gstreamer/ext/gconf/gstgconfaudiosink.c
2010-06-09 20:30:31 +02:00

310 lines
8.7 KiB
C

/* GStreamer
* (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* (c) 2006 Jürg Billeter <j@bitron.ch>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-gconfaudiosink
*
* This element outputs sound to the audiosink that has been configured in
* GConf by the user.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch filesrc location=foo.ogg ! decodebin ! audioconvert ! audioresample ! gconfaudiosink
* ]| Play on configured audiosink
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstgconfelements.h"
#include "gstgconfaudiosink.h"
static void gst_gconf_audio_sink_dispose (GObject * object);
static void gst_gconf_audio_sink_finalize (GstGConfAudioSink * sink);
static void cb_change_child (GConfClient * client,
guint connection_id, GConfEntry * entry, gpointer data);
static GstStateChangeReturn
gst_gconf_audio_sink_change_state (GstElement * element,
GstStateChange transition);
static void gst_gconf_switch_profile (GstGConfAudioSink * sink,
GstGConfProfile profile);
enum
{
PROP_0,
PROP_PROFILE
};
GST_BOILERPLATE (GstGConfAudioSink, gst_gconf_audio_sink, GstSwitchSink,
GST_TYPE_SWITCH_SINK);
static void gst_gconf_audio_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_gconf_audio_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void
gst_gconf_audio_sink_base_init (gpointer klass)
{
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
gst_element_class_set_details_simple (eklass, "GConf audio sink",
"Sink/Audio",
"Audio sink embedding the GConf-settings for audio output",
"Jan Schmidt <thaytan@mad.scientist.com>");
}
#define GST_TYPE_GCONF_PROFILE (gst_gconf_profile_get_type())
static GType
gst_gconf_profile_get_type (void)
{
static GType gconf_profile_type = 0;
static const GEnumValue gconf_profiles[] = {
{GCONF_PROFILE_SOUNDS, "Sound Events", "sounds"},
{GCONF_PROFILE_MUSIC, "Music and Movies", "music"},
{GCONF_PROFILE_CHAT, "Audio/Video Conferencing", "chat"},
{0, NULL, NULL}
};
if (!gconf_profile_type) {
gconf_profile_type =
g_enum_register_static ("GstGConfProfile", gconf_profiles);
}
return gconf_profile_type;
}
static void
gst_gconf_audio_sink_class_init (GstGConfAudioSinkClass * klass)
{
GObjectClass *oklass = G_OBJECT_CLASS (klass);
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
oklass->set_property = gst_gconf_audio_sink_set_property;
oklass->get_property = gst_gconf_audio_sink_get_property;
oklass->dispose = gst_gconf_audio_sink_dispose;
oklass->finalize = (GObjectFinalizeFunc) gst_gconf_audio_sink_finalize;
eklass->change_state = gst_gconf_audio_sink_change_state;
g_object_class_install_property (oklass, PROP_PROFILE,
g_param_spec_enum ("profile", "Profile", "Profile",
GST_TYPE_GCONF_PROFILE, GCONF_PROFILE_SOUNDS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_gconf_audio_sink_reset (GstGConfAudioSink * sink)
{
gst_switch_sink_set_child (GST_SWITCH_SINK (sink), NULL);
g_free (sink->gconf_str);
sink->gconf_str = NULL;
}
static void
gst_gconf_audio_sink_init (GstGConfAudioSink * sink,
GstGConfAudioSinkClass * g_class)
{
gst_gconf_audio_sink_reset (sink);
sink->client = gconf_client_get_default ();
gconf_client_add_dir (sink->client, GST_GCONF_DIR "/default",
GCONF_CLIENT_PRELOAD_RECURSIVE, NULL);
gst_gconf_switch_profile (sink, GCONF_PROFILE_SOUNDS);
}
static void
gst_gconf_audio_sink_dispose (GObject * object)
{
GstGConfAudioSink *sink = GST_GCONF_AUDIO_SINK (object);
if (sink->client) {
gst_gconf_switch_profile (sink, GCONF_PROFILE_NONE);
g_object_unref (G_OBJECT (sink->client));
sink->client = NULL;
}
GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
}
static void
gst_gconf_audio_sink_finalize (GstGConfAudioSink * sink)
{
g_free (sink->gconf_str);
GST_CALL_PARENT (G_OBJECT_CLASS, finalize, ((GObject *) (sink)));
}
static gboolean
do_change_child (GstGConfAudioSink * sink)
{
const gchar *key;
gchar *new_gconf_str;
GstElement *new_kid;
if (sink->profile == GCONF_PROFILE_NONE)
return FALSE; /* Can't switch to a 'NONE' sink */
key = gst_gconf_get_key_for_sink_profile (sink->profile);
new_gconf_str = gst_gconf_get_string (key);
GST_LOG_OBJECT (sink, "old gconf string: %s", GST_STR_NULL (sink->gconf_str));
GST_LOG_OBJECT (sink, "new gconf string: %s", GST_STR_NULL (new_gconf_str));
if (new_gconf_str != NULL && sink->gconf_str != NULL &&
(strlen (new_gconf_str) == 0 ||
strcmp (sink->gconf_str, new_gconf_str) == 0)) {
g_free (new_gconf_str);
GST_DEBUG_OBJECT (sink,
"GConf key was updated, but it didn't change. Ignoring");
return TRUE;
}
GST_DEBUG_OBJECT (sink, "GConf key changed: '%s' to '%s'",
GST_STR_NULL (sink->gconf_str), GST_STR_NULL (new_gconf_str));
GST_DEBUG_OBJECT (sink, "Creating new child for profile %d", sink->profile);
new_kid =
gst_gconf_render_bin_with_default (new_gconf_str, DEFAULT_AUDIOSINK);
if (new_kid == NULL) {
GST_ELEMENT_ERROR (sink, LIBRARY, SETTINGS, (NULL),
("Failed to render audio sink from GConf"));
goto fail;
}
if (!gst_switch_sink_set_child (GST_SWITCH_SINK (sink), new_kid)) {
GST_WARNING_OBJECT (sink, "Failed to update child element");
goto fail;
}
g_free (sink->gconf_str);
sink->gconf_str = new_gconf_str;
GST_DEBUG_OBJECT (sink, "done changing gconf audio sink");
return TRUE;
fail:
g_free (new_gconf_str);
return FALSE;
}
static void
gst_gconf_switch_profile (GstGConfAudioSink * sink, GstGConfProfile profile)
{
if (sink->client == NULL)
return;
if (sink->notify_id) {
GST_DEBUG_OBJECT (sink, "Unsubscribing old key %s for profile %d",
gst_gconf_get_key_for_sink_profile (sink->profile), sink->profile);
gconf_client_notify_remove (sink->client, sink->notify_id);
sink->notify_id = 0;
}
sink->profile = profile;
if (profile != GCONF_PROFILE_NONE) {
const gchar *key = gst_gconf_get_key_for_sink_profile (sink->profile);
GST_DEBUG_OBJECT (sink, "Subscribing to key %s for profile %d",
key, profile);
sink->notify_id = gconf_client_notify_add (sink->client, key,
cb_change_child, sink, NULL, NULL);
}
}
static void
gst_gconf_audio_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGConfAudioSink *sink;
sink = GST_GCONF_AUDIO_SINK (object);
switch (prop_id) {
case PROP_PROFILE:
gst_gconf_switch_profile (sink, g_value_get_enum (value));
break;
default:
break;
}
}
static void
gst_gconf_audio_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGConfAudioSink *sink;
sink = GST_GCONF_AUDIO_SINK (object);
switch (prop_id) {
case PROP_PROFILE:
g_value_set_enum (value, sink->profile);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
cb_change_child (GConfClient * client,
guint connection_id, GConfEntry * entry, gpointer data)
{
do_change_child (GST_GCONF_AUDIO_SINK (data));
}
static GstStateChangeReturn
gst_gconf_audio_sink_change_state (GstElement * element,
GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstGConfAudioSink *sink = GST_GCONF_AUDIO_SINK (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!do_change_child (sink)) {
gst_gconf_audio_sink_reset (sink);
return GST_STATE_CHANGE_FAILURE;
}
break;
default:
break;
}
ret = GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state,
(element, transition), GST_STATE_CHANGE_SUCCESS);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
gst_gconf_audio_sink_reset (sink);
break;
default:
break;
}
return ret;
}