746 lines
22 KiB
C
746 lines
22 KiB
C
/* $XdotOrg: xc/programs/Xserver/hw/xfree86/etc/gtf.c,v 1.2 2004/04/23 19:53:57 eich Exp $ */
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/* gtf.c Generate mode timings using the GTF Timing Standard
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*
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* gcc gtf.c -o gtf -lm -Wall
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*
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* Copyright (c) 2001, Andy Ritger aritger@nvidia.com
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* o Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* o Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* o Neither the name of NVIDIA nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
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* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*
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*
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* This program is based on the Generalized Timing Formula(GTF TM)
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* Standard Version: 1.0, Revision: 1.0
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*
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* The GTF Document contains the following Copyright information:
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*
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* Copyright (c) 1994, 1995, 1996 - Video Electronics Standards
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* Association. Duplication of this document within VESA member
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* companies for review purposes is permitted. All other rights
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* reserved.
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*
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* While every precaution has been taken in the preparation
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* of this standard, the Video Electronics Standards Association and
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* its contributors assume no responsibility for errors or omissions,
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* and make no warranties, expressed or implied, of functionality
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* of suitability for any purpose. The sample code contained within
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* this standard may be used without restriction.
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*
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*
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*
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* The GTF EXCEL(TM) SPREADSHEET, a sample (and the definitive)
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* implementation of the GTF Timing Standard, is available at:
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*
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* ftp://ftp.vesa.org/pub/GTF/GTF_V1R1.xls
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*
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*
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*
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* This program takes a desired resolution and vertical refresh rate,
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* and computes mode timings according to the GTF Timing Standard.
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* These mode timings can then be formatted as an XServer modeline
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* or a mode description for use by fbset(8).
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*
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*
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*
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* NOTES:
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*
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* The GTF allows for computation of "margins" (the visible border
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* surrounding the addressable video); on most non-overscan type
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* systems, the margin period is zero. I've implemented the margin
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* computations but not enabled it because 1) I don't really have
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* any experience with this, and 2) neither XServer modelines nor
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* fbset fb.modes provide an obvious way for margin timings to be
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* included in their mode descriptions (needs more investigation).
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*
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* The GTF provides for computation of interlaced mode timings;
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* I've implemented the computations but not enabled them, yet.
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* I should probably enable and test this at some point.
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*
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*
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*
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* TODO:
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*
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* o Add support for interlaced modes.
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*
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* o Implement the other portions of the GTF: compute mode timings
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* given either the desired pixel clock or the desired horizontal
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* frequency.
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*
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* o It would be nice if this were more general purpose to do things
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* outside the scope of the GTF: like generate double scan mode
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* timings, for example.
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*
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* o Printing digits to the right of the decimal point when the
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* digits are 0 annoys me.
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*
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* o Error checking.
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*
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*/
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/* $XFree86: xc/programs/Xserver/hw/xfree86/etc/gtf.c,v 1.2 2002/11/15 17:01:53tsi Exp $ */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#if defined(__Lynx__)
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#define rint(x) floor(x)
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#endif
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#define MARGIN_PERCENT 1.8 /* % of active vertical image */
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#define CELL_GRAN 8.0 /* assumed character cell granularity */
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#define MIN_PORCH 1 /* minimum front porch */
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#define V_SYNC_RQD 3 /* width of vsync in lines */
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#define H_SYNC_PERCENT 8.0 /* width of hsync as % of total line */
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#define MIN_VSYNC_PLUS_BP 550.0 /* min time of vsync + back porch (microsec) */
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#define M 600.0 /* blanking formula gradient */
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#define C 40.0 /* blanking formula offset */
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#define K 128.0 /* blanking formula scaling factor */
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#define J 20.0 /* blanking formula scaling factor */
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/* C' and M' are part of the Blanking Duty Cycle computation */
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#define C_PRIME (((C - J) * K/256.0) + J)
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#define M_PRIME (K/256.0 * M)
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/* struct definitions */
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typedef struct __mode
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{
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int hr, hss, hse, hfl;
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int vr, vss, vse, vfl;
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float pclk, h_freq, v_freq;
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} mode;
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typedef struct __options
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{
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int x, y;
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int xorgmode, fbmode;
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float v_freq;
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} options;
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/* prototypes */
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void print_value(int n, char *name, float val);
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void print_xf86_mode (mode *m);
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void print_fb_mode (mode *m);
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mode *vert_refresh (int h_pixels, int v_lines, float freq,
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int interlaced, int margins);
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options *parse_command_line (int argc, char *argv[]);
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/*
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* print_value() - print the result of the named computation; this is
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* useful when comparing against the GTF EXCEL spreadsheet.
