Commit 437b385c authored by Luc Verhaegen's avatar Luc Verhaegen

Bring the cvt utility up to date with bug #5386 changes. Fix 2 issues with

    the generator routine: the allocated modeline wasn't nulled and
    mode->name's \0 wasn't copied over. PrintModeLine was rewritten and
    HDisplay gets rounded up to character width instead of refused.
parent 8f3c69dc
2006-01-31 Luc Verhaegen <libv@skynet.be>
* hw/xfree86/utils/cvt/.cvsignore:
* hw/xfree86/utils/cvt/cvt.c: (xf86CVTMode), (CVTCheckStandard),
(PrintModeline), (main):
Bring the cvt utility up to date with bug #5386 changes.
Fix 2 issues with the generator routine: the allocated modeline wasn't
nulled and mode->name's \0 wasn't copied over.
PrintModeLine was rewritten and HDisplay gets rounded up to
character width instead of refused.
2006-01-31 Luc Verhaegen <libv@skynet.be>
* hw/xfree86/common/xf86Mode.c: (xf86CheckModeForMonitor):
......
/*
* Copyright (c) 2005 by Luc Verhaegen.
* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
* 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"),
......@@ -20,78 +19,15 @@
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of the copyright holder(s)
* and author(s) shall not be used in advertising or otherwise to promote
* the sale, use or other dealings in this Software without prior written
* authorization from the copyright holder(s) and author(s).
*/
/*
* Calculate VESA CVT standard timing modelines.
*
* My own copyright is added. This is only there for the standalone version.
* I don't want to polute the xf86Mode.c license.
*
*/
#include "xf86.h"
/* Standalone VESA CVT standard timing modelines generator. */
#include "xf86.h"
/*
* Grabbed from xf86Mode.c from the Xorg tree. Hence the copyright and license.
* Generate a CVT standard mode from HDisplay, VDisplay and VRefresh.
*
* Altered for stdout printing.
*/
static void
add(char **p, char *new)
{
*p = xnfrealloc(*p, strlen(*p) + strlen(new) + 2);
strcat(*p, " ");
strcat(*p, new);
}
static void
PrintModeline(DisplayModePtr mode)
{
char tmp[256];
char *flags = xnfcalloc(1, 1);
if (mode->HSkew) {
snprintf(tmp, 256, "hskew %i", mode->HSkew);
add(&flags, tmp);
}
if (mode->VScan) {
snprintf(tmp, 256, "vscan %i", mode->VScan);
add(&flags, tmp);
}
if (mode->Flags & V_INTERLACE) add(&flags, "interlace");
if (mode->Flags & V_CSYNC) add(&flags, "composite");
if (mode->Flags & V_DBLSCAN) add(&flags, "doublescan");
if (mode->Flags & V_BCAST) add(&flags, "bcast");
if (mode->Flags & V_PHSYNC) add(&flags, "+hsync");
if (mode->Flags & V_NHSYNC) add(&flags, "-hsync");
if (mode->Flags & V_PVSYNC) add(&flags, "+vsync");
if (mode->Flags & V_NVSYNC) add(&flags, "-vsync");
if (mode->Flags & V_PCSYNC) add(&flags, "+csync");
if (mode->Flags & V_NCSYNC) add(&flags, "-csync");
#if 0
if (mode->Flags & V_CLKDIV2) add(&flags, "vclk/2");
#endif
printf("Modeline \"%s\" %6.2f %i %i %i %i %i %i %i %i%s\n",
mode->name, mode->Clock/1000., mode->HDisplay,
mode->HSyncStart, mode->HSyncEnd, mode->HTotal,
mode->VDisplay, mode->VSyncStart, mode->VSyncEnd,
mode->VTotal, flags);
xfree(flags);
}
/*
* New code... Well, somewhat.
*/
/*
* These calculations are stolen from the CVT calculation spreadsheet written
* by Graham Loveridge. He seems to be claiming no copyright and there seems to
* be no license attached to this. He apparently just wants to see his name
......@@ -110,10 +46,10 @@ PrintModeline(DisplayModePtr mode)
* blanking instead of the overscan colour, and since the Crtc* values will
* probably get altered after us, we will disable margins altogether. With
* these calculations, Margins will plainly expand H/VDisplay, and we don't
* want that.
* want that. -- libv
*
*/
static DisplayModeRec *
static DisplayModePtr
xf86CVTMode(int HDisplay, int VDisplay, float VRefresh, Bool Reduced,
Bool Interlaced)
{
......@@ -140,6 +76,8 @@ xf86CVTMode(int HDisplay, int VDisplay, float VRefresh, Bool Reduced,
int VDisplayRnd, VMargin, VSync;
float Interlace; /* Please rename this */
memset(Mode, 0, sizeof(DisplayModeRec));
/* CVT default is 60.0Hz */
if (!VRefresh)
VRefresh = 60.0;
......@@ -329,16 +267,14 @@ xf86CVTMode(int HDisplay, int VDisplay, float VRefresh, Bool Reduced,
if (Interlaced)
Mode->VTotal *= 2;
/* Fill in Mode parameters */
{
char Name[256];
Name[0] = 0;
if (Reduced)
snprintf(Name, 256, "%dx%dR", HDisplay, VDisplay);
else
snprintf(Name, 256, "%dx%d_%.2f", HDisplay, VDisplay, VRefresh);
snprintf(Name, 256, "%dx%d", HDisplay, VDisplay);
Mode->name = xnfalloc(strlen(Name) + 1);
memcpy(Mode->name, Name, strlen(Name));
memcpy(Mode->name, Name, strlen(Name) + 1);
}
if (Reduced)
......@@ -352,12 +288,11 @@ xf86CVTMode(int HDisplay, int VDisplay, float VRefresh, Bool Reduced,
return Mode;
}
/*
* Quickly check wether this is a CVT standard mode.
*/
static Bool
xf86CVTCheckStandard(int HDisplay, int VDisplay, float VRefresh, Bool Reduced,
CVTCheckStandard(int HDisplay, int VDisplay, float VRefresh, Bool Reduced,
Bool Verbose)
{
Bool IsCVT = TRUE;
......@@ -453,6 +388,40 @@ PrintComment(DisplayModeRec *Mode, Bool CVT, Bool Reduced)
}
/*
* 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");
}
/*
*
*/
......@@ -506,12 +475,10 @@ main (int argc, char *argv[])
if (!VRefresh)
VRefresh = 60.0;
/* Enforce hard limitation */
if (HDisplay % 8) {
fprintf(stderr, "\nERROR: Horizontal Resolution needs to be a "
"multiple of 8.\n");
PrintUsage(argv[0]);
return 0;
/* Horizontal timing is always a multiple of 8: round up. */
if (HDisplay & 0x07) {
HDisplay &= ~0x07;
HDisplay += 8;
}
if (Reduced && (VRefresh != 60.0)) {
......@@ -521,12 +488,12 @@ main (int argc, char *argv[])
return 0;
}
IsCVT = xf86CVTCheckStandard(HDisplay, VDisplay, VRefresh, Reduced, Verbose);
IsCVT = CVTCheckStandard(HDisplay, VDisplay, VRefresh, Reduced, Verbose);
Mode = xf86CVTMode(HDisplay, VDisplay, VRefresh, Reduced, Interlaced);
PrintComment(Mode, IsCVT, Reduced);
PrintModeline(Mode);
PrintModeline(Mode, HDisplay, VDisplay, VRefresh, Reduced);
return 0;
}
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