Remove FDK-AAC

1 files changed, 0 insertions, 871 deletions

diff --git a/libAACenc/src/metadata_main.cpp b/libAACenc/src/metadata_main.cpp
deleted file mode 100644
index e920793..0000000
--- a/libAACenc/src/metadata_main.cpp
+++ /dev/null
@@ -1,871 +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
------------------------------------------------------------------------------------------------------------ */
-
-/**********************  Fraunhofer IIS FDK AAC Encoder lib  ******************
-
-   Author(s): V. Bacigalupo
-   Description: Metadata Encoder library interface functions
-
-******************************************************************************/
-
-
-#include "metadata_main.h"
-#include "metadata_compressor.h"
-#include "FDK_bitstream.h"
-#include "FDK_audio.h"
-#include "genericStds.h"
-
-/*----------------- defines ----------------------*/
-#define MAX_DRC_BANDS        (1<<4)
-#define MAX_DRC_CHANNELS        (8)
-#define MAX_DRC_FRAMELEN   (2*1024)
-
-/*--------------- structure definitions --------------------*/
-
-typedef struct AAC_METADATA
-{
-  /* MPEG: Dynamic Range Control */
-  struct {
-    UCHAR                         prog_ref_level_present;
-    SCHAR                         prog_ref_level;
-
-    UCHAR                         dyn_rng_sgn[MAX_DRC_BANDS];
-    UCHAR                         dyn_rng_ctl[MAX_DRC_BANDS];
-
-    UCHAR                         drc_bands_present;
-    UCHAR                         drc_band_incr;
-    UCHAR                         drc_band_top[MAX_DRC_BANDS];
-    UCHAR                         drc_interpolation_scheme;
-    AACENC_METADATA_DRC_PROFILE   drc_profile;
-    INT                           drc_TargetRefLevel;    /* used for Limiter */
-
-    /* excluded channels */
-    UCHAR                         excluded_chns_present;
-    UCHAR                         exclude_mask[2];       /* MAX_NUMBER_CHANNELS/8 */
-  } mpegDrc;
-
-  /* ETSI: addtl ancillary data */
-  struct {
-    /* Heavy Compression */
-    UCHAR                         compression_on;        /* flag, if compression value should be written */
-    UCHAR                         compression_value;     /* compression value */
-    AACENC_METADATA_DRC_PROFILE   comp_profile;
-    INT                           comp_TargetRefLevel;   /* used for Limiter */
-    INT                           timecode_coarse_status;
-    INT                           timecode_fine_status;
-  } etsiAncData;
-
-  SCHAR                         centerMixLevel;          /* center downmix level (0...7, according to table) */
-  SCHAR                         surroundMixLevel;        /* surround downmix level (0...7, according to table) */
-  UCHAR                         WritePCEMixDwnIdx;       /* flag */
-  UCHAR                         DmxLvl_On;               /* flag */
-
-  UCHAR                         dolbySurroundMode;
-
-  UCHAR                         metadataMode;            /* indicate meta data mode in current frame (delay line) */
-
-} AAC_METADATA;
-
-struct FDK_METADATA_ENCODER
-{
-  INT                metadataMode;
-  HDRC_COMP          hDrcComp;
-  AACENC_MetaData    submittedMetaData;
-
-  INT                nAudioDataDelay;
-  INT                nMetaDataDelay;
-  INT                nChannels;
-
-  INT_PCM            audioDelayBuffer[MAX_DRC_CHANNELS*MAX_DRC_FRAMELEN];
-  int                audioDelayIdx;
-
-  AAC_METADATA       metaDataBuffer[3];
-  int                metaDataDelayIdx;
-
-  UCHAR              drcInfoPayload[12];
-  UCHAR              drcDsePayload[8];
-
-  INT                matrix_mixdown_idx;
-  AACENC_EXT_PAYLOAD exPayload[2];
