Remove FDK-AAC

1 files changed, 0 insertions, 1114 deletions

diff --git a/libAACdec/src/aacdec_drc.cpp b/libAACdec/src/aacdec_drc.cpp
deleted file mode 100644
index 2666454..0000000
--- a/libAACdec/src/aacdec_drc.cpp
+++ /dev/null
@@ -1,1114 +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 AAC
-
-******************************************************************************/
-
-#include "aacdec_drc.h"
-
-
-#include "channelinfo.h"
-#include "aac_rom.h"
-
- #include "sbrdecoder.h"
-
-/*
- * Dynamic Range Control
- */
-
-/* For parameter conversion */
-#define DRC_PARAMETER_BITS        ( 7 )
-#define DRC_MAX_QUANT_STEPS       ( 1<<DRC_PARAMETER_BITS )
-#define DRC_MAX_QUANT_FACTOR      ( DRC_MAX_QUANT_STEPS-1 )
-#define DRC_PARAM_QUANT_STEP      ( FL2FXCONST_DBL(1.0f/(float)DRC_MAX_QUANT_FACTOR) )
-#define DRC_PARAM_SCALE           ( 1 )
-
-#define MAX_REFERENCE_LEVEL       ( 127 )
-
- #define DVB_ANC_DATA_SYNC_BYTE   ( 0xBC )    /* DVB ancillary data sync byte. */
-
-/*!
-  \brief Initialize DRC information
-
-  \self Handle of DRC info
-
-  \return none
-*/
-void aacDecoder_drcInit (
-    HANDLE_AAC_DRC self )
-{
-  CDrcParams *pParams;
-
-  if (self == NULL) {
-    return;
-  }
-
-  /* init control fields */
-  self->enable = 0;
-  self->numThreads = 0;
-  self->digitalNorm = 0;
-
-  /* init params */
-  pParams = &self->params;
-  pParams->bsDelayEnable = 0;
-  pParams->cut      = FL2FXCONST_DBL(0.0f);
-  pParams->usrCut   = FL2FXCONST_DBL(0.0f);
-  pParams->boost    = FL2FXCONST_DBL(0.0f);
-  pParams->usrBoost = FL2FXCONST_DBL(0.0f);
-  pParams->targetRefLevel = AACDEC_DRC_DEFAULT_REF_LEVEL;
-  pParams->expiryFrame = AACDEC_DRC_DFLT_EXPIRY_FRAMES;
-  pParams->applyHeavyCompression = 0;
-
-  /* initial program ref level = target ref level */
-  self->progRefLevel = pParams->targetRefLevel;
-}
-
-
-/*!
-  \brief Initialize DRC control data for one channel
-
-  \self Handle of DRC info
-
-  \return none
-*/
-void aacDecoder_drcInitChannelData (
-    CDrcChannelData *pDrcChData )
-{
-  if (pDrcChData != NULL) {
-    pDrcChData->expiryCount = 0;
-    pDrcChData->numBands    = 1;
-    pDrcChData->bandTop[0]  = (1024 >> 2) - 1;
-    pDrcChData->drcValue[0] = 0;
-    pDrcChData->drcInterpolationScheme = 0;
-    pDrcChData->drcDataType = UNKNOWN_PAYLOAD;
-  }
-}
-
-
-/*!
-  \brief  Set one single DRC parameter
-
-  \self   Handle of DRC info.
-  \param  Parameter to be set.
-  \value  Value to be set.
-
-  \return an error code.
-*/
-AAC_DECODER_ERROR aacDecoder_drcSetParam (
-    HANDLE_AAC_DRC    self,
-    AACDEC_DRC_PARAM  param,
-    INT               value )
-{
-  AAC_DECODER_ERROR ErrorStatus = AAC_DEC_OK;
-
-  switch (param)
-  {
-  case DRC_CUT_SCALE:
-    /* set attenuation scale factor */
-    if ( (value < 0)
-      || (value > DRC_MAX_QUANT_FACTOR) ) {
-      return AAC_DEC_SET_PARAM_FAIL;
-    }
-    if (self == NULL) {
-      return AAC_DEC_INVALID_HANDLE;
-    }
-    self->params.usrCut = (FIXP_DBL)((INT)(DRC_PARAM_QUANT_STEP>>DRC_PARAM_SCALE) * (INT)value);
-    if (self->params.applyHeavyCompression == 0)
-      self->params.cut = self->params.usrCut;
-    break;
-  case DRC_BOOST_SCALE:
-    /* set boost factor */
-    if ( (value < 0)
