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/*! 852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \file 862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Sbr decoder 872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project This module provides the actual decoder implementation. The SBR data (side information) is already 882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project decoded. Only three functions are provided: 892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \li 1.) createSbrDec(): One time initialization 912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \li 2.) resetSbrDec(): Called by sbr_Apply() when the information contained in an SBR_HEADER_ELEMENT requires a reset 922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project and recalculation of important SBR structures. 932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \li 3.) sbr_dec(): The actual decoder. Calls the different tools such as filterbanks, lppTransposer(), and calculateSbrEnvelope() 942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project [the envelope adjuster]. 952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \sa sbr_dec(), \ref documentationOverview 972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "sbr_dec.h" 1002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "sbr_ram.h" 1022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "env_extr.h" 1032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "env_calc.h" 1042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "scale.h" 1052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "genericStds.h" 1072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "sbrdec_drc.h" 1092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void assignLcTimeSlots( HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */ 1132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL **QmfBufferReal, 1142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int noCols ) 1152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int slot, i; 1172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *ptr; 1182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Number of QMF timeslots in the overlap buffer: */ 1202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ptr = hSbrDec->pSbrOverlapBuffer; 1212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(slot=0; slot<hSbrDec->LppTrans.pSettings->overlap; slot++) { 1222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal[slot] = ptr; ptr += (64); 1232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Assign timeslots to Workbuffer1 */ 1262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ptr = hSbrDec->WorkBuffer1; 1272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=0; i<noCols; i++) { 1282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal[slot] = ptr; ptr += (64); 1292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project slot++; 1302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void assignHqTimeSlots( HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */ 1352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL **QmfBufferReal, 1362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL **QmfBufferImag, 1372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int noCols ) 1382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *ptr; 1402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int slot; 1412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Number of QMF timeslots in one half of a frame (size of Workbuffer1 or 2): */ 1432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int halflen = (noCols >> 1) + hSbrDec->LppTrans.pSettings->overlap; 1442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int totCols = noCols + hSbrDec->LppTrans.pSettings->overlap; 1452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Number of QMF timeslots in the overlap buffer: */ 1472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ptr = hSbrDec->pSbrOverlapBuffer; 1482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(slot=0; slot<hSbrDec->LppTrans.pSettings->overlap; slot++) { 1492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal[slot] = ptr; ptr += (64); 1502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferImag[slot] = ptr; ptr += (64); 1512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Assign first half of timeslots to Workbuffer1 */ 1542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ptr = hSbrDec->WorkBuffer1; 1552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(; slot<halflen; slot++) { 1562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal[slot] = ptr; ptr += (64); 1572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferImag[slot] = ptr; ptr += (64); 1582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Assign second half of timeslots to Workbuffer2 */ 1612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ptr = hSbrDec->WorkBuffer2; 1622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(; slot<totCols; slot++) { 1632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal[slot] = ptr; ptr += (64); 1642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferImag[slot] = ptr; ptr += (64); 1652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void assignTimeSlots( HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */ 1702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int noCols, 1712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int useLP ) 1722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* assign qmf time slots */ 1742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->useLP = useLP; 1752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (useLP) { 1762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->SynthesisQMF.flags |= QMF_FLAG_LP; 1772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->AnalysiscQMF.flags |= QMF_FLAG_LP; 1782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else { 1792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->SynthesisQMF.flags &= ~QMF_FLAG_LP; 1802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->AnalysiscQMF.flags &= ~QMF_FLAG_LP; 1812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (!useLP) 1832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project assignHqTimeSlots( hSbrDec, hSbrDec->QmfBufferReal, hSbrDec->QmfBufferImag, noCols ); 1842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else 1852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 1862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project assignLcTimeSlots( hSbrDec, hSbrDec->QmfBufferReal, noCols ); 1872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void changeQmfType( HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */ 1912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int useLdTimeAlign ) 1922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT synQmfFlags = hSbrDec->SynthesisQMF.flags; 1942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT anaQmfFlags = hSbrDec->AnalysiscQMF.flags; 1952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int resetSynQmf = 0; 1962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int resetAnaQmf = 0; 1972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* assign qmf type */ 1992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (useLdTimeAlign) { 2002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (synQmfFlags & QMF_FLAG_CLDFB) { 2012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* change the type to MPSLD */ 2022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmfFlags &= ~QMF_FLAG_CLDFB; 2032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmfFlags |= QMF_FLAG_MPSLDFB; 2042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project resetSynQmf = 1; 2052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (anaQmfFlags & QMF_FLAG_CLDFB) { 2072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* change the type to MPSLD */ 2082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project anaQmfFlags &= ~QMF_FLAG_CLDFB; 2092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project anaQmfFlags |= QMF_FLAG_MPSLDFB; 2102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project