openh264/codec/encoder/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 "mb_cache.h"
#include "picture.h"
#include "parameter_sets.h"
#include "svc_enc_slice_segment.h"
#include "bit_stream.h"


namespace WelsSVCEnc {

/*******************************sub struct of slice header****************************/


/*
 *	Reference picture list reordering syntax, refer to page 64 in JVT X201wcm
 */
typedef struct TagRefPicListReorderSyntax {
struct {
  uint32_t	uiAbsDiffPicNumMinus1; //uiAbsDiffPicNumMinus1 SHOULD be in the range of [4, (1<<pSps->uiLog2MaxFrameNum)-1], {p104, JVT-X201wcm1}
  //but int8_t can't cover the range, SHOULD modify it.
  uint16_t	iLongTermPicNum;
  uint16_t	uiReorderingOfPicNumsIdc; //in order to pack 2-uint16_t into 1-(u)int32_t, so modify the type into uint16_t.
} SReorderingSyntax[MAX_REFERENCE_REORDER_COUNT_NUM];	// MAX_REF_PIC_COUNT
} SRefPicListReorderSyntax;


/* Decoded reference picture marking syntax, refer to Page 66 in JVT X201wcm */
typedef struct TagRefPicMarking {
struct {
  int32_t	iMmcoType;
  int32_t iShortFrameNum;
  int32_t	iDiffOfPicNum;
  int32_t	iLongTermPicNum;
  int32_t	iLongTermFrameIdx;
  int32_t	iMaxLongTermFrameIdx;
} SMmcoRef[MAX_REFERENCE_MMCO_COUNT_NUM];	// MAX_MMCO_COUNT

//	int32_t		mmco_index;
uint8_t		uiMmcoCount;
bool		bNoOutputOfPriorPicsFlag;
bool		bLongTermRefFlag;
bool		bAdaptiveRefPicMarkingModeFlag;
} SRefPicMarking;


/* Header of slice syntax elements, refer to Page 63 in JVT X201wcm */
typedef struct TagSliceHeader {
/*****************************slice header syntax and generated****************************/
int32_t		iFirstMbInSlice;
//	uint32_t	pic_parameter_set_id;
int32_t		iFrameNum;
int32_t		iPicOrderCntLsb;

//	int32_t		delta_pic_order_cnt_bottom;
//	int32_t		delta_pic_order_cnt[2];
//	int32_t		redundant_pic_cnt;

EWelsSliceType	eSliceType;
uint8_t		uiNumRefIdxL0Active;			//
//int32_t		num_ref_idx_l1_active_minus1	//B frame is not supported
uint8_t		uiRefCount;
//Ref_Pic				*ref_pic;
uint8_t		uiRefIndex;	// exact reference picture index for slice

int8_t		iSliceQpDelta;
//	int32_t		slice_qp;
//	int32_t		slice_qs_delta;		// For SP/SI slices
uint8_t		uiDisableDeblockingFilterIdc;
int8_t		iSliceAlphaC0Offset;
int8_t		iSliceBetaOffset;
#if !defined(DISABLE_FMO_FEATURE)
int32_t		iSliceGroupChangeCycle;
#endif//!DISABLE_FMO_FEATURE

SWelsSPS*			pSps;
SWelsPPS*			pPps;
int32_t		iSpsId;
int32_t		iPpsId;

uint16_t    uiIdrPicId;
//	uint8_t		color_plane_id;//from?

bool		bNumRefIdxActiveOverrideFlag;
//	bool		field_pic_flag;		//not supported in base profile
//	bool		bottom_field_flag;		//not supported in base profile
uint8_t		uiPadding1Bytes;

SRefPicMarking		sRefMarking;	// Decoded reference picture marking syntaxs

SRefPicListReorderSyntax	sRefReordering;	// Reference picture list reordering syntaxs
} SSliceHeader, *PSliceHeader;


/* SSlice header in scalable extension syntax, refer to Page 394 in JVT X201wcm */
typedef struct TagSliceHeaderExt {
SSliceHeader	sSliceHeader;

SSubsetSps*	pSubsetSps;

uint32_t	uiNumMbsInSlice;

bool		bStoreRefBasePicFlag;
bool		bConstrainedIntraResamplingFlag;
bool		bSliceSkipFlag;

bool		bAdaptiveBaseModeFlag;
bool		bDefaultBaseModeFlag;
bool		bAdaptiveMotionPredFlag;
bool		bDefaultMotionPredFlag;

bool		bAdaptiveResidualPredFlag;
bool		bDefaultResidualPredFlag;
bool		bTcoeffLevelPredFlag;
uint8_t		uiDisableInterLayerDeblockingFilterIdc;

} SSliceHeaderExt, *PSliceHeaderExt;


typedef struct TagSlice {
// mainly for multiple threads imp.
SMbCache	sMbCacheInfo;	// MBCache is introduced within slice dependency
SBitStringAux* pSliceBsa;

/*******************************sSliceHeader****************************/
SSliceHeaderExt	sSliceHeaderExt;

SMVUnitXY	sMvStartMin;
SMVUnitXY	sMvStartMax;
SMVUnitXY	sMvc[5];
uint8_t		uiMvcNum;
uint8_t		sScaleShift;

uint8_t		uiSliceIdx;
bool		bSliceHeaderExtFlag; // Indicate which slice header is used, avc or ext?
uint8_t		uiLastMbQp;		// stored qp for last mb coded, maybe more efficient for mb skip detection etc.

bool		bDynamicSlicingSliceSizeCtrlFlag;
uint8_t		uiAssumeLog2BytePerMb;

uint32_t     uiSliceFMECostDown;//TODO: for FME switch under MT, to opt after ME final?

uint8_t		uiReservedFillByte;	// reserved to meet 4 bytes alignment
} SSlice, *PSlice;

}
#endif//WELS_SLICE_H__