12228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 22228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* ----------------------------------------------------------------------------------------------------------- 32228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSoftware License for The Fraunhofer FDK AAC Codec Library for Android 42228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 52228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project� Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur F�rderung der angewandten Forschung e.V. 62228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project All rights reserved. 72228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 82228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1. INTRODUCTION 92228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 112228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is intended to be used on a wide variety of Android devices. 122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 132228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectaudio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindependent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof the MPEG specifications. 172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 182228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectPatent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmay be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindividually for the purpose of encoding or decoding bit streams in products that are compliant with 212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthese patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware may already be covered under those patent licenses when it is used for those licensed purposes only. 242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 252228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCommercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectare also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectapplications information and documentation. 282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project2. COPYRIGHT LICENSE 302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 312228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectRedistribution and use in source and binary forms, with or without modification, are permitted without 322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectpayment of copyright license fees provided that you satisfy the following conditions: 332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 342228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in redistributions of the FDK AAC Codec or 352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectyour modifications thereto in source code form. 362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 372228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in the documentation and/or other materials 382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprovided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 392228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must make available free of charge copies of the complete source code of the FDK AAC Codec and your 402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmodifications thereto to recipients of copies in binary form. 412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 422228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe name of Fraunhofer may not be used to endorse or promote products derived from this library without 432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprior written permission. 442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 452228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware or your modifications thereto. 472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 482228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYour modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectand the date of any change. For modified versions of the FDK AAC Codec, the term 502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term 512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." 522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project3. NO PATENT LICENSE 542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 552228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectNO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 562228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectrespect to this software. 582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 592228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectby appropriate patent licenses. 612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project4. DISCLAIMER 632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 642228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors 652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties 662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 672228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectincluding but not limited to procurement of substitute goods or services; loss of use, data, or profits, 692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projector business interruption, however caused and on any theory of liability, whether in contract, strict 702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectliability, or tort (including negligence), arising in any way out of the use of this software, even if 712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectadvised of the possibility of such damage. 722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project5. CONTACT INFORMATION 742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 752228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFraunhofer Institute for Integrated Circuits IIS 762228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAttention: Audio and Multimedia Departments - FDK AAC LL 772228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAm Wolfsmantel 33 782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project91058 Erlangen, Germany 792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectwww.iis.fraunhofer.de/amm 812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectamm-info@iis.fraunhofer.de 822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------------------- */ 832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \file 862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief frequency scale 872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "sbrenc_freq_sca.h" 902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "sbr_misc.h" 912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "genericStds.h" 932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* StartFreq */ 952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT getStartFreq(INT fs, const INT start_freq); 962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* StopFreq */ 982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT getStopFreq(INT fs, const INT stop_freq, const INT noChannels); 992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT numberOfBands(INT b_p_o, INT start, INT stop, FIXP_DBL warp_factor); 1012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void CalcBands(INT * diff, INT start , INT stop , INT num_bands); 1022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT modifyBands(INT max_band, INT * diff, INT length); 1032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void cumSum(INT start_value, INT* diff, INT length, UCHAR *start_adress); 1042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/******************************************************************************* 1082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Functionname: FDKsbrEnc_getSbrStartFreqRAW 1092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ******************************************************************************* 1102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: 1112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Arguments: 1132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Return: 1152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *******************************************************************************/ 1162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1172228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT 