| 1 | /* |
| 2 | * Copyright 2005-2006 Luc Verhaegen. |
| 3 | * |
| 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: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 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. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | /* Standalone VESA CVT standard timing modelines generator. */ |
| 25 | |
| 26 | #include "xf86.h" |
| 27 | #include "xf86Modes.h" |
| 28 | |
| 29 | /* FatalError implementation used by the server code we built in */ |
| 30 | void |
| 31 | FatalError(const char *f, ...) |
| 32 | { |
| 33 | va_list args; |
| 34 | |
| 35 | va_start(args, f); |
| 36 | vfprintf(stderr, f, args); |
| 37 | va_end(args); |
| 38 | exit(1); |
| 39 | } |
| 40 | |
| 41 | /* xnfalloc implementation used by the server code we built in */ |
| 42 | pointer |
| 43 | XNFalloc(unsigned long n) |
| 44 | { |
| 45 | pointer r; |
| 46 | |
| 47 | r = malloc(n); |
| 48 | if (!r) { |
| 49 | perror("malloc failed"); |
| 50 | exit(1); |
| 51 | } |
| 52 | return r; |
| 53 | } |
| 54 | |
| 55 | /* xnfcalloc implementation used by the server code we built in */ |
| 56 | pointer |
| 57 | XNFcalloc(unsigned long n) |
| 58 | { |
| 59 | pointer r; |
| 60 | |
| 61 | r = calloc(1, n); |
| 62 | if (!r) { |
| 63 | perror("calloc failed"); |
| 64 | exit(1); |
| 65 | } |
| 66 | return r; |
| 67 | } |
| 68 | |
| 69 | /* |
| 70 | * Quickly check wether this is a CVT standard mode. |
| 71 | */ |
| 72 | static Bool |
| 73 | CVTCheckStandard(int HDisplay, int VDisplay, float VRefresh, Bool Reduced, |
| 74 | Bool Verbose) |
| 75 | { |
| 76 | Bool IsCVT = TRUE; |
| 77 | |
| 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))); |
| 83 | else { |
| 84 | if (Verbose) |
| 85 | fprintf(stderr, "Warning: Aspect Ratio is not CVT standard.\n"); |
| 86 | IsCVT = FALSE; |
| 87 | } |
| 88 | |
| 89 | if ((VRefresh != 50.0) && (VRefresh != 60.0) && |
| 90 | (VRefresh != 75.0) && (VRefresh != 85.0)) { |
| 91 | if (Verbose) |
| 92 | fprintf(stderr, "Warning: Refresh Rate is not CVT standard " |
| 93 | "(50, 60, 75 or 85Hz).\n"); |
| 94 | IsCVT = FALSE; |
| 95 | } |
| 96 | |
| 97 | return IsCVT; |
| 98 | } |
| 99 | |
| 100 | /* |
| 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. |
| 103 | */ |
| 104 | static void |
| 105 | PrintUsage(char *Name) |
| 106 | { |
| 107 | fprintf(stderr, "\n"); |
| 108 | fprintf(stderr, "usage: %s [-v|--verbose] [-r|--reduced] X Y [refresh]\n", |
| 109 | Name); |
| 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"); |
| 116 | fprintf(stderr, |
| 117 | " Y : Desired vertical resolution (required).\n"); |
| 118 | fprintf(stderr, |
| 119 | " refresh : Desired refresh rate (default: 60.0Hz).\n"); |
| 120 | fprintf(stderr, "\n"); |
| 121 | |
| 122 | fprintf(stderr, "Calculates VESA CVT (Coordinated Video Timing) modelines" |
| 123 | " for use with X.\n"); |
| 124 | } |
| 125 | |
| 126 | /* |
| 127 | * |
| 128 | */ |
| 129 | static void |
| 130 | PrintComment(DisplayModeRec * Mode, Bool CVT, Bool Reduced) |
| 131 | { |
| 132 | printf("# %dx%d %.2f Hz ", Mode->HDisplay, Mode->VDisplay, Mode->VRefresh); |
| 133 | |
| 134 | if (CVT) { |
| 135 | printf("(CVT %.2fM", |
| 136 | ((float) Mode->HDisplay * Mode->VDisplay) / 1000000.0); |
| 137 | |
| 138 | if (!(Mode->VDisplay % 3) && |
| 139 | ((Mode->VDisplay * 4 / 3) == Mode->HDisplay)) |
| 140 | printf("3"); |
| 141 | else if (!(Mode->VDisplay % 9) && |
| 142 | ((Mode->VDisplay * 16 / 9) == Mode->HDisplay)) |
| 143 | printf("9"); |
| 144 | else if (!(Mode->VDisplay % 10) && |
| 145 | ((Mode->VDisplay * 16 / 10) == Mode->HDisplay)) |
| 146 | printf("A"); |
| 147 | else if (!(Mode->VDisplay % 4) && |
| 148 | ((Mode->VDisplay * 5 / 4) == Mode->HDisplay)) |
| 149 | printf("4"); |
| 150 | else if (!(Mode->VDisplay % 9) && |
| 151 | ((Mode->VDisplay * 15 / 9) == Mode->HDisplay)) |
| 152 | printf("9"); |
