12228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 22228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* ----------------------------------------------------------------------------------------------------------- 32228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSoftware License for The Fraunhofer FDK AAC Codec Library for Android 42228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 54f0d97057c5c640b25518358886f8c47da9fc052Jean-Michel Trivi� Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur F�rderung der angewandten Forschung e.V. 62228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project All rights reserved. 72228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 82228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1. INTRODUCTION 92228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 112228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is intended to be used on a wide variety of Android devices. 122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 132228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectaudio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindependent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof the MPEG specifications. 172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 182228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectPatent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmay be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindividually for the purpose of encoding or decoding bit streams in products that are compliant with 212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthese patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware may already be covered under those patent licenses when it is used for those licensed purposes only. 242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 252228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCommercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectare also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectapplications information and documentation. 282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project2. COPYRIGHT LICENSE 302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 312228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectRedistribution and use in source and binary forms, with or without modification, are permitted without 322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectpayment of copyright license fees provided that you satisfy the following conditions: 332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 342228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in redistributions of the FDK AAC Codec or 352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectyour modifications thereto in source code form. 362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 372228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in the documentation and/or other materials 382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprovided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 392228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must make available free of charge copies of the complete source code of the FDK AAC Codec and your 402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmodifications thereto to recipients of copies in binary form. 412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 422228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe name of Fraunhofer may not be used to endorse or promote products derived from this library without 432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprior written permission. 442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 452228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware or your modifications thereto. 472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 482228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYour modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectand the date of any change. For modified versions of the FDK AAC Codec, the term 502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term 512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." 522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project3. NO PATENT LICENSE 542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 552228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectNO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 562228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectrespect to this software. 582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 592228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectby appropriate patent licenses. 612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project4. DISCLAIMER 632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 642228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors 652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties 662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 672228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectincluding but not limited to procurement of substitute goods or services; loss of use, data, or profits, 692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projector business interruption, however caused and on any theory of liability, whether in contract, strict 702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectliability, or tort (including negligence), arising in any way out of the use of this software, even if 712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectadvised of the possibility of such damage. 722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project5. CONTACT INFORMATION 742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 752228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFraunhofer Institute for Integrated Circuits IIS 762228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAttention: Audio and Multimedia Departments - FDK AAC LL 772228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAm Wolfsmantel 33 782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project91058 Erlangen, Germany 792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectwww.iis.fraunhofer.de/amm 812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectamm-info@iis.fraunhofer.de 822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------------------- */ 832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "invf_est.h" 852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "sbr_misc.h" 862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "genericStds.h" 882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#define MAX_NUM_REGIONS 