resetAnaQmf = 1; 2112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else { 2132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (synQmfFlags & QMF_FLAG_MPSLDFB) { 2142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* change the type to CLDFB */ 2152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmfFlags &= ~QMF_FLAG_MPSLDFB; 2162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmfFlags |= QMF_FLAG_CLDFB; 2172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project resetSynQmf = 1; 2182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (anaQmfFlags & QMF_FLAG_MPSLDFB) { 2202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* change the type to CLDFB */ 2212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project anaQmfFlags &= ~QMF_FLAG_MPSLDFB; 2222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project anaQmfFlags |= QMF_FLAG_CLDFB; 2232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project resetAnaQmf = 1; 2242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (resetAnaQmf) { 2282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int qmfErr = qmfInitAnalysisFilterBank ( 2292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hSbrDec->AnalysiscQMF, 2302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->anaQmfStates, 2312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->AnalysiscQMF.no_col, 2322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->AnalysiscQMF.lsb, 2332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->AnalysiscQMF.usb, 2342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->AnalysiscQMF.no_channels, 2352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project anaQmfFlags | QMF_FLAG_KEEP_STATES 2362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 2372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (qmfErr != 0) { 2382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDK_ASSERT(0); 2392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (resetSynQmf) { 2432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int qmfErr = qmfInitSynthesisFilterBank ( 2442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hSbrDec->SynthesisQMF, 2452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->pSynQmfStates, 2462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->SynthesisQMF.no_col, 2472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->SynthesisQMF.lsb, 2482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->SynthesisQMF.usb, 2492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->SynthesisQMF.no_channels, 2502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmfFlags | QMF_FLAG_KEEP_STATES 2512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 2522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (qmfErr != 0) { 2542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDK_ASSERT(0); 2552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 2612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief SBR decoder core function for one channel 2622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \image html BufferMgmtDetailed-1632.png 2642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Besides the filter states of the QMF filter bank and the LPC-states of 2662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project the LPP-Transposer, processing is mainly based on four buffers: 2672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project #timeIn, #timeOut, #WorkBuffer2 and #OverlapBuffer. The #WorkBuffer2 2682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project is reused for all channels and might be used by the core decoder, a 2692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project static overlap buffer is required for each channel. Du to in-place 2702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project processing, #timeIn and #timeOut point to identical locations. 2712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project The spectral data is organized in so-called slots, each slot 2732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project containing 64 bands of complex data. The number of slots per frame is 2742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dependend on the frame size. For mp3PRO, there are 18 slots per frame 2752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project and 6 slots per #OverlapBuffer. It is not necessary to have the slots 2762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project in located consecutive address ranges. 2772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project To optimize memory usage and to minimize the number of memory 2792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project accesses, the memory management is organized as follows (Slot numbers 2802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project based on mp3PRO): 2812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1.) Input time domain signal is located in #timeIn, the last slots 2832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (0..5) of the spectral data of the previous frame are located in the 2842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project #OverlapBuffer. In addition, #frameData of the current frame resides 2852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project in the upper part of #timeIn. 2862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2.) During the cplxAnalysisQmfFiltering(), 32 samples from #timeIn are transformed 2882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project into a slot of up to 32 complex spectral low band values at a 2892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project time. The first spectral slot -- nr. 6 -- is written at slot number 2902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project zero of #WorkBuffer2. #WorkBuffer2 will be completely filled with 2912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project spectral data. 2922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3.) LPP-Transposition in lppTransposer() is processed on 24 slots. During the 2942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project transposition, the high band part of the spectral data is replicated 2952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project based on the low band data. 2962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Envelope Adjustment is processed on the high band part of the spectral 2982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project data only by calculateSbrEnvelope(). 2992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4.) The cplxSynthesisQmfFiltering() creates 64 time domain samples out 3012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project of a slot of 64 complex spectral values at a time. The first 6 slots 3022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project in #timeOut are filled from the results of spectral slots 0..5 in the 3032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project #OverlapBuffer. The consecutive slots in timeOut are now filled with 3042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project the results of spectral slots 6..17. 3052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5.) The preprocessed slots 18..23 have to be stored in the 3072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project #OverlapBuffer. 3082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 3102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid 3122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsbr_dec ( HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */ 3132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT_PCM *timeIn, /*!< pointer to input time signal */ 3142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT_PCM *timeOut, /*!< pointer to output time signal */ 3152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_DEC hSbrDecRight, /*!< handle to Decoder channel right */ 3162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT_PCM *timeOutRight, /*!< pointer to output time signal */ 3172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const int strideIn, /*!