WebAudio task shouldn't be running on suspend to reduce usage of CPU.

[framework/web/webkit-efl.git] / Source / WebCore / Modules / webaudio / DefaultAudioDestinationNode.cpp

diff --git a/Source/WebCore/Modules/webaudio/DefaultAudioDestinationNode.cpp b/Source/WebCore/Modules/webaudio/DefaultAudioDestinationNode.cpp
index fe47acc..369dd9e 100644 (file)
--- a/Source/WebCore/Modules/webaudio/DefaultAudioDestinationNode.cpp
+++ b/Source/WebCore/Modules/webaudio/DefaultAudioDestinationNode.cpp
@@ -29,11 +29,15 @@
 #include "DefaultAudioDestinationNode.h"
 
 #include "Logging.h"
+#include <wtf/MainThread.h>
+
+const unsigned EnabledInputChannels = 2;
 
 namespace WebCore {
     
 DefaultAudioDestinationNode::DefaultAudioDestinationNode(AudioContext* context)
     : AudioDestinationNode(context, AudioDestination::hardwareSampleRate())
+    , m_numberOfInputChannels(0)
 {
 }
 
@@ -44,27 +48,48 @@ DefaultAudioDestinationNode::~DefaultAudioDestinationNode()
 
 void DefaultAudioDestinationNode::initialize()
 {
+    ASSERT(isMainThread());
     if (isInitialized())
         return;
 
-    float hardwareSampleRate = AudioDestination::hardwareSampleRate();
-    LOG(WebAudio, ">>>> hardwareSampleRate = %f\n", hardwareSampleRate);
-    
-    m_destination = AudioDestination::create(*this, hardwareSampleRate);
-    
+    createDestination();
     AudioNode::initialize();
 }
 
 void DefaultAudioDestinationNode::uninitialize()
 {
+    ASSERT(isMainThread());
     if (!isInitialized())
         return;
 
     m_destination->stop();
+    m_numberOfInputChannels = 0;
 
     AudioNode::uninitialize();
 }
 
+void DefaultAudioDestinationNode::createDestination()
+{
+    float hardwareSampleRate = AudioDestination::hardwareSampleRate();
+    LOG(WebAudio, ">>>> hardwareSampleRate = %f\n", hardwareSampleRate);
+
+    m_destination = AudioDestination::create(*this, m_numberOfInputChannels, numberOfChannels(), hardwareSampleRate);
+}
+
+void DefaultAudioDestinationNode::enableInput()
+{
+    ASSERT(isMainThread());
+    if (m_numberOfInputChannels != EnabledInputChannels) {
+        m_numberOfInputChannels = EnabledInputChannels;
+
+        if (isInitialized()) {
+            m_destination->stop();
+            createDestination();
+            m_destination->start();
+        }
+    }
+}
+
 void DefaultAudioDestinationNode::startRendering()
 {
     ASSERT(isInitialized());
@@ -72,6 +97,14 @@ void DefaultAudioDestinationNode::startRendering()
         m_destination->start();
 }
 
+#if ENABLE(TIZEN_WEB_AUDIO)
+void DefaultAudioDestinationNode::pauseRendering()
+{
+    ASSERT(isInitialized());
+    if (isInitialized())
+        m_destination->stop();
+}
+#endif
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)