Add some external dependencies.

extern/pvrtextool/Include/PVRTDecompress.h

@@ -0,0 +1,58 @@
+/******************************************************************************
+
+ @File         PVRTDecompress.h
+
+ @Title        PVRTDecompress
+
+ @Version      
+
+ @Copyright    Copyright (c) Imagination Technologies Limited. All Rights Reserved. Strictly Confidential.
+
+ @Platform     ANSI compatible
+
+ @Description  PVRTC and ETC Texture Decompression.
+
+******************************************************************************/
+
+#ifndef _PVRTDECOMPRESS_H_
+#define _PVRTDECOMPRESS_H_
+
+/*!***********************************************************************
+ @Function		PVRTDecompressPVRTC
+ @Input			pCompressedData The PVRTC texture data to decompress
+ @Input			Do2bitMode Signifies whether the data is PVRTC2 or PVRTC4
+ @Input			XDim X dimension of the texture
+ @Input			YDim Y dimension of the texture
+ @Return		Returns the amount of data that was decompressed.
+ @Modified		pResultImage The decompressed texture data
+ @Description	Decompresses PVRTC to RGBA 8888
+*************************************************************************/
+int PVRTDecompressPVRTC(const void *pCompressedData,
+				const int Do2bitMode,
+				const int XDim,
+				const int YDim,
+				unsigned char* pResultImage);
+
+/*!***********************************************************************
+@Function		PVRTDecompressETC
+@Input			pSrcData The ETC texture data to decompress
+@Input			x X dimension of the texture
+@Input			y Y dimension of the texture
+@Modified		pDestData The decompressed texture data
+@Input			nMode The format of the data
+@Returns		The number of bytes of ETC data decompressed
+@Description	Decompresses ETC to RGBA 8888
+*************************************************************************/
+int PVRTDecompressETC(const void * const pSrcData,
+						 const unsigned int &x,
+						 const unsigned int &y,
+						 void *pDestData,
+						 const int &nMode);
+
+
+#endif /* _PVRTDECOMPRESS_H_ */
+
+/*****************************************************************************
+ End of file (PVRTBoneBatch.h)
+*****************************************************************************/
+