1182228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKsbrEnc_getSbrStartFreqRAW (INT startFreq, INT QMFbands, INT fs) 1192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT result; 1212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( startFreq < 0 || startFreq > 15) { 1232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return -1; 1242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Update startFreq struct */ 1262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project result = getStartFreq(fs, startFreq); 1272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project result = (result*fs/QMFbands+1)>>1; 1292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (result); 1312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} /* End FDKsbrEnc_getSbrStartFreqRAW */ 1332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/******************************************************************************* 1362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Functionname: getSbrStopFreq 1372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ******************************************************************************* 1382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: 1392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Arguments: 1412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Return: 1432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *******************************************************************************/ 1442228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT FDKsbrEnc_getSbrStopFreqRAW (INT stopFreq, INT QMFbands, INT fs) 1452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT result; 1472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( stopFreq < 0 || stopFreq > 13) 1492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return -1; 1502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Uppdate stopFreq struct */ 1532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project result = getStopFreq( fs, stopFreq, QMFbands); 1542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project result = (result*fs/QMFbands+1)>>1; 1552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (result); 1572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} /* End getSbrStopFreq */ 1582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/******************************************************************************* 1612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Functionname: getStartFreq 1622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ******************************************************************************* 1632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: 1642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Arguments: 1662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Return: 1682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *******************************************************************************/ 1692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT 1702228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectgetStartFreq(INT fs, const INT start_freq) 1712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k0_min; 1732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project switch(fs){ 1752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 16000: k0_min = 24; 1762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 22050: k0_min = 17; 1782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 24000: k0_min = 16; 1802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 32000: k0_min = 16; 1822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 44100: k0_min = 12; 1842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 48000: k0_min = 11; 1862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 64000: k0_min = 10; 1882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 88200: k0_min = 7; 1902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 96000: k0_min = 7; 1922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project default: 1942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k0_min=11; /* illegal fs */ 1952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project switch (fs) { 1992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 16000: 2012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_offset[]= {-8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7}; 2032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (k0_min + v_offset[start_freq]); 2042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 22050: 2062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_offset[]= {-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13}; 2082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (k0_min + v_offset[start_freq]); 2092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 24000: 2112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_offset[]= {-5, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16}; 2132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (k0_min + v_offset[start_freq]); 2142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 32000: 2162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_offset[]= {-6, -4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16}; 2182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (k0_min + v_offset[start_freq]); 2192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 44100: 2212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 48000: 2222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 64000: 2232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_offset[]= {-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16, 20}; 2252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (k0_min + v_offset[start_freq]); 2262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 88200: 2282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 96000: 2292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_offset[]= {-2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16, 20, 24}; 2312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (k0_min + v_offset[start_freq]); 2322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project default: 2342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 2352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_offset[]= {0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 16, 20, 24, 28, 33}; 2362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (k0_min + v_offset[start_freq]); 2372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} /* End getStartFreq */ 2402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/******************************************************************************* 2432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Functionname: getStopFreq 2442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ******************************************************************************* 2452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: 2462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Arguments: 2482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Return: 2502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *******************************************************************************/ 2512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project static INT 2522228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectgetStopFreq(INT fs, const INT stop_freq, const INT noChannels) 2532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT result,i; 2552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k1_min; 2562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_dstop[13]; 2572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *v_stop_freq = NULL; 2602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_stop_freq_16[14] = {48,49,50,51,52,54,55,56,57,59,60,61,63,64}; 2612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_stop_freq_22[14] = {35,37,38,40,42,44,46,48,51,53,56,58,61,64}; 2622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_stop_freq_24[14] = {32,34,36,38,40,42,44,46,49,52,55,58,61,64}; 2632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_stop_freq_32[14] = {32,34,36,38,40,42,44,46,49,52,55,58,61,64}; 2642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_stop_freq_44[14] = {23,25,27,29,32,34,37,40,43,47,51,55,59,64}; 