-  INT                nExtensions;
-
-  INT                finalizeMetaData;                   /* Delay switch off by one frame and write default configuration to
-                                                            finalize the metadata setup. */
-};
-
-
-/*---------------- constants -----------------------*/
-static const AACENC_MetaData defaultMetaDataSetup = {
-    AACENC_METADATA_DRC_NONE,
-    AACENC_METADATA_DRC_NONE,
-    -(31<<16),
-    -(31<<16),
-    0,
-    -(31<<16),
-    0,
-    0,
-    0,
-    0,
-    0
-};
-
-static const FIXP_DBL dmxTable[8] = {
-    ((FIXP_DBL)MAXVAL_DBL), FL2FXCONST_DBL(0.841f), FL2FXCONST_DBL(0.707f), FL2FXCONST_DBL(0.596f),
-    FL2FXCONST_DBL(0.500f), FL2FXCONST_DBL(0.422f), FL2FXCONST_DBL(0.355f), FL2FXCONST_DBL(0.000f)
-};
-
-static const UCHAR surmix2matrix_mixdown_idx[8] = {
-    0, 0, 0, 1, 1, 2, 2, 3
-};
-
-
-/*--------------- function declarations --------------------*/
-static FDK_METADATA_ERROR WriteMetadataPayload(
-        const HANDLE_FDK_METADATA_ENCODER hMetaData,
-        const AAC_METADATA * const  pMetadata
-        );
-
-static INT WriteDynamicRangeInfoPayload(
-        const AAC_METADATA* const pMetadata,
-        UCHAR* const              pExtensionPayload
-        );
-
-static INT WriteEtsiAncillaryDataPayload(
-        const AAC_METADATA* const pMetadata,
-        UCHAR* const              pExtensionPayload
-        );
-
-static FDK_METADATA_ERROR CompensateAudioDelay(
-        HANDLE_FDK_METADATA_ENCODER hMetaDataEnc,
-        INT_PCM * const             pAudioSamples,
-        const INT                   nAudioSamples
-        );
-
-static FDK_METADATA_ERROR LoadSubmittedMetadata(
-        const AACENC_MetaData *   const hMetadata,
-        const INT                       nChannels,
-        const INT                       metadataMode,
-        AAC_METADATA * const            pAacMetaData
-        );
-
-static FDK_METADATA_ERROR ProcessCompressor(
-        AAC_METADATA                    *pMetadata,
-        HDRC_COMP                        hDrcComp,
-        const INT_PCM * const            pSamples,
-        const INT                        nSamples
-        );
-
-/*------------- function definitions ----------------*/
-
-static DRC_PROFILE convertProfile(AACENC_METADATA_DRC_PROFILE aacProfile)
-{
-    DRC_PROFILE drcProfile = DRC_NONE;
-
-    switch(aacProfile) {
-      case AACENC_METADATA_DRC_NONE:          drcProfile = DRC_NONE;          break;
-      case AACENC_METADATA_DRC_FILMSTANDARD:  drcProfile = DRC_FILMSTANDARD;  break;
-      case AACENC_METADATA_DRC_FILMLIGHT:     drcProfile = DRC_FILMLIGHT;     break;
-      case AACENC_METADATA_DRC_MUSICSTANDARD: drcProfile = DRC_MUSICSTANDARD; break;
-      case AACENC_METADATA_DRC_MUSICLIGHT:    drcProfile = DRC_MUSICLIGHT;    break;
-      case AACENC_METADATA_DRC_SPEECH:        drcProfile = DRC_SPEECH;        break;
-      default:                                drcProfile = DRC_NONE;          break;
-    }
-    return drcProfile;
-}
-
-
-/* convert dialog normalization to program reference level */
-/* NOTE: this only is correct, if the decoder target level is set to -31dB for line mode / -20dB for RF mode */
-static UCHAR dialnorm2progreflvl(const INT d)
-{
-    return ((UCHAR)FDKmax(0, FDKmin((-d + (1<<13)) >> 14, 127)));
-}
-
-/* convert program reference level to dialog normalization */
-static INT progreflvl2dialnorm(const UCHAR p)
-{
-    return -((INT)(p<<(16-2)));
-}
-
-/* encode downmix levels to Downmixing_levels_MPEG4 */
-static SCHAR encodeDmxLvls(const SCHAR cmixlev, const SCHAR surmixlev)
-{
-    SCHAR dmxLvls = 0;
-    dmxLvls |= 0x80 | (cmixlev << 4); /* center_mix_level_on */
