Very early implementation for HTMLMediaElement / Web Audio API integration

content/renderer/render_view.cc

 // Copyright (c) 2011 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/render_view.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
 
+#include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
 #include "base/string_piece.h"
 #include "base/string_split.h"
@@ skipping 1986 matching lines @@
   FOR_EACH_OBSERVER(
       RenderViewObserver, observers_, WillCreateMediaPlayer(frame, client));
 
   scoped_ptr<media::MessageLoopFactory> message_loop_factory(
       new media::MessageLoopFactoryImpl());
   scoped_ptr<media::FilterCollection> collection(
       new media::FilterCollection());
 
   // Add in any custom filter factories first.
   const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
+  AudioRendererImpl* audio_renderer = NULL;
   if (!cmd_line->HasSwitch(switches::kDisableAudio)) {
     // Add the chrome specific audio renderer.
-    collection->AddAudioRenderer(new AudioRendererImpl());
+    audio_renderer = new AudioRendererImpl(MessageLoop::current());
+    collection->AddAudioRenderer(audio_renderer);
   }
 
   scoped_refptr<webkit_glue::WebVideoRenderer> video_renderer;
   bool pts_logging = cmd_line->HasSwitch(switches::kEnableVideoLogging);
   scoped_refptr<webkit_glue::VideoRendererImpl> renderer(
       new webkit_glue::VideoRendererImpl(pts_logging));
   collection->AddVideoRenderer(renderer);
   video_renderer = renderer;
 
   scoped_ptr<webkit_glue::WebMediaPlayerImpl> result(
       new webkit_glue::WebMediaPlayerImpl(client,
                                           collection.release(),
+                                          audio_renderer,
                                           message_loop_factory.release(),
                                           media_stream_impl_.get(),
                                           new RenderMediaLog()));
   if (!result->Initialize(frame,
                           cmd_line->HasSwitch(switches::kSimpleDataSource),
                           video_renderer)) {
     return NULL;
   }
   return result.release();
 }
@@ skipping 2486 matching lines @@
 }
 #endif
 
 void RenderView::OnContextMenuClosed(
     const webkit_glue::CustomContextMenuContext& custom_context) {
   if (custom_context.is_pepper_menu)
     pepper_delegate_.OnContextMenuClosed(custom_context);
   else
     context_menu_node_.reset();
 }