Include patched FDK-AAC in the repository

The initial idea was to get the DAB+ patch into upstream, but since
that follows the android source releases, there is no place for a custom
DAB+ patch there.

So instead of having to maintain a patched fdk-aac that has to have the
same .so version as the distribution package on which it is installed,
we prefer having a separate fdk-aac-dab library to avoid collision.

At that point, there's no reason to keep fdk-aac in a separate
repository, as odr-audioenc is the only tool that needs DAB+ encoding
support. Including it here simplifies installation, and makes it
consistent with toolame-dab, also shipped in this repository.

DAB+ decoding support (needed by ODR-SourceCompanion, dablin, etisnoop,
welle.io and others) can be done using upstream FDK-AAC.

1 files changed, 529 insertions, 0 deletions

diff --git a/fdk-aac/libAACenc/src/mps_main.cpp b/fdk-aac/libAACenc/src/mps_main.cpp
new file mode 100644
index 0000000..1048228
--- /dev/null
+++ b/fdk-aac/libAACenc/src/mps_main.cpp
@@ -0,0 +1,529 @@
+/* -----------------------------------------------------------------------------
+Software License for The Fraunhofer FDK AAC Codec Library for Android
+
+© Copyright  1995 - 2018 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
+----------------------------------------------------------------------------- */
+
+/**************************** AAC encoder library ******************************
+
+   Author(s):   Markus Lohwasser
+
+   Description: Mpeg Surround library interface functions
+
+*******************************************************************************/
+
+/* Includes ******************************************************************/
+#include "mps_main.h"
+#include "sacenc_lib.h"
+
+/* Data Types ****************************************************************/
+struct MPS_ENCODER {
+  HANDLE_MP4SPACE_ENCODER hSacEncoder;
+
+  AUDIO_OBJECT_TYPE audioObjectType;
+
+  FDK_bufDescr inBufDesc;
+  FDK_bufDescr outBufDesc;
+  SACENC_InArgs inargs;
+  SACENC_OutArgs outargs;
+
+  void *pInBuffer[1];
+  UINT pInBufferSize[1];
+  UINT pInBufferElSize[1];
+  UINT pInBufferType[1];
+
+  void *pOutBuffer[2];
+  UINT pOutBufferSize[2];
+  UINT pOutBufferElSize[2];
+  UINT pOutBufferType[2];
+
+  UCHAR sacOutBuffer[1024]; /* Worst case memory consumption for ELDv2: 768
+                               bytes => 6144 bits (Core + SBR + MPS) */
+};
+
+struct MPS_CONFIG_TAB {
+  AUDIO_OBJECT_TYPE audio_object_type;
+  CHANNEL_MODE channel_mode;
+  ULONG sbr_ratio;
+  ULONG sampling_rate;
+  ULONG bitrate_min;
+  ULONG bitrate_max;
+};
+
+/* Constants *****************************************************************/
+static const MPS_CONFIG_TAB mpsConfigTab[] = {
+    {AOT_ER_AAC_ELD, MODE_212, 0, 16000, 16000, 39999},
+    {AOT_ER_AAC_ELD, MODE_212, 0, 22050, 16000, 49999},
+    {AOT_ER_AAC_ELD, MODE_212, 0, 24000, 16000, 61999},
+    {AOT_ER_AAC_ELD, MODE_212, 0, 32000, 20000, 84999},
+    {AOT_ER_AAC_ELD, MODE_212, 0, 44100, 50000, 192000},
+    {AOT_ER_AAC_ELD, MODE_212, 0, 48000, 62000, 192000},
+
+    {AOT_ER_AAC_ELD, MODE_212, 1, 16000, 18000, 31999},
+    {AOT_ER_AAC_ELD, MODE_212, 1, 22050, 18000, 31999},
+    {AOT_ER_AAC_ELD, MODE_212, 1, 24000, 20000, 64000},