-    dmxLvls |= 0x08 | surmixlev;      /* surround_mix_level_on */
-
-    return dmxLvls;
-}
-
-/* encode AAC DRC gain (ISO/IEC 14496-3:2005  4.5.2.7) */
-static void encodeDynrng(INT gain, UCHAR* const dyn_rng_ctl, UCHAR* const dyn_rng_sgn )
-{
-    if(gain < 0)
-    {
-      *dyn_rng_sgn = 1;
-      gain = -gain;
-    }
-    else
-    {
-      *dyn_rng_sgn = 0;
-    }
-    gain = FDKmin(gain,(127<<14));
-
-    *dyn_rng_ctl = (UCHAR)((gain + (1<<13)) >> 14);
-}
-
-/* decode AAC DRC gain (ISO/IEC 14496-3:2005  4.5.2.7) */
-static INT decodeDynrng(const UCHAR dyn_rng_ctl, const UCHAR dyn_rng_sgn)
-{
-    INT tmp = ((INT)dyn_rng_ctl << (16-2));
-    if (dyn_rng_sgn) tmp = -tmp;
-
-    return tmp;
-}
-
-/* encode AAC compression value (ETSI TS 101 154 page 99) */
-static UCHAR encodeCompr(INT gain)
-{
-    UCHAR x, y;
-    INT tmp;
-
-    /* tmp = (int)((48.164f - gain) / 6.0206f * 15 + 0.5f); */
-    tmp = ((3156476 - gain) * 15 + 197283) / 394566;
-
-    if (tmp >= 240) {
-        return 0xFF;
-    }
-    else if (tmp < 0) {
-        return 0;
-    }
-    else {
-        x = tmp / 15;
-        y = tmp % 15;
-    }
-
-    return (x << 4) | y;
-}
-
-/* decode AAC compression value (ETSI TS 101 154 page 99) */
-static INT decodeCompr(const UCHAR compr)
-{
-    INT gain;
-    SCHAR x = compr >> 4;     /* 4 MSB of compr */
-    UCHAR y = (compr & 0x0F); /* 4 LSB of compr */
-
-    /* gain = (INT)((48.164f - 6.0206f * x - 0.4014f * y) ); */
-    gain = (INT)( scaleValue(((LONG)FL2FXCONST_DBL(6.0206f/128.f)*(8-x) - (LONG)FL2FXCONST_DBL(0.4014f/128.f)*y), -(DFRACT_BITS-1-7-16)) );
-
-    return gain;
-}
-
-
-FDK_METADATA_ERROR FDK_MetadataEnc_Open(
-        HANDLE_FDK_METADATA_ENCODER *phMetaData
-        )
-{
-    FDK_METADATA_ERROR err = METADATA_OK;
-    HANDLE_FDK_METADATA_ENCODER hMetaData = NULL;
-
-    if (phMetaData == NULL) {
-      err = METADATA_INVALID_HANDLE;
-      goto bail;
-    }
-
-    /* allocate memory */
-    hMetaData = (HANDLE_FDK_METADATA_ENCODER) FDKcalloc(1, sizeof(FDK_METADATA_ENCODER) );
-
-    if (hMetaData == NULL) {
-      err = METADATA_MEMORY_ERROR;
-      goto bail;
-    }
-
-    FDKmemclear(hMetaData, sizeof(FDK_METADATA_ENCODER));
-
-    /* Allocate DRC Compressor. */
-    if (FDK_DRC_Generator_Open(&hMetaData->hDrcComp)!=0) {
-      err = METADATA_MEMORY_ERROR;
-      goto bail;
-    }
-
-    /* Return metadata instance */
-    *phMetaData = hMetaData;
-
-    return err;
-
-bail:
-    FDK_MetadataEnc_Close(&hMetaData);
-    return err;
-}
-
-FDK_METADATA_ERROR FDK_MetadataEnc_Close(
-        HANDLE_FDK_METADATA_ENCODER *phMetaData
-        )
-{
-    FDK_METADATA_ERROR err = METADATA_OK;
-
-    if (phMetaData == NULL) {
-      err = METADATA_INVALID_HANDLE;
-      goto bail;
-    }
-
-    if (*phMetaData != NULL) {
-      FDK_DRC_Generator_Close(&(*phMetaData)->hDrcComp);
-      FDKfree(*phMetaData);
-      *phMetaData = NULL;
-    }
-bail:
-    return err;
-}
-
-FDK_METADATA_ERROR FDK_MetadataEnc_Init(
-        HANDLE_FDK_METADATA_ENCODER hMetaData,
-        const INT                   resetStates,
-        const INT                   metadataMode,
-        const INT                   audioDelay,
-        const UINT                  frameLength,
-        const UINT                  sampleRate,
-        const UINT                  nChannels,
-        const CHANNEL_MODE          channelMode,
-        const CHANNEL_ORDER         channelOrder
-        )
-{
-    FDK_METADATA_ERROR err = METADATA_OK;
-    int i, nFrames, delay;
-
-    if (hMetaData==NULL) {
-      err = METADATA_INVALID_HANDLE;
-      goto bail;
-    }
-
