294 lines
8.3 KiB
C
294 lines
8.3 KiB
C
/*
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* Copyright 2005-2006 Luc Verhaegen.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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/* Standalone VESA CVT standard timing modelines generator. */
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#include "xf86.h"
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/* FatalError implementation used by the server code we built in */
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void
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FatalError(const char *f, ...)
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{
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va_list args;
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va_start(args, f);
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vfprintf(stderr, f, args);
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va_end(args);
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exit(1);
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}
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/* xnfalloc implementation used by the server code we built in */
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pointer
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XNFalloc(unsigned long n)
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{
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pointer r;
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r = malloc(n);
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if (!r) {
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perror("malloc failed");
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exit(1);
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}
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return r;
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}
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/* xnfcalloc implementation used by the server code we built in */
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pointer
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XNFcalloc(unsigned long n)
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{
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pointer r;
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r = calloc(1, n);
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if (!r) {
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perror("calloc failed");
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exit(1);
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}
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return r;
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}
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/*
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* Quickly check wether this is a CVT standard mode.
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*/
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static Bool
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CVTCheckStandard(int HDisplay, int VDisplay, float VRefresh, Bool Reduced,
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Bool Verbose)
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{
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Bool IsCVT = TRUE;
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if ((!(VDisplay % 3) && ((VDisplay * 4 / 3) == HDisplay)) ||
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(!(VDisplay % 9) && ((VDisplay * 16 / 9) == HDisplay)) ||
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(!(VDisplay % 10) && ((VDisplay * 16 / 10) == HDisplay)) ||
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(!(VDisplay % 4) && ((VDisplay * 5 / 4) == HDisplay)) ||
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(!(VDisplay % 9) && ((VDisplay * 15 / 9) == HDisplay)));
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else {
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if (Verbose)
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fprintf(stderr, "Warning: Aspect Ratio is not CVT standard.\n");
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IsCVT = FALSE;
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}
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if ((VRefresh != 50.0) && (VRefresh != 60.0) &&
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(VRefresh != 75.0) && (VRefresh != 85.0)) {
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if (Verbose)
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fprintf(stderr, "Warning: Refresh Rate is not CVT standard "
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"(50, 60, 75 or 85Hz).\n");
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IsCVT = FALSE;
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}
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return IsCVT;
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}
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/*
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* I'm not documenting --interlaced for obvious reasons, even though I did
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* implement it. I also can't deny having looked at gtf here.
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*/
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static void
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PrintUsage(char *Name)
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{
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fprintf(stderr, "\n");
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fprintf(stderr, "usage: %s [-v|--verbose] [-r|--reduced] X Y [refresh]\n",
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Name);
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fprintf(stderr, "\n");
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fprintf(stderr, " -v|--verbose : Warn about CVT standard adherance.\n");
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fprintf(stderr, " -r|--reduced : Create a mode with reduced blanking "
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"(default: normal blanking).\n");
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fprintf(stderr, " X : Desired horizontal resolution "
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"(multiple of 8, required).\n");
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fprintf(stderr,
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" Y : Desired vertical resolution (required).\n");
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fprintf(stderr,
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" refresh : Desired refresh rate (default: 60.0Hz).\n");
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fprintf(stderr, "\n");
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fprintf(stderr, "Calculates VESA CVT (Coordinated Video Timing) modelines"
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" for use with X.\n");
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}
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/*
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*
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*/
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static void
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PrintComment(DisplayModeRec * Mode, Bool CVT, Bool Reduced)
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{
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printf("# %dx%d %.2f Hz ", Mode->HDisplay, Mode->VDisplay, Mode->VRefresh);
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if (CVT) {
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printf("(CVT %.2fM",
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((float) Mode->HDisplay * Mode->VDisplay) / 1000000.0);
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if (!(Mode->VDisplay % 3) &&
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((Mode->VDisplay * 4 / 3) == Mode->HDisplay))
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printf("3");
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else if (!(Mode->VDisplay % 9) &&
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((Mode->VDisplay * 16 / 9) == Mode->HDisplay))
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printf("9");
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else if (!(Mode->VDisplay % 10) &&
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((Mode->VDisplay * 16 / 10) == Mode->HDisplay))
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printf("A");
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else if (!(Mode->VDisplay % 4) &&
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((Mode->VDisplay * 5 / 4) == Mode->HDisplay))
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printf("4");
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else if (!(Mode->VDisplay % 9) &&
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((Mode->VDisplay * 15 / 9) == Mode->HDisplay))
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printf("9");
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if (Reduced)
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printf("-R");
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printf(") ");
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}
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else
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printf("(CVT) ");
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printf("hsync: %.2f kHz; ", Mode->HSync);
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printf("pclk: %.2f MHz", ((float) Mode->Clock) / 1000.0);
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printf("\n");
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}
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/*
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* Originally grabbed from xf86Mode.c.
