12228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 22228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* ----------------------------------------------------------------------------------------------------------- 32228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectSoftware License for The Fraunhofer FDK AAC Codec Library for Android 42228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 54f0d97057c5c640b25518358886f8c47da9fc052Jean-Michel Trivi� Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur F�rderung der angewandten Forschung e.V. 62228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project All rights reserved. 72228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 82228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1. INTRODUCTION 92228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 112228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is intended to be used on a wide variety of Android devices. 122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 132228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectaudio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindependent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof the MPEG specifications. 172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 182228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectPatent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmay be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectindividually for the purpose of encoding or decoding bit streams in products that are compliant with 212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthe ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectthese patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware may already be covered under those patent licenses when it is used for those licensed purposes only. 242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 252228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCommercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectare also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectapplications information and documentation. 282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project2. COPYRIGHT LICENSE 302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 312228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectRedistribution and use in source and binary forms, with or without modification, are permitted without 322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectpayment of copyright license fees provided that you satisfy the following conditions: 332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 342228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in redistributions of the FDK AAC Codec or 352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectyour modifications thereto in source code form. 362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 372228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must retain the complete text of this software license in the documentation and/or other materials 382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprovided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 392228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou must make available free of charge copies of the complete source code of the FDK AAC Codec and your 402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectmodifications thereto to recipients of copies in binary form. 412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 422228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThe name of Fraunhofer may not be used to endorse or promote products derived from this library without 432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectprior written permission. 442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 452228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectsoftware or your modifications thereto. 472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 482228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYour modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectand the date of any change. For modified versions of the FDK AAC Codec, the term 502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term 512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." 522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project3. NO PATENT LICENSE 542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 552228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectNO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 562228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectrespect to this software. 582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 592228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectYou may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectby appropriate patent licenses. 612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project4. DISCLAIMER 632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 642228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectThis FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors 652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties 662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectof merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 672228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectCONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectincluding but not limited to procurement of substitute goods or services; loss of use, data, or profits, 692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projector business interruption, however caused and on any theory of liability, whether in contract, strict 702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectliability, or tort (including negligence), arising in any way out of the use of this software, even if 712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectadvised of the possibility of such damage. 722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project5. CONTACT INFORMATION 742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 752228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectFraunhofer Institute for Integrated Circuits IIS 762228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAttention: Audio and Multimedia Departments - FDK AAC LL 772228e360595641dd906bf1773307f43d304f5b2The Android Open Source ProjectAm Wolfsmantel 33 782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project91058 Erlangen, Germany 792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectwww.iis.fraunhofer.de/amm 812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectamm-info@iis.fraunhofer.de 822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project----------------------------------------------------------------------------------------------------------- */ 832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/***************************** MPEG-4 AAC Decoder ************************** 852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Author(s): Christian Griebel 872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project Description: Dynamic range control (DRC) decoder tool for SBR 882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project******************************************************************************/ 902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "sbrdec_drc.h" 922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/* DRC - Offset table for QMF interpolation. */ 952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic const int offsetTab[2][16] = 962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 0, 4, 8, 12, 16, 20, 24, 28, 0, 0, 0, 0, 0, 0, 0, 0 }, /* 1024 framing */ 982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 0, 4, 8, 12, 16, 19, 22, 26, 0, 0, 0, 0, 0, 0, 0, 0 } /* 960 framing */ 992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}; 1002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 1022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Initialize DRC QMF factors 1032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \hDrcData Handle to DRC channel data. 1052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return none 1072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 1082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid sbrDecoder_drcInitChannel ( 1092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_DRC_CHANNEL hDrcData ) 1102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int band; 1122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData == NULL) { 