2 * empathy-gst-audio-src.c - Source for EmpathyGstAudioSrc
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
26 #include <gst/interfaces/streamvolume.h>
28 #include <libempathy/empathy-utils.h>
29 #include "empathy-audio-utils.h"
31 #include "empathy-audio-src.h"
33 #include "empathy-mic-monitor.h"
35 #define DEBUG_FLAG EMPATHY_DEBUG_VOIP
36 #include <libempathy/empathy-debug.h>
38 G_DEFINE_TYPE(EmpathyGstAudioSrc, empathy_audio_src, GST_TYPE_BIN)
46 /* private structure */
47 struct _EmpathyGstAudioSrcPrivate
49 gboolean dispose_has_run;
51 GstElement *volume_element;
53 EmpathyMicMonitor *mic_monitor;
55 /* 0 if not known yet */
56 guint source_output_idx;
57 /* G_MAXUINT if not known yet */
62 gboolean have_stream_volume;
68 #define EMPATHY_GST_AUDIO_SRC_GET_PRIVATE(o) \
69 (G_TYPE_INSTANCE_GET_PRIVATE ((o), EMPATHY_TYPE_GST_AUDIO_SRC, \
70 EmpathyGstAudioSrcPrivate))
74 empathy_audio_src_volume_changed (GObject *object,
79 empathy_audio_set_hw_mute (EmpathyGstAudioSrc *self, gboolean mute)
81 if (mute == self->priv->mute)
84 if (self->priv->have_stream_volume)
85 g_object_set (self->priv->src, "mute", mute, NULL);
87 /* Belt and braces: If for some reason the underlying src doesn't mute
88 * correctly or doesn't update us when it unmutes correctly enforce it using
89 * our own volume element. Our UI can in no circumstances be made to think
90 * the input is muted while it's not */
91 g_object_set (self->priv->volume_element, "mute", mute, NULL);
93 self->priv->mute = mute;
97 empathy_audio_src_get_hw_mute (EmpathyGstAudioSrc *self)
100 g_object_get (self->priv->src, "mute", &result, NULL);
106 empathy_audio_src_set_hw_volume (EmpathyGstAudioSrc *self,
109 if (volume == self->priv->volume)
112 if (self->priv->have_stream_volume)
113 g_object_set (self->priv->src, "volume", volume, NULL);
114 self->priv->volume = volume;
118 empathy_audio_src_get_hw_volume (EmpathyGstAudioSrc *self)
121 g_object_get (self->priv->src, "volume", &result, NULL);
128 empathy_audio_src_supports_changing_mic (EmpathyGstAudioSrc *self)
130 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
131 GObjectClass *object_class;
133 object_class = G_OBJECT_GET_CLASS (priv->src);
135 return (g_object_class_find_property (object_class,
136 "source-output-index") != NULL);
140 empathy_audio_src_get_mic_index (EmpathyGstAudioSrc *self)
142 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
143 guint audio_src_idx = PA_INVALID_INDEX;
145 if (empathy_audio_src_supports_changing_mic (self))
146 g_object_get (priv->src,
147 "source-output-index", &audio_src_idx,
150 return audio_src_idx;
154 empathy_audio_src_microphone_changed_cb (EmpathyMicMonitor *monitor,
155 guint source_output_idx,
159 EmpathyGstAudioSrc *self = user_data;
160 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
163 audio_src_idx = empathy_audio_src_get_mic_index (self);
165 if (source_output_idx == PA_INVALID_INDEX
166 || source_output_idx != audio_src_idx)
169 if (priv->source_idx == source_idx)
172 priv->source_idx = source_idx;
173 g_object_notify (G_OBJECT (self), "microphone");
177 empathy_audio_src_get_current_mic_cb (GObject *source_object,
178 GAsyncResult *result,
181 EmpathyMicMonitor *monitor = EMPATHY_MIC_MONITOR (source_object);
182 EmpathyGstAudioSrc *self = user_data;
183 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
185 GError *error = NULL;
187 source_idx = empathy_mic_monitor_get_current_mic_finish (monitor, result, &error);
191 DEBUG ("Failed to get current mic: %s", error->message);
192 g_clear_error (&error);
196 if (priv->source_idx == source_idx)