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*
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* Ignoring the actual Mode->name, as the user will want something solid
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* to grab hold of.
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*/
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static void
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PrintModeline(DisplayModePtr Mode, int HDisplay, int VDisplay, float VRefresh,
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Bool Reduced)
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{
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if (Reduced)
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printf("Modeline \"%dx%dR\" ", HDisplay, VDisplay);
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else
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printf("Modeline \"%dx%d_%.2f\" ", HDisplay, VDisplay, VRefresh);
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printf("%6.2f %i %i %i %i %i %i %i %i", Mode->Clock / 1000.,
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Mode->HDisplay, Mode->HSyncStart, Mode->HSyncEnd, Mode->HTotal,
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Mode->VDisplay, Mode->VSyncStart, Mode->VSyncEnd, Mode->VTotal);
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if (Mode->Flags & V_INTERLACE)
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printf(" interlace");
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if (Mode->Flags & V_PHSYNC)
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printf(" +hsync");
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if (Mode->Flags & V_NHSYNC)
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printf(" -hsync");
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if (Mode->Flags & V_PVSYNC)
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printf(" +vsync");
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if (Mode->Flags & V_NVSYNC)
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printf(" -vsync");
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printf("\n");
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}
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/*
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*
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*/
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int
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main(int argc, char *argv[])
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{
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DisplayModeRec *Mode;
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int HDisplay = 0, VDisplay = 0;
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float VRefresh = 0.0;
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Bool Reduced = FALSE, Verbose = FALSE, IsCVT;
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Bool Interlaced = FALSE;
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int n;
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if ((argc < 3) || (argc > 7)) {
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PrintUsage(argv[0]);
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return 1;
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}
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/* This doesn't filter out bad flags properly. Bad flags get passed down
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* to atoi/atof, which then return 0, so that these variables can get
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* filled next time round. So this is just a cosmetic problem.
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*/
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for (n = 1; n < argc; n++) {
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if (!strcmp(argv[n], "-r") || !strcmp(argv[n], "--reduced"))
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Reduced = TRUE;
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else if (!strcmp(argv[n], "-i") || !strcmp(argv[n], "--interlaced"))
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Interlaced = TRUE;
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else if (!strcmp(argv[n], "-v") || !strcmp(argv[n], "--verbose"))
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Verbose = TRUE;
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else if (!strcmp(argv[n], "-h") || !strcmp(argv[n], "--help")) {
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PrintUsage(argv[0]);
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return 0;
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}
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else if (!HDisplay) {
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HDisplay = atoi(argv[n]);
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if (!HDisplay) {
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PrintUsage(argv[0]);
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return 1;
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}
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}
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else if (!VDisplay) {
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VDisplay = atoi(argv[n]);
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if (!VDisplay) {
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PrintUsage(argv[0]);
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return 1;
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}
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}
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else if (!VRefresh) {
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VRefresh = atof(argv[n]);
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if (!VRefresh) {
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PrintUsage(argv[0]);
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return 1;
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}
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}
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else {
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PrintUsage(argv[0]);
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return 1;
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}
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}
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if (!HDisplay || !VDisplay) {
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PrintUsage(argv[0]);
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return 0;
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}
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/* Default to 60.0Hz */
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if (!VRefresh)
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VRefresh = 60.0;
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/* Horizontal timing is always a multiple of 8: round up. */
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if (HDisplay & 0x07) {
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HDisplay &= ~0x07;
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HDisplay += 8;
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}
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if (Reduced) {
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if ((VRefresh / 60.0) != floor(VRefresh / 60.0)) {
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fprintf(stderr,
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"\nERROR: Multiple of 60Hz refresh rate required for "
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" reduced blanking.\n");
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PrintUsage(argv[0]);
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return 0;
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}
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}
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IsCVT = CVTCheckStandard(HDisplay, VDisplay, VRefresh, Reduced, Verbose);
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Mode = xf86CVTMode(HDisplay, VDisplay, VRefresh, Reduced, Interlaced);
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PrintComment(Mode, IsCVT, Reduced);
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PrintModeline(Mode, HDisplay, VDisplay, VRefresh, Reduced);
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return 0;
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}
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