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+
+/* -----------------------------------------------------------------------------------------------------------
+Software License for The Fraunhofer FDK AAC Codec Library for Android
+
+© Copyright  1995 - 2012 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+  All rights reserved.
+
+ 1.    INTRODUCTION
+The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
+the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
+This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
+
+AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
+audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
+independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
+of the MPEG specifications.
+
+Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
+may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
+individually for the purpose of encoding or decoding bit streams in products that are compliant with
+the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
+these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
+software may already be covered under those patent licenses when it is used for those licensed purposes only.
+
+Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
+are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
+applications information and documentation.
+
+2.    COPYRIGHT LICENSE
+
+Redistribution and use in source and binary forms, with or without modification, are permitted without
+payment of copyright license fees provided that you satisfy the following conditions:
+
+You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
+your modifications thereto in source code form.
+
+You must retain the complete text of this software license in the documentation and/or other materials
+provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
+You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
+modifications thereto to recipients of copies in binary form.
+
+The name of Fraunhofer may not be used to endorse or promote products derived from this library without
+prior written permission.
+
+You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
+software or your modifications thereto.
+
+Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
+and the date of any change. For modified versions of the FDK AAC Codec, the term
+"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
+"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
+
+3.    NO PATENT LICENSE
+
+NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
+ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
+respect to this software.
+
+You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
+by appropriate patent licenses.
+
+4.    DISCLAIMER
+
+This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
+"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
+of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
+including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
+or business interruption, however caused and on any theory of liability, whether in contract, strict
+liability, or tort (including negligence), arising in any way out of the use of this software, even if
+advised of the possibility of such damage.
+
+5.    CONTACT INFORMATION
+
+Fraunhofer Institute for Integrated Circuits IIS
+Attention: Audio and Multimedia Departments - FDK AAC LL
+Am Wolfsmantel 33
+91058 Erlangen, Germany
+
+www.iis.fraunhofer.de/amm
+amm-info@iis.fraunhofer.de
+----------------------------------------------------------------------------------------------------------- */
+
+#ifndef __HYBRID_H
+#define __HYBRID_H
+
+#include "sbrdecoder.h"
+
+
+#define HYBRID_FILTER_LENGTH  13
+#define HYBRID_FILTER_DELAY    6
+
+
+#define FAST_FILTER2
+#define FAST_FILTER4
+#define FAST_FILTER8
+#define FAST_FILTER12
+
+#define FFT_IDX_R(a)  (2*a)
+#define FFT_IDX_I(a)  (2*a+1)
+
+#define FIXP_FFT_IDX_R(a)   (a<<1)
+#define FIXP_FFT_IDX_I(a)  ((a<<1) + 1)
+
+
+typedef enum {
+
+  HYBRID_2_REAL     = 2,
+  HYBRID_4_CPLX     = 4,
+  HYBRID_8_CPLX     = 8,
+  HYBRID_12_CPLX    = 12
+
+} HYBRID_RES;
+
+typedef struct
+{
+  SCHAR   nQmfBands;
+  SCHAR   frameSize;
+  SCHAR   qmfBufferMove;
+
+  UCHAR   pResolution[3];
+
+  FIXP_DBL mQmfBufferRealSlot[3][HYBRID_FILTER_LENGTH];   /**< Stores old Qmf samples. */
+  FIXP_DBL mQmfBufferImagSlot[3][HYBRID_FILTER_LENGTH];
+  SCHAR sf_mQmfBuffer;
+
+} HYBRID;
+
+typedef HYBRID *HANDLE_HYBRID;
+
+void
+fillHybridDelayLine( FIXP_DBL **fixpQmfReal,
+                     FIXP_DBL **fixpQmfImag,
+                     FIXP_DBL   fixpHybridLeftR[12],
+                     FIXP_DBL   fixpHybridLeftI[12],
+                     FIXP_DBL   fixpHybridRightR[12],
+                     FIXP_DBL   fixpHybridRightI[12],
+                     HANDLE_HYBRID hHybrid );
+
+void
+slotBasedHybridAnalysis ( FIXP_DBL *fixpQmfReal,
+                          FIXP_DBL *fixpQmfImag,
+
+                          FIXP_DBL  *fixpHybridReal,
+                          FIXP_DBL  *fixpHybridImag,
+
+                          HANDLE_HYBRID hHybrid);
+
+
+void
+slotBasedHybridSynthesis ( FIXP_DBL  *fixpHybridReal,
+                           FIXP_DBL  *fixpHybridImag,
+
+                           FIXP_DBL  *fixpQmfReal,
+                           FIXP_DBL  *fixpQmfImag,
+
+                           HANDLE_HYBRID hHybrid );
+
+SBR_ERROR InitHybridFilterBank ( HANDLE_HYBRID  hHybrid,
+                                 SCHAR frameSize,
+                                 SCHAR noBands,
+                                 const UCHAR *pResolution );
+
+
+#endif /* __HYBRID_H */