RAUL 0.8.0

- Main Page
- Modules
- Namespaces
- Classes
- Files

- File List

Quantizer.hpp

    00001 /* This file is part of Raul.
    00002  * Copyright (C) 2007-2009 David Robillard <http://drobilla.net>
    00003  *
    00004  * Raul is free software; you can redistribute it and/or modify it under the
    00005  * terms of the GNU General Public License as published by the Free Software
    00006  * Foundation; either version 2 of the License, or (at your option) any later
    00007  * version.
    00008  *
    00009  * Raul is distributed in the hope that it will be useful, but WITHOUT ANY
    00010  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    00011  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
    00012  *
    00013  * You should have received a copy of the GNU General Public License along
    00014  * with this program; if not, write to the Free Software Foundation, Inc.,
    00015  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
    00016  */
    00017
    00018 #ifndef RAUL_QUANTIZER_HPP
    00019 #define RAUL_QUANTIZER_HPP
    00020
    00021 #include <cmath>
    00022 #include "raul/TimeStamp.hpp"
    00023
    00024 namespace Raul {
    00025
    00029 class Quantizer {
    00030 public:
    00031     inline static TimeStamp quantize(TimeStamp q, TimeStamp t) {
    00032         assert(q.unit() == t.unit());
    00033         // FIXME: Precision problem?  Should probably stay in discrete domain
    00034         const double qd = q.to_double();
    00035         const double td = t.to_double();
    00036         return TimeStamp(t.unit(), (qd > 0) ? lrint(td / qd) * qd : td);
    00037     }
    00038
    00039     inline static double quantize(double q, double t) {
    00040         return (q > 0)
    00041             ? lrint(t / q) * q
    00042             : t;
    00043     }
    00044 };
    00045
    00046
    00047 } // namespace Raul
    00048
    00049 #endif // RAUL_QUANTIZER_HPP