text: /*
   * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License").
   * You may not use this file except in compliance with the License.
   * A copy of the License is located at
   *
   *     http://aws.amazon.com/apache2.0/
   *
   * or in the "license" file accompanying this file. This file 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.
   */
  
  #ifndef ACSDKEQUALIZERINTERFACES_EQUALIZERINTERFACE_H_
  #define ACSDKEQUALIZERINTERFACES_EQUALIZERINTERFACE_H_
  
  #include "EqualizerTypes.h"
  
  namespace alexaClientSDK {
  namespace acsdkEqualizerInterfaces {
  
  /**
   * Interface performing the actual equalization of the audio.
   */
  class EqualizerInterface {
  public:
      /**
       * Destructor.
       */
      virtual ~EqualizerInterface() = default;
  
      /**
       * Changes the equalization parameters for the audio.
       *
       * @param bandLevelMap EQ bands and their levels to be applied. Levels for all bands supported must be provided.
       */
      virtual void setEqualizerBandLevels(EqualizerBandLevelMap bandLevelMap) = 0;
  
      /**
       * Returns the minimum band level (dB) supported by this equalizer.
       *
       * @return The minimum band level (dB) supported by this equalizer.
       */
      virtual int getMinimumBandLevel() = 0;
  
      /**
       * Returns the maximum band level (dB) supported by this equalizer.
       *
       * @return The maximum band level (dB) supported by this equalizer.
       */
      virtual int getMaximumBandLevel() = 0;
  };
  
  }  // namespace acsdkEqualizerInterfaces
  }  // namespace alexaClientSDK
  
  #endif  // ACSDKEQUALIZERINTERFACES_EQUALIZERINTERFACE_H_
  