< Time data traversal strideIn */ 3182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const int strideOut, /*!< Time data traversal strideOut */ 3192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_HEADER_DATA hHeaderData,/*!< Static control data */ 3202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_FRAME_DATA hFrameData, /*!< Control data of current frame */ 3212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_PREV_FRAME_DATA hPrevFrameData, /*!< Some control data of last frame */ 3222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const int applyProcessing, /*!< Flag for SBR operation */ 3232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_PS_DEC h_ps_d, 3242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT flags 3252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 3262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i, slot, reserve; 3282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int saveLbScale; 3292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int ov_len; 3302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int lastSlotOffs; 3312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL maxVal; 3322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 1+1/3 frames of spectral data: */ 3342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL **QmfBufferReal = hSbrDec->QmfBufferReal; 3352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL **QmfBufferImag = hSbrDec->QmfBufferImag; 3362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Number of QMF timeslots in the overlap buffer: */ 3382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ov_len = hSbrDec->LppTrans.pSettings->overlap; 3392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Number of QMF slots per frame */ 3412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int noCols = hHeaderData->numberTimeSlots * hHeaderData->timeStep; 3422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* assign qmf time slots */ 3442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( ((flags & SBRDEC_LOW_POWER ) ? 1 : 0) != ((hSbrDec->SynthesisQMF.flags & QMF_FLAG_LP) ? 1 : 0) ) { 3452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project assignTimeSlots( hSbrDec, hHeaderData->numberTimeSlots * hHeaderData->timeStep, flags & SBRDEC_LOW_POWER); 3462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (flags & SBRDEC_ELD_GRID) { 3492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Choose the right low delay filter bank */ 3502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project changeQmfType( hSbrDec, (flags & SBRDEC_LD_MPS_QMF) ? 1 : 0 ); 3512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 3542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project low band codec signal subband filtering 3552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 3562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 3582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project C_AALLOC_SCRATCH_START(qmfTemp, FIXP_DBL, 2*(64)); 3592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfAnalysisFiltering( &hSbrDec->AnalysiscQMF, 3612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal + ov_len, 3622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferImag + ov_len, 3632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hSbrDec->sbrScaleFactor, 3642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project timeIn, 3652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project strideIn, 3662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfTemp 3672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 3682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project C_AALLOC_SCRATCH_END(qmfTemp, FIXP_DBL, 2*(64)); 3702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 3732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Clear upper half of spectrum 3742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 3752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 3762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int nAnalysisBands = hHeaderData->numberOfAnalysisBands; 3772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (! (flags & SBRDEC_LOW_POWER)) { 3792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (slot = ov_len; slot < noCols+ov_len; slot++) { 3802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(&QmfBufferReal[slot][nAnalysisBands],((64)-nAnalysisBands)*sizeof(FIXP_DBL)); 3812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(&QmfBufferImag[slot][nAnalysisBands],((64)-nAnalysisBands)*sizeof(FIXP_DBL)); 3822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else 3842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (slot = ov_len; slot < noCols+ov_len; slot++) { 3852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(&QmfBufferReal[slot][nAnalysisBands],((64)-nAnalysisBands)*sizeof(FIXP_DBL)); 3862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 3922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Shift spectral data left to gain accuracy in transposer and adjustor 3932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 3942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxVal = maxSubbandSample( QmfBufferReal, 3952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (flags & SBRDEC_LOW_POWER) ? NULL : QmfBufferImag, 3962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0, 3972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->AnalysiscQMF.lsb, 3982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ov_len, 3992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project noCols+ov_len ); 4002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project reserve = fixMax(0,CntLeadingZeros(maxVal)-1) ; 4022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project reserve = fixMin(reserve,DFRACT_BITS-1-hSbrDec->sbrScaleFactor.lb_scale); 4032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* If all data is zero, lb_scale could become too large */ 4052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rescaleSubbandSamples( QmfBufferReal, 4062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (flags & SBRDEC_LOW_POWER) ? NULL : QmfBufferImag, 4072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0, 4082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->AnalysiscQMF.lsb, 4092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ov_len, 4102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project noCols+ov_len, 4112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project reserve); 4122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->sbrScaleFactor.lb_scale += reserve; 4142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project save low band scale, wavecoding or parametric stereo may modify it 4172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 4182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project saveLbScale = hSbrDec->sbrScaleFactor.lb_scale; 4192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (applyProcessing) 4222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR * borders = hFrameData->frameInfo.borders; 4242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastSlotOffs = borders[hFrameData->frameInfo.nEnvelopes] - hHeaderData->numberTimeSlots; 4252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL degreeAlias[(64)]; 4272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* The transposer will override most values in degreeAlias[]. 