12228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 22228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* ----------------------------------------------------------------------------------------------------------- 32228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSoftware License for The Fraunhofer FDK AAC Codec Library for Android 42228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 54f0d97057c5c640b25518358886f8c47da9fc052Jean-Michel Trivi� Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur F�rderung der angewandten Forschung e.V. 62228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project All rights reserved. 72228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 82228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1. INTRODUCTION 92228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 112228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is intended to be used on a wide variety of Android devices. 122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 132228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectaudio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindependent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof the MPEG specifications. 172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 182228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectPatent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmay be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindividually for the purpose of encoding or decoding bit streams in products that are compliant with 212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthese patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware may already be covered under those patent licenses when it is used for those licensed purposes only. 242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 252228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCommercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectare also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectapplications information and documentation. 282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project2. COPYRIGHT LICENSE 302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 312228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectRedistribution and use in source and binary forms, with or without modification, are permitted without 322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectpayment of copyright license fees provided that you satisfy the following conditions: 332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 342228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in redistributions of the FDK AAC Codec or 352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectyour modifications thereto in source code form. 362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 372228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in the documentation and/or other materials 382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprovided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 392228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must make available free of charge copies of the complete source code of the FDK AAC Codec and your 402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmodifications thereto to recipients of copies in binary form. 412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 422228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe name of Fraunhofer may not be used to endorse or promote products derived from this library without 432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprior written permission. 442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 452228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware or your modifications thereto. 472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 482228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYour modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectand the date of any change. For modified versions of the FDK AAC Codec, the term 502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term 512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." 522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project3. NO PATENT LICENSE 542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 552228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectNO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 562228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectrespect to this software. 582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 592228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectby appropriate patent licenses. 612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project4. DISCLAIMER 632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 642228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors 652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties 662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 672228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectincluding but not limited to procurement of substitute goods or services; loss of use, data, or profits, 692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projector business interruption, however caused and on any theory of liability, whether in contract, strict 702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectliability, or tort (including negligence), arising in any way out of the use of this software, even if 712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectadvised of the possibility of such damage. 722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project5. CONTACT INFORMATION 742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 752228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFraunhofer Institute for Integrated Circuits IIS 762228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAttention: Audio and Multimedia Departments - FDK AAC LL 772228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAm Wolfsmantel 33 782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project91058 Erlangen, Germany 792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectwww.iis.fraunhofer.de/amm 812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectamm-info@iis.fraunhofer.de 822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------------------- */ 832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/******************************** MPEG Audio Encoder ************************** 852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Initial author: M.Werner 872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project contents/description: Noiseless coder module 882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project******************************************************************************/ 902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "dyn_bits.h" 922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "bit_cnt.h" 932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "psy_const.h" 942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "aacenc_pns.h" 952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "aacEnc_ram.h" 962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "aacEnc_rom.h" 