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engines/sword25/gfx/image/imgloader.h

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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/>.
+ *
+ */
+
+/*
+ * This code is based on Broken Sword 2.5 engine
+ *
+ * Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
+ *
+ * Licensed under GNU GPL v2
+ *
+ */
+
+#ifndef SWORD25_IMGLOADER_H
+#define SWORD25_IMGLOADER_H
+
+#include "sword25/kernel/common.h"
+#include "sword25/gfx/graphicengine.h"
+
+namespace Graphics {
+struct Surface;
+} // End of namespace Graphics
+
+namespace Sword25 {
+
+/**
+ * Class for loading PNG files, and PNG data embedded into savegames.
+ *
+ * Originally written by Malte Thiesen.
+ */
+class ImgLoader {
+protected:
+	ImgLoader() {}	// Protected constructor to prevent instances
+
+public:
+
+	/**
+	 * Decode an image.
+	 * @param[in] fileDatePtr	pointer to the image data
+	 * @param[in] fileSize		size of the image data in bytes
+	 * @param[out] dest         if successful, surface will contain the image
+	 *                          data (storage is allocated via create).
+	 * @return false in case of an error
+	 *
+	 * @remark This function does not free the image buffer passed to it,
+	 *         it is the callers responsibility to do so.
+	 */
+	static bool decodePNGImage(const byte *pFileData, uint fileSize,
+	                           Graphics::Surface *dest);
+
+	static bool decodeThumbnailImage(const byte *pFileData, uint fileSize,
+	                           Graphics::Surface *dest);
+};
+
+} // End of namespace Sword25
+
+#endif