This is a basic module for enabling loopback as soon as a new bluetooth A2DP
source is created. The module is given a source and a media role using command
line. This allows module-intended-roles or module-device-manager to choose a
target sink for the stream.
---
src/Makefile.am | 7 ++
src/modules/bluetooth/module-bluetooth-policy.c | 112 +++++++++++++++++++++++
2 files changed, 119 insertions(+), 0 deletions(-)
create mode 100644 src/modules/bluetooth/module-bluetooth-policy.c
diff --git a/src/Makefile.am b/src/Makefile.am
index 21ac310..e914ade 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1236,6 +1236,7 @@ modlibexec_LTLIBRARIES += \
module-bluetooth-discover.la \
libbluetooth-ipc.la \
libbluetooth-sbc.la \
+ module-bluetooth-policy.la \
module-bluetooth-device.la
pulselibexec_PROGRAMS += \
@@ -1327,6 +1328,7 @@ SYMDEF_FILES = \
module-systemd-login-symdef.h \
module-bluetooth-proximity-symdef.h \
module-bluetooth-discover-symdef.h \
+ module-bluetooth-policy-symdef.h \
module-bluetooth-device-symdef.h \
module-raop-sink-symdef.h \
module-raop-discover-symdef.h \
@@ -1950,6 +1952,11 @@ module_bluetooth_device_la_LDFLAGS = $(MODULE_LDFLAGS)
module_bluetooth_device_la_LIBADD = $(MODULE_LIBADD) $(DBUS_LIBS) libbluetooth-util.la libbluetooth-ipc.la libbluetooth-sbc.la
module_bluetooth_device_la_CFLAGS = $(AM_CFLAGS) $(DBUS_CFLAGS) -I$(top_srcdir)/src/modules/bluetooth/sbc
+module_bluetooth_policy_la_SOURCES = modules/bluetooth/module-bluetooth-policy.c
+module_bluetooth_policy_la_LDFLAGS = $(MODULE_LDFLAGS)
+module_bluetooth_policy_la_LIBADD = $(MODULE_LIBADD) $(DBUS_LIBS) libbluetooth-util.la
+module_bluetooth_policy_la_CFLAGS = $(AM_CFLAGS) $(DBUS_CFLAGS)
+
# Apple Airtunes/RAOP
module_raop_sink_la_SOURCES = modules/raop/module-raop-sink.c
module_raop_sink_la_LDFLAGS = $(MODULE_LDFLAGS)
diff --git a/src/modules/bluetooth/module-bluetooth-policy.c b/src/modules/bluetooth/module-bluetooth-policy.c
new file mode 100644
index 0000000..8f1682b
--- /dev/null
+++ b/src/modules/bluetooth/module-bluetooth-policy.c
@@ -0,0 +1,112 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2006 Lennart Poettering
+ Copyright 2009 Canonical Ltd
+ Copyright (C) 2012 Intel Corporation
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2.1 of the License,
+ or (at your option) any later version.
+
+ PulseAudio is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/core.h>
+#include <pulsecore/source-output.h>
+#include <pulsecore/source.h>
+#include <pulsecore/core-util.h>
+
+#include "module-bluetooth-policy-symdef.h"
+
+PA_MODULE_AUTHOR("Fr?d?ric Dalleau");
+PA_MODULE_DESCRIPTION("When an A2DP source is added, load module-loopback");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(TRUE);
+
+ struct userdata {
+ pa_hook_slot *source_put_slot;
+};
+
+/* When a source is created, loopback default the source to default sink */
+static pa_hook_result_t source_put_hook_callback(pa_core *c, pa_source *source, void* userdata) {
+ const char *s;
+ const char *role;
+ char *args;
+
+ pa_assert(c);
+ pa_assert(source);
+
+ /* Don't want to run during startup or shutdown */
+ if (c->state != PA_CORE_RUNNING)
+ return PA_HOOK_OK;
+
+ /* Only consider bluetooth sinks and sources */
+ s = pa_proplist_gets(source->proplist, PA_PROP_DEVICE_BUS);
+ if (!s)
+ return PA_HOOK_OK;
+
+ if (!pa_streq(s, "bluetooth"))
+ return PA_HOOK_OK;
+
+ /* Restrict to A2DP profile (sink role) */
+ s = pa_proplist_gets(source->proplist, "bluetooth.protocol");
+ if (!s)
+ return PA_HOOK_OK;
+
+ if pa_streq(s, "a2dp_source")
+ role = "music";
+ else {
+ pa_log_debug("Profile %s cannot be selected for loopback", s);
+ return PA_HOOK_OK;
+ }
+
+ /* Load module-loopback */
+ args = pa_sprintf_malloc("source=\"%s\" source_dont_move=\"true\" sink_input_properties=\"media.role=%s\"", source->name, role);
+ (void) pa_module_load(c, "module-loopback", args);
+ pa_xfree(args);
+
+ return PA_HOOK_OK;
+}
+
+int pa__init(pa_module*m) {
+ struct userdata *u;
+
+ pa_assert(m);
+
+ m->userdata = u = pa_xnew(struct userdata, 1);
+
+ /* A little bit later than module-rescue-streams... */
+ u->source_put_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_PUT], PA_HOOK_LATE+20, (pa_hook_cb_t) source_put_hook_callback, u);
+
+ return 0;
+}
+
+void pa__done(pa_module*m) {
+ struct userdata *u;
+
+ pa_assert(m);
+
+ if (!(u = m->userdata))
+ return;
+
+ if (u->source_put_slot)
+ pa_hook_slot_free(u->source_put_slot);
+
+ pa_xfree(u);
+}
--
1.7.5.4
