Remove FDK-AAC

1 files changed, 0 insertions, 525 deletions

diff --git a/libSBRdec/src/sbrdec_drc.cpp b/libSBRdec/src/sbrdec_drc.cpp
deleted file mode 100644
index a834c0b..0000000
--- a/libSBRdec/src/sbrdec_drc.cpp
+++ /dev/null
@@ -1,525 +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 Decoder  **************************
-
-   Author(s):   Christian Griebel
-   Description: Dynamic range control (DRC) decoder tool for SBR
-
-******************************************************************************/
-
-#include "sbrdec_drc.h"
-
-
-/* DRC - Offset table for QMF interpolation. */
-static const int offsetTab[2][16] =
-{
-  { 0, 4, 8, 12, 16, 20, 24, 28, 0, 0, 0, 0, 0, 0, 0, 0 },  /* 1024 framing */
-  { 0, 4, 8, 12, 16, 19, 22, 26, 0, 0, 0, 0, 0, 0, 0, 0 }   /*  960 framing */
-};
-
-/*!
-  \brief Initialize DRC QMF factors
-
-  \hDrcData Handle to DRC channel data.
-
-  \return none
-*/
-void sbrDecoder_drcInitChannel (
-    HANDLE_SBR_DRC_CHANNEL  hDrcData )
-{
-  int band;
-
-  if (hDrcData == NULL) {
-    return;
-  }
-
-  for (band = 0; band < (64); band++) {
-    hDrcData->prevFact_mag[band] = FL2FXCONST_DBL(0.5f);
-  }
-
-  for (band = 0; band < SBRDEC_MAX_DRC_BANDS; band++) {
-    hDrcData->currFact_mag[band] = FL2FXCONST_DBL(0.5f);
-    hDrcData->nextFact_mag[band] = FL2FXCONST_DBL(0.5f);
-  }
-
-  hDrcData->prevFact_exp = 1;
-  hDrcData->currFact_exp = 1;
-  hDrcData->nextFact_exp = 1;
-
-  hDrcData->numBandsCurr = 1;
-  hDrcData->numBandsNext = 1;
-
-  hDrcData->winSequenceCurr = 0;
-  hDrcData->winSequenceNext = 0;
-
-  hDrcData->drcInterpolationSchemeCurr = 0;
-  hDrcData->drcInterpolationSchemeNext = 0;
-
-  hDrcData->enable = 0;
-}
-
-
-/*!
-  \brief Swap DRC QMF scaling factors after they have been applied.
-
-  \hDrcData Handle to DRC channel data.
-
-  \return none
-*/
-void sbrDecoder_drcUpdateChannel (
-    HANDLE_SBR_DRC_CHANNEL  hDrcData )
-{
-  if (hDrcData == NULL) {
-    return;
-  }
-  if (hDrcData->enable != 1) {
-    return;
-  }
-
-  /* swap previous data */
-  FDKmemcpy( hDrcData->currFact_mag,
-             hDrcData->nextFact_mag,
-             SBRDEC_MAX_DRC_BANDS * sizeof(FIXP_DBL) );
-
-  hDrcData->currFact_exp = hDrcData->nextFact_exp;
-
-  hDrcData->numBandsCurr = hDrcData->numBandsNext;
-
-  FDKmemcpy( hDrcData->bandTopCurr,
-             hDrcData->bandTopNext,
-             SBRDEC_MAX_DRC_BANDS * sizeof(USHORT) );
-
-  hDrcData->drcInterpolationSchemeCurr = hDrcData->drcInterpolationSchemeNext;
-
-  hDrcData->winSequenceCurr = hDrcData->winSequenceNext;
-}
-
-
-/*!
-  \brief Apply DRC factors slot based.
-
-  \hDrcData Handle to DRC channel data.
-  \qmfRealSlot Pointer to real valued QMF data of one time slot.
-  \qmfImagSlot Pointer to the imaginary QMF data of one time slot.
-  \col Number of the time slot.
-  \numQmfSubSamples Total number of time slots for one frame.
-  \scaleFactor Pointer to the out scale factor of the time slot.
-
-  \return None.
