244 lines
8.2 KiB
C
244 lines
8.2 KiB
C
/*------------------------------------------------------------------------------
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-- --
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-- This software is confidential and proprietary and may be used --
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-- only as expressly authorized by a licensing agreement from --
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-- --
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-- Hantro Products Oy. --
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-- --
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-- (C) COPYRIGHT 2006 HANTRO PRODUCTS OY --
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-- ALL RIGHTS RESERVED --
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-- --
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-- The entire notice above must be reproduced --
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-- on all copies and should not be removed. --
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-- --
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--------------------------------------------------------------------------------
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--
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-- Abstract : Decode slice header information from the stream
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--
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--------------------------------------------------------------------------------
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--
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-- Version control information, please leave untouched.
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--
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-- $RCSfile: h264hwd_slice_header.h,v $
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-- $Date: 2009/09/16 11:33:06 $
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-- $Revision: 1.3 $
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--
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------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------------
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Table of contents
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1. Include headers
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2. Module defines
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3. Data types
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4. Function prototypes
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------------------------------------------------------------------------------*/
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#ifndef H264HWD_SLICE_HEADER_H
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#define H264HWD_SLICE_HEADER_H
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/*------------------------------------------------------------------------------
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1. Include headers
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------------------------------------------------------------------------------*/
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#include "basetype.h"
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#include "h264hwd_stream.h"
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#include "h264hwd_cfg.h"
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#include "h264hwd_seq_param_set.h"
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#include "h264hwd_pic_param_set.h"
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#include "h264hwd_nal_unit.h"
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/*------------------------------------------------------------------------------
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2. Module defines
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------------------------------------------------------------------------------*/
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enum {
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P_SLICE = 0,
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B_SLICE = 1,
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I_SLICE = 2
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};
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enum {NO_LONG_TERM_FRAME_INDICES = 0xFFFF};
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/* macro to determine if slice is an inter slice, sliceTypes 0 and 5 */
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#define IS_P_SLICE(sliceType) (((sliceType) == P_SLICE) || \
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((sliceType) == P_SLICE + 5))
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/* macro to determine if slice is an intra slice, sliceTypes 2 and 7 */
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#define IS_I_SLICE(sliceType) (((sliceType) == I_SLICE) || \
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((sliceType) == I_SLICE + 5))
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#define IS_B_SLICE(sliceType) (((sliceType) == B_SLICE) || \
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((sliceType) == B_SLICE + 5))
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/*------------------------------------------------------------------------------
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3. Data types
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------------------------------------------------------------------------------*/
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/* structure to store data of one reference picture list reordering operation */
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typedef struct
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{
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u32 reorderingOfPicNumsIdc;
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u32 absDiffPicNum;
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u32 longTermPicNum;
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} refPicListReorderingOperation_t;
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/* structure to store reference picture list reordering operations */
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typedef struct
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{
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u32 refPicListReorderingFlagL0;
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refPicListReorderingOperation_t command[MAX_NUM_REF_PICS+1];
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} refPicListReordering_t;
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/* structure to store data of one DPB memory management control operation */
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typedef struct
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{
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u32 memoryManagementControlOperation;
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u32 differenceOfPicNums;
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u32 longTermPicNum;
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u32 longTermFrameIdx;
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u32 maxLongTermFrameIdx;
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} memoryManagementOperation_t;
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/* worst case scenario: all MAX_NUM_REF_PICS pictures in the buffer are
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* short term pictures, each one of them is first marked as long term
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* reference picture which is then marked as unused for reference.
