webrtc/modules/audio_device/dummy/audio_device_dummy.h

/*
 *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_DUMMY_H
#define WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_DUMMY_H

#include <stdio.h>

#include "webrtc/modules/audio_device/audio_device_generic.h"

namespace webrtc {

class AudioDeviceDummy : public AudioDeviceGeneric {
 public:
  AudioDeviceDummy(const int32_t id) {}
  virtual ~AudioDeviceDummy() {}

  // Retrieve the currently utilized audio layer
  int32_t ActiveAudioLayer(
      AudioDeviceModule::AudioLayer& audioLayer) const override;

  // Main initializaton and termination
  InitStatus Init() override;
  int32_t Terminate() override;
  bool Initialized() const override;

  // Device enumeration
  int16_t PlayoutDevices() override;
  int16_t RecordingDevices() override;
  int32_t PlayoutDeviceName(uint16_t index,
                            char name[kAdmMaxDeviceNameSize],
                            char guid[kAdmMaxGuidSize]) override;
  int32_t RecordingDeviceName(uint16_t index,
                              char name[kAdmMaxDeviceNameSize],
                              char guid[kAdmMaxGuidSize]) override;

  // Device selection
  int32_t SetPlayoutDevice(uint16_t index) override;
  int32_t SetPlayoutDevice(
      AudioDeviceModule::WindowsDeviceType device) override;
  int32_t SetRecordingDevice(uint16_t index) override;
  int32_t SetRecordingDevice(
      AudioDeviceModule::WindowsDeviceType device) override;

  // Audio transport initialization
  int32_t PlayoutIsAvailable(bool& available) override;
  int32_t InitPlayout() override;
  bool PlayoutIsInitialized() const override;
  int32_t RecordingIsAvailable(bool& available) override;
  int32_t InitRecording() override;
  bool RecordingIsInitialized() const override;

  // Audio transport control
  int32_t StartPlayout() override;
  int32_t StopPlayout() override;
  bool Playing() const override;
  int32_t StartRecording() override;
  int32_t StopRecording() override;
  bool Recording() const override;

  // Microphone Automatic Gain Control (AGC)
  int32_t SetAGC(bool enable) override;
  bool AGC() const override;

  // Volume control based on the Windows Wave API (Windows only)
  int32_t SetWaveOutVolume(uint16_t volumeLeft, uint16_t volumeRight) override;
  int32_t WaveOutVolume(uint16_t& volumeLeft,
                        uint16_t& volumeRight) const override;

  // Audio mixer initialization
  int32_t InitSpeaker() override;
  bool SpeakerIsInitialized() const override;
  int32_t InitMicrophone() override;
  bool MicrophoneIsInitialized() const override;

  // Speaker volume controls
  int32_t SpeakerVolumeIsAvailable(bool& available) override;
  int32_t SetSpeakerVolume(uint32_t volume) override;
  int32_t SpeakerVolume(uint32_t& volume) const override;
  int32_t MaxSpeakerVolume(uint32_t& maxVolume) const override;
  int32_t MinSpeakerVolume(uint32_t& minVolume) const override;
  int32_t SpeakerVolumeStepSize(uint16_t& stepSize) const override;

  // Microphone volume controls
  int32_t MicrophoneVolumeIsAvailable(bool& available) override;
  int32_t SetMicrophoneVolume(uint32_t volume) override;
  int32_t MicrophoneVolume(uint32_t& volume) const override;
  int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const override;
  int32_t MinMicrophoneVolume(uint32_t& minVolume) const override;
  int32_t MicrophoneVolumeStepSize(uint16_t& stepSize) const override;

  // Speaker mute control
  int32_t SpeakerMuteIsAvailable(bool& available) override;
  int32_t SetSpeakerMute(bool enable) override;
  int32_t SpeakerMute(bool& enabled) const override;

  // Microphone mute control
  int32_t MicrophoneMuteIsAvailable(bool& available) override;
  int32_t SetMicrophoneMute(bool enable) override;
  int32_t MicrophoneMute(bool& enabled) const override;

  // Microphone boost control
  int32_t MicrophoneBoostIsAvailable(bool& available) override;
  int32_t SetMicrophoneBoost(bool enable) override;
  int32_t MicrophoneBoost(bool& enabled) const override;

  // Stereo support
  int32_t StereoPlayoutIsAvailable(bool& available) override;
  int32_t SetStereoPlayout(bool enable) override;
  int32_t StereoPlayout(bool& enabled) const override;
  int32_t StereoRecordingIsAvailable(bool& available) override;
  int32_t SetStereoRecording(bool enable) override;
  int32_t StereoRecording(bool& enabled) const override;

  // Delay information and control
  int32_t SetPlayoutBuffer(const AudioDeviceModule::BufferType type,
                           uint16_t sizeMS) override;
  int32_t PlayoutBuffer(AudioDeviceModule::BufferType& type,
                        uint16_t& sizeMS) const override;
  int32_t PlayoutDelay(uint16_t& delayMS) const override;
  int32_t RecordingDelay(uint16_t& delayMS) const override;

  // CPU load
  int32_t CPULoad(uint16_t& load) const override;

  bool PlayoutWarning() const override;
  bool PlayoutError() const override;
  bool RecordingWarning() const override;
  bool RecordingError() const override;
  void ClearPlayoutWarning() override;
  void ClearPlayoutError() override;
  void ClearRecordingWarning() override;
  void ClearRecordingError() override;

  void AttachAudioBuffer(AudioDeviceBuffer* audioBuffer) override;
};

}  // namespace webrtc

#endif  // WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_DUMMY_H