/* -*- 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"
#define GSD_SOUND_MANAGER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GSD_TYPE_SOUND_MANAGER, GsdSoundManagerPrivate))
struct GsdSoundManagerPrivate
{
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->priv->timeout = 0;
return FALSE;
}
static void
trigger_flush (GsdSoundManager *manager)
{
if (manager->priv->timeout)
g_source_remove (manager->priv->timeout);
/* We delay the flushing a bit so that we can coalesce
* multiple changes into a single cache flush */
manager->priv->timeout = g_timeout_add (500, (GSourceFunc) flush_cb, manager);
g_source_set_name_by_id (manager->priv->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->priv->settings = g_settings_new ("org.gnome.desktop.sound");
g_signal_connect (G_OBJECT (manager->priv->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->priv->monitors = g_list_prepend (manager->priv->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->priv->settings != NULL) {
g_object_unref (manager->priv->settings);
manager->priv->settings = NULL;
}
if (manager->priv->timeout) {
g_source_remove (manager->priv->timeout);
manager->priv->timeout = 0;
}
while (manager->priv->monitors) {
g_file_monitor_cancel (G_FILE_MONITOR (manager->priv->monitors->data));
g_object_unref (manager->priv->monitors->data);
manager->priv->monitors = g_list_delete_link (manager->priv->monitors, manager->priv->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;
g_type_class_add_private (klass, sizeof (GsdSoundManagerPrivate));
}
static void
gsd_sound_manager_init (GsdSoundManager *manager)
{
manager->priv = GSD_SOUND_MANAGER_GET_PRIVATE (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->priv);
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);
}