[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;

[gfhuang, 2017/02/17 18:27:21]

This public change will break OEM cast updates and requires a full system
update.

Please either find a different design, 
or if necessary, call for a full system update agreement with leads.

[bshaya, 2017/02/17 19:05:13]

Yes. wzhong supports adding this to 1.23. Vendors should not need to change any
code as a result.

[kmackay, 2017/02/17 19:40:53]

Why does it require a system update? It should be ABI compatible.

 
   // 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_