text: /*
   * Copyright (C) 2015 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #pragma once
  
  #include <IVolumeCurvesCollection.h>
  #include <AudioGain.h>
  #include <AudioPort.h>
  #include <AudioPatch.h>
  #include <IOProfile.h>
  #include <DeviceDescriptor.h>
  #include <AudioInputDescriptor.h>
  #include <AudioOutputDescriptor.h>
  #include <AudioPolicyMix.h>
  #include <SoundTriggerSession.h>
  
  namespace android {
  
  /**
   * This interface is an observer that the manager shall implement to allows e.g. the engine
   * to access to policy pillars elements (like output / input descritors collections,
   * HwModule collections, AudioMix, ...
   */
  class AudioPolicyManagerObserver
  {
  public:
      virtual const AudioPatchCollection &getAudioPatches() const = 0;
  
      virtual const SoundTriggerSessionCollection &getSoundTriggerSessionCollection() const = 0;
  
      virtual const AudioPolicyMixCollection &getAudioPolicyMixCollection() const = 0;
  
      virtual const SwAudioOutputCollection &getOutputs() const = 0;
  
      virtual const AudioInputCollection &getInputs() const = 0;
  
      virtual const DeviceVector &getAvailableOutputDevices() const = 0;
  
      virtual const DeviceVector &getAvailableInputDevices() const = 0;
  
      virtual IVolumeCurvesCollection &getVolumeCurves() = 0;
  
      virtual const sp<DeviceDescriptor> &getDefaultOutputDevice() const = 0;
  
  protected:
      virtual ~AudioPolicyManagerObserver() {}
  };
  
  } // namespace android
  