-*/
-void sbrDecoder_drcApplySlot (
-    HANDLE_SBR_DRC_CHANNEL  hDrcData,
-    FIXP_DBL   *qmfRealSlot,
-    FIXP_DBL   *qmfImagSlot,
-    int  col,
-    int  numQmfSubSamples,
-    int  maxShift
-  )
-{
-  const int *offset;
-
-  int band, bottomMdct, topMdct, bin, useLP;
-  int indx = numQmfSubSamples - (numQmfSubSamples >> 1) - 10;   /* l_border */
-  int frameLenFlag = (numQmfSubSamples == 30) ? 1 : 0;
-
-  const FIXP_DBL *fact_mag = NULL;
-  INT fact_exp = 0;
-  UINT numBands = 0;
-  USHORT *bandTop = NULL;
-  int shortDrc = 0;
-
-  FIXP_DBL alphaValue = FL2FXCONST_DBL(0.0f);
-
-  if (hDrcData == NULL) {
-    return;
-  }
-  if (hDrcData->enable != 1) {
-    return;
-  }
-
-  offset = offsetTab[frameLenFlag];
-
-  useLP = (qmfImagSlot == NULL) ? 1 : 0;
-
-  col += indx;
-  bottomMdct = 0;
-  bin = 0;
-
-  /* get respective data and calc interpolation factor */
-  if (col < (numQmfSubSamples>>1)) {  /* first half of current frame */
-    if (hDrcData->winSequenceCurr != 2) { /* long window */
-      int j = col + (numQmfSubSamples>>1);
-
-      if (hDrcData->drcInterpolationSchemeCurr == 0) {
-        INT k = (frameLenFlag) ? 0x4444444 : 0x4000000;
-
-        alphaValue = (FIXP_DBL)(j * k);
-      }
-      else {
-        if (j >= offset[hDrcData->drcInterpolationSchemeCurr - 1]) {
-          alphaValue = (FIXP_DBL)MAXVAL_DBL;
-        }
-      }
-    }
-    else {  /* short windows */
-      shortDrc = 1;
-    }
-
-    fact_mag = hDrcData->currFact_mag;
-    fact_exp = hDrcData->currFact_exp;
-    numBands = hDrcData->numBandsCurr;
-    bandTop = hDrcData->bandTopCurr;
-  }
-  else if (col < numQmfSubSamples) {  /* second half of current frame */
-    if (hDrcData->winSequenceNext != 2) { /* next: long window */
-      int j = col - (numQmfSubSamples>>1);
-
-      if (hDrcData->drcInterpolationSchemeNext == 0) {
-        INT k = (frameLenFlag) ? 0x4444444 : 0x4000000;
-
-        alphaValue = (FIXP_DBL)(j * k);
-      }
-      else {
-        if (j >= offset[hDrcData->drcInterpolationSchemeNext - 1]) {
-          alphaValue = (FIXP_DBL)MAXVAL_DBL;
-        }
-      }
-
-      fact_mag = hDrcData->nextFact_mag;
-      fact_exp = hDrcData->nextFact_exp;
-      numBands = hDrcData->numBandsNext;
-      bandTop = hDrcData->bandTopNext;
-    }
-    else {  /* next: short windows */
-      if (hDrcData->winSequenceCurr != 2) {  /* current: long window */
-        alphaValue = (FIXP_DBL)0;
-
-        fact_mag = hDrcData->nextFact_mag;
-        fact_exp = hDrcData->nextFact_exp;
-        numBands = hDrcData->numBandsNext;
-        bandTop = hDrcData->bandTopNext;
-      }
-      else {  /* current: short windows */
-        shortDrc = 1;
-
-        fact_mag = hDrcData->currFact_mag;
-        fact_exp = hDrcData->currFact_exp;
-        numBands = hDrcData->numBandsCurr;
-        bandTop = hDrcData->bandTopCurr;
-      }
-    }
-  }
-  else {  /* first half of next frame */
-    if (hDrcData->winSequenceNext != 2) { /* long window */
-      int j = col - (numQmfSubSamples>>1);
-
-      if (hDrcData->drcInterpolationSchemeNext == 0) {
-        INT k = (frameLenFlag) ? 0x4444444 : 0x4000000;
-
-        alphaValue = (FIXP_DBL)(j * k);
-      }
-      else {
