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      1 /*	$NetBSD: grfabs_tt.h,v 1.3 2009/10/20 19:10:10 snj Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1996 Leo Weppelman.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #ifndef _GRFABS_TT_H
     29 #define _GRFABS_TT_H
     30 
     31 /*
     32  * Colormap related macro's
     33  */
     34 #define CM_L2TT(v) \
     35     (((0x000f0000 & (v)) >> 8) | ((0x00000f00 & (v)) >> 4) |\
     36       (0x0000000f & (v)))
     37 #define CM_TT2L(v) \
     38     ((((0x00000f00 & (v)) * 0xff / 0xf) << 8) |\
     39      (((0x000000f0 & (v)) * 0xff / 0xf) << 4) |\
     40        (0x0000000f & (v)) * 0xff / 0xf)
     41 
     42 void tt_probe_video(MODES *);
     43 #endif /*  _GRFABS_TT_H */
     44