annotate src/Support/SignalBank.cc @ 611:0fbaf443ec82

Carfac C++ revision 3, indluding more style improvements. The output structs are now classes again, and have separate storage methods for each output structure along with flags in the Run and RunSegment methods to allow for only storing NAPs if desired.

// Copyright 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
 */

/*! \author: Thomas Walters <[e-mail]>
 *  \date 2010/01/23
 *  \version \$Id$
 */

#include "Support/SignalBank.h"

namespace aimc {
using std::deque;
using std::vector;

SignalBank::SignalBank() {
  sample_rate_ = 0.0f;
  start_time_ = 0;
  channel_count_ = 0;
  buffer_length_ = 0;
  initialized_ = false;
}

SignalBank::~SignalBank() {
}

bool SignalBank::Initialize(int channel_count,
                            int signal_length,
                            float sample_rate) {
  if (channel_count < 1)
    return false;
  if (signal_length < 1)
    return false;
  if (sample_rate < 0.0f)
    return false;

  start_time_ = 0;
  sample_rate_ = sample_rate;
  buffer_length_ = signal_length;
  channel_count_ = channel_count;
  signals_.resize(channel_count_);
  strobes_.resize(channel_count_);
  centre_frequencies_.resize(channel_count_, 0.0f);
  for (int i = 0; i < channel_count_; ++i) {
    signals_[i].resize(buffer_length_, 0.0f);
  }
  initialized_ = true;
  return true;
}

bool SignalBank::Initialize(const SignalBank &input) {
  if (input.channel_count() < 1)
    return false;
  if (input.buffer_length() < 1)
    return false;
  if (input.sample_rate() < 0.0f)
    return false;

  start_time_ = input.start_time();
  sample_rate_ = input.sample_rate();
  buffer_length_ = input.buffer_length();
  channel_count_ = input.channel_count();

  signals_.resize(channel_count_);
  strobes_.resize(channel_count_);

  centre_frequencies_.resize(channel_count_, 0.0f);
  for (int i = 0; i < channel_count_; ++i) {
    centre_frequencies_[i] = input.centre_frequency(i);
  }

  for (int i = 0; i < channel_count_; ++i) {
    signals_[i].resize(buffer_length_, 0.0f);
    strobes_[i].resize(0);
  }
  initialized_ = true;
  return true;
}

void SignalBank::Clear() {
  for (int i = 0; i < channel_count_; ++i) {
    signals_[i].assign(buffer_length_, 0.0f);
    strobes_[i].resize(0);
  }
}

bool SignalBank::Validate() const {
  if (sample_rate_ <= 0.0f)
    return false;

  if (static_cast<int>(signals_.size()) < 1)
    return false;

  if (static_cast<int>(signals_.size()) != channel_count_)
    return false;

  if (static_cast<int>(strobes_.size()) != channel_count_)
    return false;

  for (int i = 0; i < channel_count_; ++i) {
    if (static_cast<int>(signals_[i].size()) != buffer_length_)
      return false;
  }
  return true;
}

int SignalBank::strobe(int channel, int index) const {
  return strobes_[channel][index];
}

int SignalBank::strobe_count(int channel) const {
  return strobes_[channel].size();
}

void SignalBank::AddStrobe(int channel, int time) {
  strobes_[channel].push_back(time);
}

void SignalBank::ResetStrobes(int channel) {
  strobes_[channel].resize(0);
}

float SignalBank::sample_rate() const {
  return sample_rate_;
}

int SignalBank::buffer_length() const {
  return buffer_length_;
}

int SignalBank::start_time() const {
  return start_time_;
}

void SignalBank::set_start_time(int start_time) {
  start_time_ = start_time;
}

float SignalBank::centre_frequency(int i) const {
  if (i < channel_count_)
    return centre_frequencies_[i];
  else
    return 0.0f;
}

void SignalBank::set_centre_frequency(int i, float cf) {
  if (i < channel_count_)
    centre_frequencies_[i] = cf;
}

bool SignalBank::initialized() const {
  return initialized_;
}

int SignalBank::channel_count() const {
  return channel_count_;
}
}