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diff --git a/TelepathyQt/simple-call-observer.h b/TelepathyQt/simple-call-observer.h
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+/**
+ * This file is part of TelepathyQt
+ *
+ * @copyright Copyright (C) 2011 Collabora Ltd. <http://www.collabora.co.uk/>
+ * @copyright Copyright (C) 2011 Nokia Corporation
+ * @license LGPL 2.1
+ *
+ * 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
+ */
+
+#ifndef _TelepathyQt_simple_call_observer_h_HEADER_GUARD_
+#define _TelepathyQt_simple_call_observer_h_HEADER_GUARD_
+
+#include <TelepathyQt/Constants>
+#include <TelepathyQt/Types>
+
+#include <QObject>
+
+namespace Tp
+{
+
+class PendingOperation;
+
+class TP_QT_EXPORT SimpleCallObserver : public QObject,
+                public RefCounted
+{
+    Q_OBJECT
+    Q_DISABLE_COPY(SimpleCallObserver)
+    Q_FLAGS(CallDirection CallDirections)
+
+public:
+    enum CallDirection {
+        CallDirectionIncoming = 0x01,
+        CallDirectionOutgoing = 0x02,
+        CallDirectionBoth = CallDirectionIncoming | CallDirectionOutgoing
+    };
+    Q_DECLARE_FLAGS(CallDirections, CallDirection)
+
+    static SimpleCallObserverPtr create(const AccountPtr &account,
+            CallDirection direction = CallDirectionBoth);
+    static SimpleCallObserverPtr create(const AccountPtr &account,
+            const ContactPtr &contact,
+            CallDirection direction = CallDirectionBoth);
+    static SimpleCallObserverPtr create(const AccountPtr &account,
+            const QString &contactIdentifier,
+            CallDirection direction = CallDirectionBoth);
+
+    virtual ~SimpleCallObserver();
+
+    AccountPtr account() const;
+    QString contactIdentifier() const;
+    CallDirection direction() const;
+
+    QList<StreamedMediaChannelPtr> streamedMediaCalls() const;
+
+Q_SIGNALS:
+    void streamedMediaCallStarted(const Tp::StreamedMediaChannelPtr &channel);
+    void streamedMediaCallEnded(const Tp::StreamedMediaChannelPtr &channel,
+            const QString &errorName, const QString &errorMessage);
+
+private Q_SLOTS:
+    TP_QT_NO_EXPORT void onNewChannels(const QList<Tp::ChannelPtr> &channels);
+    TP_QT_NO_EXPORT void onChannelInvalidated(const Tp::ChannelPtr &channel,
+            const QString &errorName, const QString &errorMessage);
+
+private:
+    TP_QT_NO_EXPORT static SimpleCallObserverPtr create(
+            const AccountPtr &account,
+            const QString &contactIdentifier, bool requiresNormalization,
+            CallDirection direction);
+
+    TP_QT_NO_EXPORT SimpleCallObserver(const AccountPtr &account,
+            const QString &contactIdentifier, bool requiresNormalization,
+            CallDirection direction);
+
+    struct Private;
+    friend struct Private;
+    Private *mPriv;
+};
+
+} // Tp
+
+#endif