openh264/codec/encoder/core/inc/param_svc.h

/*!
 * \copy
 *     Copyright (c)  2009-2013, Cisco Systems
 *     All rights reserved.
 *
 *     Redistribution and use in source and binary forms, with or without
 *     modification, are permitted provided that the following conditions
 *     are met:
 *
 *        * Redistributions of source code must retain the above copyright
 *          notice, this list of conditions and the following disclaimer.
 *
 *        * Redistributions in binary form must reproduce the above copyright
 *          notice, this list of conditions and the following disclaimer in
 *          the documentation and/or other materials provided with the
 *          distribution.
 *
 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 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 OR OTHERWISE) ARISING IN
 *     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *     POSSIBILITY OF SUCH DAMAGE.
 *
 *
 * \file	param_svc.h
 *
 * \brief	Configurable parameters in H.264/SVC Encoder
 *
 * \date	4/20/2009 Created
 *
 *************************************************************************************
 */
#if !defined(WELS_ENCODER_PARAMETER_SVC_H__)
#define WELS_ENCODER_PARAMETER_SVC_H__

#include <string.h>
#include <math.h>
#include "typedefs.h"
#include "codec_def.h"
#include "macros.h"
#include "wels_const.h"
#include "wels_common_basis.h"
#include "rc.h"
#include "svc_enc_slice_segment.h"
#include "as264_common.h"

namespace WelsSVCEnc {

#define   INVALID_TEMPORAL_ID   ((uint8_t)0xff)

extern const uint8_t   g_kuiTemporalIdListTable[MAX_TEMPORAL_LEVEL][MAX_GOP_SIZE + 1];

/*!
* \brief	get Logarithms base 2 of (upper/base)
* \param	base	based scaler
* \param	upper	input upper value
* \return	2 based scaling factor
*/
static inline uint32_t GetLogFactor (float base, float upper) {
  const double dLog2factor	= log10 (1.0 * upper / base) / log10 (2.0);
  const double dEpsilon		= 0.0001;
  const double dRound		= floor (dLog2factor + 0.5);

  if (dLog2factor < dRound + dEpsilon && dRound < dLog2factor + dEpsilon) {
    return (uint32_t) (dRound);
  }
  return UINT_MAX;
}

/*
 *	Dependency Layer Parameter
 */
typedef struct TagDLayerParam {
  int32_t		iActualWidth;			// input source picture actual width
  int32_t		iActualHeight;			// input source picture actual height
  int32_t		iFrameWidth;			// frame width
  int32_t		iFrameHeight;			// frame height

  int32_t		iSpatialBitrate;

  /* temporal settings related */
  int32_t		iTemporalResolution;
  int32_t		iDecompositionStages;
  uint8_t     uiCodingIdx2TemporalId[ (1 << MAX_TEMPORAL_LEVEL) + 1];

  uint8_t		uiProfileIdc;			// value of profile IDC (0 for auto-detection)
  uint8_t		uiLevelIdc;
  int8_t		iHighestTemporalId;
//	uint8_t		uiDependencyId;
  int8_t      iDLayerQp;

  SSliceConfig sSliceCfg;	// multiple slice options

  float		fInputFrameRate;		// input frame rate
  float		fOutputFrameRate;		// output frame rate

#ifdef ENABLE_FRAME_DUMP
  char		sRecFileName[MAX_FNAME_LEN];	// file to be constructed
#endif//ENABLE_FRAME_DUMP
} SDLayerParam;

/*
 *	Cisco OpenH264 Encoder Parameter Configuration
 */
typedef struct TagWelsSvcCodingParam: SEncParamExt {
  SDLayerParam	sDependencyLayers[MAX_DEPENDENCY_LAYER];