+
+    {AOT_ER_AAC_ELD, MODE_212, 2, 32000, 18000, 64000},
+    {AOT_ER_AAC_ELD, MODE_212, 2, 44100, 21000, 64000},
+    {AOT_ER_AAC_ELD, MODE_212, 2, 48000, 26000, 64000}
+
+};
+
+/* Function / Class Declarations *********************************************/
+
+/* Function / Class Definition ***********************************************/
+static INT FDK_MpegsEnc_WriteFrameHeader(HANDLE_MPS_ENCODER hMpsEnc,
+                                         UCHAR *const pOutputBuffer,
+                                         const int outputBufferSize);
+
+MPS_ENCODER_ERROR FDK_MpegsEnc_Open(HANDLE_MPS_ENCODER *phMpsEnc) {
+  MPS_ENCODER_ERROR error = MPS_ENCODER_OK;
+  HANDLE_MPS_ENCODER hMpsEnc = NULL;
+
+  if (phMpsEnc == NULL) {
+    error = MPS_ENCODER_INVALID_HANDLE;
+    goto bail;
+  }
+
+  if (NULL ==
+      (hMpsEnc = (HANDLE_MPS_ENCODER)FDKcalloc(1, sizeof(MPS_ENCODER)))) {
+    error = MPS_ENCODER_MEMORY_ERROR;
+    goto bail;
+  }
+  FDKmemclear(hMpsEnc, sizeof(MPS_ENCODER));
+
+  if (SACENC_OK != FDK_sacenc_open(&hMpsEnc->hSacEncoder)) {
+    error = MPS_ENCODER_MEMORY_ERROR;
+    goto bail;
+  }
+
+  /* Return mps encoder instance */
+  *phMpsEnc = hMpsEnc;
+
+bail:
+  if (error != MPS_ENCODER_OK) {
+    FDK_MpegsEnc_Close(&hMpsEnc);
+  }
+  return error;
+}
+
+MPS_ENCODER_ERROR FDK_MpegsEnc_Close(HANDLE_MPS_ENCODER *phMpsEnc) {
+  MPS_ENCODER_ERROR error = MPS_ENCODER_OK;
+
+  if (phMpsEnc == NULL) {
+    error = MPS_ENCODER_INVALID_HANDLE;
+    goto bail;
+  }
+
+  if (*phMpsEnc != NULL) {
+    FDK_sacenc_close(&(*phMpsEnc)->hSacEncoder);
+    FDKfree(*phMpsEnc);
+    *phMpsEnc = NULL;
+  }
+bail:
+  return error;
+}
+
+MPS_ENCODER_ERROR FDK_MpegsEnc_Init(HANDLE_MPS_ENCODER hMpsEnc,
+                                    const AUDIO_OBJECT_TYPE audioObjectType,
+                                    const UINT samplingrate, const UINT bitrate,
+                                    const UINT sbrRatio, const UINT framelength,
+                                    const UINT inputBufferSizePerChannel,
+                                    const UINT coreCoderDelay) {
+  MPS_ENCODER_ERROR error = MPS_ENCODER_OK;
+  const UINT fs_low = 27713;  /* low MPS sampling frequencies */
+  const UINT fs_high = 55426; /* high MPS sampling frequencies */
+  UINT nTimeSlots = 0, nQmfBandsLd = 0;
+
+  if (hMpsEnc == NULL) {
+    error = MPS_ENCODER_INVALID_HANDLE;
+    goto bail;
+  }
+
+  /* Combine MPS with SBR only if the number of QMF band fits together.*/
+  switch (sbrRatio) {
+    case 1: /* downsampled sbr - 32 QMF bands required */
+      if (!(samplingrate < fs_low)) {
+        error = MPS_ENCODER_INIT_ERROR;
+        goto bail;
+      }
+      break;
+    case 2: /* dualrate - 64 QMF bands required */
+      if (!((samplingrate >= fs_low) && (samplingrate < fs_high))) {
+        error = MPS_ENCODER_INIT_ERROR;
+        goto bail;
+      }
+      break;
+    case 0:
+    default:; /* time interface - no samplingrate restriction */
+  }
+
+  /* 32  QMF-Bands  ( fs < 27713 )
+   * 64  QMF-Bands  ( 27713 >= fs <= 55426 )
+   * 128 QMF-Bands  ( fs > 55426 )
+   */
+  nQmfBandsLd =
+      (samplingrate < fs_low) ? 5 : ((samplingrate > fs_high) ? 7 : 6);
