Remove FDK-AAC

1 files changed, 0 insertions, 278 deletions

diff --git a/libFDK/src/autocorr2nd.cpp b/libFDK/src/autocorr2nd.cpp
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--- a/libFDK/src/autocorr2nd.cpp
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-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright  1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
-  All rights reserved.
-
- 1.    INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2.    COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3.    NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4.    DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5.    CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/***************************  Fraunhofer IIS FDK Tools  ***********************
-
-   Author(s):   M. Lohwasser
-   Description: auto-correlation functions
-
-******************************************************************************/
-
-#include "autocorr2nd.h"
-
-
-
-/*  If the accumulator does not provide enough overflow bits,
-    products have to be shifted down in the autocorrelation below. */
-#define SHIFT_FACTOR (5)
-#define SHIFT >> (SHIFT_FACTOR)
-
-
-#if defined(__CC_ARM) || defined(__arm__)
-#include "arm/autocorr2nd.cpp"
-#endif
-
-
-/*!
- *
- * \brief Calculate second order autocorrelation using 2 accumulators
- *
- */
-#if !defined(FUNCTION_autoCorr2nd_real)
-INT
-autoCorr2nd_real (ACORR_COEFS *ac,          /*!< Pointer to autocorrelation coeffs */
-                  const FIXP_DBL *reBuffer, /*!< Pointer to to real part of input samples */
-                  const int len             /*!< Number input samples */
-                 )
-{
-  int   j, autoCorrScaling, mScale;
-
-  FIXP_DBL accu1, accu2, accu3, accu4, accu5;
-
-  const FIXP_DBL *pReBuf;
-
-  const FIXP_DBL *realBuf = reBuffer;
-
-  /*
-    r11r,r22r
-    r01r,r12r
-    r02r
-  */
-  pReBuf = realBuf-2;
-  accu5 = ( (fMultDiv2(pReBuf[0], pReBuf[2]) +
-             fMultDiv2(pReBuf[1], pReBuf[3])) SHIFT);
-  pReBuf++;
-
-  //len must be even
-  accu1 = fPow2Div2(pReBuf[0]) SHIFT;
-  accu3 = fMultDiv2(pReBuf[0], pReBuf[1]) SHIFT;
-  pReBuf++;
-
-  for ( j = (len - 2)>>1; j != 0; j--,pReBuf+=2 ) {
-
-    accu1 += ( (fPow2Div2(pReBuf[0]) +
-                fPow2Div2(pReBuf[1])) SHIFT);
-
-    accu3 += ( (fMultDiv2(pReBuf[0], pReBuf[1]) +
-                fMultDiv2(pReBuf[1], pReBuf[2])) SHIFT);
-
-    accu5 += ( (fMultDiv2(pReBuf[0], pReBuf[2]) +
-                fMultDiv2(pReBuf[1], pReBuf[3])) SHIFT);
-
-  }
-
-  accu2 = (fPow2Div2(realBuf[-2]) SHIFT);
-  accu2 += accu1;
-
-  accu1 += (fPow2Div2(realBuf[len - 2]) SHIFT);
-
-  accu4  = (fMultDiv2(realBuf[-1],realBuf[-2]) SHIFT);
-  accu4 += accu3;
-
-  accu3 += (fMultDiv2(realBuf[len - 1],realBuf[len - 2]) SHIFT);
-
-  mScale = CntLeadingZeros( (accu1 | accu2 | fAbs(accu3) | fAbs(accu4) | fAbs(accu5)) ) - 1;
-  autoCorrScaling = mScale - 1 - SHIFT_FACTOR; /* -1 because of fMultDiv2*/
-
-  /* Scale to common scale factor */
-  ac->r11r = accu1 << mScale;
-  ac->r22r = accu2 << mScale;
-  ac->r01r = accu3 << mScale;
-  ac->r12r = accu4 << mScale;
-  ac->r02r = accu5 << mScale;
-
-  ac->det = (fMultDiv2(ac->r11r,ac->r22r) - fMultDiv2(ac->r12r,ac->r12r)) ;
-  mScale  = CountLeadingBits(fAbs(ac->det));
-
-  ac->det     <<= mScale;
-  ac->det_scale = mScale - 1;
-
-  return autoCorrScaling;
-}
-#endif
-
-#ifndef LOW_POWER_SBR_ONLY
-#if !defined(FUNCTION_autoCorr2nd_cplx)
-INT
-autoCorr2nd_cplx (ACORR_COEFS *ac,           /*!< Pointer to autocorrelation coeffs */
