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 <libempathy/empathy-utils.h>
27 #include <libempathy-gtk/empathy-call-utils.h>
29 #include "empathy-audio-src.h"
31 #include "empathy-mic-monitor.h"
33 #define DEBUG_FLAG EMPATHY_DEBUG_VOIP
34 #include <libempathy/empathy-debug.h>
36 G_DEFINE_TYPE(EmpathyGstAudioSrc, empathy_audio_src, GST_TYPE_BIN)
46 static guint signals[LAST_SIGNAL] = {0};
55 /* private structure */
56 typedef struct _EmpathyGstAudioSrcPrivate EmpathyGstAudioSrcPrivate;
58 struct _EmpathyGstAudioSrcPrivate
60 gboolean dispose_has_run;
65 EmpathyMicMonitor *mic_monitor;
67 /* 0 if not known yet */
68 guint source_output_idx;
69 /* G_MAXUINT if not known yet */
79 #define EMPATHY_GST_AUDIO_SRC_GET_PRIVATE(o) \
80 (G_TYPE_INSTANCE_GET_PRIVATE ((o), EMPATHY_TYPE_GST_AUDIO_SRC, \
81 EmpathyGstAudioSrcPrivate))
84 empathy_audio_src_supports_changing_mic (EmpathyGstAudioSrc *self)
86 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
87 GObjectClass *object_class;
89 object_class = G_OBJECT_GET_CLASS (priv->src);
91 return (g_object_class_find_property (object_class,
92 "source-output-index") != NULL);
96 empathy_audio_src_get_mic_index (EmpathyGstAudioSrc *self)
98 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
99 guint audio_src_idx = PA_INVALID_INDEX;
101 if (empathy_audio_src_supports_changing_mic (self))
102 g_object_get (priv->src,
103 "source-output-index", &audio_src_idx,
106 return audio_src_idx;
111 empathy_audio_src_microphone_changed_cb (EmpathyMicMonitor *monitor,
112 guint source_output_idx,
116 EmpathyGstAudioSrc *self = user_data;
117 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
120 audio_src_idx = empathy_audio_src_get_mic_index (self);
122 if (source_output_idx == PA_INVALID_INDEX
123 || source_output_idx != audio_src_idx)
126 if (priv->source_idx == source_idx)
129 priv->source_idx = source_idx;
130 g_object_notify (G_OBJECT (self), "microphone");
134 empathy_audio_src_get_current_mic_cb (GObject *source_object,
135 GAsyncResult *result,
138 EmpathyMicMonitor *monitor = EMPATHY_MIC_MONITOR (source_object);
139 EmpathyGstAudioSrc *self = user_data;
140 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
142 GError *error = NULL;
144 source_idx = empathy_mic_monitor_get_current_mic_finish (monitor, result, &error);
148 DEBUG ("Failed to get current mic: %s", error->message);
149 g_clear_error (&error);
153 if (priv->source_idx == source_idx)
156 priv->source_idx = source_idx;
157 g_object_notify (G_OBJECT (self), "microphone");
161 empathy_audio_src_source_output_index_notify (GObject *object,
163 EmpathyGstAudioSrc *self)
165 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
166 guint source_output_idx;
168 source_output_idx = empathy_audio_src_get_mic_index (self);
170 if (source_output_idx == PA_INVALID_INDEX)
173 if (priv->source_output_idx == source_output_idx)
176 /* It's actually changed. */
177 priv->source_output_idx = source_output_idx;
179 empathy_mic_monitor_get_current_mic_async (priv->mic_monitor,
180 source_output_idx, empathy_audio_src_get_current_mic_cb, self);
187 const gchar *description;
189 description = g_getenv ("EMPATHY_AUDIO_SRC");
191 if (description != NULL)
193 GError *error = NULL;
195 src = gst_parse_bin_from_description (description, TRUE, &error);
198 DEBUG ("Failed to create bin %s: %s", description, error->message);
199 g_error_free (error);
205 /* Use pulsesrc as default */
206 src = gst_element_factory_make ("pulsesrc", NULL);
210 empathy_call_set_stream_properties (src);
216 empathy_audio_src_init (EmpathyGstAudioSrc *obj)
218 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (obj);
221 priv->peak_level = -G_MAXDOUBLE;
222 priv->lock = g_mutex_new ();
224 priv->src = create_src ();
225 if (priv->src == NULL)
228 gst_bin_add (GST_BIN (obj), priv->src);
230 priv->volume = gst_element_factory_make ("volume", NULL);
231 g_object_ref (priv->volume);
233 gst_bin_add (GST_BIN (obj), priv->volume);
234 gst_element_link (priv->src, priv->volume);
236 priv->level = gst_element_factory_make ("level", NULL);
237 gst_bin_add (GST_BIN (obj), priv->level);
238 gst_element_link (priv->volume, priv->level);
240 src = gst_element_get_static_pad (priv->level, "src");
242 ghost = gst_ghost_pad_new ("src", src);
243 gst_element_add_pad (GST_ELEMENT (obj), ghost);
245 gst_object_unref (G_OBJECT (src));
247 /* Listen to changes to GstPulseSrc:source-output-index so we know when
248 * it's no longer PA_INVALID_INDEX (starting for the first time) or if it
