Add DevIL 1.7.8.

libs/DevIL-1.7.8/src-IL/src/il_ftx.c

@@ -0,0 +1,101 @@
+//-----------------------------------------------------------------------------
+//
+// ImageLib Sources
+// Copyright (C) 2000-2009 by Denton Woods
+// Last modified: 02/12/2009
+//
+// Filename: src-IL/src/il_ftx.c
+//
+// Description: Reads from a Heavy Metal: FAKK2 (.ftx) file.
+//
+//-----------------------------------------------------------------------------
+
+#include "il_internal.h"
+#ifndef IL_NO_FTX
+
+ILboolean iLoadFtxInternal(void);
+
+
+//! Reads a FTX file
+ILboolean ilLoadFtx(ILconst_string FileName)
+{
+	ILHANDLE	FtxFile;
+	ILboolean	bFtx = IL_FALSE;
+
+	FtxFile = iopenr(FileName);
+	if (FtxFile == NULL) {
+		ilSetError(IL_COULD_NOT_OPEN_FILE);
+		return bFtx;
+	}
+
+	bFtx = ilLoadFtxF(FtxFile);
+	icloser(FtxFile);
+
+	return bFtx;
+}
+
+
+//! Reads an already-opened FTX file
+ILboolean ilLoadFtxF(ILHANDLE File)
+{
+	ILuint		FirstPos;
+	ILboolean	bRet;
+	
+	iSetInputFile(File);
+	FirstPos = itell();
+	bRet = iLoadFtxInternal();
+	iseek(FirstPos, IL_SEEK_SET);
+	
+	return bRet;
+}
+
+
+//! Reads from a memory "lump" that contains a FTX
+ILboolean ilLoadFtxL(const void *Lump, ILuint Size)
+{
+	iSetInputLump(Lump, Size);
+	return iLoadFtxInternal();
+}
+
+
+// Internal function used to load the FTX.
+ILboolean iLoadFtxInternal(void)
+{
+	ILuint Width, Height, HasAlpha;
+
+	if (iCurImage == NULL) {
+		ilSetError(IL_ILLEGAL_OPERATION);
+		return IL_FALSE;
+	}
+
+	Width = GetLittleUInt();
+	Height = GetLittleUInt();
+	HasAlpha = GetLittleUInt();  // Kind of backwards from what I would think...
+
+	//@TODO: Right now, it appears that all images are in RGBA format.  See if I can find specs otherwise
+	//  or images that load incorrectly like this.
+	//if (HasAlpha == 0) {  // RGBA format
+		if (!ilTexImage(Width, Height, 1, 4, IL_RGBA, IL_UNSIGNED_BYTE, NULL))
+			return IL_FALSE;
+	//}
+	//else if (HasAlpha == 1) {  // RGB format
+	//	if (!ilTexImage(Width, Height, 1, 3, IL_RGB, IL_UNSIGNED_BYTE, NULL))
+	//		return IL_FALSE;
+	//}
+	//else {  // Unknown format
+	//	ilSetError(IL_INVALID_FILE_HEADER);
+	//	return IL_FALSE;
+	//}
+
+	// The origin will always be in the upper left.
+	iCurImage->Origin = IL_ORIGIN_UPPER_LEFT;
+
+	// All we have to do for this format is read the raw, uncompressed data.
+	if (iread(iCurImage->Data, 1, iCurImage->SizeOfData) != iCurImage->SizeOfData)
+		return IL_FALSE;
+
+	return ilFixImage();
+}
+
+#endif//IL_NO_FTX
+