108 lines
3.0 KiB
C++
108 lines
3.0 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "ultima/ultima4/gfx/imageloader.h"
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#include "common/textconsole.h"
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#include "graphics/surface.h"
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namespace Ultima {
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namespace Ultima4 {
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/*-------------------------------------------------------------------*/
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U4ImageDecoder::U4ImageDecoder(int width, int height, int bpp) : _palette(0) {
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_width = width;
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_height = height;
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_bpp = bpp;
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_surface = nullptr;
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}
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U4ImageDecoder::~U4ImageDecoder() {
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destroy();
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}
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void U4ImageDecoder::destroy() {
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if (_surface) {
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_surface->free();
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delete _surface;
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_surface = nullptr;
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}
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_palette.clear();
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}
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void U4ImageDecoder::setFromRawData(const byte *rawData) {
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int x, y;
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switch (_bpp) {
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case 32:
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case 24:
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case 8:
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_surface->copyRectToSurface(rawData, (_width * _bpp) / 8, 0, 0, _width, _height);
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break;
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case 4:
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for (y = 0; y < _height; y++) {
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for (x = 0; x < _width; x += 2) {
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_surface->setPixel(x, y, rawData[(y * _width + x) / 2] >> 4);
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_surface->setPixel(x + 1, y, rawData[(y * _width + x) / 2] & 0x0f);
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}
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}
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break;
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case 1:
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for (y = 0; y < _height; y++) {
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for (x = 0; x < _width; x += 8) {
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_surface->setPixel(x + 0, y, (rawData[(y * _width + x) / 8] >> 7) & 0x01);
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_surface->setPixel(x + 1, y, (rawData[(y * _width + x) / 8] >> 6) & 0x01);
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_surface->setPixel(x + 2, y, (rawData[(y * _width + x) / 8] >> 5) & 0x01);
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_surface->setPixel(x + 3, y, (rawData[(y * _width + x) / 8] >> 4) & 0x01);
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_surface->setPixel(x + 4, y, (rawData[(y * _width + x) / 8] >> 3) & 0x01);
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_surface->setPixel(x + 5, y, (rawData[(y * _width + x) / 8] >> 2) & 0x01);
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_surface->setPixel(x + 6, y, (rawData[(y * _width + x) / 8] >> 1) & 0x01);
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_surface->setPixel(x + 7, y, (rawData[(y * _width + x) / 8] >> 0) & 0x01);
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}
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}
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break;
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default:
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error("invalid bits-per-pixel (bpp): %d", _bpp);
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}
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}
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Graphics::PixelFormat U4ImageDecoder::getPixelFormatForBpp() const {
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switch (_bpp) {
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case 1:
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case 4:
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case 8:
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return Graphics::PixelFormat::createFormatCLUT8();
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case 24:
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return Graphics::PixelFormat::createFormatRGB24();
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case 32:
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return Graphics::PixelFormat::createFormatRGBA32();
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default:
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error("invalid bits-per-pixel (bpp): %d", _bpp);
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}
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}
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} // End of namespace Ultima4
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} // End of namespace Ultima
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