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https://github.com/libretro/scummvm.git
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115 lines
3.9 KiB
C++
115 lines
3.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "graphics/scaler/dotmatrix.h"
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#include "graphics/scaler.h"
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DotMatrixPlugin::DotMatrixPlugin() {
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_factor = 2;
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_factors.push_back(2);
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}
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void DotMatrixPlugin::initialize(const Graphics::PixelFormat &format) {
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ScalerPluginObject::initialize(format);
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if (format.bytesPerPixel == 2) {
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uint16 *lookup16 = (uint16 *)lookup;
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lookup16[0] = lookup16[10] = format.RGBToColor(0, 63, 0);
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lookup16[1] = lookup16[11] = format.RGBToColor(0, 0, 63);
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lookup16[2] = lookup16[8] = format.RGBToColor(63, 0, 0);
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lookup16[4] = lookup16[6] =
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lookup16[12] = lookup16[14] = format.RGBToColor(63, 63, 63);
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lookup16[3] = lookup16[5] = lookup16[7] =
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lookup16[9] = lookup16[13] =
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lookup16[15] = lookup16[16] = format.RGBToColor(0, 0, 0);
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} else {
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uint32 *lookup32 = (uint32 *)lookup;
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lookup32[0] = lookup32[10] = format.ARGBToColor(0, 0, 63, 0);
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lookup32[1] = lookup32[11] = format.ARGBToColor(0, 0, 0, 63);
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lookup32[2] = lookup32[8] = format.ARGBToColor(0, 63, 0, 0);
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lookup32[4] = lookup32[6] =
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lookup32[12] = lookup32[14] = format.ARGBToColor(0, 63, 63, 63);
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lookup32[3] = lookup32[5] = lookup32[7] =
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lookup32[9] = lookup32[13] =
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lookup32[15] = lookup32[16] = format.ARGBToColor(0, 0, 0, 0);
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}
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}
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void DotMatrixPlugin::scaleIntern(const uint8 *srcPtr, uint32 srcPitch,
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uint8 *dstPtr, uint32 dstPitch, int width, int height, int x, int y) {
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if (_format.bytesPerPixel == 2) {
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scaleIntern<uint16>(srcPtr, srcPitch, dstPtr, dstPitch, width, height, x, y);
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} else {
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scaleIntern<uint32>(srcPtr, srcPitch, dstPtr, dstPitch, width, height, x, y);
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}
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}
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uint DotMatrixPlugin::increaseFactor() {
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return _factor;
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}
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uint DotMatrixPlugin::decreaseFactor() {
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return _factor;
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}
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const char *DotMatrixPlugin::getName() const {
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return "dotmatrix";
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}
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const char *DotMatrixPlugin::getPrettyName() const {
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return "DotMatrix";
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}
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template<typename Pixel>
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static inline Pixel DOT(const Pixel *dotmatrix, Pixel c, int j, int i) {
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return c - ((c >> 2) & dotmatrix[((j & 3) << 2) + (i & 3)]);
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}
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template<typename Pixel>
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void DotMatrixPlugin::scaleIntern(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch,
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int width, int height, int x, int y) {
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const Pixel *dotmatrix = (Pixel *)lookup;
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const uint32 nextlineSrc = srcPitch / sizeof(Pixel);
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const Pixel *p = (const Pixel *)srcPtr;
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const uint32 nextlineDst = dstPitch / sizeof(Pixel);
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Pixel *q = (Pixel *)dstPtr;
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int ja = (y * 2) & 3;
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int ia = (x * 2) & 3;
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for (int j = 0, jj = 0; j < height; ++j, jj += 2) {
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for (int i = 0, ii = 0; i < width; ++i, ii += 2) {
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Pixel c = *(p + i);
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*(q + ii) = DOT<Pixel>(dotmatrix, c, jj + ja, ii + ia);
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*(q + ii + 1) = DOT<Pixel>(dotmatrix, c, jj + ja, ii + ia + 1);
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*(q + ii + nextlineDst) = DOT<Pixel>(dotmatrix, c, jj + ja + 1, ii + ia);
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*(q + ii + nextlineDst + 1) = DOT<Pixel>(dotmatrix, c, jj + ja + 1, ii + ia+ 1);
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}
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p += nextlineSrc;
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q += nextlineDst << 1;
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}
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}
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REGISTER_PLUGIN_STATIC(DOTMATRIX, PLUGIN_TYPE_SCALER, DotMatrixPlugin);
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