code.delx.au - pulseaudio/blob - polyp/module-x11-bell.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio 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 of the License,
   9   or (at your option) any later version.
  10
  11   polypaudio 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.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with polypaudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdio.h>
  27 #include <assert.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31 #include <X11/Xlib.h>
  32 #include <X11/XKBlib.h>
  33
  34 #include "module.h"
  35 #include "sink.h"
  36 #include "scache.h"
  37 #include "modargs.h"
  38 #include "xmalloc.h"
  39 #include "namereg.h"
  40 #include "log.h"
  41 #include "x11wrap.h"
  42 #include "module-x11-bell-symdef.h"
  43
  44 PA_MODULE_AUTHOR("Lennart Poettering")
  45 PA_MODULE_DESCRIPTION("X11 Bell interceptor")
  46 PA_MODULE_VERSION(PACKAGE_VERSION)
  47 PA_MODULE_USAGE("sink=<sink to connect to> sample=<sample name> display=<X11 display>")
  48
  49 struct userdata {
  50     struct pa_core *core;
  51     int xkb_event_base;
  52     char *sink_name;
  53     char *scache_item;
  54     Display *display;
  55
  56     struct pa_x11_wrapper *x11_wrapper;
  57     struct pa_x11_client *x11_client;
  58 };
  59
  60 static const char* const valid_modargs[] = {
  61     "sink",
  62     "sample",
  63     "display",
  64     NULL
  65 };
  66
  67 static int ring_bell(struct userdata *u, int percent) {
  68     struct pa_sink *s;
  69     assert(u);
  70
  71     if (!(s = pa_namereg_get(u->core, u->sink_name, PA_NAMEREG_SINK, 1))) {
  72         pa_log(__FILE__": Invalid sink\n");
  73         return -1;
  74     }
  75
  76     pa_scache_play_item(u->core, u->scache_item, s, percent*2);
  77     return 0;
  78 }
  79
  80 static int x11_event_callback(struct pa_x11_wrapper *w, XEvent *e, void *userdata) {
  81     XkbBellNotifyEvent *bne;
  82     struct userdata *u = userdata;
  83     assert(w && e && u && u->x11_wrapper == w);
  84
  85     if (((XkbEvent*) e)->any.xkb_type != XkbBellNotify)
  86         return 0;
  87
  88     bne = (XkbBellNotifyEvent*) e;
  89
  90     if (ring_bell(u, bne->percent) < 0) {
  91         pa_log(__FILE__": Ringing bell failed, reverting to X11 device bell.\n");
  92         XkbForceDeviceBell(pa_x11_wrapper_get_display(w), bne->device, bne->bell_class, bne->bell_id, bne->percent);
  93     }
  94
  95     return 1;
  96 }
  97
  98 int pa__init(struct pa_core *c, struct pa_module*m) {
  99     struct userdata *u = NULL;
 100     struct pa_modargs *ma = NULL;
 101     int major, minor;
 102     unsigned int auto_ctrls, auto_values;
 103     assert(c && m);
 104
 105     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 106         pa_log(__FILE__": failed to parse module arguments\n");
 107         goto fail;
 108     }
 109
 110     m->userdata = u = pa_xmalloc(sizeof(struct userdata));
 111     u->core = c;
 112     u->scache_item = pa_xstrdup(pa_modargs_get_value(ma, "sample", "x11-bell"));
 113     u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
 114     u->x11_client = NULL;
 115
 116     if (!(u->x11_wrapper = pa_x11_wrapper_get(c, pa_modargs_get_value(ma, "display", NULL))))
 117         goto fail;
 118
 119     u->display = pa_x11_wrapper_get_display(u->x11_wrapper);
 120
 121     major = XkbMajorVersion;
 122     minor = XkbMinorVersion;
 123
 124     if (!XkbLibraryVersion(&major, &minor)) {
 125         pa_log(__FILE__": XkbLibraryVersion() failed\n");
 126         goto fail;
 127     }
 128
 129     major = XkbMajorVersion;
 130     minor = XkbMinorVersion;
 131
 132
 133     if (!XkbQueryExtension(u->display, NULL, &u->xkb_event_base, NULL, &major, &minor)) {
 134         pa_log(__FILE__": XkbQueryExtension() failed\n");
 135         goto fail;
 136     }
 137
 138     XkbSelectEvents(u->display, XkbUseCoreKbd, XkbBellNotifyMask, XkbBellNotifyMask);
 139     auto_ctrls = auto_values = XkbAudibleBellMask;
 140     XkbSetAutoResetControls(u->display, XkbAudibleBellMask, &auto_ctrls, &auto_values);
 141     XkbChangeEnabledControls(u->display, XkbUseCoreKbd, XkbAudibleBellMask, 0);
 142
 143     u->x11_client = pa_x11_client_new(u->x11_wrapper, x11_event_callback, u);
 144
 145     pa_modargs_free(ma);
 146
 147     return 0;
 148
 149 fail:
 150     if (ma)
 151         pa_modargs_free(ma);
 152     if (m->userdata)
 153         pa__done(c, m);
 154     return -1;
 155 }
 156
 157 void pa__done(struct pa_core *c, struct pa_module*m) {
 158     struct userdata *u = m->userdata;
 159     assert(c && m && u);
 160
 161     pa_xfree(u->scache_item);
 162     pa_xfree(u->sink_name);
 163
 164     if (u->x11_client)
 165         pa_x11_client_free(u->x11_client);
 166
 167     if (u->x11_wrapper)
 168         pa_x11_wrapper_unref(u->x11_wrapper);
 169
 170     pa_xfree(u);
 171 }