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/* WirePlumber
*
* Copyright © 2019 Collabora Ltd.
* @author George Kiagiadakis <george.kiagiadakis@collabora.com>
*
* SPDX-License-Identifier: MIT
*/
#include <wp/wp.h>
#include <pipewire/pipewire.h>
#include <pipewire/extensions/session-manager.h>
struct module_data
{
WpExportedSession *session;
WpObjectManager *om;
};
static void
select_new_default_ep (struct module_data * data, WpDefaultEndpointType type,
const gchar * media_class, guint32 blacklist_id)
{
g_autoptr (GPtrArray) arr = wp_object_manager_get_objects (data->om, 0);
guint32 max_priority = 0;
guint32 best_id = 0, def_id;
for (guint i = 0; i < arr->len; i++) {
WpEndpoint *ep = g_ptr_array_index (arr, i);
guint32 id = wp_exported_endpoint_get_global_id (WP_EXPORTED_ENDPOINT (ep));
guint32 priority = 0;
const gchar *priority_str;
/* skip blacklisted */
if (id == blacklist_id)
continue;
/* skip if the endpoint is of another type */
if (g_strcmp0 (media_class, wp_endpoint_get_media_class (ep)) != 0)
continue;
g_autoptr (WpProperties) properties = wp_endpoint_get_properties (ep);
priority_str = wp_properties_get (properties, "endpoint.priority");
if (priority_str)
priority = atoi (priority_str);
if (priority >= max_priority) {
best_id = id;
max_priority = priority;
}
}
def_id = wp_session_get_default_endpoint (WP_SESSION (data->session), type);
if (def_id != best_id) {
g_autofree gchar *type_str =
g_enum_to_string (WP_TYPE_DEFAULT_ENDPOINT_TYPE, type);
g_debug ("selecting default endpoint for %s, old:%u, new:%u (priority %u)",
type_str, def_id, best_id, max_priority);
wp_session_set_default_endpoint (WP_SESSION (data->session), type, best_id);
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}
static void
on_endpoint_added (WpObjectManager * om, WpEndpoint * ep,
struct module_data * data)
{
WpDefaultEndpointType type;
const gchar *media_class;
media_class = wp_endpoint_get_media_class (ep);
if (g_strcmp0 (media_class, "Audio/Source") == 0)
type = WP_DEFAULT_ENDPOINT_TYPE_AUDIO_SOURCE;
else if (g_strcmp0 (media_class, "Audio/Sink") == 0)
type = WP_DEFAULT_ENDPOINT_TYPE_AUDIO_SINK;
else if (g_strcmp0 (media_class, "Video/Source") == 0)
type = WP_DEFAULT_ENDPOINT_TYPE_VIDEO_SOURCE;
else
return;
select_new_default_ep (data, type, media_class, 0);
}
static void
on_endpoint_removed (WpObjectManager * om, WpEndpoint * ep,
struct module_data * data)
{
guint32 ep_id, def_id;
WpDefaultEndpointType type;
const gchar *media_class;
media_class = wp_endpoint_get_media_class (ep);
if (g_strcmp0 (media_class, "Audio/Source") == 0)
type = WP_DEFAULT_ENDPOINT_TYPE_AUDIO_SOURCE;
else if (g_strcmp0 (media_class, "Audio/Sink") == 0)
type = WP_DEFAULT_ENDPOINT_TYPE_AUDIO_SINK;
else if (g_strcmp0 (media_class, "Video/Source") == 0)
type = WP_DEFAULT_ENDPOINT_TYPE_VIDEO_SOURCE;
else
return;
ep_id = wp_exported_endpoint_get_global_id (WP_EXPORTED_ENDPOINT (ep));
def_id = wp_session_get_default_endpoint (WP_SESSION (data->session), type);
if (ep_id == def_id)
select_new_default_ep (data, type, media_class, ep_id);
}
static void
module_destroy (gpointer d)
{
struct module_data *data = d;
g_clear_object (&data->om);
wp_exported_unexport (WP_EXPORTED (data->session));
g_clear_object (&data->session);
g_slice_free (struct module_data, data);
}
void
wireplumber__module_init (WpModule * module, WpCore * core, GVariant * args)
{
struct module_data *data = g_slice_new0 (struct module_data);
wp_module_set_destroy_callback (module, module_destroy, data);
data->session = wp_exported_session_new (core);
wp_exported_session_set_property (data->session,
PW_KEY_SESSION_ID, "wireplumber");
wp_exported_export (WP_EXPORTED (data->session), NULL, NULL, NULL);
data->om = wp_object_manager_new ();
g_signal_connect (data->om, "object-added",
(GCallback) on_endpoint_added, data);
g_signal_connect (data->om, "object-removed",
(GCallback) on_endpoint_removed, data);
wp_object_manager_add_object_interest (data->om,
WP_TYPE_EXPORTED_ENDPOINT, NULL);
wp_core_install_object_manager (core, data->om);
}