Remove FDK-AAC

1 files changed, 0 insertions, 359 deletions

diff --git a/libAACenc/src/band_nrg.cpp b/libAACenc/src/band_nrg.cpp
deleted file mode 100644
index 861f7a8..0000000
--- a/libAACenc/src/band_nrg.cpp
+++ /dev/null
@@ -1,359 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-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
------------------------------------------------------------------------------------------------------------ */
-
-/*****************************  MPEG-4 AAC Encoder  **************************
-
-   Initial author:       M. Werner
-   contents/description: Band/Line energy calculations
-
-******************************************************************************/
-
-#include "band_nrg.h"
-
-
-/*****************************************************************************
-  functionname: FDKaacEnc_CalcSfbMaxScaleSpec
-  description:
-  input:
-  output:
-*****************************************************************************/
-void
-FDKaacEnc_CalcSfbMaxScaleSpec(const FIXP_DBL *RESTRICT mdctSpectrum,
-                              const INT      *RESTRICT bandOffset,
-                              INT            *RESTRICT sfbMaxScaleSpec,
-                              const INT       numBands)
-{
-  INT i,j;
-  FIXP_DBL maxSpc, tmp;
-
-  for(i=0; i<numBands; i++) {
-    maxSpc = (FIXP_DBL)0;
-    for (j=bandOffset[i]; j<bandOffset[i+1]; j++) {
-      tmp = fixp_abs(mdctSpectrum[j]);
-      maxSpc = fixMax(maxSpc, tmp);
-    }
-    sfbMaxScaleSpec[i] = (maxSpc==(FIXP_DBL)0) ? (DFRACT_BITS-2) : CntLeadingZeros(maxSpc)-1;
-    /* CountLeadingBits() is not necessary here since test value is always > 0 */
-  }
-}
-
-/*****************************************************************************
-  functionname: FDKaacEnc_CheckBandEnergyOptim
-  description:
-  input:
-  output:
-*****************************************************************************/
-FIXP_DBL
-FDKaacEnc_CheckBandEnergyOptim(const FIXP_DBL *RESTRICT mdctSpectrum,
-                               INT            *RESTRICT sfbMaxScaleSpec,
-                               const INT      *RESTRICT bandOffset,
-                               const INT       numBands,
-                               FIXP_DBL       *RESTRICT bandEnergy,
-                               FIXP_DBL       *RESTRICT bandEnergyLdData,
-                               INT             minSpecShift)
-{
-  INT i, j, scale, nr = 0;
-  FIXP_DBL maxNrgLd = FL2FXCONST_DBL(-1.0f);
-  FIXP_DBL maxNrg = 0;
-  FIXP_DBL spec;
-
-  for(i=0; i<numBands; i++) {
-    scale = fixMax(0, sfbMaxScaleSpec[i]-4);
-    FIXP_DBL tmp = 0;
-    for (j=bandOffset[i]; j<bandOffset[i+1]; j++){
-       spec = mdctSpectrum[j]<<scale;
-       tmp = fPow2AddDiv2(tmp, spec);
-    }
-    bandEnergy[i] = tmp<<1;
-
-    /* calculate ld of bandNrg, subtract scaling */
-    bandEnergyLdData[i] = CalcLdData(bandEnergy[i]);
-    if (bandEnergyLdData[i] != FL2FXCONST_DBL(-1.0f)) {
-      bandEnergyLdData[i] -= scale*FL2FXCONST_DBL(2.0/64);
-    }
-    /* find index of maxNrg */
-    if (bandEnergyLdData[i] > maxNrgLd) {
-        maxNrgLd = bandEnergyLdData[i];
-        nr = i;
-    }
-  }
-
-  /* return unscaled maxNrg*/
-  scale = fixMax(0,sfbMaxScaleSpec[nr]-4);
-  scale = fixMax(2*(minSpecShift-scale),-(DFRACT_BITS-1));
-
-  maxNrg = scaleValue(bandEnergy[nr], scale);
-
-  return maxNrg;
-}
-
-/*****************************************************************************