249 * changes (READY->NULL->READY...) */
250 g_signal_connect (priv->src, "notify::source-output-index",
251 G_CALLBACK (empathy_audio_src_source_output_index_notify),
254 priv->mic_monitor = empathy_mic_monitor_new ();
255 g_signal_connect (priv->mic_monitor, "microphone-changed",
256 G_CALLBACK (empathy_audio_src_microphone_changed_cb), obj);
258 priv->source_idx = PA_INVALID_INDEX;
261 static void empathy_audio_src_dispose (GObject *object);
262 static void empathy_audio_src_finalize (GObject *object);
263 static void empathy_audio_src_handle_message (GstBin *bin,
264 GstMessage *message);
266 static gboolean empathy_audio_src_levels_updated (gpointer user_data);
269 empathy_audio_src_set_property (GObject *object,
270 guint property_id, const GValue *value, GParamSpec *pspec)
275 empathy_audio_src_set_volume (EMPATHY_GST_AUDIO_SRC (object),
276 g_value_get_double (value));
279 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
284 empathy_audio_src_get_property (GObject *object,
285 guint property_id, GValue *value, GParamSpec *pspec)
287 EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (object);
288 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
293 g_value_set_double (value,
294 empathy_audio_src_get_volume (self));
296 case PROP_PEAK_LEVEL:
297 g_mutex_lock (priv->lock);
298 g_value_set_double (value, priv->peak_level);
299 g_mutex_unlock (priv->lock);
302 g_mutex_lock (priv->lock);
303 g_value_set_double (value, priv->rms_level);
304 g_mutex_unlock (priv->lock);
306 case PROP_MICROPHONE:
307 g_value_set_uint (value, priv->source_idx);
310 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
315 empathy_audio_src_class_init (EmpathyGstAudioSrcClass
316 *empathy_audio_src_class)
318 GObjectClass *object_class = G_OBJECT_CLASS (empathy_audio_src_class);
319 GstBinClass *gstbin_class = GST_BIN_CLASS (empathy_audio_src_class);
320 GParamSpec *param_spec;
322 g_type_class_add_private (empathy_audio_src_class,
323 sizeof (EmpathyGstAudioSrcPrivate));
325 object_class->dispose = empathy_audio_src_dispose;
326 object_class->finalize = empathy_audio_src_finalize;
328 object_class->set_property = empathy_audio_src_set_property;
329 object_class->get_property = empathy_audio_src_get_property;
331 gstbin_class->handle_message =
332 GST_DEBUG_FUNCPTR (empathy_audio_src_handle_message);
334 param_spec = g_param_spec_double ("volume", "Volume", "volume contol",
336 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
337 g_object_class_install_property (object_class, PROP_VOLUME, param_spec);
339 param_spec = g_param_spec_double ("peak-level", "peak level", "peak level",
340 -G_MAXDOUBLE, G_MAXDOUBLE, 0,
341 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
342 g_object_class_install_property (object_class, PROP_PEAK_LEVEL, param_spec);
344 param_spec = g_param_spec_uint ("microphone", "microphone", "microphone",
345 0, G_MAXUINT, G_MAXUINT,
346 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
347 g_object_class_install_property (object_class, PROP_MICROPHONE, param_spec);
349 signals[PEAK_LEVEL_CHANGED] = g_signal_new ("peak-level-changed",
350 G_TYPE_FROM_CLASS (empathy_audio_src_class),
354 g_cclosure_marshal_generic,
355 G_TYPE_NONE, 1, G_TYPE_DOUBLE);
357 param_spec = g_param_spec_double ("rms-level", "RMS level", "RMS level",
358 -G_MAXDOUBLE, G_MAXDOUBLE, 0,
359 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
360 g_object_class_install_property (object_class, PROP_RMS_LEVEL, param_spec);
362 signals[RMS_LEVEL_CHANGED] = g_signal_new ("rms-level-changed",
363 G_TYPE_FROM_CLASS (empathy_audio_src_class),
367 g_cclosure_marshal_generic,
368 G_TYPE_NONE, 1, G_TYPE_DOUBLE);
372 empathy_audio_src_dispose (GObject *object)
374 EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (object);
375 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
377 if (priv->dispose_has_run)
380 priv->dispose_has_run = TRUE;
382 if (priv->idle_id != 0)
383 g_source_remove (priv->idle_id);
387 tp_clear_object (&priv->mic_monitor);
389 /* release any references held by the object here */
391 if (G_OBJECT_CLASS (empathy_audio_src_parent_class)->dispose)
392 G_OBJECT_CLASS (empathy_audio_src_parent_class)->dispose (object);
396 empathy_audio_src_finalize (GObject *object)
398 EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (object);
399 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
401 /* free any data held directly by the object here */
402 g_mutex_free (priv->lock);
