12228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 22228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* ----------------------------------------------------------------------------------------------------------- 32228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSoftware License for The Fraunhofer FDK AAC Codec Library for Android 42228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 54f0d97057c5c640b25518358886f8c47da9fc052Jean-Michel Trivi� Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur F�rderung der angewandten Forschung e.V. 62228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project All rights reserved. 72228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 82228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1. INTRODUCTION 92228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 112228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is intended to be used on a wide variety of Android devices. 122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 132228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectaudio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindependent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof the MPEG specifications. 172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 182228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectPatent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmay be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindividually for the purpose of encoding or decoding bit streams in products that are compliant with 212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthese patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware may already be covered under those patent licenses when it is used for those licensed purposes only. 242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 252228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCommercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectare also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectapplications information and documentation. 282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project2. COPYRIGHT LICENSE 302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 312228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectRedistribution and use in source and binary forms, with or without modification, are permitted without 322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectpayment of copyright license fees provided that you satisfy the following conditions: 332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 342228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in redistributions of the FDK AAC Codec or 352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectyour modifications thereto in source code form. 362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 372228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in the documentation and/or other materials 382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprovided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 392228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must make available free of charge copies of the complete source code of the FDK AAC Codec and your 402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmodifications thereto to recipients of copies in binary form. 412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 422228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe name of Fraunhofer may not be used to endorse or promote products derived from this library without 432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprior written permission. 442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 452228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware or your modifications thereto. 472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 482228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYour modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectand the date of any change. For modified versions of the FDK AAC Codec, the term 502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term 512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." 522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project3. NO PATENT LICENSE 542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 552228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectNO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 562228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectrespect to this software. 582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 592228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectby appropriate patent licenses. 612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project4. DISCLAIMER 632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 642228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors 652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties 662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 672228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectincluding but not limited to procurement of substitute goods or services; loss of use, data, or profits, 692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projector business interruption, however caused and on any theory of liability, whether in contract, strict 702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectliability, or tort (including negligence), arising in any way out of the use of this software, even if 712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectadvised of the possibility of such damage. 722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project5. CONTACT INFORMATION 742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 752228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFraunhofer Institute for Integrated Circuits IIS 762228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAttention: Audio and Multimedia Departments - FDK AAC LL 772228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAm Wolfsmantel 33 782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project91058 Erlangen, Germany 792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectwww.iis.fraunhofer.de/amm 812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectamm-info@iis.fraunhofer.de 822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------------------- */ 832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \file 862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Frequency scale calculation 872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "sbrdec_freq_sca.h" 902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "transcendent.h" 922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "sbr_rom.h" 932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "env_extr.h" 942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "genericStds.h" /* need log() for debug-code only */ 962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#define MAX_OCTAVE 29 982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#define MAX_SECOND_REGION 50 992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic int numberOfBands(FIXP_SGL bpo_div16, int start, int stop, int warpFlag); 1022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void CalcBands(UCHAR * diff, UCHAR start, UCHAR stop, UCHAR num_bands); 1032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic SBR_ERROR modifyBands(UCHAR max_band, UCHAR * diff, UCHAR length); 1042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void cumSum(UCHAR start_value, UCHAR* diff, UCHAR length, UCHAR *start_adress); 1052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 1092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Retrieve QMF-band where the SBR range starts 1102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Convert startFreq which was read from the bitstream into a 1122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QMF-channel number. 