--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/3rdparty/phonon/gstreamer/gsthelper.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,170 @@
+/*  This file is part of the KDE project.
+
+    Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+
+    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 or 3 of the License.
+
+    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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <gst/interfaces/propertyprobe.h>
+#include <gst/gst.h>
+#include "common.h"
+#include "gsthelper.h"
+
+#include <QtCore/QList>
+
+QT_BEGIN_NAMESPACE
+
+namespace Phonon
+{
+namespace Gstreamer
+{
+
+/**
+ * Probes a gstElement for a list of settable string-property values
+ *
+ * @return a QStringList containing a list of allwed string values for the given
+ *           element
+ */
+QList<QByteArray> GstHelper::extractProperties(GstElement *elem, const QByteArray &value)
+{
+    Q_ASSERT(elem);
+    QList<QByteArray> list;
+
+    if (GST_IS_PROPERTY_PROBE(elem)) {
+        GstPropertyProbe *probe = GST_PROPERTY_PROBE(elem);
+        const GParamSpec *devspec = 0;
+        GValueArray *array = NULL;
+
+        if ((devspec = gst_property_probe_get_property (probe, value))) {
+            if ((array = gst_property_probe_probe_and_get_values (probe, devspec))) {
+                for (unsigned int device = 0; device < array->n_values; device++) {
+                    GValue *deviceId = g_value_array_get_nth (array, device);
+                    list.append(g_value_get_string(deviceId));
+                }
+            }
+            if (array)
+                g_value_array_free (array);
+        }
+    }
+    return list;
+}
+
+/**
+ * Sets the string value of a GstElement's property
+ *
+ * @return false if the value could not be set.
+ */
+bool GstHelper::setProperty(GstElement *elem, const char *propertyName, const QByteArray &propertyValue)
+{
+    Q_ASSERT(elem);
+    Q_ASSERT(propertyName && strlen(propertyName));
+
+    if (GST_IS_PROPERTY_PROBE(elem) && gst_property_probe_get_property( GST_PROPERTY_PROBE( elem), propertyName ) ) {
+        g_object_set(G_OBJECT(elem), propertyName, propertyValue.constData(), (const char*)NULL);
+        return true;
+    }
+    return false;
+}
+
+/**
+ * Queries an element for the value of an object property
+ */
+QByteArray GstHelper::property(GstElement *elem, const char *propertyName)
+{
+    Q_ASSERT(elem);
+    Q_ASSERT(propertyName && strlen(propertyName));
+    QByteArray retVal;
+
+    if (GST_IS_PROPERTY_PROBE(elem) && gst_property_probe_get_property( GST_PROPERTY_PROBE(elem), propertyName)) {
+        gchar *value = NULL;
+        g_object_get (G_OBJECT(elem), propertyName, &value, (const char*)NULL);
+        retVal = QByteArray(value);
+        g_free (value);
+    }
+    return retVal;
+}
+
+/**
+ * Queries a GstObject for it's name
+ */
+QByteArray GstHelper::name(GstObject *obj)
+{
+    Q_ASSERT(obj);
+    QByteArray retVal;
+    gchar *value = NULL;
+    if ((value = gst_object_get_name (obj))) {
+        retVal = QByteArray(value);
+        g_free (value);
+    }
+    return retVal;
+}
+
+
+/***
+ * Creates an instance of a playbin with "audio-src" and
+ * "video-src" ghost pads to allow redirected output streams.
+ *
+ * ### This function is probably not required now that MediaObject is based
+ *     on decodebin directly.
+ */
+GstElement* GstHelper::createPluggablePlaybin()
+{
+    GstElement *playbin = 0;
+    //init playbin and add to our pipeline
+    playbin = gst_element_factory_make("playbin", NULL);
+
+    //Create an identity element to redirect sound
+    GstElement *audioSinkBin =  gst_bin_new (NULL);
+    GstElement *audioPipe = gst_element_factory_make("identity", NULL);
+    gst_bin_add(GST_BIN(audioSinkBin), audioPipe);
+
+    //Create a sinkpad on the identity
+    GstPad *audiopad = gst_element_get_pad (audioPipe, "sink");
+    gst_element_add_pad (audioSinkBin, gst_ghost_pad_new ("sink", audiopad));
+    gst_object_unref (audiopad);
+
+    //Create an "audio_src" source pad on the playbin
+    GstPad *audioPlaypad = gst_element_get_pad (audioPipe, "src");
+    gst_element_add_pad (playbin, gst_ghost_pad_new ("audio_src", audioPlaypad));
+    gst_object_unref (audioPlaypad);
+
+    //Done with our audio redirection
+    g_object_set (G_OBJECT(playbin), "audio-sink", audioSinkBin, (const char*)NULL);
+
+    // * * Redirect video to "video_src" pad : * *
+
+    //Create an identity element to redirect sound
+    GstElement *videoSinkBin =  gst_bin_new (NULL);
+    GstElement *videoPipe = gst_element_factory_make("identity", NULL);
+    gst_bin_add(GST_BIN(videoSinkBin), videoPipe);
+
+    //Create a sinkpad on the identity
+    GstPad *videopad = gst_element_get_pad (videoPipe, "sink");
+    gst_element_add_pad (videoSinkBin, gst_ghost_pad_new ("sink", videopad));
+    gst_object_unref (videopad);
+
+    //Create an "audio_src" source pad on the playbin
+    GstPad *videoPlaypad = gst_element_get_pad (videoPipe, "src");
+    gst_element_add_pad (playbin, gst_ghost_pad_new ("video_src", videoPlaypad));
+    gst_object_unref (videoPlaypad);
+
+    //Done with our video redirection
+    g_object_set (G_OBJECT(playbin), "video-sink", videoSinkBin, (const char*)NULL);
+    return playbin;
+}
+
+
+} //namespace Gstreamer
+} //namespace Phonon
+
+QT_END_NAMESPACE