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 <assert.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 #include <X11/Xlib.h>
  34 #include <X11/XKBlib.h>
  35
  36 #include <pulse/xmalloc.h>
  37
  38 #include <pulsecore/iochannel.h>
  39 #include <pulsecore/sink.h>
  40 #include <pulsecore/core-scache.h>
  41 #include <pulsecore/modargs.h>
  42 #include <pulsecore/namereg.h>
  43 #include <pulsecore/log.h>
  44 #include <pulsecore/x11wrap.h>
  45
  46 #include "module-x11-bell-symdef.h"
  47
  48 PA_MODULE_AUTHOR("Lennart Poettering")
  49 PA_MODULE_DESCRIPTION("X11 Bell interceptor")
  50 PA_MODULE_VERSION(PACKAGE_VERSION)
  51 PA_MODULE_USAGE("sink=<sink to connect to> sample=<sample name> display=<X11 display>")
  52
  53 struct userdata {
  54     pa_core *core;
  55     int xkb_event_base;
  56     char *sink_name;
  57     char *scache_item;
  58
  59     pa_x11_wrapper *x11_wrapper;
  60     pa_x11_client *x11_client;
  61 };
  62
  63 static const char* const valid_modargs[] = {
  64     "sink",
  65     "sample",
  66     "display",
  67     NULL
  68 };
  69
  70 static int ring_bell(struct userdata *u, int percent) {
  71     pa_sink *s;
  72     assert(u);
  73
  74     if (!(s = pa_namereg_get(u->core, u->sink_name, PA_NAMEREG_SINK, 1))) {
  75         pa_log("Invalid sink: %s", u->sink_name);
  76         return -1;
  77     }
  78
  79     pa_scache_play_item(u->core, u->scache_item, s, (percent*PA_VOLUME_NORM)/100);
  80     return 0;
  81 }
  82
  83 static int x11_event_callback(pa_x11_wrapper *w, XEvent *e, void *userdata) {
  84     XkbBellNotifyEvent *bne;
  85     struct userdata *u = userdata;
  86     assert(w && e && u && u->x11_wrapper == w);
  87
  88     if (((XkbEvent*) e)->any.xkb_type != XkbBellNotify)
  89         return 0;
  90
  91     bne = (XkbBellNotifyEvent*) e;
  92
  93     if (ring_bell(u, bne->percent) < 0) {
  94         pa_log_info("Ringing bell failed, reverting to X11 device bell.");
  95         XkbForceDeviceBell(pa_x11_wrapper_get_display(w), bne->device, bne->bell_class, bne->bell_id, bne->percent);
  96     }
  97
  98     return 1;
  99 }
 100
 101 int pa__init(pa_core *c, pa_module*m) {
 102     struct userdata *u = NULL;
 103     pa_modargs *ma = NULL;
 104     int major, minor;
 105     unsigned int auto_ctrls, auto_values;
 106     assert(c && m);
 107
 108     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 109         pa_log("failed to parse module arguments");
 110         goto fail;
 111     }
 112
 113     m->userdata = u = pa_xmalloc(sizeof(struct userdata));
 114     u->core = c;
 115     u->scache_item = pa_xstrdup(pa_modargs_get_value(ma, "sample", "x11-bell"));
 116     u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
 117     u->x11_client = NULL;
 118
 119     if (!(u->x11_wrapper = pa_x11_wrapper_get(c, pa_modargs_get_value(ma, "display", NULL))))
 120         goto fail;
 121
 122     major = XkbMajorVersion;
 123     minor = XkbMinorVersion;
 124
 125     if (!XkbLibraryVersion(&major, &minor)) {
 126         pa_log("XkbLibraryVersion() failed");
 127         goto fail;
 128     }
 129
 130     major = XkbMajorVersion;
 131     minor = XkbMinorVersion;
 132
 133
 134     if (!XkbQueryExtension(pa_x11_wrapper_get_display(u->x11_wrapper), NULL, &u->xkb_event_base, NULL, &major, &minor)) {
 135         pa_log("XkbQueryExtension() failed");
 136         goto fail;
 137     }
 138
 139     XkbSelectEvents(pa_x11_wrapper_get_display(u->x11_wrapper), XkbUseCoreKbd, XkbBellNotifyMask, XkbBellNotifyMask);
 140     auto_ctrls = auto_values = XkbAudibleBellMask;
 141     XkbSetAutoResetControls(pa_x11_wrapper_get_display(u->x11_wrapper), XkbAudibleBellMask, &auto_ctrls, &auto_values);
 142     XkbChangeEnabledControls(pa_x11_wrapper_get_display(u->x11_wrapper), XkbUseCoreKbd, XkbAudibleBellMask, 0);
 143
 144     u->x11_client = pa_x11_client_new(u->x11_wrapper, x11_event_callback, u);
 145
 146     pa_modargs_free(ma);
 147
 148     return 0;
 149
 150 fail:
 151     if (ma)
 152         pa_modargs_free(ma);
 153     if (m->userdata)
 154         pa__done(c, m);
 155     return -1;
 156 }
 157
 158 void pa__done(pa_core *c, pa_module*m) {
 159     struct userdata *u = m->userdata;
 160     assert(c && m && u);
 161
 162     pa_xfree(u->scache_item);
 163     pa_xfree(u->sink_name);
 164
 165     if (u->x11_client)
 166         pa_x11_client_free(u->x11_client);
 167
 168     if (u->x11_wrapper)
 169         pa_x11_wrapper_unref(u->x11_wrapper);
 170
 171     pa_xfree(u);
 172 }