1132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return Number of start band 1152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 1162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic UCHAR 1172228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectgetStartBand(UINT fs, /*!< Output sampling frequency */ 1182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR startFreq, /*!< Index to table of possible start bands */ 1192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT headerDataFlags) /*!< Info to SBR mode */ 1202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT band; 1222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT fsMapped; 1232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project fsMapped = fs; 1252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project switch (fsMapped) { 1278bd0baee9e37c226c6e30593be90e8ecdb559f2eJean-Michel Trivi case 96000: 1288bd0baee9e37c226c6e30593be90e8ecdb559f2eJean-Michel Trivi case 88200: 1298bd0baee9e37c226c6e30593be90e8ecdb559f2eJean-Michel Trivi band = FDK_sbrDecoder_sbr_start_freq_88[startFreq]; 1308bd0baee9e37c226c6e30593be90e8ecdb559f2eJean-Michel Trivi break; 1318bd0baee9e37c226c6e30593be90e8ecdb559f2eJean-Michel Trivi case 64000: 1328bd0baee9e37c226c6e30593be90e8ecdb559f2eJean-Michel Trivi band = FDK_sbrDecoder_sbr_start_freq_64[startFreq]; 1338bd0baee9e37c226c6e30593be90e8ecdb559f2eJean-Michel Trivi break; 1342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 48000: 1352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project band = FDK_sbrDecoder_sbr_start_freq_48[startFreq]; 1362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 44100: 1382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project band = FDK_sbrDecoder_sbr_start_freq_44[startFreq]; 1392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 32000: 1412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project band = FDK_sbrDecoder_sbr_start_freq_32[startFreq]; 1422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 24000: 1442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project band = FDK_sbrDecoder_sbr_start_freq_24[startFreq]; 1452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 22050: 1472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project band = FDK_sbrDecoder_sbr_start_freq_22[startFreq]; 1482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project case 16000: 1502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project band = FDK_sbrDecoder_sbr_start_freq_16[startFreq]; 1512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 1522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project default: 1532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project band = 255; 1542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return band; 1572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 1612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Retrieve QMF-band where the SBR range starts 1622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Convert startFreq which was read from the bitstream into a 1642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project QMF-channel number. 1652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return Number of start band 1672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 1682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic UCHAR 1692228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectgetStopBand(UINT fs, /*!< Output sampling frequency */ 1702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR stopFreq, /*!< Index to table of possible start bands */ 1712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT headerDataFlags, /*!< Info to SBR mode */ 1722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR k0) /*!< Start freq index */ 1732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR k2; 1752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (stopFreq < 14) { 1772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT stopMin; 1782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR diff_tot[MAX_OCTAVE + MAX_SECOND_REGION]; 1792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR *diff0 = diff_tot; 1802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR *diff1 = diff_tot+MAX_OCTAVE; 1812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (fs < 32000) { 1832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopMin = (((2*6000*2*(64)) / fs) + 1) >> 1; 1842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 1862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (fs < 64000) { 1872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopMin = (((2*8000*2*(64)) / fs) + 1) >> 1; 1882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 1902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopMin = (((2*10000*2*(64)) / fs) + 1) >> 1; 1912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 1952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Choose a stop band between k1 and 64 depending on stopFreq (0..13), 1962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project based on a logarithmic scale. 1972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project The vectors diff0 and diff1 are used temporarily here. 1982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 1992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CalcBands( diff0, stopMin, 64, 13); 2002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project shellsort( diff0, 13); 2012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project cumSum(stopMin, diff0, 13, diff1); 2022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2 = diff1[stopFreq]; 2032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else if (stopFreq==14) 2052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2 = 2*k0; 2062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else 2072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2 = 3*k0; 2082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Limit to Nyquist */ 2102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (k2 > (64)) 2112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2 = (64); 2122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Range checks */ 2152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 1 <= difference <= 48; 1 <= fs <= 96000 */ 2162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( ((k2 - k0) > MAX_FREQ_COEFFS) || (k2 <= k0) ) { 2172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return 255; 2182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (headerDataFlags & (SBRDEC_SYNTAX_USAC|SBRDEC_SYNTAX_RSVD50)) { 2212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 1 <= difference <= 35; 42000 <= fs <= 96000 */ 2222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (fs >= 42000) && ( (k2 - k0) > MAX_FREQ_COEFFS_FS44100 ) ) { 2232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return 