Resampler.h

/*
 * This file is part of libsidplayfp, a SID player engine.
 *
 * Copyright 2011-2013 Leandro Nini <drfiemost@users.sourceforge.net>
 * Copyright 2007-2010 Antti Lankila
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
 
#ifndef RESAMPLER_H
#define RESAMPLER_H
 
namespace reSIDfp
{
 
class Resampler
{
protected:
    virtual int output() const = 0;
 
    Resampler() {}
 
public:
    virtual ~Resampler() {}
 
    virtual bool input(int sample) = 0;
 
    short getOutput() const
    {
        int value = output();
 
        // Clip signed integer value into the [-32768,32767] range.
        if (value < -32768) value = -32768;
        if (value > 32767) value = 32767;
 
        return value;
    }
 
    virtual void reset() = 0;
};
 
} // namespace reSIDfp
 
#endif