-        if (j >= offset[hDrcData->drcInterpolationSchemeNext - 1]) {
-          alphaValue = (FIXP_DBL)MAXVAL_DBL;
-        }
-      }
-    }
-    else {  /* short windows */
-      shortDrc = 1;
-    }
-
-    fact_mag = hDrcData->nextFact_mag;
-    fact_exp = hDrcData->nextFact_exp;
-    numBands = hDrcData->numBandsNext;
-    bandTop = hDrcData->bandTopNext;
-
-    col -= numQmfSubSamples;
-  }
-
-
-  /* process bands */
-  for (band = 0; band < (int)numBands; band++) {
-    int bottomQmf, topQmf;
-
-    FIXP_DBL drcFact_mag = (FIXP_DBL)MAXVAL_DBL;
-
-    topMdct = (bandTop[band]+1) << 2;
-
-    if (!shortDrc) {  /* long window */
-      if (frameLenFlag) {
-        /* 960 framing */
-        bottomMdct = 30 * (bottomMdct / 30);
-        topMdct    = 30 * (topMdct / 30);
-
-        bottomQmf = fMultIfloor((FIXP_DBL)0x4444444, bottomMdct);
-        topQmf    = fMultIfloor((FIXP_DBL)0x4444444, topMdct);
-      }
-      else {
-        /* 1024 framing */
-        bottomMdct &= ~0x1f;
-        topMdct    &= ~0x1f;
-
-        bottomQmf = bottomMdct >> 5;
-        topQmf    = topMdct >> 5;
-      }
-
-      if (band == ((int)numBands-1)) {
-        topQmf = (64);
-      }
-    
-      for (bin = bottomQmf; bin < topQmf; bin++) {
-        FIXP_DBL drcFact1_mag = hDrcData->prevFact_mag[bin];
-        FIXP_DBL drcFact2_mag = fact_mag[band];
-
-        /* normalize scale factors */
-        if (hDrcData->prevFact_exp < maxShift) {
-          drcFact1_mag >>= maxShift - hDrcData->prevFact_exp;
-        }
-        if (fact_exp < maxShift) {
-          drcFact2_mag >>= maxShift - fact_exp;
-        }
-
-        /* interpolate */
-        if (alphaValue == (FIXP_DBL)0) {
-          drcFact_mag = drcFact1_mag;
-        } else if (alphaValue == (FIXP_DBL)MAXVAL_DBL) {
-          drcFact_mag = drcFact2_mag;
-        } else {
-          drcFact_mag = fMult(alphaValue, drcFact2_mag) + fMult(((FIXP_DBL)MAXVAL_DBL - alphaValue), drcFact1_mag);
-        }
-
-        /* apply scaling */
-        qmfRealSlot[bin] = fMult(qmfRealSlot[bin], drcFact_mag);
-        if (!useLP) {
-          qmfImagSlot[bin] = fMult(qmfImagSlot[bin], drcFact_mag);
-        }
-
-        /* save previous factors */
-        if (col == (numQmfSubSamples>>1)-1) {
-          hDrcData->prevFact_mag[bin] = fact_mag[band];
-        }
-      }
-    }
-    else {  /* short windows */
-      int startSample, stopSample;
-      FIXP_DBL invFrameSizeDiv8 = (frameLenFlag) ? (FIXP_DBL)0x1111111 : (FIXP_DBL)0x1000000;
-
-      if (frameLenFlag) {
-        /*  960 framing */
-        bottomMdct = 30/8 * (bottomMdct*8/30);
-        topMdct    = 30/8 * (topMdct*8/30);
-      }
-      else {
-        /* 1024 framing */
-        bottomMdct &= ~0x03;
-        topMdct    &= ~0x03;
-      }
-
-      /* startSample is truncated to the nearest corresponding start subsample in
-         the QMF of the short window bottom is present in:*/
-      startSample  = ((fMultIfloor( invFrameSizeDiv8, bottomMdct ) & 0x7) * numQmfSubSamples) >> 3;
-
-      /* stopSample is rounded upwards to the nearest corresponding stop subsample
-         in the QMF of the short window top is present in. */
-      stopSample  = ((fMultIceil( invFrameSizeDiv8, topMdct ) & 0xf) * numQmfSubSamples) >> 3;
