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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/mh_det.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.
+
+ $Id$
+
+*******************************************************************************/
+/*!
+ \file
+ \brief missing harmonics detection header file $Revision: 36847 $
+*/
+
+#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