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*/
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int global_verbose = 0;
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void print_value(int n, char *name, float val)
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{
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if (global_verbose) {
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printf("%2d: %-27s: %15f\n", n, name, val);
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}
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}
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/* print_xf86_mode() - print the XServer modeline, given mode timings. */
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void print_xf86_mode (mode *m)
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{
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printf ("\n");
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printf (" # %dx%d @ %.2f Hz (GTF) hsync: %.2f kHz; pclk: %.2f MHz\n",
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m->hr, m->vr, m->v_freq, m->h_freq, m->pclk);
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printf (" Modeline \"%dx%d_%.2f\" %.2f"
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" %d %d %d %d"
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" %d %d %d %d"
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" -HSync +Vsync\n\n",
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m->hr, m->vr, m->v_freq, m->pclk,
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m->hr, m->hss, m->hse, m->hfl,
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m->vr, m->vss, m->vse, m->vfl);
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}
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/*
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* print_fb_mode() - print a mode description in fbset(8) format;
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* see the fb.modes(8) manpage. The timing description used in
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* this is rather odd; they use "left and right margin" to refer
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* to the portion of the hblank before and after the sync pulse
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* by conceptually wrapping the portion of the blank after the pulse
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* to infront of the visible region; ie:
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*
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*
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* Timing description I'm accustomed to:
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*
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*
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*
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* <--------1--------> <--2--> <--3--> <--4-->
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* _________
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* |-------------------|_______| |_______
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*
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* R SS SE FL
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*
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* 1: visible image
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* 2: blank before sync (aka front porch)
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* 3: sync pulse
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* 4: blank after sync (aka back porch)
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* R: Resolution
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* SS: Sync Start
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* SE: Sync End
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* FL: Frame Length
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*
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*
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* But the fb.modes format is:
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*
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*
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* <--4--> <--------1--------> <--2--> <--3-->
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* _________
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* _______|-------------------|_______| |
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*
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* The fb.modes(8) manpage refers to <4> and <2> as the left and
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* right "margin" (as well as upper and lower margin in the vertical
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* direction) -- note that this has nothing to do with the term
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* "margin" used in the GTF Timing Standard.
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*
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* XXX always prints the 32 bit mode -- should I provide a command
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* line option to specify the bpp? It's simple enough for a user
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* to edit the mode description after it's generated.
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*/
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void print_fb_mode (mode *m)
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{
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printf ("\n");
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printf ("mode \"%dx%d %.2fHz 32bit (GTF)\"\n",
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m->hr, m->vr, m->v_freq);
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printf (" # PCLK: %.2f MHz, H: %.2f kHz, V: %.2f Hz\n",
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m->pclk, m->h_freq, m->v_freq);
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printf (" geometry %d %d %d %d 32\n",
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m->hr, m->vr, m->hr, m->vr);
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printf (" timings %d %d %d %d %d %d %d\n",
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(int) rint(1000000.0/m->pclk),/* pixclock in picoseconds */
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m->hfl - m->hse, /* left margin (in pixels) */
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m->hss - m->hr, /* right margin (in pixels) */
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m->vfl - m->vse, /* upper margin (in pixel lines) */
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m->vss - m->vr, /* lower margin (in pixel lines) */
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m->hse - m->hss, /* horizontal sync length (pixels) */
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m->vse - m->vss); /* vert sync length (pixel lines) */
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printf (" hsync low\n");
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printf (" vsync high\n");
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printf ("endmode\n\n");
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}
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/*
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* vert_refresh() - as defined by the GTF Timing Standard, compute the
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* Stage 1 Parameters using the vertical refresh frequency. In other
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* words: input a desired resolution and desired refresh rate, and
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* output the GTF mode timings.
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*
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* XXX All the code is in place to compute interlaced modes, but I don't
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* feel like testing it right now.
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*
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* XXX margin computations are implemented but not tested (nor used by
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* XServer of fbset mode descriptions, from what I can tell).
