Very early implementation for HTMLMediaElement / Web Audio API integration

webkit/glue/webmediaplayer_impl.cc

Index: webkit/glue/webmediaplayer_impl.cc
===================================================================
--- webkit/glue/webmediaplayer_impl.cc	(revision 97713)
+++ webkit/glue/webmediaplayer_impl.cc	(working copy)
@@ -9,6 +9,8 @@
 
 #include "base/callback.h"
 #include "base/command_line.h"
+
+#include "content/renderer/render_audiosourceprovider.h"
 #include "media/base/composite_data_source_factory.h"
 #include "media/base/filter_collection.h"
 #include "media/base/limits.h"
@@ -86,10 +88,12 @@
 WebMediaPlayerImpl::WebMediaPlayerImpl(
     WebKit::WebMediaPlayerClient* client,
     media::FilterCollection* collection,
+    media::AudioRendererSink::RenderCallback* audio_render_callback,
     media::MessageLoopFactory* message_loop_factory,
     MediaStreamClient* media_stream_client,
     media::MediaLog* media_log)
-    : network_state_(WebKit::WebMediaPlayer::Empty),
+    : audio_source_provider_(0),
+      network_state_(WebKit::WebMediaPlayer::Empty),
       ready_state_(WebKit::WebMediaPlayer::HaveNothing),
       main_loop_(NULL),
       filter_collection_(collection),
@@ -107,6 +111,8 @@
   main_loop_ = MessageLoop::current();
   media_log_->AddEvent(
       media_log_->CreateEvent(media::MediaLogEvent::WEBMEDIAPLAYER_CREATED));
+
+  audio_render_callback_ = audio_render_callback;
 }
 
 bool WebMediaPlayerImpl::Initialize(
@@ -812,4 +818,16 @@
   return client_;
 }
 
+WebKit::WebAudioSourceProvider* WebMediaPlayerImpl::audioSourceProvider() {
+  if (!audio_render_callback_)
+    return NULL;
+
+  if (!audio_source_provider_) {
+    // FIXME: should NOT call this in real-time audio thread...
+    audio_source_provider_ = new RenderAudioSourceProvider(audio_render_callback_);
+  }
+  
+  return audio_source_provider_;
+}
+
 }  // namespace webkit_glue