Initial commit

engines/sludge/imgloader.cpp

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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/>.
+ *
+ */
+
+#include "common/debug.h"
+
+#include "image/png.h"
+#include "graphics/surface.h"
+
+#include "sludge/fileset.h"
+#include "sludge/hsi.h"
+#include "sludge/imgloader.h"
+#include "sludge/sludge.h"
+
+namespace Sludge {
+
+bool ImgLoader::loadImage(int num, const char *fname, Common::SeekableReadStream *stream, Graphics::Surface *dest, int reserve) {
+	debugC(3, kSludgeDebugGraphics, "Loading image at position: %d", (int)stream->pos());
+
+	bool dumpPng = false;
+
+	int32 start_ptr = stream->pos();
+	if (!loadPNGImage(stream, dest)) {
+		stream->seek(start_ptr);
+		if (!loadHSIImage(stream, dest, reserve)) {
+			return false;
+		} else {
+			if (num != -1) {
+				g_sludge->_resMan->dumpFile(num, Common::String::format("%s%%04d.slx", fname).c_str());
+				dumpPng = true;
+			}
+		}
+	} else {
+		if (num != -1)
+			g_sludge->_resMan->dumpFile(num, Common::String::format("%s%%04d.png", fname).c_str());
+	}
+
+	if (!g_sludge->_dumpScripts)
+		return true;
+
+	if (dumpPng || (fname && num == -1)) {
+		// Debug code to output light map image
+		Common::DumpFile *outFile = new Common::DumpFile();
+		Common::Path outName;
+
+		if (dumpPng)
+			outName = Common::Path(Common::String::format("dumps/%s%04d.png", fname, num));
+		else
+			outName = Common::Path(Common::String::format("dumps/%s.png", fname));
+
+		outFile->open(outName);
+		Image::writePNG(*outFile, *dest);
+		outFile->finalize();
+		outFile->close();
+		delete outFile;
+	}
+	return true;
+}
+
+bool ImgLoader::loadPNGImage(Common::SeekableReadStream *stream, Graphics::Surface *dest, bool checkSig) {
+	::Image::PNGDecoder png;
+
+	// set skip signature
+	if (!checkSig) {
+		png.setSkipSignature(true);
+	}
+
+	if (!png.loadStream(*stream))
+		return false;
+
+	// set value back
+	if (!checkSig) {
+		png.setSkipSignature(false);
+	}
+
+	const Graphics::Surface *sourceSurface = png.getSurface();
+	Graphics::Surface *pngSurface = sourceSurface->convertTo(*g_sludge->getScreenPixelFormat(), png.getPalette().data(), png.getPalette().size());
+	dest->copyFrom(*pngSurface);
+	pngSurface->free();
+	delete pngSurface;
+	return true;
+}
+
+bool ImgLoader::loadHSIImage(Common::SeekableReadStream *stream, Graphics::Surface *dest, int reserve) {
+	HSIDecoder hsiDecoder;
+	hsiDecoder.setReserve(reserve);
+	if (!hsiDecoder.loadStream(*stream)) {
+		return false;
+	}
+	dest->copyFrom(*(hsiDecoder.getSurface()));
+	return true;
+}
+
+} // End of namespace Sludge