78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
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/*******************************************************************************
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* Copyright 2009-2016 Jörg Müller
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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#pragma once
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/**
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* @file SineReader.h
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* @ingroup generator
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* The SineReader class.
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*/
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#include "IReader.h"
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AUD_NAMESPACE_BEGIN
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/**
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* This class is used for sine tone playback.
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* The sample rate can be specified, the signal is mono.
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*/
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class AUD_API SineReader : public IReader
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{
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private:
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/**
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* The frequency of the sine wave.
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*/
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float m_frequency;
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/**
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* The current position in samples.
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*/
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int m_position;
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/**
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* The sample rate for the output.
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*/
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const SampleRate m_sampleRate;
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// delete copy constructor and operator=
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SineReader(const SineReader&) = delete;
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SineReader& operator=(const SineReader&) = delete;
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public:
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/**
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* Creates a new reader.
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* \param frequency The frequency of the sine wave.
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* \param sampleRate The output sample rate.
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*/
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SineReader(float frequency, SampleRate sampleRate);
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/**
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* Sets the frequency of the wave.
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* @param frequency The new frequency in Hertz.
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*/
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void setFrequency(float frequency);
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virtual bool isSeekable() const;
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virtual void seek(int position);
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virtual int getLength() const;
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virtual int getPosition() const;
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virtual Specs getSpecs() const;
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virtual void read(int& length, bool& eos, sample_t* buffer);
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};
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AUD_NAMESPACE_END
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