source_parameters_manager.h

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/*

Copyright 2018 Google Inc. 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.

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 RESONANCE_AUDIO_GRAPH_SOURCE_PARAMETERS_MANAGER_H_

#define RESONANCE_AUDIO_GRAPH_SOURCE_PARAMETERS_MANAGER_H_

#include <functional>

#include <unordered_map>

#include "base/constants_and_types.h"

#include "base/source_parameters.h"

namespace vraudio {

// Class that manages the corresponding parameters of each registered source.

class SourceParametersManager {

 public:

  // Alias for the parameters process closure type.

  using Process = std::function<void(SourceParameters*)>;

  // Registers new source parameters for given |source_id|.

//

  // @param source_id Source id.

  void Register(SourceId source_id);

  // Unregisters the source parameters for given |source_id|.

//

  // @param source_id Source id.

  void Unregister(SourceId source_id);

  // Returns read-only source parameters for given |source_id|.

//

  // @param source_id Source id.

  // @return Read-only source parameters, nullptr if |source_id| not found.

  const SourceParameters* GetParameters(SourceId source_id) const;

  // Returns mutable source parameters for given |source_id|.

//

  // @param source_id Source id.

  // @return Mutable source parameters, nullptr if |source_id| not found.

  SourceParameters* GetMutableParameters(SourceId source_id);

  // Executes given |process| for the parameters of each registered source.

//

  // @param process Parameters processing method.

  void ProcessAllParameters(const Process& process);

 private:

  // Registered source parameters.

  std::unordered_map<SourceId, SourceParameters> parameters_;

};

}  // namespace vraudio

#endif  // RESONANCE_AUDIO_GRAPH_SOURCE_PARAMETERS_MANAGER_H_