ref: a01c926b158ed2d1903888c6a6ebb2ae06b09394
dir: /codec/decoder/core/inc/slice.h/
/*!
* \copy
* Copyright (c) 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.
*
*/
//wels_slice.h
#ifndef WELS_SLICE_H__
#define WELS_SLICE_H__
#include "typedefs.h"
#include "wels_const.h"
#include "wels_common_basis.h"
#include "picture.h"
#include "parameter_sets.h"
namespace WelsDec {
/*
* Reference picture list reordering syntax, refer to page 64 in JVT X201wcm
*/
typedef struct TagRefPicListReorderSyntax {
struct {
uint32_t uiAbsDiffPicNumMinus1;
uint16_t uiLongTermPicNum;
uint16_t uiReorderingOfPicNumsIdc;
} sReorderingSyn[LIST_A][MAX_REF_PIC_COUNT];
bool bRefPicListReorderingFlag[LIST_A];
} SRefPicListReorderSyn, *PRefPicListReorderSyn;
/*
* Prediction weight table syntax, refer to page 65 in JVT X201wcm
*/
typedef struct TagPredWeightTabSyntax {
uint32_t uiLumaLog2WeightDenom;
uint32_t uiChromaLog2WeightDenom;
struct {
int32_t iLumaWeight[MAX_REF_PIC_COUNT];
int32_t iLumaOffset[MAX_REF_PIC_COUNT];
int32_t iChromaWeight[MAX_REF_PIC_COUNT][2];
int32_t iChromaOffset[MAX_REF_PIC_COUNT][2];
bool bLumaWeightFlag;
bool bChromaWeightFlag;
} sPredList[LIST_A];
} SPredWeightTabSyn,*PPredWeightTabSyn;
/* Decoded reference picture marking syntax, refer to Page 66 in JVT X201wcm */
typedef struct TagRefPicMarking {
struct {
uint32_t uiMmcoType;
int32_t iShortFrameNum;
int32_t iDiffOfPicNum;
uint32_t uiLongTermPicNum;
int32_t iLongTermFrameIdx;
int32_t iMaxLongTermFrameIdx;
} sMmcoRef[MAX_MMCO_COUNT];
bool bNoOutputOfPriorPicsFlag;
bool bLongTermRefFlag;
bool bAdaptiveRefPicMarkingModeFlag;
} SRefPicMarking, *PRefPicMarking;
/* Decode reference base picture marking syntax in Page 396 of JVT X201wcm */
typedef struct TagRefBasePicMarkingSyn {
struct {
uint32_t uiMmcoType;
int32_t iShortFrameNum;
uint32_t uiDiffOfPicNums;
uint32_t uiLongTermPicNum; //should uint32_t, cover larger range of iFrameNum.
} mmco_base[MAX_MMCO_COUNT]; // MAX_REF_PIC for reference picture based on frame
bool bAdaptiveRefBasePicMarkingModeFlag;
} SRefBasePicMarking, *PRefBasePicMarking;
/* Header of slice syntax elements, refer to Page 63 in JVT X201wcm */
typedef struct TagSliceHeaders {
/*****************************slice header syntax and generated****************************/
int32_t iFirstMbInSlice;
int32_t iFrameNum;
int32_t iPicOrderCntLsb;
int32_t iDeltaPicOrderCntBottom;
int32_t iDeltaPicOrderCnt[2];
int32_t iRedundantPicCnt;
int32_t uiRefCount[LIST_A];
int32_t iSliceQpDelta; //no use for iSliceQp is used directly
int32_t iSliceQp;
int32_t iSliceQsDelta; // For SP/SI slices
uint32_t uiDisableDeblockingFilterIdc;
int32_t iSliceAlphaC0Offset;
int32_t iSliceBetaOffset;
int32_t iSliceGroupChangeCycle;
PSps pSps;
PPps pPps;
int32_t iSpsId;
int32_t iPpsId;
bool bIdrFlag;
/*********************got from other layer for efficency if possible*********************/
SRefPicListReorderSyn pRefPicListReordering; // Reference picture list reordering syntaxs
SPredWeightTabSyn sPredWeightTable;
int32_t iCabacInitIdc;
int32_t iMbWidth; //from?
int32_t iMbHeight; //from?
SRefPicMarking sRefMarking; // Decoded reference picture marking syntaxs
uint16_t uiIdrPicId;
EWelsSliceType eSliceType;
bool bNumRefIdxActiveOverrideFlag;
bool bFieldPicFlag; //not supported in base profile
bool bBottomFiledFlag; //not supported in base profile
uint8_t uiPadding1Byte;
bool bSpForSwitchFlag; // For SP/SI slices
int16_t iPadding2Bytes;
} SSliceHeader, *PSliceHeader;
/* Slice header in scalable extension syntax, refer to Page 394 in JVT X201wcm */
typedef struct TagSliceHeaderExt {
SSliceHeader sSliceHeader;
PSubsetSps pSubsetSps;
uint32_t uiDisableInterLayerDeblockingFilterIdc;
int32_t iInterLayerSliceAlphaC0Offset;
int32_t iInterLayerSliceBetaOffset;
//SPosOffset sScaledRefLayer;
int32_t iScaledRefLayerPicWidthInSampleLuma;
int32_t iScaledRefLayerPicHeightInSampleLuma;
SRefBasePicMarking sRefBasePicMarking;
bool bBasePredWeightTableFlag;
bool bStoreRefBasePicFlag;
bool bConstrainedIntraResamplingFlag;
bool bSliceSkipFlag;
bool bAdaptiveBaseModeFlag;
bool bDefaultBaseModeFlag;
bool bAdaptiveMotionPredFlag;
bool bDefaultMotionPredFlag;
bool bAdaptiveResidualPredFlag;
bool bDefaultResidualPredFlag;
bool bTCoeffLevelPredFlag;
uint8_t uiRefLayerChromaPhaseXPlus1Flag;
uint8_t uiRefLayerChromaPhaseYPlus1;
uint8_t uiRefLayerDqId;
uint8_t uiScanIdxStart;
uint8_t uiScanIdxEnd;
} SSliceHeaderExt, *PSliceHeaderExt;
typedef struct TagSlice {
/*******************************slice_header****************************/
SSliceHeaderExt sSliceHeaderExt;
/*******************************use for future****************************/
// for Macroblock coding within slice
int32_t iLastMbQp; // stored qp for last mb coded, maybe more efficient for mb skip detection etc.
/*******************************slice_data****************************/
/*slice_data_ext()*/
int32_t iMbSkipRun;
int32_t iTotalMbInCurSlice; //record the total number of MB in current slice.
/*slice_data_ext() generate*/
/*******************************misc use****************************/
bool bSliceHeaderExtFlag; // Indicate which slice header is used, avc or ext?
/*************got from other layer for effiency if possible***************/
/*from lower layer: slice header*/
uint8_t eSliceType;
uint8_t uiPadding[2];
int32_t iLastDeltaQp;
} SSlice, *PSlice;
} // namespace WelsDec
#endif//WELS_SLICE_H__