404 G_OBJECT_CLASS (empathy_audio_src_parent_class)->finalize (object);
408 empathy_audio_src_levels_updated (gpointer user_data)
410 EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (user_data);
411 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
413 g_mutex_lock (priv->lock);
415 g_signal_emit (self, signals[PEAK_LEVEL_CHANGED], 0, priv->peak_level);
416 g_signal_emit (self, signals[RMS_LEVEL_CHANGED], 0, priv->rms_level);
419 g_mutex_unlock (priv->lock);
425 empathy_audio_src_handle_message (GstBin *bin, GstMessage *message)
427 EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (bin);
428 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
430 if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ELEMENT &&
431 GST_MESSAGE_SRC (message) == GST_OBJECT (priv->level))
433 const GstStructure *s;
437 gdouble peak = -G_MAXDOUBLE;
438 gdouble rms = -G_MAXDOUBLE;
440 s = gst_message_get_structure (message);
441 name = gst_structure_get_name (s);
443 if (g_strcmp0 ("level", name) != 0)
446 list = gst_structure_get_value (s, "peak");
447 len = gst_value_list_get_size (list);
449 for (i =0 ; i < len; i++)
454 value = gst_value_list_get_value (list, i);
455 db = g_value_get_double (value);
456 peak = MAX (db, peak);
459 list = gst_structure_get_value (s, "rms");
460 len = gst_value_list_get_size (list);
462 for (i =0 ; i < len; i++)
467 value = gst_value_list_get_value (list, i);
468 db = g_value_get_double (value);
472 g_mutex_lock (priv->lock);
474 priv->peak_level = peak;
475 priv->rms_level = rms;
476 if (priv->idle_id == 0)
477 priv->idle_id = g_idle_add (empathy_audio_src_levels_updated, self);
479 g_mutex_unlock (priv->lock);
483 GST_BIN_CLASS (empathy_audio_src_parent_class)->handle_message (bin,
488 empathy_audio_src_new (void)
490 static gboolean registered = FALSE;
493 if (!gst_element_register (NULL, "empathyaudiosrc",
494 GST_RANK_NONE, EMPATHY_TYPE_GST_AUDIO_SRC))
498 return gst_element_factory_make ("empathyaudiosrc", NULL);
502 empathy_audio_src_set_volume (EmpathyGstAudioSrc *src, gdouble volume)
504 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (src);
506 GParamSpecDouble *pspec_double;
508 pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (priv->volume),
511 g_assert (pspec != NULL);
513 pspec_double = G_PARAM_SPEC_DOUBLE (pspec);
515 volume = CLAMP (volume, pspec_double->minimum, pspec_double->maximum);
517 g_object_set (G_OBJECT (priv->volume), "volume", volume, NULL);
521 empathy_audio_src_get_volume (EmpathyGstAudioSrc *src)
523 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (src);
526 g_object_get (G_OBJECT (priv->volume), "volume", &volume, NULL);
532 empathy_audio_src_get_microphone (EmpathyGstAudioSrc *src)
534 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (src);
536 return priv->source_idx;
540 empathy_audio_src_change_microphone_cb (GObject *source_object,
541 GAsyncResult *result,
544 EmpathyMicMonitor *monitor = EMPATHY_MIC_MONITOR (source_object);
545 GSimpleAsyncResult *simple = user_data;
546 GError *error = NULL;
548 if (!empathy_mic_monitor_change_microphone_finish (monitor,
551 g_simple_async_result_take_error (simple, error);
554 g_simple_async_result_complete (simple);
555 g_object_unref (simple);
559 empathy_audio_src_change_microphone_async (EmpathyGstAudioSrc *src,
561 GAsyncReadyCallback callback,
564 EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (src);
565 guint source_output_idx;
566 GSimpleAsyncResult *simple;
568 simple = g_simple_async_result_new (G_OBJECT (src), callback, user_data,
569 empathy_audio_src_change_microphone_async);
571 if (!empathy_audio_src_supports_changing_mic (src))
573 g_simple_async_result_set_error (simple, G_IO_ERROR, G_IO_ERROR_FAILED,
574 "pulsesrc is not new enough to support changing microphone");
575 g_simple_async_result_complete_in_idle (simple);
576 g_object_unref (simple);
580 source_output_idx = empathy_audio_src_get_mic_index (src);
582 if (source_output_idx == PA_INVALID_INDEX)
584 g_simple_async_result_set_error (simple, G_IO_ERROR, G_IO_ERROR_FAILED,
585 "pulsesrc is not yet PLAYING");
586 g_simple_async_result_complete_in_idle (simple);
587 g_object_unref (simple);
591 empathy_mic_monitor_change_microphone_async (priv->mic_monitor,
592 source_output_idx, microphone, empathy_audio_src_change_microphone_cb,
597 empathy_audio_src_change_microphone_finish (EmpathyGstAudioSrc *src,
598 GAsyncResult *result,
601 empathy_implement_finish_void (src,
602 empathy_audio_src_change_microphone_async);