199 priv->source_idx = source_idx;
200 g_object_notify (G_OBJECT (self), "microphone");
204 empathy_audio_src_source_output_index_notify (GObject *object,
206 EmpathyGstAudioSrc *self)
208 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
209 guint source_output_idx;
211 source_output_idx = empathy_audio_src_get_mic_index (self);
213 if (source_output_idx == PA_INVALID_INDEX)
216 if (priv->source_output_idx == source_output_idx)
219 /* It's actually changed. */
220 priv->source_output_idx = source_output_idx;
222 empathy_mic_monitor_get_current_mic_async (priv->mic_monitor,
223 source_output_idx, empathy_audio_src_get_current_mic_cb, self);
230 const gchar *description;
232 description = g_getenv ("EMPATHY_AUDIO_SRC");
234 if (description != NULL)
236 GError *error = NULL;
238 src = gst_parse_bin_from_description (description, TRUE, &error);
241 DEBUG ("Failed to create bin %s: %s", description, error->message);
242 g_error_free (error);
248 /* Use pulsesrc as default */
249 src = gst_element_factory_make ("pulsesrc", NULL);
253 empathy_audio_set_stream_properties (src, TRUE);
255 /* Set latency (buffering on the PulseAudio side) of 20ms */
256 g_object_set (src, "buffer-time", (gint64) 20000, NULL);
262 empathy_audio_src_init (EmpathyGstAudioSrc *obj)
264 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (obj);
266 GstElement *capsfilter;
270 g_mutex_init (&priv->lock);
274 priv->src = create_src ();
275 if (priv->src == NULL)
278 if (GST_IS_STREAM_VOLUME (priv->src))
283 priv->have_stream_volume = TRUE;
284 /* We can't do a bidirection bind as the ::notify comes from another
285 * thread, for other bits of empathy it's most simpler if it comes from
287 g_object_bind_property (obj, "volume", priv->src, "volume",
289 g_object_bind_property (obj, "mute", priv->src, "mute",
292 /* sync and callback for bouncing */
293 g_object_get (priv->src, "volume", &volume, NULL);
294 g_object_set (obj, "volume", volume, NULL);
296 g_object_get (priv->src, "mute", &mute, NULL);
297 g_object_set (obj, "mute", mute, NULL);
299 g_signal_connect (priv->src, "notify::volume",
300 G_CALLBACK (empathy_audio_src_volume_changed), obj);
301 g_signal_connect (priv->src, "notify::mute",
302 G_CALLBACK (empathy_audio_src_volume_changed), obj);
306 g_message ("No stream volume available :(, mute will work though");
307 priv->have_stream_volume = FALSE;
310 gst_bin_add (GST_BIN (obj), priv->src);
312 /* Explicitly state what format we want from pulsesrc. This pushes resampling
313 * and format conversion as early as possible, lowering the amount of data
314 * transferred and thus improving performance. When moving to GStreamer
315 * 0.11/1.0, this should change so that we actually request what the encoder
316 * wants downstream. */
317 caps = gst_caps_new_simple ("audio/x-raw-int",
318 "channels", G_TYPE_INT, 1,
319 "width", G_TYPE_INT, 16,
320 "depth", G_TYPE_INT, 16,
321 "rate", G_TYPE_INT, 32000,
323 capsfilter = gst_element_factory_make ("capsfilter", NULL);
324 g_object_set (G_OBJECT (capsfilter), "caps", caps, NULL);
325 gst_bin_add (GST_BIN (obj), capsfilter);
326 gst_element_link (priv->src, capsfilter);
328 priv->volume_element = gst_element_factory_make ("volume", NULL);
329 gst_bin_add (GST_BIN (obj), priv->volume_element);
330 gst_element_link (priv->src, priv->volume_element);
332 src = gst_element_get_static_pad (priv->volume_element, "src");
334 ghost = gst_ghost_pad_new ("src", src);
335 gst_element_add_pad (GST_ELEMENT (obj), ghost);
337 gst_object_unref (G_OBJECT (src));
339 /* Listen to changes to GstPulseSrc:source-output-index so we know when