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*/
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mode *vert_refresh (int h_pixels, int v_lines, float freq,
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int interlaced, int margins)
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{
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float h_pixels_rnd;
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float v_lines_rnd;
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float v_field_rate_rqd;
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float top_margin;
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float bottom_margin;
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float interlace;
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float h_period_est;
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float vsync_plus_bp;
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float v_back_porch;
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float total_v_lines;
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float v_field_rate_est;
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float h_period;
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float v_field_rate;
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float v_frame_rate;
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float left_margin;
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float right_margin;
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float total_active_pixels;
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float ideal_duty_cycle;
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float h_blank;
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float total_pixels;
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float pixel_freq;
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float h_freq;
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float h_sync;
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float h_front_porch;
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float v_odd_front_porch_lines;
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mode *m = (mode*) malloc (sizeof (mode));
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/* 1. In order to give correct results, the number of horizontal
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* pixels requested is first processed to ensure that it is divisible
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* by the character size, by rounding it to the nearest character
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* cell boundary:
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*
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* [H PIXELS RND] = ((ROUND([H PIXELS]/[CELL GRAN RND],0))*[CELLGRAN RND])
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*/
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h_pixels_rnd = rint((float) h_pixels / CELL_GRAN) * CELL_GRAN;
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print_value(1, "[H PIXELS RND]", h_pixels_rnd);
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/* 2. If interlace is requested, the number of vertical lines assumed
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* by the calculation must be halved, as the computation calculates
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* the number of vertical lines per field. In either case, the
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* number of lines is rounded to the nearest integer.
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*
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* [V LINES RND] = IF([INT RQD?]="y", ROUND([V LINES]/2,0),
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* ROUND([V LINES],0))
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*/
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v_lines_rnd = interlaced ?
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rint((float) v_lines) / 2.0 :
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rint((float) v_lines);
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print_value(2, "[V LINES RND]", v_lines_rnd);
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/* 3. Find the frame rate required:
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*
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* [V FIELD RATE RQD] = IF([INT RQD?]="y", [I/P FREQ RQD]*2,
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* [I/P FREQ RQD])
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*/
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v_field_rate_rqd = interlaced ? (freq * 2.0) : (freq);
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print_value(3, "[V FIELD RATE RQD]", v_field_rate_rqd);
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/* 4. Find number of lines in Top margin:
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*
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* [TOP MARGIN (LINES)] = IF([MARGINS RQD?]="Y",
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* ROUND(([MARGIN%]/100*[V LINES RND]),0),
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* 0)
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*/
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top_margin = margins ? rint(MARGIN_PERCENT / 100.0 * v_lines_rnd) : (0.0);
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print_value(4, "[TOP MARGIN (LINES)]", top_margin);
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/* 5. Find number of lines in Bottom margin:
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*
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* [BOT MARGIN (LINES)] = IF([MARGINS RQD?]="Y",
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* ROUND(([MARGIN%]/100*[V LINES RND]),0),
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* 0)
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*/
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bottom_margin = margins ? rint(MARGIN_PERCENT/100.0 * v_lines_rnd) : (0.0);
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print_value(5, "[BOT MARGIN (LINES)]", bottom_margin);
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/* 6. If interlace is required, then set variable [INTERLACE]=0.5:
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*
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* [INTERLACE]=(IF([INT RQD?]="y",0.5,0))
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*/
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interlace = interlaced ? 0.5 : 0.0;
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print_value(6, "[INTERLACE]", interlace);
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/* 7. Estimate the Horizontal period
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*
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* [H PERIOD EST] = ((1/[V FIELD RATE RQD]) - [MIN VSYNC+BP]/1000000) /
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* ([V LINES RND] + (2*[TOP MARGIN (LINES)]) +
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* [MIN PORCH RND]+[INTERLACE]) * 1000000
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*/
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h_period_est = (((1.0/v_field_rate_rqd) - (MIN_VSYNC_PLUS_BP/1000000.0))
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/ (v_lines_rnd + (2*top_margin) + MIN_PORCH + interlace)
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* 1000000.0);
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print_value(7, "[H PERIOD EST]", h_period_est);
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/* 8. Find the number of lines in V sync + back porch:
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*
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* [V SYNC+BP] = ROUND(([MIN VSYNC+BP]/[H PERIOD EST]),0)
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*/
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vsync_plus_bp = rint(MIN_VSYNC_PLUS_BP/h_period_est);
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print_value(8, "[V SYNC+BP]", vsync_plus_bp);
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/* 9. Find the number of lines in V back porch alone:
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*
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* [V BACK PORCH] = [V SYNC+BP] - [V SYNC RND]
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*
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* XXX is "[V SYNC RND]" a typo? should be [V SYNC RQD]?
