Remove FDK-AAC

1 files changed, 0 insertions, 382 deletions

diff --git a/libAACdec/src/aacdec_pns.cpp b/libAACdec/src/aacdec_pns.cpp
deleted file mode 100644
index 541ef07..0000000
--- a/libAACdec/src/aacdec_pns.cpp
+++ /dev/null
@@ -1,382 +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):   Josef Hoepfl
-   Description: perceptual noise substitution tool
-
-******************************************************************************/
-
-#include "aacdec_pns.h"
-
-
-#include "aac_ram.h"
-#include "aac_rom.h"
-#include "channelinfo.h"
-#include "block.h"
-#include "FDK_bitstream.h"
-
-#include "genericStds.h"
-
-
-#define NOISE_OFFSET 90           /* cf. ISO 14496-3 p. 175 */
-
-/*!
-  \brief Reset InterChannel and PNS data
-
-  The function resets the InterChannel and PNS data
-*/
-void CPns_ResetData(
-    CPnsData *pPnsData,
-    CPnsInterChannelData *pPnsInterChannelData
-    )
-{
-  /* Assign pointer always, since pPnsData is not persistent data */
-  pPnsData->pPnsInterChannelData = pPnsInterChannelData;
-  pPnsData->PnsActive = 0;
-  pPnsData->CurrentEnergy = 0;
-
-  FDKmemclear(pPnsData->pnsUsed,(8*16)*sizeof(UCHAR));
-  FDKmemclear(pPnsInterChannelData->correlated,(8*16)*sizeof(UCHAR));
-}
-
-/*!
-  \brief Initialize PNS data
-
-  The function initializes the PNS data
-*/
-void CPns_InitPns(
-    CPnsData *pPnsData,
-    CPnsInterChannelData *pPnsInterChannelData,
-    INT* currentSeed, INT* randomSeed)
-{
-  /* save pointer to inter channel data */
-  pPnsData->pPnsInterChannelData = pPnsInterChannelData;
-
-  /* use pointer because seed has to be
-     same, left and right channel ! */
-  pPnsData->currentSeed = currentSeed;
-  pPnsData->randomSeed  = randomSeed;
-}
-
-/*!
-  \brief Indicates if PNS is used
-
-  The function returns a value indicating whether PNS is used or not
-  acordding to the noise energy
-
-  \return  PNS used
-*/
-int CPns_IsPnsUsed (const CPnsData *pPnsData,
-                    const int group,
-                    const int band)
-{
-  unsigned pns_band = group*16+band;
-
-  return pPnsData->pnsUsed[pns_band] & (UCHAR)1;
-}
-
-/*!
-  \brief Set correlation
-
-  The function activates the noise correlation between the channel pair
-*/
-void CPns_SetCorrelation(CPnsData *pPnsData,
-                         const int group,
-                         const int band,
-                         const int outofphase)
-{
-  CPnsInterChannelData *pInterChannelData = pPnsData->pPnsInterChannelData;
-  unsigned pns_band = group*16+band;
-
-  pInterChannelData->correlated[pns_band] = (outofphase) ? 3 : 1;
-}
-
-/*!
-  \brief Indicates if correlation is used
-
-  The function indicates if the noise correlation between the channel pair
-  is activated
-
-  \return  PNS is correlated
-*/
-static
-int CPns_IsCorrelated(const CPnsData *pPnsData,
-                      const int group,
-                      const int band)
-{
-  CPnsInterChannelData *pInterChannelData = pPnsData->pPnsInterChannelData;
-  unsigned pns_band = group*16+band;
-
-  return (pInterChannelData->correlated[pns_band] & 0x01) ? 1 : 0;
-}
-
-/*!
-  \brief Indicates if correlated out of phase mode is used.
-
-  The function indicates if the noise correlation between the channel pair
-  is activated in out-of-phase mode.
-
-  \return  PNS is out-of-phase
-*/
-static
-int CPns_IsOutOfPhase(const CPnsData *pPnsData,
-                      const int group,
-                      const int band)
-{
-  CPnsInterChannelData *pInterChannelData = pPnsData->pPnsInterChannelData;
-  unsigned pns_band = group*16+band;
-
-  return (pInterChannelData->correlated[pns_band] & 0x02) ? 1 : 0;
-}
-
-/*!
-  \brief Read PNS information
-
-  The function reads the PNS information from the bitstream
-*/
-void CPns_Read (CPnsData *pPnsData,
-                HANDLE_FDK_BITSTREAM bs,
-                const CodeBookDescription *hcb,
-                SHORT *pScaleFactor,
-                UCHAR global_gain,
-                int band,
-                int group /* = 0 */)
-{
-  int delta ;
-  UINT pns_band = group*16+band;
-
-  if (pPnsData->PnsActive) {
-    /* Next PNS band case */
-    delta = CBlock_DecodeHuffmanWord (bs, hcb) - 60;
-  } else {
-    /* First PNS band case */
-    int noiseStartValue = FDKreadBits(bs,9);
-
-    delta = noiseStartValue - 256 ;
-    pPnsData->PnsActive = 1;
-    pPnsData->CurrentEnergy = global_gain - NOISE_OFFSET;
-  }
-
-  pPnsData->CurrentEnergy += delta ;
-  pScaleFactor[pns_band] = pPnsData->CurrentEnergy;
-
-  pPnsData->pnsUsed[pns_band] = 1;
-}
-
-
-/**
- * \brief Generate a vector of noise of given length. The noise values are
- *        scaled in order to yield a noise energy of 1.0
- * \param spec pointer to were the noise values will be written to.