  /* General */
  uint32_t	uiGopSize;			// GOP size (at maximal frame rate: 16)
  struct {
    int32_t iLeft;
    int32_t iTop;
    int32_t iWidth;
    int32_t iHeight;
  } SUsedPicRect;	// the rect in input picture that encoder actually used

  char*       pCurPath; // record current lib path such as:/pData/pData/com.wels.enc/lib/

  bool		bDeblockingParallelFlag;	// deblocking filter parallelization control flag

  short
  iCountThreadsNum;                       //              # derived from disable_multiple_slice_idc (=0 or >1) means;

  int8_t		iDecompStages;		// GOP size dependency


 public:
  TagWelsSvcCodingParam() {
    FillDefault();
  }
  ~TagWelsSvcCodingParam()	{}

  static void FillDefault (SEncParamExt& param) {
    memset (&param, 0, sizeof (param));
    param.uiIntraPeriod		= 0;			// intra period (multiple of GOP size as desired)
    param.iNumRefFrame		= AUTO_REF_PIC_COUNT;// number of reference frame used

    param.iPicWidth	= 0;    //   actual input picture width
    param.iPicHeight	= 0;	//   actual input picture height

    param.fMaxFrameRate		= MAX_FRAME_RATE;	// maximal frame rate [Hz / fps]
    param.iInputCsp			= videoFormatI420;	// input sequence color space in default
    param.uiFrameToBeCoded	= (uint32_t) - 1;		// frame to be encoded (at input frame rate)

    param.iTargetBitrate			= 0;	// overall target bitrate introduced in RC module
    param.iMaxBitrate             = MAX_BIT_RATE;
    param.iMultipleThreadIdc		= 1;

    param.iLTRRefNum				= 0;
    param.iLtrMarkPeriod			= 30;	//the min distance of two int32_t references

    param.bEnableSSEI					= true;
    param.bEnableFrameCroppingFlag	= true;	// enable frame cropping flag: true alwayse in application
    // false: Streaming Video Sharing; true: Video Conferencing Meeting;

    /* Deblocking loop filter */
    param.iLoopFilterDisableIdc		= 0;	// 0: on, 1: off, 2: on except for slice boundaries
    param.iLoopFilterAlphaC0Offset	= 0;	// AlphaOffset: valid range [-6, 6], default 0
    param.iLoopFilterBetaOffset		= 0;	// BetaOffset:	valid range [-6, 6], default 0

    /* Rate Control */
    param.iRCMode			= RC_QUALITY_MODE;
    param.iPaddingFlag	= 0;

    param.bEnableDenoise				= false;	// denoise control
    param.bEnableSceneChangeDetect	= true;		// scene change detection control
    param.bEnableBackgroundDetection	= true;		// background detection control
    param.bEnableAdaptiveQuant		= true;		// adaptive quantization control
    param.bEnableFrameSkip		= true;		// frame skipping
    param.bEnableLongTermReference	= false;	// long term reference control
    param.bEnableSpsPpsIdAddition	= true;		// pSps pPps id addition control
    param.bPrefixNalAddingCtrl		= false;		// prefix NAL adding control
    param.iSpatialLayerNum		= 1;		// number of dependency(Spatial/CGS) layers used to be encoded
    param.iTemporalLayerNum			= 1;		// number of temporal layer specified

    param.iMaxQp = 51;
    param.iMinQp = 0;
    param.iUsageType = CAMERA_VIDEO_REAL_TIME;
    param.uiMaxNalSize = 0;

    for (int32_t iLayer = 0; iLayer < MAX_SPATIAL_LAYER_NUM; iLayer++) {
      param.sSpatialLayers[iLayer].uiProfileIdc = PRO_BASELINE;
      param.sSpatialLayers[iLayer].uiLevelIdc = LEVEL_5_0;
      param.sSpatialLayers[iLayer].iDLayerQp = SVC_QUALITY_BASE_QP;
      param.sSpatialLayers[iLayer].fFrameRate = param.fMaxFrameRate;
      param.sSpatialLayers[iLayer].sSliceCfg.uiSliceMode = SM_SINGLE_SLICE;
      param.sSpatialLayers[iLayer].sSliceCfg.sSliceArgument.uiSliceSizeConstraint = 1500;
      param.sSpatialLayers[iLayer].sSliceCfg.sSliceArgument.uiSliceNum = 1;

