Use SDL for endianness byte swapping. m_swap.c removed; m_swap.h renamed

to i_swap.h.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 857

1 files changed, 50 insertions, 0 deletions

diff --git a/src/i_swap.h b/src/i_swap.h
new file mode 100644
index 00000000..d24f500e
--- /dev/null
+++ b/src/i_swap.h
@@ -0,0 +1,50 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// Copyright(C) 2005,2006,2007 Simon Howard
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+// DESCRIPTION:
+//	Endianess handling, swapping 16bit and 32bit.
+//
+//-----------------------------------------------------------------------------
+
+
+#ifndef __I_SWAP__
+#define __I_SWAP__
+
+#include "SDL_endian.h"
+
+// Endianess handling.
+// WAD files are stored little endian.
+
+// Just use SDL's endianness swapping functions.
+
+#define SHORT(x)  SDL_SwapLE16(x)
+#define LONG(x)   SDL_SwapLE32(x)
+
+// Defines for checking the endianness of the system.
+
+#if SDL_BYTEORDER == SYS_LIL_ENDIAN
+#define SYS_LITTLE_ENDIAN
+#elif SDL_BYTEORDER == SYS_BIG_ENDIAN
+#define SYS_BIG_ENDIAN
+#endif
+
+#endif
+