-      || (value > DRC_MAX_QUANT_FACTOR) ) {
-      return AAC_DEC_SET_PARAM_FAIL;
-    }
-    if (self == NULL) {
-      return AAC_DEC_INVALID_HANDLE;
-    }
-    self->params.usrBoost = (FIXP_DBL)((INT)(DRC_PARAM_QUANT_STEP>>DRC_PARAM_SCALE) * (INT)value);
-    if (self->params.applyHeavyCompression == 0)
-      self->params.boost = self->params.usrBoost;
-    break;
-  case TARGET_REF_LEVEL:
-    if ( value >  MAX_REFERENCE_LEVEL
-      || value < -MAX_REFERENCE_LEVEL ) {
-      return AAC_DEC_SET_PARAM_FAIL;
-    }
-    if (self == NULL) {
-      return AAC_DEC_INVALID_HANDLE;
-    }
-    if (value < 0) {
-      self->digitalNorm = 0;
-    }
-    else {
-      /* ref_level must be between 0 and MAX_REFERENCE_LEVEL, inclusive */
-      self->digitalNorm    = 1;
-      if (self->params.targetRefLevel != (SCHAR)value) {
-        self->params.targetRefLevel = (SCHAR)value;
-        self->progRefLevel = (SCHAR)value;  /* Always set the program reference level equal to the
-                                               target level according to 4.5.2.7.3 of ISO/IEC 14496-3. */
-      }
-    }
-    break;
-  case APPLY_HEAVY_COMPRESSION:
-    if (value < 0 || value > 1) {
-      return AAC_DEC_SET_PARAM_FAIL;
-    }
-    if (self == NULL) {
-      return AAC_DEC_INVALID_HANDLE;
-    }
-    if (self->params.applyHeavyCompression != (UCHAR)value) {
-      if (value == 1) {
-        /* Disable scaling of DRC values by setting the max values */
-        self->params.boost = FL2FXCONST_DBL(1.0f/(float)(1<<DRC_PARAM_SCALE));
-        self->params.cut   = FL2FXCONST_DBL(1.0f/(float)(1<<DRC_PARAM_SCALE));
-      } else {
-        /* Restore the user params */
-        self->params.boost = self->params.usrBoost;
-        self->params.cut   = self->params.usrCut;
-      }
-      /* Store new parameter value */
-      self->params.applyHeavyCompression = (UCHAR)value;
-    }
-    break;
-  case DRC_BS_DELAY:
-    if (value < 0 || value > 1) {
-      return AAC_DEC_SET_PARAM_FAIL;
-    }
-    if (self == NULL) {
-      return AAC_DEC_INVALID_HANDLE;
-    }
-    self->params.bsDelayEnable = value;
-    break;
-  case DRC_DATA_EXPIRY_FRAME:
-    if (self == NULL) {
-      return AAC_DEC_INVALID_HANDLE;
-    }
-    self->params.expiryFrame = (UINT)value;
-    break;
-  default:
-    return AAC_DEC_SET_PARAM_FAIL;
-  }  /* switch(param) */
-
-  /* switch on/off processing */
-  self->enable = ( (self->params.boost > (FIXP_DBL)0)
-                || (self->params.cut   > (FIXP_DBL)0)
-                || (self->params.applyHeavyCompression != 0)
-                || (self->digitalNorm == 1) );
-
-
-  return ErrorStatus;
-}
-
-
-static int parseExcludedChannels( UINT *excludedChnsMask,
-                                  HANDLE_FDK_BITSTREAM bs )
-{
-  UINT excludeMask = 0;
-  UINT i, j;
-  int  bitCnt = 9;
-
-  for (i = 0, j = 1; i < 7; i++, j<<=1) {
-    if (FDKreadBits(bs,1)) {
-      excludeMask |= j;
-    }
-  }
-
-  /* additional_excluded_chns */
-  while (FDKreadBits(bs,1)) {
-    for (i = 0; i < 7; i++, j<<=1) {
-      if (FDKreadBits(bs,1)) {
-        excludeMask |= j;
-      }
-    }
-    bitCnt += 9;
-    FDK_ASSERT(j < (UINT)-1);
-  }
-
-  *excludedChnsMask = excludeMask;
-
-  return (bitCnt);
-}
-
-
-/*!