-  functionname: FDKaacEnc_CalcBandEnergyOptimLong
-  description:
-  input:
-  output:
-*****************************************************************************/
-INT
-FDKaacEnc_CalcBandEnergyOptimLong(const FIXP_DBL *RESTRICT mdctSpectrum,
-                                  INT            *RESTRICT sfbMaxScaleSpec,
-                                  const INT      *RESTRICT bandOffset,
-                                  const INT       numBands,
-                                  FIXP_DBL       *RESTRICT bandEnergy,
-                                  FIXP_DBL       *RESTRICT bandEnergyLdData)
-{
-  INT i, j, shiftBits = 0;
-  FIXP_DBL maxNrgLd = FL2FXCONST_DBL(0.0f);
-
-  FIXP_DBL spec;
-
-  for(i=0; i<numBands; i++) {
-     INT leadingBits = sfbMaxScaleSpec[i]-4;            /* max sfbWidth = 96 ; 2^7=128 => 7/2 = 4 (spc*spc) */
-     FIXP_DBL tmp = FL2FXCONST_DBL(0.0);
-     /* don't use scaleValue() here, it increases workload quite sufficiently... */
-     if (leadingBits>=0) {
-        for (j=bandOffset[i];j<bandOffset[i+1];j++) {
-           spec = mdctSpectrum[j]<<leadingBits;
-           tmp = fPow2AddDiv2(tmp, spec);
-        }
-     } else {
-        INT shift = -leadingBits;
-        for (j=bandOffset[i];j<bandOffset[i+1];j++){
-           spec = mdctSpectrum[j]>>shift;
-           tmp = fPow2AddDiv2(tmp, spec);
-        }
-     }
-     bandEnergy[i] = tmp<<1;
-  }
-
-  /* calculate ld of bandNrg, subtract scaling */
-  LdDataVector(bandEnergy, bandEnergyLdData, numBands);
-  for(i=numBands; i--!=0; ) {
-      FIXP_DBL scaleDiff = (sfbMaxScaleSpec[i]-4)*FL2FXCONST_DBL(2.0/64);
-
-      bandEnergyLdData[i] = (bandEnergyLdData[i] >= ((FL2FXCONST_DBL(-1.f)>>1) + (scaleDiff>>1)))
-                          ? bandEnergyLdData[i]-scaleDiff : FL2FXCONST_DBL(-1.f);
-      /* find maxNrgLd */
-      maxNrgLd = fixMax(maxNrgLd, bandEnergyLdData[i]);
-  }
-
-  if (maxNrgLd<=(FIXP_DBL)0)
-  {
-     for(i=numBands; i--!=0; )
-     {
-         INT scale = fixMin((sfbMaxScaleSpec[i]-4)<<1,(DFRACT_BITS-1));
-         bandEnergy[i] = scaleValue(bandEnergy[i], -scale);
-     }
-     return 0;
-  }
-  else
-  {  /* scale down NRGs */
-     while (maxNrgLd>FL2FXCONST_DBL(0.0f))
-     {
-        maxNrgLd -=  FL2FXCONST_DBL(2.0/64);
-        shiftBits++;
-     }
-     for(i=numBands; i--!=0; )
-     {
-         INT scale = fixMin( ((sfbMaxScaleSpec[i]-4)+shiftBits)<<1, (DFRACT_BITS-1));
-         bandEnergyLdData[i] -= shiftBits*FL2FXCONST_DBL(2.0/64);
-         bandEnergy[i] = scaleValue(bandEnergy[i], -scale);
-     }
-     return shiftBits;
-  }
-}
-
-
-/*****************************************************************************
-  functionname: FDKaacEnc_CalcBandEnergyOptimShort
-  description:
-  input:
-  output:
-*****************************************************************************/
-void
-FDKaacEnc_CalcBandEnergyOptimShort(const FIXP_DBL *RESTRICT mdctSpectrum,
-                                   INT            *RESTRICT sfbMaxScaleSpec,
-                                   const INT      *RESTRICT bandOffset,
-                                   const INT       numBands,
-                                   FIXP_DBL       *RESTRICT bandEnergy)
-{
-  INT i, j;
-
-  for(i=0; i<numBands; i++)
-  {
-    int leadingBits = sfbMaxScaleSpec[i]-3;            /* max sfbWidth = 36 ; 2^6=64 => 6/2 = 3 (spc*spc) */
-    FIXP_DBL tmp = FL2FXCONST_DBL(0.0);
-    for (j=bandOffset[i];j<bandOffset[i+1];j++)
-    {