340 * it's no longer PA_INVALID_INDEX (starting for the first time) or if it
341 * changes (READY->NULL->READY...) */
342 g_signal_connect (priv->src, "notify::source-output-index",
343 G_CALLBACK (empathy_audio_src_source_output_index_notify),
346 priv->mic_monitor = empathy_mic_monitor_new ();
347 g_signal_connect (priv->mic_monitor, "microphone-changed",
348 G_CALLBACK (empathy_audio_src_microphone_changed_cb), obj);
350 priv->source_idx = PA_INVALID_INDEX;
353 static void empathy_audio_src_dispose (GObject *object);
354 static void empathy_audio_src_finalize (GObject *object);
357 empathy_audio_src_set_property (GObject *object,
358 guint property_id, const GValue *value, GParamSpec *pspec)
363 empathy_audio_src_set_hw_volume (EMPATHY_GST_AUDIO_SRC (object),
364 g_value_get_double (value));
367 empathy_audio_set_hw_mute (EMPATHY_GST_AUDIO_SRC (object),
368 g_value_get_boolean (value));
371 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
376 empathy_audio_src_get_property (GObject *object,
377 guint property_id, GValue *value, GParamSpec *pspec)
379 EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (object);
380 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
385 g_value_set_double (value, priv->volume);
388 g_value_set_boolean (value, priv->mute);
390 case PROP_MICROPHONE:
391 g_value_set_uint (value, priv->source_idx);
394 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
399 empathy_audio_src_class_init (EmpathyGstAudioSrcClass
400 *empathy_audio_src_class)
402 GObjectClass *object_class = G_OBJECT_CLASS (empathy_audio_src_class);
403 GParamSpec *param_spec;
405 g_type_class_add_private (empathy_audio_src_class,
406 sizeof (EmpathyGstAudioSrcPrivate));
408 object_class->dispose = empathy_audio_src_dispose;
409 object_class->finalize = empathy_audio_src_finalize;
411 object_class->set_property = empathy_audio_src_set_property;
412 object_class->get_property = empathy_audio_src_get_property;
414 param_spec = g_param_spec_double ("volume", "Volume", "volume contol",
416 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
417 g_object_class_install_property (object_class, PROP_VOLUME, param_spec);
419 param_spec = g_param_spec_boolean ("mute", "Mute", "mute contol",
421 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
422 g_object_class_install_property (object_class, PROP_MUTE, param_spec);
424 param_spec = g_param_spec_uint ("microphone", "microphone", "microphone",
425 0, G_MAXUINT, G_MAXUINT,
426 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
427 g_object_class_install_property (object_class, PROP_MICROPHONE, param_spec);
431 empathy_audio_src_dispose (GObject *object)
433 EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (object);
434 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
436 if (priv->dispose_has_run)
439 priv->dispose_has_run = TRUE;
441 if (priv->volume_idle_id != 0)
442 g_source_remove (priv->volume_idle_id);
443 priv->volume_idle_id = 0;
445 tp_clear_object (&priv->mic_monitor);
447 /* release any references held by the object here */
449 if (G_OBJECT_CLASS (empathy_audio_src_parent_class)->dispose)
450 G_OBJECT_CLASS (empathy_audio_src_parent_class)->dispose (object);
454 empathy_audio_src_finalize (GObject *object)
456 EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (object);
457 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
459 /* free any data held directly by the object here */
460 g_mutex_clear (&priv->lock);
462 G_OBJECT_CLASS (empathy_audio_src_parent_class)->finalize (object);
466 empathy_audio_src_volume_changed_idle (gpointer user_data)
