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

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2006 Lennart Poettering
   5   Copyright 2009 Canonical Ltd
   6   Copyright (C) 2012 Intel Corporation
   7
   8   PulseAudio is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU Lesser General Public License as published
  10   by the Free Software Foundation; either version 2.1 of the License,
  11   or (at your option) any later version.
  12
  13   PulseAudio is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with PulseAudio; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21   USA.
  22 ***/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <pulse/xmalloc.h>
  29
  30 #include <pulsecore/core.h>
  31 #include <pulsecore/modargs.h>
  32 #include <pulsecore/source-output.h>
  33 #include <pulsecore/source.h>
  34 #include <pulsecore/core-util.h>
  35
  36 #include "module-bluetooth-policy-symdef.h"
  37
  38 PA_MODULE_AUTHOR("Frédéric Dalleau");
  39 PA_MODULE_DESCRIPTION("When a bluetooth sink or source is added, load module-loopback");
  40 PA_MODULE_VERSION(PACKAGE_VERSION);
  41 PA_MODULE_LOAD_ONCE(TRUE);
  42 PA_MODULE_USAGE(
  43         "a2dp_source=<Handle a2dp_source card profile (sink role)?> "
  44         "hfgw=<Handle hfgw card profile (headset role)?>");
  45
  46 static const char* const valid_modargs[] = {
  47     "a2dp_source",
  48     "hfgw",
  49     NULL
  50 };
  51
  52 struct userdata {
  53     bool enable_a2dp_source;
  54     bool enable_hfgw;
  55     pa_hook_slot *source_put_slot;
  56     pa_hook_slot *sink_put_slot;
  57 };
  58
  59 /* When a source is created, loopback it to default sink */
  60 static pa_hook_result_t source_put_hook_callback(pa_core *c, pa_source *source, void *userdata) {
  61     struct userdata *u = userdata;
  62     const char *s;
  63     const char *role;
  64     char *args;
  65
  66     pa_assert(c);
  67     pa_assert(source);
  68
  69     /* Only consider bluetooth sinks and sources */
  70     s = pa_proplist_gets(source->proplist, PA_PROP_DEVICE_BUS);
  71     if (!s)
  72         return PA_HOOK_OK;
  73
  74     if (!pa_streq(s, "bluetooth"))
  75         return PA_HOOK_OK;
  76
  77     s = pa_proplist_gets(source->proplist, "bluetooth.protocol");
  78     if (!s)
  79         return PA_HOOK_OK;
  80
  81     if (u->enable_a2dp_source && pa_streq(s, "a2dp_source")) /* A2DP profile (we're doing sink role) */
  82         role = "music";
  83     else if (u->enable_hfgw && pa_streq(s, "hfgw")) /* HFP profile (we're doing headset role) */
  84         role = "phone";
  85     else {
  86         pa_log_debug("Profile %s cannot be selected for loopback", s);
  87         return PA_HOOK_OK;
  88     }
  89
  90     /* Load module-loopback */
  91     args = pa_sprintf_malloc("source=\"%s\" source_dont_move=\"true\" sink_input_properties=\"media.role=%s\"", source->name, role);
  92     (void) pa_module_load(c, "module-loopback", args);
  93     pa_xfree(args);
  94
  95     return PA_HOOK_OK;
  96 }
  97
  98 /* When a sink is created, loopback it to default source */
  99 static pa_hook_result_t sink_put_hook_callback(pa_core *c, pa_sink *sink, void *userdata) {
 100     struct userdata *u = userdata;
 101     const char *s;
 102     const char *role;
 103     char *args;
 104
 105     pa_assert(c);
 106     pa_assert(sink);
 107
 108     /* Only consider bluetooth sinks and sources */
 109     s = pa_proplist_gets(sink->proplist, PA_PROP_DEVICE_BUS);
 110     if (!s)
 111         return PA_HOOK_OK;
 112
 113     if (!pa_streq(s, "bluetooth"))
 114         return PA_HOOK_OK;
 115
 116     s = pa_proplist_gets(sink->proplist, "bluetooth.protocol");
 117     if (!s)
 118         return PA_HOOK_OK;
 119
 120     if (u->enable_hfgw && pa_streq(s, "hfgw")) /* HFP profile (we're doing headset role) */
 121         role = "phone";
 122     else {
 123         pa_log_debug("Profile %s cannot be selected for loopback", s);
 124         return PA_HOOK_OK;
 125     }
 126
 127     /* Load module-loopback */
 128     args = pa_sprintf_malloc("sink=\"%s\" sink_dont_move=\"true\" source_output_properties=\"media.role=%s\"", sink->name, role);
 129     (void) pa_module_load(c, "module-loopback", args);
 130     pa_xfree(args);
 131
 132     return PA_HOOK_OK;
 133 }
 134
 135 int pa__init(pa_module *m) {
 136     pa_modargs *ma;
 137     struct userdata *u;
 138
 139     pa_assert(m);
 140
 141     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 142         pa_log_error("Failed to parse module arguments");
 143         return -1;
 144     }
 145
 146     m->userdata = u = pa_xnew(struct userdata, 1);
 147
 148     u->enable_a2dp_source = TRUE;
 149     if (pa_modargs_get_value_boolean(ma, "a2dp_source", &u->enable_a2dp_source) < 0) {
 150         pa_log("Failed to parse a2dp_source argument.");
 151         goto fail;
 152     }
 153
 154     u->enable_hfgw = TRUE;
 155     if (pa_modargs_get_value_boolean(ma, "hfgw", &u->enable_hfgw) < 0) {
 156         pa_log("Failed to parse hfgw argument.");
 157         goto fail;
 158     }
 159
 160     u->source_put_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_PUT], PA_HOOK_NORMAL, (pa_hook_cb_t) source_put_hook_callback, u);
 161
 162     u->sink_put_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_PUT], PA_HOOK_NORMAL, (pa_hook_cb_t) sink_put_hook_callback, u);
 163
 164     pa_modargs_free(ma);
 165     return 0;
 166
 167 fail:
 168     pa_modargs_free(ma);
 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->source_put_slot)
 181         pa_hook_slot_free(u->source_put_slot);
 182
 183     if (u->sink_put_slot)
 184         pa_hook_slot_free(u->sink_put_slot);
 185
 186     pa_xfree(u);
 187 }