1142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 1152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (band = 0; band < (64); band++) { 1186ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi hDrcData->prevFact_mag[band] = FL2FXCONST_DBL(0.5f); 1192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (band = 0; band < SBRDEC_MAX_DRC_BANDS; band++) { 1226ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi hDrcData->currFact_mag[band] = FL2FXCONST_DBL(0.5f); 1236ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi hDrcData->nextFact_mag[band] = FL2FXCONST_DBL(0.5f); 1242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1266ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi hDrcData->prevFact_exp = 1; 1276ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi hDrcData->currFact_exp = 1; 1286ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi hDrcData->nextFact_exp = 1; 1292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 130b9774f90651be61065ae40171fc321f6ced60e49Jean-Michel Trivi hDrcData->numBandsCurr = 1; 131b9774f90651be61065ae40171fc321f6ced60e49Jean-Michel Trivi hDrcData->numBandsNext = 1; 1322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->winSequenceCurr = 0; 1342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->winSequenceNext = 0; 1352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->drcInterpolationSchemeCurr = 0; 1372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->drcInterpolationSchemeNext = 0; 1382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->enable = 0; 1402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 1442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Swap DRC QMF scaling factors after they have been applied. 1452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \hDrcData Handle to DRC channel data. 1472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return none 1492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 1502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid sbrDecoder_drcUpdateChannel ( 1512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_DRC_CHANNEL hDrcData ) 1522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 1532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData == NULL) { 1542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 1552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->enable != 1) { 1572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 1582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 1592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* swap previous data */ 1612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy( hDrcData->currFact_mag, 1622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->nextFact_mag, 1632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SBRDEC_MAX_DRC_BANDS * sizeof(FIXP_DBL) ); 1642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->currFact_exp = hDrcData->nextFact_exp; 1662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->numBandsCurr = hDrcData->numBandsNext; 1682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FDKmemcpy( hDrcData->bandTopCurr, 1702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->bandTopNext, 1712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project SBRDEC_MAX_DRC_BANDS * sizeof(USHORT) ); 1722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->drcInterpolationSchemeCurr = hDrcData->drcInterpolationSchemeNext; 1742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->winSequenceCurr = hDrcData->winSequenceNext; 1762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 1772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 1802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Apply DRC factors slot based. 1812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \hDrcData Handle to DRC channel data. 1832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \qmfRealSlot Pointer to real valued QMF data of one time slot. 1842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \qmfImagSlot Pointer to the imaginary QMF data of one time slot. 1852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \col Number of the time slot. 1862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \numQmfSubSamples Total number of time slots for one frame. 1872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \scaleFactor Pointer to the out scale factor of the time slot. 1882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 1892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return None. 1902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 1912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid sbrDecoder_drcApplySlot ( 1922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_DRC_CHANNEL hDrcData, 1932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *qmfRealSlot, 1942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *qmfImagSlot, 1952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int col, 1962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int numQmfSubSamples, 1972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int maxShift 1982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 1992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 2002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const int *offset; 2012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int band, bottomMdct, topMdct, bin, useLP; 2032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int indx = numQmfSubSamples - (numQmfSubSamples >> 1) - 10; /* l_border */ 2042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int frameLenFlag = (numQmfSubSamples == 30) ? 1 : 0; 2052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project const FIXP_DBL *fact_mag = NULL; 2072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT fact_exp = 0; 2082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project UINT numBands = 0; 2092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project USHORT *bandTop = NULL; 2102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int shortDrc = 0; 2112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL alphaValue = FL2FXCONST_DBL(0.0f); 2132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData == NULL) { 2152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 2162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->enable != 1) { 2182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project return; 2192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project offset = offsetTab[frameLenFlag]; 2222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project useLP = (qmfImagSlot == NULL) ? 1 : 0; 2242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project col += indx; 2262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bottomMdct = 0; 2272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bin = 0; 2282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* get respective data and calc interpolation factor */ 2302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (col < (numQmfSubSamples>>1)) { /* first half of current frame */ 2312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->winSequenceCurr != 2) { /* long window */ 2322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int j = col + (numQmfSubSamples>>1); 2332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->drcInterpolationSchemeCurr == 0) { 2352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k = (frameLenFlag) ? 0x4444444 : 0x4000000; 2362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project alphaValue = (FIXP_DBL)(j * k); 2382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 2402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (j >= offset[hDrcData->drcInterpolationSchemeCurr - 1]) { 2416ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi alphaValue = (FIXP_DBL)MAXVAL_DBL; 2422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { /* short windows */ 2462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project shortDrc = 1; 2472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project fact_mag = hDrcData->currFact_mag; 2502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project fact_exp = hDrcData->currFact_exp; 2512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project numBands = hDrcData->numBandsCurr; 2522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bandTop = hDrcData->bandTopCurr; 2532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else if (col < numQmfSubSamples) { /* second half of current frame */ 2552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->winSequenceNext != 2) { /* next: long window */ 2562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int j = col - (numQmfSubSamples>>1); 2572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->drcInterpolationSchemeNext == 0) { 2592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k = (frameLenFlag) ? 