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 <pulsecore/dbus-shared.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("async=<Asynchronous initialization?>");
  46 PA_MODULE_LOAD_ONCE(TRUE);
  47
  48 /*
  49 #ifdef NOKIA
  50    "sco_sink=<name of sink> "
  51    "sco_source=<name of source>"
  52 #endif
  53 */
  54
  55 static const char* const valid_modargs[] = {
  56 #ifdef NOKIA
  57     "sco_sink",
  58     "sco_source",
  59 #endif
  60     "async",
  61     NULL
  62 };
  63
  64 struct userdata {
  65     pa_module *module;
  66     pa_modargs *modargs;
  67     pa_core *core;
  68     pa_bluetooth_discovery *discovery;
  69     pa_hook_slot *slot;
  70     pa_hashmap *hashmap;
  71 };
  72
  73 struct module_info {
  74     char *path;
  75     uint32_t module;
  76 };
  77
  78 static pa_hook_result_t load_module_for_device(pa_bluetooth_discovery *y, const pa_bluetooth_device *d, struct userdata *u) {
  79     struct module_info *mi;
  80
  81     pa_assert(u);
  82     pa_assert(d);
  83
  84     mi = pa_hashmap_get(u->hashmap, d->path);
  85
  86     if (!d->dead &&
  87         d->device_connected > 0 && d->audio_state >= PA_BT_AUDIO_STATE_CONNECTED) {
  88
  89         if (!mi) {
  90             pa_module *m = NULL;
  91             char *args;
  92
  93             /* Oh, awesome, a new device has shown up and been connected! */
  94
  95             args = pa_sprintf_malloc("address=\"%s\" path=\"%s\"", d->address, d->path);
  96 #if 0
  97             /* This is in case we have to use hsp immediately, without waiting for .Audio.State = Connected */
  98             if (d->headset_state >= PA_BT_AUDIO_STATE_CONNECTED && somecondition) {
  99                 char *tmp;
 100                 tmp = pa_sprintf_malloc("%s profile=\"hsp\"", args);
 101                 pa_xfree(args);
 102                 args = tmp;
 103             }
 104 #endif
 105
 106 #ifdef NOKIA
 107             if (pa_modargs_get_value(u->modargs, "sco_sink", NULL) &&
 108                 pa_modargs_get_value(u->modargs, "sco_source", NULL)) {
 109                 char *tmp;
 110
 111                 tmp = pa_sprintf_malloc("%s sco_sink=\"%s\" sco_source=\"%s\"", args,
 112                                         pa_modargs_get_value(u->modargs, "sco_sink", NULL),
 113                                         pa_modargs_get_value(u->modargs, "sco_source", NULL));
 114                 pa_xfree(args);
 115                 args = tmp;
 116             }
 117 #endif
 118
 119             pa_log_debug("Loading module-bluetooth-device %s", args);
 120             m = pa_module_load(u->module->core, "module-bluetooth-device", args);
 121             pa_xfree(args);
 122
 123             if (m) {
 124                 mi = pa_xnew(struct module_info, 1);
 125                 mi->module = m->index;
 126                 mi->path = pa_xstrdup(d->path);
 127
 128                 pa_hashmap_put(u->hashmap, mi->path, mi);
 129             } else
 130                 pa_log_debug("Failed to load module for device %s", d->path);
 131         }
 132
 133     } else {
 134
 135         if (mi) {
 136
 137             /* Hmm, disconnection? Then let's unload our module */
 138
 139             pa_log_debug("Unloading module for %s", d->path);
 140             pa_module_unload_request_by_index(u->core, mi->module, TRUE);
 141
 142             pa_hashmap_remove(u->hashmap, mi->path);
 143             pa_xfree(mi->path);
 144             pa_xfree(mi);
 145         }
 146     }
 147
 148     return PA_HOOK_OK;
 149 }
 150
 151 int pa__init(pa_module* m) {
 152     struct userdata *u;
 153     pa_modargs *ma = NULL;
 154     pa_bool_t async = FALSE;
 155
 156     pa_assert(m);
 157
 158     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 159         pa_log("Failed to parse module arguments");
 160         goto fail;
 161     }
 162
 163     if (pa_modargs_get_value_boolean(ma, "async", &async) < 0) {
 164         pa_log("Failed to parse async argument.");
 165         goto fail;
 166     }
 167
 168     m->userdata = u = pa_xnew0(struct userdata, 1);
 169     u->module = m;
 170     u->core = m->core;
 171     u->modargs = ma;
 172     ma = NULL;
 173     u->hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
 174
 175     if (!(u->discovery = pa_bluetooth_discovery_get(u->core)))
 176         goto fail;
 177
 178     u->slot = pa_hook_connect(pa_bluetooth_discovery_hook(u->discovery), PA_HOOK_NORMAL, (pa_hook_cb_t) load_module_for_device, u);
 179
 180     if (!async)
 181         pa_bluetooth_discovery_sync(u->discovery);
 182
 183     return 0;
 184
 185 fail:
 186     pa__done(m);
 187
 188     if (ma)
 189         pa_modargs_free(ma);
 190
 191     return -1;
 192 }
 193
 194 void pa__done(pa_module* m) {
 195     struct userdata *u;
 196
 197     pa_assert(m);
 198
 199     if (!(u = m->userdata))
 200         return;
 201
 202     if (u->slot)
 203         pa_hook_slot_free(u->slot);
 204
 205     if (u->discovery)
 206         pa_bluetooth_discovery_unref(u->discovery);
 207
 208     if (u->hashmap) {
 209         struct module_info *mi;
 210
 211         while ((mi = pa_hashmap_steal_first(u->hashmap))) {
 212             pa_xfree(mi->path);
 213             pa_xfree(mi);
 214         }
 215
 216         pa_hashmap_free(u->hashmap, NULL, NULL);
 217     }
 218
 219     if (u->modargs)
 220         pa_modargs_free(u->modargs);
 221
 222     pa_xfree(u);
 223 }