Reland 15721002: Hook up the device selection to the WebAudio live audio

content/renderer/media/renderer_webaudiodevice_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/media/renderer_webaudiodevice_impl.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "content/renderer/media/audio_device_factory.h"
 #include "content/renderer/render_view_impl.h"
 #include "media/audio/audio_output_device.h"
 #include "media/base/media_switches.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 
 using WebKit::WebAudioDevice;
 using WebKit::WebFrame;
 using WebKit::WebVector;
 using WebKit::WebView;
 
 namespace content {
 
 RendererWebAudioDeviceImpl::RendererWebAudioDeviceImpl(
     const media::AudioParameters& params,
-    WebAudioDevice::RenderCallback* callback)
+    WebAudioDevice::RenderCallback* callback,
+    int session_id)
     : params_(params),
-      client_callback_(callback) {
+      client_callback_(callback),
+      session_id_(session_id) {
   DCHECK(client_callback_);
 }
 
 RendererWebAudioDeviceImpl::~RendererWebAudioDeviceImpl() {
   DCHECK(!output_device_.get());
 }
 
 void RendererWebAudioDeviceImpl::start() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   if (output_device_.get())
     return;  // Already started.
 
   // Assumption: This method is being invoked within a V8 call stack.  CHECKs
   // will fail in the call to frameForCurrentContext() otherwise.
   //
   // Therefore, we can perform look-ups to determine which RenderView is
   // starting the audio device.  The reason for all this is because the creator
   // of the WebAudio objects might not be the actual source of the audio (e.g.,
   // an extension creates a object that is passed and used within a page).
   WebFrame* const web_frame = WebFrame::frameForCurrentContext();
   WebView* const web_view = web_frame ? web_frame->view() : NULL;
   RenderViewImpl* const render_view =
       web_view ? RenderViewImpl::FromWebView(web_view) : NULL;
   output_device_ = AudioDeviceFactory::NewOutputDevice(
       render_view ? render_view->routing_id() : MSG_ROUTING_NONE);
-  output_device_->Initialize(params_, this);
+  output_device_->InitializeUnifiedStream(params_, this, session_id_);
   output_device_->Start();
   // Note: Default behavior is to auto-play on start.
 }
 
 void RendererWebAudioDeviceImpl::stop() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   if (output_device_.get()) {
     output_device_->Stop();
     output_device_ = NULL;
@@ skipping 32 matching lines @@
                              web_audio_dest_data,
                              dest->frames());
   }
 }
 
 void RendererWebAudioDeviceImpl::OnRenderError() {
   // TODO(crogers): implement error handling.
 }
 
 }  // namespace content