972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projecttypedef INT (*lookUpTable)[CODE_BOOK_ESC_NDX + 1]; 992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT FDKaacEnc_getSideInfoBits( 1012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SECTION_INFO* const huffsection, 1022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SHORT* const sideInfoTab, 1032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT useHCR 1042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 1052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT sideInfoBits; 1072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( useHCR && ((huffsection->codeBook == 11) || (huffsection->codeBook >= 16)) ) { 1092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sideInfoBits = 5; 1102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 1122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sideInfoBits = sideInfoTab[huffsection->sfbCnt]; 1132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (sideInfoBits); 1162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* count bits using all possible tables */ 1192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void FDKaacEnc_buildBitLookUp( 1202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SHORT* const quantSpectrum, 1212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT maxSfb, 1222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const sfbOffset, 1232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT* const sfbMax, 1242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT bitLookUp[MAX_SFB_LONG][CODE_BOOK_ESC_NDX + 1], 1252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SECTION_INFO* const huffsection 1262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 1272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i, sfbWidth; 1292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i = 0; i < maxSfb; i++) 1312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 1322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[i].sfbCnt = 1; 1332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[i].sfbStart = i; 1342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[i].sectionBits = INVALID_BITCOUNT; 1352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[i].codeBook = -1; 1362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbWidth = sfbOffset[i + 1] - sfbOffset[i]; 1372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_bitCount(quantSpectrum + sfbOffset[i], sfbWidth, sfbMax[i], bitLookUp[i]); 1382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* essential helper functions */ 1422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT FDKaacEnc_findBestBook( 1432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const bc, 1442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT* const book, 1452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT useVCB11 1462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 1472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT minBits = INVALID_BITCOUNT, j; 1492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int end = CODE_BOOK_ESC_NDX; 1512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (j = 0; j <= end; j++) 1542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 1552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (bc[j] < minBits) 1562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 1572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project minBits = bc[j]; 1582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *book = j; 1592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (minBits); 1622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT FDKaacEnc_findMinMergeBits( 1652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const bc1, 1662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const bc2, 1672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT useVCB11 1682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 1692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT minBits = INVALID_BITCOUNT, j; 1712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int end = CODE_BOOK_ESC_NDX; 1732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (j = 0; j <= end; j++) 1762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 1772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (bc1[j] + bc2[j] < minBits) 1782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 1792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project minBits = bc1[j] + bc2[j]; 1802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (minBits); 1832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void FDKaacEnc_mergeBitLookUp( 1862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT* const bc1, 1872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const bc2 1882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 1892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int j; 1912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (j = 0; j <= CODE_BOOK_ESC_NDX; j++) 1932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 1942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bc1[j] = fixMin(bc1[j] + bc2[j], INVALID_BITCOUNT); 1952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT FDKaacEnc_findMaxMerge( 1992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const mergeGainLookUp, 2002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SECTION_INFO* const huffsection, 2012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT maxSfb, 2022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT* const maxNdx 2032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 2042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i, maxMergeGain = 0; 2062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i = 0; i + huffsection[i].sfbCnt < maxSfb; i += huffsection[i].sfbCnt) 2082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (mergeGainLookUp[i] > maxMergeGain) 2102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxMergeGain = mergeGainLookUp[i]; 2122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *maxNdx = i; 2132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (maxMergeGain); 2162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT FDKaacEnc_CalcMergeGain( 2192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SECTION_INFO* const huffsection, 2202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT bitLookUp[MAX_SFB_LONG][CODE_BOOK_ESC_NDX + 1], 2212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SHORT* const sideInfoTab, 2222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT ndx1, 2232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT ndx2, 2242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT useVCB11 2252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 2262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT MergeGain, MergeBits, SplitBits; 2282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project MergeBits = sideInfoTab[huffsection[ndx1].sfbCnt + huffsection[ndx2].sfbCnt] + FDKaacEnc_findMinMergeBits(bitLookUp[ndx1], bitLookUp[ndx2], useVCB11); 2302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SplitBits = huffsection[ndx1].sectionBits + huffsection[ndx2].sectionBits; /* Bit amount for splitted huffsections */ 