4292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project The array needs to be cleared at least from lowSubband to highSubband before. */ 4302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (flags & SBRDEC_LOW_POWER) 4312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(°reeAlias[hHeaderData->freqBandData.lowSubband], (hHeaderData->freqBandData.highSubband-hHeaderData->freqBandData.lowSubband)*sizeof(FIXP_DBL)); 4322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Inverse filtering of lowband and transposition into the SBR-frequency range 4352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 4362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lppTransposer ( &hSbrDec->LppTrans, 4382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hSbrDec->sbrScaleFactor, 4392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal, 4402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project degreeAlias, // only used if useLP = 1 4412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferImag, 4422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project flags & SBRDEC_LOW_POWER, 4432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->timeStep, 4442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project borders[0], 4452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastSlotOffs, 4462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.nInvfBands, 4472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hFrameData->sbr_invf_mode, 4482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hPrevFrameData->sbr_invf_mode ); 4492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Adjust envelope of current frame. 4562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 4572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project calculateSbrEnvelope (&hSbrDec->sbrScaleFactor, 4592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hSbrDec->SbrCalculateEnvelope, 4602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData, 4612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hFrameData, 4622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal, 4632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferImag, 4642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project flags & SBRDEC_LOW_POWER, 4652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project degreeAlias, 4672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project flags, 4682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (hHeaderData->frameErrorFlag || hPrevFrameData->frameErrorFlag)); 4692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Update hPrevFrameData (to be used in the next frame) 4732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 4742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=0; i<hHeaderData->freqBandData.nInvfBands; i++) { 4752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hPrevFrameData->sbr_invf_mode[i] = hFrameData->sbr_invf_mode[i]; 4762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hPrevFrameData->coupling = hFrameData->coupling; 4782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hPrevFrameData->stopPos = borders[hFrameData->frameInfo.nEnvelopes]; 4792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hPrevFrameData->ampRes = hFrameData->ampResolutionCurrentFrame; 4802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 4822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Reset hb_scale if no highband is present, because hb_scale is considered in the QMF-synthesis */ 4832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->sbrScaleFactor.hb_scale = saveLbScale; 4842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=0; i<LPC_ORDER; i++){ 4882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Store the unmodified qmf Slots values (required for LPC filtering) 4902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 4912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (! (flags & SBRDEC_LOW_POWER)) { 4922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy(hSbrDec->LppTrans.lpcFilterStatesReal[i], QmfBufferReal[noCols-LPC_ORDER+i], hSbrDec->AnalysiscQMF.lsb*sizeof(FIXP_DBL)); 4932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy(hSbrDec->LppTrans.lpcFilterStatesImag[i], QmfBufferImag[noCols-LPC_ORDER+i], hSbrDec->AnalysiscQMF.lsb*sizeof(FIXP_DBL)); 4942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else 4952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy(hSbrDec->LppTrans.lpcFilterStatesReal[i], QmfBufferReal[noCols-LPC_ORDER+i], hSbrDec->AnalysiscQMF.lsb*sizeof(FIXP_DBL)); 4962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Synthesis subband filtering. 5002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 5012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( ! (flags & SBRDEC_PS_DECODED) ) { 5032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int outScalefactor = 0; 5062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (h_ps_d != NULL) { 5082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project h_ps_d->procFrameBased = 1; /* we here do frame based processing */ 5092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrDecoder_drcApply(&hSbrDec->sbrDrcChannel, 5132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal, 5142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (flags & SBRDEC_LOW_POWER) ? NULL : QmfBufferImag, 5152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->SynthesisQMF.no_col, 5162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &outScalefactor 5172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 5182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfChangeOutScalefactor(&hSbrDec->SynthesisQMF, outScalefactor ); 5222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project C_AALLOC_SCRATCH_START(qmfTemp, FIXP_DBL, 2*(64)); 5252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfSynthesisFiltering( &hSbrDec->SynthesisQMF, 5272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal, 5282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (flags & SBRDEC_LOW_POWER) ? NULL : QmfBufferImag, 5292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hSbrDec->sbrScaleFactor, 5302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->LppTrans.pSettings->overlap, 5312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project timeOut, 5322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project strideOut, 5332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfTemp); 5342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project C_AALLOC_SCRATCH_END(qmfTemp, FIXP_DBL, 2*(64)); 5362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else { /* (flags & SBRDEC_PS_DECODED) */ 5412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i, sdiff, outScalefactor, scaleFactorLowBand, scaleFactorHighBand; 5422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SCHAR scaleFactorLowBand_ov, scaleFactorLowBand_no_ov; 5432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_QMF_FILTER_BANK synQmf = &hSbrDec->SynthesisQMF; 5452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_QMF_FILTER_BANK synQmfRight = &hSbrDecRight->SynthesisQMF; 5462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* adapt scaling */ 5482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sdiff = hSbrDec->sbrScaleFactor.lb_scale - reserve; /* Scaling difference */ 5492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scaleFactorHighBand = sdiff - hSbrDec->sbrScaleFactor.hb_scale; /* Scale of current high band */ 5502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scaleFactorLowBand_ov = sdiff - hSbrDec->sbrScaleFactor.ov_lb_scale; /* Scale of low band overlapping QMF data */ 5512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scaleFactorLowBand_no_ov = sdiff - hSbrDec->sbrScaleFactor.lb_scale; /* Scale of low band current QMF data */ 5522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project outScalefactor = 0; /* Initial output scale */ 5532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (h_ps_d->procFrameBased == 1) /* If we have switched from frame to slot based processing copy filter states */ 5552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { /* procFrameBased will be unset later */ 5562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* copy filter states from left to right */ 5572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy(synQmfRight->FilterStates, synQmf->FilterStates, ((640)-(64))*sizeof(FIXP_QSS)); 5582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* scale ALL qmf vales ( real and imag ) of mono / left channel to the 5612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project same scale factor ( ov_lb_sf, lb_sf and hq_sf ) */ 5622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scalFilterBankValues( h_ps_d, /* parametric stereo decoder handle */ 5632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal, /* qmf filterbank values */ 5642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferImag, /* qmf