1 files changed, 158 insertions, 0 deletions
diff --git a/DevIL/src-IL/src/il_pix.cpp b/DevIL/src-IL/src/il_pix.cpp
new file mode 100644
index 00000000..2f1b070d
--- /dev/null
+++ b/DevIL/src-IL/src/il_pix.cpp
@@ -0,0 +1,158 @@
+//-----------------------------------------------------------------------------
+//
+// ImageLib Sources
+// Copyright (C) 2000-2009 by Denton Woods
+// Last modified: 03/07/2009
+//
+// Filename: src-IL/src/il_pix.c
+//
+// Description: Reads from an Alias | Wavefront .pix file.
+//
+//-----------------------------------------------------------------------------
+
+
+#include "il_internal.h"
+#ifndef IL_NO_PIX
+#include "il_endian.h"
+
+
+#ifdef _MSC_VER
+#pragma pack(push, pix_struct, 1)
+#endif
+typedef struct PIXHEAD
+{
+	ILushort	Width;
+	ILushort	Height;
+	ILushort	OffX;
+	ILushort	OffY;
+	ILushort	Bpp;
+} IL_PACKSTRUCT PIXHEAD;
+#ifdef _MSC_VER
+#pragma pack(pop, pix_struct)
+#endif
+
+ILboolean iCheckPix(PIXHEAD *Header);
+ILboolean iLoadPixInternal(void);
+
+
+// Internal function used to get the Pix header from the current file.
+ILboolean iGetPixHead(PIXHEAD *Header)
+{
+	Header->Width = GetBigUShort();
+	Header->Height = GetBigUShort();
+	Header->OffX = GetBigUShort();
+	Header->OffY = GetBigUShort();
+	Header->Bpp = GetBigUShort();
+
+	return IL_TRUE;
+}
+
+
+// Internal function to get the header and check it.
+ILboolean iIsValidPix()
+{
+	PIXHEAD	Head;
+
+	if (!iGetPixHead(&Head))
+		return IL_FALSE;
+	iseek(-(ILint)sizeof(PIXHEAD), IL_SEEK_CUR);
+
+	return iCheckPix(&Head);
+}
+
+
+// Internal function used to check if the HEADER is a valid Pix header.
+ILboolean iCheckPix(PIXHEAD *Header)
+{
+	if (Header->Width == 0 || Header->Height == 0)
+		return IL_FALSE;
+	if (Header->Bpp != 24)
+		return IL_FALSE;
+	//if (Header->OffY != Header->Height)
+	//	return IL_FALSE;
+
+	return IL_TRUE;
+}
+
+
+//! Reads a Pix file
+ILboolean ilLoadPix(ILconst_string FileName)
+{
+	ILHANDLE	PixFile;
+	ILboolean	bPix = IL_FALSE;
+
+	PixFile = iopenr(FileName);
+	if (PixFile == NULL) {
+		ilSetError(IL_COULD_NOT_OPEN_FILE);
+		return bPix;
+	}
+
+	bPix = ilLoadPixF(PixFile);
+	icloser(PixFile);
+
+	return bPix;
+}
+
+
+//! Reads an already-opened Pix file
+ILboolean ilLoadPixF(ILHANDLE File)
+{
+	ILuint		FirstPos;
+	ILboolean	bRet;
+
+	iSetInputFile(File);
+	FirstPos = itell();
+	bRet = iLoadPixInternal();
+	iseek(FirstPos, IL_SEEK_SET);
+
+	return bRet;
+}
+
+
+//! Reads from a memory "lump" that contains a Pix
+ILboolean ilLoadPixL(const void *Lump, ILuint Size)
+{
+	iSetInputLump(Lump, Size);
+	return iLoadPixInternal();
+}
+
+
+// Internal function used to load the Pix.
+ILboolean iLoadPixInternal()
+{
+	PIXHEAD	Header;
+	ILuint	i, j;
+	ILubyte	ByteHead, Colour[3];
+
+	if (iCurImage == NULL) {
+		ilSetError(IL_ILLEGAL_OPERATION);
+		return IL_FALSE;
+	}
+
+	if (!iGetPixHead(&Header))
+		return IL_FALSE;
+	if (!iCheckPix(&Header)) {
+		ilSetError(IL_INVALID_FILE_HEADER);
+		return IL_FALSE;
+	}
+
+	if (!ilTexImage(Header.Width, Header.Height, 1, 3, IL_BGR, IL_UNSIGNED_BYTE, NULL))
+		return IL_FALSE;
+
+	for (i = 0; i < iCurImage->SizeOfData; ) {
+		ByteHead = igetc();
+		if (iread(Colour, 1, 3) != 3)
+			return IL_FALSE;
+		for (j = 0; j < ByteHead; j++) {
+			iCurImage->Data[i++] = Colour[0];
+			iCurImage->Data[i++] = Colour[1];
+			iCurImage->Data[i++] = Colour[2];
+		}
+	}
+
+	iCurImage->Origin = IL_ORIGIN_UPPER_LEFT;
+
+	return ilFixImage();
+}
+
+#endif//IL_NO_PIX