2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 #include <pulsecore/macro.h>
32 #include <xcb/xproto.h>
33 #include <xcb/xcb_atom.h>
35 #define PA_XCB_FORMAT 8
37 static xcb_screen_t *screen_of_display(xcb_connection_t *xcb, int screen) {
39 xcb_screen_iterator_t iter;
41 if ((s = xcb_get_setup(xcb))) {
42 iter = xcb_setup_roots_iterator(s);
43 for (; iter.rem; --screen, xcb_screen_next(&iter))
50 void pa_x11_set_prop(xcb_connection_t *xcb, int screen, const char *name, const char *data) {
52 xcb_intern_atom_cookie_t cookie;
53 xcb_intern_atom_reply_t *reply;
59 if ((xs = screen_of_display(xcb, screen))) {
60 cookie = xcb_intern_atom(xcb, 0, strlen(name), name);
61 reply = xcb_intern_atom_reply(xcb, cookie, NULL);
63 xcb_change_property(xcb, XCB_PROP_MODE_REPLACE, xs->root, reply->atom, XCB_ATOM_STRING, PA_XCB_FORMAT, (int) strlen(data), (const void*) data);
67 void pa_x11_del_prop(xcb_connection_t *xcb, int screen, const char *name) {
69 xcb_intern_atom_cookie_t cookie;
70 xcb_intern_atom_reply_t *reply;
75 if ((xs = screen_of_display(xcb, screen))) {
76 cookie = xcb_intern_atom(xcb, 0, strlen(name), name);
77 reply = xcb_intern_atom_reply(xcb, cookie, NULL);
79 xcb_delete_property(xcb, xs->root, reply->atom);
83 char* pa_x11_get_prop(xcb_connection_t *xcb, int screen, const char *name, char *p, size_t l) {
86 xcb_get_property_cookie_t req;
87 xcb_get_property_reply_t* prop = NULL;
89 xcb_intern_atom_cookie_t cookie;
90 xcb_intern_atom_reply_t *reply;
97 xs = screen_of_display(xcb, screen);
99 * Also try and get the settings from the first screen.
100 * This allows for e.g. a Media Center to run on screen 1 (e.g. HDMI) and have
101 * different defaults (e.g. prefer the HDMI sink) than the primary screen 0
102 * which uses the Internal Audio sink.
104 if (!xs && 0 != screen)
105 xs = screen_of_display(xcb, 0);
108 cookie = xcb_intern_atom(xcb, 0, strlen(name), name);
109 reply = xcb_intern_atom_reply(xcb, cookie, NULL);
111 req = xcb_get_property(xcb, 0, xs->root, reply->atom, XCB_ATOM_STRING, 0, (uint32_t)(l-1));
112 prop = xcb_get_property_reply(xcb, req, NULL);
117 if (PA_XCB_FORMAT != prop->format)
120 len = xcb_get_property_value_length(prop);
121 if (len < 1 || len >= (int)l)
124 memcpy(p, xcb_get_property_value(prop), len);