83 lines
2.6 KiB
C++
83 lines
2.6 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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/*
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* This code is based on Broken Sword 2.5 engine
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*
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* Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
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*
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* Licensed under GNU GPL v2
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*
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*/
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#include "common/memstream.h"
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#include "sword25/gfx/image/image.h"
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#include "sword25/gfx/image/imgloader.h"
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#include "graphics/pixelformat.h"
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#include "graphics/surface.h"
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#include "image/png.h"
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namespace Sword25 {
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bool ImgLoader::decodePNGImage(const byte *fileDataPtr, uint fileSize, Graphics::Surface *dest) {
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assert(dest);
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Common::MemoryReadStream *fileStr = new Common::MemoryReadStream(fileDataPtr, fileSize, DisposeAfterUse::NO);
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::Image::PNGDecoder png;
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if (!png.loadStream(*fileStr)) // the fileStr pointer, and thus pFileData will be deleted after this is done
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error("Error while reading PNG image");
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const Graphics::Surface *sourceSurface = png.getSurface();
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Graphics::Surface *pngSurface = sourceSurface->convertTo(Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0), png.getPalette().data(), png.getPalette().size());
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dest->copyFrom(*pngSurface);
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pngSurface->free();
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delete pngSurface;
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delete fileStr;
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// Signal success
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return true;
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}
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bool ImgLoader::decodeThumbnailImage(const byte *pFileData, uint fileSize, Graphics::Surface *dest) {
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assert(dest);
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const byte *src = pFileData + 4; // skip header
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uint width = READ_LE_UINT16(src); src += 2;
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uint height = READ_LE_UINT16(src); src += 2;
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src++; // version, ignored for now
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dest->create(width, height, Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0));
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uint32 *dst = (uint32 *)dest->getBasePtr(0, 0); // treat as uint32, for pixelformat output
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byte r, g, b;
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for (uint32 i = 0; i < width * height; i++) {
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r = *src++;
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g = *src++;
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b = *src++;
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*dst++ = dest->format.RGBToColor(r, g, b);
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}
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return true;
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}
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} // End of namespace Sword25
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