code.delx.au - pulseaudio/blob - src/modules/bluetooth/module-bluetooth-discover.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2008 Joao Paulo Rechi Vita
   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
   8   published by the Free Software Foundation; either version 2.1 of the
   9   License, 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
  17   License 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 <pulse/xmalloc.h>
  31 #include <pulsecore/module.h>
  32 #include <pulsecore/core-util.h>
  33 #include <pulsecore/modargs.h>
  34 #include <pulsecore/macro.h>
  35 #include <pulsecore/llist.h>
  36 #include <pulsecore/core-util.h>
  37 #include <modules/dbus-util.h>
  38
  39 #include "module-bluetooth-discover-symdef.h"
  40 #include "bluetooth-util.h"
  41
  42 PA_MODULE_AUTHOR("Joao Paulo Rechi Vita");
  43 PA_MODULE_DESCRIPTION("Detect available bluetooth audio devices and load bluetooth audio drivers");
  44 PA_MODULE_VERSION(PACKAGE_VERSION);
  45 PA_MODULE_USAGE("sco_sink=<name of sink> "
  46                 "sco_source=<name of source>"
  47                 "async=<Asynchronous initialization?>");
  48
  49 static const char* const valid_modargs[] = {
  50     "sco_sink",
  51     "sco_source",
  52     "async",
  53     NULL
  54 };
  55
  56 struct userdata {
  57     pa_module *module;
  58     pa_modargs *modargs;
  59     pa_core *core;
  60     pa_dbus_connection *connection;
  61     pa_bluetooth_discovery *discovery;
  62 };
  63
  64 static void load_module_for_device(struct userdata *u, pa_bluetooth_device *d, pa_bool_t good) {
  65     pa_assert(u);
  66     pa_assert(d);
  67
  68     if (good &&
  69         d->device_connected > 0 &&
  70         (d->audio_sink_connected > 0 || d->headset_connected > 0)) {
  71
  72         if (((uint32_t) PA_PTR_TO_UINT(d->data))-1 == PA_INVALID_INDEX) {
  73             pa_module *m = NULL;
  74             char *args;
  75
  76             /* Oh, awesome, a new device has shown up and been connected! */
  77
  78             args = pa_sprintf_malloc("address=\"%s\" path=\"%s\"", d->address, d->path);
  79
  80             if (pa_modargs_get_value(u->modargs, "sco_sink", NULL) &&
  81                 pa_modargs_get_value(u->modargs, "sco_source", NULL)) {
  82                 char *tmp;
  83
  84                 tmp = pa_sprintf_malloc("%s sco_sink=\"%s\" sco_source=\"%s\"", args,
  85                                         pa_modargs_get_value(u->modargs, "sco_sink", NULL),
  86                                         pa_modargs_get_value(u->modargs, "sco_source", NULL));
  87                 pa_xfree(args);
  88                 args = tmp;
  89             }
  90
  91             pa_log_debug("Loading module-bluetooth-device %s", args);
  92             m = pa_module_load(u->module->core, "module-bluetooth-device", args);
  93             pa_xfree(args);
  94
  95             if (m)
  96                 d->data = PA_UINT_TO_PTR((uint32_t) (m->index+1));
  97             else
  98                 pa_log_debug("Failed to load module for device %s", d->path);
  99         }
 100
 101     } else {
 102
 103         if (((uint32_t) PA_PTR_TO_UINT(d->data))-1 != PA_INVALID_INDEX) {
 104
 105             /* Hmm, disconnection? Then let's unload our module */
 106
 107             pa_log_debug("Unloading module for %s", d->path);
 108             pa_module_unload_request_by_index(u->core, (uint32_t) (PA_PTR_TO_UINT(d->data))-1, TRUE);
 109             d->data = NULL;
 110         }
 111     }
 112 }
 113
 114 static int setup_dbus(struct userdata *u) {
 115     DBusError err;
 116
 117     dbus_error_init(&err);
 118
 119     u->connection = pa_dbus_bus_get(u->core, DBUS_BUS_SYSTEM, &err);
 120
 121     if (dbus_error_is_set(&err) || !u->connection) {
 122         pa_log("Failed to get D-Bus connection: %s", err.message);
 123         dbus_error_free(&err);
 124         return -1;
 125     }
 126
 127     return 0;
 128 }
 129
 130 int pa__init(pa_module* m) {
 131     struct userdata *u;
 132     pa_modargs *ma = NULL;
 133     pa_bool_t async = FALSE;
 134
 135     pa_assert(m);
 136
 137     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 138         pa_log("Failed to parse module arguments");
 139         goto fail;
 140     }
 141
 142     if (pa_modargs_get_value_boolean(ma, "async", &async) < 0) {
 143         pa_log("Failed to parse async argument.");
 144         goto fail;
 145     }
 146
 147     m->userdata = u = pa_xnew0(struct userdata, 1);
 148     u->module = m;
 149     u->core = m->core;
 150     u->modargs = ma;
 151     ma = NULL;
 152
 153     if (setup_dbus(u) < 0)
 154         goto fail;
 155
 156     if (!(u->discovery = pa_bluetooth_discovery_new(pa_dbus_connection_get(u->connection), load_module_for_device, u)))
 157         goto fail;
 158
 159     if (!async)
 160         pa_bluetooth_discovery_sync(u->discovery);
 161
 162     return 0;
 163
 164 fail:
 165     pa__done(m);
 166
 167     if (ma)
 168         pa_modargs_free(ma);
 169
 170     return -1;
 171 }
 172
 173 void pa__done(pa_module* m) {
 174     struct userdata *u;
 175
 176     pa_assert(m);
 177
 178     if (!(u = m->userdata))
 179         return;
 180
 181     if (u->discovery)
 182         pa_bluetooth_discovery_free(u->discovery);
 183
 184     if (u->connection)
 185         pa_dbus_connection_unref(u->connection);
 186
 187     if (u->modargs)
 188         pa_modargs_free(u->modargs);
 189
 190     pa_xfree(u);
 191 }