1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
polypaudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#include <assert.h>
#include <stdio.h>
#include "llist.h"
#include "x11wrap.h"
#include "xmalloc.h"
#include "log.h"
#include "props.h"
typedef struct pa_x11_internal pa_x11_internal;
struct pa_x11_internal {
PA_LLIST_FIELDS(pa_x11_internal);
pa_x11_wrapper *wrapper;
pa_io_event* io_event;
int fd;
};
struct pa_x11_wrapper {
pa_core *core;
int ref;
char *property_name;
Display *display;
pa_defer_event* defer_event;
pa_io_event* io_event;
PA_LLIST_HEAD(pa_x11_client, clients);
PA_LLIST_HEAD(pa_x11_internal, internals);
};
struct pa_x11_client {
PA_LLIST_FIELDS(pa_x11_client);
pa_x11_wrapper *wrapper;
int (*callback)(pa_x11_wrapper *w, XEvent *e, void *userdata);
void *userdata;
};
/* Dispatch all pending X11 events */
static void work(pa_x11_wrapper *w) {
assert(w && w->ref >= 1);
while (XPending(w->display)) {
pa_x11_client *c;
XEvent e;
XNextEvent(w->display, &e);
for (c = w->clients; c; c = c->next) {
assert(c->callback);
if (c->callback(w, &e, c->userdata) != 0)
break;
}
}
}
/* IO notification event for the X11 display connection */
static void display_io_event(pa_mainloop_api *m, pa_io_event *e, int fd, PA_GCC_UNUSED pa_io_event_flags f, void *userdata) {
pa_x11_wrapper *w = userdata;
assert(m && e && fd >= 0 && w && w->ref >= 1);
work(w);
}
/* Deferred notification event. Called once each main loop iteration */
static void defer_event(pa_mainloop_api *m, pa_defer_event *e, void *userdata) {
pa_x11_wrapper *w = userdata;
assert(m && e && w && w->ref >= 1);
work(w);
}
/* IO notification event for X11 internal connections */
static void internal_io_event(pa_mainloop_api *m, pa_io_event *e, int fd, PA_GCC_UNUSED pa_io_event_flags f, void *userdata) {
pa_x11_wrapper *w = userdata;
assert(m && e && fd >= 0 && w && w->ref >= 1);
XProcessInternalConnection(w->display, fd);
}
/* Add a new IO source for the specified X11 internal connection */
static pa_x11_internal* x11_internal_add(pa_x11_wrapper *w, int fd) {
pa_x11_internal *i;
assert(i && fd >= 0);
i = pa_xmalloc(sizeof(pa_x11_internal));
i->wrapper = w;
i->io_event = w->core->mainloop->io_new(w->core->mainloop, fd, PA_IO_EVENT_INPUT, internal_io_event, w);
i->fd = fd;
PA_LLIST_PREPEND(pa_x11_internal, w->internals, i);
return i;
}
/* Remove an IO source for an X11 internal connection */
static void x11_internal_remove(pa_x11_wrapper *w, pa_x11_internal *i) {
assert(i);
PA_LLIST_REMOVE(pa_x11_internal, w->internals, i);
w->core->mainloop->io_free(i->io_event);
pa_xfree(i);
}
/* Implementation of XConnectionWatchProc */
static void x11_watch(Display *display, XPointer userdata, int fd, Bool opening, XPointer *watch_data) {
pa_x11_wrapper *w = (pa_x11_wrapper*) userdata;
assert(display && w && fd >= 0);
if (opening)
*watch_data = (XPointer) x11_internal_add(w, fd);
else
x11_internal_remove(w, (pa_x11_internal*) *watch_data);
}
static pa_x11_wrapper* x11_wrapper_new(pa_core *c, const char *name, const char *t) {
pa_x11_wrapper*w;
Display *d;
int r;
if (!(d = XOpenDisplay(name))) {
pa_log(__FILE__": XOpenDisplay() failed\n");
return NULL;
}
w = pa_xmalloc(sizeof(pa_x11_wrapper));
w->core = c;
w->ref = 1;
w->property_name = pa_xstrdup(t);
w->display = d;
PA_LLIST_HEAD_INIT(pa_x11_client, w->clients);
PA_LLIST_HEAD_INIT(pa_x11_internal, w->internals);
w->defer_event = c->mainloop->defer_new(c->mainloop, defer_event, w);
w->io_event = c->mainloop->io_new(c->mainloop, ConnectionNumber(d), PA_IO_EVENT_INPUT, display_io_event, w);
XAddConnectionWatch(d, x11_watch, (XPointer) w);
r = pa_property_set(c, w->property_name, w);
assert(r >= 0);
return w;
}
static void x11_wrapper_free(pa_x11_wrapper*w) {
int r;
assert(w);
r = pa_property_remove(w->core, w->property_name);
assert(r >= 0);
assert(!w->clients);
XRemoveConnectionWatch(w->display, x11_watch, (XPointer) w);
XCloseDisplay(w->display);
w->core->mainloop->io_free(w->io_event);
w->core->mainloop->defer_free(w->defer_event);
while (w->internals)
x11_internal_remove(w, w->internals);
pa_xfree(w->property_name);
pa_xfree(w);
}
pa_x11_wrapper* pa_x11_wrapper_get(pa_core *c, const char *name) {
char t[256];
pa_x11_wrapper *w;
assert(c);
snprintf(t, sizeof(t), "x11-wrapper%s%s", name ? "-" : "", name ? name : "");
if ((w = pa_property_get(c, t)))
return pa_x11_wrapper_ref(w);
return x11_wrapper_new(c, name, t);
}
pa_x11_wrapper* pa_x11_wrapper_ref(pa_x11_wrapper *w) {
assert(w && w->ref >= 1);
w->ref++;
return w;
}
void pa_x11_wrapper_unref(pa_x11_wrapper* w) {
assert(w && w->ref >= 1);
if (!(--w->ref))
x11_wrapper_free(w);
}
Display *pa_x11_wrapper_get_display(pa_x11_wrapper *w) {
assert(w && w->ref >= 1);
return w->display;
}
pa_x11_client* pa_x11_client_new(pa_x11_wrapper *w, int (*cb)(pa_x11_wrapper *w, XEvent *e, void *userdata), void *userdata) {
pa_x11_client *c;
assert(w && w->ref >= 1);
c = pa_xmalloc(sizeof(pa_x11_client));
c->wrapper = w;
c->callback = cb;
c->userdata = userdata;
PA_LLIST_PREPEND(pa_x11_client, w->clients, c);
return c;
}
void pa_x11_client_free(pa_x11_client *c) {
assert(c && c->wrapper && c->wrapper->ref >= 1);
PA_LLIST_REMOVE(pa_x11_client, c->wrapper->clients, c);
pa_xfree(c);
}
|
