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-rw-r--r--plugins/sound/gsd-sound-manager.c362
1 files changed, 362 insertions, 0 deletions
diff --git a/plugins/sound/gsd-sound-manager.c b/plugins/sound/gsd-sound-manager.c
new file mode 100644
index 0000000..5fdb062
--- /dev/null
+++ b/plugins/sound/gsd-sound-manager.c
@@ -0,0 +1,362 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Lennart Poettering <lennart@poettering.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <signal.h>
+
+#include <locale.h>
+
+#include <glib/gi18n.h>
+#include <gio/gio.h>
+#include <pulse/pulseaudio.h>
+
+#include "gsd-sound-manager.h"
+#include "gnome-settings-profile.h"
+
+struct _GsdSoundManager
+{
+ GObject parent;
+
+ GSettings *settings;
+ GList *monitors;
+ guint timeout;
+};
+
+static void gsd_sound_manager_class_init (GsdSoundManagerClass *klass);
+static void gsd_sound_manager_init (GsdSoundManager *sound_manager);
+static void gsd_sound_manager_finalize (GObject *object);
+
+G_DEFINE_TYPE (GsdSoundManager, gsd_sound_manager, G_TYPE_OBJECT)
+
+static gpointer manager_object = NULL;
+
+static void
+sample_info_cb (pa_context *c, const pa_sample_info *i, int eol, void *userdata)
+{
+ pa_operation *o;
+
+ if (!i)
+ return;
+
+ g_debug ("Found sample %s", i->name);
+
+ /* We only flush those samples which have an XDG sound name
+ * attached, because only those originate from themeing */
+ if (!(pa_proplist_gets (i->proplist, PA_PROP_EVENT_ID)))
+ return;
+
+ g_debug ("Dropping sample %s from cache", i->name);
+
+ if (!(o = pa_context_remove_sample (c, i->name, NULL, NULL))) {
+ g_debug ("pa_context_remove_sample (): %s", pa_strerror (pa_context_errno (c)));
+ return;
+ }
+
+ pa_operation_unref (o);
+
+ /* We won't wait until the operation is actually executed to
+ * speed things up a bit.*/
+}
+
+static void
+flush_cache (void)
+{
+ pa_mainloop *ml = NULL;
+ pa_context *c = NULL;
+ pa_proplist *pl = NULL;
+ pa_operation *o = NULL;
+
+ g_debug ("Flushing sample cache");
+
+ if (!(ml = pa_mainloop_new ())) {
+ g_debug ("Failed to allocate pa_mainloop");
+ goto fail;
+ }
+
+ if (!(pl = pa_proplist_new ())) {
+ g_debug ("Failed to allocate pa_proplist");
+ goto fail;
+ }
+
+ pa_proplist_sets (pl, PA_PROP_APPLICATION_NAME, PACKAGE_NAME);
+ pa_proplist_sets (pl, PA_PROP_APPLICATION_VERSION, PACKAGE_VERSION);
+ pa_proplist_sets (pl, PA_PROP_APPLICATION_ID, "org.gnome.SettingsDaemon.Sound");
+
+ if (!(c = pa_context_new_with_proplist (pa_mainloop_get_api (ml), PACKAGE_NAME, pl))) {
+ g_debug ("Failed to allocate pa_context");
+ goto fail;
+ }
+
+ pa_proplist_free (pl);
+ pl = NULL;
+
+ if (pa_context_connect (c, NULL, PA_CONTEXT_NOAUTOSPAWN, NULL) < 0) {
+ g_debug ("pa_context_connect(): %s", pa_strerror (pa_context_errno (c)));
+ goto fail;
+ }
+
+ /* Wait until the connection is established */
+ while (pa_context_get_state (c) != PA_CONTEXT_READY) {
+
+ if (!PA_CONTEXT_IS_GOOD (pa_context_get_state (c))) {
+ g_debug ("Connection failed: %s", pa_strerror (pa_context_errno (c)));
+ goto fail;
+ }
+
+ if (pa_mainloop_iterate (ml, TRUE, NULL) < 0) {
+ g_debug ("pa_mainloop_iterate() failed");
+ goto fail;
+ }
+ }
+
+ /* Enumerate all cached samples */
+ if (!(o = pa_context_get_sample_info_list (c, sample_info_cb, NULL))) {
+ g_debug ("pa_context_get_sample_info_list(): %s", pa_strerror (pa_context_errno (c)));
+ goto fail;
+ }
+
+ /* Wait until our operation is finished and there's nothing
+ * more queued to send to the server */
+ while (pa_operation_get_state (o) == PA_OPERATION_RUNNING || pa_context_is_pending (c)) {
+
+ if (!PA_CONTEXT_IS_GOOD (pa_context_get_state (c))) {
+ g_debug ("Connection failed: %s", pa_strerror (pa_context_errno (c)));
+ goto fail;
+ }
+
+ if (pa_mainloop_iterate (ml, TRUE, NULL) < 0) {
+ g_debug ("pa_mainloop_iterate() failed");
+ goto fail;
+ }
+ }
+
+ g_debug ("Sample cache flushed");
+
+fail:
+ if (o) {
+ pa_operation_cancel (o);
+ pa_operation_unref (o);
+ }
+
+ if (c) {
+ pa_context_disconnect (c);
+ pa_context_unref (c);
+ }
+
+ if (pl)
+ pa_proplist_free (pl);
+
+ if (ml)
+ pa_mainloop_free (ml);
+}
+
+static gboolean
+flush_cb (GsdSoundManager *manager)
+{
+ flush_cache ();
+ manager->timeout = 0;
+ return FALSE;
