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

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7
   8   PulseAudio is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU Lesser General Public License as published
  10   by the Free Software Foundation; either version 2 of the License,
  11   or (at your option) any later version.
  12
  13   PulseAudio is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with PulseAudio; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21   USA.
  22 ***/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #include <X11/Xlib.h>
  33 #include <X11/XKBlib.h>
  34
  35 #include <pulse/xmalloc.h>
  36
  37 #include <pulsecore/iochannel.h>
  38 #include <pulsecore/sink.h>
  39 #include <pulsecore/core-scache.h>
  40 #include <pulsecore/modargs.h>
  41 #include <pulsecore/namereg.h>
  42 #include <pulsecore/log.h>
  43 #include <pulsecore/x11wrap.h>
  44
  45 #include "module-x11-bell-symdef.h"
  46
  47 PA_MODULE_AUTHOR("Lennart Poettering")
  48 PA_MODULE_DESCRIPTION("X11 Bell interceptor")
  49 PA_MODULE_VERSION(PACKAGE_VERSION)
  50 PA_MODULE_USAGE("sink=<sink to connect to> sample=<sample name> display=<X11 display>")
  51
  52 struct userdata {
  53     pa_core *core;
  54     int xkb_event_base;
  55     char *sink_name;
  56     char *scache_item;
  57
  58     pa_x11_wrapper *x11_wrapper;
  59     pa_x11_client *x11_client;
  60 };
  61
  62 static const char* const valid_modargs[] = {
  63     "sink",
  64     "sample",
  65     "display",
  66     NULL
  67 };
  68
  69 static int x11_event_callback(pa_x11_wrapper *w, XEvent *e, void *userdata) {
  70     XkbBellNotifyEvent *bne;
  71     struct userdata *u = userdata;
  72
  73     pa_assert(w);
  74     pa_assert(e);
  75     pa_assert(u);
  76     pa_assert(u->x11_wrapper == w);
  77
  78     if (((XkbEvent*) e)->any.xkb_type != XkbBellNotify)
  79         return 0;
  80
  81     bne = (XkbBellNotifyEvent*) e;
  82
  83     if (pa_scache_play_item_by_name(u->core, u->scache_item, u->sink_name, (bne->percent*PA_VOLUME_NORM)/100, 1) < 0) {
  84         pa_log_info("Ringing bell failed, reverting to X11 device bell.");
  85         XkbForceDeviceBell(pa_x11_wrapper_get_display(w), bne->device, bne->bell_class, bne->bell_id, bne->percent);
  86     }
  87
  88     return 1;
  89 }
  90
  91 int pa__init(pa_module*m) {
  92
  93     struct userdata *u = NULL;
  94     pa_modargs *ma = NULL;
  95     int major, minor;
  96     unsigned int auto_ctrls, auto_values;
  97
  98     pa_assert(m);
  99
 100     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 101         pa_log("Failed to parse module arguments");
 102         goto fail;
 103     }
 104
 105     m->userdata = u = pa_xnew(struct userdata, 1);
 106     u->core = m->core;
 107     u->scache_item = pa_xstrdup(pa_modargs_get_value(ma, "sample", "x11-bell"));
 108     u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
 109     u->x11_client = NULL;
 110
 111     if (!(u->x11_wrapper = pa_x11_wrapper_get(m->core, pa_modargs_get_value(ma, "display", NULL))))
 112         goto fail;
 113
 114     major = XkbMajorVersion;
 115     minor = XkbMinorVersion;
 116
 117     if (!XkbLibraryVersion(&major, &minor)) {
 118         pa_log("XkbLibraryVersion() failed");
 119         goto fail;
 120     }
 121
 122     major = XkbMajorVersion;
 123     minor = XkbMinorVersion;
 124
 125     if (!XkbQueryExtension(pa_x11_wrapper_get_display(u->x11_wrapper), NULL, &u->xkb_event_base, NULL, &major, &minor)) {
 126         pa_log("XkbQueryExtension() failed");
 127         goto fail;
 128     }
 129
 130     XkbSelectEvents(pa_x11_wrapper_get_display(u->x11_wrapper), XkbUseCoreKbd, XkbBellNotifyMask, XkbBellNotifyMask);
 131     auto_ctrls = auto_values = XkbAudibleBellMask;
 132     XkbSetAutoResetControls(pa_x11_wrapper_get_display(u->x11_wrapper), XkbAudibleBellMask, &auto_ctrls, &auto_values);
 133     XkbChangeEnabledControls(pa_x11_wrapper_get_display(u->x11_wrapper), XkbUseCoreKbd, XkbAudibleBellMask, 0);
 134
 135     u->x11_client = pa_x11_client_new(u->x11_wrapper, x11_event_callback, u);
 136
 137     pa_modargs_free(ma);
 138
 139     return 0;
 140
 141 fail:
 142     if (ma)
 143         pa_modargs_free(ma);
 144
 145     pa__done(m);
 146
 147     return -1;
 148 }
 149
 150 void pa__done(pa_module*m) {
 151     struct userdata *u;
 152
 153     pa_assert(m);
 154
 155     if (!m->userdata)
 156         return;
 157
 158     u = m->userdata;
 159
 160     pa_xfree(u->scache_item);
 161     pa_xfree(u->sink_name);
 162
 163     if (u->x11_client)
 164         pa_x11_client_free(u->x11_client);
 165
 166     if (u->x11_wrapper)
 167         pa_x11_wrapper_unref(u->x11_wrapper);
 168
 169     pa_xfree(u);
 170 }