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
22 #include "empathy-audio-sink.h"
25 #include <gst/audio/streamvolume.h>
27 #include <gst/audio/audio.h>
28 #include <gst/interfaces/streamvolume.h>
31 #include "empathy-audio-utils.h"
33 #define DEBUG_FLAG EMPATHY_DEBUG_VOIP
34 #include "empathy-debug.h"
36 G_DEFINE_TYPE(EmpathyGstAudioSink, empathy_audio_sink, GST_TYPE_BIN)
45 static guint signals[LAST_SIGNAL] = {0};
48 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE(
53 GST_STATIC_CAPS ( "audio/x-raw" )
55 GST_STATIC_CAPS ( GST_AUDIO_INT_PAD_TEMPLATE_CAPS " ; "
56 GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS)
64 struct _EmpathyGstAudioSinkPrivate
73 #define EMPATHY_GST_AUDIO_SINK_GET_PRIVATE(o) \
74 (G_TYPE_INSTANCE_GET_PRIVATE ((o), EMPATHY_TYPE_GST_AUDIO_SINK, \
75 EmpathyGstAudioSinkPrivate))
78 empathy_audio_sink_init (EmpathyGstAudioSink *self)
80 self->priv = EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (self);
81 self->priv->echo_cancel = TRUE;
82 g_mutex_init (&self->priv->volume_mutex);
86 static GstPad * empathy_audio_sink_request_new_pad (GstElement *self,
87 GstPadTemplate *templ,
91 static GstPad * empathy_audio_sink_request_new_pad (GstElement *self,
92 GstPadTemplate *templ,
96 static void empathy_audio_sink_release_pad (GstElement *self,
100 empathy_audio_sink_set_property (GObject *object,
101 guint property_id, const GValue *value, GParamSpec *pspec)
103 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (object);
107 g_mutex_lock (&self->priv->volume_mutex);
108 self->priv->volume = g_value_get_double (value);
109 g_mutex_unlock (&self->priv->volume_mutex);
112 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
117 empathy_audio_sink_get_property (GObject *object,
118 guint property_id, GValue *value, GParamSpec *pspec)
120 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (object);
124 g_value_set_double (value, self->priv->volume);
127 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
132 empathy_audio_sink_dispose (GObject *object)
134 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (object);
135 EmpathyGstAudioSinkPrivate *priv = self->priv;
137 if (priv->volume_idle_id != 0)
138 g_source_remove (priv->volume_idle_id);
139 priv->volume_idle_id = 0;
141 g_mutex_clear (&self->priv->volume_mutex);
143 /* release any references held by the object here */
144 if (G_OBJECT_CLASS (empathy_audio_sink_parent_class)->dispose)
145 G_OBJECT_CLASS (empathy_audio_sink_parent_class)->dispose (object);
149 empathy_audio_sink_class_init (EmpathyGstAudioSinkClass
150 *empathy_audio_sink_class)
152 GObjectClass *object_class = G_OBJECT_CLASS (empathy_audio_sink_class);
153 GstElementClass *element_class =
154 GST_ELEMENT_CLASS (empathy_audio_sink_class);
155 GParamSpec *param_spec;
157 gst_element_class_add_pad_template (element_class,
158 gst_static_pad_template_get (&sink_template));
160 g_type_class_add_private (empathy_audio_sink_class,
161 sizeof (EmpathyGstAudioSinkPrivate));
163 object_class->set_property = empathy_audio_sink_set_property;
164 object_class->get_property = empathy_audio_sink_get_property;
165 object_class->dispose = empathy_audio_sink_dispose;
167 element_class->request_new_pad = empathy_audio_sink_request_new_pad;
168 element_class->release_pad = empathy_audio_sink_release_pad;
170 param_spec = g_param_spec_double ("volume", "Volume", "volume control",
172 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
173 g_object_class_install_property (object_class, PROP_VOLUME, param_spec);
177 empathy_audio_sink_new (void)
179 static gboolean registered = FALSE;
182 if (!gst_element_register (NULL, "empathyaudiosink",
183 GST_RANK_NONE, EMPATHY_TYPE_GST_AUDIO_SINK))
187 return gst_element_factory_make ("empathyaudiosink", NULL);
191 empathy_audio_sink_set_volume (EmpathyGstAudioSink *sink, gdouble volume)
193 g_object_set (sink, "volume", volume, NULL);
197 empathy_audio_sink_get_volume (EmpathyGstAudioSink *sink)
199 EmpathyGstAudioSinkPrivate *priv = EMPATHY_GST_AUDIO_SINK_GET_PRIVATE (sink);
205 create_sink (EmpathyGstAudioSink *self)
208 const gchar *description;
210 description = g_getenv ("EMPATHY_AUDIO_SINK");
212 if (description != NULL)
214 GError *error = NULL;
216 sink = gst_parse_bin_from_description (description, TRUE, &error);
219 DEBUG ("Failed to create bin %s: %s", description, error->message);