-  \brief Save DRC payload bitstream position
-
-  \self Handle of DRC info
-  \bs Handle of FDK bitstream
-
-  \return The number of DRC payload bits
-*/
-int aacDecoder_drcMarkPayload (
-    HANDLE_AAC_DRC self,
-    HANDLE_FDK_BITSTREAM bs,
-    AACDEC_DRC_PAYLOAD_TYPE type )
-{
-  UINT bsStartPos;
-  int  i, numBands = 1, bitCnt = 0;
-
-  if (self == NULL) {
-    return 0;
-  }
-
-  bsStartPos = FDKgetValidBits(bs);
-
-  switch (type) {
-    case MPEG_DRC_EXT_DATA:
-    {
-      bitCnt = 4;
-
-      if (FDKreadBits(bs,1)) {          /* pce_tag_present */
-        FDKreadBits(bs,8);              /* pce_instance_tag + drc_tag_reserved_bits */
-        bitCnt+=8;
-      }
-
-      if (FDKreadBits(bs,1)) {          /* excluded_chns_present */
-        FDKreadBits(bs,7);              /* exclude mask [0..7] */
-        bitCnt+=8;
-        while (FDKreadBits(bs,1)) {     /* additional_excluded_chns */
-          FDKreadBits(bs,7);            /* exclude mask [x..y] */
-          bitCnt+=8;
-        }
-      }
-
-      if (FDKreadBits(bs,1)) {          /* drc_bands_present */
-        numBands += FDKreadBits(bs, 4); /* drc_band_incr */
-        FDKreadBits(bs,4);              /* reserved */
-        bitCnt+=8;
-        for (i = 0; i < numBands; i++) {
-          FDKreadBits(bs,8);            /* drc_band_top[i] */
-          bitCnt+=8;
-        }
-      }
-
-      if (FDKreadBits(bs,1)) {          /* prog_ref_level_present */
-        FDKreadBits(bs,8);              /* prog_ref_level + prog_ref_level_reserved_bits */
-        bitCnt+=8;
-      }
-
-      for (i = 0; i < numBands; i++) {
-        FDKreadBits(bs,8);              /* dyn_rng_sgn[i] + dyn_rng_ctl[i] */
-        bitCnt+=8;
-      }
-
-      if ( (self->numPayloads < MAX_DRC_THREADS)
-        && ((INT)FDKgetValidBits(bs) >= 0) )
-      {
-        self->drcPayloadPosition[self->numPayloads++] = bsStartPos;
-      }
-    }
-    break;
-
-    case DVB_DRC_ANC_DATA:
-      bitCnt += 8;
-      /* check sync word */
-      if (FDKreadBits(bs, 8) == DVB_ANC_DATA_SYNC_BYTE)
-      {
-        int dmxLevelsPresent, compressionPresent;
-        int coarseGrainTcPresent, fineGrainTcPresent;
-
-        /* bs_info field */ 
-        FDKreadBits(bs, 8);                          /* mpeg_audio_type, dolby_surround_mode, presentation_mode */
-        bitCnt+=8;
-
-        /* Evaluate ancillary_data_status */
-        FDKreadBits(bs, 3);                          /* reserved, set to 0 */
-        dmxLevelsPresent = FDKreadBits(bs, 1);       /* downmixing_levels_MPEG4_status */
-        FDKreadBits(bs, 1);                          /* reserved, set to 0 */
-        compressionPresent   = FDKreadBits(bs, 1);   /* audio_coding_mode_and_compression status */
-        coarseGrainTcPresent = FDKreadBits(bs, 1);   /* coarse_grain_timecode_status */
-        fineGrainTcPresent   = FDKreadBits(bs, 1);   /* fine_grain_timecode_status */
-        bitCnt+=8;
-
-        /* MPEG4 downmixing levels */
-        if (dmxLevelsPresent) {
-          FDKreadBits(bs, 8);                        /* downmixing_levels_MPEG4 */
-          bitCnt+=8;
-        }
-        /* audio coding mode and compression status */
-        if (compressionPresent) {
-          FDKreadBits(bs, 16);                        /* audio_coding_mode, Compression_value */
-          bitCnt+=16;
-        }
-        /* coarse grain timecode */
-        if (coarseGrainTcPresent) {
-          FDKreadBits(bs, 16);                       /* coarse_grain_timecode */
-          bitCnt+=16;
-        }
-        /* fine grain timecode */
-        if (fineGrainTcPresent) {
-          FDKreadBits(bs, 16);                       /* fine_grain_timecode */
-          bitCnt+=16;
-        }
-        if ( !self->dvbAncDataAvailable
-          && ((INT)FDKgetValidBits(bs) >= 0) )
-        {
-          self->dvbAncDataPosition  = bsStartPos;
-          self->dvbAncDataAvailable = 1;
-        }
-      }
-      break;
-
-    default:
-      break;
-  }
-
-  return (bitCnt);
-}
-
-
-/*!
