CmaMediaPipelineClient to watch media pipeline status

chromecast/browser/media/media_pipeline_host.cc

 // Copyright 2014 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 "chromecast/browser/media/media_pipeline_host.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 48 matching lines @@
     const CreateDeviceComponentsCB& create_device_components_cb) {
   DCHECK(thread_checker_.CalledOnValidThread());
   media_pipeline_.reset(new MediaPipelineImpl());
   task_runner_.reset(new TaskRunnerImpl());
   MediaPipelineDeviceParams::MediaSyncType sync_type =
       (load_type == kLoadTypeMediaStream)
           ? MediaPipelineDeviceParams::kModeIgnorePts
           : MediaPipelineDeviceParams::kModeSyncPts;
   MediaPipelineDeviceParams default_parameters(sync_type, task_runner_.get());
 
+  media_pipeline_->SetClient(client);
   media_pipeline_->Initialize(
       load_type, create_device_components_cb.Run(default_parameters).Pass());
-  media_pipeline_->SetClient(client);
 }
 
 void MediaPipelineHost::SetAvPipe(
     TrackId track_id,
     scoped_ptr<base::SharedMemory> shared_mem,
     const base::Closure& pipe_read_activity_cb,
     const base::Closure& av_pipe_set_cb) {
   DCHECK(thread_checker_.CalledOnValidThread());
   CHECK(track_id == kAudioTrackId || track_id == kVideoTrackId);
 
@@ skipping 89 matching lines @@
   if (it == media_track_map_.end())
     return;
 
   MediaTrackHost* media_track_host = it->second;
   if (!media_track_host->pipe_write_cb.is_null())
     media_track_host->pipe_write_cb.Run();
 }
 
 }  // namespace media
 }  // namespace chromecast