bsnes/supergameboy/common/resample/resamplerinfo.cpp

62 lines
2.7 KiB
C++
Executable File

/***************************************************************************
* Copyright (C) 2008 by Sindre Aamås *
* aamas@stud.ntnu.no *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License version 2 as *
* published by the Free Software Foundation. *
* *
* 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 version 2 for more details. *
* *
* You should have received a copy of the GNU General Public License *
* version 2 along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "resamplerinfo.h"
#include "chainresampler.h"
#include "hammingsinc.h"
#include "blackmansinc.h"
#include "rectsinc.h"
#include "linint.h"
struct LinintInfo {
static Resampler* create(long inRate, long outRate, std::size_t) { return new Linint<2>(inRate, outRate); }
};
struct RectsincInfo {
static Resampler* create(long inRate, long outRate, std::size_t periodSz) {
ChainResampler *r = new ChainResampler;
r->init<RectSinc>(inRate, outRate, periodSz);
return r;
}
};
struct HammingsincInfo {
static Resampler* create(long inRate, long outRate, std::size_t periodSz) {
ChainResampler *r = new ChainResampler;
r->init<HammingSinc>(inRate, outRate, periodSz);
return r;
}
};
struct BlackmansincInfo {
static Resampler* create(long inRate, long outRate, std::size_t periodSz) {
ChainResampler *r = new ChainResampler;
r->init<BlackmanSinc>(inRate, outRate, periodSz);
return r;
}
};
const ResamplerInfo ResamplerInfo::resamplers[] = {
{ "2-tap linear interpolation", LinintInfo::create },
{ "Rectangular windowed sinc (~20 dB SNR)", RectsincInfo::create },
{ "Hamming windowed sinc (~50 dB SNR)", HammingsincInfo::create },
{ "Blackman windowed sinc (~70 dB SNR)", BlackmansincInfo::create }
};
const unsigned ResamplerInfo::num_ = sizeof(ResamplerInfo::resamplers) / sizeof(ResamplerInfo);