-  \brief Parse DRC parameters from bitstream
-
-  \bs Handle of FDK bitstream (in)
-  \pDrcBs Pointer to DRC payload data container (out)
-  \payloadPosition Bitstream position of MPEG DRC data junk (in)
-
-  \return Number of bits read (0 in case of a parse error)
-*/
-static int aacDecoder_drcParse (
-    HANDLE_FDK_BITSTREAM  bs,
-    CDrcPayload          *pDrcBs,
-    UINT                  payloadPosition )
-{
-  int i, numBands, bitCnt = 4;
-
-  /* Move to the beginning of the DRC payload field */
-  FDKpushBiDirectional(bs, FDKgetValidBits(bs)-payloadPosition);
-
-  /* pce_tag_present */
-  if (FDKreadBits(bs,1))
-  {
-    pDrcBs->pceInstanceTag = FDKreadBits(bs, 4);  /* pce_instance_tag */
-    /* only one program supported */
-    FDKreadBits(bs, 4);  /* drc_tag_reserved_bits */
-    bitCnt += 8;
-  } else {
-    pDrcBs->pceInstanceTag = -1;  /* not present */
-  }
-
-  if (FDKreadBits(bs,1)) {        /* excluded_chns_present */
-    /* get excluded_chn_mask */
-    bitCnt += parseExcludedChannels(&pDrcBs->excludedChnsMask, bs);
-  } else {
-    pDrcBs->excludedChnsMask = 0;
-  }
-
-  numBands = 1;
-  if (FDKreadBits(bs,1))  /* drc_bands_present */
-  {
-    /* get band_incr */
-    numBands += FDKreadBits(bs, 4);  /* drc_band_incr */
-    pDrcBs->channelData.drcInterpolationScheme = FDKreadBits(bs, 4);  /* drc_interpolation_scheme */
-    bitCnt += 8;
-    /* band_top */
-    for (i = 0; i < numBands; i++)
-    {
-      pDrcBs->channelData.bandTop[i] = FDKreadBits(bs, 8);  /* drc_band_top[i] */
-      bitCnt += 8;
-    }
-  }
-  else {
-    pDrcBs->channelData.bandTop[0] = (1024 >> 2) - 1;  /* ... comprising the whole spectrum. */;
-  }
-
-  pDrcBs->channelData.numBands = numBands;
-
-  if (FDKreadBits(bs,1))                        /* prog_ref_level_present */
-  {
-    pDrcBs->progRefLevel = FDKreadBits(bs, 7);  /* prog_ref_level */
-    FDKreadBits(bs, 1);                         /* prog_ref_level_reserved_bits */
-    bitCnt += 8;
-  } else {
-    pDrcBs->progRefLevel = -1;
-  }
-
-  for (i = 0; i < numBands; i++)
-  {
-    pDrcBs->channelData.drcValue[i]  = FDKreadBits(bs, 1) << 7;   /* dyn_rng_sgn[i] */
-    pDrcBs->channelData.drcValue[i] |= FDKreadBits(bs, 7) & 0x7F; /* dyn_rng_ctl[i] */
-    bitCnt += 8;
-  }
-
-  /* Set DRC payload type */
-  pDrcBs->channelData.drcDataType = MPEG_DRC_EXT_DATA;
-
-  return (bitCnt);
-}
-
-
-/*!
-  \brief Parse heavy compression value transported in DSEs of DVB streams with MPEG-4 content.
-
-  \bs Handle of FDK bitstream (in)
-  \pDrcBs Pointer to DRC payload data container (out)
-  \payloadPosition Bitstream position of DVB ancillary data junk
-
-  \return Number of bits read (0 in case of a parse error)
-*/
-#define DVB_COMPRESSION_SCALE   ( 8 )       /* 48,164 dB */
-
-static int aacDecoder_drcReadCompression (
-    HANDLE_FDK_BITSTREAM  bs,
-    CDrcPayload          *pDrcBs,
-    UINT                  payloadPosition )
-{
-  int  bitCnt = 0;
-  int  dmxLevelsPresent, compressionPresent;
-  int  coarseGrainTcPresent, fineGrainTcPresent;
-
-  /* Move to the beginning of the DRC payload field */
-  FDKpushBiDirectional(bs, FDKgetValidBits(bs)-payloadPosition);
-
-  /* Sanity checks */
-  if ( FDKgetValidBits(bs) < 24 ) {
-    return 0;
-  }
-
-  /* Check sync word */
-  if (FDKreadBits(bs, 8) != DVB_ANC_DATA_SYNC_BYTE) {
-    return 0;
-  }
-
-  /* Evaluate bs_info field */ 
-  if (FDKreadBits(bs, 2) != 3) {               /* mpeg_audio_type */
-    /* No MPEG-4 audio data */
-    return 0;
-  }
-  FDKreadBits(bs, 2);                          /* dolby_surround_mode */
-  FDKreadBits(bs, 2);                          /* presentation_mode */
-  if (FDKreadBits(bs, 2) != 0) {               /* reserved, set to 0 */
-    return 0;
-  }
-
-  /* Evaluate ancillary_data_status */
-  if (FDKreadBits(bs, 3) != 0) {               /* reserved, set to 0 */
-    return 0;
-  }
-  dmxLevelsPresent = FDKreadBits(bs, 1);       /* downmixing_levels_MPEG4_status */
-  if (FDKreadBits(bs, 1) != 0) {               /* reserved, set to 0 */
