2 * empathy-gst-audio-sink.c - Source for EmpathyGstAudioSink
3 * Copyright (C) 2008 Collabora Ltd.
4 * @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #include <gst/audio/audio.h>
26 #include <gst/interfaces/streamvolume.h>
28 #include <telepathy-glib/telepathy-glib.h>
30 #include <libempathy-gtk/empathy-call-utils.h>
32 #include "empathy-audio-sink.h"
34 #define DEBUG_FLAG EMPATHY_DEBUG_VOIP
35 #include <libempathy/empathy-debug.h>
37 G_DEFINE_TYPE(EmpathyGstAudioSink, empathy_audio_sink, GST_TYPE_BIN)
46 static guint signals[LAST_SIGNAL] = {0};
49 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE(
53 GST_STATIC_CAPS ( GST_AUDIO_INT_PAD_TEMPLATE_CAPS " ; "
54 GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS)
61 struct _EmpathyGstAudioSinkPrivate
67 GStaticMutex volume_mutex;
70 #define EMPATHY_GST_AUDIO_SINK_GET_PRIVATE(o) \
71 (G_TYPE_INSTANCE_GET_PRIVATE ((o), EMPATHY_TYPE_GST_AUDIO_SINK, \
72 EmpathyGstAudioSinkPrivate))
75 empathy_audio_sink_init (EmpathyGstAudioSink *self)
77 self->priv = EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (self);
78 self->priv->echo_cancel = TRUE;
79 g_static_mutex_init (&self->priv->volume_mutex);
82 static GstPad * empathy_audio_sink_request_new_pad (GstElement *self,
83 GstPadTemplate *templ,
86 static void empathy_audio_sink_release_pad (GstElement *self,
90 empathy_audio_sink_set_property (GObject *object,
91 guint property_id, const GValue *value, GParamSpec *pspec)
93 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (object);
97 g_static_mutex_lock (&self->priv->volume_mutex);
98 self->priv->volume = g_value_get_double (value);
99 g_static_mutex_unlock (&self->priv->volume_mutex);
102 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
107 empathy_audio_sink_get_property (GObject *object,
108 guint property_id, GValue *value, GParamSpec *pspec)
110 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (object);
114 g_value_set_double (value, self->priv->volume);
117 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
122 empathy_audio_sink_dispose (GObject *object)
124 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (object);
125 EmpathyGstAudioSinkPrivate *priv = self->priv;
127 if (priv->volume_idle_id != 0)
128 g_source_remove (priv->volume_idle_id);
129 priv->volume_idle_id = 0;
131 g_static_mutex_free (&self->priv->volume_mutex);
133 /* release any references held by the object here */
134 if (G_OBJECT_CLASS (empathy_audio_sink_parent_class)->dispose)
135 G_OBJECT_CLASS (empathy_audio_sink_parent_class)->dispose (object);
139 empathy_audio_sink_class_init (EmpathyGstAudioSinkClass
140 *empathy_audio_sink_class)
142 GObjectClass *object_class = G_OBJECT_CLASS (empathy_audio_sink_class);
143 GstElementClass *element_class =
144 GST_ELEMENT_CLASS (empathy_audio_sink_class);
145 GParamSpec *param_spec;
147 gst_element_class_add_pad_template (element_class,
148 gst_static_pad_template_get (&sink_template));
150 g_type_class_add_private (empathy_audio_sink_class,
151 sizeof (EmpathyGstAudioSinkPrivate));
153 object_class->set_property = empathy_audio_sink_set_property;
154 object_class->get_property = empathy_audio_sink_get_property;
155 object_class->dispose = empathy_audio_sink_dispose;
157 element_class->request_new_pad = empathy_audio_sink_request_new_pad;
158 element_class->release_pad = empathy_audio_sink_release_pad;
160 param_spec = g_param_spec_double ("volume", "Volume", "volume control",
162 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
163 g_object_class_install_property (object_class, PROP_VOLUME, param_spec);
167 empathy_audio_sink_new (void)
169 static gboolean registered = FALSE;
172 if (!gst_element_register (NULL, "empathyaudiosink",
173 GST_RANK_NONE, EMPATHY_TYPE_GST_AUDIO_SINK))
177 return gst_element_factory_make ("empathyaudiosink", NULL);
181 empathy_audio_sink_set_volume (EmpathyGstAudioSink *sink, gdouble volume)
183 g_object_set (sink, "volume", volume, NULL);
187 empathy_audio_sink_get_volume (EmpathyGstAudioSink *sink)
