view trunk/src/Modules/Strobes/ModuleParabola.h @ 690:76f749d29b48

Fix memory leak in CARFAC.

Also get rid of most uses of auto, which tend to hurt readability
unless the type name is particularly long, especially when it masks
pointers.

// Copyright 2007-2010, Thomas Walters
//
// AIM-C: A C++ implementation of the Auditory Image Model
// http://www.acousticscale.org/AIMC
//
// 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.

/*!
 * \file
 * \brief SAI 2003 module - for any output frame rate
 *
 * \author Thomas Walters <[e-mail]>
 * \date created 2007/03/28
 * \version \$Id$
 */

#ifndef AIMC_MODULES_STROBES_PARABOLA_H_
#define AIMC_MODULES_STROBES_PARABOLA_H_

#include <vector>

#include "Support/Module.h"
#include "Support/Parameters.h"
#include "Support/SignalBank.h"

namespace aimc {
using std::vector;
class ModuleParabola : public Module {
 public:
  explicit ModuleParabola(Parameters *params);
  virtual ~ModuleParabola();
  void Process(const SignalBank& input);
 private:
  /*! \brief Prepare the module
   *  \param input Input signal bank
   *  \param output true on success false on failure
   */
  virtual bool InitializeInternal(const SignalBank& input);

  virtual void ResetInternal();


  /*! \brief Number of samples over which the strobe should be decayed to
   *  zero
   */
  int strobe_decay_samples_;

  /*! \brief Current strobe thresholds, one for each bank channel.
   *
   *  This value is decayed over time.
   */
  vector<float> threshold_;

  /*! \brief Signal value at the last strobe, one for each bank channel.
   *
   *  This value is not decayed over time.
   */
  vector<float> last_threshold_;

  /*! \brief Parabola height parameter
   */
  float height_;

  /*! \brief Parabola width paramters
   */
  float parabw_;

  /*! \brief Parabola a value
   */
  vector<float> parab_a_;

  /*! \brief Parabola b value
   */
  vector<float> parab_b_;

  /*! \brief Parabola calculation variable
   */
  vector<float> parab_wnull_;

  /*! \brief Parabola calculation variable
   */
  vector<int> parab_var_samples_;

  /*! \brief Storage for the number of samples since the last strobe
   */
  vector<int> samples_since_last_strobe_;

  vector<float> prev_sample_;
  vector<float> curr_sample_;
  vector<float> next_sample_;

  float alpha_;
  int channel_count_;
  float sample_rate_;
  float strobe_decay_time_;
};
}  // namespace aimc

#endif  // AIMC_MODULES_STROBES_PARABOLA_H_