Added support for ETC1 and PVR1 compressed textures contained in KTX, PKM, and PVR files.

Most desktop graphics drivers don't support those formats.

--HG--
branch : minor

src/modules/image/magpie/PKMHandler.h

@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) 2006-2014 LOVE Development Team
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ **/
+
+#ifndef LOVE_IMAGE_MAGPIE_PKM_HANDLER_H
+#define LOVE_IMAGE_MAGPIE_PKM_HANDLER_H
+
+#include "common/config.h"
+#include "CompressedFormatHandler.h"
+
+namespace love
+{
+namespace image
+{
+namespace magpie
+{
+
+/**
+ * Handles PKM files with compressed ETC data inside.
+ **/
+class PKMHandler : public CompressedFormatHandler
+{
+public:
+
+	virtual ~PKMHandler() {}
+
+	// Implements CompressedFormatHandler.
+	virtual bool canParse(const filesystem::FileData *data);
+	virtual uint8 *parse(filesystem::FileData *filedata, std::vector<CompressedData::SubImage> &images, size_t &dataSize, CompressedData::Format &format);
+
+}; // PKMHandler
+
+} // magpie
+} // image
+} // love
+
+#endif // LOVE_IMAGE_MAGPIE_PKM_HANDLER_H