-    return 0;
-  }
-  compressionPresent   = FDKreadBits(bs, 1);   /* audio_coding_mode_and_compression status */
-  coarseGrainTcPresent = FDKreadBits(bs, 1);   /* coarse_grain_timecode_status */
-  fineGrainTcPresent   = FDKreadBits(bs, 1);   /* fine_grain_timecode_status */
-  bitCnt += 24;
-
-  if (dmxLevelsPresent) {
-    FDKreadBits(bs, 8);                        /* downmixing_levels_MPEG4 */
-    bitCnt += 8;
-  }
-
-  /* audio_coding_mode_and_compression_status */
-  if (compressionPresent)
-  {
-    UCHAR compressionOn, compressionValue;
-
-    /* audio_coding_mode */
-    if ( FDKreadBits(bs, 7) != 0 ) {  /* The reserved bits shall be set to "0". */
-      return 0;
-    }
-    compressionOn    = (UCHAR)FDKreadBits(bs, 1);  /* compression_on */
-    compressionValue = (UCHAR)FDKreadBits(bs, 8);  /* Compression_value */
-    bitCnt += 16;
-
-    if ( compressionOn ) {
-      /* A compression value is available so store the data just like MPEG DRC data */
-      pDrcBs->channelData.numBands    =  1;                            /* One band ... */
-      pDrcBs->channelData.drcValue[0] =  compressionValue;             /* ... with one value ... */
-      pDrcBs->channelData.bandTop[0]  = (1024 >> 2) - 1;  /* ... comprising the whole spectrum. */
-      pDrcBs->pceInstanceTag          = -1;                            /* Not present */
-      pDrcBs->progRefLevel            = -1;                            /* Not present */
-      pDrcBs->channelData.drcDataType =  DVB_DRC_ANC_DATA;             /* Set DRC payload type to DVB. */
-    } else {
-      /* No compression value available */
-      /* CAUTION: It is not clearly defined by standard how to react in this situation. */
-      /* Turn down the compression value to aprox. 0dB */
-      pDrcBs->channelData.numBands    =  1;                            /* One band ... */
-      pDrcBs->channelData.drcValue[0] =  0x80;                         /* ... with aprox. 0dB ... */
-      pDrcBs->channelData.bandTop[0]  = (1024 >> 2) - 1;  /* ... comprising the whole spectrum. */
-      pDrcBs->channelData.drcDataType =  DVB_DRC_ANC_DATA;             /* Set DRC payload type to DVB. */
-
-      /* If compression_on field is set to "0" the compression_value field shall be "0000 0000". */
-      if (compressionValue != 0) {
-        return 0;
-      }
-    }
-  }
-
-  /* Read timecodes if available just to get the right amount of bits. */
-  if (coarseGrainTcPresent) {
-    FDKreadBits(bs, 16);      /* coarse_grain_timecode */
-    bitCnt += 16;
-  }
-  if (fineGrainTcPresent) {
-    FDKreadBits(bs, 16);      /* fine_grain_timecode */
-    bitCnt += 16;
-  }
-
-  return (bitCnt);
-}
-
-
-/* 
- * Prepare DRC processing
- */
-static int aacDecoder_drcExtractAndMap (
-        HANDLE_AAC_DRC  self,
-        HANDLE_FDK_BITSTREAM hBs,
-        CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[],
-        UCHAR  pceInstanceTag,
-        UCHAR  channelMapping[], /* Channel mapping translating drcChannel index to canonical channel index */
-        int    validChannels )
-{
-  CDrcPayload  threadBs[MAX_DRC_THREADS];
-  CDrcPayload *validThreadBs[MAX_DRC_THREADS];
-  CDrcParams  *pParams;
-  UINT backupBsPosition;
-  int  i, thread, validThreads = 0;
-  int  numExcludedChns[MAX_DRC_THREADS];
-
-  FDK_ASSERT(self != NULL);
-  FDK_ASSERT(hBs != NULL);
-  FDK_ASSERT(pAacDecoderStaticChannelInfo != NULL);
-
-  pParams = &self->params;
-
-  self->numThreads = 0;
-  backupBsPosition = FDKgetValidBits(hBs);
-
-  for (i = 0; i < self->numPayloads && self->numThreads < MAX_DRC_THREADS; i++) {
-    int bitsParsed;
-
-    /* Init payload data chunk. The memclear is very important because it initializes
-       the most values. Without it the module wouldn't work properly or crash. */
-    FDKmemclear(&threadBs[self->numThreads], sizeof(CDrcPayload));
-    threadBs[self->numThreads].channelData.bandTop[0]  = (1024 >> 2) - 1;
-
-    /* Extract payload */
-    bitsParsed = aacDecoder_drcParse( hBs,
