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 96995)
+++ webkit/glue/webmediaplayer_impl.cc	(working copy)
@@ -9,6 +9,8 @@
 
 #include "base/callback.h"
 #include "base/command_line.h"
+#include "content/renderer/media/audio_renderer_impl.h"

[scherkus (not reviewing), 2011/08/23 15:16:01]

src/webkit cannot depend on src/content code

what we'll likely have to do is declare an intermediate type/interface that
allows us to create the AudioRendererImpl inside of RenderView but still let us
set the audio provider

[Chris Rogers, 2011/08/24 00:41:52]

I've abstracted this a bit more and now am dealing with:
media::AudioRendererSink::RenderCallback

On 2011/08/23 15:16:01, scherkus wrote:

+#include "content/renderer/renderer_webaudiosourceprovider_impl.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,
+    AudioRendererImpl* audio_renderer,
     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 +111,9 @@
   main_loop_ = MessageLoop::current();
   media_log_->AddEvent(
       media_log_->CreateEvent(media::MediaLogEvent::WEBMEDIAPLAYER_CREATED));
+
+    printf("audio_renderer = %p\n", audio_renderer);
+    audio_renderer_ = audio_renderer;
 }
 
 bool WebMediaPlayerImpl::Initialize(
@@ -822,4 +829,14 @@
   return client_;
 }
 
+WebKit::WebAudioSourceProvider* WebMediaPlayerImpl::webAudioSourceProvider() {
+  if (!audio_source_provider_) {
+    audio_source_provider_ = new RendererWebAudioSourceProviderImpl(audio_renderer_.get());
+    // FIXME: should NOT call this in real-time audio thread...
+    audio_renderer_->SetAudioSink(audio_source_provider_);
+  }
+  
+  return audio_source_provider_;
+}
+
 }  // namespace webkit_glue