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

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2008-2009 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
  29 #include <pulse/xmalloc.h>
  30 #include <pulsecore/module.h>
  31 #include <pulsecore/core-util.h>
  32 #include <pulsecore/modargs.h>
  33 #include <pulsecore/macro.h>
  34 #include <pulsecore/core-util.h>
  35 #include <pulsecore/dbus-shared.h>
  36
  37 #include "module-bluetooth-discover-symdef.h"
  38 #include "bluetooth-util.h"
  39
  40 PA_MODULE_AUTHOR("Joao Paulo Rechi Vita");
  41 PA_MODULE_DESCRIPTION("Detect available bluetooth audio devices and load bluetooth audio drivers");
  42 PA_MODULE_VERSION(PACKAGE_VERSION);
  43 PA_MODULE_USAGE("async=<Asynchronous initialization?> "
  44                 "sco_sink=<name of sink> "
  45                 "sco_source=<name of source> ");
  46 PA_MODULE_LOAD_ONCE(TRUE);
  47
  48 static const char* const valid_modargs[] = {
  49     "sco_sink",
  50     "sco_source",
  51     "async",
  52     NULL
  53 };
  54
  55 struct userdata {
  56     pa_module *module;
  57     pa_modargs *modargs;
  58     pa_core *core;
  59     pa_bluetooth_discovery *discovery;
  60     pa_hook_slot *slot;
  61     pa_hashmap *hashmap;
  62 };
  63
  64 struct module_info {
  65     char *path;
  66     uint32_t module;
  67 };
  68
  69 static pa_hook_result_t load_module_for_device(pa_bluetooth_discovery *y, const pa_bluetooth_device *d, struct userdata *u) {
  70     struct module_info *mi;
  71
  72     pa_assert(u);
  73     pa_assert(d);
  74
  75     mi = pa_hashmap_get(u->hashmap, d->path);
  76
  77     if (pa_bluetooth_device_any_audio_connected(d)) {
  78
  79         if (!mi) {
  80             pa_module *m = NULL;
  81             char *args;
  82
  83             /* Oh, awesome, a new device has shown up and been connected! */
  84
  85             args = pa_sprintf_malloc("address=\"%s\" path=\"%s\"", d->address, d->path);
  86
  87             if (pa_modargs_get_value(u->modargs, "sco_sink", NULL) &&
  88                 pa_modargs_get_value(u->modargs, "sco_source", NULL)) {
  89                 char *tmp;
  90
  91                 tmp = pa_sprintf_malloc("%s sco_sink=\"%s\" sco_source=\"%s\"", args,
  92                                         pa_modargs_get_value(u->modargs, "sco_sink", NULL),
  93                                         pa_modargs_get_value(u->modargs, "sco_source", NULL));
  94                 pa_xfree(args);
  95                 args = tmp;
  96             }
  97
  98             pa_log_debug("Loading module-bluetooth-device %s", args);
  99             m = pa_module_load(u->module->core, "module-bluetooth-device", args);
 100             pa_xfree(args);
 101
 102             if (m) {
 103                 mi = pa_xnew(struct module_info, 1);
 104                 mi->module = m->index;
 105                 mi->path = pa_xstrdup(d->path);
 106
 107                 pa_hashmap_put(u->hashmap, mi->path, mi);
 108             } else
 109                 pa_log_debug("Failed to load module for device %s", d->path);
 110         }
 111
 112     } else {
 113
 114         if (mi) {
 115
 116             /* Hmm, disconnection? Then the module unloads itself */
 117
 118             pa_log_debug("Unregistering module for %s", d->path);
 119             pa_hashmap_remove(u->hashmap, mi->path);
 120             pa_xfree(mi->path);
 121             pa_xfree(mi);
 122         }
 123     }
 124
 125     return PA_HOOK_OK;
 126 }
 127
 128 int pa__init(pa_module* m) {
 129     struct userdata *u;
 130     pa_modargs *ma = NULL;
 131     pa_bool_t async = FALSE;
 132
 133     pa_assert(m);
 134
 135     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 136         pa_log("Failed to parse module arguments");
 137         goto fail;
 138     }
 139
 140     if (pa_modargs_get_value_boolean(ma, "async", &async) < 0) {
 141         pa_log("Failed to parse async argument.");
 142         goto fail;
 143     }
 144
 145     m->userdata = u = pa_xnew0(struct userdata, 1);
 146     u->module = m;
 147     u->core = m->core;
 148     u->modargs = ma;
 149     ma = NULL;
 150     u->hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
 151
 152     if (!(u->discovery = pa_bluetooth_discovery_get(u->core)))
 153         goto fail;
 154
 155     u->slot = pa_hook_connect(pa_bluetooth_discovery_hook(u->discovery, PA_BLUETOOTH_HOOK_DEVICE_CONNECTION_CHANGED),
 156                               PA_HOOK_NORMAL, (pa_hook_cb_t) load_module_for_device, u);
 157
 158     if (!async)
 159         pa_bluetooth_discovery_sync(u->discovery);
 160
 161     return 0;
 162
 163 fail:
 164     pa__done(m);
 165
 166     if (ma)
 167         pa_modargs_free(ma);
 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     if (u->slot)
 181         pa_hook_slot_free(u->slot);
 182
 183     if (u->discovery)
 184         pa_bluetooth_discovery_unref(u->discovery);
 185
 186     if (u->hashmap) {
 187         struct module_info *mi;
 188
 189         while ((mi = pa_hashmap_steal_first(u->hashmap))) {
 190             pa_xfree(mi->path);
 191             pa_xfree(mi);
 192         }
 193
 194         pa_hashmap_free(u->hashmap, NULL, NULL);
 195     }
 196
 197     if (u->modargs)
 198         pa_modargs_free(u->modargs);
 199
 200     pa_xfree(u);
 201 }