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/******************************** MPEG Audio Encoder ************************** 852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Initial author: M. Werner 872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project contents/description: Scale factor estimation 882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project******************************************************************************/ 902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "sf_estim.h" 922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "aacEnc_rom.h" 932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "quantize.h" 942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "bit_cnt.h" 952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#define AS_PE_FAC_SHIFT 7 1002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#define DIST_FAC_SHIFT 3 1012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#define AS_PE_FAC_FLOAT (float)(1 << AS_PE_FAC_SHIFT) 1022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const INT MAX_SCF_DELTA = 60; 1032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIXP_DBL PE_C1 = FL2FXCONST_DBL(3.0f/AS_PE_FAC_FLOAT); /* (log(8.0)/log(2)) >> AS_PE_FAC_SHIFT */ 1062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIXP_DBL PE_C2 = FL2FXCONST_DBL(1.3219281f/AS_PE_FAC_FLOAT); /* (log(2.5)/log(2)) >> AS_PE_FAC_SHIFT */ 1072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const FIXP_DBL PE_C3 = FL2FXCONST_DBL(0.5593573f); /* 1-C2/C1 */ 1082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 1112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Function; FDKaacEnc_FDKaacEnc_CalcFormFactorChannel 1122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: Calculates the formfactor 1142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sf: scale factor of the mdct spectrum 1162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbFormFactorLdData is scaled with the factor 1/(((2^sf)^0.5) * (2^FORM_FAC_SHIFT)) 1172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 1182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void 1192228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKaacEnc_FDKaacEnc_CalcFormFactorChannel(FIXP_DBL *RESTRICT sfbFormFactorLdData, 1202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project PSY_OUT_CHANNEL *RESTRICT psyOutChan) 1212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT j, sfb, sfbGrp; 1232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL formFactor; 1242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int tmp0 = psyOutChan->sfbCnt; 1262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int tmp1 = psyOutChan->maxSfbPerGroup; 1272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int step = psyOutChan->sfbPerGroup; 1282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(sfbGrp = 0; sfbGrp < tmp0; sfbGrp += step) { 1292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb = 0; sfb < tmp1; sfb++) { 1302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project formFactor = FL2FXCONST_DBL(0.0f); 1312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* calc sum of sqrt(spec) */ 1322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(j=psyOutChan->sfbOffsets[sfbGrp+sfb]; j<psyOutChan->sfbOffsets[sfbGrp+sfb+1]; j++ ) { 1332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project formFactor += sqrtFixp(fixp_abs(psyOutChan->mdctSpectrum[j]))>>FORM_FAC_SHIFT; 1342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbFormFactorLdData[sfbGrp+sfb] = CalcLdData(formFactor); 1362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* set sfbFormFactor for sfbs with zero spec to zero. Just for debugging. */ 1382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for ( ; sfb < psyOutChan->sfbPerGroup; sfb++) { 1392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbFormFactorLdData[sfbGrp+sfb] = FL2FXCONST_DBL(-1.0f); 1402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 1452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Function: FDKaacEnc_CalcFormFactor 1462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: Calls FDKaacEnc_FDKaacEnc_CalcFormFactorChannel() for each channel 1482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 1492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid 1512228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKaacEnc_CalcFormFactor(QC_OUT_CHANNEL *qcOutChannel[(2)], 1522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project PSY_OUT_CHANNEL *psyOutChannel[(2)], 1532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT nChannels) 1542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT j; 1562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (j=0; j<nChannels; j++) { 1572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_FDKaacEnc_CalcFormFactorChannel(qcOutChannel[j]->sfbFormFactorLdData, psyOutChannel[j]); 1582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 1622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Function: FDKaacEnc_calcSfbRelevantLines 1632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: Calculates sfbNRelevantLines 1652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbNRelevantLines is scaled with the factor 1/((2^FORM_FAC_SHIFT) * 2.0) 1672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 1682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void 1692228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKaacEnc_calcSfbRelevantLines( const FIXP_DBL *const sfbFormFactorLdData, 1702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const FIXP_DBL *const sfbEnergyLdData, 1712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const FIXP_DBL *const sfbThresholdLdData, 1722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT *const sfbOffsets, 1732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT sfbCnt, 1742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT sfbPerGroup, 1752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT maxSfbPerGroup, 1762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbNRelevantLines) 1772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfbOffs, sfb; 1792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbWidthLdData; 1802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL asPeFacLdData = FL2FXCONST_DBL(0.109375); /* AS_PE_FAC_SHIFT*ld64(2) */ 1812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL accu; 1822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* sfbNRelevantLines[i] = 2^( (sfbFormFactorLdData[i] - 0.25 * (sfbEnergyLdData[i] - ld64(sfbWidth[i]/(2^7)) - AS_PE_FAC_SHIFT*ld64(2)) * 64); */ 1842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(sfbNRelevantLines, sfbCnt * sizeof(FIXP_DBL)); 1862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfbOffs=0; sfbOffs<sfbCnt; sfbOffs+=sfbPerGroup) { 1882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(sfb=0; sfb<maxSfbPerGroup; sfb++) { 1892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* calc sum of sqrt(spec) */ 1902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if((FIXP_DBL)sfbEnergyLdData[sfbOffs+sfb] > (FIXP_DBL)sfbThresholdLdData[sfbOffs+sfb]) { 1912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfbWidth = sfbOffsets[sfbOffs+sfb+1] - sfbOffsets[sfbOffs+sfb]; 1922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* avgFormFactorLdData = sqrtFixp(sqrtFixp(sfbEnergyLdData[sfbOffs+sfb]/sfbWidth)); */ 1942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* sfbNRelevantLines[sfbOffs+sfb] = sfbFormFactor[sfbOffs+sfb] / avgFormFactorLdData; */ 1952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidthLdData = (FIXP_DBL)(sfbWidth << (DFRACT_BITS-1-AS_PE_FAC_SHIFT)); 1962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidthLdData = CalcLdData(sfbWidthLdData); 1972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project accu = sfbEnergyLdData[sfbOffs+sfb] - sfbWidthLdData - asPeFacLdData; 1992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project accu = sfbFormFactorLdData[sfbOffs+sfb] - (accu >> 2); 2002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbNRelevantLines[sfbOffs+sfb] = CalcInvLdData(accu) >> 1; 2022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 2082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Function: FDKaacEnc_countSingleScfBits 2092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: 2112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfBitsFract is scaled by 1/(2^(2*AS_PE_FAC_SHIFT)) 2132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 2142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic FIXP_DBL FDKaacEnc_countSingleScfBits(INT scf, INT scfLeft, INT scfRight) 2152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL scfBitsFract; 2172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfBitsFract = (FIXP_DBL) ( FDKaacEnc_bitCountScalefactorDelta(scfLeft-scf) 2192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project + FDKaacEnc_bitCountScalefactorDelta(scf-scfRight) ); 2202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfBitsFract = scfBitsFract << (DFRACT_BITS-1-(2*AS_PE_FAC_SHIFT)); 2222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return scfBitsFract; /* output scaled by 1/(2^(2*AS_PE_FAC)) */ 2242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 2272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Function: FDKaacEnc_calcSingleSpecPe 2282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project specPe is scaled by 1/(2^(2*AS_PE_FAC_SHIFT)) 2302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 2312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic FIXP_DBL FDKaacEnc_calcSingleSpecPe(INT scf, FIXP_DBL sfbConstPePart, FIXP_DBL nLines) 2322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL specPe = FL2FXCONST_DBL(0.0f); 2342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL ldRatio; 2352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL scfFract; 2362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfFract = (FIXP_DBL)(scf << (DFRACT_BITS-1-AS_PE_FAC_SHIFT)); 2382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ldRatio = sfbConstPePart - fMult(FL2FXCONST_DBL(0.375f),scfFract); 2402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (ldRatio >= PE_C1) { 2422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project specPe = fMult(FL2FXCONST_DBL(0.7f),fMult(nLines,ldRatio)); 2432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 2452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project