+}
+
+static void
+trigger_flush (GsdSoundManager *manager)
+{
+
+ if (manager->timeout)
+ g_source_remove (manager->timeout);
+
+ /* We delay the flushing a bit so that we can coalesce
+ * multiple changes into a single cache flush */
+ manager->timeout = g_timeout_add (500, (GSourceFunc) flush_cb, manager);
+ g_source_set_name_by_id (manager->timeout, "[gnome-settings-daemon] flush_cb");
+}
+
+static void
+settings_changed_cb (GSettings *settings,
+ const char *key,
+ GsdSoundManager *manager)
+{
+ trigger_flush (manager);
+}
+
+static void
+register_config_callback (GsdSoundManager *manager)
+{
+ manager->settings = g_settings_new ("org.gnome.desktop.sound");
+ g_signal_connect (G_OBJECT (manager->settings), "changed",
+ G_CALLBACK (settings_changed_cb), manager);
+}
+
+static void
+file_monitor_changed_cb (GFileMonitor *monitor,
+ GFile *file,
+ GFile *other_file,
+ GFileMonitorEvent event,
+ GsdSoundManager *manager)
+{
+ g_debug ("Theme dir changed");
+ trigger_flush (manager);
+}
+
+static gboolean
+register_directory_callback (GsdSoundManager *manager,
+ const char *path,
+ GError **error)
+{
+ GFile *f;
+ GFileMonitor *m;
+ gboolean succ = FALSE;
+
+ g_debug ("Registering directory monitor for %s", path);
+
+ f = g_file_new_for_path (path);
+
+ m = g_file_monitor_directory (f, 0, NULL, error);
+
+ if (m != NULL) {
+ g_signal_connect (m, "changed", G_CALLBACK (file_monitor_changed_cb), manager);
+
+ manager->monitors = g_list_prepend (manager->monitors, m);
+
+ succ = TRUE;
+ }
+
+ g_object_unref (f);
+
+ return succ;
+}
+
+gboolean
+gsd_sound_manager_start (GsdSoundManager *manager,
+ GError **error)
+{
+ guint i;
+ const gchar * const * dirs;
+ char *p;
+
+ g_debug ("Starting sound manager");
+ gnome_settings_profile_start (NULL);
+
+ /* We listen for change of the selected theme ... */
+ register_config_callback (manager);
+
+ /* ... and we listen to changes of the theme base directories
+ * in $HOME ...*/
+ p = g_build_filename (g_get_user_data_dir (), "sounds", NULL);
+ if (g_mkdir_with_parents(p, 0700) == 0)
+ register_directory_callback (manager, p, NULL);
+ g_free (p);
+
+ /* ... and globally. */
+ dirs = g_get_system_data_dirs ();
+ for (i = 0; dirs[i] != NULL; i++) {
+ p = g_build_filename (dirs[i], "sounds", NULL);
+ if (g_file_test (p, G_FILE_TEST_IS_DIR))
+ register_directory_callback (manager, p, NULL);
+ g_free (p);
+ }
+
+ gnome_settings_profile_end (NULL);
+
+ return TRUE;
+}
+
+void
+gsd_sound_manager_stop (GsdSoundManager *manager)
+{
+ g_debug ("Stopping sound manager");
+
+ if (manager->settings != NULL) {
+ g_object_unref (manager->settings);
+ manager->settings = NULL;
+ }
+
+ if (manager->timeout) {
+ g_source_remove (manager->timeout);
+ manager->timeout = 0;
+ }
+
+ while (manager->monitors) {
+ g_file_monitor_cancel (G_FILE_MONITOR (manager->monitors->data));
+ g_object_unref (manager->monitors->data);
+ manager->monitors = g_list_delete_link (manager->monitors, manager->monitors);
+ }
+}
+
+static void
+gsd_sound_manager_dispose (GObject *object)
+{
+ GsdSoundManager *manager;
+
+ manager = GSD_SOUND_MANAGER (object);
+
+ gsd_sound_manager_stop (manager);
+
+ G_OBJECT_CLASS (gsd_sound_manager_parent_class)->dispose (object);
+}
+
+static void
+gsd_sound_manager_class_init (GsdSoundManagerClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->dispose = gsd_sound_manager_dispose;
+ object_class->finalize = gsd_sound_manager_finalize;
+}
+
+static void
+gsd_sound_manager_init (GsdSoundManager *manager)
+{
+}
+
+static void
+gsd_sound_manager_finalize (GObject *object)
+{
+ GsdSoundManager *sound_manager;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (GSD_IS_SOUND_MANAGER (object));
+
+ sound_manager = GSD_SOUND_MANAGER (object);
+
+ g_return_if_fail (sound_manager);
+
+ G_OBJECT_CLASS (gsd_sound_manager_parent_class)->finalize (object);
+}
+
+GsdSoundManager *
+gsd_sound_manager_new (void)
+{
+ if (manager_object) {
+ g_object_ref (manager_object);
+ } else {
+ manager_object = g_object_new (GSD_TYPE_SOUND_MANAGER, NULL);
+ g_object_add_weak_pointer (manager_object, (gpointer *) &manager_object);
+ }
+
+ return GSD_SOUND_MANAGER (manager_object);
+}
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