      const int32_t kiLesserSliceNum = ((MAX_SLICES_NUM < MAX_SLICES_NUM_TMP) ? MAX_SLICES_NUM : MAX_SLICES_NUM_TMP);
      for (int32_t idx = 0; idx < kiLesserSliceNum; idx++)
        param.sSpatialLayers[iLayer].sSliceCfg.sSliceArgument.uiSliceMbNum[idx] = 960;
    }
  }

  void FillDefault() {
    FillDefault (*this);
    uiGopSize			= 1;			// GOP size (at maximal frame rate: 16)

    SUsedPicRect.iLeft	=
      SUsedPicRect.iTop	=
        SUsedPicRect.iWidth	=
          SUsedPicRect.iHeight = 0;	// the rect in input picture that encoder actually used

    pCurPath			= NULL; // record current lib path such as:/pData/pData/com.wels.enc/lib/

    bDeblockingParallelFlag = false;	// deblocking filter parallelization control flag

    iCountThreadsNum		= 1;	//		# derived from disable_multiple_slice_idc (=0 or >1) means;

    iDecompStages				= 0;	// GOP size dependency, unknown here and be revised later

    memset (sDependencyLayers, 0, sizeof (SDLayerParam)*MAX_DEPENDENCY_LAYER);



    //init multi-slice
    sDependencyLayers[0].sSliceCfg.uiSliceMode = SM_SINGLE_SLICE;
    sDependencyLayers[0].sSliceCfg.sSliceArgument.uiSliceSizeConstraint    = 1500;
    sDependencyLayers[0].sSliceCfg.sSliceArgument.uiSliceNum      = 1;

    const int32_t kiLesserSliceNum = ((MAX_SLICES_NUM < MAX_SLICES_NUM_TMP) ? MAX_SLICES_NUM : MAX_SLICES_NUM_TMP);
    for (int32_t idx = 0; idx < kiLesserSliceNum; idx++)
      sDependencyLayers[0].sSliceCfg.sSliceArgument.uiSliceMbNum[idx] = 960;
    sDependencyLayers[0].iDLayerQp = SVC_QUALITY_BASE_QP;


  }

  int32_t ParamBaseTranscode (const SEncParamBase& pCodingParam) {

    iInputCsp		= pCodingParam.iInputCsp;		// color space of input sequence
    fMaxFrameRate		= WELS_CLIP3 (pCodingParam.fMaxFrameRate, MIN_FRAME_RATE, MAX_FRAME_RATE);
    iTargetBitrate	= pCodingParam.iTargetBitrate;
    iUsageType = pCodingParam.iUsageType;
    iPicWidth   = pCodingParam.iPicWidth;
    iPicHeight  = pCodingParam.iPicHeight;

    SUsedPicRect.iLeft = 0;
    SUsedPicRect.iTop  = 0;
    SUsedPicRect.iWidth = ((iPicWidth >> 1) << 1);
    SUsedPicRect.iHeight = ((iPicHeight >> 1) << 1);

    iRCMode = pCodingParam.iRCMode;    // rc mode

    int8_t iIdxSpatial	= 0;
    uint8_t uiProfileIdc		= PRO_BASELINE;

    SDLayerParam* pDlp		= &sDependencyLayers[0];

    while (iIdxSpatial < iSpatialLayerNum) {

      pDlp->uiProfileIdc		= uiProfileIdc;
      sSpatialLayers[iIdxSpatial].fFrameRate	= WELS_CLIP3 (pCodingParam.fMaxFrameRate,
          MIN_FRAME_RATE, MAX_FRAME_RATE);
      pDlp->fInputFrameRate	=
        pDlp->fOutputFrameRate	= WELS_CLIP3 (sSpatialLayers[iIdxSpatial].fFrameRate, MIN_FRAME_RATE,
                                              MAX_FRAME_RATE);
#ifdef ENABLE_FRAME_DUMP
      pDlp->sRecFileName[0]	= '\0';	// file to be constructed
#endif//ENABLE_FRAME_DUMP
      pDlp->iActualWidth = sSpatialLayers[iIdxSpatial].iVideoWidth = iPicWidth;
      pDlp->iFrameWidth = pDlp->iActualWidth;

