bluetooth: Revive module-bluetooth-discover

Create a wrapper module called module-bluetooth-discover to avoid
breaking backward-compatibility of default.pa. This wrapper may
eventually be dropped altoghether with BlueZ 4 support.

src/Makefile.am

@@ -1322,6 +1322,7 @@ endif
 
 if HAVE_BLUEZ
 modlibexec_LTLIBRARIES += \
+		module-bluetooth-discover.la \
 		module-bluetooth-policy.la
 endif
 
@@ -1426,6 +1427,7 @@ SYMDEF_FILES = \
 		module-udev-detect-symdef.h \
 		module-systemd-login-symdef.h \
 		module-bluetooth-policy-symdef.h \
+		module-bluetooth-discover-symdef.h \
 		module-bluez4-discover-symdef.h \
 		module-bluez4-device-symdef.h \
 		module-bluez5-discover-symdef.h \
@@ -2031,6 +2033,12 @@ module_bluetooth_policy_la_LDFLAGS = $(MODULE_LDFLAGS)
 module_bluetooth_policy_la_LIBADD = $(MODULE_LIBADD)
 module_bluetooth_policy_la_CFLAGS = $(AM_CFLAGS) $(DBUS_CFLAGS)
 
+# Bluetooth discover
+module_bluetooth_discover_la_SOURCES = modules/bluetooth/module-bluetooth-discover.c
+module_bluetooth_discover_la_LDFLAGS = $(MODULE_LDFLAGS)
+module_bluetooth_discover_la_LIBADD = $(MODULE_LIBADD)
+module_bluetooth_discover_la_CFLAGS = $(AM_CFLAGS)
+
 # Bluetooth BlueZ 4 sink / source
 module_bluez4_discover_la_SOURCES = modules/bluetooth/module-bluez4-discover.c
 module_bluez4_discover_la_LDFLAGS = $(MODULE_LDFLAGS)

src/modules/bluetooth/module-bluetooth-discover.c

@@ -0,0 +1,78 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2013 João Paulo Rechi Vita
+
+  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 <pulsecore/core-util.h>
+#include <pulsecore/macro.h>
+#include <pulsecore/module.h>
+
+#include "module-bluetooth-discover-symdef.h"
+
+PA_MODULE_AUTHOR("João Paulo Rechi Vita");
+PA_MODULE_DESCRIPTION("Detect available Bluetooth daemon and load the corresponding discovery module");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(true);
+
+struct userdata {
+    pa_module *bluez5_module;
+    pa_module *bluez4_module;
+};
+
+int pa__init(pa_module* m) {
+    struct userdata *u;
+
+    pa_assert(m);
+
+    m->userdata = u = pa_xnew0(struct userdata, 1);
+
+    if (pa_module_exists("module-bluez5-discover"))
+        u->bluez5_module = pa_module_load(m->core, "module-bluez5-discover",  NULL);
+
+    if (pa_module_exists("module-bluez4-discover"))
+        u->bluez4_module = pa_module_load(m->core, "module-bluez4-discover",  NULL);
+
+    if (!u->bluez5_module && !u->bluez4_module) {
+        pa_xfree(u);
+        return -1;
+    }
+
+    return 0;
+}
+
+void pa__done(pa_module* m) {
+    struct userdata *u;
+
+    pa_assert(m);
+
+    if (!(u = m->userdata))
+        return;
+
+    if (u->bluez5_module)
+        pa_module_unload(m->core, u->bluez5_module, true);
+
+    if (u->bluez4_module)
+        pa_module_unload(m->core, u->bluez4_module, true);
+
+    pa_xfree(u);
+}