10 902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#define SCALE_FAC_QUO 512.0f 912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#define SCALE_FAC_NRG 256.0f 922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#ifndef min 942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#define min(a,b) ( a < b ? a:b) 952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#ifndef max 982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#define max(a,b) ( a > b ? a:b) 992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 1002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIXP_DBL quantStepsSbr[4] = { 0x00400000, 0x02800000, 0x03800000, 0x04c00000 } ; /* table scaled with SCALE_FAC_QUO */ 1022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIXP_DBL quantStepsOrig[4] = { 0x00000000, 0x00c00000, 0x01c00000, 0x02800000 } ; /* table scaled with SCALE_FAC_QUO */ 1032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIXP_DBL nrgBorders[4] = { 0x0c800000, 0x0f000000, 0x11800000, 0x14000000 } ; /* table scaled with SCALE_FAC_NRG */ 1042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const DETECTOR_PARAMETERS detectorParamsAAC = { 1062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantStepsSbr, 1072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantStepsOrig, 1082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project nrgBorders, 1092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4, /* Number of borders SBR. */ 1102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4, /* Number of borders orig. */ 1112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4, /* Number of borders Nrg. */ 1122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { /* Region space. */ 1132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_MID_LEVEL, INVF_LOW_LEVEL, INVF_OFF, INVF_OFF, INVF_OFF}, /* | */ 1142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_MID_LEVEL, INVF_LOW_LEVEL, INVF_OFF, INVF_OFF, INVF_OFF}, /* | */ 1152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_LOW_LEVEL, INVF_OFF, INVF_OFF}, /* regionSbr */ 1162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_OFF, INVF_OFF}, /* | */ 1172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_OFF, INVF_OFF} /* | */ 1182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project },/*------------------------ regionOrig ---------------------------------*/ 1192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { /* Region space transient. */ 1202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_LOW_LEVEL, INVF_LOW_LEVEL, INVF_LOW_LEVEL, INVF_OFF, INVF_OFF}, /* | */ 1212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_LOW_LEVEL, INVF_LOW_LEVEL, INVF_LOW_LEVEL, INVF_OFF, INVF_OFF}, /* | */ 1222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_MID_LEVEL, INVF_OFF, INVF_OFF}, /* regionSbr */ 1232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_OFF, INVF_OFF}, /* | */ 1242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_OFF, INVF_OFF} /* | */ 1252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project },/*------------------------ regionOrig ---------------------------------*/ 1262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {-4, -3, -2, -1, 0} /* Reduction factor of the inverse filtering for low energies.*/ 1272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}; 1282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIXP_DBL hysteresis = 0x00400000 ; /* Delta value for hysteresis. scaled with SCALE_FAC_QUO */ 1302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 1322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * AAC+SBR PARAMETERS for Speech 1332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *********************************/ 1342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const DETECTOR_PARAMETERS detectorParamsAACSpeech = { 1352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantStepsSbr, 1362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantStepsOrig, 1372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project nrgBorders, 1382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4, /* Number of borders SBR. */ 1392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4, /* Number of borders orig. */ 1402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4, /* Number of borders Nrg. */ 1412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { /* Region space. */ 1422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_MID_LEVEL, INVF_MID_LEVEL, INVF_LOW_LEVEL, INVF_OFF, INVF_OFF}, /* | */ 1432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_MID_LEVEL, INVF_MID_LEVEL, INVF_LOW_LEVEL, INVF_OFF, INVF_OFF}, /* | */ 1442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_MID_LEVEL, INVF_OFF, INVF_OFF}, /* regionSbr */ 1452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_OFF, INVF_OFF}, /* | */ 1462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_OFF, INVF_OFF} /* | */ 1472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project },/*------------------------ regionOrig ---------------------------------*/ 1482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { /* Region space transient. */ 1492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_MID_LEVEL, INVF_MID_LEVEL, INVF_LOW_LEVEL, INVF_OFF, INVF_OFF}, /* | */ 1502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_MID_LEVEL, INVF_MID_LEVEL, INVF_LOW_LEVEL, INVF_OFF, INVF_OFF}, /* | */ 1512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_MID_LEVEL, INVF_OFF, INVF_OFF}, /* regionSbr */ 1522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_OFF, INVF_OFF}, /* | */ 1532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {INVF_HIGH_LEVEL, INVF_HIGH_LEVEL, INVF_MID_LEVEL, INVF_OFF, INVF_OFF} /* | */ 1542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project },/*------------------------ regionOrig ---------------------------------*/ 1552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project {-4, -3, -2, -1, 0} /* Reduction factor of the inverse filtering for low energies.*/ 1562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}; 1572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 1592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * Smoothing filters. 