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