code.delx.au - pulseaudio/blob - src/modules/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 <polypcore/iochannel.h>
  35 #include <polypcore/sink.h>
  36 #include <polypcore/scache.h>
  37 #include <polypcore/modargs.h>
  38 #include <polypcore/xmalloc.h>
  39 #include <polypcore/namereg.h>
  40 #include <polypcore/log.h>
  41 #include <polypcore/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_USAGE("sink=<sink to connect to> sample=<sample name> display=<X11 display>")
  49
  50 struct userdata {
  51     pa_core *core;
  52     int xkb_event_base;
  53     char *sink_name;
  54     char *scache_item;
  55     Display *display;
  56
  57     pa_x11_wrapper *x11_wrapper;
  58     pa_x11_client *x11_client;
  59 };
  60
  61 static const char* const valid_modargs[] = {
  62     "sink",
  63     "sample",
  64     "display",
  65     NULL
  66 };
  67
  68 static int ring_bell(struct userdata *u, int percent) {
  69     pa_sink *s;
  70     pa_cvolume cv;
  71     assert(u);
  72
  73     if (!(s = pa_namereg_get(u->core, u->sink_name, PA_NAMEREG_SINK, 1))) {
  74         pa_log(__FILE__": Invalid sink: %s\n", u->sink_name);
  75         return -1;
  76     }
  77
  78     pa_scache_play_item(u->core, u->scache_item, s, pa_cvolume_set(&cv, PA_CHANNELS_MAX, percent*PA_VOLUME_NORM/100));
  79     return 0;
  80 }
  81
  82 static int x11_event_callback(pa_x11_wrapper *w, XEvent *e, void *userdata) {
  83     XkbBellNotifyEvent *bne;
  84     struct userdata *u = userdata;
  85     assert(w && e && u && u->x11_wrapper == w);
  86
  87     if (((XkbEvent*) e)->any.xkb_type != XkbBellNotify)
  88         return 0;
  89
  90     bne = (XkbBellNotifyEvent*) e;
  91
  92     if (ring_bell(u, bne->percent) < 0) {
  93         pa_log_info(__FILE__": Ringing bell failed, reverting to X11 device bell.\n");
  94         XkbForceDeviceBell(pa_x11_wrapper_get_display(w), bne->device, bne->bell_class, bne->bell_id, bne->percent);
  95     }
  96
  97     return 1;
  98 }
  99
 100 int pa__init(pa_core *c, pa_module*m) {
 101     struct userdata *u = NULL;
 102     pa_modargs *ma = NULL;
 103     int major, minor;
 104     unsigned int auto_ctrls, auto_values;
 105     assert(c && m);
 106
 107     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 108         pa_log(__FILE__": failed to parse module arguments\n");
 109         goto fail;
 110     }
 111
 112     m->userdata = u = pa_xmalloc(sizeof(struct userdata));
 113     u->core = c;
 114     u->scache_item = pa_xstrdup(pa_modargs_get_value(ma, "sample", "x11-bell"));
 115     u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
 116     u->x11_client = NULL;
 117
 118     if (!(u->x11_wrapper = pa_x11_wrapper_get(c, pa_modargs_get_value(ma, "display", NULL))))
 119         goto fail;
 120
 121     u->display = pa_x11_wrapper_get_display(u->x11_wrapper);
 122
 123     major = XkbMajorVersion;
 124     minor = XkbMinorVersion;
 125
 126     if (!XkbLibraryVersion(&major, &minor)) {
 127         pa_log(__FILE__": XkbLibraryVersion() failed\n");
 128         goto fail;
 129     }
 130
 131     major = XkbMajorVersion;
 132     minor = XkbMinorVersion;
 133
 134
 135     if (!XkbQueryExtension(u->display, NULL, &u->xkb_event_base, NULL, &major, &minor)) {
 136         pa_log(__FILE__": XkbQueryExtension() failed\n");
 137         goto fail;
 138     }
 139
 140     XkbSelectEvents(u->display, XkbUseCoreKbd, XkbBellNotifyMask, XkbBellNotifyMask);
 141     auto_ctrls = auto_values = XkbAudibleBellMask;
 142     XkbSetAutoResetControls(u->display, XkbAudibleBellMask, &auto_ctrls, &auto_values);
 143     XkbChangeEnabledControls(u->display, XkbUseCoreKbd, XkbAudibleBellMask, 0);
 144
 145     u->x11_client = pa_x11_client_new(u->x11_wrapper, x11_event_callback, u);
 146
 147     pa_modargs_free(ma);
 148
 149     return 0;
 150
 151 fail:
 152     if (ma)
 153         pa_modargs_free(ma);
 154     if (m->userdata)
 155         pa__done(c, m);
 156     return -1;
 157 }
 158
 159 void pa__done(pa_core *c, pa_module*m) {
 160     struct userdata *u = m->userdata;
 161     assert(c && m && u);
 162
 163     pa_xfree(u->scache_item);
 164     pa_xfree(u->sink_name);
 165
 166     if (u->x11_client)
 167         pa_x11_client_free(u->x11_client);
 168
 169     if (u->x11_wrapper)
 170         pa_x11_wrapper_unref(u->x11_wrapper);
 171
 172     pa_xfree(u);
 173 }