-                                     &threadBs[self->numThreads],
-                                      self->drcPayloadPosition[i] );
-    if (bitsParsed > 0) {
-      self->numThreads++;
-    }
-  }
-  self->numPayloads = 0;
-
-  if (self->dvbAncDataAvailable)
-  { /* Append a DVB heavy compression payload thread if available. */
-    int bitsParsed;
-
-    /* Init payload data chunk. The memclear is very important because it initializes
-       the most values. Without it the module wouldn't work properly or crash. */
-    FDKmemclear(&threadBs[self->numThreads], sizeof(CDrcPayload));
-    threadBs[self->numThreads].channelData.bandTop[0]  = (1024 >> 2) - 1;
-
-    /* Extract payload */
-    bitsParsed = aacDecoder_drcReadCompression( hBs,
-                                               &threadBs[self->numThreads],
-                                                self->dvbAncDataPosition );
-    if (bitsParsed > 0) {
-      self->numThreads++;
-    }
-  }
-  self->dvbAncDataAvailable = 0;
-
-  /* Reset the bitbufffer */
-  FDKpushBiDirectional(hBs, FDKgetValidBits(hBs) - backupBsPosition);
-
-  /* calculate number of valid bits in excl_chn_mask */
-
-  /* coupling channels not supported */
-
-  /* check for valid threads */
-  for (thread = 0; thread < self->numThreads; thread++) {
-    CDrcPayload *pThreadBs = &threadBs[thread];
-    int numExclChns = 0;
-
-    switch ((AACDEC_DRC_PAYLOAD_TYPE)pThreadBs->channelData.drcDataType) {
-      default:
-        continue;
-      case MPEG_DRC_EXT_DATA:
-      case DVB_DRC_ANC_DATA:
-        break;
-    }
-
-    if (pThreadBs->pceInstanceTag >= 0) {  /* if PCE tag present */
-      if (pThreadBs->pceInstanceTag != pceInstanceTag) {
-        continue;  /* don't accept */
-      }
-    }
-
-    /* calculate number of excluded channels */
-    if (pThreadBs->excludedChnsMask > 0) {
-      INT exclMask = pThreadBs->excludedChnsMask;
-      int ch;
-      for (ch = 0; ch < validChannels; ch++) {
-        numExclChns += exclMask & 0x1;
-        exclMask >>= 1;
-      }
-    }
-    if (numExclChns < validChannels) {
-      validThreadBs[validThreads]   = pThreadBs;
-      numExcludedChns[validThreads] = numExclChns;
-      validThreads++;
-    }
-  }
-
-  if (validThreads > 1) {
-    int ch;
-
-    /* check consistency of excl_chn_mask amongst valid DRC threads */
-    for (ch = 0; ch < validChannels; ch++) {
-      int present = 0;
-
-      for (thread = 0; thread < validThreads; thread++) {
-        CDrcPayload *pThreadBs = validThreadBs[thread];
-
-
-        /* thread applies to this channel */
-        if ( (pThreadBs->channelData.drcDataType == MPEG_DRC_EXT_DATA)
-          && ( (numExcludedChns[thread] == 0)
-            || (!(pThreadBs->excludedChnsMask & (1<<ch))) ) ) {
-          present++;
-        }
-      }
-
-
-      if (present > 1) {
-        return -1;
-      }
-    }
-  }
-
-  /* map DRC bitstream information onto DRC channel information */
-  for (thread = 0; thread < validThreads; thread++)
-  {
-    CDrcPayload *pThreadBs = validThreadBs[thread];
-    INT exclMask = pThreadBs->excludedChnsMask;
-    AACDEC_DRC_PAYLOAD_TYPE drcPayloadType = (AACDEC_DRC_PAYLOAD_TYPE)pThreadBs->channelData.drcDataType;
-    int ch;
-
-    /* last progRefLevel transmitted is the one that is used
-     * (but it should really only be transmitted once per block!)
-     */
-    if (pThreadBs->progRefLevel >= 0) {
-      self->progRefLevel = pThreadBs->progRefLevel;
-      self->prlExpiryCount = 0;  /* Got a new value -> Reset counter */
-    }
-
-    /* SCE, CPE and LFE */
-    for (ch = 0; ch < validChannels; ch++) {
-      int mapedChannel = channelMapping[ch];
-
-      if ( ((exclMask & (1<<mapedChannel)) == 0)
-        && ( (drcPayloadType == MPEG_DRC_EXT_DATA)
-          || ((drcPayloadType == DVB_DRC_ANC_DATA) && self->params.applyHeavyCompression)
-         ) ) {
-        /* copy thread to channel */
-        pAacDecoderStaticChannelInfo[ch]->drcData = pThreadBs->channelData;
-      }
-    }
