Index: third_party/WebKit/Source/platform/audio/AudioDestination.cpp |
diff --git a/third_party/WebKit/Source/platform/audio/AudioDestination.cpp b/third_party/WebKit/Source/platform/audio/AudioDestination.cpp |
index a6255c0dc837bc31988c44d176e7eb4d959db9f7..733bd66cfd913e0e1c7cda19e1afdc63b003700a 100644 |
--- a/third_party/WebKit/Source/platform/audio/AudioDestination.cpp |
+++ b/third_party/WebKit/Source/platform/audio/AudioDestination.cpp |
@@ -74,8 +74,9 @@ AudioDestination::AudioDestination(AudioIOCallback& callback, |
// Histogram for audioHardwareBufferSize |
DEFINE_STATIC_LOCAL(SparseHistogram, hardwareBufferSizeHistogram, |
("WebAudio.AudioDestination.HardwareBufferSize")); |
- // Histogram for the actual callback size used. Typically, this is the same as |
- // audioHardwareBufferSize, but can be adjusted depending on some heuristics below. |
+ // Histogram for the actual callback size used. Typically, this is the same |
+ // as audioHardwareBufferSize, but can be adjusted depending on some |
+ // heuristics below. |
DEFINE_STATIC_LOCAL(SparseHistogram, callbackBufferSizeHistogram, |
("WebAudio.AudioDestination.CallbackBufferSize")); |
@@ -85,14 +86,15 @@ AudioDestination::AudioDestination(AudioIOCallback& callback, |
m_callbackBufferSize = recommendedHardwareBufferSize; |
#if OS(ANDROID) |
- // The optimum low-latency hardware buffer size is usually too small on Android for WebAudio to |
- // render without glitching. So, if it is small, use a larger size. If it was already large, use |
- // the requested size. |
+ // The optimum low-latency hardware buffer size is usually too small on |
+ // Android for WebAudio to render without glitching. So, if it is small, use |
+ // a larger size. If it was already large, use the requested size. |
// |
- // Since WebAudio renders in 128-frame blocks, the small buffer sizes (144 for a Galaxy Nexus), |
- // cause significant processing jitter. Sometimes multiple blocks will processed, but other |
- // times will not be since the FIFO can satisfy the request. By using a larger |
- // callbackBufferSize, we smooth out the jitter. |
+ // Since WebAudio renders in 128-frame blocks, the small buffer sizes (144 |
+ // for a Galaxy Nexus), cause significant processing jitter. Sometimes |
+ // multiple blocks will processed, but other times will not be since the FIFO |
+ // can satisfy the request. By using a larger callbackBufferSize, we smooth |
+ // out the jitter. |
const size_t kSmallBufferSize = 1024; |
const size_t kDefaultCallbackBufferSize = 2048; |
@@ -125,8 +127,9 @@ AudioDestination::AudioDestination(AudioIOCallback& callback, |
// Input buffering. |
m_inputFifo = wrapUnique(new AudioFIFO(numberOfInputChannels, fifoSize)); |
- // If the callback size does not match the render size, then we need to buffer some |
- // extra silence for the input. Otherwise, we can over-consume the input FIFO. |
+ // If the callback size does not match the render size, then we need to |
+ // buffer some extra silence for the input. Otherwise, we can over-consume |
+ // the input FIFO. |
if (m_callbackBufferSize != renderBufferSize) { |
// FIXME: handle multi-channel input and don't hard-code to stereo. |
RefPtr<AudioBus> silence = AudioBus::create(2, renderBufferSize); |