Initial commit

engines/titanic/support/image_decoders.cpp

@@ -0,0 +1,81 @@
+/* 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/system.h"
+#include "titanic/support/image_decoders.h"
+
+namespace Titanic {
+
+void CJPEGDecode::decode(OSVideoSurface &surface, const CString &name) {
+	// Open up the resource
+	StdCWadFile file;
+	file.open(name);
+
+	// Use the ScummVM decoder to decode it
+	setOutputPixelFormat(g_system->getScreenFormat());
+	loadStream(*file.readStream());
+	const Graphics::Surface *srcSurf = getSurface();
+
+	// Resize the surface if necessary
+	if (!surface.hasSurface() || surface.getWidth() != srcSurf->w
+			|| surface.getHeight() != srcSurf->h)
+		surface.recreate(srcSurf->w, srcSurf->h, 16);
+
+	// Copy the decoded surface
+	surface.lock();
+
+	assert(srcSurf->format == surface._rawSurface->format);
+
+	Common::copy((const byte *)srcSurf->getPixels(), (const byte *)srcSurf->getPixels() +
+		surface.getPitch() * surface.getHeight(), (byte *)surface._rawSurface->getPixels());
+
+	surface.unlock();
+}
+
+/*------------------------------------------------------------------------*/
+
+void CTargaDecode::decode(OSVideoSurface &surface, const CString &name) {
+	// Open up the resource
+	StdCWadFile file;
+	file.open(name);
+
+	// Use the ScucmmVM deoder to decode it
+	loadStream(*file.readStream());
+	const Graphics::Surface *srcSurf = getSurface();
+
+	// Resize the surface if necessary
+	if (!surface.hasSurface() || surface.getWidth() != srcSurf->w
+			|| surface.getHeight() != srcSurf->h)
+		surface.recreate(srcSurf->w, srcSurf->h, 16);
+
+	// Convert the decoded surface to the correct pixel format, and then copy it over
+	surface.lock();
+	Graphics::Surface *convertedSurface = srcSurf->convertTo(surface._rawSurface->format);
+
+	Common::copy((byte *)convertedSurface->getPixels(), (byte *)convertedSurface->getPixels() +
+		surface.getPitch() * surface.getHeight(), (byte *)surface._rawSurface->getPixels());
+
+	convertedSurface->free();
+	delete convertedSurface;
+	surface.unlock();
+}
+
+} // End of namespace Titanic