2312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project MergeGain = SplitBits - MergeBits; 2322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (huffsection[ndx1].codeBook==CODE_BOOK_PNS_NO)||(huffsection[ndx2].codeBook==CODE_BOOK_PNS_NO) 2342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project || (huffsection[ndx1].codeBook==CODE_BOOK_IS_OUT_OF_PHASE_NO)||(huffsection[ndx2].codeBook==CODE_BOOK_IS_OUT_OF_PHASE_NO) 2352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project || (huffsection[ndx1].codeBook==CODE_BOOK_IS_IN_PHASE_NO)||(huffsection[ndx2].codeBook==CODE_BOOK_IS_IN_PHASE_NO) 2362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 2372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project MergeGain = -1; 2392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (MergeGain); 2422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* sectioning Stage 0:find minimum codbooks */ 2462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void FDKaacEnc_gmStage0( 2472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SECTION_INFO* const RESTRICT huffsection, 2482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT bitLookUp[MAX_SFB_LONG][CODE_BOOK_ESC_NDX + 1], 2492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT maxSfb, 2502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const noiseNrg, 2512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const isBook 2522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 2532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i; 2552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i = 0; i < maxSfb; i++) 2572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Side-Info bits will be calculated in Stage 1! */ 2592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (huffsection[i].sectionBits == INVALID_BITCOUNT) 2602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* intensity and pns codebooks are already allocated in bitcount.c */ 2622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(noiseNrg[i] != NO_NOISE_PNS){ 2632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[i].codeBook=CODE_BOOK_PNS_NO; 2642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[i].sectionBits = 0; 2652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else if( isBook[i] ) { 2672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[i].codeBook=isBook[i]; 2682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[i].sectionBits = 0; 2692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 2712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[i].sectionBits = FDKaacEnc_findBestBook(bitLookUp[i], &(huffsection[i].codeBook), 0); /* useVCB11 must be 0!!! */ 2722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 2782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectioning Stage 1:merge all connected regions with the same code book and 2792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project calculate side info 2802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 2812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void FDKaacEnc_gmStage1( 2822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SECTION_INFO* const RESTRICT huffsection, 2832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT bitLookUp[MAX_SFB_LONG][CODE_BOOK_ESC_NDX + 1], 2842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT maxSfb, 2852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SHORT* const sideInfoTab, 2862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT useVCB11 2872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 2882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT mergeStart = 0, mergeEnd; 2902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project do 2922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (mergeEnd = mergeStart + 1; mergeEnd < maxSfb; mergeEnd++) 2942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (huffsection[mergeStart].codeBook != huffsection[mergeEnd].codeBook) 2962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* we can merge. update tables, side info bits will be updated outside of this loop */ 3002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[mergeStart].sfbCnt++; 3012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[mergeStart].sectionBits += huffsection[mergeEnd].sectionBits; 3022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* update bit look up for all code books */ 3042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_mergeBitLookUp(bitLookUp[mergeStart], bitLookUp[mergeEnd]); 3052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* add side info info bits */ 3082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[mergeStart].sectionBits += FDKaacEnc_getSideInfoBits(&huffsection[mergeStart], sideInfoTab, useVCB11); 3092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[mergeEnd - 1].sfbStart = huffsection[mergeStart].sfbStart; /* speed up prev search */ 3102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project mergeStart = mergeEnd; 3122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } while (mergeStart < maxSfb); 3142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 3152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 3172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectioning Stage 2:greedy merge algorithm, merge connected sections with 3182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maximum bit gain until no more gain is possible 3192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 3202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void 3212228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKaacEnc_gmStage2( 3222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SECTION_INFO* const RESTRICT huffsection, 3232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT* const RESTRICT mergeGainLookUp, 3242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT bitLookUp[MAX_SFB_LONG][CODE_BOOK_ESC_NDX + 1], 3252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT maxSfb, 3262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SHORT* const sideInfoTab, 3272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT useVCB11 3282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 3292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i; 3312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i = 0; i + huffsection[i].sfbCnt < maxSfb; i += huffsection[i].sfbCnt) 3332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 3342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project mergeGainLookUp[i] = FDKaacEnc_CalcMergeGain(huffsection, 3352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bitLookUp, 3362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sideInfoTab, 3372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i, 3382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i + huffsection[i].sfbCnt, 3392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project useVCB11); 3402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while (TRUE) 3432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 3442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT maxMergeGain, maxNdx = 0, maxNdxNext, maxNdxLast; 3452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxMergeGain = FDKaacEnc_findMaxMerge(mergeGainLookUp, huffsection, maxSfb, &maxNdx); 