diff options
Diffstat (limited to 'libSBRenc/src/mh_det.h')
| -rw-r--r-- | libSBRenc/src/mh_det.h | 260 |
1 files changed, 134 insertions, 126 deletions
diff --git a/libSBRenc/src/mh_det.h b/libSBRenc/src/mh_det.h index 74c2a99..89d81b5 100644 --- a/libSBRenc/src/mh_det.h +++ b/libSBRenc/src/mh_det.h @@ -1,74 +1,85 @@ - -/* ----------------------------------------------------------------------------------------------------------- +/* ----------------------------------------------------------------------------- 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. +© Copyright 1995 - 2018 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. +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: +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 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 +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. +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. +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." +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. +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. +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. +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 @@ -79,53 +90,67 @@ Am Wolfsmantel 33 www.iis.fraunhofer.de/amm amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ +----------------------------------------------------------------------------- */ + +/**************************** SBR encoder library ****************************** + + Author(s): + + Description: + +*******************************************************************************/ /*! \file - \brief missing harmonics detection header file + \brief missing harmonics detection header file $Revision: 92790 $ */ -#ifndef __MH_DETECT_H -#define __MH_DETECT_H +#ifndef MH_DET_H +#define MH_DET_H #include "sbr_encoder.h" #include "fram_gen.h" -typedef struct -{ +typedef struct { FIXP_DBL thresHoldDiff; /*!< threshold for tonality difference */ - FIXP_DBL thresHoldDiffGuide; /*!< threshold for tonality difference for the guide */ + 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 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; + UCHAR *guideVectorDetected; +} GUIDE_VECTORS; - -typedef struct -{ +typedef struct { INT qmfNoChannels; INT nSfb; INT sampleFreq; @@ -144,53 +169,36 @@ typedef struct 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]; + 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; +} 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); +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 |