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-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 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
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