1602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ************************/ 1612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projecttypedef const FIXP_DBL FIR_FILTER[5]; 1622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIR_FILTER fir_0 = { 0x7fffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000 } ; 1642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIR_FILTER fir_1 = { 0x2aaaaa80, 0x555554ff, 0x00000000, 0x00000000, 0x00000000 } ; 1652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIR_FILTER fir_2 = { 0x10000000, 0x30000000, 0x40000000, 0x00000000, 0x00000000 } ; 1662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIR_FILTER fir_3 = { 0x077f80e8, 0x199999a0, 0x2bb3b240, 0x33333340, 0x00000000 } ; 1672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIR_FILTER fir_4 = { 0x04130598, 0x0ebdb000, 0x1becfa60, 0x2697a4c0, 0x2aaaaa80 } ; 1682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIR_FILTER *const fir_table[5] = { 1712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &fir_0, 1722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &fir_1, 1732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &fir_2, 1742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &fir_3, 1752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &fir_4 1762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}; 1772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 1792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 1802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Calculates the values used for the detector. 1812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return none 1842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 1862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 1872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void 1882228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectcalculateDetectorValues(FIXP_DBL **quotaMatrixOrig, /*!< Matrix holding the tonality values of the original. */ 1892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SCHAR *indexVector, /*!< Index vector to obtain the patched data. */ 1902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *nrgVector, /*!< Energy vector. */ 1912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project DETECTOR_VALUES *detectorValues, /*!< pointer to DETECTOR_VALUES struct. */ 1922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT startChannel, /*!< Start channel. */ 1932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT stopChannel, /*!< Stop channel. */ 1942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT startIndex, /*!< Start index. */ 1952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT stopIndex, /*!< Stop index. */ 1962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT numberOfStrongest /*!< The number of sorted tonal components to be considered. */ 1972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 1982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i,temp, j; 2002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const FIXP_DBL* filter = *fir_table[INVF_SMOOTHING_LENGTH]; 2022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL origQuotaMeanStrongest, sbrQuotaMeanStrongest; 2032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL origQuota, sbrQuota; 2042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL invIndex, invChannel, invTemp; 2052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL quotaVecOrig[64], quotaVecSbr[64]; 2062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(quotaVecOrig,64*sizeof(FIXP_DBL)); 2082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(quotaVecSbr,64*sizeof(FIXP_DBL)); 2092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project invIndex = GetInvInt(stopIndex-startIndex); 2112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project invChannel = GetInvInt(stopChannel-startChannel); 2122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 2142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Calculate the mean value, over the current time segment, for the original, the HFR 2152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project and the difference, over all channels in the current frequency range. 2162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project NOTE: the averaging is done on the values quota/(1 - quota + RELAXATION). 2172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 2182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* The original, the sbr signal and the total energy */ 2202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->avgNrg = FL2FXCONST_DBL(0.0f); 2212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(j=startIndex; j<stopIndex; j++) { 2222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=startChannel; i<stopChannel; i++) { 2232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quotaVecOrig[i] += fMult(quotaMatrixOrig[j][i], invIndex); 2242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(indexVector[i] != -1) 2262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quotaVecSbr[i] += fMult(quotaMatrixOrig[j][indexVector[i]], invIndex); 2272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->avgNrg += fMult(nrgVector[j], invIndex); 2292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 2322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Calculate the mean value, over the current frequency range, for the original, the HFR 2332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project and the difference. Also calculate the same mean values for the three vectors, but only 2342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project includeing the x strongest copmponents. 2352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 2362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project origQuota = FL2FXCONST_DBL(0.0f); 2382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrQuota = FL2FXCONST_DBL(0.0f); 2392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=startChannel; i<stopChannel; i++) { 2402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project origQuota += fMultDiv2(quotaVecOrig[i], invChannel); 2412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrQuota += fMultDiv2(quotaVecSbr[i], invChannel); 2422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 2452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Calculate the mean value for the x strongest components 2462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 2472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKsbrEnc_Shellsort_fract(quotaVecOrig+startChannel,stopChannel-startChannel); 2482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKsbrEnc_Shellsort_fract(quotaVecSbr+startChannel,stopChannel-startChannel); 2492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project origQuotaMeanStrongest = FL2FXCONST_DBL(0.0f); 2512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrQuotaMeanStrongest = FL2FXCONST_DBL(0.0f); 2522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project temp = min(stopChannel - startChannel, numberOfStrongest); 