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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 FaderReader.h
* @ingroup fx
* Defines the FaderReader class as well as the two fading types.
*/
#include "fx/EffectReader.h"
AUD_NAMESPACE_BEGIN
/// Fading types.
enum FadeType
{
FADE_IN,
FADE_OUT
};
/**
* This class fades another reader.
* If the fading type is FADE_IN, everything before the fading start will be
* silenced, for FADE_OUT that's true for everything after fading ends.
*/
class AUD_API FaderReader : public EffectReader
{
private:
/**
* The fading type.
*/
const FadeType m_type;
/**
* The fading start.
*/
const float m_start;
/**
* The fading length.
*/
const float m_length;
// delete copy constructor and operator=
FaderReader(const FaderReader&) = delete;
FaderReader& operator=(const FaderReader&) = delete;
public:
/**
* Creates a new fader reader.
* \param reader The reader that this effect is applied on.
* \param type The fading type.
* \param start The time where fading should start in seconds.
* \param length How long fading should last in seconds.
*/
FaderReader(std::shared_ptr<IReader> reader, FadeType type,
float start,float length);
virtual void read(int& length, bool& eos, sample_t* buffer);
};
AUD_NAMESPACE_END
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