+  nTimeSlots = framelength >> nQmfBandsLd;
+
+  /* check if number of qmf bands is usable for given framelength */
+  if (framelength != (nTimeSlots << nQmfBandsLd)) {
+    error = MPS_ENCODER_INIT_ERROR;
+    goto bail;
+  }
+
+  /* is given bitrate intended to be supported */
+  if ((INT)bitrate != FDK_MpegsEnc_GetClosestBitRate(audioObjectType, MODE_212,
+                                                     samplingrate, sbrRatio,
+                                                     bitrate)) {
+    error = MPS_ENCODER_INIT_ERROR;
+    goto bail;
+  }
+
+  /* init SAC library */
+  switch (audioObjectType) {
+    case AOT_ER_AAC_ELD: {
+      const UINT noInterFrameCoding = 0;
+
+      if ((SACENC_OK !=
+           FDK_sacenc_setParam(hMpsEnc->hSacEncoder, SACENC_LOWDELAY,
+                               (noInterFrameCoding == 1) ? 1 : 2)) ||
+          (SACENC_OK != FDK_sacenc_setParam(hMpsEnc->hSacEncoder,
+                                            SACENC_ENC_MODE, SACENC_212)) ||
+          (SACENC_OK != FDK_sacenc_setParam(hMpsEnc->hSacEncoder,
+                                            SACENC_SAMPLERATE, samplingrate)) ||
+          (SACENC_OK != FDK_sacenc_setParam(hMpsEnc->hSacEncoder,
+                                            SACENC_FRAME_TIME_SLOTS,
+                                            nTimeSlots)) ||
+          (SACENC_OK != FDK_sacenc_setParam(hMpsEnc->hSacEncoder,
+                                            SACENC_PARAM_BANDS,
+                                            SACENC_BANDS_15)) ||
+          (SACENC_OK !=
+           FDK_sacenc_setParam(hMpsEnc->hSacEncoder, SACENC_TIME_DOM_DMX, 2)) ||
+          (SACENC_OK !=
+           FDK_sacenc_setParam(hMpsEnc->hSacEncoder, SACENC_COARSE_QUANT, 0)) ||
+          (SACENC_OK != FDK_sacenc_setParam(hMpsEnc->hSacEncoder,
+                                            SACENC_QUANT_MODE,
+                                            SACENC_QUANTMODE_FINE)) ||
+          (SACENC_OK != FDK_sacenc_setParam(hMpsEnc->hSacEncoder,
+                                            SACENC_TIME_ALIGNMENT, 0)) ||
+          (SACENC_OK != FDK_sacenc_setParam(hMpsEnc->hSacEncoder,
+                                            SACENC_INDEPENDENCY_FACTOR, 20))) {
+        error = MPS_ENCODER_INIT_ERROR;
+        goto bail;
+      }
+      break;
+    }
+    default:
+      error = MPS_ENCODER_INIT_ERROR;
+      goto bail;
+  }
+
+  if (SACENC_OK != FDK_sacenc_init(hMpsEnc->hSacEncoder, coreCoderDelay)) {
+    error = MPS_ENCODER_INIT_ERROR;
+  }
+
+  hMpsEnc->audioObjectType = audioObjectType;
+
+  hMpsEnc->inBufDesc.ppBase = (void **)&hMpsEnc->pInBuffer;
+  hMpsEnc->inBufDesc.pBufSize = hMpsEnc->pInBufferSize;
+  hMpsEnc->inBufDesc.pEleSize = hMpsEnc->pInBufferElSize;
+  hMpsEnc->inBufDesc.pBufType = hMpsEnc->pInBufferType;
+  hMpsEnc->inBufDesc.numBufs = 1;
+
+  hMpsEnc->outBufDesc.ppBase = (void **)&hMpsEnc->pOutBuffer;
+  hMpsEnc->outBufDesc.pBufSize = hMpsEnc->pOutBufferSize;
+  hMpsEnc->outBufDesc.pEleSize = hMpsEnc->pOutBufferElSize;
+  hMpsEnc->outBufDesc.pBufType = hMpsEnc->pOutBufferType;
+  hMpsEnc->outBufDesc.numBufs = 2;
+
+  hMpsEnc->pInBuffer[0] = NULL;
+  hMpsEnc->pInBufferSize[0] = 0;
+  hMpsEnc->pInBufferElSize[0] = sizeof(INT_PCM);
