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