Allow transitioning to HAVE_METADATA before pipeline initialization completes.

media/tools/player_x11/player_x11.cc

 // Copyright (c) 2012 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 <signal.h>
 
 #include <iostream>  // NOLINT
 
 #include "base/at_exit.h"
 #include "base/bind.h"
@@ skipping 79 matching lines @@
     return;
   }
 
   scoped_refptr<media::VideoFrame> video_frame;
   g_video_renderer->GetCurrentFrame(&video_frame);
   if (video_frame)
     paint_cb.Run(video_frame);
   g_video_renderer->PutCurrentFrame(video_frame);
 }
 
+static void OnBufferingState(media::Pipeline::BufferingState buffering_state) {}
+
 // TODO(vrk): Re-enabled audio. (crbug.com/112159)
 bool InitPipeline(const scoped_refptr<base::MessageLoopProxy>& message_loop,
                   const scoped_refptr<media::DataSource>& data_source,
                   const PaintCB& paint_cb,
                   bool /* enable_audio */,
                   scoped_refptr<media::Pipeline>* pipeline,
                   MessageLoop* paint_message_loop,
                   media::MessageLoopFactory* message_loop_factory) {
   // Load media libraries.
   if (!media::InitializeMediaLibrary(FilePath())) {
@@ skipping 23 matching lines @@
   collection->AddVideoRenderer(g_video_renderer);
 
   collection->AddAudioRenderer(
       new media::AudioRendererImpl(new media::NullAudioSink()));
 
   // Create the pipeline and start it.
   *pipeline = new media::Pipeline(message_loop, new media::MediaLog());
   media::PipelineStatusNotification note;
   (*pipeline)->Start(
       collection.Pass(), media::PipelineStatusCB(), media::PipelineStatusCB(),
-      note.Callback());
+      note.Callback(), base::Bind(&OnBufferingState));
 
   // Wait until the pipeline is fully initialized.
   note.Wait();
   if (note.status() != media::PIPELINE_OK) {
     std::cout << "InitPipeline: " << note.status() << std::endl;
     (*pipeline)->Stop(base::Closure());
     return false;
   }
 
   // And start the playback.
@@ skipping 150 matching lines @@
   // Release callback which releases video renderer. Do this before cleaning up
   // X below since the video renderer has some X cleanup duties as well.
   paint_cb.Reset();
 
   XDestroyWindow(g_display, g_window);
   XCloseDisplay(g_display);
   g_audio_manager = NULL;
 
   return 0;
 }