72 lines
1.8 KiB
Plaintext
72 lines
1.8 KiB
Plaintext
/*
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* This file is part of libsidplayfp, a SID player engine.
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*
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* Copyright 2011-2013 Leandro Nini <drfiemost@users.sourceforge.net>
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* Copyright 2007-2010 Antti Lankila
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef RESAMPLER_H
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#define RESAMPLER_H
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namespace reSIDfp
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{
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/**
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* Abstraction of a resampling process. Given enough input, produces output.
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* Constructors take additional arguments that configure these objects.
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*/
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class Resampler
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{
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protected:
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virtual int output() const = 0;
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Resampler() {}
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public:
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virtual ~Resampler() {}
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/**
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* Input a sample into resampler. Output "true" when resampler is ready with new sample.
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*
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* @param sample input sample
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* @return true when a sample is ready
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*/
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virtual bool input(int sample) = 0;
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/**
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* Output a sample from resampler.
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*
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* @return resampled sample
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*/
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short getOutput() const
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{
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int value = output();
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// Clip signed integer value into the [-32768,32767] range.
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if (value < -32768) value = -32768;
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if (value > 32767) value = 32767;
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return value;
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}
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virtual void reset() = 0;
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};
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} // namespace reSIDfp
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#endif
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