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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
+----------------------------------------------------------------------------------------------------------- */
+
+/*!
+  \file
+  \brief  missing harmonics detection header file  
+*/
+
+#ifndef __MH_DETECT_H
+#define __MH_DETECT_H
+
+#include "sbr_encoder.h"
+#include "fram_gen.h"
+
+typedef struct
+{
+  FIXP_DBL thresHoldDiff;      /*!< threshold for tonality difference */
+  FIXP_DBL thresHoldDiffGuide; /*!< threshold for tonality difference for the guide */
+  FIXP_DBL thresHoldTone;      /*!< threshold for tonality for a sine */
+  FIXP_DBL invThresHoldTone;
+  FIXP_DBL thresHoldToneGuide; /*!< threshold for tonality for a sine for the guide */
+  FIXP_DBL sfmThresSbr;        /*!< tonality flatness measure threshold for the SBR signal.*/
+  FIXP_DBL sfmThresOrig;       /*!< tonality flatness measure threshold for the original signal.*/
+  FIXP_DBL decayGuideOrig;     /*!< decay value of the tonality value of the guide for the tone. */
+  FIXP_DBL decayGuideDiff;     /*!< decay value of the tonality value of the guide for the tonality difference. */
+  FIXP_DBL derivThresMaxLD64;      /*!< threshold for detecting LP character in a signal. */
+  FIXP_DBL derivThresBelowLD64;    /*!< threshold for detecting LP character in a signal. */
+  FIXP_DBL derivThresAboveLD64;    /*!< threshold for detecting LP character in a signal. */
+}THRES_HOLDS;
+
+typedef struct
+{
+  INT deltaTime;            /*!< maximum allowed transient distance (from frame border in number of qmf subband sample)
+                                 for a frame to be considered a transient frame.*/
+  THRES_HOLDS thresHolds;   /*!< the thresholds used for detection. */
+  INT maxComp;              /*!< maximum alllowed compensation factor for the envelope data. */
+}DETECTOR_PARAMETERS_MH;
+
+typedef struct
+{
+  FIXP_DBL *guideVectorDiff;
+  FIXP_DBL *guideVectorOrig;
+  UCHAR* guideVectorDetected;
+}GUIDE_VECTORS;
+
+
+typedef struct
+{
+  INT qmfNoChannels;
+  INT nSfb;
+  INT sampleFreq;
+  INT previousTransientFlag;
+  INT previousTransientFrame;
+  INT previousTransientPos;
+
+  INT noVecPerFrame;
+  INT transientPosOffset;
+
+  INT move;
+  INT totNoEst;
+  INT noEstPerFrame;
+  INT timeSlots;
+
+  UCHAR *guideScfb;
+  UCHAR *prevEnvelopeCompensation;
+  UCHAR *detectionVectors[MAX_NO_OF_ESTIMATES];
+  FIXP_DBL tonalityDiff[MAX_NO_OF_ESTIMATES/2][MAX_FREQ_COEFFS];
+  FIXP_DBL sfmOrig[MAX_NO_OF_ESTIMATES/2][MAX_FREQ_COEFFS];
+  FIXP_DBL sfmSbr[MAX_NO_OF_ESTIMATES/2][MAX_FREQ_COEFFS];
+  const DETECTOR_PARAMETERS_MH *mhParams;
+  GUIDE_VECTORS guideVectors[MAX_NO_OF_ESTIMATES];
+}
+SBR_MISSING_HARMONICS_DETECTOR;
+
+typedef SBR_MISSING_HARMONICS_DETECTOR *HANDLE_SBR_MISSING_HARMONICS_DETECTOR;
+
+void
+FDKsbrEnc_SbrMissingHarmonicsDetectorQmf(HANDLE_SBR_MISSING_HARMONICS_DETECTOR h_sbrMissingHarmonicsDetector,
+                               FIXP_DBL ** pQuotaBuffer,
+                               INT ** pSignBuffer,
+                               SCHAR *indexVector,
+                               const SBR_FRAME_INFO *pFrameInfo,
+                               const UCHAR* pTranInfo,
+                               INT* pAddHarmonicsFlag,
+                               UCHAR* pAddHarmonicsScaleFactorBands,
+                               const UCHAR* freqBandTable,
+                               INT nSfb,
+                               UCHAR * envelopeCompensation,
+                               FIXP_DBL *pNrgVector);
+
+INT
+FDKsbrEnc_CreateSbrMissingHarmonicsDetector (
+                                   HANDLE_SBR_MISSING_HARMONICS_DETECTOR hSbrMHDet,
+                                   INT chan);
+
+INT
+FDKsbrEnc_InitSbrMissingHarmonicsDetector(
+                                  HANDLE_SBR_MISSING_HARMONICS_DETECTOR h_sbrMissingHarmonicsDetector,
+                                  INT sampleFreq,
+                                  INT frameSize,
+                                  INT nSfb,
+                                  INT qmfNoChannels,
+                                  INT totNoEst,
+                                  INT move,
+                                  INT noEstPerFrame,
+                                  UINT sbrSyntaxFlags);
+
+void
+FDKsbrEnc_DeleteSbrMissingHarmonicsDetector (HANDLE_SBR_MISSING_HARMONICS_DETECTOR h_sbrMissingHarmonicsDetector);
+
+
+INT
+FDKsbrEnc_ResetSbrMissingHarmonicsDetector (HANDLE_SBR_MISSING_HARMONICS_DETECTOR hSbrMissingHarmonicsDetector,
+                                   INT nSfb);
+
+#endif