Fraunhofer AAC codec.

License boilerplate update to follow.

Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5

1 files changed, 138 insertions, 0 deletions

diff --git a/libSBRenc/src/mh_det.h b/libSBRenc/src/mh_det.h
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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