audio/2.0/default/ParametersUtil.h

/*
 * Copyright (C) 2016 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.
 */

#ifndef android_hardware_audio_V2_0_ParametersUtil_H_
#define android_hardware_audio_V2_0_ParametersUtil_H_

#include <functional>
#include <memory>

#include <android/hardware/audio/2.0/types.h>
#include <hidl/HidlSupport.h>
#include <media/AudioParameter.h>

namespace android {
namespace hardware {
namespace audio {
namespace V2_0 {
namespace implementation {

using ::android::hardware::audio::V2_0::ParameterValue;
using ::android::hardware::audio::V2_0::Result;
using ::android::hardware::hidl_string;
using ::android::hardware::hidl_vec;

class ParametersUtil {
  public:
   virtual ~ParametersUtil() = default;
   Result getParam(const char* name, bool* value);
   Result getParam(const char* name, int* value);
   Result getParam(const char* name, String8* value);
   void getParametersImpl(
       const hidl_vec<hidl_string>& keys,
       std::function<void(Result retval,
                          const hidl_vec<ParameterValue>& parameters)>
           cb);
   std::unique_ptr<AudioParameter> getParams(const AudioParameter& keys);
   Result setParam(const char* name, bool value);
   Result setParam(const char* name, int value);
   Result setParam(const char* name, const char* value);
   Result setParametersImpl(const hidl_vec<ParameterValue>& parameters);
   Result setParams(const AudioParameter& param);

  protected:
    virtual char* halGetParameters(const char* keys) = 0;
    virtual int halSetParameters(const char* keysAndValues) = 0;
};

}  // namespace implementation
}  // namespace V2_0
}  // namespace audio
}  // namespace hardware
}  // namespace android

#endif  // android_hardware_audio_V2_0_ParametersUtil_H_