255; 2242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 1 <= difference <= 32; 46009 <= fs <= 96000 */ 2262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (fs >= 46009) && ( (k2 - k0) > MAX_FREQ_COEFFS_FS48000 ) ) { 2272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return 255; 2282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 2312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 1 <= difference <= 35; fs == 44100 */ 2322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (fs == 44100) && ( (k2 - k0) > MAX_FREQ_COEFFS_FS44100 ) ) { 2332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return 255; 2342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 1 <= difference <= 32; 48000 <= fs <= 96000 */ 2362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (fs >= 48000) && ( (k2 - k0) > MAX_FREQ_COEFFS_FS48000 ) ) { 2372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return 255; 2382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return k2; 2422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 2432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 2462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Generates master frequency tables 2472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Frequency tables are calculated according to the selected domain 2492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project (linear/logarithmic) and granularity. 2502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project IEC 14496-3 4.6.18.3.2.1 2512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return errorCode, 0 if successful 2532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 2542228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSBR_ERROR 2552228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectsbrdecUpdateFreqScale(UCHAR * v_k_master, /*!< Master table to be created */ 2562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR *numMaster, /*!< Number of entries in master table */ 2572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT fs, /*!< SBR working sampling rate */ 2582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Control data from bitstream */ 2592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT flags) 2602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_SGL bpo_div16; /* bands_per_octave divided by 16 */ 2622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT dk=0; 2632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Internal variables */ 2652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR k0, k2, i; 2662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR num_bands0 = 0; 2672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR num_bands1 = 0; 2682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR diff_tot[MAX_OCTAVE + MAX_SECOND_REGION]; 2692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR *diff0 = diff_tot; 2702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR *diff1 = diff_tot+MAX_OCTAVE; 2712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k2_achived; 2722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k2_diff; 2732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT incr=0; 2742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 2762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Determine start band 2772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 2782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k0 = getStartBand(fs, hHeaderData->bs_data.startFreq, flags); 2792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (k0 == 255) { 2802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 2812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 2842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Determine stop band 2852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 2862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2 = getStopBand(fs, hHeaderData->bs_data.stopFreq, flags, k0); 2872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (k2 == 255) { 2882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 2892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(hHeaderData->bs_data.freqScale>0) { /* Bark */ 2922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k1; 2932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(hHeaderData->bs_data.freqScale==1) { 2952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bpo_div16 = FL2FXCONST_SGL(12.0f/16.0f); 2962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else if(hHeaderData->bs_data.freqScale==2) { 2982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bpo_div16 = FL2FXCONST_SGL(10.0f/16.0f); 2992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 3012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bpo_div16 = FL2FXCONST_SGL(8.0f/16.0f); 3022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if( 1000 * k2 > 2245 * k0 ) { /* Two or more regions */ 3062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k1 = 2*k0; 3072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands0 = numberOfBands(bpo_div16, k0, k1, 0); 3092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands1 = numberOfBands(bpo_div16, k1, k2, hHeaderData->bs_data.alterScale ); 3102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( num_bands0 < 1) { 3112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 3122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( num_bands1 < 1 ) { 3142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 3152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CalcBands(diff0, k0, k1, num_bands0); 3182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project shellsort( diff0, num_bands0); 3192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (diff0[0] == 0) { 3202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#ifdef DEBUG_TOOLS 3212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 3222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 3232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project cumSum(k0, diff0, num_bands0, v_k_master); 3262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CalcBands(diff1, k1, k2, num_bands1); 3282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project shellsort( diff1, num_bands1); 3292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if(diff0[num_bands0-1] > diff1[0]) { 3302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SBR_ERROR err; 3312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project err = modifyBands(diff0[num_bands0-1],diff1, num_bands1); 3332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (err) 3342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 3352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Add 2nd region */ 3382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project cumSum(k1, diff1, num_bands1, &v_k_master[num_bands0]); 3392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *numMaster = num_bands0 + num_bands1; /* Output nr of bands */ 3402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { /* Only one region */ 3432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k1=k2; 3442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands0 = numberOfBands(bpo_div16, k0, k1, 0); 3462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( num_bands0 < 1) { 3472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 3482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project