specPe = fMult(FL2FXCONST_DBL(0.7f),fMult(nLines,(PE_C2 + fMult(PE_C3,ldRatio)))); 2462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return specPe; /* output scaled by 1/(2^(2*AS_PE_FAC)) */ 2492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 2522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Function: FDKaacEnc_countScfBitsDiff 2532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfBitsDiff is scaled by 1/(2^(2*AS_PE_FAC_SHIFT)) 2552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 2562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic FIXP_DBL FDKaacEnc_countScfBitsDiff(INT *scfOld, 2572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *scfNew, 2582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfbCnt, 2592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT startSfb, 2602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT stopSfb) 2612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL scfBitsFract; 2632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT scfBitsDiff = 0; 2642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfb = 0, sfbLast; 2652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfbPrev, sfbNext; 2662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* search for first relevant sfb */ 2682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbLast = startSfb; 2692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while ((sfbLast<stopSfb) && (scfOld[sfbLast]==FDK_INT_MIN)) 2702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbLast++; 2712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* search for previous relevant sfb and count diff */ 2722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbPrev = startSfb - 1; 2732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while ((sfbPrev>=0) && (scfOld[sfbPrev]==FDK_INT_MIN)) 2742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbPrev--; 2752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbPrev>=0) 2762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfBitsDiff += FDKaacEnc_bitCountScalefactorDelta(scfNew[sfbPrev]-scfNew[sfbLast]) - 2772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_bitCountScalefactorDelta(scfOld[sfbPrev]-scfOld[sfbLast]); 2782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* now loop through all sfbs and count diffs of relevant sfbs */ 2792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=sfbLast+1; sfb<stopSfb; sfb++) { 2802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfOld[sfb]!=FDK_INT_MIN) { 2812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfBitsDiff += FDKaacEnc_bitCountScalefactorDelta(scfNew[sfbLast]-scfNew[sfb]) - 2822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_bitCountScalefactorDelta(scfOld[sfbLast]-scfOld[sfb]); 2832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbLast = sfb; 2842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* search for next relevant sfb and count diff */ 2872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbNext = stopSfb; 2882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while ((sfbNext<sfbCnt) && (scfOld[sfbNext]==FDK_INT_MIN)) 2892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbNext++; 2902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbNext<sfbCnt) 2912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfBitsDiff += FDKaacEnc_bitCountScalefactorDelta(scfNew[sfbLast]-scfNew[sfbNext]) - 2922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_bitCountScalefactorDelta(scfOld[sfbLast]-scfOld[sfbNext]); 2932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfBitsFract = (FIXP_DBL) (scfBitsDiff << (DFRACT_BITS-1-(2*AS_PE_FAC_SHIFT))); 2952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return scfBitsFract; 2972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 3002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Function: FDKaacEnc_calcSpecPeDiff 3012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project specPeDiff is scaled by 1/(2^(2*AS_PE_FAC_SHIFT)) 3032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 3042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic FIXP_DBL FDKaacEnc_calcSpecPeDiff(PSY_OUT_CHANNEL *psyOutChan, 3052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QC_OUT_CHANNEL *qcOutChannel, 3062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *scfOld, 3072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *scfNew, 3082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbConstPePart, 3092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbFormFactorLdData, 3102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbNRelevantLines, 3112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT startSfb, 3122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT stopSfb) 3132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL specPeDiff = FL2FXCONST_DBL(0.0f); 3152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL scfFract = FL2FXCONST_DBL(0.0f); 3162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfb; 3172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* loop through all sfbs and count pe difference */ 3192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 3202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfOld[sfb]!=FDK_INT_MIN) { 3212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL ldRatioOld, ldRatioNew, pOld, pNew; 3222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* sfbConstPePart[sfb] = (float)log(psyOutChan->sfbEnergy[sfb] * 6.75f / sfbFormFactor[sfb]) * LOG2_1; */ 3242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 0.02152255861f = log(6.75)/log(2)/AS_PE_FAC_FLOAT; LOG2_1 is 1.0 for log2 */ 3252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 0.09375f = log(64.0)/log(2.0)/64.0 = scale of sfbFormFactorLdData */ 3262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbConstPePart[sfb] == (FIXP_DBL)FDK_INT_MIN) 3272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbConstPePart[sfb] = ((psyOutChan->sfbEnergyLdData[sfb] - sfbFormFactorLdData[sfb] - FL2FXCONST_DBL(0.09375f)) >> 1) + FL2FXCONST_DBL(0.02152255861f); 3282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfFract = (FIXP_DBL) (scfOld[sfb] << (DFRACT_BITS-1-AS_PE_FAC_SHIFT)); 3302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ldRatioOld = sfbConstPePart[sfb] - fMult(FL2FXCONST_DBL(0.375f),scfFract); 3312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfFract = (FIXP_DBL) (scfNew[sfb] << (DFRACT_BITS-1-AS_PE_FAC_SHIFT)); 3332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ldRatioNew = sfbConstPePart[sfb] - fMult(FL2FXCONST_DBL(0.375f),scfFract); 3342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (ldRatioOld >= PE_C1) 3362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pOld = ldRatioOld; 3372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else 3382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pOld = PE_C2 + fMult(PE_C3,ldRatioOld); 3392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (ldRatioNew >= PE_C1) 3412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pNew = ldRatioNew; 3422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else 3432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project pNew = PE_C2 + fMult(PE_C3,ldRatioNew); 3442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project specPeDiff += fMult(FL2FXCONST_DBL(0.7f),fMult(sfbNRelevantLines[sfb],(pNew - pOld))); 3462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return specPeDiff; 3502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 3512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 3532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Function: FDKaacEnc_improveScf 3542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: Calculate the distortion by quantization and inverse quantization of the spectrum with 3562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project various scalefactors. The scalefactor which provides the best results will be used. 3572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 3582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT FDKaacEnc_improveScf(FIXP_DBL *spec, 3592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *quantSpec, 3602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *quantSpecTmp, 3612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfbWidth, 3622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL threshLdData, 3632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT scf, 3642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT minScf, 3652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *distLdData, 3662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *minScfCalculated 3672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 3682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbDistLdData; 3702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT scfBest = scf; 3712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k; 3722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL distFactorLdData = FL2FXCONST_DBL(-0.0050301265); /* ld64(1/1.25) */ 3732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* calc real distortion */ 3752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistLdData = FDKaacEnc_calcSfbDist(spec, 3762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpec, 3772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidth, 3782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf); 3792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *minScfCalculated = scf; 3802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* nmr > 1.25 -> try to improve nmr */ 3812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbDistLdData > (threshLdData-distFactorLdData)) { 3822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT scfEstimated = scf; 3832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbDistBestLdData = sfbDistLdData; 3842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT cnt; 3852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* improve by bigger scf ? */ 3862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project cnt = 0; 3872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while ((sfbDistLdData > (threshLdData-distFactorLdData)) && (cnt++ < 3)) { 3892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf++; 3902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistLdData = FDKaacEnc_calcSfbDist(spec, 3912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpecTmp, 