToMonoSampleProvider(ISampleProvider sourceProvider)
                 throw new ArgumentException("Source must be stereo");
             }
             this.sourceProvider = sourceProvider;
-            WaveFormat = new WaveFormat(sourceProvider.WaveFormat.SampleRate, 1);
+            WaveFormat = WaveFormat.CreateIeeeFloatWaveFormat(sourceProvider.WaveFormat.SampleRate, 1);
         }
 
         /// <summary>

diff --git a/NAudioTests/WaveStreams/StereoToMonoSampleProviderTests.cs b/NAudioTests/WaveStreams/StereoToMonoSampleProviderTests.cs
@@ -21,5 +21,15 @@ public void RightChannelOnly()
                 Assert.AreEqual(1 + 2*sample, buffer[sample], "sample #" + sample);
             }
         }
+
+        [Test]
+        public void CorrectOutputFormat()
+        {
+            var stereoSampleProvider = new TestSampleProvider(44100, 2);
+            var mono = stereoSampleProvider.ToMono(0f, 1f);
+            Assert.AreEqual(WaveFormatEncoding.IeeeFloat, mono.WaveFormat.Encoding);
+            Assert.AreEqual(1, mono.WaveFormat.Channels);
+            Assert.AreEqual(44100, mono.WaveFormat.SampleRate);
+        }
     }
 }