Index: media/base/audio_bus_unittest.cc |
diff --git a/media/base/audio_bus_unittest.cc b/media/base/audio_bus_unittest.cc |
index 8c3a59f4efa103eb406302f7204c19e3d8350495..562d760b8dc17cc6cbd99dbe2f388034211dd9b8 100644 |
--- a/media/base/audio_bus_unittest.cc |
+++ b/media/base/audio_bus_unittest.cc |
@@ -356,4 +356,35 @@ TEST_F(AudioBusTest, ToInterleavedPartial) { |
kPartialFrames * sizeof(*kTestVectorInt16) * kTestVectorChannels), 0); |
} |
+TEST_F(AudioBusTest, Scale) { |
+ scoped_ptr<AudioBus> bus = AudioBus::Create(kChannels, kFrameCount); |
+ |
+ // Fill the bus with dummy data. |
+ static const float kFillValue = 1; |
+ for (int i = 0; i < bus->channels(); ++i) |
+ std::fill(bus->channel(i), bus->channel(i) + bus->frames(), kFillValue); |
+ |
+ // Adjust by an invalid volume and ensure volume is unchanged. |
+ bus->Scale(-1); |
+ for (int i = 0; i < bus->channels(); ++i) { |
+ SCOPED_TRACE("Invalid Scale"); |
+ VerifyValue(bus->channel(i), bus->frames(), kFillValue); |
+ } |
+ |
+ // Verify correct volume adjustment. |
+ static const float kVolume = 0.5; |
+ bus->Scale(kVolume); |
+ for (int i = 0; i < bus->channels(); ++i) { |
+ SCOPED_TRACE("Half Scale"); |
+ VerifyValue(bus->channel(i), bus->frames(), kFillValue * kVolume); |
+ } |
+ |
+ // Verify zero volume case. |
+ bus->Scale(0); |
+ for (int i = 0; i < bus->channels(); ++i) { |
+ SCOPED_TRACE("Zero Scale"); |
+ VerifyValue(bus->channel(i), bus->frames(), 0); |
+ } |
+} |
+ |
} // namespace media |