-    /* Determine values for delay compensation. */
-    for (nFrames=0, delay=audioDelay-frameLength; delay>0; delay-=frameLength, nFrames++);
-
-    if ( (hMetaData->nChannels>MAX_DRC_CHANNELS) || ((-delay)>MAX_DRC_FRAMELEN) ) {
-      err = METADATA_INIT_ERROR;
-      goto bail;
-    }
-
-    /* Initialize with default setup. */
-    FDKmemcpy(&hMetaData->submittedMetaData, &defaultMetaDataSetup,  sizeof(AACENC_MetaData));
-
-    hMetaData->finalizeMetaData = 0; /* finalize meta data only while on/off switching, else disabled */
-
-    /* Reset delay lines. */
-    if ( resetStates || (hMetaData->nAudioDataDelay!=-delay) || (hMetaData->nChannels!=(INT)nChannels) )
-    {
-      FDKmemclear(hMetaData->audioDelayBuffer, sizeof(hMetaData->audioDelayBuffer));
-      FDKmemclear(hMetaData->metaDataBuffer, sizeof(hMetaData->metaDataBuffer));
-      hMetaData->audioDelayIdx = 0;
-      hMetaData->metaDataDelayIdx = 0;
-    }
-    else {
-      /* Enable meta data. */
-      if ( (hMetaData->metadataMode==0) && (metadataMode!=0) ) {
-        /* disable meta data in all delay lines */
-        for (i=0; i<(int)(sizeof(hMetaData->metaDataBuffer)/sizeof(AAC_METADATA)); i++) {
-          LoadSubmittedMetadata(&hMetaData->submittedMetaData, nChannels, 0, &hMetaData->metaDataBuffer[i]);
-        }
-      }
-
-      /* Disable meta data.*/
-      if ( (hMetaData->metadataMode!=0) && (metadataMode==0) ) {
-        hMetaData->finalizeMetaData = hMetaData->metadataMode;
-      }
-    }
-
-    /* Initialize delay. */
-    hMetaData->nAudioDataDelay = -delay;
-    hMetaData->nMetaDataDelay  = nFrames;
-    hMetaData->nChannels       = nChannels;
-    hMetaData->metadataMode    = metadataMode;
-
-    /* Initialize compressor. */
-    if (metadataMode != 0) {
-        if ( FDK_DRC_Generator_Initialize(
-                         hMetaData->hDrcComp,
-                         DRC_NONE,
-                         DRC_NONE,
-                         frameLength,
-                         sampleRate,
-                         channelMode,
-                         channelOrder,
-                         1) != 0)
-        {
-          err = METADATA_INIT_ERROR;
-        }
-    }
-bail:
-    return err;
-}
-
-static FDK_METADATA_ERROR ProcessCompressor(
-        AAC_METADATA                    *pMetadata,
-        HDRC_COMP                        hDrcComp,
-        const INT_PCM * const            pSamples,
-        const INT                        nSamples
-        )
-{
-    FDK_METADATA_ERROR err = METADATA_OK;
-
-    INT dynrng, compr;
-    DRC_PROFILE profileDrc  = convertProfile(pMetadata->mpegDrc.drc_profile);
-    DRC_PROFILE profileComp = convertProfile(pMetadata->etsiAncData.comp_profile);
-
-    if ( (pMetadata==NULL) || (hDrcComp==NULL) ) {
-      err = METADATA_INVALID_HANDLE;
-      return err;
-    }
-
-    /* first, check if profile is same as last frame
-     * otherwise, update setup */
-    if ( (profileDrc != FDK_DRC_Generator_getDrcProfile(hDrcComp))
-      || (profileComp != FDK_DRC_Generator_getCompProfile(hDrcComp)) )
-    {
-      FDK_DRC_Generator_setDrcProfile(hDrcComp, profileDrc, profileComp);
-    }
-
-    /* Sanity check */
-    if (profileComp == DRC_NONE) {
-      pMetadata->etsiAncData.compression_value = 0x80;  /* to ensure no external values will be written if not configured */
-    }
-
-    /* in case of embedding external values, copy this now (limiter may overwrite them) */
-    dynrng = decodeDynrng(pMetadata->mpegDrc.dyn_rng_ctl[0], pMetadata->mpegDrc.dyn_rng_sgn[0]);
-    compr  = decodeCompr(pMetadata->etsiAncData.compression_value);
-
-    /* Call compressor */
