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/*******************************************************************************
* Copyright 2009-2016 Jörg Müller
*
* 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.
******************************************************************************/
#pragma once
/**
* @file DynamicIIRFilterReader.h
* @ingroup fx
* The DynamicIIRFilterReader class.
*/
#include "fx/IIRFilterReader.h"
AUD_NAMESPACE_BEGIN
class IDynamicIIRFilterCalculator;
/**
* This class is for dynamic infinite impulse response filters with simple
* coefficients that change depending on the sample rate.
*/
class AUD_API DynamicIIRFilterReader : public IIRFilterReader
{
private:
/**
* The sound for dynamically recalculating filter coefficients.
*/
std::shared_ptr<IDynamicIIRFilterCalculator> m_calculator;
public:
/**
* Creates a new DynamicIIRFilterReader.
* @param reader The reader the filter is applied on.
* @param calculator The IDynamicIIRFilterCalculator that recalculates the filter coefficients.
*/
DynamicIIRFilterReader(std::shared_ptr<IReader> reader,
std::shared_ptr<IDynamicIIRFilterCalculator> calculator);
/**
* The function sampleRateChanged is called whenever the sample rate of the
* underlying reader changes and thus updates the filter coefficients.
* @param rate The new sample rate.
*/
virtual void sampleRateChanged(SampleRate rate);
};
AUD_NAMESPACE_END
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