3922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidth, 3932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf); 3942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbDistLdData < sfbDistBestLdData) { 3962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfBest = scf; 3972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistBestLdData = sfbDistLdData; 3982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (k=0; k<sfbWidth; k++) 3992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpec[k] = quantSpecTmp[k]; 4002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* improve by smaller scf ? */ 4032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project cnt = 0; 4042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf = scfEstimated; 4052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistLdData = sfbDistBestLdData; 4062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while ((sfbDistLdData > (threshLdData-distFactorLdData)) && (cnt++ < 1) && (scf > minScf)) { 4072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf--; 4082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistLdData = FDKaacEnc_calcSfbDist(spec, 4092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpecTmp, 4102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidth, 4112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf); 4122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbDistLdData < sfbDistBestLdData) { 4142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfBest = scf; 4152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistBestLdData = sfbDistLdData; 4162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (k=0; k<sfbWidth; k++) 4172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpec[k] = quantSpecTmp[k]; 4182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *minScfCalculated = scf; 4202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *distLdData = sfbDistBestLdData; 4222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { /* nmr <= 1.25 -> try to find bigger scf to use less bits */ 4242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbDistBestLdData = sfbDistLdData; 4252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbDistAllowedLdData = fixMin(sfbDistLdData-distFactorLdData,threshLdData); 4262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int cnt; 4272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (cnt=0; cnt<3; cnt++) { 4282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf++; 4292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistLdData = FDKaacEnc_calcSfbDist(spec, 4302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpecTmp, 4312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidth, 4322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf); 4332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbDistLdData < sfbDistAllowedLdData) { 4352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *minScfCalculated = scfBest+1; 4362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfBest = scf; 4372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistBestLdData = sfbDistLdData; 4382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (k=0; k<sfbWidth; k++) 4392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpec[k] = quantSpecTmp[k]; 4402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *distLdData = sfbDistBestLdData; 4432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* return best scalefactor */ 4462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return scfBest; 4472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 4482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 4502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Function: FDKaacEnc_assimilateSingleScf 4512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 4532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void FDKaacEnc_assimilateSingleScf(PSY_OUT_CHANNEL *psyOutChan, 4542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QC_OUT_CHANNEL *qcOutChannel, 4552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *quantSpec, 4562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *quantSpecTmp, 4572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *scf, 4582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *minScf, 4592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbDist, 4602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbConstPePart, 4612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbFormFactorLdData, 4622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbNRelevantLines, 4632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *minScfCalculated, 4642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT restartOnSuccess) 4652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 4662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfbLast, sfbAct, sfbNext; 4672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT scfAct, *scfLast, *scfNext, scfMin, scfMax; 4682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfbWidth, sfbOffs; 4692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL enLdData; 4702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbPeOld, sfbPeNew; 4712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbDistNew; 4722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i, k; 4732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT success = 0; 4742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL deltaPe = FL2FXCONST_DBL(0.0f); 4752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL deltaPeNew, deltaPeTmp; 4762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT prevScfLast[MAX_GROUPED_SFB], prevScfNext[MAX_GROUPED_SFB]; 4772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL deltaPeLast[MAX_GROUPED_SFB]; 4782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT updateMinScfCalculated; 4792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=0; i<psyOutChan->sfbCnt; i++) { 4812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project prevScfLast[i] = FDK_INT_MAX; 4822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project prevScfNext[i] = FDK_INT_MAX; 4832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPeLast[i] = (FIXP_DBL)FDK_INT_MAX; 4842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbLast = -1; 4872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbAct = -1; 4882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbNext = -1; 4892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfLast = 0; 4902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfNext = 0; 4912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMin = FDK_INT_MAX; 4922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMax = FDK_INT_MAX; 4932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project do { 4942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* search for new relevant sfb */ 4952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbNext++; 4962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while ((sfbNext < psyOutChan->sfbCnt) && (scf[sfbNext] == FDK_INT_MIN)) 4972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbNext++; 4982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((sfbLast>=0) && (sfbAct>=0) && (sfbNext<psyOutChan->sfbCnt)) { 4992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* relevant scfs to the left and to the right */ 5002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfAct = scf[sfbAct]; 5012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfLast = scf + sfbLast; 5022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfNext = scf + sfbNext; 5032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMin = fixMin(*scfLast, *scfNext); 5042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMax = fixMax(*scfLast, *scfNext); 5052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else if ((sfbLast==-1) && (sfbAct>=0) && (sfbNext<psyOutChan->sfbCnt)) { 5072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* first relevant scf */ 5082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfAct = scf[sfbAct]; 5092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfLast = &scfAct; 5102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfNext = scf + sfbNext; 5112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMin = *scfNext; 5122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMax = *scfNext; 5132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else if ((sfbLast>=0) && (sfbAct>=0) && (sfbNext==psyOutChan->sfbCnt)) { 5152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* last relevant scf */ 5162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfAct = scf[sfbAct]; 5172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfLast = scf + sfbLast; 5182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfNext = &scfAct; 5192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMin = *scfLast; 5202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMax = *scfLast; 5212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbAct>=0) 5232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMin = fixMax(scfMin, minScf[sfbAct]); 5242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((sfbAct >= 0) && 5262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (sfbLast>=0 || sfbNext<psyOutChan->sfbCnt) && 5272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (scfAct > scfMin) && 5282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (scfAct <= scfMin+MAX_SCF_DELTA) && 5292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (scfAct >= scfMax-MAX_SCF_DELTA) && 5302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (*scfLast != prevScfLast[sfbAct] || 5312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *scfNext != prevScfNext[sfbAct] || 5322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPe < deltaPeLast[sfbAct])) { 5332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* bigger than neighbouring scf found, try to use smaller scf */ 5342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project success = 0; 5352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidth = psyOutChan->sfbOffsets[sfbAct+1] - psyOutChan->sfbOffsets[sfbAct]; 5372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbOffs = psyOutChan->sfbOffsets[sfbAct]; 5382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* estimate required bits for actual scf */ 5402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project enLdData = qcOutChannel->sfbEnergyLdData[sfbAct]; 