Plumb media data from renderers up to MediaInternals in the browser process.

webkit/glue/webmediaplayer_impl.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 "webkit/glue/webmediaplayer_impl.h"
 
 #include <limits>
 #include <string>
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "media/base/composite_data_source_factory.h"
 #include "media/base/filter_collection.h"
 #include "media/base/limits.h"
+#include "media/base/media_log.h"
 #include "media/base/media_switches.h"
 #include "media/base/pipeline_impl.h"
 #include "media/base/video_frame.h"
 #include "media/filters/adaptive_demuxer.h"
 #include "media/filters/chunk_demuxer_factory.h"
 #include "media/filters/ffmpeg_audio_decoder.h"
 #include "media/filters/ffmpeg_demuxer_factory.h"
 #include "media/filters/ffmpeg_video_decoder.h"
 #include "media/filters/null_audio_renderer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebRect.h"
@@ skipping 287 matching lines @@
   chunk_demuxer_ = NULL;
 }
 
 /////////////////////////////////////////////////////////////////////////////
 // WebMediaPlayerImpl implementation
 
 WebMediaPlayerImpl::WebMediaPlayerImpl(
     WebKit::WebMediaPlayerClient* client,
     media::FilterCollection* collection,
     media::MessageLoopFactory* message_loop_factory,
-    MediaStreamClient* media_stream_client)
+    MediaStreamClient* media_stream_client,
+    media::MediaLog* media_log)
     : network_state_(WebKit::WebMediaPlayer::Empty),
       ready_state_(WebKit::WebMediaPlayer::HaveNothing),
       main_loop_(NULL),
       filter_collection_(collection),
       pipeline_(NULL),
       message_loop_factory_(message_loop_factory),
       paused_(true),
       seeking_(false),
       playback_rate_(0.0f),
       client_(client),
       proxy_(NULL),
-      media_stream_client_(media_stream_client) {
+      media_stream_client_(media_stream_client),
+      media_log_(media_log) {
   // Saves the current message loop.
   DCHECK(!main_loop_);
   main_loop_ = MessageLoop::current();
+  media_log_->AddEventOfType(media::MediaLogEvent::CREATE);
 }
 
 bool WebMediaPlayerImpl::Initialize(
     WebKit::WebFrame* frame,
     bool use_simple_data_source,
     scoped_refptr<WebVideoRenderer> web_video_renderer) {
   MessageLoop* pipeline_message_loop =
       message_loop_factory_->GetMessageLoop("PipelineThread");
   if (!pipeline_message_loop) {
     NOTREACHED() << "Could not start PipelineThread";
@@ skipping 66 matching lines @@
   filter_collection_->AddAudioDecoder(new media::FFmpegAudioDecoder(
       message_loop_factory_->GetMessageLoop("AudioDecoderThread")));
   filter_collection_->AddVideoDecoder(new media::FFmpegVideoDecoder(
       message_loop_factory_->GetMessageLoop("VideoDecoderThread"), NULL));
   filter_collection_->AddAudioRenderer(new media::NullAudioRenderer());
 
   return true;
 }
 
 WebMediaPlayerImpl::~WebMediaPlayerImpl() {
+  media_log_->AddEventOfType(media::MediaLogEvent::DESTROY);

[acolwell GONE FROM CHROMIUM, 2011/08/03 16:31:37]

Is this intended to indicate when destruction has started or after it has
completed. I'm only asking because Destroy() may cause log events to be
generated during pipeline shutdown.

[Scott Franklin, 2011/08/03 20:55:04]

Starting destruction (I'll change it to DESTROYING).

Getting a final DESTRUCTED message will be a somewhat difficult process because
the teardown is happening across multiple threads. Perhaps I can force the
destruction of RenderMediaLog on the main render thread and log it there?
Either way, that's a topic for a different patch.

   Destroy();
 
   // Finally tell the |main_loop_| we don't want to be notified of destruction
   // event.
   if (main_loop_) {
     main_loop_->RemoveDestructionObserver(this);
   }
 }
 
 void WebMediaPlayerImpl::load(const WebKit::WebURL& url) {
@@ skipping 17 matching lines @@
   setPreload(GetClient()->preload());
 
   // Initialize the pipeline.
   SetNetworkState(WebKit::WebMediaPlayer::Loading);
   SetReadyState(WebKit::WebMediaPlayer::HaveNothing);
   pipeline_->Start(
       filter_collection_.release(),
       url.spec(),
       NewCallback(proxy_.get(),
                   &WebMediaPlayerImpl::Proxy::PipelineInitializationCallback));
+
+  media_log_->Load(url.spec());
 }
 
 void WebMediaPlayerImpl::cancelLoad() {
   DCHECK(MessageLoop::current() == main_loop_);
 }
 
 void WebMediaPlayerImpl::play() {
   DCHECK(MessageLoop::current() == main_loop_);
 
   paused_ = false;
   pipeline_->SetPlaybackRate(playback_rate_);
+
+  media_log_->AddEventOfType(media::MediaLogEvent::PLAY);
 }
 
 void WebMediaPlayerImpl::pause() {
   DCHECK(MessageLoop::current() == main_loop_);
 
   paused_ = true;
   pipeline_->SetPlaybackRate(0.0f);
   paused_time_ = pipeline_->GetCurrentTime();
+
+  media_log_->AddEventOfType(media::MediaLogEvent::PAUSE);
 }
 
 bool WebMediaPlayerImpl::supportsFullscreen() const {
   DCHECK(MessageLoop::current() == main_loop_);
   return true;
 }
 
 bool WebMediaPlayerImpl::supportsSave() const {
   DCHECK(MessageLoop::current() == main_loop_);
   return true;
@@ skipping 537 matching lines @@
   }
 }
 
 WebKit::WebMediaPlayerClient* WebMediaPlayerImpl::GetClient() {
   DCHECK(MessageLoop::current() == main_loop_);
   DCHECK(client_);
   return client_;
 }
 
 }  // namespace webkit_glue