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("sco_sink=<name of sink> "
  44                 "sco_source=<name of source> ");
  45 PA_MODULE_LOAD_ONCE(true);
  46
  47 static const char* const valid_modargs[] = {
  48     "sco_sink",
  49     "sco_source",
  50     "async", /* deprecated */
  51     NULL
  52 };
  53
  54 struct userdata {
  55     pa_module *module;
  56     pa_modargs *modargs;
  57     pa_core *core;
  58     pa_bluetooth_discovery *discovery;
  59     pa_hook_slot *slot;
  60     pa_hashmap *hashmap;
  61 };
  62
  63 struct module_info {
  64     char *path;
  65     uint32_t module;
  66 };
  67
  68 static pa_hook_result_t load_module_for_device(pa_bluetooth_discovery *y, const pa_bluetooth_device *d, struct userdata *u) {
  69     struct module_info *mi;
  70
  71     pa_assert(u);
  72     pa_assert(d);
  73
  74     mi = pa_hashmap_get(u->hashmap, d->path);
  75
  76     if (pa_bluetooth_device_any_audio_connected(d)) {
  77
  78         if (!mi) {
  79             pa_module *m = NULL;
  80             char *args;
  81
  82             /* Oh, awesome, a new device has shown up and been connected! */
  83
  84             args = pa_sprintf_malloc("address=\"%s\" path=\"%s\"", d->address, d->path);
  85
  86             if (pa_modargs_get_value(u->modargs, "sco_sink", NULL) &&
  87                 pa_modargs_get_value(u->modargs, "sco_source", NULL)) {
  88                 char *tmp;
  89
  90                 tmp = pa_sprintf_malloc("%s sco_sink=\"%s\" sco_source=\"%s\"", args,
  91                                         pa_modargs_get_value(u->modargs, "sco_sink", NULL),
  92                                         pa_modargs_get_value(u->modargs, "sco_source", NULL));
  93                 pa_xfree(args);
  94                 args = tmp;
  95             }
  96
  97             pa_log_debug("Loading module-bluetooth-device %s", args);
  98             m = pa_module_load(u->module->core, "module-bluetooth-device", args);
  99             pa_xfree(args);
 100
 101             if (m) {
 102                 mi = pa_xnew(struct module_info, 1);
 103                 mi->module = m->index;
 104                 mi->path = pa_xstrdup(d->path);
 105
 106                 pa_hashmap_put(u->hashmap, mi->path, mi);
 107             } else
 108                 pa_log_debug("Failed to load module for device %s", d->path);
 109         }
 110
 111     } else {
 112
 113         if (mi) {
 114
 115             /* Hmm, disconnection? Then the module unloads itself */
 116
 117             pa_log_debug("Unregistering module for %s", d->path);
 118             pa_hashmap_remove(u->hashmap, mi->path);
 119             pa_xfree(mi->path);
 120             pa_xfree(mi);
 121         }
 122     }
 123
 124     return PA_HOOK_OK;
 125 }
 126
 127 int pa__init(pa_module* m) {
 128     struct userdata *u;
 129     pa_modargs *ma = NULL;
 130
 131     pa_assert(m);
 132
 133     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 134         pa_log("Failed to parse module arguments");
 135         goto fail;
 136     }
 137
 138     if (pa_modargs_get_value(ma, "async", NULL))
 139         pa_log_warn("The 'async' argument is deprecated and does nothing.");
 140
 141     m->userdata = u = pa_xnew0(struct userdata, 1);
 142     u->module = m;
 143     u->core = m->core;
 144     u->modargs = ma;
 145     ma = NULL;
 146     u->hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
 147
 148     if (!(u->discovery = pa_bluetooth_discovery_get(u->core)))
 149         goto fail;
 150
 151     u->slot = pa_hook_connect(pa_bluetooth_discovery_hook(u->discovery, PA_BLUETOOTH_HOOK_DEVICE_CONNECTION_CHANGED),
 152                               PA_HOOK_NORMAL, (pa_hook_cb_t) load_module_for_device, u);
 153
 154     return 0;
 155
 156 fail:
 157     pa__done(m);
 158
 159     if (ma)
 160         pa_modargs_free(ma);
 161
 162     return -1;
 163 }
 164
 165 void pa__done(pa_module* m) {
 166     struct userdata *u;
 167
 168     pa_assert(m);
 169
 170     if (!(u = m->userdata))
 171         return;
 172
 173     if (u->slot)
 174         pa_hook_slot_free(u->slot);
 175
 176     if (u->discovery)
 177         pa_bluetooth_discovery_unref(u->discovery);
 178
 179     if (u->hashmap) {
 180         struct module_info *mi;
 181
 182         while ((mi = pa_hashmap_steal_first(u->hashmap))) {
 183             pa_xfree(mi->path);
 184             pa_xfree(mi);
 185         }
 186
 187         pa_hashmap_free(u->hashmap, NULL, NULL);
 188     }
 189
 190     if (u->modargs)
 191         pa_modargs_free(u->modargs);
 192
 193     pa_xfree(u);
 194 }