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diff --git a/fdk-aac/libSBRenc/src/ton_corr.h b/fdk-aac/libSBRenc/src/ton_corr.h new file mode 100644 index 0000000..91aa278 --- /dev/null +++ b/fdk-aac/libSBRenc/src/ton_corr.h @@ -0,0 +1,258 @@ +/* ----------------------------------------------------------------------------- +Software License for The Fraunhofer FDK AAC Codec Library for Android + +© 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. + +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 +----------------------------------------------------------------------------- */ + +/**************************** SBR encoder library ****************************** + + Author(s): + + Description: + +*******************************************************************************/ + +/*! + \file + \brief General tonality correction detector module. +*/ +#ifndef TON_CORR_H +#define TON_CORR_H + +#include "sbr_encoder.h" +#include "mh_det.h" +#include "nf_est.h" +#include "invf_est.h" + +#define MAX_NUM_PATCHES 6 +#define SCALE_NRGVEC 4 + +/** parameter set for one single patch */ +typedef struct { + INT sourceStartBand; /*!< first band in lowbands where to take the samples + from */ + INT sourceStopBand; /*!< first band in lowbands which is not included in the + patch anymore */ + INT guardStartBand; /*!< first band in highbands to be filled with zeros in + order to reduce interferences between patches */ + INT targetStartBand; /*!< first band in highbands to be filled with whitened + lowband signal */ + INT targetBandOffs; /*!< difference between 'startTargetBand' and + 'startSourceBand' */ + INT numBandsInPatch; /*!< number of consecutive bands in this one patch */ +} PATCH_PARAM; + +typedef struct { + INT switchInverseFilt; /*!< Flag to enable dynamic adaption of invf. detection + */ + INT noQmfChannels; + INT bufferLength; /*!< Length of the r and i buffers. */ + INT stepSize; /*!< Stride for the lpc estimate. */ + INT numberOfEstimates; /*!< The total number of estiamtes, available in the + quotaMatrix.*/ + UINT numberOfEstimatesPerFrame; /*!< The number of estimates per frame + available in the quotaMatrix.*/ + INT lpcLength[2]; /*!< Segment length used for second order LPC analysis.*/ + INT nextSample; /*!< Where to start the LPC analysis of the current frame.*/ + INT move; /*!< How many estimates to move in the quotaMatrix, when buffering. + */ + INT frameStartIndex; /*!< The start index for the current frame in the r and i + buffers. */ + INT startIndexMatrix; /*!< The start index for the current frame in the + quotaMatrix. */ + INT frameStartIndexInvfEst; /*!< The start index of the inverse filtering, not + the same as the others, dependent on what + decoder is used (buffer opt, or no buffer opt). + */ + INT prevTransientFlag; /*!< The transisent flag (from the transient detector) + for the previous frame. */ + INT transientNextFrame; /*!< Flag to indicate that the transient will show up + in the next frame. */ + INT transientPosOffset; /*!< An offset value to match the transient pos as + calculated by the transient detector with the + actual position in the frame.*/ + + INT* signMatrix[MAX_NO_OF_ESTIMATES]; /*!< Matrix holding the sign of each + channe, i.e. indicating in what part + of a QMF channel a possible sine is. + */ + + FIXP_DBL* quotaMatrix[MAX_NO_OF_ESTIMATES]; /*!< Matrix holding the quota + values for all estimates, all + channels. */ + + FIXP_DBL nrgVector[MAX_NO_OF_ESTIMATES]; /*!< Vector holding the averaged + energies for every QMF band. */ + FIXP_DBL nrgVectorFreq[64]; /*!