src/modules/module-x11-bell.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5
   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 of the License,
   9   or (at your option) any later version.
  10
  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.
  15
  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
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 #include <X11/Xlib.h>
  31 #include <X11/XKBlib.h>
  32
  33 #include <pulse/xmalloc.h>
  34
  35 #include <pulsecore/iochannel.h>
  36 #include <pulsecore/sink.h>
  37 #include <pulsecore/core-scache.h>
  38 #include <pulsecore/modargs.h>
  39 #include <pulsecore/namereg.h>
  40 #include <pulsecore/log.h>
  41 #include <pulsecore/x11wrap.h>
  42
  43 #include "module-x11-bell-symdef.h"
  44
  45 PA_MODULE_AUTHOR("Lennart Poettering");
  46 PA_MODULE_DESCRIPTION("X11 bell interceptor");
  47 PA_MODULE_VERSION(PACKAGE_VERSION);
  48 PA_MODULE_LOAD_ONCE(FALSE);
  49 PA_MODULE_USAGE("sink=<sink to connect to> sample=<sample name> display=<X11 display>");
  50
  51 static const char* const valid_modargs[] = {
  52     "sink",
  53     "sample",
  54     "display",
  55     NULL
  56 };
  57
  58 struct userdata {
  59     pa_core *core;
  60     pa_module *module;
  61
  62     int xkb_event_base;
  63
  64     char *sink_name;
  65     char *scache_item;
  66
  67     pa_x11_wrapper *x11_wrapper;
  68     pa_x11_client *x11_client;
  69 };
  70
  71 static int x11_event_cb(pa_x11_wrapper *w, XEvent *e, void *userdata) {
  72     XkbBellNotifyEvent *bne;
  73     struct userdata *u = userdata;
  74
  75     pa_assert(w);
  76     pa_assert(e);
  77     pa_assert(u);
  78     pa_assert(u->x11_wrapper == w);
  79
  80     if (((XkbEvent*) e)->any.xkb_type != XkbBellNotify)
  81         return 0;
  82
  83     bne = (XkbBellNotifyEvent*) e;
  84
  85     if (pa_scache_play_item_by_name(u->core, u->scache_item, u->sink_name, TRUE, ((pa_volume_t) bne->percent*PA_VOLUME_NORM)/100U, NULL, NULL) < 0) {
  86         pa_log_info("Ringing bell failed, reverting to X11 device bell.");
  87         XkbForceDeviceBell(pa_x11_wrapper_get_display(w), bne->device, bne->bell_class, bne->bell_id, bne->percent);
  88     }
  89
  90     return 1;
  91 }
  92
  93 static void x11_kill_cb(pa_x11_wrapper *w, void *userdata) {
  94     struct userdata *u = userdata;
  95
  96     pa_assert(w);
  97     pa_assert(u);
  98     pa_assert(u->x11_wrapper == w);
  99
 100     if (u->x11_client)
 101         pa_x11_client_free(u->x11_client);
 102
 103     if (u->x11_wrapper)
 104         pa_x11_wrapper_unref(u->x11_wrapper);
 105
 106     u->x11_client = NULL;
 107     u->x11_wrapper = NULL;
 108
 109     pa_module_unload_request(u->module, TRUE);
 110 }
 111
 112 int pa__init(pa_module*m) {
 113
 114     struct userdata *u = NULL;
 115     pa_modargs *ma = NULL;
 116     int major, minor;
 117     unsigned int auto_ctrls, auto_values;
 118
 119     pa_assert(m);
 120
 121     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 122         pa_log("Failed to parse module arguments");
 123         goto fail;
 124     }
 125
 126     m->userdata = u = pa_xnew(struct userdata, 1);
 127     u->core = m->core;
 128     u->module = m;
 129     u->scache_item = pa_xstrdup(pa_modargs_get_value(ma, "sample", "bell-window-system"));
 130     u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
 131     u->x11_client = NULL;
 132
 133     if (!(u->x11_wrapper = pa_x11_wrapper_get(m->core, pa_modargs_get_value(ma, "display", NULL))))
 134         goto fail;
 135
 136     major = XkbMajorVersion;
 137     minor = XkbMinorVersion;
 138
 139     if (!XkbLibraryVersion(&major, &minor)) {
 140         pa_log("XkbLibraryVersion() failed");
 141         goto fail;
 142     }
 143
 144     major = XkbMajorVersion;
 145     minor = XkbMinorVersion;
 146
 147     if (!XkbQueryExtension(pa_x11_wrapper_get_display(u->x11_wrapper), NULL, &u->xkb_event_base, NULL, &major, &minor)) {
 148         pa_log("XkbQueryExtension() failed");
 149         goto fail;
 150     }
 151
 152     XkbSelectEvents(pa_x11_wrapper_get_display(u->x11_wrapper), XkbUseCoreKbd, XkbBellNotifyMask, XkbBellNotifyMask);
 153     auto_ctrls = auto_values = XkbAudibleBellMask;
 154     XkbSetAutoResetControls(pa_x11_wrapper_get_display(u->x11_wrapper), XkbAudibleBellMask, &auto_ctrls, &auto_values);
 155     XkbChangeEnabledControls(pa_x11_wrapper_get_display(u->x11_wrapper), XkbUseCoreKbd, XkbAudibleBellMask, 0);
 156
 157     u->x11_client = pa_x11_client_new(u->x11_wrapper, x11_event_cb, x11_kill_cb, u);
 158
 159     pa_modargs_free(ma);
 160
 161     return 0;
 162
 163 fail:
 164     if (ma)
 165         pa_modargs_free(ma);
 166
 167     pa__done(m);
 168
 169     return -1;
 170 }
 171
 172 void pa__done(pa_module*m) {
 173     struct userdata *u;
 174
 175     pa_assert(m);
 176
 177     if (!(u = m->userdata))
 178         return;
 179
 180     pa_xfree(u->scache_item);
 181     pa_xfree(u->sink_name);
 182
 183     if (u->x11_client)
 184         pa_x11_client_free(u->x11_client);
 185
 186     if (u->x11_wrapper)
 187         pa_x11_wrapper_unref(u->x11_wrapper);
 188
 189     pa_xfree(u);
 190 }