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79 lines
2.6 KiB
C++
79 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
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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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* 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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* 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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*/
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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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#ifndef SWORD25_IMGLOADER_H
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#define SWORD25_IMGLOADER_H
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#include "sword25/kernel/common.h"
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#include "sword25/gfx/graphicengine.h"
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namespace Sword25 {
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/**
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* Class for loading PNG files, and PNG data embedded into savegames.
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*
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* Originally written by Malte Thiesen.
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*/
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class ImgLoader {
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protected:
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ImgLoader() {} // Protected constructor to prevent instances
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public:
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/**
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* Decode an image.
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* @param[in] fileDatePtr pointer to the image data
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* @param[in] fileSize size of the image data in bytes
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* @param[out] pUncompressedData if successful, this is set to a pointer containing the decoded image data
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* @param[out] width if successful, this is set to the width of the image
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* @param[out] height if successful, this is set to the height of the image
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* @param[out] pitch if successful, this is set to the number of bytes per scanline in the image
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* @return false in case of an error
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*
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* @remark The size of the output data equals pitch * height.
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* @remark This function does not free the image buffer passed to it,
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* it is the callers responsibility to do so.
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*/
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static bool decodePNGImage(const byte *pFileData, uint fileSize,
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byte *&pUncompressedData,
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int &width, int &height,
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int &pitch);
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static bool decodeThumbnailImage(const byte *pFileData, uint fileSize,
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byte *&pUncompressedData,
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int &width, int &height,
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int &pitch);
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};
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} // End of namespace Sword25
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#endif
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