mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-25 03:07:06 +00:00
77 lines
2.0 KiB
C
77 lines
2.0 KiB
C
/* 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.
|
|
*
|
|
* $URL$
|
|
* $Id$
|
|
*/
|
|
|
|
#ifndef GRAPHICS_SCALER_ASPECT_H
|
|
#define GRAPHICS_SCALER_ASPECT_H
|
|
|
|
#include "common/scummsys.h"
|
|
#include "graphics/scaler.h"
|
|
|
|
/**
|
|
* TODO: explain
|
|
*/
|
|
FORCEINLINE int real2Aspect(int y) {
|
|
return y + (y + 1) / 5;
|
|
}
|
|
|
|
/**
|
|
* TODO: explain
|
|
*/
|
|
FORCEINLINE int aspect2Real(int y) {
|
|
return (y * 5 + 4) / 6;
|
|
}
|
|
|
|
/**
|
|
* TODO: explain
|
|
*/
|
|
void makeRectStretchable(int &x, int &y, int &w, int &h);
|
|
|
|
/**
|
|
* TODO: explain
|
|
*/
|
|
int stretch200To240(uint8 *buf,
|
|
uint32 pitch,
|
|
int width,
|
|
int height,
|
|
int srcX,
|
|
int srcY,
|
|
int origSrcY);
|
|
|
|
|
|
/**
|
|
* This filter (up)scales the source image vertically by a factor of 6/5.
|
|
* For example, a 320x200 image is scaled to 320x240.
|
|
*
|
|
* The main difference to the code in graphics/scaler/aspect.cpp is the
|
|
* out-of-place operation, omitting a straight blit step the sdl backend
|
|
* does. Also, tests show unaligned access errors with the stock aspect scaler.
|
|
*/
|
|
DECLARE_SCALER(Normal1xAspect);
|
|
|
|
#ifdef USE_ARM_SCALER_ASM
|
|
DECLARE_SCALER(Normal2xAspect);
|
|
#endif
|
|
|
|
#endif
|