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*
862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *   filename: ldfiltbank.c
872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *   project : MPEG-4 Audio Decoder
882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *   contents/description: low delay filterbank
892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project *
902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project\***************************************************************************/
912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "ldfiltbank.h"
932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "aac_rom.h"
962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "dct.h"
972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "FDK_tools_rom.h"
982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#include "mdct.h"
992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#define LDFB_HEADROOM 2
1012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectstatic void multE2_DinvF_fdk(INT_PCM *output, FIXP_DBL* x, const FIXP_WTB* fb, FIXP_DBL* z, const int N, const int  stride)
1032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project{
1042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  int i, scale;
1052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  /*  scale for FIXP_DBL -> INT_PCM conversion. */
1072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  scale = (DFRACT_BITS - SAMPLE_BITS) - LDFB_HEADROOM;
1082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1092228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  for(i=0;i<N/4;i++)
1102228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  {
1112228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    FIXP_DBL z0, z2, tmp;
1122228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1132228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    z2 = x[N/2+i];
1142228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    z0 = z2 + ( fMultDiv2(z[N/2+i], fb[2*N + i]) >> (-WTS2-1) );
1152228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1162228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    z[N/2+i] = x[N/2-1-i] + ( fMultDiv2(z[N + i], fb[2*N + N/2 + i]) >> (-WTS2-1) );
1172228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1182228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    tmp = ( fMultDiv2(z[N/2+i], fb[N+N/2-1-i]) + fMultDiv2(z[i], fb[N+N/2+i]) ) ;
1192228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1202228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if (SAMPLE_BITS <= 16)
1212228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    FDK_ASSERT( (-WTS1-1 + scale) >= 0);
1222228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    output[(N*3/4-1-i)*stride] = (INT_PCM)SATURATE_RIGHT_SHIFT(tmp, -WTS1-1 + scale, SAMPLE_BITS);
1232228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#else
1242228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    FDK_ASSERT( (WTS1+1 - scale) >= 0);
1252228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    output[(N*3/4-1-i)*stride] = (INT_PCM)SATURATE_LEFT_SHIFT(tmp, WTS1+1 - scale, SAMPLE_BITS);
1262228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif
1272228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1282228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    z[i] = z0;
1292228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    z[N + i] = z2;
1302228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  }
1312228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1322228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  for(i=N/4;i<N/2;i++)
1332228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  {
1342228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    FIXP_DBL z0, z2, tmp0, tmp1;
1352228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1362228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    z2 = x[N/2+i];
1372228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    z0 = z2 + ( fMultDiv2(z[N/2+i], fb[2*N + i]) >> (-WTS2-1) );
1382228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1392228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    z[N/2+i] = x[N/2-1-i] + ( fMultDiv2(z[N + i], fb[2*N + N/2 + i]) >> (-WTS2-1) );
1402228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1412228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    tmp0 = ( fMultDiv2(z[N/2+i], fb[N/2-1-i])   + fMultDiv2(z[i], fb[N/2+i])   ) ;
1422228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    tmp1 = ( fMultDiv2(z[N/2+i], fb[N+N/2-1-i]) + fMultDiv2(z[i], fb[N+N/2+i]) ) ;
1432228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1442228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if (SAMPLE_BITS <= 16)
1452228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    FDK_ASSERT( (-WTS0-1 + scale) >= 0);
1462228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    output[(i-N/4)*stride]     = (INT_PCM)SATURATE_RIGHT_SHIFT(tmp0, -WTS0-1 + scale, SAMPLE_BITS);
1472228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    output[(N*3/4-1-i)*stride] = (INT_PCM)SATURATE_RIGHT_SHIFT(tmp1, -WTS1-1 + scale, SAMPLE_BITS);
1482228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#else
1492228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    FDK_ASSERT( (WTS0+1 - scale) >= 0);
1502228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    output[(i-N/4)*stride]     = (INT_PCM)SATURATE_LEFT_SHIFT(tmp0, WTS0+1 - scale, SAMPLE_BITS);
1512228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    output[(N*3/4-1-i)*stride] = (INT_PCM)SATURATE_LEFT_SHIFT(tmp1, WTS1+1 - scale, SAMPLE_BITS);
1522228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif
1532228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    z[i] = z0;
1542228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    z[N + i] = z2;
1552228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  }
1562228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1572228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  /* Exchange quarter parts of x to bring them in the "right" order */
1582228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  for(i=0;i<N/4;i++)
1592228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  {
1602228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    FIXP_DBL tmp0 = fMultDiv2(z[i], fb[N/2+i]);
1612228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1622228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#if (SAMPLE_BITS <= 16)
1632228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    FDK_ASSERT( (-WTS0-1 + scale) >= 0);
1642228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    output[(N*3/4 + i)*stride] = (INT_PCM)SATURATE_RIGHT_SHIFT(tmp0, -WTS0-1 + scale, SAMPLE_BITS);
1652228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#else
1662228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    FDK_ASSERT( (WTS0+1 - scale) >= 0);
1672228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    output[(N*3/4 + i)*stride] = (INT_PCM)SATURATE_LEFT_SHIFT(tmp0, WTS0+1 - scale, SAMPLE_BITS);
1682228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project#endif
1692228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  }
1702228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}
1712228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1722228e360595641dd906bf1773307f43d304f5b2The Android Open Source Projectint InvMdctTransformLowDelay_fdk (FIXP_DBL *mdctData, const int mdctData_e, INT_PCM *output, FIXP_DBL *fs_buffer, const int stride, const int N) {
1732228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1742228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  const FIXP_WTB *coef;
1752228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  FIXP_DBL gain = (FIXP_DBL)0;
1762228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  int scale = mdctData_e + MDCT_OUT_HEADROOM - LDFB_HEADROOM; /* The LDFB_HEADROOM is compensated inside multE2_DinvF_fdk() below */
1772228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1782228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  /* Select LD window slope */
1792228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  if (N == 512)
1802228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    coef = (FIXP_WTB*)LowDelaySynthesis512;
1812228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  else
1822228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    coef = (FIXP_WTB*)LowDelaySynthesis480;
1832228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1842228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  /*
1852228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project     Apply exponent and 1/N factor.
1862228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project     Note: "scale" is off by one because for LD_MDCT the window length is twice
1872228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project     the window length of a regular MDCT. This is corrected inside multE2_DinvF_fdk().
1882228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project     Refer to ISO/IEC 14496-3:2009 page 277, chapter 4.6.20.2 "Low Delay Window".
1892228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project   */
1902228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  imdct_gain(&gain, &scale, N);
1912228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1922228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  dct_IV(mdctData, N, &scale);
1932228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
1942228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  if (gain != (FIXP_DBL)0) {
1952228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    scaleValuesWithFactor(mdctData, gain, N, scale);
1962228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  } else {
1972228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project    scaleValues(mdctData, N, scale);
1982228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  }
1992228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
2002228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  /* Since all exponent and factors have been applied, current exponent is zero. */
2012228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  multE2_DinvF_fdk(output, mdctData, coef, fs_buffer, N, stride);
2022228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
2032228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project  return (1);
2042228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project}
2052228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
2062228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
2072228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
2082228e360595641dd906bf1773307f43d304f5b2The Android Open Source Project
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