5412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* sfbConstPePart[sfbAct] = (float)log(6.75f*en/sfbFormFactor[sfbAct]) * LOG2_1; */ 5432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 0.02152255861f = log(6.75)/log(2)/AS_PE_FAC_FLOAT; LOG2_1 is 1.0 for log2 */ 5442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 0.09375f = log(64.0)/log(2.0)/64.0 = scale of sfbFormFactorLdData */ 5452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbConstPePart[sfbAct] == (FIXP_DBL)FDK_INT_MIN) { 5462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbConstPePart[sfbAct] = ((enLdData - sfbFormFactorLdData[sfbAct] - FL2FXCONST_DBL(0.09375f)) >> 1) + FL2FXCONST_DBL(0.02152255861f); 5472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbPeOld = FDKaacEnc_calcSingleSpecPe(scfAct,sfbConstPePart[sfbAct],sfbNRelevantLines[sfbAct]) 5502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project +FDKaacEnc_countSingleScfBits(scfAct, *scfLast, *scfNext); 5512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPeNew = deltaPe; 5532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project updateMinScfCalculated = 1; 5542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project do { 5562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* estimate required bits for smaller scf */ 5572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfAct--; 5582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* check only if the same check was not done before */ 5592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfAct < minScfCalculated[sfbAct] && scfAct>=scfMax-MAX_SCF_DELTA){ 5602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* estimate required bits for new scf */ 5612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbPeNew = FDKaacEnc_calcSingleSpecPe(scfAct,sfbConstPePart[sfbAct],sfbNRelevantLines[sfbAct]) 5622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project +FDKaacEnc_countSingleScfBits(scfAct,*scfLast, *scfNext); 5632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* use new scf if no increase in pe and 5652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantization error is smaller */ 5662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPeTmp = deltaPe + sfbPeNew - sfbPeOld; 5672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 0.0006103515625f = 10.0f/(2^(2*AS_PE_FAC_SHIFT)) */ 5682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (deltaPeTmp < FL2FXCONST_DBL(0.0006103515625f)) { 5692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* distortion of new scf */ 5702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistNew = FDKaacEnc_calcSfbDist(qcOutChannel->mdctSpectrum+sfbOffs, 5712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpecTmp+sfbOffs, 5722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidth, 5732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfAct); 5742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbDistNew < sfbDist[sfbAct]) { 5762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* success, replace scf by new one */ 5772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[sfbAct] = scfAct; 5782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDist[sfbAct] = sfbDistNew; 5792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (k=0; k<sfbWidth; k++) 5812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpec[sfbOffs+k] = quantSpecTmp[sfbOffs+k]; 5822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPeNew = deltaPeTmp; 5842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project success = 1; 5852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* mark as already checked */ 5872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (updateMinScfCalculated) 5882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project minScfCalculated[sfbAct] = scfAct; 5892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 5912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* from this scf value on not all new values have been checked */ 5922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project updateMinScfCalculated = 0; 5932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } while (scfAct > scfMin); 5962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPe = deltaPeNew; 5982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* save parameters to avoid multiple computations of the same sfb */ 6002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project prevScfLast[sfbAct] = *scfLast; 6012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project prevScfNext[sfbAct] = *scfNext; 6022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPeLast[sfbAct] = deltaPe; 6032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (success && restartOnSuccess) { 6062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* start again at first sfb */ 6072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbLast = -1; 6082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbAct = -1; 6092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbNext = -1; 6102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfLast = 0; 6112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfNext = 0; 6122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMin = FDK_INT_MAX; 6132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMax = FDK_INT_MAX; 6142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project success = 0; 6152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 6172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* shift sfbs for next band */ 6182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbLast = sfbAct; 6192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbAct = sfbNext; 6202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } while (sfbNext < psyOutChan->sfbCnt); 6222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 6232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 6252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Function: FDKaacEnc_assimilateMultipleScf 6262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 6282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void FDKaacEnc_assimilateMultipleScf(PSY_OUT_CHANNEL *psyOutChan, 6292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QC_OUT_CHANNEL *qcOutChannel, 6302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *quantSpec, 6312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *quantSpecTmp, 6322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *scf, 6332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *minScf, 6342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbDist, 6352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbConstPePart, 6362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbFormFactorLdData, 6372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbNRelevantLines) 6382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 6392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfb, startSfb, stopSfb; 6402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT scfTmp[MAX_GROUPED_SFB], scfMin, scfMax, scfAct; 6412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT possibleRegionFound; 6422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfbWidth, sfbOffs, i, k; 6432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbDistNew[MAX_GROUPED_SFB], distOldSum, distNewSum; 6442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT deltaScfBits; 6452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL deltaSpecPe; 6462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL deltaPe = FL2FXCONST_DBL(0.0f); 6472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL deltaPeNew; 6482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfbCnt = psyOutChan->sfbCnt; 6492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* calc min and max scalfactors */ 6512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMin = FDK_INT_MAX; 6522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMax = FDK_INT_MIN; 6532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=0; sfb<sfbCnt; sfb++) { 6542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scf[sfb]!=FDK_INT_MIN) { 6552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMin = fixMin(scfMin, scf[sfb]); 6562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMax = fixMax(scfMax, scf[sfb]); 6572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfMax != FDK_INT_MIN && scfMax <= scfMin+MAX_SCF_DELTA) { 6612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfAct = scfMax; 6632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project do { 6652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* try smaller scf */ 6662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfAct--; 6672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=0; i<MAX_GROUPED_SFB; i++) 6682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfTmp[i] = scf[i]; 6692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopSfb = 0; 6702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project do { 6712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* search for region where all scfs are bigger than scfAct */ 6722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfb = stopSfb; 6732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while (sfb<sfbCnt && (scf[sfb]==FDK_INT_MIN || scf[sfb] <= scfAct)) 6742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfb++; 6752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startSfb = sfb; 6762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfb++; 6772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while (sfb<sfbCnt && (scf[sfb]==FDK_INT_MIN || scf[sfb] > scfAct)) 6782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfb++; 6792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopSfb = sfb; 6802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* check if in all sfb of a valid region scfAct >= minScf[sfb] */ 6822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project possibleRegionFound = 0; 6832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (startSfb < sfbCnt) { 6842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project possibleRegionFound = 1; 6852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 6862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scf[sfb] != FDK_INT_MIN) 6872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfAct < minScf[sfb]) { 6882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project possibleRegionFound = 0; 6892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 