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111 lines
3.0 KiB
111 lines
3.0 KiB
7 years ago
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/*
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* ParameterAutomation.cpp
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*
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* Created on: April 14, 2018
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* Author: slascos
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.*
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "LibBasicFunctions.h"
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using namespace BAGuitar;
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namespace BALibrary {
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constexpr int LINEAR_SLOPE = 0;
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template <class T>
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ParameterAutomation<T>::ParameterAutomation(T startValue, T endValue, float durationMilliseconds, Function function)
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{
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reconfigure(startValue, endValue, calcAudioSamples(durationMilliseconds), function);
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}
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template <class T>
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ParameterAutomation<T>::ParameterAutomation(T startValue, T endValue, size_t durationSamples, Function function)
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{
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reconfigure(startValue, endValue, durationSamples, function);
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}
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template <class T>
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void ParameterAutomation<T>::reconfigure(T startValue, T endValue, float durationMilliseconds, Function function)
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{
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reconfigure(startValue, endValue, calcAudioSamples(durationMilliseconds), function);
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}
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template <class T>
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void ParameterAutomation<T>::reconfigure(T startValue, T endValue, size_t durationSamples, Function function)
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{
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m_function = function;
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m_startValue = startValue;
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m_endValue = endValue;
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m_currentValueX = startValue;
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m_duration = durationSamples;
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// Pre-compute any necessary coefficients
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switch(m_function) {
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case Function::EXPONENTIAL :
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break;
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case Function::LOGARITHMIC :
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break;
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case Function::PARABOLIC :
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break;
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case Function::LOOKUP_TABLE :
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break;
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// Default will be same as LINEAR
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case Function::LINEAR :
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default :
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m_coeffs[LINEAR_SLOPE] = (endValue - startValue) / static_cast<T>(m_duration);
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break;
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}
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}
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template <class T>
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void ParameterAutomation<T>::trigger()
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{
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m_currentValueX = m_startValue;
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m_running = true;
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}
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template <class T>
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T ParameterAutomation<T>::getNextValue()
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{
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switch(m_function) {
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case Function::EXPONENTIAL :
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break;
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case Function::LOGARITHMIC :
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break;
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case Function::PARABOLIC :
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break;
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case Function::LOOKUP_TABLE :
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break;
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// Default will be same as LINEAR
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case Function::LINEAR :
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default :
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// output = m_currentValueX + slope
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m_currentValueX += m_coeffs[LINEAR_SLOPE];
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if (m_currentValueX >= m_endValue) {
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m_currentValueX = m_endValue;
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m_running = false;
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}
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break;
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}
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return m_currentValueX;
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}
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}
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