3472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* exit while loop if no more gain is possible */ 3492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (maxMergeGain <= 0) 3502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 3512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxNdxNext = maxNdx + huffsection[maxNdx].sfbCnt; 3532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* merge sections with maximum bit gain */ 3552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[maxNdx].sfbCnt += huffsection[maxNdxNext].sfbCnt; 3562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[maxNdx].sectionBits += huffsection[maxNdxNext].sectionBits - maxMergeGain; 3572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* update bit look up table for merged huffsection */ 3592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_mergeBitLookUp(bitLookUp[maxNdx], bitLookUp[maxNdxNext]); 3602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* update mergeLookUpTable */ 3622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (maxNdx != 0) 3632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 3642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxNdxLast = huffsection[maxNdx - 1].sfbStart; 3652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project mergeGainLookUp[maxNdxLast] = FDKaacEnc_CalcMergeGain(huffsection, 3662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bitLookUp, 3672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sideInfoTab, 3682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxNdxLast, 3692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxNdx, 3702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project useVCB11); 3712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxNdxNext = maxNdx + huffsection[maxNdx].sfbCnt; 3742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[maxNdxNext - 1].sfbStart = huffsection[maxNdx].sfbStart; 3762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (maxNdxNext < maxSfb) 3782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project mergeGainLookUp[maxNdx] = FDKaacEnc_CalcMergeGain(huffsection, 3792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bitLookUp, 3802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sideInfoTab, 3812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxNdx, 3822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxNdxNext, 3832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project useVCB11); 3842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 3872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* count bits used by the noiseless coder */ 3892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void FDKaacEnc_noiselessCounter( 3902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SECTION_DATA* const RESTRICT sectionData, 3912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT mergeGainLookUp[MAX_SFB_LONG], 3922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT bitLookUp[MAX_SFB_LONG][CODE_BOOK_ESC_NDX + 1], 3932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SHORT* const quantSpectrum, 3942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT* const maxValueInSfb, 3952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const sfbOffset, 3962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT blockType, 3972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const noiseNrg, 3982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const isBook, 3992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT useVCB11 4002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 4012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 4022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT grpNdx, i; 4032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SHORT *sideInfoTab = NULL; 4042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SECTION_INFO *huffsection; 4052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* use appropriate side info table */ 4072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project switch (blockType) 4082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case LONG_WINDOW: 4102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case START_WINDOW: 4112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case STOP_WINDOW: 4122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sideInfoTab = FDKaacEnc_sideInfoTabLong; 4132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 4142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case SHORT_WINDOW: 4152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sideInfoTab = FDKaacEnc_sideInfoTabShort; 4162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 4172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->noOfSections = 0; 4202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->huffmanBits = 0; 4212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->sideInfoBits = 0; 4222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sectionData->maxSfbPerGroup == 0) 4252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 4262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* loop trough groups */ 4282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (grpNdx = 0; grpNdx < sectionData->sfbCnt; grpNdx += sectionData->sfbPerGroup) 4292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection = sectionData->huffsection + sectionData->noOfSections; 4312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* count bits in this group */ 4332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_buildBitLookUp(quantSpectrum, 4342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->maxSfbPerGroup, 4352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbOffset + grpNdx, 4362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxValueInSfb + grpNdx, 4372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bitLookUp, 4382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection); 4392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 0.Stage :Find minimum Codebooks */ 4412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_gmStage0(huffsection, bitLookUp, sectionData->maxSfbPerGroup, noiseNrg+grpNdx, isBook+grpNdx); 4422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 1.Stage :Merge all connected regions with the same code book */ 4442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_gmStage1(huffsection, bitLookUp, sectionData->maxSfbPerGroup, sideInfoTab, useVCB11); 4452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2.Stage 4492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project greedy merge algorithm, merge connected huffsections with maximum bit 4502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project gain until no more gain is possible 4512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 4522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_gmStage2(huffsection, 4542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project mergeGainLookUp, 4552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bitLookUp, 4562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->maxSfbPerGroup, 4572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sideInfoTab, 4582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project