189 EmpathyGstAudioSinkPrivate *priv = EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (sink);
195 create_sink (EmpathyGstAudioSink *self)
198 const gchar *description;
200 description = g_getenv ("EMPATHY_AUDIO_SINK");
202 if (description != NULL)
204 GError *error = NULL;
206 sink = gst_parse_bin_from_description (description, TRUE, &error);
209 DEBUG ("Failed to create bin %s: %s", description, error->message);
210 g_error_free (error);
216 /* Use pulsesink as default */
217 sink = gst_element_factory_make ("pulsesink", NULL);
221 empathy_call_set_stream_properties (sink, self->priv->echo_cancel);
227 empathy_audio_sink_volume_idle_updated (gpointer user_data)
229 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (user_data);
231 g_static_mutex_lock (&self->priv->volume_mutex);
232 self->priv->volume_idle_id = 0;
233 g_static_mutex_unlock (&self->priv->volume_mutex);
235 g_object_notify (G_OBJECT (self), "volume");
241 empathy_audio_sink_volume_updated (GObject *object,
245 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (user_data);
248 g_static_mutex_lock (&self->priv->volume_mutex);
250 g_object_get (object, "volume", &volume, NULL);
251 if (self->priv->volume == volume)
254 self->priv->volume = volume;
255 if (self->priv->volume_idle_id == 0)
256 self->priv->volume_idle_id = g_idle_add (
257 empathy_audio_sink_volume_idle_updated, self);
260 g_static_mutex_unlock (&self->priv->volume_mutex);
264 empathy_audio_sink_request_new_pad (GstElement *element,
265 GstPadTemplate *templ,
268 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (element);
269 GstElement *bin, *resample, *audioconvert0, *audioconvert1;
271 GstPad *subpad, *filterpad;
273 bin = gst_bin_new (NULL);
275 audioconvert0 = gst_element_factory_make ("audioconvert", NULL);
276 if (audioconvert0 == NULL)
279 gst_bin_add (GST_BIN (bin), audioconvert0);
281 resample = gst_element_factory_make ("audioresample", NULL);
282 if (resample == NULL)
285 gst_bin_add (GST_BIN (bin), resample);
287 audioconvert1 = gst_element_factory_make ("audioconvert", NULL);
288 if (audioconvert1 == NULL)
291 gst_bin_add (GST_BIN (bin), audioconvert1);
293 self->priv->sink = create_sink (self);
294 if (self->priv->sink == NULL)
297 if (GST_IS_STREAM_VOLUME (self->priv->sink))
300 /* We can't do a bidirection bind as the ::notify comes from another
301 * thread, for other bits of empathy it's most simpler if it comes from
303 g_object_bind_property (self, "volume", self->priv->sink, "volume",
306 /* sync and callback for bouncing */
307 g_object_get (self->priv->sink, "volume", &volume, NULL);
308 g_object_set (self, "volume", volume, NULL);
309 g_signal_connect (self->priv->sink, "notify::volume",
310 G_CALLBACK (empathy_audio_sink_volume_updated), self);
314 gchar *n = gst_element_get_name (self->priv->sink);
316 DEBUG ("Element %s doesn't support volume", n);
320 gst_bin_add (GST_BIN (bin), self->priv->sink);
322 if (!gst_element_link_many (audioconvert0, resample, audioconvert1,
323 self->priv->sink, NULL))
326 filterpad = gst_element_get_static_pad (audioconvert0, "sink");
328 if (filterpad == NULL)
331 subpad = gst_ghost_pad_new ("sink", filterpad);
332 if (!gst_element_add_pad (GST_ELEMENT (bin), subpad))
335 gst_bin_add (GST_BIN (self), bin);
337 pad = gst_ghost_pad_new (name, subpad);
338 g_assert (pad != NULL);
340 if (!gst_element_sync_state_with_parent (bin))
343 if (!gst_pad_set_active (pad, TRUE))
346 if (!gst_element_add_pad (GST_ELEMENT (self), pad))
354 gst_object_unref (pad);
357 gst_object_unref (bin);
358 g_warning ("Failed to create output subpipeline");
363 empathy_audio_sink_release_pad (GstElement *element,
366 gst_pad_set_active (pad, FALSE);
367 gst_element_remove_pad (element, pad);
371 empathy_audio_sink_set_echo_cancel (EmpathyGstAudioSink *sink,
372 gboolean echo_cancel)
374 DEBUG ("Sink echo cancellation setting: %s", echo_cancel ? "on" : "off");
375 sink->priv->echo_cancel = echo_cancel;
376 if (sink->priv->sink != NULL)
377 empathy_call_set_stream_properties (sink->priv->sink,
378 sink->priv->echo_cancel);