-    if (FDK_DRC_Generator_Calc(hDrcComp,
-                           pSamples,
-                           progreflvl2dialnorm(pMetadata->mpegDrc.prog_ref_level),
-                           pMetadata->mpegDrc.drc_TargetRefLevel,
-                           pMetadata->etsiAncData.comp_TargetRefLevel,
-                           dmxTable[pMetadata->centerMixLevel],
-                           dmxTable[pMetadata->surroundMixLevel],
-                           &dynrng,
-                           &compr) != 0)
-    {
-      err = METADATA_ENCODE_ERROR;
-      goto bail;
-    }
-
-    /* Write DRC values */
-    pMetadata->mpegDrc.drc_band_incr = 0;
-    encodeDynrng(dynrng, pMetadata->mpegDrc.dyn_rng_ctl, pMetadata->mpegDrc.dyn_rng_sgn);
-    pMetadata->etsiAncData.compression_value = encodeCompr(compr);
-
-bail:
-    return err;
-}
-
-FDK_METADATA_ERROR FDK_MetadataEnc_Process(
-        HANDLE_FDK_METADATA_ENCODER      hMetaDataEnc,
-        INT_PCM * const                  pAudioSamples,
-        const INT                        nAudioSamples,
-        const AACENC_MetaData * const    pMetadata,
-        AACENC_EXT_PAYLOAD **            ppMetaDataExtPayload,
-        UINT *                           nMetaDataExtensions,
-        INT *                            matrix_mixdown_idx
-        )
-{
-    FDK_METADATA_ERROR err = METADATA_OK;
-    int metaDataDelayWriteIdx, metaDataDelayReadIdx, metadataMode;
-
-    /* Where to write new meta data info */
-    metaDataDelayWriteIdx = hMetaDataEnc->metaDataDelayIdx;
-
-    /* How to write the data */
-    metadataMode = hMetaDataEnc->metadataMode;
-
-    /* Compensate meta data delay. */
-    hMetaDataEnc->metaDataDelayIdx++;
-    if (hMetaDataEnc->metaDataDelayIdx > hMetaDataEnc->nMetaDataDelay) hMetaDataEnc->metaDataDelayIdx = 0;
-
-    /* Where to read pending meta data info from. */
-    metaDataDelayReadIdx = hMetaDataEnc->metaDataDelayIdx;
-
-    /* Submit new data if available. */
-    if (pMetadata!=NULL) {
-        FDKmemcpy(&hMetaDataEnc->submittedMetaData, pMetadata, sizeof(AACENC_MetaData));
-    }
-
-    /* Write one additional frame with default configuration of meta data. Ensure defined behaviour on decoder side. */
-    if ( (hMetaDataEnc->finalizeMetaData!=0) && (hMetaDataEnc->metadataMode==0)) {
-      FDKmemcpy(&hMetaDataEnc->submittedMetaData, &defaultMetaDataSetup,  sizeof(AACENC_MetaData));
-      metadataMode = hMetaDataEnc->finalizeMetaData;
-      hMetaDataEnc->finalizeMetaData = 0;
-    }
-
-    /* Get last submitted data. */
-    if ( (err = LoadSubmittedMetadata(
-                        &hMetaDataEnc->submittedMetaData,
-                         hMetaDataEnc->nChannels,
-                         metadataMode,
-                        &hMetaDataEnc->metaDataBuffer[metaDataDelayWriteIdx])) != METADATA_OK )
-    {
-        goto bail;
-    }
-
-    /* Calculate compressor if necessary and updata meta data info */
-    if (hMetaDataEnc->metaDataBuffer[metaDataDelayWriteIdx].metadataMode != 0) {
-      if ( (err = ProcessCompressor(
-                        &hMetaDataEnc->metaDataBuffer[metaDataDelayWriteIdx],
-                         hMetaDataEnc->hDrcComp,
-                         pAudioSamples,
-                         nAudioSamples)) != METADATA_OK)
-      {
-        /* Get last submitted data again. */
-        LoadSubmittedMetadata(
-                        &hMetaDataEnc->submittedMetaData,
-                         hMetaDataEnc->nChannels,
-                         metadataMode,
-                        &hMetaDataEnc->metaDataBuffer[metaDataDelayWriteIdx]);
-      }
-    }
-
-    /* Convert Meta Data side info to bitstream data. */