468 EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (user_data);
469 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
473 g_mutex_lock (&priv->lock);
474 priv->volume_idle_id = 0;
475 g_mutex_unlock (&priv->lock);
477 volume = empathy_audio_src_get_hw_volume (self);
479 if (volume != priv->volume)
481 priv->volume = volume;
482 g_object_notify (G_OBJECT (self), "volume");
485 mute = empathy_audio_src_get_hw_mute (self);
486 if (mute != priv->mute)
489 /* hw mute changed, follow with own volume */
490 g_object_set (self->priv->volume_element, "mute", mute, NULL);
491 g_object_notify (G_OBJECT (self), "mute");
498 empathy_audio_src_volume_changed (GObject *object,
502 EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (user_data);
504 g_mutex_lock (&self->priv->lock);
505 if (self->priv->volume_idle_id == 0)
506 self->priv->volume_idle_id = g_idle_add (
507 empathy_audio_src_volume_changed_idle, self);
508 g_mutex_unlock (&self->priv->lock);
514 empathy_audio_src_new (void)
516 static gboolean registered = FALSE;
519 if (!gst_element_register (NULL, "empathyaudiosrc",
520 GST_RANK_NONE, EMPATHY_TYPE_GST_AUDIO_SRC))
524 return gst_element_factory_make ("empathyaudiosrc", NULL);
528 empathy_audio_src_set_echo_cancel (EmpathyGstAudioSrc *src,
531 DEBUG ("Src echo cancellation setting: %s", enable ? "on" : "off");
532 empathy_audio_set_stream_properties (src->priv->src, enable);
536 empathy_audio_src_set_volume (EmpathyGstAudioSrc *src, gdouble volume)
538 g_object_set (src, "volume", volume, NULL);
542 empathy_audio_src_get_volume (EmpathyGstAudioSrc *src)
544 return src->priv->volume;
548 empathy_audio_src_get_microphone (EmpathyGstAudioSrc *src)
550 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (src);
552 return priv->source_idx;
556 empathy_audio_src_change_microphone_cb (GObject *source_object,
557 GAsyncResult *result,
560 EmpathyMicMonitor *monitor = EMPATHY_MIC_MONITOR (source_object);
561 GSimpleAsyncResult *simple = user_data;
562 GError *error = NULL;
564 if (!empathy_mic_monitor_change_microphone_finish (monitor,
567 g_simple_async_result_take_error (simple, error);
570 g_simple_async_result_complete (simple);
571 g_object_unref (simple);
575 empathy_audio_src_change_microphone_async (EmpathyGstAudioSrc *src,
577 GAsyncReadyCallback callback,
580 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (src);
581 guint source_output_idx;
582 GSimpleAsyncResult *simple;
584 simple = g_simple_async_result_new (G_OBJECT (src), callback, user_data,
585 empathy_audio_src_change_microphone_async);
587 if (!empathy_audio_src_supports_changing_mic (src))
589 g_simple_async_result_set_error (simple, G_IO_ERROR, G_IO_ERROR_FAILED,
590 "pulsesrc is not new enough to support changing microphone");
591 g_simple_async_result_complete_in_idle (simple);
592 g_object_unref (simple);
596 source_output_idx = empathy_audio_src_get_mic_index (src);
598 if (source_output_idx == PA_INVALID_INDEX)
600 g_simple_async_result_set_error (simple, G_IO_ERROR, G_IO_ERROR_FAILED,
601 "pulsesrc is not yet PLAYING");
602 g_simple_async_result_complete_in_idle (simple);
603 g_object_unref (simple);
607 empathy_mic_monitor_change_microphone_async (priv->mic_monitor,
608 source_output_idx, microphone, empathy_audio_src_change_microphone_cb,
613 empathy_audio_src_change_microphone_finish (EmpathyGstAudioSrc *src,
614 GAsyncResult *result,
617 empathy_implement_finish_void (src,
618 empathy_audio_src_change_microphone_async);
622 empathy_audio_src_set_mute (EmpathyGstAudioSrc *self,
625 empathy_audio_set_hw_mute (self, mute);
627 g_object_notify (G_OBJECT (self), "mute");