Merge pull request #164 from altdesktop/playerctld

add the playerctl daemon
altdesktop · Jan 23, 2020 · 3b11dec · 3b11dec
2 parents 2b162bb + 2636163
commit 3b11dec
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Showing 5 changed files with 449 additions and 57 deletions.
diff --git a/playerctl/meson.build b/playerctl/meson.build
@@ -76,6 +76,14 @@ playerctl_executable = executable(
   install: true,
 )
 
+playerctld_executable = executable(
+  'playerctld',
+  'playerctl-daemon.c', enums,
+  dependencies: deps,
+  include_directories: configuration_inc,
+  install: true,
+)
+
 install_headers(
   headers,
   install_dir: join_paths(get_option('includedir'), 'playerctl'),

diff --git a/playerctl/playerctl-common.c b/playerctl/playerctl-common.c
@@ -194,3 +194,57 @@ GList *pctl_player_name_find_instance(GList *list, gchar *player_id, PlayerctlSo
 void pctl_player_name_list_destroy(GList *list) {
     g_list_free_full(list, (GDestroyNotify)playerctl_player_name_free);
 }
+
+GList *pctl_list_player_names_on_bus(GBusType bus_type, GError **err) {
+    GError *tmp_error = NULL;
+    GList *players = NULL;
+
+    GDBusProxy *proxy = g_dbus_proxy_new_for_bus_sync(
+        bus_type, G_DBUS_PROXY_FLAGS_NONE, NULL, "org.freedesktop.DBus", "/org/freedesktop/DBus",
+        "org.freedesktop.DBus", NULL, &tmp_error);
+
+    if (tmp_error != NULL) {
+        if (tmp_error->domain == G_IO_ERROR && tmp_error->code == G_IO_ERROR_NOT_FOUND) {
+            // XXX: This means the dbus socket address is not found which may
+            // mean that the bus is not running or the address was set
+            // incorrectly. I think we can pass through here because it is true
+            // that there are no names on the bus that is supposed to be at
+            // this socket path. But we need a better way of dealing with this case.
+            g_warning("D-Bus socket address not found, unable to list player names");
+            g_clear_error(&tmp_error);
+            return NULL;
+        }
+        g_propagate_error(err, tmp_error);
+        return NULL;
+    }
+
+    g_debug("Getting list of player names from D-Bus");
+    GVariant *reply = g_dbus_proxy_call_sync(proxy, "ListNames", NULL, G_DBUS_CALL_FLAGS_NONE, -1,
+                                             NULL, &tmp_error);
+
+    if (tmp_error != NULL) {
+        g_propagate_error(err, tmp_error);
+        g_object_unref(proxy);
+        return NULL;
+    }
+
+    GVariant *reply_child = g_variant_get_child_value(reply, 0);
+    gsize reply_count;
+    const gchar **names = g_variant_get_strv(reply_child, &reply_count);
+
+    size_t offset = strlen(MPRIS_PREFIX);
+    for (gsize i = 0; i < reply_count; i += 1) {
+        if (g_str_has_prefix(names[i], MPRIS_PREFIX)) {
+            PlayerctlPlayerName *player_name =
+                pctl_player_name_new(names[i] + offset, pctl_bus_type_to_source(bus_type));
+            players = g_list_append(players, player_name);
+        }
+    }
+
+    g_object_unref(proxy);
+    g_variant_unref(reply);
+    g_variant_unref(reply_child);
+    g_free(names);
+
+    return players;
+}
diff --git a/playerctl/playerctl-common.h b/playerctl/playerctl-common.h
@@ -54,5 +54,7 @@ GList *pctl_player_name_find_instance(GList *list, gchar *player_id, PlayerctlSo
 
 void pctl_player_name_list_destroy(GList *list);
 
+GList *pctl_list_player_names_on_bus(GBusType bus_type, GError **err);
+
 #undef __PLAYERCTL_COMMON_H__
 #endif