useVCB11); 4592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project compress output, calculate total huff and side bits 4642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project since we did not update the actual codebook in stage 2 4652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project to save time, we must set it here for later use in bitenc 4662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 4672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i = 0; i < sectionData->maxSfbPerGroup; i += huffsection[i].sfbCnt) 4692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((huffsection[i].codeBook==CODE_BOOK_PNS_NO) || 4712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (huffsection[i].codeBook==CODE_BOOK_IS_OUT_OF_PHASE_NO) || 4722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (huffsection[i].codeBook==CODE_BOOK_IS_IN_PHASE_NO)) 4732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[i].sectionBits=0; 4752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else { 4762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* the sections in the sectionData are now marked with the optimal code book */ 4772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_findBestBook(bitLookUp[i], &(huffsection[i].codeBook), useVCB11); 4792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->huffmanBits += huffsection[i].sectionBits - FDKaacEnc_getSideInfoBits(&huffsection[i], sideInfoTab, useVCB11); 4812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project huffsection[i].sfbStart += grpNdx; 4842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* sum up side info bits (section data bits) */ 4862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->sideInfoBits += FDKaacEnc_getSideInfoBits(&huffsection[i], sideInfoTab, useVCB11); 4872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->huffsection[sectionData->noOfSections++] = huffsection[i]; 4882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 4912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/******************************************************************************* 4942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project functionname: FDKaacEnc_scfCount 4962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project returns : --- 4972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project description : count bits used by scalefactors. 4982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project not in all cases if maxValueInSfb[] == 0 we set deltaScf 5002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project to zero. only if the difference of the last and future 5012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scalefacGain is not greater then CODE_BOOK_SCF_LAV (60). 5022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project example: 5042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ^ 5052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scalefacGain | 5062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | 5072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | last 75 5082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | | 5092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | | 5102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | | 5112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | | current 50 5122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | | | 5132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | | | 5142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | | | 5152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | | | 5162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | | | future 5 5172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project | | | | 5182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project --- ... ---------------------------- ... ---------> 5192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfb 5202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if maxValueInSfb[] of current is zero because of a 5232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project notfallstrategie, we do not save bits and transmit a 5242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScf of 25. otherwise the deltaScf between the last 5252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scalfacGain (75) and the future scalefacGain (5) is 70. 5262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project********************************************************************************/ 5282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void FDKaacEnc_scfCount( 5292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const scalefacGain, 5302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT* const maxValueInSfb, 5312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SECTION_DATA* const RESTRICT sectionData, 5322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const isScale 5332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 5342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 5352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i, j, k, m, n; 5362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT lastValScf = 0; 5382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT deltaScf = 0; 5392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT found = 0; 5402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT scfSkipCounter = 0; 5412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT lastValIs = 0; 5422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->scalefacBits = 0; 5442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scalefacGain == NULL) 5462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 5472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->firstScf = 0; 5492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=0; i<sectionData->noOfSections; i++) 5512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sectionData->huffsection[i].codeBook != CODE_BOOK_ZERO_NO) 5532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->firstScf = sectionData->huffsection[i].sfbStart; 5552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastValScf = scalefacGain[sectionData->firstScf]; 5562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 5572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i=0; i<sectionData->noOfSections; i++) 5612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((sectionData->huffsection[i].codeBook == CODE_BOOK_IS_OUT_OF_PHASE_NO) || 5632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (sectionData->huffsection[i].codeBook == CODE_BOOK_IS_IN_PHASE_NO)) 5642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (j = sectionData->huffsection[i].sfbStart; 5662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project j < sectionData->huffsection[i].sfbStart + sectionData->huffsection[i].sfbCnt; 5672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project j++) 5682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT deltaIs = isScale[j]-lastValIs; 5702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastValIs = isScale[j]; 5712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->scalefacBits+=FDKaacEnc_bitCountScalefactorDelta(deltaIs); 5722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } /* Intensity */ 