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*/
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v_back_porch = vsync_plus_bp - V_SYNC_RQD;
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print_value(9, "[V BACK PORCH]", v_back_porch);
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/* 10. Find the total number of lines in Vertical field period:
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*
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* [TOTAL V LINES] = [V LINES RND] + [TOP MARGIN (LINES)] +
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* [BOT MARGIN (LINES)] + [V SYNC+BP] + [INTERLACE] +
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* [MIN PORCH RND]
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*/
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total_v_lines = v_lines_rnd + top_margin + bottom_margin + vsync_plus_bp +
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interlace + MIN_PORCH;
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print_value(10, "[TOTAL V LINES]", total_v_lines);
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/* 11. Estimate the Vertical field frequency:
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*
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* [V FIELD RATE EST] = 1 / [H PERIOD EST] / [TOTAL V LINES] * 1000000
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*/
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v_field_rate_est = 1.0 / h_period_est / total_v_lines * 1000000.0;
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print_value(11, "[V FIELD RATE EST]", v_field_rate_est);
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/* 12. Find the actual horizontal period:
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*
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* [H PERIOD] = [H PERIOD EST] / ([V FIELD RATE RQD] / [V FIELD RATE EST])
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*/
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h_period = h_period_est / (v_field_rate_rqd / v_field_rate_est);
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print_value(12, "[H PERIOD]", h_period);
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/* 13. Find the actual Vertical field frequency:
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*
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* [V FIELD RATE] = 1 / [H PERIOD] / [TOTAL V LINES] * 1000000
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*/
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v_field_rate = 1.0 / h_period / total_v_lines * 1000000.0;
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print_value(13, "[V FIELD RATE]", v_field_rate);
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/* 14. Find the Vertical frame frequency:
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*
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* [V FRAME RATE] = (IF([INT RQD?]="y", [V FIELD RATE]/2, [V FIELD RATE]))
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*/
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v_frame_rate = interlaced ? v_field_rate / 2.0 : v_field_rate;
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print_value(14, "[V FRAME RATE]", v_frame_rate);
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/* 15. Find number of pixels in left margin:
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*
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* [LEFT MARGIN (PIXELS)] = (IF( [MARGINS RQD?]="Y",
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* (ROUND( ([H PIXELS RND] * [MARGIN%] / 100 /
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* [CELL GRAN RND]),0)) * [CELL GRAN RND],
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* 0))
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*/
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left_margin = margins ?
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rint(h_pixels_rnd * MARGIN_PERCENT / 100.0 / CELL_GRAN) * CELL_GRAN :
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0.0;
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print_value(15, "[LEFT MARGIN (PIXELS)]", left_margin);
|
|
|
|
|
|
/* 16. Find number of pixels in right margin:
|
|
*
|
|
* [RIGHT MARGIN (PIXELS)] = (IF( [MARGINS RQD?]="Y",
|
|
* (ROUND( ([H PIXELS RND] * [MARGIN%] / 100 /
|
|
* [CELL GRAN RND]),0)) * [CELL GRAN RND],
|
|
* 0))
|
|
*/
|
|
|
|
right_margin = margins ?
