[PATCH v2 3/8] sink-input: clear the preferred_sink if it is default_sink

[Hui Wang <hui.wang@xxxxxxxxxxxxx>]

When the user moves a stream to the current default sink, the
preferred_sink should be set to NULL and module-stream-restore
should clear the routing for that stream in the stream database. From
that point on the stream will be always routed to the default sink.

Signed-off-by: Hui Wang <hui.wang@xxxxxxxxxxxxx>
---
 src/modules/module-stream-restore.c | 19 ++++++++++++++-----
 src/pulsecore/sink-input.c          |  6 +++++-
 2 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/src/modules/module-stream-restore.c b/src/modules/module-stream-restore.c
index 366f1a5a8..142d1e3b4 100644
--- a/src/modules/module-stream-restore.c
+++ b/src/modules/module-stream-restore.c
@@ -1311,13 +1311,22 @@ static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint3
             mute_updated = !created_new_entry && (!old->muted_valid || entry->muted != old->muted);
         }
 
-        if (sink_input->preferred_sink != NULL) {
+        if (sink_input->preferred_sink != NULL || !created_new_entry) {
             pa_xfree(entry->device);
-            entry->device = pa_xstrdup(sink_input->preferred_sink);
-            entry->device_valid = true;
+            if (sink_input->preferred_sink != NULL) {
+                entry->device = pa_xstrdup(sink_input->preferred_sink);
+                entry->device_valid = true;
+            } else {
+                entry->device = NULL;
+                entry->device_valid = false;
+            }
 
-            device_updated = !created_new_entry && (!old->device_valid || !pa_streq(entry->device, old->device));
-            if (sink_input->sink->card) {
+            device_updated = !created_new_entry && !pa_safe_streq(entry->device, old->device);
+            if (entry->device_valid == false) {
+                pa_xfree(entry->card);
+                entry->card = NULL;
+                entry->card_valid = false;
+            } else {
                 pa_xfree(entry->card);
                 entry->card = pa_xstrdup(sink_input->sink->card->name);
                 entry->card_valid = true;
diff --git a/src/pulsecore/sink-input.c b/src/pulsecore/sink-input.c
index 4dbc0cdef..f87c1f49f 100644
--- a/src/pulsecore/sink-input.c
+++ b/src/pulsecore/sink-input.c
@@ -1925,8 +1925,12 @@ int pa_sink_input_finish_move(pa_sink_input *i, pa_sink *dest, bool save) {
        save the preferred_sink */
     if (save) {
         pa_xfree(i->preferred_sink);
-        i->preferred_sink = pa_xstrdup(dest->name);
+        if (dest == dest->core->default_sink)
+            i->preferred_sink = NULL;
+        else
+            i->preferred_sink = pa_xstrdup(dest->name);
     }
+
     pa_idxset_put(dest->inputs, pa_sink_input_ref(i), NULL);
 
     PA_HASHMAP_FOREACH(v, i->volume_factor_sink_items, state)
-- 
2.17.1

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