Move farsight-using sources to src

And only build them for empathy-av, since they use farsight.

1 files changed, 387 insertions, 0 deletions

diff --git a/src/empathy-audio-src.c b/src/empathy-audio-src.c
new file mode 100644
index 000000000..a3416f2ea
--- /dev/null
+++ b/src/empathy-audio-src.c
@@ -0,0 +1,387 @@
+/*
+ * empathy-gst-audio-src.c - Source for EmpathyGstAudioSrc
+ * 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-src.h"
+
+G_DEFINE_TYPE(EmpathyGstAudioSrc, empathy_audio_src, GST_TYPE_BIN)
+
+/* signal enum */
+enum
+{
+    PEAK_LEVEL_CHANGED,
+    RMS_LEVEL_CHANGED,
+    LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = {0};
+
+enum {
+    PROP_VOLUME = 1,
+    PROP_RMS_LEVEL,
+    PROP_PEAK_LEVEL,
+};
+
+/* private structure */
+typedef struct _EmpathyGstAudioSrcPrivate EmpathyGstAudioSrcPrivate;
+
+struct _EmpathyGstAudioSrcPrivate
+{
+  gboolean dispose_has_run;
+  GstElement *src;
+  GstElement *volume;
+  GstElement *level;
+  FsElementAddedNotifier *notifier;
+
+  gdouble peak_level;
+  gdouble rms_level;
+
+  GMutex *lock;
+  guint idle_id;
+};
+
+#define EMPATHY_GST_AUDIO_SRC_GET_PRIVATE(o) \
+  (G_TYPE_INSTANCE_GET_PRIVATE ((o), EMPATHY_TYPE_GST_AUDIO_SRC, \
+  EmpathyGstAudioSrcPrivate))
+
+static void
+empathy_audio_src_element_added_cb (FsElementAddedNotifier *notifier,
+  GstBin *bin, GstElement *element, EmpathyGstAudioSrc *self)
+{
+  EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
+
+  if (g_object_class_find_property (G_OBJECT_GET_CLASS (element), "volume"))
+    {
+      gdouble volume;
+
+      volume = empathy_audio_src_get_volume (self);
+      empathy_audio_src_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_src_set_volume (self, volume);
+    }
+}
+
+static void
+empathy_audio_src_init (EmpathyGstAudioSrc *obj)
+{
+  EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (obj);
+  GstPad *ghost, *src;
+
+  priv->peak_level = -G_MAXDOUBLE;
+  priv->lock = g_mutex_new ();
+
+  priv->notifier = fs_element_added_notifier_new ();
+  g_signal_connect (priv->notifier, "element-added",
+    G_CALLBACK (empathy_audio_src_element_added_cb), obj);
+
+  priv->src = gst_element_factory_make ("gconfaudiosrc", NULL);
+  gst_bin_add (GST_BIN (obj), priv->src);
+
+  fs_element_added_notifier_add (priv->notifier, GST_BIN (priv->src));
+
+  priv->volume = gst_element_factory_make ("volume", NULL);
+  g_object_ref (priv->volume);
+
+  gst_bin_add (GST_BIN (obj), priv->volume);
+  gst_element_link (priv->src, priv->volume);
+
+  priv->level = gst_element_factory_make ("level", NULL);
+  gst_bin_add (GST_BIN (obj), priv->level);
+  gst_element_link (priv->volume, priv->level);
+
+  src = gst_element_get_static_pad (priv->level, "src");
+
+  ghost = gst_ghost_pad_new ("src", src);
+  gst_element_add_pad (GST_ELEMENT (obj), ghost);
+
+  gst_object_unref (G_OBJECT (src));
+}
+
+static void empathy_audio_src_dispose (GObject *object);
+static void empathy_audio_src_finalize (GObject *object);
+static void empathy_audio_src_handle_message (GstBin *bin,
+  GstMessage *message);
+
+static gboolean empathy_audio_src_levels_updated (gpointer user_data);
+
+static void
+empathy_audio_src_set_property (GObject *object,
+  guint property_id, const GValue *value, GParamSpec *pspec)
+{
+  switch (property_id)
+    {
+      case PROP_VOLUME:
+        empathy_audio_src_set_volume (EMPATHY_GST_AUDIO_SRC (object),
+          g_value_get_double (value));
+        break;