-                  const FIXP_DBL *reBuffer,  /*!< Pointer to real part of input samples */
-                  const FIXP_DBL *imBuffer,  /*!< Pointer to imag part of input samples */
-                  const int len              /*!< Number of input samples */
-                 )
-{
-
-  int   j, autoCorrScaling, mScale, len_scale;
-
-  FIXP_DBL accu0, accu1,accu2, accu3, accu4, accu5, accu6, accu7, accu8;
-
-  const FIXP_DBL *pReBuf, *pImBuf;
-
-  const FIXP_DBL *realBuf = reBuffer;
-  const FIXP_DBL *imagBuf = imBuffer;
-
-  (len>64) ? (len_scale = 6) : (len_scale = 5);
-  /*
-    r00r,
-    r11r,r22r
-    r01r,r12r
-    r01i,r12i
-    r02r,r02i
-  */
-  accu1 = accu3 = accu5 = accu7 = accu8 = FL2FXCONST_DBL(0.0f);
-
-  pReBuf  = realBuf-2, pImBuf  = imagBuf-2;
-  accu7 += ( (fMultDiv2(pReBuf[2], pReBuf[0]) + fMultDiv2(pImBuf[2], pImBuf[0])) >> len_scale);
-  accu8 += ( (fMultDiv2(pImBuf[2], pReBuf[0]) - fMultDiv2(pReBuf[2], pImBuf[0])) >> len_scale);
-
-  pReBuf = realBuf-1, pImBuf = imagBuf-1;
-  for ( j = (len - 1); j != 0; j--,pReBuf++,pImBuf++ ){
-    accu1 += ( (fPow2Div2(pReBuf[0]           ) + fPow2Div2(pImBuf[0]           )) >> len_scale);
-    accu3 += ( (fMultDiv2(pReBuf[0], pReBuf[1]) + fMultDiv2(pImBuf[0], pImBuf[1])) >> len_scale);
-    accu5 += ( (fMultDiv2(pImBuf[1], pReBuf[0]) - fMultDiv2(pReBuf[1], pImBuf[0])) >> len_scale);
-    accu7 += ( (fMultDiv2(pReBuf[2], pReBuf[0]) + fMultDiv2(pImBuf[2], pImBuf[0])) >> len_scale);
-    accu8 += ( (fMultDiv2(pImBuf[2], pReBuf[0]) - fMultDiv2(pReBuf[2], pImBuf[0])) >> len_scale);
-  }
-
-  accu2 = ( (fPow2Div2(realBuf[-2]) + fPow2Div2(imagBuf[-2])) >> len_scale);
-  accu2 += accu1;
-
-  accu1 += ( (fPow2Div2(realBuf[len-2]) +
-              fPow2Div2(imagBuf[len-2])) >> len_scale);
-  accu0 = ( (fPow2Div2(realBuf[len-1]) +
-             fPow2Div2(imagBuf[len-1])) >> len_scale) -
-          ( (fPow2Div2(realBuf[-1]) +
-             fPow2Div2(imagBuf[-1])) >> len_scale);
-  accu0 += accu1;
-
-  accu4 = ( (fMultDiv2(realBuf[-1], realBuf[-2]) +
-             fMultDiv2(imagBuf[-1], imagBuf[-2])) >> len_scale);
-  accu4 += accu3;
-
-  accu3 += ( (fMultDiv2(realBuf[len-1], realBuf[len-2]) +
-              fMultDiv2(imagBuf[len-1], imagBuf[len-2])) >> len_scale);
-
-  accu6 = ( (fMultDiv2(imagBuf[-1], realBuf[-2]) -
-             fMultDiv2(realBuf[-1], imagBuf[-2])) >> len_scale);
-  accu6 += accu5;
-
-  accu5 += ( (fMultDiv2(imagBuf[len - 1], realBuf[len - 2]) -
-              fMultDiv2(realBuf[len - 1], imagBuf[len - 2])) >> len_scale);
-
-  mScale = CntLeadingZeros( (accu0 | accu1 | accu2 | fAbs(accu3) | fAbs(accu4) | fAbs(accu5) |
-                             fAbs(accu6) | fAbs(accu7) | fAbs(accu8)) ) - 1;
-  autoCorrScaling = mScale - 1 - len_scale; /* -1 because of fMultDiv2*/
-
-  /* Scale to common scale factor */
-  ac->r00r = (FIXP_DBL)accu0 << mScale;
-  ac->r11r = (FIXP_DBL)accu1 << mScale;
-  ac->r22r = (FIXP_DBL)accu2 << mScale;
-  ac->r01r = (FIXP_DBL)accu3 << mScale;
-  ac->r12r = (FIXP_DBL)accu4 << mScale;
-  ac->r01i = (FIXP_DBL)accu5 << mScale;
-  ac->r12i = (FIXP_DBL)accu6 << mScale;
-  ac->r02r = (FIXP_DBL)accu7 << mScale;
-  ac->r02i = (FIXP_DBL)accu8 << mScale;
-
-  ac->det = ( fMultDiv2(ac->r11r,ac->r22r) >> 1 ) -
-            ( (fMultDiv2(ac->r12r,ac->r12r) + fMultDiv2(ac->r12i,ac->r12i)) >> 1 );
-  mScale = CountLeadingBits(fAbs(ac->det));
-
-  ac->det <<= mScale;
-  ac->det_scale = mScale - 2;
-
-  return autoCorrScaling;
-}
-#endif /* FUNCTION_autoCorr2nd_cplx */
-#endif /* LOW_POWER_SBR_ONLY */
-
-