-    /* CCEs not supported by now */
-  }
-
-  /* Increment and check expiry counter for the program reference level: */
-  if ( (pParams->expiryFrame > 0)
-    && (self->prlExpiryCount++ > pParams->expiryFrame) )
-  { /* The program reference level is too old, so set it back to the target level. */
-    self->progRefLevel = pParams->targetRefLevel;
-    self->prlExpiryCount = 0;
-  }
-
-  return 0;
-}
-
-
-void aacDecoder_drcApply (
-        HANDLE_AAC_DRC          self,
-        void                   *pSbrDec,
-        CAacDecoderChannelInfo *pAacDecoderChannelInfo,
-        CDrcChannelData        *pDrcChData,
-        int  ch,   /* needed only for SBR */
-        int  aacFrameSize,
-        int  bSbrPresent )
-{
-  int band, top, bin, numBands;
-  int bottom = 0;
-  int modifyBins = 0;
-
-  FIXP_DBL max_mantissa;
-  INT max_exponent;
-
-  FIXP_DBL norm_mantissa = FL2FXCONST_DBL(0.0f);
-  INT  norm_exponent = 0;
-
-  FIXP_DBL fact_mantissa[MAX_DRC_BANDS];
-  INT  fact_exponent[MAX_DRC_BANDS];
-
-  CDrcParams  *pParams = &self->params;
-
-  FIXP_DBL    *pSpectralCoefficient  =  SPEC_LONG(pAacDecoderChannelInfo->pSpectralCoefficient);
-  CIcsInfo    *pIcsInfo              = &pAacDecoderChannelInfo->icsInfo;
-  SHORT       *pSpecScale            =  pAacDecoderChannelInfo->specScale;
-
-  int winSeq = pIcsInfo->WindowSequence;
-
-  /* Increment and check expiry counter */
-  if ( (pParams->expiryFrame > 0)
-    && (++pDrcChData->expiryCount > pParams->expiryFrame) )
-  { /* The DRC data is too old, so delete it. */
-    aacDecoder_drcInitChannelData( pDrcChData );
-  }
-
-  if (!self->enable) {
-    sbrDecoder_drcDisable( (HANDLE_SBRDECODER)pSbrDec, ch );
-    return;
-  }
-
-  numBands = pDrcChData->numBands;
-  top = FDKmax(0, numBands-1);
-
-  pDrcChData->bandTop[0] = fixMin(pDrcChData->bandTop[0], (aacFrameSize >> 2) - 1);
-
-  /* If program reference normalization is done in the digital domain,
-  modify factor to perform normalization.  prog_ref_level can
-  alternatively be passed to the system for modification of the level in
-  the analog domain.  Analog level modification avoids problems with
-  reduced DAC SNR (if signal is attenuated) or clipping (if signal is
-  boosted) */
-
-  if (self->digitalNorm == 1)
-  {
-    /* 0.5^((targetRefLevel - progRefLevel)/24) */
-    norm_mantissa = fLdPow(
-            FL2FXCONST_DBL(-1.0), /* log2(0.5) */
-            0,
-            (FIXP_DBL)((INT)(FL2FXCONST_DBL(1.0f/24.0)>>3) * (INT)(pParams->targetRefLevel-self->progRefLevel)),
-            3,
-           &norm_exponent );
-  }
-  else {
-    norm_mantissa = FL2FXCONST_DBL(0.5f);
-    norm_exponent = 1;
-  }
-
-
-  /* calc scale factors */
-  for (band = 0; band < numBands; band++)
-  {
-    UCHAR drcVal = pDrcChData->drcValue[band];
-    top = fixMin((int)( (pDrcChData->bandTop[band]+1)<<2 ), aacFrameSize);
-
-    fact_mantissa[band] = FL2FXCONST_DBL(0.5f);
-    fact_exponent[band] = 1;
-
-    if (  pParams->applyHeavyCompression
-      && ((AACDEC_DRC_PAYLOAD_TYPE)pDrcChData->drcDataType == DVB_DRC_ANC_DATA) )
-    {
-      INT compressionFactorVal_e;
-      int valX, valY;
-
-      valX = drcVal >> 4;
-      valY = drcVal & 0x0F;
-
-      /* calculate the unscaled heavy compression factor.
-         compressionFactor = 48.164 - 6.0206*valX - 0.4014*valY dB
-         range: -48.166 dB to 48.164 dB */
-      if ( drcVal != 0x7F ) {
-        fact_mantissa[band] =
-          fPowInt( FL2FXCONST_DBL(0.95483867181), /* -0.4014dB = 0.95483867181 */
-                   0,
-                   valY,
-                  &compressionFactorVal_e );
-
-        /* -0.0008dB (48.164 - 6.0206*8 = -0.0008) */
-        fact_mantissa[band] = fMult(FL2FXCONST_DBL(0.99990790084), fact_mantissa[band]);
-
-        fact_exponent[band] = DVB_COMPRESSION_SCALE - valX + compressionFactorVal_e;
-      }
-    } else
-    if ((AACDEC_DRC_PAYLOAD_TYPE)pDrcChData->drcDataType == MPEG_DRC_EXT_DATA)
-    {
-    /* apply the scaled dynamic range control words to factor.