+  hMpsEnc->pInBufferType[0] = (FDK_BUF_TYPE_INPUT | FDK_BUF_TYPE_PCM_DATA);
+
+  hMpsEnc->pOutBuffer[0] = NULL;
+  hMpsEnc->pOutBufferSize[0] = 0;
+  hMpsEnc->pOutBufferElSize[0] = sizeof(INT_PCM);
+  hMpsEnc->pOutBufferType[0] = (FDK_BUF_TYPE_OUTPUT | FDK_BUF_TYPE_PCM_DATA);
+
+  hMpsEnc->pOutBuffer[1] = NULL;
+  hMpsEnc->pOutBufferSize[1] = 0;
+  hMpsEnc->pOutBufferElSize[1] = sizeof(UCHAR);
+  hMpsEnc->pOutBufferType[1] = (FDK_BUF_TYPE_OUTPUT | FDK_BUF_TYPE_BS_DATA);
+
+  hMpsEnc->inargs.isInputInterleaved = 0;
+  hMpsEnc->inargs.inputBufferSizePerChannel = inputBufferSizePerChannel;
+
+bail:
+  return error;
+}
+
+MPS_ENCODER_ERROR FDK_MpegsEnc_Process(HANDLE_MPS_ENCODER hMpsEnc,
+                                       INT_PCM *const pAudioSamples,
+                                       const INT nAudioSamples,
+                                       AACENC_EXT_PAYLOAD *pMpsExtPayload) {
+  MPS_ENCODER_ERROR error = MPS_ENCODER_OK;
+
+  if (hMpsEnc == NULL) {
+    error = MPS_ENCODER_INVALID_HANDLE;
+  } else {
+    int sacHeaderFlag = 1;
+    int sacOutBufferOffset = 0;
+
+    /* In case of eld the ssc is explicit and doesn't need to be inband */
+    if (hMpsEnc->audioObjectType == AOT_ER_AAC_ELD) {
+      sacHeaderFlag = 0;
+    }
+
+    /* 4 bits nibble after extension type */
+    hMpsEnc->sacOutBuffer[0] = (sacHeaderFlag == 0) ? 0x3 : 0x7;
+    sacOutBufferOffset += 1;
+
+    if (sacHeaderFlag) {
+      sacOutBufferOffset += FDK_MpegsEnc_WriteFrameHeader(
+          hMpsEnc, &hMpsEnc->sacOutBuffer[sacOutBufferOffset],
+          sizeof(hMpsEnc->sacOutBuffer) - sacOutBufferOffset);
+    }
+
+    /* Register input and output buffer. */
+    hMpsEnc->pInBuffer[0] = (void *)pAudioSamples;
+    hMpsEnc->inargs.nInputSamples = nAudioSamples;
+
+    hMpsEnc->pOutBuffer[0] = (void *)pAudioSamples;
+    hMpsEnc->pOutBufferSize[0] = sizeof(INT_PCM) * nAudioSamples / 2;
+
+    hMpsEnc->pOutBuffer[1] = (void *)&hMpsEnc->sacOutBuffer[sacOutBufferOffset];
+    hMpsEnc->pOutBufferSize[1] =
+        sizeof(hMpsEnc->sacOutBuffer) - sacOutBufferOffset;
+
+    /* encode SAC frame */
+    if (SACENC_OK != FDK_sacenc_encode(hMpsEnc->hSacEncoder,
+                                       &hMpsEnc->inBufDesc,
+                                       &hMpsEnc->outBufDesc, &hMpsEnc->inargs,
+                                       &hMpsEnc->outargs)) {
+      error = MPS_ENCODER_ENCODE_ERROR;
+      goto bail;
+    }
+
+    /* export MPS payload */
+    pMpsExtPayload->pData = (UCHAR *)hMpsEnc->sacOutBuffer;
+    pMpsExtPayload->dataSize =
+        hMpsEnc->outargs.nOutputBits + 8 * (sacOutBufferOffset - 1);
+    pMpsExtPayload->dataType = EXT_LDSAC_DATA;
+    pMpsExtPayload->associatedChElement = -1;
+  }
+
+bail:
+  return error;
+}
+
+INT FDK_MpegsEnc_WriteSpatialSpecificConfig(HANDLE_MPS_ENCODER hMpsEnc,
+                                            HANDLE_FDK_BITSTREAM hBs) {
+  INT sscBits = 0;
+
+  if (NULL != hMpsEnc) {
+    MP4SPACEENC_INFO mp4SpaceEncoderInfo;
+    FDK_sacenc_getInfo(hMpsEnc->hSacEncoder, &mp4SpaceEncoderInfo);
+
+    if (hBs != NULL) {
+      int i;
+      int writtenBits = 0;
+      for (i = 0; i<mp4SpaceEncoderInfo.pSscBuf->nSscSizeBits>> 3; i++) {
