2 * Copyright 2005-2006 Luc Verhaegen.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
24 /* Standalone VESA CVT standard timing modelines generator. */
27 #include "xf86Modes.h"
29 /* FatalError implementation used by the server code we built in */
31 FatalError(const char *f, ...)
36 vfprintf(stderr, f, args);
41 /* xnfalloc implementation used by the server code we built in */
43 XNFalloc(unsigned long n)
49 perror("malloc failed");
55 /* xnfcalloc implementation used by the server code we built in */
57 XNFcalloc(unsigned long n)
63 perror("calloc failed");
70 * Quickly check wether this is a CVT standard mode.
73 CVTCheckStandard(int HDisplay, int VDisplay, float VRefresh, Bool Reduced,
78 if ((!(VDisplay % 3) && ((VDisplay * 4 / 3) == HDisplay)) ||
79 (!(VDisplay % 9) && ((VDisplay * 16 / 9) == HDisplay)) ||
80 (!(VDisplay % 10) && ((VDisplay * 16 / 10) == HDisplay)) ||
81 (!(VDisplay % 4) && ((VDisplay * 5 / 4) == HDisplay)) ||
82 (!(VDisplay % 9) && ((VDisplay * 15 / 9) == HDisplay)));
85 fprintf(stderr, "Warning: Aspect Ratio is not CVT standard.\n");
89 if ((VRefresh != 50.0) && (VRefresh != 60.0) &&
90 (VRefresh != 75.0) && (VRefresh != 85.0)) {
92 fprintf(stderr, "Warning: Refresh Rate is not CVT standard "
93 "(50, 60, 75 or 85Hz).\n");
101 * I'm not documenting --interlaced for obvious reasons, even though I did
102 * implement it. I also can't deny having looked at gtf here.
105 PrintUsage(char *Name)
107 fprintf(stderr, "\n");
108 fprintf(stderr, "usage: %s [-v|--verbose] [-r|--reduced] X Y [refresh]\n",
110 fprintf(stderr, "\n");
111 fprintf(stderr, " -v|--verbose : Warn about CVT standard adherance.\n");
112 fprintf(stderr, " -r|--reduced : Create a mode with reduced blanking "
113 "(default: normal blanking).\n");
114 fprintf(stderr, " X : Desired horizontal resolution "
115 "(multiple of 8, required).\n");
117 " Y : Desired vertical resolution (required).\n");
119 " refresh : Desired refresh rate (default: 60.0Hz).\n");
120 fprintf(stderr, "\n");
122 fprintf(stderr, "Calculates VESA CVT (Coordinated Video Timing) modelines"
123 " for use with X.\n");
130 PrintComment(DisplayModeRec * Mode, Bool CVT, Bool Reduced)
132 printf("# %dx%d %.2f Hz ", Mode->HDisplay, Mode->VDisplay, Mode->VRefresh);
136 ((float) Mode->HDisplay * Mode->VDisplay) / 1000000.0);
138 if (!(Mode->VDisplay % 3) &&
139 ((Mode->VDisplay * 4 / 3) == Mode->HDisplay))
141 else if (!(Mode->VDisplay % 9) &&
142 ((Mode->VDisplay * 16 / 9) == Mode->HDisplay))
144 else if (!(Mode->VDisplay % 10) &&
145 ((Mode->VDisplay * 16 / 10) == Mode->HDisplay))
147 else if (!(Mode->VDisplay % 4) &&
148 ((Mode->VDisplay * 5 / 4) == Mode->HDisplay))
150 else if (!(Mode->VDisplay % 9) &&
151 ((Mode->VDisplay * 15 / 9) == Mode->HDisplay))
162 printf("hsync: %.2f kHz; ", Mode->HSync);
163 printf("pclk: %.2f MHz", ((float) Mode->Clock) / 1000.0);
169 * Originally grabbed from xf86Mode.c.
171 * Ignoring the actual Mode->name, as the user will want something solid
175 PrintModeline(DisplayModePtr Mode, int HDisplay, int VDisplay, float VRefresh,
179 printf("Modeline \"%dx%dR\" ", HDisplay, VDisplay);
181 printf("Modeline \"%dx%d_%.2f\" ", HDisplay, VDisplay, VRefresh);
183 printf("%6.2f %i %i %i %i %i %i %i %i", Mode->Clock / 1000.,
184 Mode->HDisplay, Mode->HSyncStart, Mode->HSyncEnd, Mode->HTotal,
185 Mode->VDisplay, Mode->VSyncStart, Mode->VSyncEnd, Mode->VTotal);
187 if (Mode->Flags & V_INTERLACE)
188 printf(" interlace");
189 if (Mode->Flags & V_PHSYNC)
191 if (Mode->Flags & V_NHSYNC)
193 if (Mode->Flags & V_PVSYNC)
195 if (Mode->Flags & V_NVSYNC)
205 main(int argc, char *argv[])
207 DisplayModeRec *Mode;
208 int HDisplay = 0, VDisplay = 0;
209 float VRefresh = 0.0;
210 Bool Reduced = FALSE, Verbose = FALSE, IsCVT;
211 Bool Interlaced = FALSE;
214 if ((argc < 3) || (argc > 7)) {
219 /* This doesn't filter out bad flags properly. Bad flags get passed down
220 * to atoi/atof, which then return 0, so that these variables can get
221 * filled next time round. So this is just a cosmetic problem.
223 for (n = 1; n < argc; n++) {
224 if (!strcmp(argv[n], "-r") || !strcmp(argv[n], "--reduced"))
226 else if (!strcmp(argv[n], "-i") || !strcmp(argv[n], "--interlaced"))
228 else if (!strcmp(argv[n], "-v") || !strcmp(argv[n], "--verbose"))
230 else if (!strcmp(argv[n], "-h") || !strcmp(argv[n], "--help")) {
234 else if (!HDisplay) {
235 HDisplay = atoi(argv[n]);
241 else if (!VDisplay) {
242 VDisplay = atoi(argv[n]);
248 else if (!VRefresh) {
249 VRefresh = atof(argv[n]);
261 if (!HDisplay || !VDisplay) {
266 /* Default to 60.0Hz */
270 /* Horizontal timing is always a multiple of 8: round up. */
271 if (HDisplay & 0x07) {
277 if ((VRefresh / 60.0) != floor(VRefresh / 60.0)) {
279 "\nERROR: Multiple of 60Hz refresh rate required for "
280 " reduced blanking.\n");
286 IsCVT = CVTCheckStandard(HDisplay, VDisplay, VRefresh, Reduced, Verbose);
288 Mode = xf86CVTMode(HDisplay, VDisplay, VRefresh, Reduced, Interlaced);
290 PrintComment(Mode, IsCVT, Reduced);
291 PrintModeline(Mode, HDisplay, VDisplay, VRefresh, Reduced);