- * \param size amount of noise values to be generated.
- * \param pRandomState pointer to the state of the random generator being used.
- * \return exponent of generated noise vector.
- */
-static int GenerateRandomVector (FIXP_DBL *RESTRICT spec,
-                                  int size,
-                                  int *pRandomState)
-{
-  int i, invNrg_e = 0, nrg_e = 0;
-  FIXP_DBL invNrg_m, nrg_m = FL2FXCONST_DBL(0.0f) ;
-  FIXP_DBL *RESTRICT ptr = spec;
-  int randomState = *pRandomState;
-
-#define GEN_NOISE_NRG_SCALE 7
-
-  /* Generate noise and calculate energy. */
-  for (i=0; i<size; i++)
-  {
-    randomState = (1664525L * randomState) + 1013904223L; // Numerical Recipes
-    nrg_m = fPow2AddDiv2(nrg_m, (FIXP_DBL)randomState>>GEN_NOISE_NRG_SCALE);
-    *ptr++ = (FIXP_DBL)randomState;
-  }
-  nrg_e = GEN_NOISE_NRG_SCALE*2 + 1;
-
-  /* weight noise with = 1 / sqrt_nrg; */
-  invNrg_m = invSqrtNorm2(nrg_m<<1, &invNrg_e);
-  invNrg_e += -((nrg_e-1)>>1);
-
-  for (i=size; i--; )
-  {
-    spec[i] = fMult(spec[i], invNrg_m);
-  }
-
-  /* Store random state */
-  *pRandomState = randomState;
-
-  return invNrg_e;
-}
-
-static void ScaleBand (FIXP_DBL *RESTRICT spec, int size, int scaleFactor, int specScale, int noise_e, int out_of_phase)
-{
-  int i, shift, sfExponent;
-  FIXP_DBL sfMatissa;
-
-  /* Get gain from scale factor value = 2^(scaleFactor * 0.25) */
-  sfMatissa = MantissaTable[scaleFactor & 0x03][0];
-  /* sfExponent = (scaleFactor >> 2) + ExponentTable[scaleFactor & 0x03][0]; */
-  /* Note:  ExponentTable[scaleFactor & 0x03][0] is always 1. */
-  sfExponent = (scaleFactor >> 2) + 1;
-
-  if (out_of_phase != 0) {
-    sfMatissa = -sfMatissa;
-  }
-
-  /* +1 because of fMultDiv2 below. */
-  shift = sfExponent - specScale + 1 + noise_e;
-
-  /* Apply gain to noise values */
-  if (shift>=0) {
-    shift = fixMin( shift, DFRACT_BITS-1 );
-    for (i = size ; i-- != 0; ) {
-      spec [i] = fMultDiv2 (spec [i], sfMatissa) << shift;
-    }
-  } else {
-    shift = fixMin( -shift, DFRACT_BITS-1 );
-    for (i = size ; i-- != 0; ) {
-      spec [i] = fMultDiv2 (spec [i], sfMatissa) >> shift;
-    }
-  }
-}
-
-
-/*!
-  \brief Apply PNS
-
-  The function applies PNS (i.e. it generates noise) on the bands
-  flagged as noisy bands
-
-*/
-void CPns_Apply (const CPnsData *pPnsData,
-                 const CIcsInfo *pIcsInfo,
-                 SPECTRAL_PTR pSpectrum,
-                 const SHORT    *pSpecScale,
-                 const SHORT    *pScaleFactor,
-                 const SamplingRateInfo *pSamplingRateInfo,
-                 const INT granuleLength,
-                 const int channel)
-{
-  if (pPnsData->PnsActive) {
-    const short *BandOffsets = GetScaleFactorBandOffsets(pIcsInfo, pSamplingRateInfo);
-
-    int ScaleFactorBandsTransmitted = GetScaleFactorBandsTransmitted(pIcsInfo);
-
-    for (int window = 0, group = 0; group < GetWindowGroups(pIcsInfo); group++) {
-      for (int groupwin = 0; groupwin < GetWindowGroupLength(pIcsInfo, group); groupwin++, window++) {
-        FIXP_DBL *spectrum = SPEC(pSpectrum, window, granuleLength);
-
-        for (int band = 0 ; band < ScaleFactorBandsTransmitted; band++) {
-          if (CPns_IsPnsUsed (pPnsData, group, band)) {
-            UINT pns_band = group*16+band;
-
-            int bandWidth = BandOffsets [band + 1] - BandOffsets [band] ;
-            int noise_e;
-
-            FDK_ASSERT(bandWidth >= 0);
-
-            if (channel > 0 && CPns_IsCorrelated(pPnsData, group, band))
-            {
-              noise_e = GenerateRandomVector (spectrum + BandOffsets [band], bandWidth,
-                                    &pPnsData->randomSeed [pns_band]) ;
-            }
-            else
-            {
-              pPnsData->randomSeed [pns_band] = *pPnsData->currentSeed ;
-
-              noise_e = GenerateRandomVector (spectrum + BandOffsets [band], bandWidth,
-                                    pPnsData->currentSeed) ;
-            }
-
-            int outOfPhase  = CPns_IsOutOfPhase (pPnsData, group, band);
-
-            ScaleBand (spectrum + BandOffsets [band], bandWidth,
-                       pScaleFactor[pns_band],
-                       pSpecScale[window], noise_e, outOfPhase) ;
-          }
-        }
-      }
-    }
-  }
-}