code.delx.au - pulseaudio/blob - src/modules/bluetooth/module-bluez5-device.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2008-2013 João Paulo Rechi Vita
   5   Copyright 2011-2013 BMW Car IT GmbH.
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as
   9   published by the Free Software Foundation; either version 2.1 of the
  10   License, or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public
  18   License along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <pulsecore/module.h>
  28 #include <pulsecore/modargs.h>
  29
  30 #include "bluez5-util.h"
  31
  32 #include "module-bluez5-device-symdef.h"
  33
  34 PA_MODULE_AUTHOR("João Paulo Rechi Vita");
  35 PA_MODULE_DESCRIPTION("BlueZ 5 Bluetooth audio sink and source");
  36 PA_MODULE_VERSION(PACKAGE_VERSION);
  37 PA_MODULE_LOAD_ONCE(false);
  38 PA_MODULE_USAGE("path=<device object path>");
  39
  40 static const char* const valid_modargs[] = {
  41     "path",
  42     NULL
  43 };
  44
  45 struct userdata {
  46     pa_module *module;
  47     pa_core *core;
  48
  49     pa_hook_slot *device_connection_changed_slot;
  50
  51     pa_bluetooth_discovery *discovery;
  52     pa_bluetooth_device *device;
  53 };
  54
  55 /* Run from main thread */
  56 static pa_hook_result_t device_connection_changed_cb(pa_bluetooth_discovery *y, const pa_bluetooth_device *d, struct userdata *u) {
  57     pa_assert(d);
  58     pa_assert(u);
  59
  60     if (d != u->device || pa_bluetooth_device_any_transport_connected(d))
  61         return PA_HOOK_OK;
  62
  63     pa_log_debug("Unloading module for device %s", d->path);
  64     pa_module_unload(u->core, u->module, true);
  65
  66     return PA_HOOK_OK;
  67 }
  68
  69 int pa__init(pa_module* m) {
  70     struct userdata *u;
  71     const char *path;
  72     pa_modargs *ma;
  73
  74     pa_assert(m);
  75
  76     m->userdata = u = pa_xnew0(struct userdata, 1);
  77     u->module = m;
  78     u->core = m->core;
  79
  80     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
  81         pa_log_error("Failed to parse module arguments");
  82         goto fail;
  83     }
  84
  85     if (!(path = pa_modargs_get_value(ma, "path", NULL))) {
  86         pa_log_error("Failed to get device path from module arguments");
  87         goto fail;
  88     }
  89
  90     if (!(u->discovery = pa_bluetooth_discovery_get(m->core)))
  91         goto fail;
  92
  93     if (!(u->device = pa_bluetooth_discovery_get_device_by_path(u->discovery, path))) {
  94         pa_log_error("%s is unknown", path);
  95         goto fail;
  96     }
  97
  98     pa_modargs_free(ma);
  99
 100     u->device_connection_changed_slot =
 101         pa_hook_connect(pa_bluetooth_discovery_hook(u->discovery, PA_BLUETOOTH_HOOK_DEVICE_CONNECTION_CHANGED),
 102                         PA_HOOK_NORMAL, (pa_hook_cb_t) device_connection_changed_cb, u);
 103
 104     return 0;
 105
 106 fail:
 107
 108     if (ma)
 109         pa_modargs_free(ma);
 110
 111     pa__done(m);
 112
 113     return -1;
 114 }
 115
 116 void pa__done(pa_module *m) {
 117     struct userdata *u;
 118
 119     pa_assert(m);
 120
 121     if (!(u = m->userdata))
 122         return;
 123
 124     if (u->device_connection_changed_slot)
 125         pa_hook_slot_free(u->device_connection_changed_slot);
 126
 127     if (u->discovery)
 128         pa_bluetooth_discovery_unref(u->discovery);
 129
 130     pa_xfree(u);
 131 }