|
|
rint(h_pixels_rnd * MARGIN_PERCENT / 100.0 / CELL_GRAN) * CELL_GRAN :
|
|
0.0;
|
|
|
|
print_value(16, "[RIGHT MARGIN (PIXELS)]", right_margin);
|
|
|
|
|
|
/* 17. Find total number of active pixels in image and left and right
|
|
* margins:
|
|
*
|
|
* [TOTAL ACTIVE PIXELS] = [H PIXELS RND] + [LEFT MARGIN (PIXELS)] +
|
|
* [RIGHT MARGIN (PIXELS)]
|
|
*/
|
|
|
|
total_active_pixels = h_pixels_rnd + left_margin + right_margin;
|
|
|
|
print_value(17, "[TOTAL ACTIVE PIXELS]", total_active_pixels);
|
|
|
|
|
|
/* 18. Find the ideal blanking duty cycle from the blanking duty cycle
|
|
* equation:
|
|
*
|
|
* [IDEAL DUTY CYCLE] = [C'] - ([M']*[H PERIOD]/1000)
|
|
*/
|
|
|
|
ideal_duty_cycle = C_PRIME - (M_PRIME * h_period / 1000.0);
|
|
|
|
print_value(18, "[IDEAL DUTY CYCLE]", ideal_duty_cycle);
|
|
|
|
|
|
/* 19. Find the number of pixels in the blanking time to the nearest
|
|
* double character cell:
|
|
*
|
|
* [H BLANK (PIXELS)] = (ROUND(([TOTAL ACTIVE PIXELS] *
|
|
* [IDEAL DUTY CYCLE] /
|
|
* (100-[IDEAL DUTY CYCLE]) /
|
|
* (2*[CELL GRAN RND])), 0))
|
|
* * (2*[CELL GRAN RND])
|
|
*/
|
|
|
|
h_blank = rint(total_active_pixels *
|
|
ideal_duty_cycle /
|
|
(100.0 - ideal_duty_cycle) /
|
|
(2.0 * CELL_GRAN)) * (2.0 * CELL_GRAN);
|
|
|
|
print_value(19, "[H BLANK (PIXELS)]", h_blank);
|
|
|
|
|
|
/* 20. Find total number of pixels:
|
|
*
|
|
* [TOTAL PIXELS] = [TOTAL ACTIVE PIXELS] + [H BLANK (PIXELS)]
|
|
*/
|
|
|
|
total_pixels = total_active_pixels + h_blank;
|
|
|
|
print_value(20, "[TOTAL PIXELS]", total_pixels);
|
|
|
|
|
|
/* 21. Find pixel clock frequency:
|
|
*
|
|
* [PIXEL FREQ] = [TOTAL PIXELS] / [H PERIOD]
|
|
*/
|
|
|
|
pixel_freq = total_pixels / h_period;
|
|
|
|
print_value(21, "[PIXEL FREQ]", pixel_freq);
|
|
|
|
|
|
/* 22. Find horizontal frequency:
|
|
*
|
|
* [H FREQ] = 1000 / [H PERIOD]
|
|
*/
|
|
|
|
h_freq = 1000.0 / h_period;
|
|
|
|
print_value(22, "[H FREQ]", h_freq);
|
|
|
|
|
|
|
|
/* Stage 1 computations are now complete; I should really pass
|
|
the results to another function and do the Stage 2
|
|
computations, but I only need a few more values so I'll just
|
|
append the computations here for now */
|
|
|
|
|
|
|
|
/* 17. Find the number of pixels in the horizontal sync period:
|
|
*
|
|
* [H SYNC (PIXELS)] =(ROUND(([H SYNC%] / 100 * [TOTAL PIXELS] /
|
|
* [CELL GRAN RND]),0))*[CELL GRAN RND]
|
|
*/
|
|
|
|
h_sync = rint(H_SYNC_PERCENT/100.0 * total_pixels / CELL_GRAN) * CELL_GRAN;
|
|
|
|
print_value(17, "[H SYNC (PIXELS)]", h_sync);
|
|
|
|
|
|
/* 18. Find the number of pixels in the horizontal front porch period:
|
|
*
|
|
* [H FRONT PORCH (PIXELS)] = ([H BLANK (PIXELS)]/2)-[H SYNC (PIXELS)]
|
|
*/
|
|
|
|
h_front_porch = (h_blank / 2.0) - h_sync;
|
|
|
|
print_value(18, "[H FRONT PORCH (PIXELS)]", h_front_porch);
|
|
|
|
|
|
/* 36. Find the number of lines in the odd front porch period:
|
|
*
|
|
* [V ODD FRONT PORCH(LINES)]=([MIN PORCH RND]+[INTERLACE])
|
|
*/
|
|
|
|
v_odd_front_porch_lines = MIN_PORCH + interlace;
|
|
|
|
print_value(36, "[V ODD FRONT PORCH(LINES)]", v_odd_front_porch_lines);
|
|
|
|
|
|
/* finally, pack the results in the mode struct */
|
|
|
|
m->hr = (int) (h_pixels_rnd);
|
|
m->hss = (int) (h_pixels_rnd + h_front_porch);
|
|
m->hse = (int) (h_pixels_rnd + h_front_porch + h_sync);
|
|
m->hfl = (int) (total_pixels);
|
|
|
|
m->vr = (int) (v_lines_rnd);
|
|
m->vss = (int) (v_lines_rnd + v_odd_front_porch_lines);
|
|
m->vse = (int) (int) (v_lines_rnd + v_odd_front_porch_lines + V_SYNC_RQD);
|
|
m->vfl = (int) (total_v_lines);
|
|
|
|
m->pclk = pixel_freq;
|
|
m->h_freq = h_freq;
|
|
m->v_freq = freq;
|
|
|
|
return (m);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
* parse_command_line() - parse the command line and return an
|
|
* alloced structure containing the results. On error print usage
|
|
* and return NULL.