2542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project invTemp = GetInvInt(temp); 2552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=0; i<temp; i++) { 2572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project origQuotaMeanStrongest += fMultDiv2(quotaVecOrig[i + stopChannel - temp], invTemp); 2582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrQuotaMeanStrongest += fMultDiv2(quotaVecSbr[i + stopChannel - temp], invTemp); 2592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 2622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project The value for the strongest component 2632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 2642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->origQuotaMax = quotaVecOrig[stopChannel - 1]; 2652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->sbrQuotaMax = quotaVecSbr[stopChannel - 1]; 2662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 2682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Buffer values 2692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 2702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemmove(detectorValues->origQuotaMean, detectorValues->origQuotaMean + 1, INVF_SMOOTHING_LENGTH*sizeof(FIXP_DBL)); 2712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemmove(detectorValues->sbrQuotaMean, detectorValues->sbrQuotaMean + 1, INVF_SMOOTHING_LENGTH*sizeof(FIXP_DBL)); 2722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemmove(detectorValues->origQuotaMeanStrongest, detectorValues->origQuotaMeanStrongest + 1, INVF_SMOOTHING_LENGTH*sizeof(FIXP_DBL)); 2732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemmove(detectorValues->sbrQuotaMeanStrongest, detectorValues->sbrQuotaMeanStrongest + 1, INVF_SMOOTHING_LENGTH*sizeof(FIXP_DBL)); 2742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->origQuotaMean[INVF_SMOOTHING_LENGTH] = origQuota<<1; 2762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->sbrQuotaMean[INVF_SMOOTHING_LENGTH] = sbrQuota<<1; 2772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->origQuotaMeanStrongest[INVF_SMOOTHING_LENGTH] = origQuotaMeanStrongest<<1; 2782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->sbrQuotaMeanStrongest[INVF_SMOOTHING_LENGTH] = sbrQuotaMeanStrongest<<1; 2792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 2812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Filter values 2822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 2832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->origQuotaMeanFilt = FL2FXCONST_DBL(0.0f); 2842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->sbrQuotaMeanFilt = FL2FXCONST_DBL(0.0f); 2852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->origQuotaMeanStrongestFilt = FL2FXCONST_DBL(0.0f); 2862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->sbrQuotaMeanStrongestFilt = FL2FXCONST_DBL(0.0f); 2872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=0;i<INVF_SMOOTHING_LENGTH+1;i++) { 2892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->origQuotaMeanFilt += fMult(detectorValues->origQuotaMean[i], filter[i]); 2902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->sbrQuotaMeanFilt += fMult(detectorValues->sbrQuotaMean[i], filter[i]); 2912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->origQuotaMeanStrongestFilt += fMult(detectorValues->origQuotaMeanStrongest[i], filter[i]); 2922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project detectorValues->sbrQuotaMeanStrongestFilt += fMult(detectorValues->sbrQuotaMeanStrongest[i], filter[i]); 2932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 2972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 2982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Returns the region in which the input value belongs. 2992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return region. 3032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 3052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 3062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT 3072228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectfindRegion(FIXP_DBL currVal, /*!< The current value. */ 3082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const FIXP_DBL *borders, /*!< The border of the regions. */ 3092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT numBorders /*!< The number of borders. */ 3102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 3112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i; 3132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(currVal < borders[0]){ 3152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return 0; 3162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i = 1; i < numBorders; i++){ 3192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if( currVal >= borders[i-1] && currVal < borders[i]){ 3202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return i; 3212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(currVal >= borders[numBorders-1]){ 3252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return numBorders; 3262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return 0; /* We never get here, it's just to avoid compiler warnings.*/ 3292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 3302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 3322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 3332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Makes a clever decision based on the quota vector. 3342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return decision on which invf mode to use 3372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 3392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 3402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INVF_MODE 3412228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectdecisionAlgorithm(const DETECTOR_PARAMETERS *detectorParams, /*!< Struct with the detector parameters. */ 3422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project DETECTOR_VALUES *detectorValues, /*!< Struct with the detector values. */ 3432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT transientFlag, /*!< Flag indicating if there is a transient present.*/ 3442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT* prevRegionSbr, /*!< The previous region in which the Sbr value was. */ 3452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT* prevRegionOrig /*!< The previous region in which the Orig value was. */ 3462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 3472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT invFiltLevel, regionSbr, regionOrig, regionNrg; 3492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 3512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Current thresholds. 