CalcBands(diff0, k0, k1, num_bands0); 3502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project shellsort(diff0, num_bands0); 3512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (diff0[0] == 0) { 3522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#ifdef DEBUG_TOOLS 3532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif 3542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 3552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project cumSum(k0, diff0, num_bands0, v_k_master); 3582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *numMaster = num_bands0; /* Output nr of bands */ 3592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { /* Linear mode */ 3632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hHeaderData->bs_data.alterScale==0) { 3642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dk = 1; 3652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* FLOOR to get to few number of bands (next lower even number) */ 3662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands0 = (k2 - k0) & 254; 3672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } else { 3682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project dk = 2; 3692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands0 = ( ((k2 - k0) >> 1) + 1 ) & 254; /* ROUND to the closest fit */ 3702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (num_bands0 < 1) { 3732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 3742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* We must return already here because 'i' can become negative below. */ 3752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2_achived = k0 + num_bands0*dk; 3782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2_diff = k2 - k2_achived; 3792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=0;i<num_bands0;i++) 3812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project diff_tot[i] = dk; 3822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* If linear scale wasn't achieved */ 3842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* and we got too wide SBR area */ 3852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (k2_diff < 0) { 3862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project incr = 1; 3872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i = 0; 3882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* If linear scale wasn't achieved */ 3912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* and we got too small SBR area */ 3922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (k2_diff > 0) { 3932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project incr = -1; 3942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i = num_bands0-1; 3952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Adjust diff vector to get sepc. SBR range */ 3982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while (k2_diff != 0) { 3992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project diff_tot[i] = diff_tot[i] - incr; 4002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i = i + incr; 4012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2_diff = k2_diff + incr; 4022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project cumSum(k0, diff_tot, num_bands0, v_k_master);/* cumsum */ 4052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *numMaster = num_bands0; /* Output nr of bands */ 4062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (*numMaster < 1) { 4092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 4102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 4142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Print out the calculated table 4152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 4162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_OK; 4182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 4192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 4222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Calculate frequency ratio of one SBR band 4232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project All SBR bands should span a constant frequency range in the logarithmic 4252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project domain. This function calculates the ratio of any SBR band's upper and lower 4262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project frequency. 4272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return num_band-th root of k_start/k_stop 4292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 4302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic FIXP_SGL calcFactorPerBand(int k_start, int k_stop, int num_bands) 4312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 4322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* Scaled bandfactor and step 1 bit right to avoid overflow 4332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * use double data type */ 4342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL bandfactor = FL2FXCONST_DBL(0.25f); /* Start value */ 4352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL step = FL2FXCONST_DBL(0.125f); /* Initial increment for factor */ 4362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int direction = 1; 4382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* Because saturation can't be done in INT IIS, 4402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project * changed start and stop data type from FIXP_SGL to FIXP_DBL */ 4412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL start = k_start << (DFRACT_BITS-8); 4422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL stop = k_stop << (DFRACT_BITS-8); 4432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL temp; 4452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int j, i=0; 4472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while ( step > FL2FXCONST_DBL(0.0f)) { 4492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i++; 4502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project temp = stop; 4512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Calculate temp^num_bands: */ 4532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (j=0; j<num_bands; j++) 4542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project //temp = fMult(temp,bandfactor); 4552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project temp = fMultDiv2(temp,bandfactor)<<2; 4562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (temp<start) { /* Factor too strong, make it weaker */ 4582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (direction == 0) 4592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Halfen step. Right shift is not done as fract because otherwise the 4602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lowest bit cannot be cleared due to rounding */ 4612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project step = (FIXP_DBL)((LONG)step >> 1); 4622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project direction = 1; 4632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bandfactor = bandfactor + step; 4642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { /* Factor is too weak: make it stronger */ 4662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (direction == 1) 4672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project step = (FIXP_DBL)((LONG)step >> 1); 4682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project direction = 0; 4692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bandfactor = bandfactor - step; 4702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (i>100) { 4732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project step = FL2FXCONST_DBL(0.0f); 4742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return FX_DBL2FX_SGL(bandfactor<<1); 4772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 4782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 4812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Calculate number of SBR bands between start and stop band 4822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Given the number of bands per octave, this function calculates how many 4842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bands fit in the given frequency range. 