Implement HasInputDevices in CrasAudioManager

media/audio/audio_manager_base.h

 // 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.
 
 #ifndef MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_
 #define MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_
 
 #include <string>
 #include <utility>
 
@@ skipping 30 matching lines @@
   // AudioInputStream will be capturing audio currently being played on the
   // default playback device. At the moment this feature is supported only on
   // some platforms. AudioInputStream::Intialize() will return an error on
   // platforms that don't support it. GetInputStreamParameters() must be used
   // to get the parameters of the loopback device before creating a loopback
   // stream, otherwise stream initialization may fail.
   static const char kLoopbackInputDeviceId[];
 
   ~AudioManagerBase() override;
 
+  // AudioManager:
   scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() override;
   scoped_refptr<base::SingleThreadTaskRunner> GetWorkerTaskRunner() override;
-
   base::string16 GetAudioInputDeviceModel() override;
-
   void ShowAudioInputSettings() override;
-
   void GetAudioInputDeviceNames(AudioDeviceNames* device_names) override;
-
   void GetAudioOutputDeviceNames(AudioDeviceNames* device_names) override;
-
   AudioOutputStream* MakeAudioOutputStream(
       const AudioParameters& params,
       const std::string& device_id) override;
-
   AudioInputStream* MakeAudioInputStream(const AudioParameters& params,
                                          const std::string& device_id) override;
-
   AudioOutputStream* MakeAudioOutputStreamProxy(
       const AudioParameters& params,
       const std::string& device_id) override;
 
+  // Listeners will be notified on the GetTaskRunner() task runner.
+  void AddOutputDeviceChangeListener(AudioDeviceListener* listener) override;
+  void RemoveOutputDeviceChangeListener(AudioDeviceListener* listener) override;
+
+  AudioParameters GetDefaultOutputStreamParameters() override;
+  AudioParameters GetOutputStreamParameters(
+      const std::string& device_id) override;
+  AudioParameters GetInputStreamParameters(
+      const std::string& device_id) override;
+  std::string GetAssociatedOutputDeviceID(
+      const std::string& input_device_id) override;
+  scoped_ptr<AudioLog> CreateAudioLog(
+      AudioLogFactory::AudioComponent component) override;
+  void SetHasKeyboardMic() override;
+
+  // AudioManagerBase:
+
   // Called internally by the audio stream when it has been closed.
   virtual void ReleaseOutputStream(AudioOutputStream* stream);
   virtual void ReleaseInputStream(AudioInputStream* stream);
 
   // Creates the output stream for the |AUDIO_PCM_LINEAR| format. The legacy
   // name is also from |AUDIO_PCM_LINEAR|.
   virtual AudioOutputStream* MakeLinearOutputStream(
       const AudioParameters& params) = 0;
 
   // Creates the output stream for the |AUDIO_PCM_LOW_LATENCY| format.
   virtual AudioOutputStream* MakeLowLatencyOutputStream(
       const AudioParameters& params,
       const std::string& device_id) = 0;
 
   // Creates the input stream for the |AUDIO_PCM_LINEAR| format. The legacy
   // name is also from |AUDIO_PCM_LINEAR|.
   virtual AudioInputStream* MakeLinearInputStream(
       const AudioParameters& params, const std::string& device_id) = 0;
 
   // Creates the input stream for the |AUDIO_PCM_LOW_LATENCY| format.
   virtual AudioInputStream* MakeLowLatencyInputStream(
       const AudioParameters& params, const std::string& device_id) = 0;
 
-  // Listeners will be notified on the GetTaskRunner() task runner.
-  void AddOutputDeviceChangeListener(AudioDeviceListener* listener) override;
-  void RemoveOutputDeviceChangeListener(AudioDeviceListener* listener) override;
-
-  AudioParameters GetDefaultOutputStreamParameters() override;
-  AudioParameters GetOutputStreamParameters(
-      const std::string& device_id) override;
-
-  AudioParameters GetInputStreamParameters(
-      const std::string& device_id) override;
-
-  std::string GetAssociatedOutputDeviceID(
-      const std::string& input_device_id) override;
-
-  scoped_ptr<AudioLog> CreateAudioLog(
-      AudioLogFactory::AudioComponent component) override;
-
-  void SetHasKeyboardMic() override;
-
   // Get number of input or output streams.
   int input_stream_count() const { return num_input_streams_; }
   int output_stream_count() const { return num_output_streams_; }
 
  protected:
   AudioManagerBase(AudioLogFactory* audio_log_factory);
 
   // Shuts down the audio thread and releases all the audio output dispatchers
   // on the audio thread.  All audio streams should be freed before Shutdown()
   // is called.  This must be called in the destructor of every AudioManagerBase
@@ skipping 65 matching lines @@
 
   // Proxy for creating AudioLog objects.
   AudioLogFactory* const audio_log_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioManagerBase);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_