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/*
* empathy-gst-audio-sink.c - Source for EmpathyGstAudioSink
* Copyright (C) 2008 Collabora Ltd.
* @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <gst/farsight/fs-element-added-notifier.h>
#include "empathy-audio-sink.h"
G_DEFINE_TYPE(EmpathyGstAudioSink, empathy_audio_sink, GST_TYPE_BIN)
/* signal enum */
#if 0
enum
{
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = {0};
#endif
enum {
PROP_VOLUME = 1,
};
/* private structure */
typedef struct _EmpathyGstAudioSinkPrivate EmpathyGstAudioSinkPrivate;
struct _EmpathyGstAudioSinkPrivate
{
gboolean dispose_has_run;
GstElement *sink;
GstElement *volume;
FsElementAddedNotifier *notifier;
};
#define EMPATHY_GST_AUDIO_SINK_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE ((o), EMPATHY_TYPE_GST_AUDIO_SINK, \
EmpathyGstAudioSinkPrivate))
static void
empathy_audio_sink_element_added_cb (FsElementAddedNotifier *notifier,
GstBin *bin, GstElement *element, EmpathyGstAudioSink *self)
{
EmpathyGstAudioSinkPrivate *priv = EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (self);
if (g_object_class_find_property (G_OBJECT_GET_CLASS (element), "volume"))
{
gdouble volume;
volume = empathy_audio_sink_get_volume (self);
empathy_audio_sink_set_volume (self, 1.0);
if (priv->volume != NULL)
g_object_unref (priv->volume);
priv->volume = g_object_ref (element);
if (volume != 1.0)
empathy_audio_sink_set_volume (self, volume);
}
}
static void
empathy_audio_sink_init (EmpathyGstAudioSink *obj)
{
EmpathyGstAudioSinkPrivate *priv = EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (obj);
GstElement *resample;
GstPad *ghost, *sink;
priv->notifier = fs_element_added_notifier_new ();
g_signal_connect (priv->notifier, "element-added",
G_CALLBACK (empathy_audio_sink_element_added_cb), obj);
resample = gst_element_factory_make ("audioresample", NULL);
priv->volume = gst_element_factory_make ("volume", NULL);
g_object_ref (priv->volume);
priv->sink = gst_element_factory_make ("gconfaudiosink", NULL);
fs_element_added_notifier_add (priv->notifier, GST_BIN (priv->sink));
gst_bin_add_many (GST_BIN (obj), resample, priv->volume, priv->sink, NULL);
gst_element_link_many (resample, priv->volume, priv->sink, NULL);
sink = gst_element_get_static_pad (resample, "sink");
ghost = gst_ghost_pad_new ("sink", sink);
gst_element_add_pad (GST_ELEMENT (obj), ghost);
gst_object_unref (G_OBJECT (sink));
}
static void empathy_audio_sink_dispose (GObject *object);
static void empathy_audio_sink_finalize (GObject *object);
static void
empathy_audio_sink_set_property (GObject *object,
guint property_id, const GValue *value, GParamSpec *pspec)
{
switch (property_id)
{
case PROP_VOLUME:
empathy_audio_sink_set_volume (EMPATHY_GST_AUDIO_SINK (object),
g_value_get_double (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
empathy_audio_sink_get_property (GObject *object,
guint property_id, GValue *value, GParamSpec *pspec)
{
switch (property_id)
{
case PROP_VOLUME:
g_value_set_double (value,
empathy_audio_sink_get_volume (EMPATHY_GST_AUDIO_SINK (object)));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
empathy_audio_sink_class_init (EmpathyGstAudioSinkClass
*empathy_audio_sink_class)
{
GObjectClass *object_class = G_OBJECT_CLASS (empathy_audio_sink_class);
GParamSpec *param_spec;
g_type_class_add_private (empathy_audio_sink_class,
sizeof (EmpathyGstAudioSinkPrivate));
object_class->dispose = empathy_audio_sink_dispose;
object_class->finalize = empathy_audio_sink_finalize;
object_class->set_property = empathy_audio_sink_set_property;
object_class->get_property = empathy_audio_sink_get_property;
param_spec = g_param_spec_double ("volume", "Volume", "volume control",
0.0, 5.0, 1.0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (object_class, PROP_VOLUME, param_spec);
}
void
empathy_audio_sink_dispose (GObject *object)
{
EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (object);
EmpathyGstAudioSinkPrivate *priv = EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (self);
if (priv->dispose_has_run)
return;
priv->dispose_has_run = TRUE;
if (priv->notifier != NULL)
g_object_unref (priv->notifier);
priv->notifier = NULL;
if (priv->volume != NULL)
g_object_unref (priv->volume);
priv->volume = NULL;
if (G_OBJECT_CLASS (empathy_audio_sink_parent_class)->dispose)
G_OBJECT_CLASS (empathy_audio_sink_parent_class)->dispose (object);
}
void
empathy_audio_sink_finalize (GObject *object)
{
//EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (object);
//EmpathyGstAudioSinkPrivate *priv =
// EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (self);
/* free any data held directly by the object here */
G_OBJECT_CLASS (empathy_audio_sink_parent_class)->finalize (object);
}
GstElement *
empathy_audio_sink_new (void)
{
static gboolean registered = FALSE;
if (!registered) {
if (!gst_element_register (NULL, "empathyaudiosink",
GST_RANK_NONE, EMPATHY_TYPE_GST_AUDIO_SINK))
return NULL;
registered = TRUE;
}
return gst_element_factory_make ("empathyaudiosink", NULL);
}
void
empathy_audio_sink_set_volume (EmpathyGstAudioSink *sink, gdouble volume)
{
EmpathyGstAudioSinkPrivate *priv = EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (sink);
g_object_set (G_OBJECT (priv->volume), "volume", volume, NULL);
}
gdouble
empathy_audio_sink_get_volume (EmpathyGstAudioSink *sink)
{
EmpathyGstAudioSinkPrivate *priv = EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (sink);
gdouble volume;
g_object_get (G_OBJECT (priv->volume), "volume", &volume, NULL);
return volume;
}
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