4852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project When the warpFlag is set, the 'band density' is decreased by a factor 4862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project of 1/1.3 4872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return number of bands 4892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 4902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic int 4912228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectnumberOfBands(FIXP_SGL bpo_div16, /*!< Input: number of bands per octave divided by 16 */ 4922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int start, /*!< First QMF band of SBR frequency range */ 4932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int stop, /*!< Last QMF band of SBR frequency range + 1 */ 4942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int warpFlag) /*!< Stretching flag */ 4952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 4962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_SGL num_bands_div128; 4972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int num_bands; 4982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands_div128 = FX_DBL2FX_SGL(fMult(FDK_getNumOctavesDiv8(start,stop),bpo_div16)); 5002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (warpFlag) { 5022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Apply the warp factor of 1.3 to get wider bands. We use a value 5032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project of 32768/25200 instead of the exact value to avoid critical cases 5042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project of rounding. 5052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project */ 5062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands_div128 = FX_DBL2FX_SGL(fMult(num_bands_div128, FL2FXCONST_SGL(25200.0/32768.0))); 5072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* add scaled 1 for rounding to even numbers: */ 5102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands_div128 = num_bands_div128 + FL2FXCONST_SGL( 1.0f/128.0f ); 5112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* scale back to right aligned integer and double the value: */ 5122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project num_bands = 2 * ((LONG)num_bands_div128 >> (FRACT_BITS - 7)); 5132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return(num_bands); 5152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 5162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 5192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Calculate width of SBR bands 5202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Given the desired number of bands within the SBR frequency range, 5222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project this function calculates the width of each SBR band in QMF channels. 5232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project The bands get wider from start to stop (bark scale). 5242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 5252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void 5262228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCalcBands(UCHAR * diff, /*!< Vector of widths to be calculated */ 5272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR start, /*!< Lower end of subband range */ 5282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR stop, /*!< Upper end of subband range */ 5292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR num_bands) /*!< Desired number of bands */ 5302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 5312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i; 5322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int previous; 5332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int current; 5342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_SGL exact, temp; 5352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_SGL bandfactor = calcFactorPerBand(start, stop, num_bands); 5362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project previous = stop; /* Start with highest QMF channel */ 5382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project exact = (FIXP_SGL)(stop << (FRACT_BITS-8)); /* Shift left to gain some accuracy */ 5392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=num_bands-1; i>=0; i--) { 5412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Calculate border of next lower sbr band */ 5422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project exact = FX_DBL2FX_SGL(fMult(exact,bandfactor)); 5432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Add scaled 0.5 for rounding: 5452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project We use a value 128/256 instead of 0.5 to avoid some critical cases of rounding. */ 5462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project temp = exact + FL2FXCONST_SGL(128.0/32768.0); 5472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* scale back to right alinged integer: */ 5492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project current = (LONG)temp >> (FRACT_BITS-8); 5502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Save width of band i */ 5522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project diff[i] = previous - current; 5532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project previous = current; 5542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 5562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 5592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Calculate cumulated sum vector from delta vector 5602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 5612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void 5622228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectcumSum(UCHAR start_value, UCHAR* diff, UCHAR length, UCHAR *start_adress) 5632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 5642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i; 5652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project start_adress[0]=start_value; 5662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=1; i<=length; i++) 5672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project start_adress[i] = start_adress[i-1] + diff[i-1]; 5682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 5692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 5722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Adapt width of frequency bands in the second region 5732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project If SBR spans more than 2 octaves, the upper part of a bark-frequency-scale 5752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project is calculated separately. This function tries to avoid that the second region 5762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project starts with a band smaller than the highest band of the first region. 