      pDlp->iActualHeight = sSpatialLayers[iIdxSpatial].iVideoHeight = iPicHeight;
      pDlp->iFrameHeight = pDlp->iActualHeight;

      pDlp->iSpatialBitrate	=
        sSpatialLayers[iIdxSpatial].iSpatialBitrate = pCodingParam.iTargetBitrate;	// target bitrate for current spatial layer

      pDlp->iDLayerQp = SVC_QUALITY_BASE_QP;

      uiProfileIdc	= PRO_SCALABLE_BASELINE;
      ++ pDlp;
      ++ iIdxSpatial;
    }
    SetActualPicResolution();

    return 0;
  }
  void GetBaseParams (SEncParamBase* pCodingParam) {
    pCodingParam->iUsageType     = iUsageType;
    pCodingParam->iInputCsp      = iInputCsp;
    pCodingParam->iPicWidth      = iPicWidth;
    pCodingParam->iPicHeight     = iPicHeight;
    pCodingParam->iTargetBitrate = iTargetBitrate;
    pCodingParam->iRCMode        = iRCMode;
    pCodingParam->fMaxFrameRate  = fMaxFrameRate;
  }
  int32_t ParamTranscode (const SEncParamExt& pCodingParam) {
    float fParamMaxFrameRate		= WELS_CLIP3 (pCodingParam.fMaxFrameRate, MIN_FRAME_RATE, MAX_FRAME_RATE);

    iInputCsp		= pCodingParam.iInputCsp;		// color space of input sequence
    uiFrameToBeCoded	= (uint32_t) -
                        1;		// frame to be encoded (at input frame rate), -1 dependents on length of input sequence
    iUsageType = pCodingParam.iUsageType;
    iPicWidth   = pCodingParam.iPicWidth;
    iPicHeight  = pCodingParam.iPicHeight;

    SUsedPicRect.iLeft = 0;
    SUsedPicRect.iTop  = 0;
    SUsedPicRect.iWidth = ((iPicWidth >> 1) << 1);
    SUsedPicRect.iHeight = ((iPicHeight >> 1) << 1);

    /* Deblocking loop filter */
    iLoopFilterDisableIdc	= pCodingParam.iLoopFilterDisableIdc;	// 0: on, 1: off, 2: on except for slice boundaries,
    if (iLoopFilterDisableIdc == 0) // Loop filter requested to be enabled
      iLoopFilterDisableIdc = 2; // Disable loop filter on slice boundaries since that's not allowed with multithreading
    iLoopFilterAlphaC0Offset = pCodingParam.iLoopFilterAlphaC0Offset;	// AlphaOffset: valid range [-6, 6], default 0
    iLoopFilterBetaOffset = pCodingParam.iLoopFilterBetaOffset;	// BetaOffset:	valid range [-6, 6], default 0

    bEnableFrameCroppingFlag	= pCodingParam.bEnableFrameCroppingFlag;

    /* Rate Control */
    iRCMode = pCodingParam.iRCMode;    // rc mode
    iPaddingFlag = pCodingParam.iPaddingFlag;

    iTargetBitrate		= pCodingParam.iTargetBitrate;	// target bitrate
    iMaxBitrate           = pCodingParam.iMaxBitrate;

    uiMaxNalSize          = pCodingParam.uiMaxNalSize;
    /* Denoise Control */
    bEnableDenoise = pCodingParam.bEnableDenoise ? true : false;    // Denoise Control  // only support 0 or 1 now

    /* Scene change detection control */
    bEnableSceneChangeDetect	= pCodingParam.bEnableSceneChangeDetect;

