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authorDave Burke <daveburke@google.com>2012-04-17 09:51:45 -0700
committerDave Burke <daveburke@google.com>2012-04-17 23:04:43 -0700
commit9bf37cc9712506b2483650c82d3c41152337ef7e (patch)
tree77db44e2bae06e3d144b255628be2b7a55c581d3 /libSBRenc/src/ton_corr.h
parenta37315fe10ee143d6d0b28c19d41a476a23e63ea (diff)
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Fraunhofer AAC codec.
License boilerplate update to follow. Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5
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+/****************************************************************************
+
+ (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
+