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+/******************************** MPEG Audio Encoder **************************
+
+                     (C) Copyright Fraunhofer IIS (1999)
+                               All Rights Reserved
+
+    Please be advised that this software and/or program delivery is
+    Confidential Information of Fraunhofer and subject to and covered by the
+
+    Fraunhofer IIS Software Evaluation Agreement
+    between Google Inc. and  Fraunhofer
+    effective and in full force since March 1, 2012.
+
+    You may use this software and/or program only under the terms and
+    conditions described in the above mentioned Fraunhofer IIS Software
+    Evaluation Agreement. Any other and/or further use requires a separate agreement.
+
+
+   This software and/or program is protected by copyright law and international
+   treaties. Any reproduction or distribution of this software and/or program,
+   or any portion of it, may result in severe civil and criminal penalties, and
+   will be prosecuted to the maximum extent possible under law.
+
+   $Id$
+   Initial author:       M. Werner
+   contents/description: MDCT Transform
+
+******************************************************************************/
+#ifndef _TRANSFORM_H
+#define _TRANSFORM_H
+
+#include "common_fix.h"
+
+#define WTS0 1
+#define WTS1 0
+#define WTS2 -2
+
+/**
+ * \brief: Performe MDCT transform of time domain data.
+ * \param timeData pointer to time domain input signal.
+ * \param mdctData pointer to store frequency domain output data.
+ * \param blockType index indicating the type of block. Either
+ *        LONG_WINDOW, START_WINDOW, SHORT_WINDOW or STOP_WINDOW.
+ * \param windowShape index indicating the window slope type to be used.
+ *        Values allowed are either SINE_WINDOW or KBD_WINDOW.
+ * \param frameLength length of the block. Either 1024 or 960.
+ * \param mdctData_e pointer to an INT where the exponent of the frequency
+ *        domain output data is stored into.
+ * \return 0 in case of success, non-zero in case of error (inconsistent parameters).
+ */
+INT FDKaacEnc_Transform_Real (const INT_PCM *timeData,
+                              FIXP_DBL *RESTRICT mdctData,
+                              const INT blockType,
+                              const INT windowShape,
+                              INT *prevWindowShape,
+                              const INT frameLength,
+                              INT *mdctData_e,
+                              INT filterType
+                             ,FIXP_DBL * RESTRICT overlapAddBuffer
+                             );
+#endif