    /* Background detection Control */
    bEnableBackgroundDetection = pCodingParam.bEnableBackgroundDetection ? true : false;

    /* Adaptive quantization control */
    bEnableAdaptiveQuant	= pCodingParam.bEnableAdaptiveQuant ? true : false;

    /* Frame skipping */
    bEnableFrameSkip	= pCodingParam.bEnableFrameSkip ? true : false;

    /* Enable int32_t term reference */
    bEnableLongTermReference	= pCodingParam.bEnableLongTermReference ? true : false;
    iLtrMarkPeriod = pCodingParam.iLtrMarkPeriod;

    iMultipleThreadIdc = pCodingParam.iMultipleThreadIdc;

    /* For ssei information */
    bEnableSSEI		= pCodingParam.bEnableSSEI;

    /* Layer definition */
    iSpatialLayerNum	= (int8_t)WELS_CLIP3 (pCodingParam.iSpatialLayerNum, 1,
                                            MAX_DEPENDENCY_LAYER); // number of dependency(Spatial/CGS) layers used to be encoded
    iTemporalLayerNum		= (int8_t)WELS_CLIP3 (pCodingParam.iTemporalLayerNum, 1,
                          MAX_TEMPORAL_LEVEL); // number of temporal layer specified

    uiGopSize			= 1 << (iTemporalLayerNum - 1);	// Override GOP size based temporal layer
    iDecompStages		= iTemporalLayerNum - 1;	// WELS_LOG2( uiGopSize );// GOP size dependency
    uiIntraPeriod		= pCodingParam.uiIntraPeriod;// intra period (multiple of GOP size as desired)
    if (uiIntraPeriod == (uint32_t) (-1))
      uiIntraPeriod = 0;
    else if (uiIntraPeriod & (uiGopSize - 1))	// none multiple of GOP size
      uiIntraPeriod = ((uiIntraPeriod + uiGopSize - 1) / uiGopSize) * uiGopSize;

    if (iUsageType == SCREEN_CONTENT_REAL_TIME) {
      if (bEnableLongTermReference) {
        iLTRRefNum = WELS_CLIP3 (pCodingParam.iLTRRefNum, 1, LONG_TERM_REF_NUM_SCREEN);
        if (iNumRefFrame == AUTO_REF_PIC_COUNT)
          iNumRefFrame = WELS_MAX (1, WELS_LOG2 (uiGopSize)) + iLTRRefNum;
      } else {
        iLTRRefNum = 0;

        if (iNumRefFrame == AUTO_REF_PIC_COUNT)
          iNumRefFrame = WELS_MAX (1, uiGopSize >> 1);
      }
    } else {
      iLTRRefNum = bEnableLongTermReference ? WELS_CLIP3 (pCodingParam.iLTRRefNum, 1, LONG_TERM_REF_NUM) : 0;
      if (iNumRefFrame == AUTO_REF_PIC_COUNT) {
        iNumRefFrame		= ((uiGopSize >> 1) > 1) ? ((uiGopSize >> 1) + iLTRRefNum) : (MIN_REF_PIC_COUNT + iLTRRefNum);
        iNumRefFrame		= WELS_CLIP3 (iNumRefFrame, MIN_REF_PIC_COUNT, MAX_REFERENCE_PICTURE_COUNT_NUM);
      }
    }
    iLtrMarkPeriod  = pCodingParam.iLtrMarkPeriod;

    bPrefixNalAddingCtrl	= pCodingParam.bPrefixNalAddingCtrl;

    bEnableSpsPpsIdAddition =
      pCodingParam.bEnableSpsPpsIdAddition;//For SVC meeting application, to avoid mosaic issue caused by cross-IDR reference.
    //SHOULD enable this feature.