2652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_stop_freq_48[14] = {21,23,25,27,30,32,35,38,42,45,49,54,59,64}; 2662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_stop_freq_64[14] = {20,22,24,26,29,31,34,37,41,45,49,54,59,64}; 2672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_stop_freq_88[14] = {15,17,19,21,23,26,29,33,37,41,46,51,57,64}; 2682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT v_stop_freq_96[14] = {13,15,17,19,21,24,27,31,35,39,44,50,57,64}; 2692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project switch(fs){ 2712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 16000: k1_min = 48; 2722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_stop_freq =v_stop_freq_16; 2732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 22050: k1_min = 35; 2752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_stop_freq =v_stop_freq_22; 2762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 24000: k1_min = 32; 2782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_stop_freq =v_stop_freq_24; 2792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 32000: k1_min = 32; 2812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_stop_freq =v_stop_freq_32; 2822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 44100: k1_min = 23; 2842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_stop_freq =v_stop_freq_44; 2852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 48000: k1_min = 21; 2872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_stop_freq =v_stop_freq_48; 2882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 64000: k1_min = 20; 2902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_stop_freq =v_stop_freq_64; 2912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 88200: k1_min = 15; 2932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_stop_freq =v_stop_freq_88; 2942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 96000: k1_min = 13; 2962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_stop_freq =v_stop_freq_96; 2972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 2982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project default: 2992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k1_min = 21; /* illegal fs */ 3002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Ensure increasing bandwidth */ 3042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i = 0; i <= 12; i++) { 3052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_dstop[i] = v_stop_freq[i+1] - v_stop_freq[i]; 3062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKsbrEnc_Shellsort_int(v_dstop, 13); /* Sort bandwidth changes */ 3092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project result = k1_min; 3112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i = 0; i < stop_freq; i++) { 3122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project result = result + v_dstop[i]; 3132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return(result); 3162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}/* End getStopFreq */ 3182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/******************************************************************************* 3212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Functionname: FDKsbrEnc_FindStartAndStopBand 3222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ******************************************************************************* 3232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: 3242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Arguments: 3262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Return: 3282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *******************************************************************************/ 3292228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT 3302228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKsbrEnc_FindStartAndStopBand(const INT samplingFreq, 3312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT noChannels, 3322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT startFreq, 3332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT stopFreq, 3342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const SR_MODE sampleRateMode, 3352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *k0, 3362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *k2) 3372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Update startFreq struct */ 3402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *k0 = getStartFreq(samplingFreq, startFreq); 3412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Test if start freq is outside corecoder range */ 3432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if( ( sampleRateMode == 1 ) && 3442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ( samplingFreq*noChannels < 3452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2**k0 * samplingFreq) ) { 3462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (1); /* raise the cross-over frequency and/or lower the number 3472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project of target bands per octave (or lower the sampling frequency) */ 3482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /*Update stopFreq struct */ 3512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( stopFreq < 14 ) { 3522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *k2 = getStopFreq(samplingFreq, stopFreq, noChannels); 3532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else if( stopFreq == 14 ) { 3542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *k2 = 2 * *k0; 3552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else { 3562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *k2 = 3 * *k0; 3572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* limit to Nyqvist */ 3602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (*k2 > noChannels) { 3612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *k2 = noChannels; 3622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Test for invalid k0 k2 combinations */ 3672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (samplingFreq == 44100) && ( (*k2 - *k0) > MAX_FREQ_COEFFS_FS44100 ) ) 3682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (1); /* Number of bands exceeds valid range of MAX_FREQ_COEFFS for fs=44.1kHz */ 3692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (samplingFreq >= 48000) && ( (*k2 - *k0) > MAX_FREQ_COEFFS_FS48000 ) ) 3712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (1); /* Number of bands exceeds valid range of MAX_FREQ_COEFFS for fs>=48kHz */ 3722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((*k2 - *k0) > MAX_FREQ_COEFFS) 3742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (1);/*Number of bands exceeds valid range of MAX_FREQ_COEFFS */ 3752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((*k2 - *k0) < 0) 3772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (1);/* Number of bands is negative */ 3782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return(0); 3812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 3822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/******************************************************************************* 3842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Functionname: FDKsbrEnc_UpdateFreqScale 3852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ******************************************************************************* 3862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: 3872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Arguments: 3892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Return: 3912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *******************************************************************************/ 3922228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT 3932228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKsbrEnc_UpdateFreqScale(UCHAR *v_k_master, INT *h_num_bands, 3942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT k0, const INT k2, 3952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT freqScale, 3962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const INT alterScale) 3972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 3992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT b_p_o = 0; /* bands_per_octave */ 4012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL warp = FL2FXCONST_DBL(0.0f); 