Support Opus Ambisonics playback

media/base/output_device_info.h

 // Copyright 2016 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 MEDIA_BASE_OUTPUT_DEVICE_INFO_H_
 #define MEDIA_BASE_OUTPUT_DEVICE_INFO_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 30 matching lines @@
   OutputDeviceInfo(const std::string& device_id,
                    OutputDeviceStatus device_status,
                    const AudioParameters& output_params);
 
   OutputDeviceInfo(const OutputDeviceInfo& other);
 
   OutputDeviceInfo& operator=(const OutputDeviceInfo&);
 
   ~OutputDeviceInfo();
 
+  void SetIsWebAudioSource(bool value);

[DaleCurtis, 2017/04/06 19:44:42]

Sorry skimmed review due to time yesterday. I see you're now doing what I
thought you were. I don't think we need this though. Shouldn't it be enough to
receive DISCRETE layout from WebAudio?

[flim-chromium, 2017/04/07 22:01:43]

That makes sense, done.

+
   // Returns the device ID.
   const std::string& device_id() const { return device_id_; }
 
   // Returns the status of output device.
   OutputDeviceStatus device_status() const { return device_status_; }
 
   // Returns the device's audio output parameters.
   // The return value is undefined if the device status (as returned by
   // device_status()) is different from OUTPUT_DEVICE_STATUS_OK.
   const AudioParameters& output_params() const { return output_params_; };
 
+  // Returns whether a webaudio source is attached to the HTML media element.
+  bool is_webaudio_source() const { return is_webaudio_source_; };
+
   // Returns a human-readable string describing |*this|.  For debugging & test
   // output only.
   std::string AsHumanReadableString() const;
 
  private:
   std::string device_id_;
   OutputDeviceStatus device_status_;
   AudioParameters output_params_;
+  bool is_webaudio_source_;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_OUTPUT_DEVICE_INFO_H_