5742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else if ((sectionData->huffsection[i].codeBook != CODE_BOOK_ZERO_NO) && 5752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (sectionData->huffsection[i].codeBook != CODE_BOOK_PNS_NO)) 5762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT tmp = sectionData->huffsection[i].sfbStart + sectionData->huffsection[i].sfbCnt; 5782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (j = sectionData->huffsection[i].sfbStart; j<tmp; j++) 5792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* check if we can repeat the last value to save bits */ 5812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (maxValueInSfb[j] == 0) 5822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project found = 0; 5842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* are scalefactors skipped? */ 5852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (scfSkipCounter == 0) 5862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* end of section */ 5882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (j == (tmp - 1) ) 5892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project found = 0; /* search in other sections for maxValueInSfb != 0 */ 5902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else 5912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* search in this section for the next maxValueInSfb[] != 0 */ 5932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (k = (j+1); k < tmp; k++) 5942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (maxValueInSfb[k] != 0) 5962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project found = 1; 5982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (fixp_abs(scalefacGain[k] - lastValScf)) <= CODE_BOOK_SCF_LAV) 5992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScf = 0; /* save bits */ 6002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else 6012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* do not save bits */ 6032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScf = lastValScf - scalefacGain[j]; 6042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastValScf = scalefacGain[j]; 6052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfSkipCounter = 0; 6062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 6082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* count scalefactor skip */ 6102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfSkipCounter++; 6112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* search for the next maxValueInSfb[] != 0 in all other sections */ 6152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (m=(i+1); (m < sectionData->noOfSections) && (found == 0); m++) 6162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((sectionData->huffsection[m].codeBook != CODE_BOOK_ZERO_NO) && (sectionData->huffsection[m].codeBook != CODE_BOOK_PNS_NO)) 6182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT end = sectionData->huffsection[m].sfbStart + sectionData->huffsection[m].sfbCnt; 6202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (n = sectionData->huffsection[m].sfbStart; n<end; n++) 6212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (maxValueInSfb[n] != 0) 6232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project found = 1; 6252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (fixp_abs(scalefacGain[n] - lastValScf) <= CODE_BOOK_SCF_LAV) 6262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScf = 0; /* save bits */ 6272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else 6282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* do not save bits */ 6302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScf = lastValScf - scalefacGain[j]; 6312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastValScf = scalefacGain[j]; 6322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfSkipCounter = 0; 6332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 6352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* count scalefactor skip */ 6372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfSkipCounter++; 6382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* no maxValueInSfb[] != 0 found */ 6422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (found == 0) 6432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScf = 0; 6452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfSkipCounter = 0; 6462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 6492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* consider skipped scalefactors */ 6502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScf = 0; 6512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scfSkipCounter--; 6522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 6552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaScf = lastValScf - scalefacGain[j]; 6562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastValScf = scalefacGain[j]; 6572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->scalefacBits += FDKaacEnc_bitCountScalefactorDelta(deltaScf); 6592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } /* for (i=0; i<sectionData->noOfSections; i++) */ 6622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 6632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#ifdef PNS_PRECOUNT_ENABLE 6652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* 6662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project preCount bits used pns 6672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 6682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* estimate bits used by pns for correction of static bits */ 6692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* no codebook switch estimation, see AAC LD FASTENC */ 6702228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT noisePreCount(const INT *noiseNrg, INT maxSfb) 6712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 6722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT noisePCMFlag = TRUE; 6732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT lastValPns = 0, deltaPns; 6742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i, bits=0; 6752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i = 0; i < maxSfb; i++) { 6772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (noiseNrg[i] != NO_NOISE_PNS) { 6782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (noisePCMFlag) { 6802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bits+=PNS_PCM_BITS; 6812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastValPns = noiseNrg[i]; 6822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project noisePCMFlag = FALSE; 6832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project }else { 6842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPns = noiseNrg[i]-lastValPns; 6852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastValPns = noiseNrg[i]; 6862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bits+=FDKaacEnc_bitCountScalefactorDelta(deltaPns); 6872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return ( bits ); 6912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 6922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif /* PNS_PRECOUNT_ENABLE */ 6932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* count bits used by pns */ 