0x4444444 : 0x4000000; 2602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project alphaValue = (FIXP_DBL)(j * k); 2622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 2642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (j >= offset[hDrcData->drcInterpolationSchemeNext - 1]) { 2656ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi alphaValue = (FIXP_DBL)MAXVAL_DBL; 2662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project fact_mag = hDrcData->nextFact_mag; 2702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project fact_exp = hDrcData->nextFact_exp; 2712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project numBands = hDrcData->numBandsNext; 2722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bandTop = hDrcData->bandTopNext; 2732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { /* next: short windows */ 2752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->winSequenceCurr != 2) { /* current: long window */ 2762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project alphaValue = (FIXP_DBL)0; 2772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project fact_mag = hDrcData->nextFact_mag; 2792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project fact_exp = hDrcData->nextFact_exp; 2802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project numBands = hDrcData->numBandsNext; 2812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bandTop = hDrcData->bandTopNext; 2822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { /* current: short windows */ 2842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project shortDrc = 1; 2852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project fact_mag = hDrcData->currFact_mag; 2872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project fact_exp = hDrcData->currFact_exp; 2882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project numBands = hDrcData->numBandsCurr; 2892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bandTop = hDrcData->bandTopCurr; 2902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 2932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { /* first half of next frame */ 2942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->winSequenceNext != 2) { /* long window */ 2952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int j = col - (numQmfSubSamples>>1); 2962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 2972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->drcInterpolationSchemeNext == 0) { 2982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project INT k = (frameLenFlag) ? 0x4444444 : 0x4000000; 2992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project alphaValue = (FIXP_DBL)(j * k); 3012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 3032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (j >= offset[hDrcData->drcInterpolationSchemeNext - 1]) { 3046ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi alphaValue = (FIXP_DBL)MAXVAL_DBL; 3052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { /* short windows */ 3092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project shortDrc = 1; 3102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project fact_mag = hDrcData->nextFact_mag; 3132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project fact_exp = hDrcData->nextFact_exp; 3142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project numBands = hDrcData->numBandsNext; 3152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bandTop = hDrcData->bandTopNext; 3162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project col -= numQmfSubSamples; 3182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* process bands */ 3222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (band = 0; band < (int)numBands; band++) { 3232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int bottomQmf, topQmf; 3242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3256ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi FIXP_DBL drcFact_mag = (FIXP_DBL)MAXVAL_DBL; 3262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topMdct = (bandTop[band]+1) << 2; 3282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (!shortDrc) { /* long window */ 3302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (frameLenFlag) { 3312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 960 framing */ 3322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bottomMdct = 30 * (bottomMdct / 30); 3332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topMdct = 30 * (topMdct / 30); 3342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bottomQmf = fMultIfloor((FIXP_DBL)0x4444444, bottomMdct); 3362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topQmf = fMultIfloor((FIXP_DBL)0x4444444, topMdct); 3372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 3392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 1024 framing */ 3402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bottomMdct &= ~0x1f; 3412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topMdct &= ~0x1f; 3422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bottomQmf = bottomMdct >> 5; 3442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topQmf = topMdct >> 5; 3452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (band == ((int)numBands-1)) { 3482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topQmf = (64); 3492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (bin = bottomQmf; bin < topQmf; bin++) { 3522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL drcFact1_mag = hDrcData->prevFact_mag[bin]; 3532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL drcFact2_mag = fact_mag[band]; 3542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* normalize scale factors */ 3562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->prevFact_exp < maxShift) { 3572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project drcFact1_mag >>= maxShift - hDrcData->prevFact_exp; 3582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (fact_exp < maxShift) { 3602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project drcFact2_mag >>= maxShift - fact_exp; 3612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* interpolate */ 3646ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi if (alphaValue == (FIXP_DBL)0) { 3656ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi drcFact_mag = drcFact1_mag; 3666ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi } else if (alphaValue == (FIXP_DBL)MAXVAL_DBL) { 3676ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi drcFact_mag = drcFact2_mag; 3686ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi } else { 3696ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi drcFact_mag = fMult(alphaValue, drcFact2_mag) + fMult(((FIXP_DBL)MAXVAL_DBL - alphaValue), drcFact1_mag); 3706ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi } 3712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* apply scaling */ 3732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfRealSlot[bin] = fMult(qmfRealSlot[bin], drcFact_mag); 3742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (!useLP) { 3752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfImagSlot[bin] = fMult(qmfImagSlot[bin], drcFact_mag); 3762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* save previous factors */ 3792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (col == (numQmfSubSamples>>1)-1) { 3802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->prevFact_mag[bin] = fact_mag[band]; 3812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { /* short windows */ 3852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int startSample, stopSample; 3862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL invFrameSizeDiv8 = (frameLenFlag) ? (FIXP_DBL)0x1111111 : (FIXP_DBL)0x1000000; 3872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (frameLenFlag) { 3892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 960 framing */ 3902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bottomMdct = 30/8 * (bottomMdct*8/30); 3912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topMdct = 30/8 * (topMdct*8/30); 3922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project else { 3942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* 1024 framing */ 3952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bottomMdct &= ~0x03; 3962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topMdct &= ~0x03; 3972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 3982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 3992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* startSample is truncated to the nearest corresponding start subsample in 4002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project the QMF of the short window bottom is present in:*/ 4012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project startSample = ((fMultIfloor( invFrameSizeDiv8, bottomMdct ) & 0x7) * numQmfSubSamples) >> 3; 4022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* stopSample is rounded upwards to the nearest corresponding stop subsample 4042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project in the QMF of the short window top is present in. */ 4052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopSample = ((fMultIceil( invFrameSizeDiv8, topMdct ) & 0xf) * numQmfSubSamples) >> 3; 4062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bottomQmf = fMultIfloor( invFrameSizeDiv8, ((bottomMdct%(numQmfSubSamples<<2)) << 5) ); 4082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topQmf = fMultIfloor( invFrameSizeDiv8, ((topMdct%(numQmfSubSamples<<2)) << 5) ); 4092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* extend last band */ 4112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (band == ((int)numBands-1)) { 4122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topQmf = (64); 4132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project stopSample = numQmfSubSamples; 4142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (topQmf == 0) { 4172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topQmf = (64); 4182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* save previous factors */ 4212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (stopSample == numQmfSubSamples) { 4222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int tmpBottom = bottomQmf; 4232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (((numQmfSubSamples-1) & ~0x03) > startSample) { 4252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project tmpBottom = 0; /* band starts in previous short window */ 4262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (bin = tmpBottom; bin < topQmf; bin++) { 4292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->prevFact_mag[bin] = fact_mag[band]; 4302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* apply */ 4342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((col >= startSample) && (col < stopSample)) { 4352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if ((col & ~0x03) > startSample) { 4362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bottomQmf = 0; /* band starts in previous short window */ 4372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (col < ((stopSample-1) & ~0x03)) { 4392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project topQmf = (64); /* band ends in next short window */ 4402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project drcFact_mag = fact_mag[band]; 4432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* normalize scale factor */ 4452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (fact_exp < maxShift) { 4462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project drcFact_mag >>= maxShift - fact_exp; 4472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* apply scaling */ 4502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (bin = bottomQmf; bin < topQmf; bin++) { 4512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfRealSlot[bin] = fMult(qmfRealSlot[bin], drcFact_mag); 4522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (!useLP) { 4532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfImagSlot[bin] = fMult(qmfImagSlot[bin], drcFact_mag); 4542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project bottomMdct = topMdct; 4602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } /* end of bands loop */ 4612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (col == (numQmfSubSamples>>1)-1) { 4632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData->prevFact_exp = fact_exp; 4642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 4652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 4662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project/*! 4692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \brief Apply DRC factors frame based. 4702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \hDrcData Handle to DRC channel data. 4722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \qmfRealSlot Pointer to real valued QMF data of the whole frame. 4732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \qmfImagSlot Pointer to the imaginary QMF data of the whole frame. 4742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \numQmfSubSamples Total number of time slots for one frame. 4752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \scaleFactor Pointer to the out scale factor of the frame. 4762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project \return None. 4782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project*/ 4792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectvoid sbrDecoder_drcApply ( 4802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project HANDLE_SBR_DRC_CHANNEL hDrcData, 4812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL **QmfBufferReal, 4822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL **QmfBufferImag, 4832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int numQmfSubSamples, 4842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int *scaleFactor 4852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ) 4862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{ 4872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int col; 4882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project int maxShift = 0; 4892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 4906ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi if (hDrcData == NULL) { 4916ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi return; 4926ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi } 493b9774f90651be61065ae40171fc321f6ced60e49Jean-Michel Trivi if (hDrcData->enable == 0) { 4946ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi return; /* Avoid changing the scaleFactor even though the processing is disabled. */ 4956ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi } 4966ab36997af5d5acda4f21d33031f4e45c85f96b7Jean-Michel Trivi 4972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project /* get max scale factor */ 4982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->prevFact_exp > maxShift) { 4992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxShift = hDrcData->prevFact_exp; 5002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->currFact_exp > maxShift) { 5022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxShift = hDrcData->currFact_exp; 5032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project if (hDrcData->nextFact_exp > maxShift) { 5052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxShift = hDrcData->nextFact_exp; 5062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project for (col = 0; col < numQmfSubSamples; col++) 5092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project { 5102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *qmfSlotReal = QmfBufferReal[col]; 5112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project FIXP_DBL *qmfSlotImag = (QmfBufferImag == NULL) ? NULL : QmfBufferImag[col]; 5122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project sbrDecoder_drcApplySlot ( 5142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project hDrcData, 5152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfSlotReal, 5162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project qmfSlotImag, 5172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project col, 5182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project numQmfSubSamples, 5192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project maxShift 5202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project ); 5212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project } 5222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 5232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *scaleFactor += maxShift; 5242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project} 5252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project 526