5772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 5782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic SBR_ERROR 5792228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectmodifyBands(UCHAR max_band_previous, UCHAR * diff, UCHAR length) 5802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 5812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int change = max_band_previous - diff[0]; 5822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Limit the change so that the last band cannot get narrower than the first one */ 5842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( change > (diff[length-1]-diff[0])>>1 ) 5852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project change = (diff[length-1]-diff[0])>>1; 5862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project diff[0] += change; 5882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project diff[length-1] -= change; 5892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project shellsort(diff, length); 5902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_OK; 5922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 5932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 5962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Update high resolution frequency band table 5972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 5982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void 5992228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectsbrdecUpdateHiRes(UCHAR * h_hires, 6002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR * num_hires, 6012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR * v_k_master, 6022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR num_bands, 6032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR xover_band) 6042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 6052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR i; 6062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *num_hires = num_bands-xover_band; 6082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=xover_band; i<=num_bands; i++) { 6102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project h_hires[i-xover_band] = v_k_master[i]; 6112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 6132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 6162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Build low resolution table out of high resolution table 6172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 6182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void 6192228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectsbrdecUpdateLoRes(UCHAR * h_lores, 6202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR * num_lores, 6212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR * h_hires, 6222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR num_hires) 6232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 6242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR i; 6252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if( (num_hires & 1) == 0) { 6272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* If even number of hires bands */ 6282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *num_lores = num_hires >> 1; 6292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Use every second lores=hires[0,2,4...] */ 6302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=0; i<=*num_lores; i++) 6312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project h_lores[i] = h_hires[i*2]; 6322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 6342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Odd number of hires, which means xover is odd */ 6352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *num_lores = (num_hires+1) >> 1; 6362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Use lores=hires[0,1,3,5 ...] */ 6372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project h_lores[0] = h_hires[0]; 6382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(i=1; i<=*num_lores; i++) { 6392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project h_lores[i] = h_hires[i*2-1]; 6402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 6432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 6462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Derive a low-resolution frequency-table from the master frequency table 6472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 6482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid 6492228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectsbrdecDownSampleLoRes(UCHAR *v_result, 6502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR num_result, 6512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR *freqBandTableRef, 6522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR num_Ref) 6532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 6542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int step; 6552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i,j; 6562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int org_length,result_length; 6572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int v_index[MAX_FREQ_COEFFS>>1]; 6582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* init */ 6602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project org_length = num_Ref; 6612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project result_length = num_result; 6622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_index[0] = 0; /* Always use left border */ 6642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i=0; 6652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while(org_length > 0) { 6662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Create downsample vector */ 6672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project i++; 6682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project step = org_length / result_length; 6692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project org_length = org_length - step; 6702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project result_length--; 6712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_index[i] = v_index[i-1] + step; 6722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for(j=0;j<=i;j++) { 6752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Use downsample vector to index LoResolution vector */ 6762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v_result[j]=freqBandTableRef[v_index[j]]; 6772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 6782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 6802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 6832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Sorting routine 6842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 6852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid shellsort(UCHAR *in, UCHAR n) 6862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 6872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int i, j, v, w; 6892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int inc = 1; 6902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project do 6922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project