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/*
* Copyright 2005-2006 Luc Verhaegen.
* Copyright © 2021 Red Hat, Inc.
*
* 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.
*/
#include <xwayland-config.h>
#include <string.h>
#include <randrstr.h>
#include <libxcvt/libxcvt.h>
#include "xwayland-cvt.h"
static void
xwayland_modeinfo_from_cvt(xRRModeInfo *modeinfo,
int hdisplay, int vdisplay, float vrefresh,
Bool reduced, Bool interlaced)
{
struct libxcvt_mode_info *libxcvt_mode_info;
libxcvt_mode_info =
libxcvt_gen_mode_info(hdisplay, vdisplay, vrefresh, reduced, interlaced);
modeinfo->width = libxcvt_mode_info->hdisplay;
modeinfo->height = libxcvt_mode_info->vdisplay;
modeinfo->dotClock = libxcvt_mode_info->dot_clock * 1000.0;
modeinfo->hSyncStart = libxcvt_mode_info->hsync_start;
modeinfo->hSyncEnd = libxcvt_mode_info->hsync_end;
modeinfo->hTotal = libxcvt_mode_info->htotal;
modeinfo->vSyncStart = libxcvt_mode_info->vsync_start;
modeinfo->vSyncEnd = libxcvt_mode_info->vsync_end;
modeinfo->vTotal = libxcvt_mode_info->vtotal;
modeinfo->modeFlags = libxcvt_mode_info->mode_flags;
free(libxcvt_mode_info);
}
RRModePtr
xwayland_cvt(int hdisplay, int vdisplay, float vrefresh, Bool reduced,
Bool interlaced)
{
char name[128];
xRRModeInfo modeinfo = { 0, };
xwayland_modeinfo_from_cvt(&modeinfo,
hdisplay, vdisplay, vrefresh, reduced, interlaced);
/* Horizontal granularity in libxcvt is 8, so if our horizontal size is not
* divisible by 8, libxcvt will round it up, and we will advertise a wrong
* size to our XRandR clients.
* Force the width/height (i.e. simply increase blanking which should not
* hurt anything), keeping the rest of the CVT mode timings unchanged.
*/
modeinfo.width = hdisplay;
modeinfo.height = vdisplay;
snprintf(name, sizeof name, "%dx%d",
modeinfo.width, modeinfo.height);
modeinfo.nameLength = strlen(name);
return RRModeGet(&modeinfo, name);
}
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