Avoid warning and make local variable lower-case.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6000 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CImageLoaderDDS.h

@@ -0,0 +1,215 @@
+// Copyright (C) 2002-2012 Thomas Alten
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+
+#ifndef __C_IMAGE_LOADER_DDS_H_INCLUDED__
+#define __C_IMAGE_LOADER_DDS_H_INCLUDED__
+
+#include "IrrCompileConfig.h"
+
+#if defined(_IRR_COMPILE_WITH_DDS_LOADER_) || defined(_IRR_COMPILE_WITH_DDS_DECODER_LOADER_)
+
+#include "IImageLoader.h"
+
+namespace irr
+{
+namespace video
+{
+
+/* dds pixel format types */
+enum eDDSPixelFormat
+{
+	DDS_PF_ARGB8888,
+	DDS_PF_DXT1,
+	DDS_PF_DXT2,
+	DDS_PF_DXT3,
+	DDS_PF_DXT4,
+	DDS_PF_DXT5,
+	DDS_PF_UNKNOWN
+};
+
+// byte-align structures
+#include "irrpack.h"
+
+/* structures */
+
+struct ddsPixelFormat
+{
+	u32	Size;
+	u32 Flags;
+	u32 FourCC;
+	u32 RGBBitCount;
+	u32	RBitMask;
+	u32 GBitMask;
+	u32 BBitMask;
+	u32	ABitMask;
+} PACK_STRUCT;
+
+
+struct ddsCaps
+{
+	u32		caps1;
+	u32		caps2;
+	u32		caps3;
+	u32		caps4;
+} PACK_STRUCT;
+
+
+struct ddsHeader
+{
+	c8 Magic[4];
+	u32 Size;
+	u32 Flags;
+	u32 Height;
+	u32 Width;
+	u32 PitchOrLinearSize;
+	u32 Depth;
+	u32 MipMapCount;
+	u32 Reserved1[11];
+	ddsPixelFormat PixelFormat;
+	ddsCaps Caps;
+	u32 Reserved2;
+} PACK_STRUCT;
+
+
+#ifdef _IRR_COMPILE_WITH_DDS_DECODER_LOADER_
+
+struct ddsColorBlock
+{
+	u16		colors[ 2 ];
+	u8		row[ 4 ];
+} PACK_STRUCT;
+
+
+struct ddsAlphaBlockExplicit
+{
+	u16		row[ 4 ];
+} PACK_STRUCT;
+
+
+struct ddsAlphaBlock3BitLinear
+{
+	u8		alpha0;
+	u8		alpha1;
+	u8		stuff[ 6 ];
+} PACK_STRUCT;
+
+
+struct ddsColor
+{
+	u8		r, g, b, a;
+} PACK_STRUCT;
+
+#endif
+
+
+// Default alignment
+#include "irrunpack.h"
+
+
+/* endian tomfoolery */
+typedef union
+{
+	f32	f;
+	c8	c[ 4 ];
+}
+floatSwapUnion;
+
+
+#ifndef __BIG_ENDIAN__
+#ifdef _SGI_SOURCE
+#define	__BIG_ENDIAN__
+#endif
+#endif
+
+
+#ifdef __BIG_ENDIAN__
+
+	s32   DDSBigLong( s32 src ) { return src; }
+	s16 DDSBigShort( s16 src ) { return src; }
+	f32 DDSBigFloat( f32 src ) { return src; }
+
+	s32 DDSLittleLong( s32 src )
+	{
+		return ((src & 0xFF000000) >> 24) |
+			((src & 0x00FF0000) >> 8) |
+			((src & 0x0000FF00) << 8) |
+			((src & 0x000000FF) << 24);
+	}
+
+	s16 DDSLittleShort( s16 src )
+	{
+		return ((src & 0xFF00) >> 8) |
+			((src & 0x00FF) << 8);
+	}
+
+	f32 DDSLittleFloat( f32 src )
+	{
+		floatSwapUnion in,out;
+		in.f = src;
+		out.c[ 0 ] = in.c[ 3 ];
+		out.c[ 1 ] = in.c[ 2 ];
+		out.c[ 2 ] = in.c[ 1 ];
+		out.c[ 3 ] = in.c[ 0 ];
+		return out.f;
+	}
+
+#else /*__BIG_ENDIAN__*/
+
+	s32   DDSLittleLong( s32 src ) { return src; }
+	s16 DDSLittleShort( s16 src ) { return src; }
+	f32 DDSLittleFloat( f32 src ) { return src; }
+
+	s32 DDSBigLong( s32 src )
+	{
+		return ((src & 0xFF000000) >> 24) |
+			((src & 0x00FF0000) >> 8) |
+			((src & 0x0000FF00) << 8) |
+			((src & 0x000000FF) << 24);
+	}
+
+	s16 DDSBigShort( s16 src )
+	{
+		return ((src & 0xFF00) >> 8) |
+			((src & 0x00FF) << 8);
+	}
+
+	f32 DDSBigFloat( f32 src )
+	{
+		floatSwapUnion in,out;
+		in.f = src;
+		out.c[ 0 ] = in.c[ 3 ];
+		out.c[ 1 ] = in.c[ 2 ];
+		out.c[ 2 ] = in.c[ 1 ];
+		out.c[ 3 ] = in.c[ 0 ];
+		return out.f;
+	}
+
+#endif /*__BIG_ENDIAN__*/
+
+
+/*!
+	Surface Loader for DDS images
+*/
+class CImageLoaderDDS : public IImageLoader
+{
+public:
+
+	//! returns true if the file maybe is able to be loaded by this class
+	//! based on the file extension (e.g. ".tga")
+	virtual bool isALoadableFileExtension(const io::path& filename) const _IRR_OVERRIDE_;
+
+	//! returns true if the file maybe is able to be loaded by this class
+	virtual bool isALoadableFileFormat(io::IReadFile* file) const _IRR_OVERRIDE_;
+
+	//! creates a surface from the file
+	virtual IImage* loadImage(io::IReadFile* file) const _IRR_OVERRIDE_;
+};
+
+
+} // end namespace video
+} // end namespace irr
+
+#endif // compiled with DDS loader
+#endif
+