    SDLayerParam* pDlp		= &sDependencyLayers[0];
    float fMaxFr			= .0f;
    uint8_t uiProfileIdc		= PRO_BASELINE;
    int8_t iIdxSpatial	= 0;
    while (iIdxSpatial < iSpatialLayerNum) {
      pDlp->uiProfileIdc		= (pCodingParam.sSpatialLayers[iIdxSpatial].uiProfileIdc == PRO_UNKNOWN) ? uiProfileIdc :
                              pCodingParam.sSpatialLayers[iIdxSpatial].uiProfileIdc;
      pDlp->uiLevelIdc        = (pCodingParam.sSpatialLayers[iIdxSpatial].uiLevelIdc == LEVEL_UNKNOWN) ? LEVEL_5_0 :
                                pCodingParam.sSpatialLayers[iIdxSpatial].uiLevelIdc;

      float fLayerFrameRate	= WELS_CLIP3 (pCodingParam.sSpatialLayers[iIdxSpatial].fFrameRate,
                                          MIN_FRAME_RATE, fParamMaxFrameRate);
      pDlp->fInputFrameRate	=
        pDlp->fOutputFrameRate	= WELS_CLIP3 (fLayerFrameRate, MIN_FRAME_RATE, MAX_FRAME_RATE);
      if (pDlp->fInputFrameRate > fMaxFr + EPSN)
        fMaxFr = pDlp->fInputFrameRate;

#ifdef ENABLE_FRAME_DUMP
      pDlp->sRecFileName[0]	= '\0';	// file to be constructed
#endif//ENABLE_FRAME_DUMP
      pDlp->iFrameWidth		= pCodingParam.sSpatialLayers[iIdxSpatial].iVideoWidth;	// frame width
      pDlp->iFrameHeight		= pCodingParam.sSpatialLayers[iIdxSpatial].iVideoHeight;// frame height
      pDlp->iSpatialBitrate	=
        pCodingParam.sSpatialLayers[iIdxSpatial].iSpatialBitrate;	// target bitrate for current spatial layer

      //multi slice
      pDlp->sSliceCfg.uiSliceMode = pCodingParam.sSpatialLayers[iIdxSpatial].sSliceCfg.uiSliceMode;
      pDlp->sSliceCfg.sSliceArgument.uiSliceSizeConstraint
        = (uint32_t) (pCodingParam.sSpatialLayers[iIdxSpatial].sSliceCfg.sSliceArgument.uiSliceSizeConstraint);
      pDlp->sSliceCfg.sSliceArgument.uiSliceNum
        = pCodingParam.sSpatialLayers[iIdxSpatial].sSliceCfg.sSliceArgument.uiSliceNum;
      const int32_t kiLesserSliceNum = ((MAX_SLICES_NUM < MAX_SLICES_NUM_TMP) ? MAX_SLICES_NUM : MAX_SLICES_NUM_TMP);
      memcpy (pDlp->sSliceCfg.sSliceArgument.uiSliceMbNum,
              pCodingParam.sSpatialLayers[iIdxSpatial].sSliceCfg.sSliceArgument.uiSliceMbNum,	// confirmed_safe_unsafe_usage
              kiLesserSliceNum * sizeof (uint32_t)) ;

      pDlp->iDLayerQp = pCodingParam.sSpatialLayers[iIdxSpatial].iDLayerQp;

      uiProfileIdc	= PRO_SCALABLE_BASELINE;
      ++ pDlp;
      ++ iIdxSpatial;
    }

    fMaxFrameRate	= fMaxFr;

    SetActualPicResolution();

    return 0;
  }

// assuming that the width/height ratio of all spatial layers are the same

  void SetActualPicResolution() {
    int32_t iSpatialIdx			= iSpatialLayerNum - 1;
    SDLayerParam* pDlayer		= &sDependencyLayers[iSpatialIdx];

    for (; iSpatialIdx >= 0; iSpatialIdx --) {
      pDlayer	= &sDependencyLayers[iSpatialIdx];

      pDlayer->iActualWidth = pDlayer->iFrameWidth;
      pDlayer->iActualHeight = pDlayer->iFrameHeight;
      pDlayer->iFrameWidth = WELS_ALIGN (pDlayer->iActualWidth, MB_WIDTH_LUMA);
      pDlayer->iFrameHeight = WELS_ALIGN (pDlayer->iActualHeight, MB_HEIGHT_LUMA);
    }
  }

