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 52228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project� Copyright 1995 - 2012 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 RVLC Decoder 872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \author Robert Weidner 882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "rvlc.h" 912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "block.h" 942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "aac_rom.h" 962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "rvlcbit.h" 972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "rvlcconceal.h" 982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "aacdec_hcr.h" 992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*--------------------------------------------------------------------------------------------- 1012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project function: rvlcInit 1022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project description: init RVLC by data from channelinfo, which was decoded previously and 1042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project set up pointers 1052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 1062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project input: - pointer rvlc structure 1072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer channel info structure 1082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer bitstream structure 1092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 1102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return: - 1112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project-------------------------------------------------------------------------------------------- */ 1122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic 1142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid rvlcInit (CErRvlcInfo *pRvlc, 1152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CAacDecoderChannelInfo *pAacDecoderChannelInfo, 1162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM bs) 1172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* RVLC common initialization part 2 of 2 */ 1192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *pScfEsc = pAacDecoderChannelInfo->pComData->overlay.aac.aRvlcScfEsc; 1202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *pScfFwd = pAacDecoderChannelInfo->pComData->overlay.aac.aRvlcScfFwd; 1212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *pScfBwd = pAacDecoderChannelInfo->pComData->overlay.aac.aRvlcScfBwd; 1222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *pScaleFactor = pAacDecoderChannelInfo->pDynData->aScaleFactor; 1232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int bnds; 1242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderChannelInfo->pDynData->specificTo.aac.rvlcIntensityUsed = 0; 1262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->numDecodedEscapeWordsEsc = 0; 1282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->numDecodedEscapeWordsFwd = 0; 1292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->numDecodedEscapeWordsBwd = 0; 1302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->intensity_used = 0; 1322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->errorLogRvlc = 0; 1332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max = CONCEAL_MAX_INIT; 1352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min = CONCEAL_MIN_INIT; 1362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max_esc = CONCEAL_MAX_INIT; 1382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min_esc = CONCEAL_MIN_INIT; 1392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->pHuffTreeRvlcEscape = aHuffTreeRvlcEscape; 1412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->pHuffTreeRvlCodewds = aHuffTreeRvlCodewds; 1422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* init scf arrays (for savety (in case of there are only zero codebooks)) */ 1442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (bnds = 0; bnds < RVLC_MAX_SFB; bnds++) { 1452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfFwd[bnds] = 0; 1462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = 0; 1472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfEsc[bnds] = 0; 1482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScaleFactor[bnds] = 0; 1492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* set base bitstream ptr to the RVL-coded part (start of RVLC data (ESC 2)) */ 1522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKsyncCache (bs); 1532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->bitstreamIndexRvlFwd = FDKgetBitCnt(bs); /* first bit within RVL coded block as start address for forward decoding */ 1552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->bitstreamIndexRvlBwd = FDKgetBitCnt(bs) + pRvlc->length_of_rvlc_sf - 1; /* last bit within RVL coded block as start address for backward decoding */ 1562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* skip RVLC-bitstream-part -- pointing now to escapes (if present) or to TNS data (if present) */ 1582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKpushFor (bs, pRvlc->length_of_rvlc_sf); 1592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( pRvlc->sf_escapes_present != 0 ) { 1612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* locate internal bitstream ptr at escapes (which is the second part) */ 1632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKsyncCache (bs); 1642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->bitstreamIndexEsc = FDKgetBitCnt(bs); 1652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* skip escapeRVLC-bitstream-part -- pointing to TNS data (if present) to make decoder continue */ 1672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* decoding of RVLC should work despite this second pushFor during initialization because */ 1682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* bitstream initialization is valid for both ESC2 data parts (RVL-coded values and ESC-coded values) */ 1692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKpushFor (bs, pRvlc->length_of_rvlc_escapes); 1702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if VERBOSE_RVLC_INIT 1732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project DebugOutputInit(pRvlc,pAacDecoderChannelInfo); 1742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 1752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*--------------------------------------------------------------------------------------------- 1792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project function: rvlcCheckIntensityCb 1802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project description: Check if a intensity codebook is used in the current channel. 1822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 1832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project input: - pointer rvlc structure 1842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer channel info structure 1852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 1862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project output: - intensity_used: 0 no intensity codebook is used 1872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1 intensity codebook is used 1882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 1892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return: - 1902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project-------------------------------------------------------------------------------------------- */ 1912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic 1932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid rvlcCheckIntensityCb (CErRvlcInfo *pRvlc, 1942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CAacDecoderChannelInfo *pAacDecoderChannelInfo) 1952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int group, band, bnds; 1972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->intensity_used = 0; 1992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (group=0; group < pRvlc->numWindowGroups; group++) { 2012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (band=0; band < pRvlc->maxSfbTransmitted; band++) { 2022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bnds = 16*group+band; 2032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (pAacDecoderChannelInfo->pDynData->aCodeBook[bnds] == INTENSITY_HCB) || (pAacDecoderChannelInfo->pDynData->aCodeBook[bnds] == INTENSITY_HCB2) ) { 2042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->intensity_used = 1; 2052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*--------------------------------------------------------------------------------------------- 2132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project function: rvlcDecodeEscapeWord 2142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project description: Decode a huffman coded RVLC Escape-word. This value is part of a DPCM coded 2162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scalefactor. 