1 files changed, 89 insertions, 0 deletions
diff --git a/indra/llimage/llimagetga.h b/indra/llimage/llimagetga.h
new file mode 100644
index 0000000000..376d6dc269
--- /dev/null
+++ b/indra/llimage/llimagetga.h
@@ -0,0 +1,89 @@
+/** 
+ * @file llimagetga.h
+ * @brief Image implementation to compresses and decompressed TGA files.
+ *
+ * Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#ifndef LL_LLIMAGETGA_H
+#define LL_LLIMAGETGA_H
+
+#include "llimage.h"
+
+// This class compresses and decompressed TGA (targa) files
+
+class LLImageTGA : public LLImageFormatted
+{
+protected:
+	virtual ~LLImageTGA();
+	
+public:
+	LLImageTGA();
+	LLImageTGA(const LLString& file_name);
+
+	/*virtual*/ BOOL updateData();
+	/*virtual*/ BOOL decode(LLImageRaw* raw_image, F32 decode_time=0.0);
+	/*virtual*/ BOOL encode(const LLImageRaw* raw_image, F32 encode_time=0.0);
+
+	BOOL			 decodeAndProcess(LLImageRaw* raw_image, F32 domain, F32 weight);
+	
+private:
+	BOOL			 decodeTruecolor( LLImageRaw* raw_image, BOOL rle, BOOL flipped );
+
+	BOOL			 decodeTruecolorRle8( LLImageRaw* raw_image );
+	BOOL			 decodeTruecolorRle15( LLImageRaw* raw_image );
+	BOOL			 decodeTruecolorRle24( LLImageRaw* raw_image );
+	BOOL			 decodeTruecolorRle32( LLImageRaw* raw_image, BOOL &alpha_opaque );
+
+	void			 decodeTruecolorPixel15( U8* dst, const U8* src );
+
+	BOOL			 decodeTruecolorNonRle( LLImageRaw* raw_image, BOOL &alpha_opaque );
+	
+	BOOL			 decodeColorMap( LLImageRaw* raw_image, BOOL rle, BOOL flipped );
+
+	void			 decodeColorMapPixel8(U8* dst, const U8* src);
+	void			 decodeColorMapPixel15(U8* dst, const U8* src);
+	void			 decodeColorMapPixel24(U8* dst, const U8* src);
+	void			 decodeColorMapPixel32(U8* dst, const U8* src);
+
+	bool			 loadFile(const LLString& file_name);
+	
+private:
+	// Class specific data
+	U32 mDataOffset; // Offset from start of data to the actual header.
+
+	// Data from header
+	U8 mIDLength;		// Length of identifier string
+	U8 mColorMapType;	// 0 = No Map
+	U8 mImageType;		// Supported: 2 = Uncompressed true color, 3 = uncompressed monochrome without colormap
+	U8 mColorMapIndexLo;	// First color map entry (low order byte)
+	U8 mColorMapIndexHi;	// First color map entry (high order byte)
+	U8 mColorMapLengthLo;	// Color map length (low order byte)
+	U8 mColorMapLengthHi;	// Color map length (high order byte)
+	U8 mColorMapDepth;	// Size of color map entry (15, 16, 24, or 32 bits)
+	U8 mXOffsetLo;		// X offset of image (low order byte)
+	U8 mXOffsetHi;		// X offset of image (hi order byte)
+	U8 mYOffsetLo;		// Y offset of image (low order byte)
+	U8 mYOffsetHi;		// Y offset of image (hi order byte)
+	U8 mWidthLo;		// Width (low order byte)
+	U8 mWidthHi;		// Width (hi order byte)
+	U8 mHeightLo;		// Height (low order byte)
+	U8 mHeightHi;		// Height (hi order byte)
+	U8 mPixelSize;		// 8, 16, 24, 32 bits per pixel
+	U8 mAttributeBits;	// 4 bits: number of attributes per pixel
+	U8 mOriginRightBit;	// 1 bit: origin, 0 = left, 1 = right
+	U8 mOriginTopBit;	// 1 bit: origin, 0 = bottom, 1 = top
+	U8 mInterleave;		// 2 bits: interleaved flag, 0 = none, 1 = interleaved 2, 2 = interleaved 4
+
+	U8*		mColorMap;
+	S32		mColorMapStart;
+	S32		mColorMapLength; 
+	S32		mColorMapBytesPerEntry;
+
+	BOOL	mIs15Bit;
+
+	static const U8 s5to8bits[32];
+};
+
+#endif