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diff --git a/psxdev/bs.h b/psxdev/bs.h
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+/* $Id: bs.h,v 1.1 2002-06-21 23:45:51 Pixel Exp $ */
+
+/*
+	libbs - library for the bitstream image format
+
+	Copyright (C) 1999, 2000 by these people, who contributed to this project
+
+	  bero@geocities.co.jp
+	  Daniel Balster <dbalster@psxdev.de>
+
+	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., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/*
+	DCT code is based on Independent JPEG Group's sotfware
+*/
+
+#ifndef __LIB_BS_H
+#define __LIB_BS_H
+
+#define _GNU_SOURCE
+
+#include <sys/types.h>
+#include <stdarg.h>
+
+typedef struct {
+	int width,height;
+	int bit;
+	int nextline;
+	unsigned char *top,*lpbits;
+} bs_input_image_t;
+
+#define BS_MAGIC 0x3800
+#define BS_TYPE 2
+
+typedef struct {
+	u_short length;
+	u_short magic;
+	u_short q_scale;
+	u_short type;
+} bs_header_t;
+
+/* prototypes */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void bs_init (void);
+
+int bs_encode (				// returns BS image size in bytes
+	bs_header_t *outbuf,	// output BS image
+	bs_input_image_t *img,	// input image descriptor
+	int type,				// image type (use BS_TYPE)
+	int q_scale,			// Q scaling factor (1=best,>= lower quality)
+	unsigned char *myiqtab	// provide own iqtab (NULL == default)
+	);
+
+void bs_decode_rgb24 (
+	unsigned char *outbuf,	// output RGB bytes (width*height*3)
+	bs_header_t *img,		// input BS image
+	int width, int height,	// dimension of BS image
+	unsigned char *myiqtab
+	);
+
+void bs_decode_rgb15 (
+	unsigned short *outbuf,	// output RGB bytes (width*height*2)
+	bs_header_t *img,		// input BS image
+	int width, int height,	// dimension of BS image
+	unsigned char *myiqtab
+	);
+
+const unsigned char *bs_iqtab (void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __LIB_BS_H */