2172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 2182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project input: - pointer rvlc structure 2192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 2202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return: - a single RVLC-Escape value which had to be applied to a DPCM value (which 2212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project has a absolute value of 7) 2222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project-------------------------------------------------------------------------------------------- */ 2232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic 2252228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSCHAR rvlcDecodeEscapeWord (CErRvlcInfo *pRvlc, 2262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM bs) 2272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i; 2292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SCHAR value; 2302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR carryBit; 2312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT treeNode; 2322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT branchValue; 2332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT branchNode; 2342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT* pBitstreamIndexEsc; 2362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT* pEscTree; 2372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pEscTree = pRvlc->pHuffTreeRvlcEscape; 2392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pBitstreamIndexEsc = &(pRvlc->bitstreamIndexEsc); 2402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project treeNode = *pEscTree; /* init at starting node */ 2412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=MAX_LEN_RVLC_ESCAPE_WORD-1; i >= 0; i--) { 2432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project carryBit = rvlcReadBitFromBitstream(bs, /* get next bit */ 2442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pBitstreamIndexEsc, 2452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FWD); 2462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CarryBitToBranchValue(carryBit, /* huffman decoding, do a single step in huffman decoding tree */ 2482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project treeNode, 2492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &branchValue, 2502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &branchNode); 2512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((branchNode & TEST_BIT_10) == TEST_BIT_10) { /* test bit 10 ; if set --> a RVLC-escape-word is completely decoded */ 2532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project value = (SCHAR) branchNode & CLR_BIT_10; 2542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->length_of_rvlc_escapes -= (MAX_LEN_RVLC_ESCAPE_WORD - i); 2552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_escapes < 0) { 2572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->errorLogRvlc |= RVLC_ERROR_ALL_ESCAPE_WORDS_INVALID; 2582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project value = -1; 2592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return value; 2622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 2642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project treeNode = *(pEscTree + branchValue); /* update treeNode for further step in decoding tree */ 2652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->errorLogRvlc |= RVLC_ERROR_ALL_ESCAPE_WORDS_INVALID; 2692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return -1; /* should not be reached */ 2712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*--------------------------------------------------------------------------------------------- 2752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project function: rvlcDecodeEscapes 2762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project description: Decodes all huffman coded RVLC Escape Words. 2782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Here a difference to the pseudo-code-implementation from standard can be 2792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project found. A while loop (and not two nested for loops) is used for two reasons: 2802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1. The plain huffman encoded escapes are decoded before the RVL-coded 2822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scalefactors. Therefore the escapes are present in the second step 2832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project when decoding the RVL-coded-scalefactor values in forward and 2842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project backward direction. 2852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project When the RVL-coded scalefactors are decoded and there a escape is 2872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project needed, then it is just taken out of the array in ascending order. 2882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2. It's faster. 2902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 2912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project input: - pointer rvlc structure 2922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - handle to FDK bitstream 2932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 2942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return: - 0 ok the decoded escapes seem to be valid 2952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - 1 error there was a error detected during decoding escapes 2962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project --> all escapes are invalid 2972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project-------------------------------------------------------------------------------------------- */ 2982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic 3002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid rvlcDecodeEscapes (CErRvlcInfo *pRvlc, 3012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *pEsc, 3022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM bs) 3032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SCHAR escWord; 3052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SCHAR escCnt=0; 3062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT* pEscBitCntSum; 3072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pEscBitCntSum = &(pRvlc->length_of_rvlc_escapes); 3092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Decode all RVLC-Escape words with a plain Huffman-Decoder */ 3112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while ( *pEscBitCntSum > 0 ) { 3122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project escWord = rvlcDecodeEscapeWord(pRvlc, bs); 3132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (escWord >= 0) { 3152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pEsc[escCnt] = escWord; 3172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project escCnt++; 3182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 3202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->errorLogRvlc |= RVLC_ERROR_ALL_ESCAPE_WORDS_INVALID; 3212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->numDecodedEscapeWordsEsc = escCnt; 3222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 3242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } /* all RVLC escapes decoded */ 3262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->numDecodedEscapeWordsEsc = escCnt; 3282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 3292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*--------------------------------------------------------------------------------------------- 3322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project function: decodeRVLCodeword 3332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project description: Decodes a RVL-coded dpcm-word (-part). 3352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 3362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project input: - FDK bitstream handle 3372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer rvlc structure 3382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 3392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return: - a dpcm value which is within range [0,1,..,14] in case of no errors. 3402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project The offset of 7 must be subtracted to get a valid dpcm scalefactor value. 3412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project In case of errors a forbidden codeword is detected --> returning -1 3422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project-------------------------------------------------------------------------------------------- */ 3432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3442228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSCHAR decodeRVLCodeword (HANDLE_FDK_BITSTREAM bs, CErRvlcInfo *pRvlc) 3452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i; 3472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SCHAR value; 3482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR carryBit; 3492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT branchValue; 3502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT branchNode; 3512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT *pRvlCodeTree = pRvlc->pHuffTreeRvlCodewds; 3532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR direction = pRvlc->direction; 3542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT *pBitstrIndxRvl = pRvlc->pBitstrIndxRvl_RVL; 3552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT treeNode = *pRvlCodeTree; 3562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=MAX_LEN_RVLC_CODE_WORD-1; i >= 0; i--) { 3582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project carryBit = rvlcReadBitFromBitstream(bs, /* get next bit */ 3592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pBitstrIndxRvl, 3602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project direction); 3612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CarryBitToBranchValue(carryBit, /* huffman decoding, do a single step in huffman decoding tree */ 3632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project treeNode, 3642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &branchValue, 3652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &branchNode); 3662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((branchNode & TEST_BIT_10) == TEST_BIT_10) { /* test bit 10 ; if set --> a RVLC-codeword is completely decoded */ 