6902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (possibleRegionFound) { /* region found */ 6952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* replace scfs in region by scfAct */ 6972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 6982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfTmp[sfb] != FDK_INT_MIN) 6992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfTmp[sfb] = scfAct; 7002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* estimate change in bit demand for new scfs */ 7032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScfBits = FDKaacEnc_countScfBitsDiff(scf,scfTmp,sfbCnt,startSfb,stopSfb); 7042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaSpecPe = FDKaacEnc_calcSpecPeDiff(psyOutChan, qcOutChannel, scf, scfTmp, sfbConstPePart, 7062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbFormFactorLdData, sfbNRelevantLines, 7072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startSfb, stopSfb); 7082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPeNew = deltaPe + (FIXP_DBL)deltaScfBits + deltaSpecPe; 7102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* new bit demand small enough ? */ 7122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 0.0006103515625f = 10.0f/(2^(2*AS_PE_FAC_SHIFT)) */ 7132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (deltaPeNew < FL2FXCONST_DBL(0.0006103515625f)) { 7142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* quantize and calc sum of new distortion */ 7162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project distOldSum = distNewSum = FL2FXCONST_DBL(0.0f); 7172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 7182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfTmp[sfb] != FDK_INT_MIN) { 7192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project distOldSum += CalcInvLdData(sfbDist[sfb]) >> DIST_FAC_SHIFT; 7202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidth = psyOutChan->sfbOffsets[sfb+1] - psyOutChan->sfbOffsets[sfb]; 7222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbOffs = psyOutChan->sfbOffsets[sfb]; 7232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistNew[sfb] = FDKaacEnc_calcSfbDist(qcOutChannel->mdctSpectrum+sfbOffs, 7252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpecTmp+sfbOffs, 7262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidth, 7272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfAct); 7282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbDistNew[sfb] >qcOutChannel->sfbThresholdLdData[sfb]) { 7302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* no improvement, skip further dist. calculations */ 7312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project distNewSum = distOldSum << 1; 7322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 7332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project distNewSum += CalcInvLdData(sfbDistNew[sfb]) >> DIST_FAC_SHIFT; 7352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* distortion smaller ? -> use new scalefactors */ 7382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (distNewSum < distOldSum) { 7392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPe = deltaPeNew; 7402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 7412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scf[sfb] != FDK_INT_MIN) { 7422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidth = psyOutChan->sfbOffsets[sfb+1] - 7432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project psyOutChan->sfbOffsets[sfb]; 7442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbOffs = psyOutChan->sfbOffsets[sfb]; 7452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[sfb] = scfAct; 7462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDist[sfb] = sfbDistNew[sfb]; 7472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (k=0; k<sfbWidth; k++) 7492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpec[sfbOffs+k] = quantSpecTmp[sfbOffs+k]; 7502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } while (stopSfb <= sfbCnt); 7582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } while (scfAct > scfMin); 7602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 7622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 7642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Function: FDKaacEnc_FDKaacEnc_assimilateMultipleScf2 7652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 7672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void FDKaacEnc_FDKaacEnc_assimilateMultipleScf2(PSY_OUT_CHANNEL *psyOutChan, 7682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QC_OUT_CHANNEL *qcOutChannel, 7692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *quantSpec, 7702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *quantSpecTmp, 7712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *scf, 7722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *minScf, 7732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbDist, 7742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbConstPePart, 7752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbFormFactorLdData, 7762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *sfbNRelevantLines) 7772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 7782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfb, startSfb, stopSfb; 7792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT scfTmp[MAX_GROUPED_SFB], scfAct, scfNew; 7802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT scfPrev, scfNext, scfPrevNextMin, scfPrevNextMax, scfLo, scfHi; 7812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT scfMin, scfMax; 7822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *sfbOffs = psyOutChan->sfbOffsets; 7832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbDistNew[MAX_GROUPED_SFB], sfbDistMax[MAX_GROUPED_SFB]; 7842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL distOldSum, distNewSum; 7852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT deltaScfBits; 7862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL deltaSpecPe; 7872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL deltaPe = FL2FXCONST_DBL(0.0f); 7882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL deltaPeNew = FL2FXCONST_DBL(0.0f); 7892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sfbCnt = psyOutChan->sfbCnt; 7902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT bSuccess, bCheckScf; 7912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i,k; 7922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* calc min and max scalfactors */ 7942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMin = FDK_INT_MAX; 7952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMax = FDK_INT_MIN; 7962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=0; sfb<sfbCnt; sfb++) { 7972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scf[sfb]!=FDK_INT_MIN) { 7982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMin = fixMin(scfMin, scf[sfb]); 7992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMax = fixMax(scfMax, scf[sfb]); 8002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopSfb = 0; 8042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfAct = FDK_INT_MIN; 8052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project do { 8062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* search for region with same scf values scfAct */ 8072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfPrev = scfAct; 8082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfb = stopSfb; 8102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while (sfb<sfbCnt && (scf[sfb]==FDK_INT_MIN)) 8112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfb++; 8122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startSfb = sfb; 8132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfAct = scf[startSfb]; 8142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfb++; 8152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while (sfb<sfbCnt && ((scf[sfb]==FDK_INT_MIN) || (scf[sfb]==scf[startSfb]))) 8162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfb++; 8172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopSfb = sfb; 8182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (stopSfb < sfbCnt) 8202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfNext = scf[stopSfb]; 8212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else 8222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfNext = scfAct; 8232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfPrev == FDK_INT_MIN) 8252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfPrev = scfAct; 8262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfPrevNextMax = fixMax(scfPrev, scfNext); 8282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfPrevNextMin = fixMin(scfPrev, scfNext); 8292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* try to reduce bits by checking scf values in the range 8312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[startSfb]...scfHi */ 8322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfHi = fixMax(scfPrevNextMax, scfAct); 8332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* try to find a better solution by reducing the scf difference to 8342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project the nearest possible lower scf */ 8352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfPrevNextMax >= scfAct) 8362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfLo = fixMin(scfAct, scfPrevNextMin); 8372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else 8382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfLo = scfPrevNextMax; 8392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (startSfb < sfbCnt && scfHi-scfLo <= MAX_SCF_DELTA) { /* region found */ 8412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 1. try to save bits by coarser quantization */ 8422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfHi > scf[startSfb]) { 8432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* calculate the allowed distortion */ 8442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 8452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scf[sfb] != FDK_INT_MIN) { 8462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* sfbDistMax[sfb] = (float)pow(qcOutChannel->sfbThreshold[sfb]*sfbDist[sfb]*sfbDist[sfb],1.0f/3.0f); */ 8472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* sfbDistMax[sfb] = fixMax(sfbDistMax[sfb],qcOutChannel->sfbEnergy[sfb]*FL2FXCONST_DBL(1.e-3f)); */ 