xenocara/app/xvctl/xvctl.c

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/* $OpenBSD: xvctl.c,v 1.2 2009/05/02 19:18:13 oga Exp $ */
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/*
* Copyright (c) 2001 Marc Espie.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
* PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xvlib.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <err.h>
#include <string.h>
#include <ctype.h>
void
usage()
{
fprintf(stderr, "usage:\t%s\n\t%s\n\t%s\n",
"xvctl [-n] [-d display] [-s screen] [-A adaptor] variable ...",
"xvctl [-n] [-d display] [-s screen] [-A adaptor] -w variable=value ...",
"xvctl [-n] [-d display] [-s screen] [-A adaptor] -a");
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exit(1);
}
char *
reformat(char *name)
{
static char result[BUFSIZ];
char *s;
char *t;
if (strlcpy(result, name, sizeof result) >= sizeof result)
warnx("Name %s was truncated", name);
s = result;
if (strncmp(result, "XV_", 3) == 0)
s+=3;
for (t = s; *t; t++)
*t = tolower(*t);
return s;
}
XvAttribute *
findname(XvAttribute table[], int nattr, const char *name)
{
int i;
if (strncasecmp(name, "XV_", 3) == 0)
name +=3;
for (i = 0; i < nattr; i++) {
if (strcasecmp(table[i].name+3, name) == 0)
return table+i;
}
warnx("No such attribute %s", name);
return NULL;
}
void
printattribute(Display *dpy, XvPortID id, int nflag, XvAttribute *a)
{
Atom atom;
int v;
atom = XInternAtom(dpy, a->name, True);
if (atom != None)
if (Success == XvGetPortAttribute(dpy, id, atom, &v)) {
if (!nflag)
printf("%s = ", reformat(a->name));
printf("%d\n", v);
}
}
void
showall(Display *dpy, XvPortID id, int nflag, XvAttribute table[], int nattr)
{
int i;
for (i = 0; i < nattr; i++)
if (table[i].flags & XvGettable)
printattribute(dpy, id, nflag, table+i);
}
void
setvar(Display *dpy, XvPortID id, int nflag, XvAttribute table[], int nattr,
const char *name, int v)
{
XvAttribute *at;
Atom atom;
at = findname(table, nattr, name);
if (!at)
return;
if (!(at->flags & XvSettable)) {
warnx("Can't set %s", name);
return;
}
if ((at->max_value != -1 && v > at->max_value) || v < at->min_value) {
warnx("Value %d for %s out of range (%d-%d)", v, name,
at->min_value, at->max_value);
return;
}
atom = XInternAtom(dpy, at->name, True);
if (atom != None)
if (Success == XvSetPortAttribute(dpy, id, atom, v)) {
if (!nflag)
printattribute(dpy, id, nflag, at);
}
}
void
showvar(Display *dpy, XvPortID id, int nflag, XvAttribute table[], int nattr,
const char *name)
{
XvAttribute *at;
at = findname(table, nattr, name);
if (!at)
return;
if (!(at->flags & XvGettable)) {
warnx("Can't get %s", name);
return;
}
printattribute(dpy, id, nflag, at);
}
void
parse(Display *dpy, XvPortID id, int nflag, int wflag, XvAttribute table[],
int nattr, const char *s)
{
char buf[BUFSIZ];
char *cp;
if (strlcpy(buf, s, sizeof buf) >= sizeof(buf))
warnx("Buffer too small for %s", s);
cp = strchr(buf, '=');
if (cp != NULL) {
long v;
char *end;
char *tail;
if (!wflag)
errx(2, "Can't set variables without -w");
tail = cp;
while (tail > buf && isspace(tail[-1]))
tail--;
*tail = 0;
do {
cp++;
} while (isspace(*cp));
v = strtol(cp, &end, 0);
if (*end != 0) {
warnx("Bogus value: %s", cp);
return;
}
setvar(dpy, id, nflag, table, nattr, buf, v);
} else
showvar(dpy, id, nflag, table, nattr, buf);
}
char *
displayname(char *display)
{
return display ? display : XDisplayName(display);
}
int
main(int argc, char *argv[])
{
int ch;
int aflag = 0;
int nflag = 0;
int wflag = 0;
char *display = NULL;
int screen = -1;
int nscreens;
int nattr;
unsigned int nadaptors;
XvAdaptorInfo *ainfo;
XvAttribute *table;
int adaptor = 0;
Display *dpy;
unsigned int ver, rev, eventB, reqB, errorB;
while ((ch = getopt(argc, argv, "ad:ns:A:w")) != -1) {
switch(ch) {
case 'a':
aflag = 1;
break;
case 'd':
display = optarg;
break;
case 's':
screen = atoi(optarg);
break;
case 'A':
adaptor = atoi(optarg);
break;
case 'n':
nflag = 1;
break;
case 'w':
wflag = 1;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
dpy = XOpenDisplay(display);
if (!dpy)
errx(1, "Unable to open display %s", displayname(display));
if (Success != XvQueryExtension(dpy, &ver, &rev, &reqB, &eventB,
&errorB))
errx(1, "No X-Video extension on %s", displayname(display));
if (!nflag)
printf("X-Video extension version %i.%i on %s\n", ver, rev,
displayname(display));
nscreens = ScreenCount(dpy);
if (screen == -1) {
for (screen = 0; screen < nscreens; screen++) {
XvQueryAdaptors(dpy, RootWindow(dpy, screen),
&nadaptors, &ainfo);
if (nadaptors)
break;
}
}
if (screen >= nscreens)
errx(1, "Not a screen with adaptors");
if (adaptor > nadaptors)
errx(1, "No such adaptor");
table = XvQueryPortAttributes(dpy, ainfo[adaptor].base_id, &nattr);
if (argc == 0) {
if (!aflag)
usage();
showall(dpy, ainfo[adaptor].base_id, nflag, table, nattr);
}
for (; *argv != NULL; ++argv)
parse(dpy, ainfo[adaptor].base_id, nflag, wflag, table,
nattr, *argv);
XFree(table);
exit(0);
}