inc = 3 * inc + 1; 6932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while (inc <= n); 6942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 6952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project do { 6962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project inc = inc / 3; 6972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (i = inc; i < n; i++) { 6982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project v = in[i]; 6992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project j = i; 7002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project while ((w=in[j-inc]) > v) { 7012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project in[j] = w; 7022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project j -= inc; 7032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (j < inc) 7042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project break; 7052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project in[j] = v; 7072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } while (inc > 1); 7092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 7112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 7152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Reset frequency band tables 7162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return errorCode, 0 if successful 7172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 7182228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSBR_ERROR 7192228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectresetFreqBandTables(HANDLE_SBR_HEADER_DATA hHeaderData, const UINT flags) 7202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 7212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SBR_ERROR err = SBRDEC_OK; 7222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int k2,kx, lsb, usb; 7232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int intTemp; 7242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UCHAR nBandsLo, nBandsHi; 7252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_FREQ_BAND_DATA hFreq = &hHeaderData->freqBandData; 7262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Calculate master frequency function */ 7282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project err = sbrdecUpdateFreqScale(hFreq->v_k_master, 7292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project &hFreq->numMaster, 7302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData->sbrProcSmplRate, 7312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hHeaderData, 7322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project flags); 7332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( err || (hHeaderData->bs_info.xover_band > hFreq->numMaster) ) { 7352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 7362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Derive Hiresolution from master frequency function */ 7392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrdecUpdateHiRes(hFreq->freqBandTable[1], &nBandsHi, hFreq->v_k_master, hFreq->numMaster, hHeaderData->bs_info.xover_band ); 7402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Derive Loresolution from Hiresolution */ 7412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrdecUpdateLoRes(hFreq->freqBandTable[0], &nBandsLo, hFreq->freqBandTable[1], nBandsHi); 7422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hFreq->nSfb[0] = nBandsLo; 7452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hFreq->nSfb[1] = nBandsHi; 7462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Check index to freqBandTable[0] */ 7482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( !(nBandsLo > 0) || (nBandsLo > (MAX_FREQ_COEFFS>>1)) ) { 7492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 7502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project lsb = hFreq->freqBandTable[0][0]; 7532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project usb = hFreq->freqBandTable[0][nBandsLo]; 7542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Additional check for lsb */ 7562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ( (lsb > (32)) || (lsb >= usb) ) { 7572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 7582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Calculate number of noise bands */ 7622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project k2 = hFreq->freqBandTable[1][nBandsHi]; 7642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project kx = hFreq->freqBandTable[1][0]; 7652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hHeaderData->bs_data.noise_bands == 0) 7672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 7682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hFreq->nNfb = 1; 7692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else /* Calculate no of noise bands 1,2 or 3 bands/octave */ 7712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 7722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Fetch number of octaves divided by 32 */ 7732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project intTemp = (LONG)FDK_getNumOctavesDiv8(kx,k2) >> 2; 7742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Integer-Multiplication with number of bands: */ 7762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project intTemp = intTemp * hHeaderData->bs_data.noise_bands; 7772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Add scaled 0.5 for rounding: */ 7792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project intTemp = intTemp + (LONG)FL2FXCONST_SGL(0.5f/32.0f); 7802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Convert to right-aligned integer: */ 7822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project intTemp = intTemp >> (FRACT_BITS - 1 /*sign*/ - 5 /* rescale */); 7832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Compare with float calculation */ 7852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDK_ASSERT( intTemp == (int)((hHeaderData->bs_data.noise_bands * FDKlog( (float)k2/kx) / (float)(FDKlog(2.0)))+0.5) ); 7862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if( intTemp==0) 7882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project intTemp=1; 7892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hFreq->nNfb = intTemp; 7912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hFreq->nInvfBands = hFreq->nNfb; 7942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if( hFreq->nNfb > MAX_NOISE_COEFFS ) { 7962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_UNSUPPORTED_CONFIG; 7972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 7982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 7992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* Get noise bands */ 8002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrdecDownSampleLoRes(hFreq->freqBandTableNoise, 8012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hFreq->nNfb, 8022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hFreq->freqBandTable[0], 8032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project nBandsLo); 8042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hFreq->lowSubband = lsb; 8092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hFreq->highSubband = usb; 8102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 8112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return SBRDEC_OK; 8122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 813