3682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project value = (SCHAR) (branchNode & CLR_BIT_10); 3692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *pRvlc->pRvlBitCnt_RVL -= (MAX_LEN_RVLC_CODE_WORD - i); 3702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* check available bits for decoding */ 3722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (*pRvlc->pRvlBitCnt_RVL < 0) { 3732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (direction == FWD) { 3742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->errorLogRvlc |= RVLC_ERROR_RVL_SUM_BIT_COUNTER_BELOW_ZERO_FWD; } 3752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 3762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->errorLogRvlc |= RVLC_ERROR_RVL_SUM_BIT_COUNTER_BELOW_ZERO_BWD; } 3772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project value = -1; /* signalize an error in return value, because too many bits was decoded */ 3782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* check max value of dpcm value */ 3812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (value > MAX_ALLOWED_DPCM_INDEX) { 3822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (direction == FWD) { 3832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->errorLogRvlc |= RVLC_ERROR_FORBIDDEN_CW_DETECTED_FWD; 3842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 3862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->errorLogRvlc |= RVLC_ERROR_FORBIDDEN_CW_DETECTED_BWD; 3872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project value = -1; /* signalize an error in return value, because a forbidden cw was detected*/ 3892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return value; /* return a dpcm value with offset +7 or an error status */ 3922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 3942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project treeNode = *(pRvlCodeTree + branchValue); /* update treeNode for further step in decoding tree */ 3952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return -1; 3992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 4002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*--------------------------------------------------------------------------------------------- 4032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project function: rvlcDecodeForward 4042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project description: Decode RVL-coded codewords in forward direction. 4062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 4072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project input: - pointer rvlc structure 4082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer channel info structure 4092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - handle to FDK bitstream 4102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 4112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return: - 4122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project-------------------------------------------------------------------------------------------- */ 4132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic 4152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid rvlcDecodeForward (CErRvlcInfo *pRvlc, 4162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CAacDecoderChannelInfo *pAacDecoderChannelInfo, 4172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM bs) 4182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 4192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int band = 0; 4202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int group = 0; 4212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int bnds = 0; 4222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT dpcm; 4242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT factor = pAacDecoderChannelInfo->pDynData->RawDataInfo.GlobalGain - SF_OFFSET; 4262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT position = - SF_OFFSET; 4272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT noisenrg = pAacDecoderChannelInfo->pDynData->RawDataInfo.GlobalGain - SF_OFFSET - 90 - 256; 4282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT* pScfFwd = pAacDecoderChannelInfo->pComData->overlay.aac.aRvlcScfFwd; 4302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT* pScfEsc = pAacDecoderChannelInfo->pComData->overlay.aac.aRvlcScfEsc; 4312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR* pEscFwdCnt = &(pRvlc->numDecodedEscapeWordsFwd); 4322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->pRvlBitCnt_RVL = &(pRvlc->length_of_rvlc_sf_fwd); 4342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->pBitstrIndxRvl_RVL = &(pRvlc->bitstreamIndexRvlFwd); 4352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *pEscFwdCnt = 0; 4372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->direction = FWD; 4382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->noise_used = 0; 4392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->sf_used = 0; 4402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->lastScf = 0; 4412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->lastNrg = 0; 4422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->lastIs = 0; 4432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rvlcCheckIntensityCb(pRvlc,pAacDecoderChannelInfo); 4452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* main loop fwd long */ 4472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (group=0; group < pRvlc->numWindowGroups; group++) { 4482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (band=0; band < pRvlc->maxSfbTransmitted; band++) { 4492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bnds = 16*group+band; 4502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project switch (pAacDecoderChannelInfo->pDynData->aCodeBook[bnds]) { 4522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case ZERO_HCB : 4542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfFwd[bnds] = 0; 4552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 4562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case INTENSITY_HCB2 : 4582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case INTENSITY_HCB : 4592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* store dpcm_is_position */ 4602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm = decodeRVLCodeword(bs, pRvlc); 4612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( dpcm < 0 ) { 4622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max = bnds; 4632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 4642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= TABLE_OFFSET; 4662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((dpcm == MIN_RVL) || (dpcm == MAX_RVL)) { 4672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_escapes) { 4682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max = bnds; 4692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 4702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 4722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (dpcm == MIN_RVL) { 4732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= *pScfEsc++; 4742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 4762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm += *pScfEsc++; 4772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (*pEscFwdCnt)++; 4792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->conceal_max_esc == CONCEAL_MAX_INIT) { 4802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max_esc = bnds; 4812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project position += dpcm; 4852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfFwd[bnds] = position; 4862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->lastIs = position; 4872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 4882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case NOISE_HCB : 4902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->noise_used == 0) { 4912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->noise_used = 1; 4922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->first_noise_band = bnds; 4932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project noisenrg += pRvlc->dpcm_noise_nrg; 4942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfFwd[bnds] = 100 + noisenrg; 4952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->lastNrg = noisenrg; 4962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 4982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm = decodeRVLCodeword(bs, pRvlc); 4992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( dpcm < 0 ) { 5002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max = bnds; 5012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 5022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= TABLE_OFFSET; 5042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((dpcm == MIN_RVL) || (dpcm == MAX_RVL)) { 5052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_escapes) { 5062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max = bnds; 5072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 5082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 5102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (dpcm == MIN_RVL) { 5112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= *pScfEsc++; 5122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 5142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm += *pScfEsc++; 5152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (*pEscFwdCnt)++; 5172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->conceal_max_esc == CONCEAL_MAX_INIT) { 5182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max_esc = bnds; 5192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project noisenrg += dpcm; 5232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfFwd[bnds] = 100 + noisenrg; 5242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->lastNrg = noisenrg; 5252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderChannelInfo->data.aac.PnsData.pnsUsed[bnds] = 1; 5272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break ; 5282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project default : 5302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->sf_used = 1; 5312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm = decodeRVLCodeword(bs, pRvlc); 5322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( dpcm < 0 ) { 5332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max = bnds; 5342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 5352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= TABLE_OFFSET; 5372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((dpcm == MIN_RVL) || (dpcm == MAX_RVL)) { 5382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_escapes) { 5392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max = bnds; 5402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 5412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 5432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (dpcm == MIN_RVL) { 5442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= *pScfEsc++; } 5452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 5462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm += *pScfEsc++; 5472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (*pEscFwdCnt)++; 5492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->conceal_max_esc == CONCEAL_MAX_INIT) { 5502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max_esc = bnds; 5512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project factor += dpcm; 5552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfFwd[bnds] = factor; 5562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->lastScf = factor; 5572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 5582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* postfetch fwd long */ 5632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->intensity_used) { 5642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm = decodeRVLCodeword(bs, pRvlc); /* dpcm_is_last_position */ 5652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( dpcm < 0 ) { 5662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max = bnds; 5672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 5682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= TABLE_OFFSET; 5702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((dpcm == MIN_RVL) || (dpcm == MAX_RVL)) { 5712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_escapes) { 5722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max = bnds; 5732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 5742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 5762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (dpcm == MIN_RVL) { 5772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= *pScfEsc++; 5782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 5802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm += *pScfEsc++; 5812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (*pEscFwdCnt)++; 5832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->conceal_max_esc == CONCEAL_MAX_INIT) { 5842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max_esc = bnds; 5852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->dpcm_is_last_position = dpcm; 5892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 5912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*--------------------------------------------------------------------------------------------- 5942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project function: rvlcDecodeBackward 5952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project description: Decode RVL-coded codewords in backward direction. 5972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 5982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project input: - pointer rvlc structure 5992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer channel info structure 6002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - handle FDK bitstream 6012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 6022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return: - 6032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project-------------------------------------------------------------------------------------------- */ 6042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic 6062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid rvlcDecodeBackward (CErRvlcInfo *pRvlc, 6072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CAacDecoderChannelInfo *pAacDecoderChannelInfo, 6082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM bs) 6092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 6102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT band, group, dpcm, offset; 6112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT bnds = pRvlc->maxSfbTransmitted-1; 6122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT factor = pRvlc->rev_global_gain - SF_OFFSET; 6142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT position = pRvlc->dpcm_is_last_position - SF_OFFSET; 6152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT noisenrg = pRvlc->rev_global_gain + pRvlc->dpcm_noise_last_position - SF_OFFSET - 90 - 256; 6162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *pScfBwd = pAacDecoderChannelInfo->pComData->overlay.aac.aRvlcScfBwd; 6182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *pScfEsc = pAacDecoderChannelInfo->pComData->overlay.aac.aRvlcScfEsc; 6192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR *pEscEscCnt = &(pRvlc->numDecodedEscapeWordsEsc); 6202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR *pEscBwdCnt = &(pRvlc->numDecodedEscapeWordsBwd); 6212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->pRvlBitCnt_RVL = &(pRvlc->length_of_rvlc_sf_bwd); 6232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->pBitstrIndxRvl_RVL = &(pRvlc->bitstreamIndexRvlBwd); 6242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *pEscBwdCnt = 0; 6262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->direction = BWD; 6272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfEsc += *pEscEscCnt - 1; /* set pScfEsc to last entry */ 6282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->firstScf = 0; 6292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->firstNrg = 0; 6302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->firstIs = 0; 6312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* prefetch long BWD */ 6332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->intensity_used) { 6342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm = decodeRVLCodeword(bs, pRvlc); /* dpcm_is_last_position */ 6352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( dpcm < 0 ) { 6362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->dpcm_is_last_position = 0; 6372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min = bnds; 6382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 6392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= TABLE_OFFSET; 6412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((dpcm == MIN_RVL) || (dpcm == MAX_RVL)) { 6422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_escapes) { 6432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min = bnds; 6442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 6452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 6472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (dpcm == MIN_RVL) { 6482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= *pScfEsc--; 6492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 6512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm += *pScfEsc--; 6522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (*pEscBwdCnt)++; 6542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->conceal_min_esc == CONCEAL_MIN_INIT) { 6552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min_esc = bnds; 6562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->dpcm_is_last_position = dpcm; 6602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* main loop long BWD */ 6632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (group=pRvlc->numWindowGroups-1; group >= 0; group--) { 6642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (band=pRvlc->maxSfbTransmitted-1; band >= 0; band--) { 6652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bnds = 16*group+band; 6662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((band == 0) && (pRvlc->numWindowGroups != 1)) 6672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project offset = 16 - pRvlc->maxSfbTransmitted + 1; 6682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else 6692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project offset = 1; 6702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project switch (pAacDecoderChannelInfo->pDynData->aCodeBook[bnds]) { 6722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case ZERO_HCB : 6742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = 0; 6752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 6762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case INTENSITY_HCB2 : 6782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case INTENSITY_HCB : 6792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* store dpcm_is_position */ 6802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm = decodeRVLCodeword(bs, pRvlc); 6812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( dpcm < 0 ) { 6822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = position; 6832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min = FDKmax(0,bnds-offset); 