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/* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "graphics/scaler/dotmatrix.h"
#include "graphics/scaler.h"
DotMatrixScaler::DotMatrixScaler(const Graphics::PixelFormat &format) : Scaler(format) {
_factor = 2;
if (format.bytesPerPixel == 2) {
uint16 *lookup16 = (uint16 *)lookup;
lookup16[0] = lookup16[10] = format.RGBToColor(0, 63, 0);
lookup16[1] = lookup16[11] = format.RGBToColor(0, 0, 63);
lookup16[2] = lookup16[8] = format.RGBToColor(63, 0, 0);
lookup16[4] = lookup16[6] =
lookup16[12] = lookup16[14] = format.RGBToColor(63, 63, 63);
lookup16[3] = lookup16[5] = lookup16[7] =
lookup16[9] = lookup16[13] =
lookup16[15] = lookup16[16] = format.RGBToColor(0, 0, 0);
} else {
uint32 *lookup32 = (uint32 *)lookup;
lookup32[0] = lookup32[10] = format.ARGBToColor(0, 0, 63, 0);
lookup32[1] = lookup32[11] = format.ARGBToColor(0, 0, 0, 63);
lookup32[2] = lookup32[8] = format.ARGBToColor(0, 63, 0, 0);
lookup32[4] = lookup32[6] =
lookup32[12] = lookup32[14] = format.ARGBToColor(0, 63, 63, 63);
lookup32[3] = lookup32[5] = lookup32[7] =
lookup32[9] = lookup32[13] =
lookup32[15] = lookup32[16] = format.ARGBToColor(0, 0, 0, 0);
}
}
void DotMatrixScaler::scaleIntern(const uint8 *srcPtr, uint32 srcPitch,
uint8 *dstPtr, uint32 dstPitch, int width, int height, int x, int y) {
if (_format.bytesPerPixel == 2) {
scaleIntern<uint16>(srcPtr, srcPitch, dstPtr, dstPitch, width, height, x, y);
} else {
scaleIntern<uint32>(srcPtr, srcPitch, dstPtr, dstPitch, width, height, x, y);
}
}
uint DotMatrixScaler::increaseFactor() {
return _factor;
}
uint DotMatrixScaler::decreaseFactor() {
return _factor;
}
template<typename Pixel>
static inline Pixel DOT(const Pixel *dotmatrix, Pixel c, int j, int i) {
return c - ((c >> 2) & dotmatrix[((j & 3) << 2) + (i & 3)]);
}
template<typename Pixel>
void DotMatrixScaler::scaleIntern(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
int width, int height, int x, int y) {
const Pixel *dotmatrix = (Pixel *)lookup;
const uint32 nextlineSrc = srcPitch / sizeof(Pixel);
const Pixel *p = (const Pixel *)srcPtr;
const uint32 nextlineDst = dstPitch / sizeof(Pixel);
Pixel *q = (Pixel *)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) {
Pixel c = *(p + i);
*(q + ii) = DOT<Pixel>(dotmatrix, c, jj + ja, ii + ia);
*(q + ii + 1) = DOT<Pixel>(dotmatrix, c, jj + ja, ii + ia + 1);
*(q + ii + nextlineDst) = DOT<Pixel>(dotmatrix, c, jj + ja + 1, ii + ia);
*(q + ii + nextlineDst + 1) = DOT<Pixel>(dotmatrix, c, jj + ja + 1, ii + ia+ 1);
}
p += nextlineSrc;
q += nextlineDst << 1;
}
}
class DotMatrixPlugin final : public ScalerPluginObject {
public:
DotMatrixPlugin();
Scaler *createInstance(const Graphics::PixelFormat &format) const override;
bool canDrawCursor() const override { return false; }
uint extraPixels() const override { return 0; }
const char *getName() const override;
const char *getPrettyName() const override;
};
DotMatrixPlugin::DotMatrixPlugin() {
_factors.push_back(2);
}
Scaler *DotMatrixPlugin::createInstance(const Graphics::PixelFormat &format) const {
return new DotMatrixScaler(format);
}
const char *DotMatrixPlugin::getName() const {
return "dotmatrix";
}
const char *DotMatrixPlugin::getPrettyName() const {
return "DotMatrix";
}
REGISTER_PLUGIN_STATIC(DOTMATRIX, PLUGIN_TYPE_SCALER, DotMatrixPlugin);
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