-
-      bottomQmf = fMultIfloor( invFrameSizeDiv8, ((bottomMdct%(numQmfSubSamples<<2)) << 5) );
-      topQmf    = fMultIfloor( invFrameSizeDiv8, ((topMdct%(numQmfSubSamples<<2)) << 5) );
-
-      /* extend last band */
-      if (band == ((int)numBands-1)) {
-        topQmf = (64);
-        stopSample = numQmfSubSamples;
-      }
-
-      if (topQmf == 0) {
-        topQmf = (64);
-      }
-
-      /* save previous factors */
-      if (stopSample == numQmfSubSamples) {
-        int tmpBottom = bottomQmf;
-
-        if (((numQmfSubSamples-1) & ~0x03) > startSample) {
-            tmpBottom = 0;    /* band starts in previous short window */
-        }
-
-        for (bin = tmpBottom; bin < topQmf; bin++) {
-          hDrcData->prevFact_mag[bin] = fact_mag[band];
-        }
-      }
-
-      /* apply */
-      if ((col >= startSample) && (col < stopSample)) {
-        if ((col & ~0x03) > startSample) {
-            bottomQmf = 0;    /* band starts in previous short window */
-        }
-        if (col < ((stopSample-1) & ~0x03)) {
-            topQmf = (64);   /* band ends in next short window */
-        }
-
-        drcFact_mag = fact_mag[band];
-
-        /* normalize scale factor */
-        if (fact_exp < maxShift) {
-          drcFact_mag >>= maxShift - fact_exp;
-        }
-
-        /* apply scaling */
-        for (bin = bottomQmf; bin < topQmf; bin++) {
-          qmfRealSlot[bin] = fMult(qmfRealSlot[bin], drcFact_mag);
-          if (!useLP) {
-            qmfImagSlot[bin] = fMult(qmfImagSlot[bin], drcFact_mag);
-          }
-        }
-      }
-    }
-
-    bottomMdct = topMdct;
-  }   /* end of bands loop */
-
-  if (col == (numQmfSubSamples>>1)-1) {
-    hDrcData->prevFact_exp = fact_exp;
-  }
-}
-
-
-/*!
-  \brief Apply DRC factors frame based.
-
-  \hDrcData Handle to DRC channel data.
-  \qmfRealSlot Pointer to real valued QMF data of the whole frame.
-  \qmfImagSlot Pointer to the imaginary QMF data of the whole frame.
-  \numQmfSubSamples Total number of time slots for one frame.
-  \scaleFactor Pointer to the out scale factor of the frame.
-
-  \return None.
-*/
-void sbrDecoder_drcApply (
-    HANDLE_SBR_DRC_CHANNEL  hDrcData,
-    FIXP_DBL **QmfBufferReal,
-    FIXP_DBL **QmfBufferImag,
-    int  numQmfSubSamples,
-    int *scaleFactor
-  )
-{
-  int col;
-  int maxShift = 0;
-
-  if (hDrcData == NULL) {
-    return;
-  }
-  if (hDrcData->enable == 0) {
-    return;  /* Avoid changing the scaleFactor even though the processing is disabled. */
-  }
-
-  /* get max scale factor */
-  if (hDrcData->prevFact_exp > maxShift) {
-    maxShift = hDrcData->prevFact_exp;
-  }
-  if (hDrcData->currFact_exp > maxShift) {
-    maxShift = hDrcData->currFact_exp;
-  }
-  if (hDrcData->nextFact_exp > maxShift) {
-    maxShift = hDrcData->nextFact_exp;
-  }
-
-  for (col = 0; col < numQmfSubSamples; col++)
-  {
-    FIXP_DBL *qmfSlotReal = QmfBufferReal[col];
-    FIXP_DBL *qmfSlotImag = (QmfBufferImag == NULL) ? NULL : QmfBufferImag[col];
-
-    sbrDecoder_drcApplySlot (
-      hDrcData,
-      qmfSlotReal,
-      qmfSlotImag,
-      col,
-      numQmfSubSamples,
-      maxShift
-    );
-  }
-
-  *scaleFactor += maxShift;
-}
-