Pipeline will execute a callback whenever an run-time error has happened.

webkit/glue/webmediaplayer_impl.cc

Index: webkit/glue/webmediaplayer_impl.cc
===================================================================
--- webkit/glue/webmediaplayer_impl.cc	(revision 22059)
+++ webkit/glue/webmediaplayer_impl.cc	(working copy)
@@ -93,6 +93,11 @@
       &WebMediaPlayerImpl::Proxy::PipelineSeekTask));
 }
 
+void WebMediaPlayerImpl::Proxy::PipelineErrorCallback() {
+  render_loop_->PostTask(FROM_HERE, NewRunnableMethod(this,
+      &WebMediaPlayerImpl::Proxy::PipelineErrorTask));
+}
+
 void WebMediaPlayerImpl::Proxy::RepaintTask() {
   DCHECK(MessageLoop::current() == render_loop_);
   {
@@ -119,6 +124,13 @@
   }
 }
 
+void WebMediaPlayerImpl::Proxy::PipelineErrorTask() {
+  DCHECK(MessageLoop::current() == render_loop_);
+  if (webmediaplayer_) {
+    webmediaplayer_->OnPipelineError();
+  }
+}
+
 /////////////////////////////////////////////////////////////////////////////
 // WebMediaPlayerImpl implementation
 
@@ -139,16 +151,21 @@
   // Create the pipeline and its thread.
   if (!pipeline_thread_.Start()) {
     NOTREACHED() << "Could not start PipelineThread";
-  } else {
-    pipeline_ = new media::PipelineImpl(pipeline_thread_.message_loop());
+    return;
   }
 
+  pipeline_ = new media::PipelineImpl(pipeline_thread_.message_loop());
+
   // Also we want to be notified of |main_loop_| destruction.
   main_loop_->AddDestructionObserver(this);
 
   // Creates the proxy.
   proxy_ = new Proxy(main_loop_, this);
 
+  // Sets the pipeline's error reporting callback.
+  pipeline_->SetPipelineErrorCallback(NewCallback(proxy_.get(),
+      &WebMediaPlayerImpl::Proxy::PipelineErrorCallback));
+
   // Add in the default filter factories.
   filter_factory_->AddFactory(media::FFmpegDemuxer::CreateFilterFactory());
   filter_factory_->AddFactory(media::FFmpegAudioDecoder::CreateFactory());
@@ -404,6 +421,38 @@
   }
 }
 
+void WebMediaPlayerImpl::OnPipelineError() {
+  DCHECK(MessageLoop::current() == main_loop_);
+  switch (pipeline_->GetError()) {
+    case media::PIPELINE_OK:
+    case media::PIPELINE_STOPPING:
+      NOTREACHED() << "We shouldn't get called with these non-errors";
+      break;
+
+    case media::PIPELINE_ERROR_INITIALIZATION_FAILED:
+    case media::PIPELINE_ERROR_REQUIRED_FILTER_MISSING:
+    case media::PIPELINE_ERROR_COULD_NOT_RENDER:
+      // Format error.
+      SetNetworkState(WebMediaPlayer::FormatError);
+      break;
+
+    case media::PIPELINE_ERROR_URL_NOT_FOUND:
+    case media::PIPELINE_ERROR_NETWORK:
+    case media::PIPELINE_ERROR_DECODE:
+    case media::PIPELINE_ERROR_ABORT:
+    case media::PIPELINE_ERROR_OUT_OF_MEMORY:
+    case media::PIPELINE_ERROR_READ:
+    case media::PIPELINE_ERROR_AUDIO_HARDWARE:
+    case media::DEMUXER_ERROR_COULD_NOT_OPEN:
+    case media::DEMUXER_ERROR_COULD_NOT_PARSE:
+    case media::DEMUXER_ERROR_NO_SUPPORTED_STREAMS:
+    case media::DEMUXER_ERROR_COULD_NOT_CREATE_THREAD:
+      // Decode error.
+      SetNetworkState(WebMediaPlayer::DecodeError);
+      break;
+  }
+}
+
 void WebMediaPlayerImpl::SetNetworkState(
     WebKit::WebMediaPlayer::NetworkState state) {
   DCHECK(MessageLoop::current() == main_loop_);