1 files changed, 46 insertions, 12 deletions

diff --git a/Source/WebCore/Modules/webaudio/DefaultAudioDestinationNode.cpp b/Source/WebCore/Modules/webaudio/DefaultAudioDestinationNode.cpp
index 6b4f9b85a..b2542d326 100644
--- a/Source/WebCore/Modules/webaudio/DefaultAudioDestinationNode.cpp
+++ b/Source/WebCore/Modules/webaudio/DefaultAudioDestinationNode.cpp
@@ -28,17 +28,18 @@
 
 #include "DefaultAudioDestinationNode.h"
 
-#include "ExceptionCode.h"
+#include "AudioContext.h"
+#include "AudioDestination.h"
 #include "Logging.h"
+#include "ScriptExecutionContext.h"
 #include <wtf/MainThread.h>
 
 const unsigned EnabledInputChannels = 2;
 
 namespace WebCore {
     
-DefaultAudioDestinationNode::DefaultAudioDestinationNode(AudioContext* context)
+DefaultAudioDestinationNode::DefaultAudioDestinationNode(AudioContext& context)
     : AudioDestinationNode(context, AudioDestination::hardwareSampleRate())
-    , m_numberOfInputChannels(0)
 {
     // Node-specific default mixing rules.
     m_channelCount = 2;
@@ -104,12 +105,38 @@ void DefaultAudioDestinationNode::startRendering()
         m_destination->start();
 }
 
-unsigned long DefaultAudioDestinationNode::maxChannelCount() const
+void DefaultAudioDestinationNode::resume(Function<void ()>&& function)
+{
+    ASSERT(isInitialized());
+    if (isInitialized())
+        m_destination->start();
+    if (auto scriptExecutionContext = context().scriptExecutionContext())
+        scriptExecutionContext->postTask(WTFMove(function));
+}
+
+void DefaultAudioDestinationNode::suspend(Function<void ()>&& function)
+{
+    ASSERT(isInitialized());
+    if (isInitialized())
+        m_destination->stop();
+    if (auto scriptExecutionContext = context().scriptExecutionContext())
+        scriptExecutionContext->postTask(WTFMove(function));
+}
+
+void DefaultAudioDestinationNode::close(Function<void()>&& function)
+{
+    ASSERT(isInitialized());
+    uninitialize();
+    if (auto scriptExecutionContext = context().scriptExecutionContext())
+        scriptExecutionContext->postTask(WTFMove(function));
+}
+
+unsigned DefaultAudioDestinationNode::maxChannelCount() const
 {
     return AudioDestination::maxChannelCount();
 }
 
-void DefaultAudioDestinationNode::setChannelCount(unsigned long channelCount, ExceptionCode& ec)
+ExceptionOr<void> DefaultAudioDestinationNode::setChannelCount(unsigned channelCount)
 {
     // The channelCount for the input to this node controls the actual number of channels we
     // send to the audio hardware. It can only be set depending on the maximum number of
@@ -117,20 +144,27 @@ void DefaultAudioDestinationNode::setChannelCount(unsigned long channelCount, Ex
 
     ASSERT(isMainThread());
 
-    if (!maxChannelCount() || channelCount > maxChannelCount()) {
-        ec = INVALID_STATE_ERR;
-        return;
-    }
+    if (!maxChannelCount() || channelCount > maxChannelCount())
+        return Exception { INVALID_STATE_ERR };
 
-    unsigned long oldChannelCount = this->channelCount();
-    AudioNode::setChannelCount(channelCount, ec);
+    auto oldChannelCount = this->channelCount();
+    auto result = AudioNode::setChannelCount(channelCount);
+    if (result.hasException())
+        return result;
 
-    if (!ec && this->channelCount() != oldChannelCount && isInitialized()) {
+    if (this->channelCount() != oldChannelCount && isInitialized()) {
         // Re-create destination.
         m_destination->stop();
         createDestination();
         m_destination->start();
     }
+
+    return { };
+}
+
+bool DefaultAudioDestinationNode::isPlaying()
+{
+    return m_destination && m_destination->isPlaying();
 }
 
 } // namespace WebCore