ash/system/win/audio/tray_audio_delegate_win.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef ASH_SYSTEM_WIN_AUDIO_TRAY_AUDIO_DELEGATE_WIN_H_
   6 #define ASH_SYSTEM_WIN_AUDIO_TRAY_AUDIO_DELEGATE_WIN_H_
   7
   8 #include <audioclient.h>
   9 #include <mmdeviceapi.h>
  10
  11 #include "ash/ash_export.h"
  12 #include "ash/system/audio/tray_audio_delegate.h"
  13 #include "base/compiler_specific.h"
  14 #include "base/win/scoped_comptr.h"
  15
  16 namespace ash {
  17 namespace system {
  18
  19 class ASH_EXPORT TrayAudioDelegateWin : public TrayAudioDelegate {
  20  public:
  21   virtual ~TrayAudioDelegateWin() {}
  22
  23   // Overridden from TrayAudioDelegate.
  24   virtual void AdjustOutputVolumeToAudibleLevel() override;
  25   virtual int GetOutputDefaultVolumeMuteLevel() override;
  26   virtual int GetOutputVolumeLevel() override;
  27   virtual int GetActiveOutputDeviceIconId() override;
  28   virtual bool HasAlternativeSources() override;
  29   virtual bool IsOutputAudioMuted() override;
  30   virtual void SetOutputAudioIsMuted(bool is_muted) override;
  31   virtual void SetOutputVolumeLevel(int level) override;
  32   virtual void SetInternalSpeakerChannelMode(AudioChannelMode mode) override;
  33
  34  private:
  35   base::win::ScopedComPtr<ISimpleAudioVolume> CreateDefaultVolumeControl();
  36 };
  37
  38 }  // namespace system
  39 }  // namespace ash
  40
  41 #endif  // ASH_SYSTEM_WIN_AUDIO_TRAY_AUDIO_DELEGATE_WIN_H_