3522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 3532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const FIXP_DBL *quantStepsSbr = detectorParams->quantStepsSbr; 3542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const FIXP_DBL *quantStepsOrig = detectorParams->quantStepsOrig; 3552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const FIXP_DBL *nrgBorders = detectorParams->nrgBorders; 3562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT numRegionsSbr = detectorParams->numRegionsSbr; 3572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT numRegionsOrig = detectorParams->numRegionsOrig; 3582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT numRegionsNrg = detectorParams->numRegionsNrg; 3592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL quantStepsSbrTmp[MAX_NUM_REGIONS]; 3612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL quantStepsOrigTmp[MAX_NUM_REGIONS]; 3622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 3642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Current detector values. 3652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 3662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL origQuotaMeanFilt; 3672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sbrQuotaMeanFilt; 3682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL nrg; 3692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 0.375 = 3.0 / 8.0; 0.31143075889 = log2(RELAXATION)/64.0; 0.625 = log(16)/64.0; 0.6875 = 44/64.0 */ 3712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project origQuotaMeanFilt = (fMultDiv2(FL2FXCONST_DBL(2.f*0.375f), (FIXP_DBL)(CalcLdData(max(detectorValues->origQuotaMeanFilt,(FIXP_DBL)1)) + FL2FXCONST_DBL(0.31143075889f)))) << 0; /* scaled by 1/2^9 */ 3722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrQuotaMeanFilt = (fMultDiv2(FL2FXCONST_DBL(2.f*0.375f), (FIXP_DBL)(CalcLdData(max(detectorValues->sbrQuotaMeanFilt,(FIXP_DBL)1)) + FL2FXCONST_DBL(0.31143075889f)))) << 0; /* scaled by 1/2^9 */ 3732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* If energy is zero then we will get different results for different word lengths. */ 3742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project nrg = (fMultDiv2(FL2FXCONST_DBL(2.f*0.375f), (FIXP_DBL)(CalcLdData(detectorValues->avgNrg+(FIXP_DBL)1) + FL2FXCONST_DBL(0.0625f) + FL2FXCONST_DBL(0.6875f)))) << 0; /* scaled by 1/2^8; 2^44 -> qmf energy scale */ 3752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy(quantStepsSbrTmp,quantStepsSbr,numRegionsSbr*sizeof(FIXP_DBL)); 3772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy(quantStepsOrigTmp,quantStepsOrig,numRegionsOrig*sizeof(FIXP_DBL)); 3782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(*prevRegionSbr < numRegionsSbr) 3802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantStepsSbrTmp[*prevRegionSbr] = quantStepsSbr[*prevRegionSbr] + hysteresis; 3812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(*prevRegionSbr > 0) 3822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantStepsSbrTmp[*prevRegionSbr - 1] = quantStepsSbr[*prevRegionSbr - 1] - hysteresis; 3832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(*prevRegionOrig < numRegionsOrig) 3852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantStepsOrigTmp[*prevRegionOrig] = quantStepsOrig[*prevRegionOrig] + hysteresis; 3862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(*prevRegionOrig > 0) 3872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantStepsOrigTmp[*prevRegionOrig - 1] = quantStepsOrig[*prevRegionOrig - 1] - hysteresis; 3882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project regionSbr = findRegion(sbrQuotaMeanFilt, quantStepsSbrTmp, numRegionsSbr); 3902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project regionOrig = findRegion(origQuotaMeanFilt, quantStepsOrigTmp, numRegionsOrig); 3912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project regionNrg = findRegion(nrg,nrgBorders,numRegionsNrg); 3922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *prevRegionSbr = regionSbr; 3942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *prevRegionOrig = regionOrig; 3952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Use different settings if a transient is present*/ 3972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project invFiltLevel = (transientFlag == 1) ? detectorParams->regionSpaceTransient[regionSbr][regionOrig] 3982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project : detectorParams->regionSpace[regionSbr][regionOrig]; 3992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Compensate for low energy.*/ 4012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project invFiltLevel = max(invFiltLevel + detectorParams->EnergyCompFactor[regionNrg],0); 4022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (INVF_MODE) (invFiltLevel); 4042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 4052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 4072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 4082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Estiamtion of the inverse filtering level required 4092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project in the decoder. 4102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project A second order LPC is calculated for every filterbank channel, using 4122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project the covariance method. THe ratio between the energy of the predicted 4132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project signal and the energy of the non-predictable signal is calcualted. 4142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return none. 4162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 4182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 4192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid 4202228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKsbrEnc_qmfInverseFilteringDetector(HANDLE_SBR_INV_FILT_EST hInvFilt, /*!< Handle to the SBR_INV_FILT_EST struct. */ 4212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL **quotaMatrix, /*!< The matrix holding the tonality values of the original. */ 4222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *nrgVector, /*!< The energy vector. */ 4232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SCHAR *indexVector, /*!< Index vector to obtain the patched data. */ 4242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT startIndex, /*!< Start index. */ 4252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT stopIndex, /*!