[RFCv3 26/43] bluetooth: Unload module-bluez5-device on device's disconnection

[jprvita@xxxxxxxxx (jprvita@xxxxxxxxx)]

From: Jo?o Paulo Rechi Vita <jprvita@xxxxxxxxxxxxx>

---
 src/modules/bluetooth/module-bluez5-device.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/modules/bluetooth/module-bluez5-device.c b/src/modules/bluetooth/module-bluez5-device.c
index 18f40fa..121a75d 100644
--- a/src/modules/bluetooth/module-bluez5-device.c
+++ b/src/modules/bluetooth/module-bluez5-device.c
@@ -47,10 +47,26 @@ struct userdata {
     pa_core *core;
     pa_modargs *modargs;
 
+    pa_hook_slot *device_connection_changed_slot;
+
     pa_bluetooth_discovery *discovery;
     pa_bluetooth_device *device;
 };
 
+/* Run from main thread */
+static pa_hook_result_t device_connection_changed_cb(pa_bluetooth_discovery *y, const pa_bluetooth_device *d, struct userdata *u) {
+    pa_assert(d);
+    pa_assert(u);
+
+    if (d != u->device || pa_bluetooth_device_any_transport_connected(d))
+        return PA_HOOK_OK;
+
+    pa_log_debug("Unloading module for device %s", d->path);
+    pa_module_unload(u->core, u->module, true);
+
+    return PA_HOOK_OK;
+}
+
 int pa__init(pa_module* m) {
     struct userdata *u;
     const char *path;
@@ -79,6 +95,10 @@ int pa__init(pa_module* m) {
         goto fail;
     }
 
+    u->device_connection_changed_slot =
+        pa_hook_connect(pa_bluetooth_discovery_hook(u->discovery, PA_BLUETOOTH_HOOK_DEVICE_CONNECTION_CHANGED),
+                        PA_HOOK_NORMAL, (pa_hook_cb_t) device_connection_changed_cb, u);
+
     return 0;
 
 fail:
@@ -96,6 +116,9 @@ void pa__done(pa_module *m) {
     if (!(u = m->userdata))
         return;
 
+    if (u->device_connection_changed_slot)
+        pa_hook_slot_free(u->device_connection_changed_slot);
+
     if (u->modargs)
         pa_modargs_free(u->modargs);
 
-- 
1.8.3.1