-    if ( (err = WriteMetadataPayload(hMetaDataEnc, &hMetaDataEnc->metaDataBuffer[metaDataDelayReadIdx])) != METADATA_OK ) {
-      goto bail;
-    }
-
-    /* Assign meta data to output */
-    *ppMetaDataExtPayload = hMetaDataEnc->exPayload;
-    *nMetaDataExtensions  = hMetaDataEnc->nExtensions;
-    *matrix_mixdown_idx   = hMetaDataEnc->matrix_mixdown_idx;
-
-bail:
-    /* Compensate audio delay, reset err status. */
-    err = CompensateAudioDelay(hMetaDataEnc, pAudioSamples, nAudioSamples);
-
-    return err;
-}
-
-
-static FDK_METADATA_ERROR CompensateAudioDelay(
-        HANDLE_FDK_METADATA_ENCODER hMetaDataEnc,
-        INT_PCM * const             pAudioSamples,
-        const INT                   nAudioSamples
-        )
-{
-    FDK_METADATA_ERROR err = METADATA_OK;
-
-    if (hMetaDataEnc->nAudioDataDelay) {
-      int i, delaySamples = hMetaDataEnc->nAudioDataDelay*hMetaDataEnc->nChannels;
-
-      for (i = 0; i < nAudioSamples; i++) {
-        INT_PCM tmp = pAudioSamples[i];
-        pAudioSamples[i] = hMetaDataEnc->audioDelayBuffer[hMetaDataEnc->audioDelayIdx];
-        hMetaDataEnc->audioDelayBuffer[hMetaDataEnc->audioDelayIdx] = tmp;
-
-        hMetaDataEnc->audioDelayIdx++;
-        if (hMetaDataEnc->audioDelayIdx >= delaySamples) hMetaDataEnc->audioDelayIdx = 0;
-      }
-    }
-
-    return err;
-}
-
-/*-----------------------------------------------------------------------------
-
-  functionname: WriteMetadataPayload
-  description:  fills anc data and extension payload
-  returns:      Error status
-
- ------------------------------------------------------------------------------*/
-static FDK_METADATA_ERROR WriteMetadataPayload(
-        const HANDLE_FDK_METADATA_ENCODER hMetaData,
-        const AAC_METADATA * const        pMetadata
-        )
-{
-    FDK_METADATA_ERROR err = METADATA_OK;
-
-    if ( (hMetaData==NULL) || (pMetadata==NULL) ) {
-        err = METADATA_INVALID_HANDLE;
-        goto bail;
-    }
-
-    hMetaData->nExtensions = 0;
-    hMetaData->matrix_mixdown_idx = -1;
-
-    /* AAC-DRC */
-    if (pMetadata->metadataMode != 0)
-    {
-        hMetaData->exPayload[hMetaData->nExtensions].pData               = hMetaData->drcInfoPayload;
-        hMetaData->exPayload[hMetaData->nExtensions].dataType            = EXT_DYNAMIC_RANGE;
-        hMetaData->exPayload[hMetaData->nExtensions].associatedChElement = -1;
-
-        hMetaData->exPayload[hMetaData->nExtensions].dataSize =
-              WriteDynamicRangeInfoPayload(pMetadata, hMetaData->exPayload[hMetaData->nExtensions].pData);
-
-        hMetaData->nExtensions++;
-
-        /* Matrix Mixdown Coefficient in PCE */
-        if (pMetadata->WritePCEMixDwnIdx) {
-            hMetaData->matrix_mixdown_idx = surmix2matrix_mixdown_idx[pMetadata->surroundMixLevel];
-        }
-
-        /* ETSI TS 101 154 (DVB) - MPEG4 ancillary_data() */
-        if (pMetadata->metadataMode == 2) /* MP4_METADATA_MPEG_ETSI */
-        {
-            hMetaData->exPayload[hMetaData->nExtensions].pData               = hMetaData->drcDsePayload;
-            hMetaData->exPayload[hMetaData->nExtensions].dataType            = EXT_DATA_ELEMENT;
-            hMetaData->exPayload[hMetaData->nExtensions].associatedChElement = -1;
-
-            hMetaData->exPayload[hMetaData->nExtensions].dataSize =
-                 WriteEtsiAncillaryDataPayload(pMetadata,hMetaData->exPayload[hMetaData->nExtensions].pData);
-
-            hMetaData->nExtensions++;
-        } /* metadataMode == 2 */
-
-    } /* metadataMode != 0 */
-
-bail:
-    return err;
-}
-
-static INT WriteDynamicRangeInfoPayload(
-        const AAC_METADATA* const pMetadata,
