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Diffstat (limited to 'libSBRenc/src/ton_corr.h')
| -rw-r--r-- | libSBRenc/src/ton_corr.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/libSBRenc/src/ton_corr.h b/libSBRenc/src/ton_corr.h new file mode 100644 index 0000000..c4e9be0 --- /dev/null +++ b/libSBRenc/src/ton_corr.h @@ -0,0 +1,154 @@ +/**************************************************************************** + + (C) copyright Fraunhofer-IIS (2004) + All Rights Reserved + + Please be advised that this software and/or program delivery is + Confidential Information of Fraunhofer and subject to and covered by the + + Fraunhofer IIS Software Evaluation Agreement + between Google Inc. and Fraunhofer + effective and in full force since March 1, 2012. + + You may use this software and/or program only under the terms and + conditions described in the above mentioned Fraunhofer IIS Software + Evaluation Agreement. Any other and/or further use requires a separate agreement. + + + This software and/or program is protected by copyright law and international + treaties. Any reproduction or distribution of this software and/or program, + or any portion of it, may result in severe civil and criminal penalties, and + will be prosecuted to the maximum extent possible under law. + + $Header$ + +*******************************************************************************/ +/*! + \file + \brief General tonality correction detector module. +*/ +#ifndef _TON_CORR_EST_H +#define _TON_CORR_EST_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.*/ + INT 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[QMF_CHANNELS]; /*!< Vector holding the averaged energies for every QMF channel */ + + SCHAR indexVector[QMF_CHANNELS]; /*!< 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 + |