1#! /usr/bin/awk -f
2#	$NetBSD: modelines2c.awk,v 1.4 2006/10/26 23:19:50 bjh21 Exp $
3#	$OpenBSD: modelines2c.awk,v 1.2 2012/12/05 23:20:22 deraadt Exp $
4#
5# Copyright (c) 2006 Itronix Inc.
6# All rights reserved.
7#
8# Written by Garrett D'Amore for Itronix Inc.
9#
10# Redistribution and use in source and binary forms, with or without
11# modification, are permitted provided that the following conditions
12# are met:
13# 1. Redistributions of source code must retain the above copyright
14#    notice, this list of conditions and the following disclaimer.
15# 2. Redistributions in binary form must reproduce the above copyright
16#    notice, this list of conditions and the following disclaimer in the
17#    documentation and/or other materials provided with the distribution.
18# 3. The name of Itronix Inc. may not be used to endorse
19#    or promote products derived from this software without specific
20#    prior written permission.
21#
22# THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
23# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
26# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
27# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
29# ON ANY THEORY OF LIABILITY, WHETHER IN
30# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32# POSSIBILITY OF SUCH DAMAGE.
33#
34
35BEGIN {
36	nmodes = 0;
37}
38
39NR == 1 {
40	split($0,v,"$");
41
42	VERSION=v[2];
43
44	printf("/*\t$OpenBSD" "$\t*/\n\n");
45	printf("/*\n") ;
46	printf(" * THIS FILE AUTOMATICALLY GENERATED.  DO NOT EDIT.\n");
47	printf(" *\n");
48	printf(" * generated from:\n");
49	printf(" *\t%s\n", VERSION);
50	printf(" */\n\n");
51
52	printf("#include <sys/types.h>\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
137END {
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}
149