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+empathy_audio_src_get_property (GObject *object,
+  guint property_id, GValue *value, GParamSpec *pspec)
+{
+  EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (object);
+  EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
+
+  switch (property_id)
+    {
+      case PROP_VOLUME:
+        g_value_set_double (value,
+          empathy_audio_src_get_volume (self));
+        break;
+      case PROP_PEAK_LEVEL:
+        g_mutex_lock (priv->lock);
+        g_value_set_double (value, priv->peak_level);
+        g_mutex_unlock (priv->lock);
+        break;
+      case PROP_RMS_LEVEL:
+        g_mutex_lock (priv->lock);
+        g_value_set_double (value, priv->rms_level);
+        g_mutex_unlock (priv->lock);
+        break;
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+empathy_audio_src_class_init (EmpathyGstAudioSrcClass
+  *empathy_audio_src_class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (empathy_audio_src_class);
+  GstBinClass *gstbin_class = GST_BIN_CLASS (empathy_audio_src_class);
+  GParamSpec *param_spec;
+
+  g_type_class_add_private (empathy_audio_src_class,
+    sizeof (EmpathyGstAudioSrcPrivate));
+
+  object_class->dispose = empathy_audio_src_dispose;
+  object_class->finalize = empathy_audio_src_finalize;
+
+  object_class->set_property = empathy_audio_src_set_property;
+  object_class->get_property = empathy_audio_src_get_property;
+
+  gstbin_class->handle_message =
+    GST_DEBUG_FUNCPTR (empathy_audio_src_handle_message);
+
+  param_spec = g_param_spec_double ("volume", "Volume", "volume contol",
+    0.0, 5.0, 1.0,
+    G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+  g_object_class_install_property (object_class, PROP_VOLUME, param_spec);
+
+  param_spec = g_param_spec_double ("peak-level", "peak level", "peak level",
+    -G_MAXDOUBLE, G_MAXDOUBLE, 0,
+    G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+  g_object_class_install_property (object_class, PROP_VOLUME, param_spec);
+
+  signals[PEAK_LEVEL_CHANGED] = g_signal_new ("peak-level-changed",
+    G_TYPE_FROM_CLASS (empathy_audio_src_class),
+    G_SIGNAL_RUN_LAST,
+    0,
+    NULL, NULL,
+    g_cclosure_marshal_VOID__DOUBLE,
+    G_TYPE_NONE, 1, G_TYPE_DOUBLE);
+
+  param_spec = g_param_spec_double ("rms-level", "RMS level", "RMS level",
+    -G_MAXDOUBLE, G_MAXDOUBLE, 0,
+    G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+  g_object_class_install_property (object_class, PROP_VOLUME, param_spec);
+
+
+  signals[RMS_LEVEL_CHANGED] = g_signal_new ("rms-level-changed",
+    G_TYPE_FROM_CLASS (empathy_audio_src_class),
+    G_SIGNAL_RUN_LAST,
+    0,
+    NULL, NULL,
+    g_cclosure_marshal_VOID__DOUBLE,
+    G_TYPE_NONE, 1, G_TYPE_DOUBLE);
+}
+
+void
+empathy_audio_src_dispose (GObject *object)
+{
+  EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (object);
+  EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
+
+  if (priv->dispose_has_run)
+    return;
+
+  priv->dispose_has_run = TRUE;
+
+  if (priv->idle_id != 0)
+    g_source_remove (priv->idle_id);
+
+  priv->idle_id = 0;
+
+  /* release any references held by the object here */
+
+  if (G_OBJECT_CLASS (empathy_audio_src_parent_class)->dispose)
+    G_OBJECT_CLASS (empathy_audio_src_parent_class)->dispose (object);
+}
+
+void
+empathy_audio_src_finalize (GObject *object)
+{
+  EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (object);
+  EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
+