| 153 | |
| 154 | if (Reduced) |
| 155 | printf("-R"); |
| 156 | |
| 157 | printf(") "); |
| 158 | } |
| 159 | else |
| 160 | printf("(CVT) "); |
| 161 | |
| 162 | printf("hsync: %.2f kHz; ", Mode->HSync); |
| 163 | printf("pclk: %.2f MHz", ((float) Mode->Clock) / 1000.0); |
| 164 | |
| 165 | printf("\n"); |
| 166 | } |
| 167 | |
| 168 | /* |
| 169 | * Originally grabbed from xf86Mode.c. |
| 170 | * |
| 171 | * Ignoring the actual Mode->name, as the user will want something solid |
| 172 | * to grab hold of. |
| 173 | */ |
| 174 | static void |
| 175 | PrintModeline(DisplayModePtr Mode, int HDisplay, int VDisplay, float VRefresh, |
| 176 | Bool Reduced) |
| 177 | { |
| 178 | if (Reduced) |
| 179 | printf("Modeline \"%dx%dR\" ", HDisplay, VDisplay); |
| 180 | else |
| 181 | printf("Modeline \"%dx%d_%.2f\" ", HDisplay, VDisplay, VRefresh); |
| 182 | |
| 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); |
| 186 | |
| 187 | if (Mode->Flags & V_INTERLACE) |
| 188 | printf(" interlace"); |
| 189 | if (Mode->Flags & V_PHSYNC) |
| 190 | printf(" +hsync"); |
| 191 | if (Mode->Flags & V_NHSYNC) |
| 192 | printf(" -hsync"); |
| 193 | if (Mode->Flags & V_PVSYNC) |
| 194 | printf(" +vsync"); |
| 195 | if (Mode->Flags & V_NVSYNC) |
| 196 | printf(" -vsync"); |
| 197 | |
| 198 | printf("\n"); |
| 199 | } |
| 200 | |
| 201 | /* |
| 202 | * |
| 203 | */ |
| 204 | int |
| 205 | main(int argc, char *argv[]) |
| 206 | { |
| 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; |
| 212 | int n; |
| 213 | |
| 214 | if ((argc < 3) || (argc > 7)) { |
| 215 | PrintUsage(argv[0]); |
| 216 | return 1; |
| 217 | } |
| 218 | |
| 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. |
| 222 | */ |
| 223 | for (n = 1; n < argc; n++) { |
| 224 | if (!strcmp(argv[n], "-r") || !strcmp(argv[n], "--reduced")) |
| 225 | Reduced = TRUE; |
| 226 | else if (!strcmp(argv[n], "-i") || !strcmp(argv[n], "--interlaced")) |
| 227 | Interlaced = TRUE; |
| 228 | else if (!strcmp(argv[n], "-v") || !strcmp(argv[n], "--verbose")) |
| 229 | Verbose = TRUE; |
| 230 | else if (!strcmp(argv[n], "-h") || !strcmp(argv[n], "--help")) { |
| 231 | PrintUsage(argv[0]); |
| 232 | return 0; |
| 233 | } |
| 234 | else if (!HDisplay) { |
| 235 | HDisplay = atoi(argv[n]); |
| 236 | if (!HDisplay) { |
| 237 | PrintUsage(argv[0]); |
| 238 | return 1; |
| 239 | } |
| 240 | } |
| 241 | else if (!VDisplay) { |
| 242 | VDisplay = atoi(argv[n]); |
| 243 | if (!VDisplay) { |
| 244 | PrintUsage(argv[0]); |
| 245 | return 1; |
| 246 | } |
| 247 | } |
| 248 | else if (!VRefresh) { |
| 249 | VRefresh = atof(argv[n]); |
| 250 | if (!VRefresh) { |
| 251 | PrintUsage(argv[0]); |
| 252 | return 1; |
| 253 | } |
| 254 | } |
| 255 | else { |
| 256 | PrintUsage(argv[0]); |
| 257 | return 1; |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | if (!HDisplay || !VDisplay) { |
| 262 | PrintUsage(argv[0]); |
| 263 | return 0; |
| 264 | } |
| 265 | |
| 266 | /* Default to 60.0Hz */ |
| 267 | if (!VRefresh) |
| 268 | VRefresh = 60.0; |
| 269 | |
| 270 | /* Horizontal timing is always a multiple of 8: round up. */ |
| 271 | if (HDisplay & 0x07) { |
| 272 | HDisplay &= ~0x07; |
| 273 | HDisplay += 8; |
| 274 | } |
| 275 | |
| 276 | if (Reduced) { |
| 277 | if ((VRefresh / 60.0) != floor(VRefresh / 60.0)) { |
| 278 | fprintf(stderr, |
| 279 | "\nERROR: Multiple of 60Hz refresh rate required for " |
| 280 | " reduced blanking.\n"); |
| 281 | PrintUsage(argv[0]); |
| 282 | return 0; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | IsCVT = CVTCheckStandard(HDisplay, VDisplay, VRefresh, Reduced, Verbose); |
| 287 | |
| 288 | Mode = xf86CVTMode(HDisplay, VDisplay, VRefresh, Reduced, Interlaced); |
| 289 | |
| 290 | PrintComment(Mode, IsCVT, Reduced); |
| 291 | PrintModeline(Mode, HDisplay, VDisplay, VRefresh, Reduced); |
| 292 | |
| 293 | return 0; |
| 294 | } |