Add OfflineAudioDestinationNode

third_party/WebKit/Source/modules/webaudio/OfflineAudioDestinationNode.cpp

 /*
  * Copyright (C) 2011, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "modules/webaudio/OfflineAudioDestinationNode.h"
 
+#include "core/dom/ExceptionCode.h"
+#include "core/dom/ExecutionContext.h"
 #include "core/dom/ExecutionContextTask.h"
 #include "modules/webaudio/AudioNodeInput.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "modules/webaudio/BaseAudioContext.h"
 #include "modules/webaudio/OfflineAudioContext.h"
 #include "platform/audio/AudioBus.h"
 #include "platform/audio/DenormalDisabler.h"
 #include "platform/audio/HRTFDatabaseLoader.h"
 #include "public/platform/Platform.h"
 #include "wtf/PtrUtil.h"
@@ skipping 269 matching lines @@
     // Let the context take care of any business at the end of each render quantum.
     context()->handlePostOfflineRenderTasks();
 
     // Advance current sample-frame.
     size_t newSampleFrame = m_currentSampleFrame + numberOfFrames;
     releaseStore(&m_currentSampleFrame, newSampleFrame);
 
     return false;
 }
 
+void OfflineAudioDestinationHandler::setChannelCount(unsigned long newChannelCount, ExceptionState& exceptionState)
+{
+    DCHECK(isMainThread());
+    BaseAudioContext::AutoLocker locker(context());
+
+    // Cannot change the channelCount to a different value.
+    if (newChannelCount != channelCount()) {
+        exceptionState.throwDOMException(
+            NotSupportedError,
+            ExceptionMessages::indexOutsideRange<unsigned long>(
+                "channelCount",
+                newChannelCount,
+                channelCount(),
+                ExceptionMessages::InclusiveBound,
+                channelCount(),
+                ExceptionMessages::InclusiveBound));
+    }
+}
+
+void OfflineAudioDestinationHandler::setChannelCountMode(const String& mode, ExceptionState& exceptionState)
+{
+    DCHECK(isMainThread());
+    BaseAudioContext::AutoLocker locker(context());
+
+    if (mode != channelCountMode()) {
+        exceptionState.throwDOMException(
+            NotSupportedError,
+            "Cannot change channelCountMode from \""
+                + channelCountMode()
+                + "\" to \""
+                + mode + "\"");
+    }
+}
+
 // ----------------------------------------------------------------
 
 OfflineAudioDestinationNode::OfflineAudioDestinationNode(BaseAudioContext& context, AudioBuffer* renderTarget)
     : AudioDestinationNode(context)
 {
     setHandler(OfflineAudioDestinationHandler::create(*this, renderTarget));
 }
 
 OfflineAudioDestinationNode* OfflineAudioDestinationNode::create(BaseAudioContext* context, AudioBuffer* renderTarget)
 {
     return new OfflineAudioDestinationNode(*context, renderTarget);
 }
 
 } // namespace blink