-        UCHAR* const              pExtensionPayload
-        )
-{
-    const INT pce_tag_present = 0;        /* yet fixed setting! */
-    const INT prog_ref_lev_res_bits = 0;
-    INT i, drc_num_bands = 1;
-
-    FDK_BITSTREAM bsWriter;
-    FDKinitBitStream(&bsWriter, pExtensionPayload, 16, 0, BS_WRITER);
-
-    /* dynamic_range_info() */
-    FDKwriteBits(&bsWriter, pce_tag_present, 1);                                         /* pce_tag_present */
-    if (pce_tag_present) {
-      FDKwriteBits(&bsWriter, 0x0, 4);                                                   /* pce_instance_tag */
-      FDKwriteBits(&bsWriter, 0x0, 4);                                                   /* drc_tag_reserved_bits */
-   }
-
-    /* Exclude channels */
-    FDKwriteBits(&bsWriter, (pMetadata->mpegDrc.excluded_chns_present) ? 1 : 0, 1);      /* excluded_chns_present*/
-
-    /* Multiband DRC */
-    FDKwriteBits(&bsWriter, (pMetadata->mpegDrc.drc_bands_present) ? 1 : 0, 1);          /* drc_bands_present */
-    if (pMetadata->mpegDrc.drc_bands_present)
-    {
-      FDKwriteBits(&bsWriter, pMetadata->mpegDrc.drc_band_incr, 4);                      /* drc_band_incr */
-      FDKwriteBits(&bsWriter, pMetadata->mpegDrc.drc_interpolation_scheme, 4);           /* drc_interpolation_scheme */
-      drc_num_bands += pMetadata->mpegDrc.drc_band_incr;
-      for (i=0; i<drc_num_bands; i++) {
-        FDKwriteBits(&bsWriter, pMetadata->mpegDrc.drc_band_top[i], 8);                  /* drc_band_top */
-      }
-    }
-
-    /* Program Reference Level */
-    FDKwriteBits(&bsWriter, pMetadata->mpegDrc.prog_ref_level_present, 1);               /* prog_ref_level_present */
-    if (pMetadata->mpegDrc.prog_ref_level_present)
-    {
-      FDKwriteBits(&bsWriter, pMetadata->mpegDrc.prog_ref_level, 7);                     /* prog_ref_level */
-      FDKwriteBits(&bsWriter, prog_ref_lev_res_bits, 1);                                 /* prog_ref_level_reserved_bits */
-    }
-
-    /* DRC Values */
-    for (i=0; i<drc_num_bands; i++) {
-      FDKwriteBits(&bsWriter, (pMetadata->mpegDrc.dyn_rng_sgn[i]) ? 1 : 0, 1);           /* dyn_rng_sgn[ */
-      FDKwriteBits(&bsWriter, pMetadata->mpegDrc.dyn_rng_ctl[i], 7);                     /* dyn_rng_ctl */
-    }
-
-    /* return number of valid bits in extension payload. */
-    return FDKgetValidBits(&bsWriter);
-}
-
-static INT WriteEtsiAncillaryDataPayload(
-        const AAC_METADATA* const pMetadata,
-        UCHAR* const              pExtensionPayload
-        )
-{
-    FDK_BITSTREAM bsWriter;
-    FDKinitBitStream(&bsWriter, pExtensionPayload, 16, 0, BS_WRITER);
-
-    /* ancillary_data_sync */
-    FDKwriteBits(&bsWriter, 0xBC, 8);
-
-    /* bs_info */
-    FDKwriteBits(&bsWriter, 0x3, 2);                                                     /* mpeg_audio_type */
-    FDKwriteBits(&bsWriter, pMetadata->dolbySurroundMode, 2);                            /* dolby_surround_mode */
-    FDKwriteBits(&bsWriter, 0x0, 4);                                                     /* reserved */
-
-    /* ancillary_data_status */
-    FDKwriteBits(&bsWriter, 0, 3);                                                       /* 3 bit Reserved, set to "0" */
-    FDKwriteBits(&bsWriter, (pMetadata->DmxLvl_On) ? 1 : 0, 1);                          /* downmixing_levels_MPEG4_status */
-    FDKwriteBits(&bsWriter, 0, 1);                                                       /* Reserved, set to "0" */
-    FDKwriteBits(&bsWriter, (pMetadata->etsiAncData.compression_on) ? 1 : 0, 1);         /* audio_coding_mode_and_compression status */
