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context: activate loopback to drivers

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We start with setting the visitied flag on the driver. Still follow the
links to other visited nodes because it might make them active. for
example, adding a link between two midi ports should make the midi
driver running so that data flows between the ports.

See #1559
This commit is contained in:
Wim Taymans 2021-08-31 11:45:14 +02:00
parent a4f3a23095
commit 3300f5ddc4
1 changed files with 12 additions and 6 deletions
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18
src/pipewire/context.c
View file

@ -985,15 +985,18 @@ static int collect_nodes(struct pw_context *context, struct pw_impl_node *driver
spa_list_for_each(l, &p->links, input_link) {
t = l->output->node;
if (t->visited || !t->active)
if (!t->active)
continue;
pw_impl_link_prepare(l);
if (!l->passive && l->prepared)
if (!l->prepared)
continue;
if (!l->passive)
driver->passive = n->passive = false;
if (l->prepared) {
if (!t->visited) {
t->visited = true;
spa_list_append(&queue, &t->sort_link);
}
@ -1003,15 +1006,18 @@ static int collect_nodes(struct pw_context *context, struct pw_impl_node *driver
spa_list_for_each(l, &p->links, output_link) {
t = l->input->node;
if (t->visited || !t->active)
if (!t->active)
continue;
pw_impl_link_prepare(l);
if (!l->passive && l->prepared)
if (!l->prepared)
continue;
if (!l->passive)
driver->passive = n->passive = false;
if (l->prepared) {
if (!t->visited) {
t->visited = true;
spa_list_append(&queue, &t->sort_link);
}