8482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* -0.15571537944 = ld64(1.e-3f)*/ 8492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistMax[sfb] = fMult(FL2FXCONST_DBL(1.0f/3.0f),qcOutChannel->sfbThresholdLdData[sfb])+fMult(FL2FXCONST_DBL(1.0f/3.0f),sfbDist[sfb])+fMult(FL2FXCONST_DBL(1.0f/3.0f),sfbDist[sfb]); 8502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistMax[sfb] = fixMax(sfbDistMax[sfb],qcOutChannel->sfbEnergyLdData[sfb]-FL2FXCONST_DBL(0.15571537944)); 8512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistMax[sfb] = fixMin(sfbDistMax[sfb],qcOutChannel->sfbThresholdLdData[sfb]); 8522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* loop over all possible scf values for this region */ 8562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bCheckScf = 1; 8572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (scfNew=scf[startSfb]+1; scfNew<=scfHi; scfNew++) { 8582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (k=0; k<MAX_GROUPED_SFB; k++) 8592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfTmp[k] = scf[k]; 8602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* replace scfs in region by scfNew */ 8622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 8632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfTmp[sfb] != FDK_INT_MIN) 8642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfTmp[sfb] = scfNew; 8652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* estimate change in bit demand for new scfs */ 8682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScfBits = FDKaacEnc_countScfBitsDiff(scf,scfTmp,sfbCnt,startSfb,stopSfb); 8692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaSpecPe = FDKaacEnc_calcSpecPeDiff(psyOutChan, qcOutChannel, scf, scfTmp, sfbConstPePart, 8712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbFormFactorLdData, sfbNRelevantLines, 8722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startSfb, stopSfb); 8732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPeNew = deltaPe + (FIXP_DBL)deltaScfBits + deltaSpecPe; 8752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* new bit demand small enough ? */ 8772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (deltaPeNew < FL2FXCONST_DBL(0.0f)) { 8782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bSuccess = 1; 8792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* quantize and calc sum of new distortion */ 8812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 8822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfTmp[sfb] != FDK_INT_MIN) { 8832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistNew[sfb] = FDKaacEnc_calcSfbDist(qcOutChannel->mdctSpectrum+sfbOffs[sfb], 8842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpecTmp+sfbOffs[sfb], 8852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbOffs[sfb+1]-sfbOffs[sfb], 8862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfNew); 8872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbDistNew[sfb] > sfbDistMax[sfb]) { 8892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* no improvement, skip further dist. calculations */ 8902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bSuccess = 0; 8912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbDistNew[sfb] == qcOutChannel->sfbEnergyLdData[sfb]) { 8922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* if whole sfb is already quantized to 0, further 8932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project checks with even coarser quant. are useless*/ 8942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bCheckScf = 0; 8952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 8972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (bCheckScf==0) /* further calculations useless ? */ 9012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 9022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* distortion small enough ? -> use new scalefactors */ 9032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (bSuccess) { 9042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPe = deltaPeNew; 9052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 9062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scf[sfb] != FDK_INT_MIN) { 9072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[sfb] = scfNew; 9082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDist[sfb] = sfbDistNew[sfb]; 9092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (k=0; k<sfbOffs[sfb+1]-sfbOffs[sfb]; k++) 9112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpec[sfbOffs[sfb]+k] = quantSpecTmp[sfbOffs[sfb]+k]; 9122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 2. only if coarser quantization was not successful, try to find 9202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project a better solution by finer quantization and reducing bits for 9212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scalefactor coding */ 9222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfAct==scf[startSfb] && 9232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfLo < scfAct && 9242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfMax-scfMin <= MAX_SCF_DELTA) { 9252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int bminScfViolation = 0; 9272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (k=0; k<MAX_GROUPED_SFB; k++) 9292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfTmp[k] = scf[k]; 9302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfNew = scfLo; 9322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* replace scfs in region by scfNew and 9342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project check if in all sfb scfNew >= minScf[sfb] */ 9352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 9362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfTmp[sfb] != FDK_INT_MIN) { 9372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfTmp[sfb] = scfNew; 9382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfNew < minScf[sfb]) 9392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bminScfViolation = 1; 9402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (!bminScfViolation) { 9442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* estimate change in bit demand for new scfs */ 9452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScfBits = FDKaacEnc_countScfBitsDiff(scf,scfTmp,sfbCnt,startSfb,stopSfb); 9462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaSpecPe = FDKaacEnc_calcSpecPeDiff(psyOutChan, qcOutChannel, scf, scfTmp, sfbConstPePart, 9482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbFormFactorLdData, sfbNRelevantLines, 9492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startSfb, stopSfb); 9502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPeNew = deltaPe + (FIXP_DBL)deltaScfBits + deltaSpecPe; 9522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* new bit demand small enough ? */ 9552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (!bminScfViolation && deltaPeNew < FL2FXCONST_DBL(0.0f)) { 9562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* quantize and calc sum of new distortion */ 9582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project distOldSum = distNewSum = FL2FXCONST_DBL(0.0f); 9592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 9602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfTmp[sfb] != FDK_INT_MIN) { 9612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project distOldSum += CalcInvLdData(sfbDist[sfb]) >> DIST_FAC_SHIFT; 9622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistNew[sfb] = FDKaacEnc_calcSfbDist(qcOutChannel->mdctSpectrum+sfbOffs[sfb], 9642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpecTmp+sfbOffs[sfb], 9652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbOffs[sfb+1]-sfbOffs[sfb], 9662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfNew); 9672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sfbDistNew[sfb] > qcOutChannel->sfbThresholdLdData[sfb]) { 9692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* no improvement, skip further dist. calculations */ 9702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project distNewSum = distOldSum << 1; 9712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 9722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project distNewSum += CalcInvLdData(sfbDistNew[sfb]) >> DIST_FAC_SHIFT; 9742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* distortion smaller ? -> use new scalefactors */ 9772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (distNewSum < fMult(FL2FXCONST_DBL(0.8f),distOldSum)) { 9782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPe = deltaPeNew; 9792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 9802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scf[sfb] != FDK_INT_MIN) { 9812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[sfb] = scfNew; 9822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDist[sfb] = sfbDistNew[sfb]; 9832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (k=0; k<sfbOffs[sfb+1]-sfbOffs[sfb]; k++) 9852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpec[sfbOffs[sfb]+k] = quantSpecTmp[sfbOffs[sfb]+k]; 9862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 9912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 3. try to find a better solution (save bits) by only reducing the 9932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scalefactor without new quantization */ 9942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfMax-scfMin <= MAX_SCF_DELTA-3) { /* 3 bec. scf is reduced 3 times, 9952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project see for loop below */ 9962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 9972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (k=0; k<sfbCnt; k++) 9982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfTmp[k] = scf[k]; 9992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=0; i<3; i++) { 10012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfNew = scfTmp[startSfb]-1; 10022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* replace scfs in region by scfNew */ 10032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 10042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfTmp[sfb] != FDK_INT_MIN) 10052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfTmp[sfb] = scfNew; 10062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* estimate change in bit demand for new scfs */ 