6952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void FDKaacEnc_noiseCount( 6962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SECTION_DATA* const RESTRICT sectionData, 6972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const noiseNrg 6982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 6992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 7002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT noisePCMFlag = TRUE; 7012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT lastValPns = 0, deltaPns; 7022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i, j; 7032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->noiseNrgBits = 0; 7052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i = 0; i < sectionData->noOfSections; i++) { 7072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (sectionData->huffsection[i].codeBook == CODE_BOOK_PNS_NO) { 7082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int sfbStart = sectionData->huffsection[i].sfbStart; 7092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int sfbEnd = sfbStart + sectionData->huffsection[i].sfbCnt; 7102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (j=sfbStart; j<sfbEnd; j++) { 7112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (noisePCMFlag) { 7132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->noiseNrgBits+=PNS_PCM_BITS; 7142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastValPns = noiseNrg[j]; 7152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project noisePCMFlag = FALSE; 7162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else { 7172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project deltaPns = noiseNrg[j]-lastValPns; 7182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lastValPns = noiseNrg[j]; 7192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->noiseNrgBits+=FDKaacEnc_bitCountScalefactorDelta(deltaPns); 7202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 7252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7262228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT FDKaacEnc_dynBitCount( 7272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project BITCNTR_STATE* const hBC, 7282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SHORT* const quantSpectrum, 7292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT* const maxValueInSfb, 7302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const scalefac, 7312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT blockType, 7322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT sfbCnt, 7332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT maxSfbPerGroup, 7342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT sfbPerGroup, 7352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const sfbOffset, 7362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SECTION_DATA* const RESTRICT sectionData, 7372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const noiseNrg, 7382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const isBook, 7392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT* const isScale, 7402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const UINT syntaxFlags 7412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 7422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 7432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->blockType = blockType; 7442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->sfbCnt = sfbCnt; 7452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->sfbPerGroup = sfbPerGroup; 7462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->noOfGroups = sfbCnt / sfbPerGroup; 7472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->maxSfbPerGroup = maxSfbPerGroup; 7482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_noiselessCounter( 7502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData, 7512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hBC->mergeGainLookUp, 7522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (lookUpTable)hBC->bitLookUp, 7532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project quantSpectrum, 7542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxValueInSfb, 7552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sfbOffset, 7562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project blockType, 7572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project noiseNrg, 7582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project isBook, 7592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (syntaxFlags & AC_ER_VCB11)?1:0); 7602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_scfCount( 7622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project scalefac, 7632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxValueInSfb, 7642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData, 7652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project isScale); 7662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKaacEnc_noiseCount(sectionData, 7682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project noiseNrg); 7692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (sectionData->huffmanBits + 7712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->sideInfoBits + 7722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->scalefacBits + 7732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sectionData->noiseNrgBits); 7742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 7752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7762228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT FDKaacEnc_BCNew(BITCNTR_STATE **phBC 7772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ,UCHAR* dynamic_RAM 7782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 7792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 7802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project BITCNTR_STATE *hBC = GetRam_aacEnc_BitCntrState(); 7812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hBC) 7832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 7842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *phBC = hBC; 7852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hBC->bitLookUp = GetRam_aacEnc_BitLookUp(0,dynamic_RAM); 7862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hBC->mergeGainLookUp = GetRam_aacEnc_MergeGainLookUp(0,dynamic_RAM); 7872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hBC->bitLookUp == 0 || 7882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hBC->mergeGainLookUp == 0) 7892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 7902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return 1; 7912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (hBC == 0) ? 1 : 0; 7942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 7952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid FDKaacEnc_BCClose(BITCNTR_STATE **phBC) 7972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 7982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (*phBC!=NULL) { 7992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FreeRam_aacEnc_BitCntrState(phBC); 8012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 8022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 8032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 806