sys/dev/videomode/modelines2c.awk

   1 #! /usr/bin/awk -f
   2 #       $NetBSD: modelines2c.awk,v 1.3 2006/05/09 17:51:03 gdamore Exp $
   3 #
   4 # Copyright (c) 2006 Itronix Inc.
   5 # All rights reserved.
   6 #
   7 # Written by Garrett D'Amore for Itronix Inc.
   8 #
   9 # Redistribution and use in source and binary forms, with or without
  10 # modification, are permitted provided that the following conditions
  11 # are met:
  12 # 1. Redistributions of source code must retain the above copyright
  13 #    notice, this list of conditions and the following disclaimer.
  14 # 2. Redistributions in binary form must reproduce the above copyright
  15 #    notice, this list of conditions and the following disclaimer in the
  16 #    documentation and/or other materials provided with the distribution.
  17 # 3. The name of Itronix Inc. may not be used to endorse
  18 #    or promote products derived from this software without specific
  19 #    prior written permission.
  20 #
  21 # THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
  22 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  23 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
  25 # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  26 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  28 # ON ANY THEORY OF LIABILITY, WHETHER IN
  29 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31 # POSSIBILITY OF SUCH DAMAGE.
  32 #
  33
  34 BEGIN {
  35         nmodes = 0;
  36 }
  37
  38 NR == 1 {
  39         split($0,v,"$");
  40
  41         VERSION=v[2];
  42
  43         printf("/*\t$NetBSD" "$\t*/\n\n");
  44         printf("/*\n") ;
  45         printf(" * THIS FILE AUTOMATICALLY GENERATED.  DO NOT EDIT.\n");
  46         printf(" *\n");
  47         printf(" * generated from:\n");
  48         printf(" *\t%s\n", VERSION);
  49         printf(" */\n\n");
  50
  51         printf("#include <sys/cdefs.h>\n");
  52         printf("__KERNEL_RCSID(0, \"$NetBSD" "$\");\n\n");
  53
  54         printf("#include <dev/videomode/videomode.h>\n\n");
  55
  56         printf("/*\n");
  57         printf(" * These macros help the modelines below fit on one line.\n");
  58         printf(" */\n");
  59         printf("#define HP VID_PHSYNC\n");
  60         printf("#define HN VID_NHSYNC\n");
  61         printf("#define VP VID_PVSYNC\n");
  62         printf("#define VN VID_NVSYNC\n");
  63         printf("#define I VID_INTERLACE\n");
  64         printf("#define DS VID_DBLSCAN\n");
  65         printf("\n");
  66
  67         printf("#define M(nm,hr,vr,clk,hs,he,ht,vs,ve,vt,f) \\\n");
  68         printf("\t{ clk, hr, hs, he, ht, vr, vs, ve, vt, f, nm } \n\n");
  69
  70         printf("const struct videomode videomode_list[] = {\n");
  71
  72         next
  73 }
  74
  75 (/^ModeLine/) {
  76         dotclock =   $3;
  77
  78         hdisplay =   $4;
  79         hsyncstart = $5;
  80         hsyncend =   $6;
  81         htotal =     $7;
  82
  83         vdisplay =   $8;
  84         vsyncstart = $9;
  85         vsyncend =   $10;
  86         vtotal =     $11;
  87
  88         macro =      "MODE";
  89         iflag =      "";
  90         iflags =     "";
  91         hflags =     "HP";
  92         vflags =     "VP";
  93
  94         if ($12 ~ "^-")
  95                 hflags = "HN";
  96
  97         if ($13 ~ "^-")
  98                 vflags = "VN";
  99
 100         ifactor=1.0;
 101         if ($14 ~ "[Ii][Nn][Tt][Ee][Rr][Ll][Aa][Cc][Ee]") {
 102                 iflag = "i";
 103                 iflags = "|I";
 104                 ifactor = 2.0;
 105         }
 106
 107         # why the additional .1 to vrefresh?  well it seems that awk likes to
 108         # make some "rounding errors", and this will compensate
 109
 110         hrefresh= (dotclock * 1000000) / htotal;
 111         vrefresh= int(((hrefresh * ifactor) / vtotal) + .1);
 112
 113         modestr = sprintf("%dx%dx%d%s", hdisplay, vdisplay, vrefresh, iflag);
 114
 115 #       printf("/* %dx%d%s refresh %d Hz, hsync %d kHz */\n",
 116 #           hdisplay, vdisplay, iflag, vrefresh, hrefresh/1000);
 117         printf("M(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%s),\n",
 118             modestr,
 119             hdisplay, vdisplay, dotclock * 1000,
 120             hsyncstart, hsyncend, htotal,
 121             vsyncstart, vsyncend, vtotal, hflags "|" vflags iflags);
 122
 123         modestr = sprintf("%dx%dx%d%s",
 124             hdisplay/2 , vdisplay/2, vrefresh, iflag);
 125
 126         dmodes[nmodes]=sprintf("M(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%s),",
 127             modestr,
 128             hdisplay/2, vdisplay/2, dotclock * 1000 / 2,
 129             hsyncstart/2, hsyncend/2, htotal/2,
 130             vsyncstart/2, vsyncend/2, vtotal/2,
 131             hflags "|" vflags "|DS" iflags);
 132
 133         nmodes = nmodes + 1
 134
 135 }
 136
 137 END {
 138
 139         printf("\n/* Derived Double Scan Modes */\n\n");
 140
 141         for ( i = 0; i < nmodes; i++ )
 142         {
 143                 print dmodes[i];
 144         }
 145
 146         printf("};\n\n");
 147         printf("const int videomode_count = %d;\n", nmodes);
 148 }