100 lines
3.2 KiB
C++
100 lines
3.2 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.
|
|
*/
|
|
|
|
#include "graphics/scaler/dotmatrix.h"
|
|
#include "graphics/scaler.h"
|
|
|
|
void DotMatrixPlugin::initialize(Graphics::PixelFormat format) {
|
|
lookup[0] = lookup[10] = format.RGBToColor(0, 63, 0);
|
|
lookup[1] = lookup[11] = format.RGBToColor(0, 0, 63);
|
|
lookup[2] = lookup[8] = format.RGBToColor(63, 0, 0);
|
|
lookup[4] = lookup[6] =
|
|
lookup[12] = lookup[14] = format.RGBToColor(63, 63, 63);
|
|
lookup[5] = lookup[7] =
|
|
lookup[9] = lookup[13] =
|
|
lookup[15] = lookup[16] = format.RGBToColor(0, 0, 0);
|
|
_format = format;
|
|
}
|
|
|
|
void DotMatrixPlugin::scale(const uint8 *srcPtr, uint32 srcPitch,
|
|
uint8 *dstPtr, uint32 dstPitch, int width, int height, int x, int y) {
|
|
if (!_doScale) {
|
|
scale1x(srcPtr, srcPitch, dstPtr, dstPitch, width, height, _format.bytesPerPixel);
|
|
return;
|
|
}
|
|
switch (_factor) {
|
|
case 1:
|
|
scale1x(srcPtr, srcPitch, dstPtr, dstPitch, width, height, _format.bytesPerPixel);
|
|
break;
|
|
case 2:
|
|
scaleIntern(srcPtr, srcPitch, dstPtr, dstPitch, width, height, x, y);
|
|
break;
|
|
}
|
|
}
|
|
|
|
uint DotMatrixPlugin::increaseFactor() {
|
|
if (_factor < 2)
|
|
++_factor;
|
|
return _factor;
|
|
}
|
|
|
|
uint DotMatrixPlugin::decreaseFactor() {
|
|
if (_factor > 1)
|
|
--_factor;
|
|
return _factor;
|
|
}
|
|
|
|
const char *DotMatrixPlugin::getName() const {
|
|
return "DotMatrix";
|
|
}
|
|
|
|
static inline uint16 DOT_16(const uint16 *dotmatrix, uint16 c, int j, int i) {
|
|
return c - ((c >> 2) & dotmatrix[((j & 3) << 2) + (i & 3)]);
|
|
}
|
|
|
|
void DotMatrixPlugin::scaleIntern(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
|
|
int width, int height, int x, int y) {
|
|
|
|
const uint16 *dotmatrix = lookup;
|
|
|
|
const uint32 nextlineSrc = srcPitch / sizeof(uint16);
|
|
const uint16 *p = (const uint16 *)srcPtr;
|
|
|
|
const uint32 nextlineDst = dstPitch / sizeof(uint16);
|
|
uint16 *q = (uint16 *)dstPtr;
|
|
|
|
int ja = (y * 2) & 3;
|
|
int ia = (x * 2) & 3;
|
|
|
|
for (int j = 0, jj = 0; j < height; ++j, jj += 2) {
|
|
for (int i = 0, ii = 0; i < width; ++i, ii += 2) {
|
|
uint16 c = *(p + i);
|
|
*(q + ii) = DOT_16(dotmatrix, c, jj + ja, ii + ia);
|
|
*(q + ii + 1) = DOT_16(dotmatrix, c, jj + ja, ii + ia + 1);
|
|
*(q + ii + nextlineDst) = DOT_16(dotmatrix, c, jj + ja + 1, ii + ia);
|
|
*(q + ii + nextlineDst + 1) = DOT_16(dotmatrix, c, jj + ja + 1, ii + ia+ 1);
|
|
}
|
|
p += nextlineSrc;
|
|
q += nextlineDst << 1;
|
|
}
|
|
}
|
|
|
|
REGISTER_PLUGIN_STATIC(DOTMATRIX, PLUGIN_TYPE_SCALER, DotMatrixPlugin);
|