-     * if scaling drc_cut (or drc_boost), or control word drc_mantissa is 0
-     * then there is no dynamic range compression
-     *
-     * if pDrcChData->drcSgn[band] is 
-     *  1 then gain is < 1 :  factor = 2^(-self->cut   * pDrcChData->drcMag[band] / 24)
-     *  0 then gain is > 1 :  factor = 2^( self->boost * pDrcChData->drcMag[band] / 24)
-     */
-
-    if ((drcVal&0x7F) > 0) {
-      FIXP_DBL tParamVal = (drcVal & 0x80) ? -pParams->cut : pParams->boost;
-
-      fact_mantissa[band] =
-        f2Pow( (FIXP_DBL)((INT)fMult(FL2FXCONST_DBL(1.0f/192.0f), tParamVal) * (drcVal&0x7F)),
-                 3+DRC_PARAM_SCALE,
-                &fact_exponent[band] );
-    }
-    }
-
-    fact_mantissa[band]  = fMult(fact_mantissa[band], norm_mantissa);
-    fact_exponent[band] += norm_exponent;
-
-
-    bottom = top;
-
-  }  /* end loop over bands */
-
-
-  /* normalizations */
-  {
-    int res;
-
-    max_mantissa = FL2FXCONST_DBL(0.0f);
-    max_exponent = 0;
-    for (band = 0; band < numBands; band++) {
-      max_mantissa = fixMax(max_mantissa, fact_mantissa[band]);
-      max_exponent = fixMax(max_exponent, fact_exponent[band]);
-    }
-
-    /* left shift factors to gain accurancy */
-    res = CntLeadingZeros(max_mantissa) - 1;
-
-    /* above topmost DRC band gain factor is 1 */
-    if (((pDrcChData->bandTop[numBands-1]+1)<<2) < aacFrameSize) res = 0;
-
-    if (res > 0) {
-      res = fixMin(res, max_exponent);
-      max_exponent -= res;
-
-      for (band = 0; band < numBands; band++) {
-        fact_mantissa[band] <<= res;
-        fact_exponent[band]  -= res;
-      }
-    }
-
-    /* normalize magnitudes to one scale factor */
-    for (band = 0; band < numBands; band++) {
-      if (fact_exponent[band] < max_exponent) {
-        fact_mantissa[band] >>= max_exponent - fact_exponent[band];
-      }
-      if (fact_mantissa[band] != FL2FXCONST_DBL(0.5f)) {
-        modifyBins = 1;
-      }
-    }
-    if (max_exponent != 1) {
-      modifyBins = 1;
-    }
-  }
-
-  /*  apply factor to spectral lines
-   *  short blocks must take care that bands fall on 
-   *  block boundaries!
-   */
-  if (!bSbrPresent)
-  {
-    bottom = 0;
-
-    if (!modifyBins) {
-      /* We don't have to modify the spectral bins because the fractional part of all factors is 0.5.
-         In order to keep accurancy we don't apply the factor but decrease the exponent instead. */
-      max_exponent -= 1;
-    } else
-    {
-      for (band = 0; band < numBands; band++)
-      {
-        top = fixMin((int)( (pDrcChData->bandTop[band]+1)<<2 ), aacFrameSize);   /* ... * DRC_BAND_MULT; */
-
-        for (bin = bottom; bin < top; bin++) {
-          pSpectralCoefficient[bin] = fMult(pSpectralCoefficient[bin], fact_mantissa[band]);
-        }
-
-        bottom = top;
-      }
-    }
-
-    /* above topmost DRC band gain factor is 1 */
-    if (max_exponent > 0) {
-      for (bin = bottom; bin < aacFrameSize; bin+=1) {
-        pSpectralCoefficient[bin] >>= max_exponent;
-      }
-    }
-
-    /* adjust scaling */
-    pSpecScale[0] += max_exponent;
-
-    if (winSeq == EightShortSequence) {
-      int win;
-      for (win = 1; win < 8; win++) {
-        pSpecScale[win] += max_exponent;
-      }
-    }
-  }
-  else {
-    HANDLE_SBRDECODER hSbrDecoder = (HANDLE_SBRDECODER)pSbrDec;
-    UINT numBands = pDrcChData->numBands;
-
-    /* feed factors into SBR decoder for application in QMF domain. */
-    sbrDecoder_drcFeedChannel (
-            hSbrDecoder,
-            ch,
-            numBands,
-            fact_mantissa,
-            max_exponent,
-            pDrcChData->drcInterpolationScheme,
-            winSeq,
-            pDrcChData->bandTop
-          );
-  }
-
-  return;
-}
-
-
-/* 
- * Prepare DRC processing
- */
-int aacDecoder_drcProlog (
-        HANDLE_AAC_DRC  self,
-        HANDLE_FDK_BITSTREAM hBs,
-        CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[],
-        UCHAR  pceInstanceTag,
-        UCHAR  channelMapping[], /* Channel mapping translating drcChannel index to canonical channel index */
-        int    validChannels )
-{
-  int err = 0;
-
-  if (self == NULL) {
-    return -1;
-  }
-
-  if (!self->params.bsDelayEnable)
-  {
-    err = aacDecoder_drcExtractAndMap (
-            self,
-            hBs,
-            pAacDecoderStaticChannelInfo,
-            pceInstanceTag,
-            channelMapping,
-            validChannels );
-  }
-
-  return err;
-}
-
-
-/* 
- * Finalize DRC processing
- */
-int aacDecoder_drcEpilog (
-        HANDLE_AAC_DRC  self,
-        HANDLE_FDK_BITSTREAM hBs,
-        CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[],
-        UCHAR  pceInstanceTag,
-        UCHAR  channelMapping[], /* Channel mapping translating drcChannel index to canonical channel index */
-        int    validChannels )
-{
-  int err = 0;
-
-  if (self == NULL) {
-    return -1;
-  }
-
-  if (self->params.bsDelayEnable)
-  {
-    err = aacDecoder_drcExtractAndMap (
-            self,
-            hBs,
-            pAacDecoderStaticChannelInfo,
-            pceInstanceTag,
-            channelMapping,
-            validChannels );
-  }
-
-  return err;
-}
-