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/source-output.h>
  32 #include <pulsecore/source.h>
  33 #include <pulsecore/core-util.h>
  34
  35 #include "module-bluetooth-policy-symdef.h"
  36
  37 PA_MODULE_AUTHOR("Frédéric Dalleau");
  38 PA_MODULE_DESCRIPTION("When an A2DP source is added, load module-loopback");
  39 PA_MODULE_VERSION(PACKAGE_VERSION);
  40 PA_MODULE_LOAD_ONCE(TRUE);
  41
  42 struct userdata {
  43      pa_hook_slot *source_put_slot;
  44 };
  45
  46 /* When a source is created, loopback it to default sink */
  47 static pa_hook_result_t source_put_hook_callback(pa_core *c, pa_source *source, void* userdata) {
  48     const char *s;
  49     const char *role;
  50     char *args;
  51
  52     pa_assert(c);
  53     pa_assert(source);
  54
  55     /* Only consider bluetooth sinks and sources */
  56     s = pa_proplist_gets(source->proplist, PA_PROP_DEVICE_BUS);
  57     if (!s)
  58         return PA_HOOK_OK;
  59
  60     if (!pa_streq(s, "bluetooth"))
  61         return PA_HOOK_OK;
  62
  63     /* Restrict to A2DP profile (sink role) */
  64     s = pa_proplist_gets(source->proplist, "bluetooth.protocol");
  65     if (!s)
  66         return PA_HOOK_OK;
  67
  68     if pa_streq(s, "a2dp_source")
  69         role = "music";
  70     else {
  71         pa_log_debug("Profile %s cannot be selected for loopback", s);
  72         return PA_HOOK_OK;
  73     }
  74
  75     /* Load module-loopback */
  76     args = pa_sprintf_malloc("source=\"%s\" source_dont_move=\"true\" sink_input_properties=\"media.role=%s\"", source->name, role);
  77     (void) pa_module_load(c, "module-loopback", args);
  78     pa_xfree(args);
  79
  80     return PA_HOOK_OK;
  81 }
  82
  83 int pa__init(pa_module*m) {
  84     struct userdata *u;
  85
  86     pa_assert(m);
  87
  88     m->userdata = u = pa_xnew(struct userdata, 1);
  89
  90     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);
  91
  92     return 0;
  93 }
  94
  95 void pa__done(pa_module*m) {
  96     struct userdata *u;
  97
  98     pa_assert(m);
  99
 100     if (!(u = m->userdata))
 101         return;
 102
 103     if (u->source_put_slot)
 104         pa_hook_slot_free(u->source_put_slot);
 105
 106     pa_xfree(u);
 107 }