IIRFilterReader.h

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/*******************************************************************************
 * Copyright 2009-2015 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

#include "fx/BaseIIRFilterReader.h"

#include <vector>

AUD_NAMESPACE_BEGIN

class AUD_API IIRFilterReader : public BaseIIRFilterReader
{
private:
    std::vector<float> m_a;

    std::vector<float> m_b;

    // delete copy constructor and operator=
    IIRFilterReader(const IIRFilterReader&) = delete;
    IIRFilterReader& operator=(const IIRFilterReader&) = delete;

public:
    IIRFilterReader(std::shared_ptr<IReader> reader, const std::vector<float>& b, const std::vector<float>& a);

    virtual sample_t filter();

    void setCoefficients(const std::vector<float>& b, const std::vector<float>& a);
};

AUD_NAMESPACE_END