10082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScfBits = FDKaacEnc_countScfBitsDiff(scf,scfTmp,sfbCnt,startSfb,stopSfb); 10092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPeNew = deltaPe + (FIXP_DBL)deltaScfBits; 10102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* new bit demand small enough ? */ 10112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (deltaPeNew <= FL2FXCONST_DBL(0.0f)) { 10122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bSuccess = 1; 10142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project distOldSum = distNewSum = FL2FXCONST_DBL(0.0f); 10152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 10162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfTmp[sfb] != FDK_INT_MIN) { 10172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbEnQ; 10182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* calc the energy and distortion of the quantized spectrum for 10192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project a smaller scf */ 10202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_calcSfbQuantEnergyAndDist(qcOutChannel->mdctSpectrum+sfbOffs[sfb], 10212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpec+sfbOffs[sfb], 10222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbOffs[sfb+1]-sfbOffs[sfb], scfNew, 10232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &sfbEnQ, &sfbDistNew[sfb]); 10242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project distOldSum += CalcInvLdData(sfbDist[sfb]) >> DIST_FAC_SHIFT; 10262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project distNewSum += CalcInvLdData(sfbDistNew[sfb]) >> DIST_FAC_SHIFT; 10272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 0.00259488556167 = ld64(1.122f) */ 10292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* -0.00778722686652 = ld64(0.7079f) */ 10302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((sfbDistNew[sfb] > (sfbDist[sfb]+FL2FXCONST_DBL(0.00259488556167f))) || (sfbEnQ < (qcOutChannel->sfbEnergyLdData[sfb] - FL2FXCONST_DBL(0.00778722686652f)))){ 10312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bSuccess = 0; 10322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 10332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* distortion smaller ? -> use new scalefactors */ 10372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (distNewSum < distOldSum && bSuccess) { 10382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPe = deltaPeNew; 10392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb=startSfb; sfb<stopSfb; sfb++) { 10402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scf[sfb] != FDK_INT_MIN) { 10412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[sfb] = scfNew; 10422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDist[sfb] = sfbDistNew[sfb]; 10432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } while (stopSfb <= sfbCnt); 10512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 10532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void 10552228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKaacEnc_FDKaacEnc_EstimateScaleFactorsChannel(QC_OUT_CHANNEL *qcOutChannel, 10562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project PSY_OUT_CHANNEL *psyOutChannel, 10572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *RESTRICT scf, 10582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *RESTRICT globalGain, 10592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *RESTRICT sfbFormFactorLdData 10602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ,const INT invQuant, 10612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SHORT *RESTRICT quantSpec 10622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 10632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 10642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i, j, sfb, sfbOffs; 10652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT scfInt; 10662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT maxSf; 10672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT minSf; 10682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL threshLdData; 10692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL energyLdData; 10702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL energyPartLdData; 10712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL thresholdPartLdData; 10722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL scfFract; 10732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL maxSpec; 10742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL absSpec; 10752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT minScfCalculated[MAX_GROUPED_SFB]; 10762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbDistLdData[MAX_GROUPED_SFB]; 10772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project C_ALLOC_SCRATCH_START(quantSpecTmp, SHORT, (1024)); 10782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT minSfMaxQuant[MAX_GROUPED_SFB]; 10792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL threshConstLdData=FL2FXCONST_DBL(0.04304511722f); /* log10(6.75)/log10(2.0)/64.0 */ 10812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL convConst=FL2FXCONST_DBL(0.30102999566f); /* log10(2.0) */ 10822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL c1Const=FL2FXCONST_DBL(-0.27083183594f); /* C1 = -69.33295 => C1/2^8 */ 10832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (invQuant>0) { 10872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemclear(quantSpec, (1024)*sizeof(SHORT)); 10882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* scfs without energy or with thresh>energy are marked with FDK_INT_MIN */ 10912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=0; i<psyOutChannel->sfbCnt; i++) { 10922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[i] = FDK_INT_MIN; 10932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=0; i<MAX_GROUPED_SFB; i++) { 10962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project minSfMaxQuant[i] = FDK_INT_MIN; 10972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 10982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 10992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfbOffs=0; sfbOffs<psyOutChannel->sfbCnt; sfbOffs+=psyOutChannel->sfbPerGroup) { 11002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(sfb=0; sfb<psyOutChannel->maxSfbPerGroup; sfb++) { 11012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project threshLdData = qcOutChannel->sfbThresholdLdData[sfbOffs+sfb]; 11032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project energyLdData = qcOutChannel->sfbEnergyLdData[sfbOffs+sfb]; 11042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistLdData[sfbOffs+sfb] = energyLdData; 11062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (energyLdData > threshLdData) { 11092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL tmp; 11102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* energyPart = (float)log10(sfbFormFactor[sfbOffs+sfb]); */ 11122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 0.09375f = log(64.0)/log(2.0)/64.0 = scale of sfbFormFactorLdData */ 11132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project energyPartLdData = sfbFormFactorLdData[sfbOffs+sfb] + FL2FXCONST_DBL(0.09375f); 11142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* influence of allowed distortion */ 11162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* thresholdPart = (float)log10(6.75*thresh+FLT_MIN); */ 11172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project thresholdPartLdData = threshConstLdData + threshLdData; 11182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* scf calc */ 11202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* scfFloat = 8.8585f * (thresholdPart - energyPart); */ 11212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfFract = thresholdPartLdData - energyPartLdData; 11222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* conversion from log2 to log10 */ 11232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfFract = fMult(convConst,scfFract); 11242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* (8.8585f * scfFract)/8 = 8/8 * scfFract + 0.8585 * scfFract/8 */ 11252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfFract = scfFract + fMult(FL2FXCONST_DBL(0.8585f),scfFract >> 3); 11262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* integer scalefactor */ 11282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* scfInt = (int)floor(scfFloat); */ 11292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfInt = (INT)(scfFract>>((DFRACT_BITS-1)-3-LD_DATA_SHIFT)); /* 3 bits => scfFract/8.0; 6 bits => ld64 */ 11302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* maximum of spectrum */ 11322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxSpec = FL2FXCONST_DBL(0.0f); 11332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(j=psyOutChannel->sfbOffsets[sfbOffs+sfb]; j<psyOutChannel->sfbOffsets[sfbOffs+sfb+1]; j++ ){ 11352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project absSpec = fixp_abs(qcOutChannel->mdctSpectrum[j]); 11362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxSpec = (absSpec > maxSpec) ? absSpec : maxSpec; 11372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 11382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* lower scf limit to avoid quantized values bigger than MAX_QUANT */ 11402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* C1 = -69.33295f, C2 = 5.77078f = 4/log(2) */ 11412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* minSfMaxQuant[sfbOffs+sfb] = (int)ceil(C1 + C2*log(maxSpec)); */ 11422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* C1/2^8 + 4/log(2.0)*log(maxSpec)/2^8 => C1/2^8 + log(maxSpec)/log(2.0)*4/2^8 => C1/2^8 + log(maxSpec)/log(2.0)/64.0 */ 11432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project //minSfMaxQuant[sfbOffs+sfb] = ((INT) ((c1Const + CalcLdData(maxSpec)) >> ((DFRACT_BITS-1)-8))) + 1; 11452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project tmp = CalcLdData(maxSpec); 11462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (c1Const>FL2FXCONST_DBL(-1.f)-tmp) { 11472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project minSfMaxQuant[sfbOffs+sfb] = ((INT) ((c1Const + tmp) >> ((DFRACT_BITS-1)-8))) + 1; 11482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 11492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 11502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project