< Stop index. */ 4262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT transientFlag, /*!< Flag indicating if a transient is present or not.*/ 4272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INVF_MODE* infVec /*!< Vector holding the inverse filtering levels. */ 4282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 4292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 4302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT band; 4312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * Do the inverse filtering level estimation. 4342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *****************************************************/ 4352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(band = 0 ; band < hInvFilt->noDetectorBands; band++){ 4362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT startChannel = hInvFilt->freqBandTableInvFilt[band]; 4372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT stopChannel = hInvFilt->freqBandTableInvFilt[band+1]; 4382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project calculateDetectorValues( quotaMatrix, 4412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project indexVector, 4422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project nrgVector, 4432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hInvFilt->detectorValues[band], 4442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startChannel, 4452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopChannel, 4462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startIndex, 4472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopIndex, 4482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hInvFilt->numberOfStrongest); 4492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project infVec[band]= decisionAlgorithm( hInvFilt->detectorParams, 4512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hInvFilt->detectorValues[band], 4522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project transientFlag, 4532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hInvFilt->prevRegionSbr[band], 4542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hInvFilt->prevRegionOrig[band]); 4552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 4582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 4612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 4622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Initialize an instance of the inverse filtering level estimator. 4632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return errorCode, noError if successful. 4662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 4682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 4692228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT 4702228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKsbrEnc_initInvFiltDetector (HANDLE_SBR_INV_FILT_EST hInvFilt, /*!< Pointer to a handle to the SBR_INV_FILT_EST struct. */ 4712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT* freqBandTableDetector, /*!< Frequency band table for the inverse filtering. */ 4722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT numDetectorBands, /*!< Number of inverse filtering bands. */ 4732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT useSpeechConfig /*!< Flag: adapt tuning parameters according to speech*/ 4742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 4752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 4762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i; 4772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear( hInvFilt,sizeof(SBR_INV_FILT_EST)); 4792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hInvFilt->detectorParams = (useSpeechConfig) ? &detectorParamsAACSpeech 4812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project : &detectorParamsAAC ; 4822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hInvFilt->noDetectorBandsMax = numDetectorBands; 4842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Memory initialisation 4872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 4882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=0;i<hInvFilt->noDetectorBandsMax;i++){ 4892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(&hInvFilt->detectorValues[i], sizeof(DETECTOR_VALUES)); 4902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hInvFilt->prevInvfMode[i] = INVF_OFF; 4912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hInvFilt->prevRegionOrig[i] = 0; 4922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hInvFilt->prevRegionSbr[i] = 0; 4932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Reset the inverse fltering detector. 4972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 4982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKsbrEnc_resetInvFiltDetector(hInvFilt, 4992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project freqBandTableDetector, 5002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hInvFilt->noDetectorBandsMax); 5012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (0); 5032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 5042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 5072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 5082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief resets sbr inverse filtering structure. 5092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return errorCode, noError if successful. 5132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 5152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/**************************************************************************/ 5162228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT 5172228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKsbrEnc_resetInvFiltDetector(HANDLE_SBR_INV_FILT_EST hInvFilt, /*!< Handle to the SBR_INV_FILT_EST struct. */ 5182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT* freqBandTableDetector, /*!< Frequency band table for the inverse filtering. */ 5192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT numDetectorBands) /*!< Number of inverse filtering bands. */ 5202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 5212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hInvFilt->numberOfStrongest = 1; 5232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy(hInvFilt->freqBandTableInvFilt,freqBandTableDetector,(numDetectorBands+1)*sizeof(INT)); 5242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hInvFilt->noDetectorBands = numDetectorBands; 5252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (0); 5272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 5282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 530