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>
34 #define PA_XCB_FORMAT 8
36 static xcb_screen_t *screen_of_display(xcb_connection_t *xcb, int screen) {
38 xcb_screen_iterator_t iter;
40 if ((s = xcb_get_setup(xcb))) {
41 iter = xcb_setup_roots_iterator(s);
42 for (; iter.rem; --screen, xcb_screen_next(&iter))
49 void pa_x11_set_prop(xcb_connection_t *xcb, int screen, const char *name, const char *data) {
51 xcb_intern_atom_reply_t *reply;
57 if ((xs = screen_of_display(xcb, screen))) {
58 reply = xcb_intern_atom_reply(xcb,
59 xcb_intern_atom(xcb, 0, strlen(name), name),
63 xcb_change_property(xcb, XCB_PROP_MODE_REPLACE, xs->root, reply->atom,
64 XCB_ATOM_STRING, PA_XCB_FORMAT,
65 (int) strlen(data), (const void*) data);
72 void pa_x11_del_prop(xcb_connection_t *xcb, int screen, const char *name) {
74 xcb_intern_atom_reply_t *reply;
79 if ((xs = screen_of_display(xcb, screen))) {
80 reply = xcb_intern_atom_reply(xcb,
81 xcb_intern_atom(xcb, 0, strlen(name), name),
85 xcb_delete_property(xcb, xs->root, reply->atom);
91 char* pa_x11_get_prop(xcb_connection_t *xcb, int screen, const char *name, char *p, size_t l) {
94 xcb_get_property_cookie_t req;
95 xcb_get_property_reply_t* prop = NULL;
97 xcb_intern_atom_reply_t *reply;
104 xs = screen_of_display(xcb, screen);
106 * Also try and get the settings from the first screen.
107 * This allows for e.g. a Media Center to run on screen 1 (e.g. HDMI) and have
108 * different defaults (e.g. prefer the HDMI sink) than the primary screen 0
109 * which uses the Internal Audio sink.
111 if (!xs && 0 != screen)
112 xs = screen_of_display(xcb, 0);
115 reply = xcb_intern_atom_reply(xcb,
116 xcb_intern_atom(xcb, 0, strlen(name), name),
122 req = xcb_get_property(xcb, 0, xs->root, reply->atom, XCB_ATOM_STRING, 0, (uint32_t)(l-1));
124 prop = xcb_get_property_reply(xcb, req, NULL);
129 if (PA_XCB_FORMAT != prop->format)
132 len = xcb_get_property_value_length(prop);
133 if (len < 1 || len >= (int)l)
136 memcpy(p, xcb_get_property_value(prop), len);