minSfMaxQuant[sfbOffs+sfb] = ((INT) (FL2FXCONST_DBL(-1.f) >> ((DFRACT_BITS-1)-8))) + 1; 11512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 11522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfInt = fixMax(scfInt, minSfMaxQuant[sfbOffs+sfb]); 11542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* find better scalefactor with analysis by synthesis */ 11572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (invQuant>0) { 11582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfInt = FDKaacEnc_improveScf(qcOutChannel->mdctSpectrum+psyOutChannel->sfbOffsets[sfbOffs+sfb], 11592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpec+psyOutChannel->sfbOffsets[sfbOffs+sfb], 11602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpecTmp+psyOutChannel->sfbOffsets[sfbOffs+sfb], 11612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project psyOutChannel->sfbOffsets[sfbOffs+sfb+1]-psyOutChannel->sfbOffsets[sfbOffs+sfb], 11622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project threshLdData, scfInt, minSfMaxQuant[sfbOffs+sfb], 11632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &sfbDistLdData[sfbOffs+sfb], &minScfCalculated[sfbOffs+sfb] 11642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 11652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 11662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[sfbOffs+sfb] = scfInt; 11672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 11682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 11692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 11702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (invQuant>1) { 11732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* try to decrease scf differences */ 11742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbConstPePart[MAX_GROUPED_SFB]; 11752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL sfbNRelevantLines[MAX_GROUPED_SFB]; 11762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=0; i<psyOutChannel->sfbCnt; i++) 11782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbConstPePart[i] = (FIXP_DBL)FDK_INT_MIN; 11792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_calcSfbRelevantLines( sfbFormFactorLdData, 11812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qcOutChannel->sfbEnergyLdData, 11822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qcOutChannel->sfbThresholdLdData, 11832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project psyOutChannel->sfbOffsets, 11842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project psyOutChannel->sfbCnt, 11852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project psyOutChannel->sfbPerGroup, 11862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project psyOutChannel->maxSfbPerGroup, 11872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbNRelevantLines); 11882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_assimilateSingleScf(psyOutChannel, qcOutChannel, quantSpec, quantSpecTmp, scf, 11912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project minSfMaxQuant, sfbDistLdData, sfbConstPePart, 11922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbFormFactorLdData, sfbNRelevantLines, minScfCalculated, 1); 11932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_assimilateMultipleScf(psyOutChannel, qcOutChannel, quantSpec, quantSpecTmp, scf, 11962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project minSfMaxQuant, sfbDistLdData, sfbConstPePart, 11972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbFormFactorLdData, sfbNRelevantLines); 11982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 11992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_FDKaacEnc_assimilateMultipleScf2(psyOutChannel, qcOutChannel, quantSpec, quantSpecTmp, scf, 12012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project minSfMaxQuant, sfbDistLdData, sfbConstPePart, 12022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbFormFactorLdData, sfbNRelevantLines); 12032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* get min scalefac */ 12082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project minSf = FDK_INT_MAX; 12092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfbOffs=0; sfbOffs<psyOutChannel->sfbCnt; sfbOffs+=psyOutChannel->sfbPerGroup) { 12102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb = 0; sfb < psyOutChannel->maxSfbPerGroup; sfb++) { 12112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scf[sfbOffs+sfb]!=FDK_INT_MIN) 12122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project minSf = fixMin(minSf,scf[sfbOffs+sfb]); 12132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* limit scf delta */ 12172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfbOffs=0; sfbOffs<psyOutChannel->sfbCnt; sfbOffs+=psyOutChannel->sfbPerGroup) { 12182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb = 0; sfb < psyOutChannel->maxSfbPerGroup; sfb++) { 12192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((scf[sfbOffs+sfb] != FDK_INT_MIN) && (minSf+MAX_SCF_DELTA) < scf[sfbOffs+sfb]) { 12202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[sfbOffs+sfb] = minSf + MAX_SCF_DELTA; 12212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (invQuant > 0) { /* changed bands need to be quantized again */ 12222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbDistLdData[sfbOffs+sfb] = 12232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_calcSfbDist(qcOutChannel->mdctSpectrum+psyOutChannel->sfbOffsets[sfbOffs+sfb], 12242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpec+psyOutChannel->sfbOffsets[sfbOffs+sfb], 12252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project psyOutChannel->sfbOffsets[sfbOffs+sfb+1]-psyOutChannel->sfbOffsets[sfbOffs+sfb], 12262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[sfbOffs+sfb] 12272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 12282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* get max scalefac for global gain */ 12352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxSf = FDK_INT_MIN; 12362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfbOffs=0; sfbOffs<psyOutChannel->sfbCnt; sfbOffs+=psyOutChannel->sfbPerGroup) { 12372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb = 0; sfb < psyOutChannel->maxSfbPerGroup; sfb++) { 12382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxSf = fixMax(maxSf,scf[sfbOffs+sfb]); 12392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* calc loop scalefactors, if spec is not all zero (i.e. maxSf == -99) */ 12432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if( maxSf > FDK_INT_MIN ) { 12442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *globalGain = maxSf; 12452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfbOffs=0; sfbOffs<psyOutChannel->sfbCnt; sfbOffs+=psyOutChannel->sfbPerGroup) { 12462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb = 0; sfb < psyOutChannel->maxSfbPerGroup; sfb++) { 12472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if( scf[sfbOffs+sfb] == FDK_INT_MIN ) { 12482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[sfbOffs+sfb] = 0; 12492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* set band explicitely to zero */ 12502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(j=psyOutChannel->sfbOffsets[sfbOffs+sfb]; j<psyOutChannel->sfbOffsets[sfbOffs+sfb+1]; j++ ) { 12512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qcOutChannel->mdctSpectrum[j] = FL2FXCONST_DBL(0.0f); 12522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 12552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[sfbOffs+sfb] = maxSf - scf[sfbOffs+sfb]; 12562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else{ 12612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *globalGain = 0; 12622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* set spectrum explicitely to zero */ 12632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfbOffs=0; sfbOffs<psyOutChannel->sfbCnt; sfbOffs+=psyOutChannel->sfbPerGroup) { 12642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (sfb = 0; sfb < psyOutChannel->maxSfbPerGroup; sfb++) { 12652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scf[sfbOffs+sfb] = 0; 12662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* set band explicitely to zero */ 12672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(j=psyOutChannel->sfbOffsets[sfbOffs+sfb]; j<psyOutChannel->sfbOffsets[sfbOffs+sfb+1]; j++ ) { 12682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qcOutChannel->mdctSpectrum[j] = FL2FXCONST_DBL(0.0f); 12692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* free quantSpecTmp from scratch */ 12752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project C_ALLOC_SCRATCH_END(quantSpecTmp, SHORT, (1024)); 12762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 12792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid 12812228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKaacEnc_EstimateScaleFactors(PSY_OUT_CHANNEL *psyOutChannel[], 12822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QC_OUT_CHANNEL* qcOutChannel[], 12832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const int invQuant, 12842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const int nChannels) 12852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 12862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int ch; 12872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 12882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (ch = 0; ch < nChannels; ch++) 12892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 12902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_FDKaacEnc_EstimateScaleFactorsChannel(qcOutChannel[ch], 12912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project psyOutChannel[ch], 12922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qcOutChannel[ch]->scf, 12932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &qcOutChannel[ch]->globalGain, 12942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qcOutChannel[ch]->sfbFormFactorLdData 12952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ,invQuant, 12962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qcOutChannel[ch]->quantSpec 12972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 12982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 12992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 13002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 13012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1302