220 g_error_free (error);
226 /* Use pulsesink as default */
227 sink = gst_element_factory_make ("pulsesink", NULL);
231 empathy_audio_set_stream_properties (sink, self->priv->echo_cancel);
233 /* Set latency (buffering on the PulseAudio side) of 40ms and transfer data
236 "buffer-time", (gint64) 40000,
237 "latency-time", (gint64) 10000,
244 empathy_audio_sink_volume_idle_updated (gpointer user_data)
246 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (user_data);
248 g_mutex_lock (&self->priv->volume_mutex);
249 self->priv->volume_idle_id = 0;
250 g_mutex_unlock (&self->priv->volume_mutex);
252 g_object_notify (G_OBJECT (self), "volume");
258 empathy_audio_sink_volume_updated (GObject *object,
262 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (user_data);
265 g_mutex_lock (&self->priv->volume_mutex);
267 g_object_get (object, "volume", &volume, NULL);
268 if (self->priv->volume == volume)
271 self->priv->volume = volume;
272 if (self->priv->volume_idle_id == 0)
273 self->priv->volume_idle_id = g_idle_add (
274 empathy_audio_sink_volume_idle_updated, self);
277 g_mutex_unlock (&self->priv->volume_mutex);
281 empathy_audio_sink_volume_idle_setup (gpointer user_data)
283 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (user_data);
286 g_mutex_lock (&self->priv->volume_mutex);
287 self->priv->volume_idle_id = 0;
288 g_mutex_unlock (&self->priv->volume_mutex);
290 /* We can't do a bidirection bind as the ::notify comes from another
291 * thread, for other bits of empathy it's most simpler if it comes from
293 g_object_bind_property (self, "volume", self->priv->sink, "volume",
296 /* sync and callback for bouncing */
297 g_object_get (self->priv->sink, "volume", &volume, NULL);
298 g_object_set (self, "volume", volume, NULL);
299 g_signal_connect (self->priv->sink, "notify::volume",
300 G_CALLBACK (empathy_audio_sink_volume_updated), self);
307 empathy_audio_sink_request_new_pad (GstElement *element,
308 GstPadTemplate *templ,
313 empathy_audio_sink_request_new_pad (GstElement *element,
314 GstPadTemplate *templ,
318 EmpathyGstAudioSink *self = EMPATHY_GST_AUDIO_SINK (element);
319 GstElement *bin, *resample, *audioconvert0, *audioconvert1;
321 GstPad *subpad, *filterpad;
323 bin = gst_bin_new (NULL);
325 audioconvert0 = gst_element_factory_make ("audioconvert", NULL);
326 if (audioconvert0 == NULL)
329 gst_bin_add (GST_BIN (bin), audioconvert0);
331 resample = gst_element_factory_make ("audioresample", NULL);
332 if (resample == NULL)
335 gst_bin_add (GST_BIN (bin), resample);
337 audioconvert1 = gst_element_factory_make ("audioconvert", NULL);
338 if (audioconvert1 == NULL)
341 gst_bin_add (GST_BIN (bin), audioconvert1);
343 self->priv->sink = create_sink (self);
344 if (self->priv->sink == NULL)
347 if (GST_IS_STREAM_VOLUME (self->priv->sink))
349 g_mutex_lock (&self->priv->volume_mutex);
350 if (self->priv->volume_idle_id == 0)
351 self->priv->volume_idle_id = g_idle_add (
352 empathy_audio_sink_volume_idle_setup, self);
353 g_mutex_unlock (&self->priv->volume_mutex);
357 gchar *n = gst_element_get_name (self->priv->sink);
359 DEBUG ("Element %s doesn't support volume", n);
363 gst_bin_add (GST_BIN (bin), self->priv->sink);
365 if (!gst_element_link_many (audioconvert0, resample, audioconvert1,
366 self->priv->sink, NULL))
369 filterpad = gst_element_get_static_pad (audioconvert0, "sink");
371 if (filterpad == NULL)
374 subpad = gst_ghost_pad_new ("sink", filterpad);
375 gst_object_unref (filterpad);
377 if (!gst_element_add_pad (GST_ELEMENT (bin), subpad))
380 gst_bin_add (GST_BIN (self), bin);
382 pad = gst_ghost_pad_new (name, subpad);
383 g_assert (pad != NULL);
385 if (!gst_element_sync_state_with_parent (bin))
388 if (!gst_pad_set_active (pad, TRUE))
391 if (!gst_element_add_pad (GST_ELEMENT (self), pad))
399 gst_object_unref (pad);
402 gst_object_unref (bin);
403 g_warning ("Failed to create output subpipeline");
408 empathy_audio_sink_release_pad (GstElement *element,
411 gst_pad_set_active (pad, FALSE);
412 gst_element_remove_pad (element, pad);
416 empathy_audio_sink_set_echo_cancel (EmpathyGstAudioSink *sink,
417 gboolean echo_cancel)
419 DEBUG ("Sink echo cancellation setting: %s", echo_cancel ? "on" : "off");
420 sink->priv->echo_cancel = echo_cancel;
421 if (sink->priv->sink != NULL)
422 empathy_audio_set_stream_properties (sink->priv->sink,
423 sink->priv->echo_cancel);