filterbank values */ 5652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmf->lsb, /* sbr start subband */ 5662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->sbrScaleFactor.ov_lb_scale, 5672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->sbrScaleFactor.lb_scale, 5682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &scaleFactorLowBand_ov, /* adapt scaling values */ 5692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &scaleFactorLowBand_no_ov, /* adapt scaling values */ 5702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->sbrScaleFactor.hb_scale, /* current frame ( highband ) */ 5712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &scaleFactorHighBand, 5722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmf->no_col); 5732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* use the same synthese qmf values for left and right channel */ 5752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmfRight->no_col = synQmf->no_col; 5762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmfRight->lsb = synQmf->lsb; 5772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmfRight->usb = synQmf->usb; 5782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int env=0; 5802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project outScalefactor += (SCAL_HEADROOM+1); /* psDiffScale! */ 5822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 584381d69840ad3af2259f0b7ef49236f9ee9c76b76Jean-Michel Trivi C_AALLOC_SCRATCH_START(pWorkBuffer, FIXP_DBL, 2*(64)); 5852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int maxShift = 0; 5872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5886ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi if (hSbrDec->sbrDrcChannel.enable != 0) { 5896ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi if (hSbrDec->sbrDrcChannel.prevFact_exp > maxShift) { 5906ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi maxShift = hSbrDec->sbrDrcChannel.prevFact_exp; 5916ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi } 5926ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi if (hSbrDec->sbrDrcChannel.currFact_exp > maxShift) { 5936ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi maxShift = hSbrDec->sbrDrcChannel.currFact_exp; 5946ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi } 5956ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi if (hSbrDec->sbrDrcChannel.nextFact_exp > maxShift) { 5966ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi maxShift = hSbrDec->sbrDrcChannel.nextFact_exp; 5976ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi } 5982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* copy DRC data to right channel (with PS both channels use the same DRC gains) */ 6012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy(&hSbrDecRight->sbrDrcChannel, &hSbrDec->sbrDrcChannel, sizeof(SBRDEC_DRC_CHANNEL)); 6022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i = 0; i < synQmf->no_col; i++) { /* ----- no_col loop ----- */ 6042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT outScalefactorR, outScalefactorL; 6062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project outScalefactorR = outScalefactorL = outScalefactor; 6072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* qmf timeslot of right channel */ 6092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL* rQmfReal = pWorkBuffer; 6102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL* rQmfImag = pWorkBuffer + 64; 6112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( i == h_ps_d->bsData[h_ps_d->processSlot].mpeg.aEnvStartStop[env] ) { 6152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project initSlotBasedRotation( h_ps_d, env, hHeaderData->freqBandData.highSubband ); 6162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project env++; 6172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ApplyPsSlot( h_ps_d, /* parametric stereo decoder handle */ 6202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (QmfBufferReal + i), /* one timeslot of left/mono channel */ 6212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (QmfBufferImag + i), /* one timeslot of left/mono channel */ 6222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rQmfReal, /* one timeslot or right channel */ 6232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rQmfImag); /* one timeslot or right channel */ 6242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scaleFactorLowBand = (i<(6)) ? scaleFactorLowBand_ov : scaleFactorLowBand_no_ov; 6282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrDecoder_drcApplySlot ( /* right channel */ 6312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hSbrDecRight->sbrDrcChannel, 6322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rQmfReal, 6332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rQmfImag, 6342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i, 6352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmfRight->no_col, 6362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxShift 6372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 6382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project outScalefactorR += maxShift; 6402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrDecoder_drcApplySlot ( /* left channel */ 6422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hSbrDec->sbrDrcChannel, 6432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *(QmfBufferReal + i), 6442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *(QmfBufferImag + i), 6452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i, 6462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmf->no_col, 6472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxShift 6482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 6492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project outScalefactorL += maxShift; 6512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* scale filter states for left and right channel */ 6542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfChangeOutScalefactor( synQmf, outScalefactorL ); 6552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfChangeOutScalefactor( synQmfRight, outScalefactorR ); 6562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfSynthesisFilteringSlot( synQmfRight, 6602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rQmfReal, /* QMF real buffer */ 6612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rQmfImag, /* QMF imag buffer */ 6622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scaleFactorLowBand, 6632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scaleFactorHighBand, 6642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project timeOutRight+(i*synQmf->no_channels*strideOut), 6652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project strideOut, 6662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pWorkBuffer); 6672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfSynthesisFilteringSlot( synQmf, 6692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *(QmfBufferReal + i), /* QMF real buffer */ 6702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *(QmfBufferImag + i), /* QMF imag buffer */ 6712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scaleFactorLowBand, 6722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scaleFactorHighBand, 6732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project timeOut+(i*synQmf->no_channels*strideOut), 6742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project strideOut, 6752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pWorkBuffer); 6762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } /* no_col loop i */ 6792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* scale back (6) timeslots look ahead for hybrid filterbank to original value */ 6812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rescalFilterBankValues( h_ps_d, 6822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferReal, 6832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QmfBufferImag, 6842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmf->lsb, 6852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project synQmf->no_col ); 6862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 687381d69840ad3af2259f0b7ef49236f9ee9c76b76Jean-Michel Trivi C_AALLOC_SCRATCH_END(pWorkBuffer, FIXP_DBL, 2*(64)); 6882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrDecoder_drcUpdateChannel( &hSbrDec->sbrDrcChannel ); 6922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 6952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Update overlap buffer 6962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Even bands above usb are copied to avoid outdated spectral data in case 6972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project the stop frequency raises. 