--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_symbian/gst/devsound/gsterrorconcealmentinterface.h	Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,71 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+
+#ifndef __ERROR_CONCEALMENT_INTERFACE__H
+#define __ERROR_CONCEALMENT_INTERFACE__H
+
+#include <glib.h>
+#include <gst/gstelement.h>
+#include <gst/gstpluginfeature.h>
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_ERROR_CONCEALMENT     (gst_error_concealment_get_type ())
+#define GST_ERROR_CONCEALMENT(obj)     (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_ERROR_CONCEALMENT, GstErrorConcealment))
+#define GST_IS_ERROR_CONCEALMENT(obj)      (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_ERROR_CONCEALMENT))
+#define GST_ERROR_CONCEALMENT_GET_IFACE(obj)   (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GST_TYPE_ERROR_CONCEALMENT, GstErrorConcealmentIntfc))
+
+typedef struct _GstErrorConcealment      GstErrorConcealment;
+typedef struct _GstErrorConcealmentIntfc GstErrorConcealmentIntfc;
+
+struct _GstErrorConcealmentIntfc
+    {
+    GTypeInterface parent;
+    /**
+     * Indicates that an frame of encoded audio is lost and that error
+     * concealment should be performed for a lost frame.
+     * By definition, the next buffer sent to the decoder will contain no
+     * valid audio data.
+     * @return status
+     */
+    gint (*ConcealErrorForNextBuffer) (void);
+
+    /**
+     * Puts the hwdevice into a frame-based interface.
+     * The alternate mode of interface would be buffer-based.
+     * @param aFrameMode
+     * @return status
+     */
+    gint (*SetFrameMode)(gboolean aFrameMode);
+
+    /**
+     * Query to find out if frame-based interface is required by hwdevice
+     * for supporting error concealment.
+     * @param aFrameModeRqrd indicates if frame mode is required.
+     * @return status
+     */
+    gint (*FrameModeRqrdForEC)(gboolean* aFrameModeRqrd);
+
+    };
+
+IMPORT_C GType gst_error_concealment_get_type(void);
+
+G_END_DECLS
+
+#endif /* __ERROR_CONCEALMENT_INTERFACE */