+  /* free any data held directly by the object here */
+  g_mutex_free (priv->lock);
+
+  G_OBJECT_CLASS (empathy_audio_src_parent_class)->finalize (object);
+}
+
+static gboolean
+empathy_audio_src_levels_updated (gpointer user_data)
+{
+  EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (user_data);
+  EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
+
+  g_mutex_lock (priv->lock);
+
+  g_signal_emit (self, signals[PEAK_LEVEL_CHANGED], 0, priv->peak_level);
+  g_signal_emit (self, signals[RMS_LEVEL_CHANGED], 0, priv->rms_level);
+  priv->idle_id = 0;
+
+  g_mutex_unlock (priv->lock);
+
+  return FALSE;
+}
+
+static void
+empathy_audio_src_handle_message (GstBin *bin, GstMessage *message)
+{
+  EmpathyGstAudioSrc *self = EMPATHY_GST_AUDIO_SRC (bin);
+  EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (self);
+
+  if  (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ELEMENT &&
+        GST_MESSAGE_SRC (message) == GST_OBJECT (priv->level))
+    {
+      const GstStructure *s;
+      const gchar *name;
+      const GValue *list;
+      guint i, len;
+      gdouble peak = -G_MAXDOUBLE;
+      gdouble rms = -G_MAXDOUBLE;
+
+      s = gst_message_get_structure (message);
+      name = gst_structure_get_name (s);
+
+      if (g_strcmp0 ("level", name) != 0)
+        goto out;
+
+      list = gst_structure_get_value (s, "peak");
+      len = gst_value_list_get_size (list);
+
+      for (i =0 ; i < len; i++)
+        {
+          const GValue *value;
+          gdouble db;
+
+          value = gst_value_list_get_value (list, i);
+          db = g_value_get_double (value);
+          peak = MAX (db, peak);
+        }
+
+      list = gst_structure_get_value (s, "rms");
+      len = gst_value_list_get_size (list);
+
+      for (i =0 ; i < len; i++)
+        {
+          const GValue *value;
+          gdouble db;
+
+          value = gst_value_list_get_value (list, i);
+          db = g_value_get_double (value);
+          rms = MAX (db, rms);
+        }
+
+      g_mutex_lock (priv->lock);
+
+      priv->peak_level = peak;
+      priv->rms_level = rms;
+      if (priv->idle_id == 0)
+        priv->idle_id = g_idle_add (empathy_audio_src_levels_updated, self);
+
+      g_mutex_unlock (priv->lock);
+    }
+
+out:
+   GST_BIN_CLASS (empathy_audio_src_parent_class)->handle_message (bin,
+    message);
+}
+
+GstElement *
+empathy_audio_src_new (void)
+{
+  static gboolean registered = FALSE;
+
+  if (!registered) {
+    if (!gst_element_register (NULL, "empathyaudiosrc",
+            GST_RANK_NONE, EMPATHY_TYPE_GST_AUDIO_SRC))
+      return NULL;
+    registered = TRUE;
+  }
+  return gst_element_factory_make ("empathyaudiosrc", NULL);
+}
+
+void
+empathy_audio_src_set_volume (EmpathyGstAudioSrc *src, gdouble volume)
+{
+  EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (src);
+  GParamSpec *pspec;
+  GParamSpecDouble *pspec_double;
+
+  pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (priv->volume),
+    "volume");
+
+  g_assert (pspec != NULL);
+
+  pspec_double = G_PARAM_SPEC_DOUBLE (pspec);
+
+  volume = CLAMP (volume, pspec_double->minimum, pspec_double->maximum);
+
+  g_object_set (G_OBJECT (priv->volume), "volume", volume, NULL);
+}
+
+gdouble
+empathy_audio_src_get_volume (EmpathyGstAudioSrc *src)
+{
+  EmpathyGstAudioSrcPrivate *priv = EMPATHY_GST_AUDIO_SRC_GET_PRIVATE (src);
+  gdouble volume;
+
+  g_object_get (G_OBJECT (priv->volume), "volume", &volume, NULL);
+
+  return volume;
+}
+
+