-       FIXP_DBL spec = scaleValue(mdctSpectrum[j],leadingBits);
-       tmp = fPow2AddDiv2(tmp, spec);
-    }
-    bandEnergy[i] = tmp;
-  }
-
-  for(i=0; i<numBands; i++)
-  {
-      INT scale = (2*(sfbMaxScaleSpec[i]-3))-1;         /* max sfbWidth = 36 ; 2^6=64 => 6/2 = 3 (spc*spc) */
-      scale = fixMax(fixMin(scale,(DFRACT_BITS-1)),-(DFRACT_BITS-1));
-      bandEnergy[i] = scaleValueSaturate(bandEnergy[i], -scale);
-  }
-}
-
-
-/*****************************************************************************
-  functionname: FDKaacEnc_CalcBandNrgMSOpt
-  description:
-  input:
-  output:
-*****************************************************************************/
-void FDKaacEnc_CalcBandNrgMSOpt(const FIXP_DBL   *RESTRICT mdctSpectrumLeft,
-                                const FIXP_DBL   *RESTRICT mdctSpectrumRight,
-                                INT              *RESTRICT sfbMaxScaleSpecLeft,
-                                INT              *RESTRICT sfbMaxScaleSpecRight,
-                                const INT        *RESTRICT bandOffset,
-                                const INT         numBands,
-                                FIXP_DBL         *RESTRICT bandEnergyMid,
-                                FIXP_DBL         *RESTRICT bandEnergySide,
-                                INT               calcLdData,
-                                FIXP_DBL         *RESTRICT bandEnergyMidLdData,
-                                FIXP_DBL         *RESTRICT bandEnergySideLdData)
-{
-  INT i, j, minScale;
-  FIXP_DBL NrgMid, NrgSide, specm, specs;
-
-  for (i=0; i<numBands; i++) {
-
-    NrgMid = NrgSide = FL2FXCONST_DBL(0.0);
-    minScale = fixMin(sfbMaxScaleSpecLeft[i], sfbMaxScaleSpecRight[i])-4;
-    minScale = fixMax(0, minScale);
-
-    if (minScale > 0) {
-      for (j=bandOffset[i];j<bandOffset[i+1];j++) {
-          FIXP_DBL specL = mdctSpectrumLeft[j]<<(minScale-1);
-          FIXP_DBL specR = mdctSpectrumRight[j]<<(minScale-1);
-          specm = specL + specR;
-          specs = specL - specR;
-          NrgMid = fPow2AddDiv2(NrgMid, specm);
-          NrgSide = fPow2AddDiv2(NrgSide, specs);
-      }
-    } else {
-      for (j=bandOffset[i];j<bandOffset[i+1];j++) {
-          FIXP_DBL specL = mdctSpectrumLeft[j]>>1;
-          FIXP_DBL specR = mdctSpectrumRight[j]>>1;
-          specm = specL + specR;
-          specs = specL - specR;
-          NrgMid = fPow2AddDiv2(NrgMid, specm);
-          NrgSide = fPow2AddDiv2(NrgSide, specs);
-      }
-    }
-    bandEnergyMid[i] = NrgMid<<1;
-    bandEnergySide[i] = NrgSide<<1;
-  }
-
-  if(calcLdData) {
-    LdDataVector(bandEnergyMid, bandEnergyMidLdData, numBands);
-    LdDataVector(bandEnergySide, bandEnergySideLdData, numBands);
-  }
-
-  for (i=0; i<numBands; i++)
-  {
-    INT minScale = fixMin(sfbMaxScaleSpecLeft[i], sfbMaxScaleSpecRight[i]);
-    INT scale = fixMax(0, 2*(minScale-4));
-
-    if (calcLdData)
-    {
-       /* using the minimal scaling of left and right channel can cause very small energies;
-       check ldNrg before subtract scaling multiplication: fract*INT we don't need fMult */
-
-       int minus = scale*FL2FXCONST_DBL(1.0/64);
-
-       if (bandEnergyMidLdData[i] != FL2FXCONST_DBL(-1.0f))
-         bandEnergyMidLdData[i] -= minus;
-
-       if (bandEnergySideLdData[i] != FL2FXCONST_DBL(-1.0f))
-         bandEnergySideLdData[i] -= minus;
-    }
-    scale = fixMin(scale, (DFRACT_BITS-1));
-    bandEnergyMid[i]  >>= scale;
-    bandEnergySide[i] >>= scale;
-  }
-}