[Chromecast] Process streams with different post-processing.

chromecast/public/media/media_pipeline_device_params.h

 // 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.
 
 #ifndef CHROMECAST_PUBLIC_MEDIA_MEDIA_PIPELINE_DEVICE_PARAMS_H_
 #define CHROMECAST_PUBLIC_MEDIA_MEDIA_PIPELINE_DEVICE_PARAMS_H_
 
 namespace chromecast {
 class TaskRunner;
 
@@ skipping 37 matching lines @@
         audio_type(kAudioStreamNormal),
         task_runner(task_runner_in) {}
 
   MediaPipelineDeviceParams(MediaSyncType sync_type_in,
                             AudioStreamType audio_type_in,
                             TaskRunner* task_runner_in)
       : sync_type(sync_type_in),
         audio_type(audio_type_in),
         task_runner(task_runner_in) {}
 
+  MediaPipelineDeviceParams(MediaSyncType sync_type_in,
+                            AudioStreamType audio_type_in,
+                            std::string name_in,
+                            TaskRunner* task_runner_in)
+      : sync_type(sync_type_in),
+        audio_type(audio_type_in),
+        name(name_in),
+        task_runner(task_runner_in) {}
+
   const MediaSyncType sync_type;
   const AudioStreamType audio_type;
+  const std::string name;

[tianyuwang1, 2017/02/18 00:17:09]

why not just call this device_id to be consistent with chromium device_id.

[kmackay, 2017/02/19 23:09:09]

This should be last, after task_runner, to preserve ABI compatibility.

[gfhuang, 2017/02/21 20:06:31]

I don't think it will preserve ABI compatibility since the object size is
changed.

And, why do we change from enum to string? as mentioned in the other comments,
public/ used to contain pure .h without .cc

[kmackay, 2017/02/21 20:14:39]

Object size doesn't matter, since we don't pass it by value.

 
   // task_runner allows backend implementations to post tasks to the media
   // thread.  Since all calls from cast_shell into the backend are made on
   // the media thread, this may simplify thread management and safety for
   // some backends.
   TaskRunner* const task_runner;
 };
 
 }  // namespace media
 }  // namespace chromecast
 
 #endif  // CHROMECAST_MEDIA_CMA_BACKEND_MEDIA_PIPELINE_DEVICE_PARAMS_H_