embdrv/lc3/Encoder/TemporalNoiseShaping.hpp

/*
 * TemporalNoiseShaping.hpp
 *
 * Copyright 2021 HIMSA II K/S - www.himsa.com. Represented by EHIMA -
 * www.ehima.com
 *
 * 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 TEMPORAL_NOISE_SHAPING_H_
#define TEMPORAL_NOISE_SHAPING_H_

#include <cstdint>

#include "Datapoints.hpp"
#include "Lc3Config.hpp"

namespace Lc3Enc {

class TemporalNoiseShaping {
 public:
  TemporalNoiseShaping(const Lc3Config& lc3Config_);
  virtual ~TemporalNoiseShaping();

  void registerDatapoints(DatapointContainer* datapoints_);

  void run(const double* const X_S, uint8_t P_BW, uint16_t nbits,
           uint8_t near_nyquist_flag);

  static int8_t nint(double x);

  const Lc3Config& lc3Config;

  uint16_t nbits_TNS;
  double* X_f;
  uint8_t tns_lpc_weighting;
  uint8_t num_tns_filters;
  uint8_t rc_order[2];
  uint8_t rc_i[2 * 8];

 private:
  double rc_q[2 * 8];
  DatapointContainer* datapoints;
};

}  // namespace Lc3Enc

#endif  // TEMPORAL_NOISE_SHAPING_H_