< Vector holding the averaged energies for + every QMF channel */ + + SCHAR indexVector[64]; /*!< Index vector poINTing to the correct lowband + channel, when indexing a highband channel, -1 + represents a guard band */ + PATCH_PARAM + patchParam[MAX_NUM_PATCHES]; /*!< new parameter set for patching */ + INT guard; /*!< number of guardbands between every patch */ + INT shiftStartSb; /*!< lowest subband of source range to be included in the + patches */ + INT noOfPatches; /*!< number of patches */ + + SBR_MISSING_HARMONICS_DETECTOR + sbrMissingHarmonicsDetector; /*!< SBR_MISSING_HARMONICS_DETECTOR struct. + */ + SBR_NOISE_FLOOR_ESTIMATE + sbrNoiseFloorEstimate; /*!< SBR_NOISE_FLOOR_ESTIMATE struct. */ + SBR_INV_FILT_EST sbrInvFilt; /*!< SBR_INV_FILT_EST struct. */ +} SBR_TON_CORR_EST; + +typedef SBR_TON_CORR_EST* HANDLE_SBR_TON_CORR_EST; + +void FDKsbrEnc_TonCorrParamExtr( + HANDLE_SBR_TON_CORR_EST hTonCorr, /*!< Handle to SBR_TON_CORR struct. */ + INVF_MODE* infVec, /*!< Vector where the inverse filtering levels will be + stored. */ + FIXP_DBL* noiseLevels, /*!< Vector where the noise levels will be stored. */ + INT* missingHarmonicFlag, /*!< Flag set to one or zero, dependent on if any + strong sines are missing.*/ + UCHAR* missingHarmonicsIndex, /*!< Vector indicating where sines are + missing. */ + UCHAR* envelopeCompensation, /*!< Vector to store compensation values for + the energies in. */ + const SBR_FRAME_INFO* frameInfo, /*!< Frame info struct, contains the time + and frequency grid of the current + frame.*/ + UCHAR* transientInfo, /*!< Transient info.*/ + UCHAR* freqBandTable, /*!< Frequency band tables for high-res.*/ + INT nSfb, /*!< Number of scalefactor bands for high-res. */ + XPOS_MODE xposType, /*!< Type of transposer used in the decoder.*/ + UINT sbrSyntaxFlags); + +INT FDKsbrEnc_CreateTonCorrParamExtr( + HANDLE_SBR_TON_CORR_EST + hTonCorr, /*!< Pointer to handle to SBR_TON_CORR struct. */ + INT chan); /*!< Channel index, needed for mem allocation */ + +INT FDKsbrEnc_InitTonCorrParamExtr( + INT frameSize, /*!< Current SBR frame size. */ + HANDLE_SBR_TON_CORR_EST + hTonCorr, /*!< Pointer to handle to SBR_TON_CORR struct. */ + HANDLE_SBR_CONFIG_DATA + sbrCfg, /*!< Pointer to SBR configuration parameters. */ + INT timeSlots, /*!< Number of time-slots per frame */ + INT xposCtrl, /*!< Different patch modes. */ + INT ana_max_level, /*!< Maximum level of the adaptive noise. */ + INT noiseBands, /*!< Number of noise bands per octave. */ + INT noiseFloorOffset, /*!< Noise floor offset. */ + UINT useSpeechConfig /*!< Speech or music tuning. */ +); + +void FDKsbrEnc_DeleteTonCorrParamExtr( + HANDLE_SBR_TON_CORR_EST hTonCorr); /*!< Handle to SBR_TON_CORR struct. */ + +void FDKsbrEnc_CalculateTonalityQuotas( + HANDLE_SBR_TON_CORR_EST hTonCorr, FIXP_DBL** sourceBufferReal, + FIXP_DBL** sourceBufferImag, INT usb, + INT qmfScale /*!< sclefactor of QMF subsamples */ +); + +INT FDKsbrEnc_ResetTonCorrParamExtr( + HANDLE_SBR_TON_CORR_EST hTonCorr, /*!< Handle to SBR_TON_CORR struct. */ + INT xposctrl, /*!< Different patch modes. */ + INT highBandStartSb, /*!< Start band of the SBR range. */ + UCHAR* v_k_master, /*!< Master frequency table from which all other table + are derived.*/ + INT numMaster, /*!< Number of elements in the master table. */ + INT fs, /*!< Sampling frequency (of the SBR part). */ + UCHAR** + freqBandTable, /*!< Frequency band table for low-res and high-res. */ + INT* nSfb, /*!< Number of frequency bands (hig-res and low-res). */ + INT noQmfChannels /*!< Number of QMF channels. */ +); +#endif |