6982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 6992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hSbrDec->LppTrans.pSettings->overlap > 0) 7012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 7022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (! (flags & SBRDEC_LOW_POWER)) { 7032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for ( i=0; i<hSbrDec->LppTrans.pSettings->overlap; i++ ) { 7042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy(QmfBufferReal[i], QmfBufferReal[i+noCols], (64)*sizeof(FIXP_DBL)); 7052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy(QmfBufferImag[i], QmfBufferImag[i+noCols], (64)*sizeof(FIXP_DBL)); 7062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else 7082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for ( i=0; i<hSbrDec->LppTrans.pSettings->overlap; i++ ) { 7092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy(QmfBufferReal[i], QmfBufferReal[i+noCols], (64)*sizeof(FIXP_DBL)); 7102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->sbrScaleFactor.ov_lb_scale = saveLbScale; 7142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Save current frame status */ 7162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hPrevFrameData->frameErrorFlag = hHeaderData->frameErrorFlag; 7172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} // sbr_dec() 7192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 7222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Creates sbr decoder structure 7232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return errorCode, 0 if successful 7242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 7252228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSBR_ERROR 7262228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectcreateSbrDec (SBR_CHANNEL * hSbrChannel, 7272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */ 7282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project TRANSPOSER_SETTINGS *pSettings, 7292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const int downsampleFac, /*!< Downsampling factor */ 7302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT qmfFlags, /*!< flags -> 1: HQ/LP selector, 2: CLDFB */ 7312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT flags, 7322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const int overlap, 7332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int chan) /*!< Channel for which to assign buffers etc. */ 7342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 7362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SBR_ERROR err = SBRDEC_OK; 7372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int timeSlots = hHeaderData->numberTimeSlots; /* Number of SBR slots per frame */ 7382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int noCols = timeSlots * hHeaderData->timeStep; /* Number of QMF slots per frame */ 7392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_DEC hs = &(hSbrChannel->SbrDec); 7402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Initialize scale factors */ 7422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hs->sbrScaleFactor.ov_lb_scale = 0; 7432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hs->sbrScaleFactor.ov_hb_scale = 0; 7442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hs->sbrScaleFactor.hb_scale = 0; 7452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 7482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project create envelope calculator 7492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 7502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project err = createSbrEnvelopeCalc (&hs->SbrCalculateEnvelope, 7512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData, 7522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project chan, 7532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project flags); 7542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (err != SBRDEC_OK) { 7552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return err; 7562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 7592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project create QMF filter banks 7602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 7612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 7622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int qmfErr; 7633a0a695565d1d360f9a82173469c8ef858bc08a0Jean-Michel Trivi /* Adapted QMF analysis post-twiddles for down-sampled HQ SBR */ 7643a0a695565d1d360f9a82173469c8ef858bc08a0Jean-Michel Trivi const UINT downSampledFlag = (downsampleFac==2) ? QMF_FLAG_DOWNSAMPLED : 0; 7652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfErr = qmfInitAnalysisFilterBank ( 7672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hs->AnalysiscQMF, 7682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hs->anaQmfStates, 7692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project noCols, 7702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.lowSubband, 7712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.highSubband, 7722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->numberOfAnalysisBands, 7733a0a695565d1d360f9a82173469c8ef858bc08a0Jean-Michel Trivi (qmfFlags & (~QMF_FLAG_KEEP_STATES)) | downSampledFlag 7742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 7752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (qmfErr != 0) { 7762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 7772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hs->pSynQmfStates == NULL) { 7802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hs->pSynQmfStates = GetRam_sbr_QmfStatesSynthesis(chan); 7812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hs->pSynQmfStates == NULL) 7822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_MEM_ALLOC_FAILED; 7832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 7862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int qmfErr; 7872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfErr = qmfInitSynthesisFilterBank ( 7892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hs->SynthesisQMF, 7902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hs->pSynQmfStates, 7912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project noCols, 7922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.lowSubband, 7932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.highSubband, 7942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (64) / downsampleFac, 7952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfFlags & (~QMF_FLAG_KEEP_STATES) 7962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 7972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (qmfErr != 0) { 7992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 8002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project initSbrPrevFrameData (&hSbrChannel->prevFrameData, timeSlots); 8032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 8052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project create transposer 8062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 8072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project err = createLppTransposer (&hs->LppTrans, 8082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pSettings, 8092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.lowSubband, 8102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.v_k_master, 8112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.numMaster, 8122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hs->SynthesisQMF.usb, 