scummvm/graphics/scaler/sai.cpp

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2012-05-25 15:27:38 -04:00
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*/
#include "graphics/scaler/sai.h"
#include "graphics/scaler.h"
void SAIPlugin::initialize(Graphics::PixelFormat format) {
_format = format;
}
void SAIPlugin::deinitialize() {
//DestroyScalers();
}
void SAIPlugin::scale(const uint8 *srcPtr, uint32 srcPitch,
uint8 *dstPtr, uint32 dstPitch, int width, int height, int x, int y) {
if (!_doScale) {
Normal1x(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
return;
}
switch (_factor) {
case 1:
Normal1x(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
break;
case 2:
_2xSaI(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
break;
}
}
int SAIPlugin::increaseFactor() {
if (_factor < 2)
++_factor;
return _factor;
}
int SAIPlugin::decreaseFactor() {
if (_factor > 1)
--_factor;
return _factor;
}
const char *SAIPlugin::getName() const {
return "SAI";
}
REGISTER_PLUGIN_STATIC(SAI, PLUGIN_TYPE_SCALER, SAIPlugin);