view trunk/src/Modules/SAI/ModuleSAI.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 2006-2010, 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 module
 */

/*! \author Thomas Walters <[e-mail]>
 *  \date created 2007/08/29
 *  \version \$Id$
 */
#ifndef AIMC_MODULES_SAI_SAI_H_
#define AIMC_MODULES_SAI_SAI_H_

#include <vector>

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

namespace aimc {
using std::vector;
class ModuleSAI : public Module {
 public:
  explicit ModuleSAI(Parameters *parameters);
  virtual ~ModuleSAI();
  void Process(const SignalBank &input);

 private:
  /*! \brief Prepare the module
   *  \param input Input signal bank
   *  \param output true on success false on failure
   */
  bool InitializeInternal(const SignalBank &input);

  virtual void ResetInternal();

  /*! \brief Temporary buffer for constructing the current SAI frame
   */
  SignalBank sai_temp_;

  /*! \brief List of strobes for each channel
   */
  vector<StrobeList> active_strobes_;

  /*! \brief Buffer decay parameter
   */
  float buffer_memory_decay_;

  /*! \brief Sample index of minimum strobe delay
   */
  int min_strobe_delay_idx_;

  /*! \brief Sample index of maximum strobe delay
   */
  int max_strobe_delay_idx_;

  /*! \brief Factor with which the SAI should be decayed
   */
  float sai_decay_factor_;

  /*! \brief Precomputed 1/n^alpha values for strobe weighting
   */
  vector<float> strobe_weights_;

  /*! \brief Next Strobe for each channels
   */
  vector<int> next_strobes_;

  float strobe_weight_alpha_;

  /*! \brief The maximum number strobes that can be active at the same time.
   *
   */
  int max_concurrent_strobes_;

  int fire_counter_;

  /*! \brief Period in milliseconds between output frames
   */
  float frame_period_ms_;
  int frame_period_samples_;

  float min_delay_ms_;
  float max_delay_ms_;
  int channel_count_;
};
}  // namespace aimc

#endif  // AIMC_MODULES_SAI_SAI_H_