8132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project timeSlots, 8142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hs->AnalysiscQMF.no_col, 8152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.freqBandTableNoise, 8162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.nNfb, 8172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->sbrProcSmplRate, 8182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project chan, 8192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project overlap ); 8202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (err != SBRDEC_OK) { 8212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return err; 8222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* The CLDFB does not have overlap */ 8252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((qmfFlags & QMF_FLAG_CLDFB) == 0) { 8262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hs->pSbrOverlapBuffer == NULL) { 8272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hs->pSbrOverlapBuffer = GetRam_sbr_OverlapBuffer(chan); 8282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hs->pSbrOverlapBuffer == NULL) { 8292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_MEM_ALLOC_FAILED; 8302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else { 8322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Clear overlap buffer */ 8332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear( hs->pSbrOverlapBuffer, 8342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sizeof(FIXP_DBL) * 2 * (6) * (64) 8352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 8362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* assign qmf time slots */ 8402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project assignTimeSlots( &hSbrChannel->SbrDec, hHeaderData->numberTimeSlots * hHeaderData->timeStep, qmfFlags & QMF_FLAG_LP); 8412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return err; 8432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 8442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 8462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Delete sbr decoder structure 8472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return errorCode, 0 if successful 8482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 8492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectint 8502228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectdeleteSbrDec (SBR_CHANNEL * hSbrChannel) 8512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 8522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_DEC hs = &hSbrChannel->SbrDec; 8532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deleteSbrEnvelopeCalc (&hs->SbrCalculateEnvelope); 8552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* delete QMF filter states */ 8572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hs->pSynQmfStates != NULL) { 8582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FreeRam_sbr_QmfStatesSynthesis(&hs->pSynQmfStates); 8592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hs->pSbrOverlapBuffer != NULL) { 8632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FreeRam_sbr_OverlapBuffer(&hs->pSbrOverlapBuffer); 8642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return 0; 8672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 8682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 8712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief resets sbr decoder structure 8722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return errorCode, 0 if successful 8732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 8742228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSBR_ERROR 8752228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectresetSbrDec (HANDLE_SBR_DEC hSbrDec, 8762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_HEADER_DATA hHeaderData, 8772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_PREV_FRAME_DATA hPrevFrameData, 8782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const int useLP, 8792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const int downsampleFac 8802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 8812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 8822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SBR_ERROR sbrError = SBRDEC_OK; 8832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int old_lsb = hSbrDec->SynthesisQMF.lsb; 8852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int new_lsb = hHeaderData->freqBandData.lowSubband; 8862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int l, startBand, stopBand, startSlot, size; 8872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int source_scale, target_scale, delta_scale, target_lsb, target_usb, reserve; 8892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL maxVal; 8902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* overlapBuffer point to first (6) slots */ 8922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL **OverlapBufferReal = hSbrDec->QmfBufferReal; 8932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL **OverlapBufferImag = hSbrDec->QmfBufferImag; 8942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* assign qmf time slots */ 8962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project assignTimeSlots( hSbrDec, hHeaderData->numberTimeSlots * hHeaderData->timeStep, useLP); 8972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project resetSbrEnvelopeCalc (&hSbrDec->SbrCalculateEnvelope); 9012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->SynthesisQMF.lsb = hHeaderData->freqBandData.lowSubband; 9032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->SynthesisQMF.usb = fixMin((INT)hSbrDec->SynthesisQMF.no_channels, (INT)hHeaderData->freqBandData.highSubband); 9042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->AnalysiscQMF.lsb = hSbrDec->SynthesisQMF.lsb; 9062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->AnalysiscQMF.usb = hSbrDec->SynthesisQMF.usb; 9072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 9102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project The following initialization of spectral data in the overlap buffer 9112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project is required for dynamic x-over or a change of the start-freq for 2 reasons: 9122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1. If the lowband gets _wider_, unadjusted data would remain 9142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2. If the lowband becomes _smaller_, the highest bands of the old lowband 9162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project must be cleared because the whitening would be affected 9172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 9182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startBand = old_lsb; 9192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopBand = new_lsb; 9202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startSlot = hHeaderData->timeStep * (hPrevFrameData->stopPos - hHeaderData->numberTimeSlots); 9212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project size = fixMax(0,stopBand-startBand); 9222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* keep already adjusted data in the x-over-area */ 9242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (!useLP) { 9252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (l=startSlot; l<hSbrDec->LppTrans.pSettings->overlap; l++) { 9262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(&OverlapBufferReal[l][startBand], size*sizeof(FIXP_DBL)); 9272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(&OverlapBufferImag[l][startBand], size*sizeof(FIXP_DBL)); 9282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else 9302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (l=startSlot; l<hSbrDec->LppTrans.pSettings->overlap ; l++) { 9312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(&OverlapBufferReal[l][startBand], size*sizeof(FIXP_DBL)); 9322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 9362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project reset LPC filter states 9372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 9382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startBand = fixMin(old_lsb,new_lsb); 9392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopBand = fixMax(old_lsb,new_lsb); 9402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project size = fixMax(0,stopBand-startBand); 9412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(&hSbrDec->LppTrans.lpcFilterStatesReal[0][startBand], size*sizeof(FIXP_DBL)); 9432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(&hSbrDec->LppTrans.lpcFilterStatesReal[1][startBand], size*sizeof(FIXP_DBL)); 9442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (!useLP) { 9452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(&hSbrDec->LppTrans.lpcFilterStatesImag[0][startBand], size*sizeof(FIXP_DBL)); 9462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(&hSbrDec->LppTrans.lpcFilterStatesImag[1][startBand], size*sizeof(FIXP_DBL)); 9472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 9512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Rescale already processed spectral data between old and new x-over frequency. 