-    FDKwriteBits(&bsWriter, (pMetadata->etsiAncData.timecode_coarse_status) ? 1 : 0, 1); /* coarse_grain_timecode_status */
-    FDKwriteBits(&bsWriter, (pMetadata->etsiAncData.timecode_fine_status) ? 1 : 0, 1);   /* fine_grain_timecode_status */
-
-    /* downmixing_levels_MPEG4_status */
-    if (pMetadata->DmxLvl_On) {
-      FDKwriteBits(&bsWriter, encodeDmxLvls(pMetadata->centerMixLevel, pMetadata->surroundMixLevel), 8);
-    }
-
-    /* audio_coding_mode_and_compression_status */
-    if (pMetadata->etsiAncData.compression_on) {
-      FDKwriteBits(&bsWriter, 0x01, 8);                                                  /* audio coding mode */
-      FDKwriteBits(&bsWriter, pMetadata->etsiAncData.compression_value, 8);              /* compression value */
-    }
-
-    /* grain-timecode coarse/fine */
-    if (pMetadata->etsiAncData.timecode_coarse_status) {
-      FDKwriteBits(&bsWriter, 0x0, 16);                                                  /* not yet supported */
-    }
-
-    if (pMetadata->etsiAncData.timecode_fine_status) {
-      FDKwriteBits(&bsWriter, 0x0, 16);                                                  /* not yet supported */
-    }
-
-    return FDKgetValidBits(&bsWriter);
-}
-
-
-static FDK_METADATA_ERROR LoadSubmittedMetadata(
-        const AACENC_MetaData * const   hMetadata,
-        const INT                       nChannels,
-        const INT                       metadataMode,
-        AAC_METADATA * const            pAacMetaData
-        )
-{
-    FDK_METADATA_ERROR err = METADATA_OK;
-
-    if (pAacMetaData==NULL) {
-      err = METADATA_INVALID_HANDLE;
-    }
-    else {
-      /* init struct */
-      FDKmemclear(pAacMetaData, sizeof(AAC_METADATA));
-
-      if (hMetadata!=NULL) {
-        /* convert data */
-        pAacMetaData->mpegDrc.drc_profile            = hMetadata->drc_profile;
-        pAacMetaData->etsiAncData.comp_profile       = hMetadata->comp_profile;
-        pAacMetaData->mpegDrc.drc_TargetRefLevel     = hMetadata->drc_TargetRefLevel;
-        pAacMetaData->etsiAncData.comp_TargetRefLevel= hMetadata->comp_TargetRefLevel;
-        pAacMetaData->mpegDrc.prog_ref_level_present = hMetadata->prog_ref_level_present;
-        pAacMetaData->mpegDrc.prog_ref_level         = dialnorm2progreflvl(hMetadata->prog_ref_level);
-
-        pAacMetaData->centerMixLevel                 = hMetadata->centerMixLevel;
-        pAacMetaData->surroundMixLevel               = hMetadata->surroundMixLevel;
-        pAacMetaData->WritePCEMixDwnIdx              = hMetadata->PCE_mixdown_idx_present;
-        pAacMetaData->DmxLvl_On                      = hMetadata->ETSI_DmxLvl_present;
-
-        pAacMetaData->etsiAncData.compression_on = 1;
-
-
-        if (nChannels == 2) {
-          pAacMetaData->dolbySurroundMode = hMetadata->dolbySurroundMode;     /* dolby_surround_mode */
-        } else {
-          pAacMetaData->dolbySurroundMode = 0;
-        }
-
-        pAacMetaData->etsiAncData.timecode_coarse_status = 0; /* not yet supported - attention: Update GetEstMetadataBytesPerFrame() if enable this! */
-        pAacMetaData->etsiAncData.timecode_fine_status   = 0; /* not yet supported - attention: Update GetEstMetadataBytesPerFrame() if enable this! */
-
-        pAacMetaData->metadataMode = metadataMode;
-      }
-      else {
-        pAacMetaData->metadataMode = 0;                      /* there is no configuration available */
-      }
-    }
-
-    return err;
-}
-
-INT FDK_MetadataEnc_GetDelay(
-        HANDLE_FDK_METADATA_ENCODER hMetadataEnc
-        )
-{
-    INT delay = 0;
-
-    if (hMetadataEnc!=NULL) {
-        delay = hMetadataEnc->nAudioDataDelay;
-    }
-
-    return delay;
-}
-
-