6842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 6852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= TABLE_OFFSET; 6872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((dpcm == MIN_RVL) || (dpcm == MAX_RVL)) { 6882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_escapes) { 6892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = position; 6902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min = FDKmax(0,bnds-offset); 6912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 6922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 6942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (dpcm == MIN_RVL) { 6952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= *pScfEsc--; 6962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 6982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm += *pScfEsc--; 6992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (*pEscBwdCnt)++; 7012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->conceal_min_esc == CONCEAL_MIN_INIT) { 7022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min_esc = FDKmax(0,bnds-offset); 7032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = position; 7072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project position -= dpcm; 7082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->firstIs = position; 7092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 7102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case NOISE_HCB : 7122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( bnds == pRvlc->first_noise_band ) { 7132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = pRvlc->dpcm_noise_nrg + pAacDecoderChannelInfo->pDynData->RawDataInfo.GlobalGain - SF_OFFSET - 90 - 256; 7142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->firstNrg = pScfBwd[bnds]; 7152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 7172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm = decodeRVLCodeword(bs, pRvlc); 7182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( dpcm < 0 ) { 7192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = noisenrg; 7202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min = FDKmax(0,bnds-offset); 7212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 7222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= TABLE_OFFSET; 7242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((dpcm == MIN_RVL) || (dpcm == MAX_RVL)) { 7252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_escapes) { 7262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = noisenrg; 7272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min = FDKmax(0,bnds-offset); 7282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 7292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 7312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (dpcm == MIN_RVL) { 7322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= *pScfEsc--; 7332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 7352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm += *pScfEsc--; 7362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (*pEscBwdCnt)++; 7382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->conceal_min_esc == CONCEAL_MIN_INIT) { 7392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min_esc = FDKmax(0,bnds-offset); 7402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = noisenrg; 7442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project noisenrg -= dpcm; 7452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->firstNrg = noisenrg; 7462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break ; 7482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project default : 7502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm = decodeRVLCodeword(bs, pRvlc); 7512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( dpcm < 0 ) { 7522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = factor; 7532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min = FDKmax(0,bnds-offset); 7542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 7552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= TABLE_OFFSET; 7572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((dpcm == MIN_RVL) || (dpcm == MAX_RVL)) { 7582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_escapes) { 7592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = factor; 7602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min = FDKmax(0,bnds-offset); 7612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 7622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 7642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (dpcm == MIN_RVL) { 7652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm -= *pScfEsc--; 7662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 7682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dpcm += *pScfEsc--; 7692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (*pEscBwdCnt)++; 7712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->conceal_min_esc == CONCEAL_MIN_INIT) { 7722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min_esc = FDKmax(0,bnds-offset); 7732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pScfBwd[bnds] = factor; 7772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project factor -= dpcm; 7782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->firstScf = factor; 7792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 7802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 7842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*--------------------------------------------------------------------------------------------- 7872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project function: rvlcFinalErrorDetection 7882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project description: Call RVLC concealment if error was detected in decoding process 7902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 7912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project input: - pointer rvlc structure 7922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer channel info structure 7932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 7942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return: - 7952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project-------------------------------------------------------------------------------------------- */ 7962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic 7982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid rvlcFinalErrorDetection (CAacDecoderChannelInfo *pAacDecoderChannelInfo, 7992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo) 8002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 8012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CErRvlcInfo *pRvlc = &pAacDecoderChannelInfo->pComData->overlay.aac.erRvlcInfo; 8022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusComplete = 0; 8032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusLengthFwd = 0; 8042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusLengthBwd = 0; 8052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusLengthEscapes = 0; 8062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusFirstScf = 0; 8072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusLastScf = 0; 8082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusFirstNrg = 0; 8092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusLastNrg = 0; 8102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusFirstIs = 0; 8112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusLastIs = 0; 8122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusForbiddenCwFwd = 0; 8132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusForbiddenCwBwd = 0; 8142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusNumEscapesFwd = 0; 8152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ErrorStatusNumEscapesBwd = 0; 8162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR ConcealStatus = 1; 8172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR currentBlockType; /* short: 0, not short: 1*/ 8182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if VERBOSE_RVLC_OUTPUT 8202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CHAR Strategy[60]="No"; 8212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT conceal_max; 8222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT conceal_min; 8232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 8242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderChannelInfo->pDynData->specificTo.aac.rvlcCurrentScaleFactorOK = 1; 8262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* invalid escape words, bit counter unequal zero, forbidden codeword detected */ 8282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->errorLogRvlc & RVLC_ERROR_FORBIDDEN_CW_DETECTED_FWD) 8292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusForbiddenCwFwd = 1; 8302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->errorLogRvlc & RVLC_ERROR_FORBIDDEN_CW_DETECTED_BWD) 8322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusForbiddenCwBwd = 1; 8332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* bit counter forward unequal zero */ 8352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_sf_fwd) 8362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusLengthFwd = 1; 8372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* bit counter backward unequal zero */ 8392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_sf_bwd) 8402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusLengthBwd = 1; 8412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* bit counter escape sequences unequal zero */ 8432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->sf_escapes_present) 8442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->length_of_rvlc_escapes) 8452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusLengthEscapes = 1; 8462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->sf_used) { 8482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* first decoded scf does not match to global gain in backward direction */ 8492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->firstScf != (pAacDecoderChannelInfo->pDynData->RawDataInfo.GlobalGain - SF_OFFSET) ) 8502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusFirstScf = 1; 8512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* last decoded scf does not match to rev global gain in forward direction */ 8532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->lastScf != (pRvlc->rev_global_gain - SF_OFFSET) ) 8542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusLastScf = 1; 8552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->noise_used) { 8582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* first decoded nrg does not match to dpcm_noise_nrg in backward direction */ 8592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->firstNrg != (pAacDecoderChannelInfo->pDynData->RawDataInfo.GlobalGain + pRvlc->dpcm_noise_nrg - SF_OFFSET -90 - 256) ) 8602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusFirstNrg = 1; 8612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* last decoded nrg does not match to dpcm_noise_last_position in forward direction */ 8632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->lastNrg != (pRvlc->rev_global_gain + pRvlc->dpcm_noise_last_position - SF_OFFSET - 90 - 256) ) 8642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusLastNrg = 1; 8652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->intensity_used) { 8682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* first decoded is position does not match in backward direction */ 8692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->firstIs != (-SF_OFFSET) ) 8702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusFirstIs = 1; 8712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* last decoded is position does not match in forward direction */ 8732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->lastIs != (pRvlc->dpcm_is_last_position - SF_OFFSET) ) 8742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusLastIs = 1; 8752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* decoded escapes and used escapes in forward direction do not fit */ 8782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((pRvlc->numDecodedEscapeWordsFwd != pRvlc->numDecodedEscapeWordsEsc) && (pRvlc->conceal_max == CONCEAL_MAX_INIT)) { 8792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusNumEscapesFwd = 1; 8802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* decoded escapes and used escapes in backward direction do not fit */ 8832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((pRvlc->numDecodedEscapeWordsBwd != pRvlc->numDecodedEscapeWordsEsc) && (pRvlc->conceal_min == CONCEAL_MIN_INIT)) { 8842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusNumEscapesBwd = 1; 8852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if VERBOSE_RVLC_OUTPUT 8882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project conceal_max = pRvlc->conceal_max; 8892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project conceal_min = pRvlc->conceal_min; 8902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 8912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( ErrorStatusLengthEscapes 8932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project || ( 8942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ( (pRvlc->conceal_max == CONCEAL_MAX_INIT) 8952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && (pRvlc->numDecodedEscapeWordsFwd != pRvlc->numDecodedEscapeWordsEsc) 8962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && (ErrorStatusLastScf || ErrorStatusLastNrg || ErrorStatusLastIs) ) 8972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && 8992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ( (pRvlc->conceal_min == CONCEAL_MIN_INIT) 9012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && (pRvlc->numDecodedEscapeWordsBwd != pRvlc->numDecodedEscapeWordsEsc) 9022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && (ErrorStatusFirstScf || ErrorStatusFirstNrg || ErrorStatusFirstIs) ) 9032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 9042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project || ( (pRvlc->conceal_max == CONCEAL_MAX_INIT) 9052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && ((pRvlc->rev_global_gain - SF_OFFSET - pRvlc->lastScf) < -15) 9062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 9072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project || ( (pRvlc->conceal_min == CONCEAL_MIN_INIT) 9082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && ((pAacDecoderChannelInfo->pDynData->RawDataInfo.GlobalGain - SF_OFFSET - pRvlc->firstScf) < -15) 9092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 9102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) { 9112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((pRvlc->conceal_max == CONCEAL_MAX_INIT) || (pRvlc->conceal_min == CONCEAL_MIN_INIT)) { 9122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max = 0; 9132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min = FDKmax(0, (pRvlc->numWindowGroups-1)*16+pRvlc->maxSfbTransmitted-1); 9142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 9162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_max = FDKmin(pRvlc->conceal_max,pRvlc->conceal_max_esc); 9172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->conceal_min = FDKmax(pRvlc->conceal_min,pRvlc->conceal_min_esc); 9182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusComplete = ErrorStatusLastScf || ErrorStatusFirstScf || ErrorStatusLastNrg || ErrorStatusFirstNrg 9222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project || ErrorStatusLastIs || ErrorStatusFirstIs || ErrorStatusForbiddenCwFwd || ErrorStatusForbiddenCwBwd 9232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project || ErrorStatusLengthFwd || ErrorStatusLengthBwd || ErrorStatusLengthEscapes || ErrorStatusNumEscapesFwd 9242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project || ErrorStatusNumEscapesBwd; 9252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project currentBlockType = (GetWindowSequence(&pAacDecoderChannelInfo->icsInfo) == EightShortSequence) ? 0 : 1; 9272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (!ErrorStatusComplete) { 9302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int band; 9312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int group; 9322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int bnds; 9332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int lastSfbIndex; 9342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastSfbIndex = (pRvlc->numWindowGroups > 1) ? 16 : 64; 9362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (group=0; group < pRvlc->numWindowGroups; group++) { 9382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (band=0; band<pRvlc->maxSfbTransmitted; band++) { 9392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bnds = 16*group+band; 9402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderChannelInfo->pDynData->aScaleFactor[bnds] = pAacDecoderStaticChannelInfo->concealmentInfo.aRvlcPreviousScaleFactor[bnds] = pAacDecoderChannelInfo->pComData->overlay.aac.aRvlcScfFwd[bnds]; 9412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (group=0; group < pRvlc->numWindowGroups; group++) 9452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 9462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (band=0; band<pRvlc->maxSfbTransmitted; band++) { 9472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bnds = 16*group+band; 9482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderStaticChannelInfo->concealmentInfo.aRvlcPreviousCodebook[bnds] = pAacDecoderChannelInfo->pDynData->aCodeBook[bnds]; 9492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (; band <lastSfbIndex; band++) { 9512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bnds = 16*group+band; 9522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDK_ASSERT(bnds >= 0 && bnds < RVLC_MAX_SFB); 9532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderStaticChannelInfo->concealmentInfo.aRvlcPreviousCodebook[bnds] = ZERO_HCB; 9542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 9582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int band; 9592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int group; 9602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* A single bit error was detected in decoding of dpcm values. It also could be an error with more bits in decoding 9622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project of escapes and dpcm values whereby an illegal codeword followed not directly after the corrupted bits but just 9632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project after decoding some more (wrong) scalefactors. Use the smaller scalefactor from forward decoding, backward decoding 9642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project and previous frame. */ 9652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( ((pRvlc->conceal_min != CONCEAL_MIN_INIT) || (pRvlc->conceal_max != CONCEAL_MAX_INIT)) && (pRvlc->conceal_min <= pRvlc->conceal_max) 9662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && (pAacDecoderStaticChannelInfo->concealmentInfo.rvlcPreviousBlockType == currentBlockType) && pAacDecoderStaticChannelInfo->concealmentInfo.rvlcPreviousScaleFactorOK 9672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && pRvlc->sf_concealment && ConcealStatus ) 9682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 9692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project BidirectionalEstimation_UseScfOfPrevFrameAsReference (pAacDecoderChannelInfo, pAacDecoderStaticChannelInfo); 9702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ConcealStatus=0; 9712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if VERBOSE_RVLC_OUTPUT 9722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKstrcpy(Strategy,"Yes (BidirectionalEstimation_UseScfOfPrevFrameAsReference)"); 9732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 9742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* A single bit error was detected in decoding of dpcm values. It also could be an error with more bits in decoding 9772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project of escapes and dpcm values whereby an illegal codeword followed not directly after the corrupted bits but just 9782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project after decoding some more (wrong) scalefactors. Use the smaller scalefactor from forward and backward decoding. */ 9792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (pRvlc->conceal_min <= pRvlc->conceal_max) && ((pRvlc->conceal_min != CONCEAL_MIN_INIT) || (pRvlc->conceal_max != CONCEAL_MAX_INIT)) 9802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && !(pAacDecoderStaticChannelInfo->concealmentInfo.rvlcPreviousScaleFactorOK && pRvlc->sf_concealment && (pAacDecoderStaticChannelInfo->concealmentInfo.rvlcPreviousBlockType == currentBlockType)) 9812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && ConcealStatus ) 9822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 9832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project BidirectionalEstimation_UseLowerScfOfCurrentFrame (pAacDecoderChannelInfo); 9842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ConcealStatus=0; 9852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if VERBOSE_RVLC_OUTPUT 9862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKstrcpy(Strategy,"Yes (BidirectionalEstimation_UseLowerScfOfCurrentFrame)"); 9872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 9882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* No errors were detected in decoding of escapes and dpcm values however the first and last value 9912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project of a group (is,nrg,sf) is incorrect */ 9922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (pRvlc->conceal_min <= pRvlc->conceal_max) && ((ErrorStatusLastScf && ErrorStatusFirstScf) 9932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project || (ErrorStatusLastNrg && ErrorStatusFirstNrg) || (ErrorStatusLastIs && ErrorStatusFirstIs)) 9942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && !(ErrorStatusForbiddenCwFwd || ErrorStatusForbiddenCwBwd || ErrorStatusLengthEscapes ) && ConcealStatus) 9952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 9962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project StatisticalEstimation (pAacDecoderChannelInfo); 9972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ConcealStatus=0; 9982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if VERBOSE_RVLC_OUTPUT 9992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKstrcpy(Strategy,"Yes (StatisticalEstimation)"); 10002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 10012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* A error with more bits in decoding of escapes and dpcm values was detected. Use the smaller scalefactor from forward 10042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project decoding, backward decoding and previous frame. */ 10052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (pRvlc->conceal_min <= pRvlc->conceal_max) && pAacDecoderStaticChannelInfo->concealmentInfo.rvlcPreviousScaleFactorOK && pRvlc->sf_concealment 10062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && (pAacDecoderStaticChannelInfo->concealmentInfo.rvlcPreviousBlockType == currentBlockType) && ConcealStatus ) 10072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 10082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project PredictiveInterpolation(pAacDecoderChannelInfo, pAacDecoderStaticChannelInfo); 10092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ConcealStatus=0; 10102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if VERBOSE_RVLC_OUTPUT 10112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKstrcpy(Strategy,"Yes (PredictiveInterpolation)"); 10122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 10132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Call frame concealment, because no better strategy was found. Setting the scalefactors to zero is done for debugging 10162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project purposes */ 10172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (ConcealStatus) { 10182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (group=0; group < pRvlc->numWindowGroups; group++) { 10192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (band=0; band<pRvlc->maxSfbTransmitted; band++) { 10202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderChannelInfo->pDynData->aScaleFactor[16*group+band] = 0; 10212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderChannelInfo->pDynData->specificTo.aac.rvlcCurrentScaleFactorOK = 0; 10242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if VERBOSE_RVLC_OUTPUT 10252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKstrcpy(Strategy,"Yes (FrameConcealment)"); 10262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 10272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if VERBOSE_RVLC_OUTPUT 10312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project DebugOutputDistortedBitstreams(pRvlc,pAacDecoderChannelInfo,ErrorStatusLengthFwd,ErrorStatusLengthBwd, 10322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusLengthEscapes,ErrorStatusFirstScf,ErrorStatusLastScf, 10332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusFirstNrg,ErrorStatusLastNrg,ErrorStatusFirstIs,ErrorStatusLastIs, 10342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusForbiddenCwFwd,ErrorStatusForbiddenCwBwd,ErrorStatusNumEscapesFwd, 10352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ErrorStatusNumEscapesBwd,conceal_max,conceal_min,Strategy); 10362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 10372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 10382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*--------------------------------------------------------------------------------------------- 10412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project function: CRvlc_Read 10422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project description: Read RVLC ESC1 data (side info) from bitstream. 10442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 10452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project input: - pointer rvlc structure 10462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer channel info structure 10472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer bitstream structure 10482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 10492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return: - 10502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project-------------------------------------------------------------------------------------------- */ 10512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid CRvlc_Read ( 10532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CAacDecoderChannelInfo *pAacDecoderChannelInfo, 10542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM bs) 10552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 10562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CErRvlcInfo *pRvlc = &pAacDecoderChannelInfo->pComData->overlay.aac.erRvlcInfo; 10572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int group,band; 10592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* RVLC long specific initialization Init part 1 of 2 */ 10612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->numWindowGroups = GetWindowGroups(&pAacDecoderChannelInfo->icsInfo); 10622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->maxSfbTransmitted = GetScaleFactorBandsTransmitted(&pAacDecoderChannelInfo->icsInfo); 10632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->noise_used = 0; /* noise detection */ 10642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->dpcm_noise_nrg = 0; /* only for debugging */ 10652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->dpcm_noise_last_position = 0; /* only for debugging */ 10662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->length_of_rvlc_escapes = -1; /* default value is used for error detection and concealment */ 10672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* read only error sensitivity class 1 data (ESC 1 - data) */ 10692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->sf_concealment = FDKreadBits(bs,1); /* #1 */ 10702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->rev_global_gain = FDKreadBits(bs,8); /* #2 */ 10712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (GetWindowSequence(&pAacDecoderChannelInfo->icsInfo) == EightShortSequence) { 10732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->length_of_rvlc_sf = FDKreadBits(bs,11); /* #3 */ 10742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 10762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->length_of_rvlc_sf = FDKreadBits(bs,9); /* #3 */ 10772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* check if noise codebook is used */ 10802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (group = 0; group < pRvlc->numWindowGroups; group++) { 10812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (band=0; band < pRvlc->maxSfbTransmitted; band++) { 10822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pAacDecoderChannelInfo->pDynData->aCodeBook[16*group+band] == NOISE_HCB) { 