4022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT dk = 0; 4032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Internal variables */ 4052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k1 = 0, i; 4062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT num_bands0; 4072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT num_bands1; 4082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT diff_tot[MAX_OCTAVE + MAX_SECOND_REGION]; 4092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *diff0 = diff_tot; 4102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT *diff1 = diff_tot+MAX_OCTAVE; 4112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k2_achived; 4122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k2_diff; 4132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT incr = 0; 4142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Init */ 4162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (freqScale==1) b_p_o = 12; 4172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (freqScale==2) b_p_o = 10; 4182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (freqScale==3) b_p_o = 8; 4192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(freqScale > 0) /*Bark*/ 4222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(alterScale==0) 4242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project warp = FL2FXCONST_DBL(0.5f); /* 1.0/(1.0*2.0) */ 4252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else 4262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project warp = FL2FXCONST_DBL(1.0f/2.6f); /* 1.0/(1.3*2.0); */ 4272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(4*k2 >= 9*k0) /*two or more regions*/ 4302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k1=2*k0; 4322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands0=numberOfBands(b_p_o, k0, k1, FL2FXCONST_DBL(0.5f)); 4342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands1=numberOfBands(b_p_o, k1, k2, warp); 4352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CalcBands(diff0, k0, k1, num_bands0);/*CalcBands1 => diff0 */ 4372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKsbrEnc_Shellsort_int( diff0, num_bands0);/*SortBands sort diff0 */ 4382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (diff0[0] == 0) /* too wide FB bands for target tuning */ 4402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (1);/* raise the cross-over frequency and/or lower the number 4422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project of target bands per octave (or lower the sampling frequency */ 4432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project cumSum(k0, diff0, num_bands0, v_k_master); /* cumsum */ 4462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CalcBands(diff1, k1, k2, num_bands1); /* CalcBands2 => diff1 */ 4482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKsbrEnc_Shellsort_int( diff1, num_bands1); /* SortBands sort diff1 */ 4492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(diff0[num_bands0-1] > diff1[0]) /* max(1) > min(2) */ 4502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(modifyBands(diff0[num_bands0-1],diff1, num_bands1)) 4522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return(1); 4532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Add 2'nd region */ 4562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project cumSum(k1, diff1, num_bands1, &v_k_master[num_bands0]); 4572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *h_num_bands=num_bands0+num_bands1; /* Output nr of bands */ 4582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else /* one region */ 4612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k1=k2; 4632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands0=numberOfBands(b_p_o, k0, k1, FL2FXCONST_DBL(0.5f)); 4652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CalcBands(diff0, k0, k1, num_bands0);/* CalcBands1 => diff0 */ 4662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKsbrEnc_Shellsort_int( diff0, num_bands0); /* SortBands sort diff0 */ 4672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (diff0[0] == 0) /* too wide FB bands for target tuning */ 4692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (1); /* raise the cross-over frequency and/or lower the number 4712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project of target bands per octave (or lower the sampling frequency */ 4722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project cumSum(k0, diff0, num_bands0, v_k_master);/* cumsum */ 4752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *h_num_bands=num_bands0; /* Output nr of bands */ 4762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else /* Linear mode */ 4802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 4812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (alterScale==0) { 4822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dk = 1; 4832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands0 = 2 * ((k2 - k0)/2); /* FLOOR to get to few number of bands*/ 4842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else { 4852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dk = 2; 4862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands0 = 2 * (((k2 - k0)/dk +1)/2); /* ROUND to get closest fit */ 4872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2_achived = k0 + num_bands0*dk; 4902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2_diff = k2 - k2_achived; 4912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=0;i<num_bands0;i++) 4932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project diff_tot[i] = dk; 4942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* If linear scale wasn't achived */ 4962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* and we got wide SBR are */ 4972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (k2_diff < 0) { 4982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project incr = 1; 4992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i = 0; 5002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* If linear scale wasn't achived */ 5032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* and we got small SBR are */ 5042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (k2_diff > 0) { 5052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project incr = -1; 5062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i = num_bands0-1; 5072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Adjust diff vector to get sepc. SBR range */ 5102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while (k2_diff != 0) { 5112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project diff_tot[i] = diff_tot[i] - incr; 5122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i = i + incr; 5132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2_diff = k2_diff + incr; 5142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project cumSum(k0, diff_tot, num_bands0, v_k_master);/* cumsum */ 5172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *h_num_bands=num_bands0; /* Output nr of bands */ 5182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (*h_num_bands < 1) 5222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return(1); /*To small sbr area */ 5232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (0); 5252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}/* End FDKsbrEnc_UpdateFreqScale */ 5262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT 5282228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectnumberOfBands(INT b_p_o, INT start, INT stop, FIXP_DBL warp_factor) 5292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 5302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT result=0; 5312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* result = 2* (INT) ( (double)b_p_o * (double)(FDKlog((double)stop/(double)start)/FDKlog((double)2)) * (double)FX_DBL2FL(warp_factor) + 0.5); */ 5322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project result = ( ( b_p_o * fMult( (CalcLdInt(stop) - CalcLdInt(start)), warp_factor) + (FL2FX_DBL(0.5f)>>LD_DATA_SHIFT) 5332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) >> ((DFRACT_BITS-1)-LD_DATA_SHIFT) ) << 1; /* do not optimize anymore (rounding!!) */ 5342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return(result); 5362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 5372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void 