  /*!
  * \brief	determined key coding tables for temporal scalability, uiProfileIdc etc for each spatial layer settings
  * \param	SWelsSvcCodingParam, and carried with known GOP size, max, input and output frame rate of each spatial
  * \return	NONE (should ensure valid parameter before this procedure)
  */
  void DetermineTemporalSettings() {
    const int32_t iDecStages		= WELS_LOG2 (
                                    uiGopSize);	// (int8_t)GetLogFactor(1.0f, 1.0f * pcfg->uiGopSize);	//log2(uiGopSize)
    const uint8_t* pTemporalIdList	= &g_kuiTemporalIdListTable[iDecStages][0];
    SDLayerParam* pDlp				= &sDependencyLayers[0];
    uint8_t uiProfileIdc				= PRO_BASELINE;
    int8_t i						= 0;

    while (i < iSpatialLayerNum) {
      const uint32_t kuiLogFactorInOutRate	= GetLogFactor (pDlp->fOutputFrameRate, pDlp->fInputFrameRate);
      const uint32_t kuiLogFactorMaxInRate	= GetLogFactor (pDlp->fInputFrameRate, fMaxFrameRate);
      int32_t iNotCodedMask = 0;
      int8_t iMaxTemporalId = 0;

      memset (pDlp->uiCodingIdx2TemporalId, INVALID_TEMPORAL_ID, sizeof (pDlp->uiCodingIdx2TemporalId));
      pDlp->uiProfileIdc = uiProfileIdc;	// PRO_BASELINE, PRO_SCALABLE_BASELINE;

      iNotCodedMask	= (1 << (kuiLogFactorInOutRate + kuiLogFactorMaxInRate)) - 1;
      for (uint32_t uiFrameIdx = 0; uiFrameIdx <= uiGopSize; ++ uiFrameIdx) {
        if (0 == (uiFrameIdx & iNotCodedMask)) {
          const int8_t kiTemporalId = pTemporalIdList[uiFrameIdx];
          pDlp->uiCodingIdx2TemporalId[uiFrameIdx] = kiTemporalId;
          if (kiTemporalId > iMaxTemporalId) {
            iMaxTemporalId = kiTemporalId;
          }
        }
      }

      pDlp->iHighestTemporalId	= iMaxTemporalId;
      pDlp->iTemporalResolution	= kuiLogFactorMaxInRate + kuiLogFactorInOutRate;
      pDlp->iDecompositionStages	= iDecStages - kuiLogFactorMaxInRate - kuiLogFactorInOutRate;

      uiProfileIdc	= PRO_SCALABLE_BASELINE;
      ++ pDlp;
      ++ i;
    }
    iDecompStages = (int8_t)iDecStages;
  }

} SWelsSvcCodingParam;

static inline int32_t FreeCodingParam (SWelsSvcCodingParam** pParam, CMemoryAlign* pMa) {
  if (pParam == NULL || *pParam == NULL || pMa == NULL)
    return 1;
  pMa->WelsFree (*pParam, "SWelsSvcCodingParam");
  *pParam = NULL;
  return 0;
}

static inline int32_t AllocCodingParam (SWelsSvcCodingParam** pParam, CMemoryAlign* pMa) {
  if (pParam == NULL || pMa == NULL)
    return 1;
  if (*pParam != NULL) {
    FreeCodingParam (pParam, pMa);
  }
  SWelsSvcCodingParam* pCodingParam = (SWelsSvcCodingParam*)pMa->WelsMalloc (sizeof (SWelsSvcCodingParam),
                                      "SWelsSvcCodingParam");
  if (NULL == pCodingParam)
    return 1;
  *pParam = pCodingParam;
  return 0;
}

}//end of namespace WelsSVCEnc

#endif//WELS_ENCODER_PARAMETER_SVC_H__