forked from bartvdbraak/blender
87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
/*
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* $Id$
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*
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* ***** BEGIN LGPL LICENSE BLOCK *****
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*
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* Copyright 2009 Jörg Hermann Müller
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*
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* This file is part of AudaSpace.
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*
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* AudaSpace is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser 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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* AudaSpace 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with AudaSpace. If not, see <http://www.gnu.org/licenses/>.
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*
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* ***** END LGPL LICENSE BLOCK *****
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*/
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#ifndef AUD_SINUSREADER
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#define AUD_SINUSREADER
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#include "AUD_IReader.h"
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class AUD_Buffer;
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/**
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* This class is used for sine tone playback.
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* The output format is in the 16 bit format and stereo, the sample rate can be
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* specified.
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* As the two channels both play the same the output could also be mono, but
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* in most cases this will result in having to resample for output, so stereo
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* sound is created directly.
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*/
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class AUD_SinusReader : public AUD_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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double 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 playback buffer.
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*/
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AUD_Buffer* m_buffer;
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/**
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* The sample rate for the output.
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*/
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AUD_SampleRate m_sampleRate;
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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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AUD_SinusReader(double frequency, AUD_SampleRate sampleRate);
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/**
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* Destroys the reader.
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*/
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virtual ~AUD_SinusReader();
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virtual bool isSeekable();
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virtual void seek(int position);
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virtual int getLength();
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virtual int getPosition();
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virtual AUD_Specs getSpecs();
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virtual AUD_ReaderType getType();
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virtual bool notify(AUD_Message &message);
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virtual void read(int & length, sample_t* & buffer);
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};
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#endif //AUD_SINUSREADER
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