10832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->noise_used = 1; 10842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 10852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->noise_used) 10902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->dpcm_noise_nrg = FDKreadBits(bs, 9); /* #4 PNS */ 10912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->sf_escapes_present = FDKreadBits(bs, 1); /* #5 */ 10932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( pRvlc->sf_escapes_present) { 10952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->length_of_rvlc_escapes = FDKreadBits(bs, 8); /* #6 */ 10962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->noise_used) { 10992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->dpcm_noise_last_position = FDKreadBits(bs, 9); /* #7 PNS */ 11002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->length_of_rvlc_sf -= 9; 11012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 11022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->length_of_rvlc_sf_fwd = pRvlc->length_of_rvlc_sf; 11042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->length_of_rvlc_sf_bwd = pRvlc->length_of_rvlc_sf; 11052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 11062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*--------------------------------------------------------------------------------------------- 11092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project function: CRvlc_Decode 11102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project description: Decode rvlc data 11122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project The function reads both the escape sequences and the scalefactors in forward 11132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project and backward direction. If an error occured during decoding process which can 11142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project not be concealed with the rvlc concealment frame concealment will be initiated. 11152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Then the element "rvlcCurrentScaleFactorOK" in the decoder channel info is set 11162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project to 0 otherwise it is set to 1. 11172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 11182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project input: - pointer rvlc structure 11192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer channel info structure 11202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer to persistent channel info structure 11212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project - pointer bitstream structure 11222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------- 11232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return: ErrorStatus = AAC_DEC_OK 11242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project-------------------------------------------------------------------------------------------- */ 11252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid CRvlc_Decode ( 11272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CAacDecoderChannelInfo *pAacDecoderChannelInfo, 11282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo, 11292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FDK_BITSTREAM bs 11302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 11312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 11322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CErRvlcInfo *pRvlc = &pAacDecoderChannelInfo->pComData->overlay.aac.erRvlcInfo; 11332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT bitCntOffst; 11342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT saveBitCnt; 11352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rvlcInit(pRvlc,pAacDecoderChannelInfo,bs); 11372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* save bitstream position */ 11392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project saveBitCnt = FDKgetBitCnt(bs); 11402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if RVLC_ADVANCED_BITSTREAM_ERROR_GENERATOR_SF 11422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project GenerateSingleBitError(pRvlc, 11432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &(pRvlc->bitstreamIndexRvlFwd), 11442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->length_of_rvlc_sf, 11452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 0); 11462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 11472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if RVLC_ADVANCED_BITSTREAM_ERROR_GENERATOR_ESC 11492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pRvlc->sf_escapes_present) 11502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project GenerateSingleBitError(pRvlc, 11512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &(pRvlc->bitstreamIndexEsc), 11522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pRvlc->length_of_rvlc_escapes, 11532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1); 11542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 11552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( pRvlc->sf_escapes_present) 11572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rvlcDecodeEscapes(pRvlc, pAacDecoderChannelInfo->pComData->overlay.aac.aRvlcScfEsc, bs); 11582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rvlcDecodeForward(pRvlc,pAacDecoderChannelInfo, bs); 11602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rvlcDecodeBackward(pRvlc,pAacDecoderChannelInfo, bs); 11612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project rvlcFinalErrorDetection(pAacDecoderChannelInfo, pAacDecoderStaticChannelInfo); 11622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderChannelInfo->pDynData->specificTo.aac.rvlcIntensityUsed = pRvlc->intensity_used; 11642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderChannelInfo->data.aac.PnsData.PnsActive = pRvlc->noise_used; 11652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* restore bitstream position */ 11672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bitCntOffst = saveBitCnt - FDKgetBitCnt(bs); 11682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if( bitCntOffst ) { 11692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKpushBiDirectional(bs, bitCntOffst); 11702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 11712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 11722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid CRvlc_ElementCheck ( 11742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CAacDecoderChannelInfo *pAacDecoderChannelInfo[], 11752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[], 11762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT flags, 11772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT elChannels 11782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 11792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 11802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int ch; 11812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Required for MPS residuals. */ 11832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (pAacDecoderStaticChannelInfo == NULL) { 11842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 11852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 11862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* RVLC specific sanity checks */ 11882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (flags & AC_ER_RVLC) && (elChannels == 2)) { /* to be reviewed */ 11892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( ( (pAacDecoderChannelInfo[0]->pDynData->specificTo.aac.rvlcCurrentScaleFactorOK == 0) || 11902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (pAacDecoderChannelInfo[1]->pDynData->specificTo.aac.rvlcCurrentScaleFactorOK == 0) ) 11912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && pAacDecoderChannelInfo[0]->pComData->jointStereoData.MsMaskPresent ) { 11922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderChannelInfo[0]->pDynData->specificTo.aac.rvlcCurrentScaleFactorOK = 0; 11932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderChannelInfo[1]->pDynData->specificTo.aac.rvlcCurrentScaleFactorOK = 0; 11942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 11952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (pAacDecoderChannelInfo[0]->pDynData->specificTo.aac.rvlcCurrentScaleFactorOK == 0) 11972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && (pAacDecoderChannelInfo[1]->pDynData->specificTo.aac.rvlcCurrentScaleFactorOK == 1) 11982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project && (pAacDecoderChannelInfo[1]->pDynData->specificTo.aac.rvlcIntensityUsed == 1) ){ 11992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderChannelInfo[1]->pDynData->specificTo.aac.rvlcCurrentScaleFactorOK = 0; 12002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (ch = 0; ch < elChannels; ch ++) 12042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 12052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderStaticChannelInfo[ch]->concealmentInfo.rvlcPreviousBlockType = (GetWindowSequence(&pAacDecoderChannelInfo[ch]->icsInfo) == EightShortSequence) ? 0 : 1; 12062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (flags & AC_ER_RVLC) { 12072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderStaticChannelInfo[ch]->concealmentInfo.rvlcPreviousScaleFactorOK = pAacDecoderChannelInfo[ch]->pDynData->specificTo.aac.rvlcCurrentScaleFactorOK; 12082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 12102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pAacDecoderStaticChannelInfo[ch]->concealmentInfo.rvlcPreviousScaleFactorOK = 0; 12112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 12142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1216