|
|
*/
|
|
|
|
options *parse_command_line (int argc, char *argv[])
|
|
{
|
|
int n;
|
|
|
|
options *o = (options *) calloc (1, sizeof (options));
|
|
|
|
if (argc < 4) goto bad_option;
|
|
|
|
o->x = atoi (argv[1]);
|
|
o->y = atoi (argv[2]);
|
|
o->v_freq = atof (argv[3]);
|
|
|
|
/* XXX should check for errors in the above */
|
|
|
|
n = 4;
|
|
|
|
while (n < argc) {
|
|
if ((strcmp (argv[n], "-v") == 0) ||
|
|
(strcmp (argv[n], "--verbose") == 0)) {
|
|
global_verbose = 1;
|
|
} else if ((strcmp (argv[n], "-f") == 0) ||
|
|
(strcmp (argv[n], "--fbmode") == 0)) {
|
|
o->fbmode = 1;
|
|
} else if ((strcmp (argv[n], "-x") == 0) ||
|
|
(strcmp (argv[n], "--xorgmode") == 0) ||
|
|
(strcmp (argv[n], "--xf86mode") == 0)) {
|
|
o->xorgmode = 1;
|
|
} else {
|
|
goto bad_option;
|
|
}
|
|
|
|
n++;
|
|
}
|
|
|
|
/* if neither xorgmode nor fbmode were requested, default to
|
|
xorgmode */
|
|
|
|
if (!o->fbmode && !o->xorgmode) o->xorgmode = 1;
|
|
|
|
return (o);
|
|
|
|
bad_option:
|
|
|
|
fprintf (stderr, "\n");
|
|
fprintf (stderr, "usage: %s x y refresh [-v|--verbose] "
|
|
"[-f|--fbmode] [-x|--xorgmode]\n", argv[0]);
|
|
|
|
fprintf (stderr, "\n");
|
|
|
|
fprintf (stderr, " x : the desired horizontal "
|
|
"resolution (required)\n");
|
|
fprintf (stderr, " y : the desired vertical "
|
|
"resolution (required)\n");
|
|
fprintf (stderr, " refresh : the desired refresh "
|
|
"rate (required)\n");
|
|
fprintf (stderr, " -v|--verbose : enable verbose printouts "
|
|
"(traces each step of the computation)\n");
|
|
fprintf (stderr, " -f|--fbmode : output an fbset(8)-style mode "
|
|
"description\n");
|
|
fprintf (stderr, " -x|--xorgmode : output an "__XSERVERNAME__"-style mode "
|
|
"description (this is the default\n"
|
|
" if no mode description is requested)\n");
|
|
|
|
fprintf (stderr, "\n");
|
|
|
|
free (o);
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
int main (int argc, char *argv[])
|
|
{
|
|
mode *m;
|
|
options *o;
|
|
|
|
o = parse_command_line (argc, argv);
|
|
if (!o) exit (1);
|
|
|
|
m = vert_refresh (o->x, o->y, o->v_freq, 0, 0);
|
|
if (!m) exit (1);
|
|
|
|
if (o->xorgmode)
|
|
print_xf86_mode(m);
|
|
|
|
if (o->fbmode)
|
|
print_fb_mode(m);
|
|
|
|
return 0;
|
|
|
|
}
|