Add constructor for MediaStreamAudioSourceNode

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

 /*
  * Copyright (C) 2012, 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
@@ skipping 10 matching lines @@
  * 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/MediaStreamAudioSourceNode.h"
 
 #include "core/dom/ExceptionCode.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "modules/webaudio/BaseAudioContext.h"
+#include "modules/webaudio/MediaStreamAudioSourceOptions.h"
 #include "wtf/Locker.h"
 #include <memory>
 
 namespace blink {
 
 MediaStreamAudioSourceHandler::MediaStreamAudioSourceHandler(
     AudioNode& node,
     MediaStream& mediaStream,
     MediaStreamTrack* audioTrack,
     std::unique_ptr<AudioSourceProvider> audioSourceProvider)
@@ skipping 123 matching lines @@
 
   // TODO(hongchan): Only stereo streams are supported right now. We should be
   // able to accept multi-channel streams.
   node->setFormat(2, context.sampleRate());
   // context keeps reference until node is disconnected
   context.notifySourceNodeStartedProcessing(node);
 
   return node;
 }
 
+MediaStreamAudioSourceNode* MediaStreamAudioSourceNode::create(
+    BaseAudioContext* context,
+    const MediaStreamAudioSourceOptions& options,
+    ExceptionState& exceptionState) {
+  return create(*context, *options.mediaStream(), exceptionState);
+}
+
 DEFINE_TRACE(MediaStreamAudioSourceNode) {
   AudioSourceProviderClient::trace(visitor);
   AudioSourceNode::trace(visitor);
 }
 
 MediaStreamAudioSourceHandler&
 MediaStreamAudioSourceNode::mediaStreamAudioSourceHandler() const {
   return static_cast<MediaStreamAudioSourceHandler&>(handler());
 }
 
 MediaStream* MediaStreamAudioSourceNode::getMediaStream() const {
   return mediaStreamAudioSourceHandler().getMediaStream();
 }
 
 void MediaStreamAudioSourceNode::setFormat(size_t numberOfChannels,
                                            float sourceSampleRate) {
   mediaStreamAudioSourceHandler().setFormat(numberOfChannels, sourceSampleRate);
 }
 
 }  // namespace blink