9522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project This must be done because of the separate scalefactors for lowband and highband. 9532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 9542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startBand = fixMin(old_lsb,new_lsb); 9552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopBand = fixMax(old_lsb,new_lsb); 9562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (new_lsb > old_lsb) { 9582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* The x-over-area was part of the highband before and will now belong to the lowband */ 9592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project source_scale = hSbrDec->sbrScaleFactor.ov_hb_scale; 9602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project target_scale = hSbrDec->sbrScaleFactor.ov_lb_scale; 9612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project target_lsb = 0; 9622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project target_usb = old_lsb; 9632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 9652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* The x-over-area was part of the lowband before and will now belong to the highband */ 9662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project source_scale = hSbrDec->sbrScaleFactor.ov_lb_scale; 9672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project target_scale = hSbrDec->sbrScaleFactor.ov_hb_scale; 9682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* jdr: The values old_lsb and old_usb might be wrong because the previous frame might have been "upsamling". */ 9692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project target_lsb = hSbrDec->SynthesisQMF.lsb; 9702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project target_usb = hSbrDec->SynthesisQMF.usb; 9712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Shift left all samples of the x-over-area as much as possible 9742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project An unnecessary coarse scale could cause ov_lb_scale or ov_hb_scale to be 9752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project adapted and the accuracy in the next frame would seriously suffer! */ 9762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxVal = maxSubbandSample( OverlapBufferReal, 9782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (useLP) ? NULL : OverlapBufferImag, 9792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startBand, 9802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopBand, 9812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0, 9822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startSlot); 9832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project reserve = CntLeadingZeros(maxVal)-1; 9852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project reserve = fixMin(reserve,DFRACT_BITS-1-source_scale); 9862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rescaleSubbandSamples( OverlapBufferReal, 9882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (useLP) ? NULL : OverlapBufferImag, 9892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startBand, 9902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopBand, 9912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0, 9922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startSlot, 9932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project reserve); 9942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project source_scale += reserve; 9952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project delta_scale = target_scale - source_scale; 9972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (delta_scale > 0) { /* x-over-area is dominant */ 9992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project delta_scale = -delta_scale; 10002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startBand = target_lsb; 10012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopBand = target_usb; 10022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (new_lsb > old_lsb) { 10042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* The lowband has to be rescaled */ 10052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->sbrScaleFactor.ov_lb_scale = source_scale; 10062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 10082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* The highband has be be rescaled */ 10092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->sbrScaleFactor.ov_hb_scale = source_scale; 10102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDK_ASSERT(startBand <= stopBand); 10142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (!useLP) { 10162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (l=0; l<startSlot; l++) { 10172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scaleValues( OverlapBufferReal[l] + startBand, stopBand-startBand, delta_scale ); 10182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scaleValues( OverlapBufferImag[l] + startBand, stopBand-startBand, delta_scale ); 10192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else 10212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (l=0; l<startSlot; l++) { 10222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scaleValues( OverlapBufferReal[l] + startBand, stopBand-startBand, delta_scale ); 10232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 10272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Initialize transposer and limiter 10282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 10292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrError = resetLppTransposer (&hSbrDec->LppTrans, 10302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.lowSubband, 10312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.v_k_master, 10322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.numMaster, 10332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.freqBandTableNoise, 10342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.nNfb, 10352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.highSubband, 10362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->sbrProcSmplRate); 10372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sbrError != SBRDEC_OK) 10382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return sbrError; 10392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrError = ResetLimiterBands ( hHeaderData->freqBandData.limiterBandTable, 10412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hHeaderData->freqBandData.noLimiterBands, 10422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.freqBandTable[0], 10432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->freqBandData.nSfb[0], 10442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->LppTrans.pSettings->patchParam, 10452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hSbrDec->LppTrans.pSettings->noOfPatches, 10462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->bs_data.limiterBands); 10472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return sbrError; 10502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1051