5402228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCalcBands(INT * diff, INT start , INT stop , INT num_bands) 5412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 5422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i, qb, qe, qtmp; 5432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT previous; 5442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT current; 5452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL base, exp, tmp; 5462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project previous=start; 5482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=1; i<= num_bands; i++) 5492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project base = fDivNorm((FIXP_DBL)stop, (FIXP_DBL)start, &qb); 5512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project exp = fDivNorm((FIXP_DBL)i, (FIXP_DBL)num_bands, &qe); 5522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project tmp = fPow(base, qb, exp, qe, &qtmp); 5532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project tmp = fMult(tmp, (FIXP_DBL)(start<<24)); 5542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project current = (INT)scaleValue(tmp, qtmp-23); 5552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project current = (current+1) >> 1; /* rounding*/ 5562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project diff[i-1] = current-previous; 5572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project previous = current; 5582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}/* End CalcBands */ 5612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void 5642228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectcumSum(INT start_value, INT* diff, INT length, UCHAR *start_adress) 5652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 5662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i; 5672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project start_adress[0]=start_value; 5682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=1;i<=length;i++) 5692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project start_adress[i]=start_adress[i-1]+diff[i-1]; 5702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} /* End cumSum */ 5712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic INT 5742228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectmodifyBands(INT max_band_previous, INT * diff, INT length) 5752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 5762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT change=max_band_previous-diff[0]; 5772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Limit the change so that the last band cannot get narrower than the first one */ 5792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( change > (diff[length-1] - diff[0]) / 2 ) 5802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project change = (diff[length-1] - diff[0]) / 2; 5812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project diff[0] += change; 5832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project diff[length-1] -= change; 5842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKsbrEnc_Shellsort_int(diff, length); 5852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return(0); 5872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}/* End modifyBands */ 5882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/******************************************************************************* 5912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Functionname: FDKsbrEnc_UpdateHiRes 5922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ******************************************************************************* 5932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: 5942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Arguments: 5962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Return: 5982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *******************************************************************************/ 5992228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectINT 6002228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKsbrEnc_UpdateHiRes(UCHAR *h_hires, INT *num_hires,UCHAR * v_k_master, 6012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT num_master , INT *xover_band, SR_MODE drOrSr, 6022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT noQMFChannels) 6032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 6042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i; 6052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT divider; 6062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT max1,max2; 6072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Check if we use a Dual rate => diver=2 else 1 */ 6092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project divider = (drOrSr == DUAL_RATE) ? 2 : 1; 6102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if( (v_k_master[*xover_band] > (noQMFChannels/divider) ) || 6122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ( *xover_band > num_master ) ) { 6132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* xover_band error, too big for this startFreq. Will be clipped */ 6142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Calculate maximum value for xover_band */ 6162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project max1=0; 6172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project max2=num_master; 6182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while( (v_k_master[max1+1] < (noQMFChannels/divider)) && 6192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ( (max1+1) < max2) ) 6202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project max1++; 6222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *xover_band=max1; 6252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *num_hires = num_master - *xover_band; 6282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i = *xover_band; i <= num_master; i++) 6292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project h_hires[i - *xover_band] = v_k_master[i]; 6312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return (0); 6342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}/* End FDKsbrEnc_UpdateHiRes */ 6352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/******************************************************************************* 6382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Functionname: FDKsbrEnc_UpdateLoRes 6392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ******************************************************************************* 6402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: 6412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Arguments: 6432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Return: 6452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *******************************************************************************/ 6462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid 6472228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFDKsbrEnc_UpdateLoRes(UCHAR * h_lores, INT *num_lores, UCHAR * h_hires, INT num_hires) 6482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 6492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT i; 6502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(num_hires%2 == 0) /* if even number of hires bands */ 6522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *num_lores=num_hires/2; 6542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Use every second lores=hires[0,2,4...] */ 6552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=0;i<=*num_lores;i++) 6562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project h_lores[i]=h_hires[i*2]; 6572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else /* odd number of hires which means xover is odd */ 6602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *num_lores=(num_hires+1)/2; 6622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Use lores=hires[0,1,3,5 ...] */ 6642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project h_lores[0]=h_hires[0]; 6652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=1;i<=*num_lores;i++) 6662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 6672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project h_lores[i]=h_hires[i*2-1]; 6682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}/* End FDKsbrEnc_UpdateLoRes */ 672