+        FDKwriteBits(hBs, mp4SpaceEncoderInfo.pSscBuf->pSsc[i], 8);
+        writtenBits += 8;
+      }
+      FDKwriteBits(hBs, mp4SpaceEncoderInfo.pSscBuf->pSsc[i],
+                   mp4SpaceEncoderInfo.pSscBuf->nSscSizeBits - writtenBits);
+    } /* hBS */
+
+    sscBits = mp4SpaceEncoderInfo.pSscBuf->nSscSizeBits;
+
+  } /* valid hMpsEnc */
+
+  return sscBits;
+}
+
+static INT FDK_MpegsEnc_WriteFrameHeader(HANDLE_MPS_ENCODER hMpsEnc,
+                                         UCHAR *const pOutputBuffer,
+                                         const int outputBufferSize) {
+  const int sacTimeAlignFlag = 0;
+
+  /* Initialize variables */
+  int numBits = 0;
+
+  if ((NULL != hMpsEnc) && (NULL != pOutputBuffer)) {
+    UINT alignAnchor, cnt;
+    FDK_BITSTREAM Bs;
+    FDKinitBitStream(&Bs, pOutputBuffer, outputBufferSize, 0, BS_WRITER);
+
+    /* Calculate SSC length information */
+    cnt = (FDK_MpegsEnc_WriteSpatialSpecificConfig(hMpsEnc, NULL) + 7) >> 3;
+
+    /* Write SSC */
+    FDKwriteBits(&Bs, sacTimeAlignFlag, 1);
+
+    if (cnt < 127) {
+      FDKwriteBits(&Bs, cnt, 7);
+    } else {
+      FDKwriteBits(&Bs, 127, 7);
+      FDKwriteBits(&Bs, cnt - 127, 16);
+    }
+
+    alignAnchor = FDKgetValidBits(&Bs);
+    FDK_MpegsEnc_WriteSpatialSpecificConfig(hMpsEnc, &Bs);
+    FDKbyteAlign(&Bs, alignAnchor); /* bsFillBits */
+
+    if (sacTimeAlignFlag) {
+      FDK_ASSERT(1); /* time alignment not supported */
+    }
+
+    numBits = FDKgetValidBits(&Bs);
+  } /* valid handle */
+
+  return ((numBits + 7) >> 3);
+}
+
+INT FDK_MpegsEnc_GetClosestBitRate(const AUDIO_OBJECT_TYPE audioObjectType,
+                                   const CHANNEL_MODE channelMode,
+                                   const UINT samplingrate, const UINT sbrRatio,
+                                   const UINT bitrate) {
+  unsigned int i;
+  int targetBitrate = -1;
+
+  for (i = 0; i < sizeof(mpsConfigTab) / sizeof(MPS_CONFIG_TAB); i++) {
+    if ((mpsConfigTab[i].audio_object_type == audioObjectType) &&
+        (mpsConfigTab[i].channel_mode == channelMode) &&
+        (mpsConfigTab[i].sbr_ratio == sbrRatio) &&
+        (mpsConfigTab[i].sampling_rate == samplingrate)) {
+      targetBitrate = fMin(fMax(bitrate, mpsConfigTab[i].bitrate_min),
+                           mpsConfigTab[i].bitrate_max);
+    }
+  }
+
+  return targetBitrate;
+}
+
+INT FDK_MpegsEnc_GetDelay(HANDLE_MPS_ENCODER hMpsEnc) {
+  INT delay = 0;
+
+  if (NULL != hMpsEnc) {
+    MP4SPACEENC_INFO mp4SpaceEncoderInfo;
+    FDK_sacenc_getInfo(hMpsEnc->hSacEncoder, &mp4SpaceEncoderInfo);
+    delay = mp4SpaceEncoderInfo.nCodecDelay;
+  }
+
+  return delay;
+}
+
+INT FDK_MpegsEnc_GetDecDelay(HANDLE_MPS_ENCODER hMpsEnc) {
+  INT delay = 0;
+
+  if (NULL != hMpsEnc) {
+    MP4SPACEENC_INFO mp4SpaceEncoderInfo;
+    FDK_sacenc_getInfo(hMpsEnc->hSacEncoder, &mp4SpaceEncoderInfo);
+    delay = mp4SpaceEncoderInfo.nDecoderDelay;
+  }
+
+  return delay;
+}
+
+MPS_ENCODER_ERROR FDK_MpegsEnc_GetLibInfo(LIB_INFO *info) {
+  MPS_ENCODER_ERROR error = MPS_ENCODER_OK;
+
+  if (NULL == info) {
+    error = MPS_ENCODER_INVALID_HANDLE;
+  } else if (SACENC_OK != FDK_sacenc_getLibInfo(info)) {
+    error = MPS_ENCODER_INIT_ERROR;
+  }
+
+  return error;
+}