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* Additionally, max long-term frame index is set and current picture is
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* marked as long term reference picture. Last position reserved for
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* end memory_management_control_operation command */
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#define MAX_NUM_MMC_OPERATIONS (2*MAX_NUM_REF_PICS+2+1)
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/* structure to store decoded reference picture marking data */
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typedef struct
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{
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u32 strmLen;
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u32 noOutputOfPriorPicsFlag;
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u32 longTermReferenceFlag;
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u32 adaptiveRefPicMarkingModeFlag;
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memoryManagementOperation_t operation[MAX_NUM_MMC_OPERATIONS];
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} decRefPicMarking_t;
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/* structure to store slice header data decoded from the stream */
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typedef struct
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{
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u32 firstMbInSlice;
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u32 sliceType;
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u32 picParameterSetId;
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u32 frameNum;
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u32 idrPicId;
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u32 pocLength;
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u32 pocLengthHw;
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u32 picOrderCntLsb;
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i32 deltaPicOrderCntBottom;
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i32 deltaPicOrderCnt[2];
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u32 redundantPicCnt;
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u32 numRefIdxActiveOverrideFlag;
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u32 numRefIdxL0Active;
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u32 numRefIdxL1Active;
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i32 sliceQpDelta;
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u32 disableDeblockingFilterIdc;
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i32 sliceAlphaC0Offset;
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i32 sliceBetaOffset;
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u32 sliceGroupChangeCycle;
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refPicListReordering_t refPicListReordering;
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refPicListReordering_t refPicListReorderingL1;
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decRefPicMarking_t decRefPicMarking;
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u32 cabacInitIdc;
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u32 fieldPicFlag;
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u32 bottomFieldFlag;
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u32 directSpatialMvPredFlag;
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} sliceHeader_t;
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/*------------------------------------------------------------------------------
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4. Function prototypes
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------------------------------------------------------------------------------*/
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u32 h264bsdDecodeSliceHeader(strmData_t *pStrmData,
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sliceHeader_t *pSliceHeader,
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seqParamSet_t *pSeqParamSet,
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picParamSet_t *pPicParamSet,
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nalUnit_t *pNalUnit);
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u32 h264bsdCheckPpsId(strmData_t *pStrmData, u32 *ppsId);
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u32 h264bsdCheckFrameNum(
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strmData_t *pStrmData,
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u32 maxFrameNum,
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u32 *frameNum);
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u32 h264bsdCheckIdrPicId(
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strmData_t *pStrmData,
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u32 maxFrameNum,
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nalUnitType_e nalUnitType,
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u32 fieldPicFlag,
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u32 *idrPicId);
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u32 h264bsdCheckPicOrderCntLsb(
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strmData_t *pStrmData,
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seqParamSet_t *pSeqParamSet,
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nalUnitType_e nalUnitType,
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u32 *picOrderCntLsb);
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u32 h264bsdCheckDeltaPicOrderCntBottom(
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strmData_t *pStrmData,
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seqParamSet_t *pSeqParamSet,
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nalUnitType_e nalUnitType,
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i32 *deltaPicOrderCntBottom);
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u32 h264bsdCheckDeltaPicOrderCnt(
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strmData_t *pStrmData,
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seqParamSet_t *pSeqParamSet,
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nalUnitType_e nalUnitType,
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u32 picOrderPresentFlag,
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i32 *deltaPicOrderCnt);
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u32 h264bsdCheckRedundantPicCnt(
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const strmData_t *pStrmData,
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const seqParamSet_t *pSeqParamSet,
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const picParamSet_t *pPicParamSet,
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nalUnitType_e nalUnitType,
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u32 *redundantPicCnt);
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u32 h264bsdCheckPriorPicsFlag(u32 * noOutputOfPriorPicsFlag,
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const strmData_t * pStrmData,
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const seqParamSet_t * pSeqParamSet,
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const picParamSet_t * pPicParamSet,
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nalUnitType_e nalUnitType);
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u32 h264bsdFieldPicFlag(strmData_t * pStrmData,
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u32 maxFrameNum,
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nalUnitType_e nalUnitType,
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u32 fieldPicFlagPresent,
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u32 *fieldPicFlag);
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u32 h264bsdBottomFieldFlag(strmData_t * pStrmData,
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u32 maxFrameNum,
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nalUnitType_e nalUnitType,
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u32 fieldPicFlag,
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u32 *bottomFieldFlag);
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u32 h264bsdIsOppositeFieldPic(sliceHeader_t * pSliceCurr,
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sliceHeader_t * pSlicePrev,
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u32 *secondField, u32 prevRefFrameNum,
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u32 newPicture);
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u32 h264bsdCheckFieldPicFlag(strmData_t * pStrmData,
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u32 maxFrameNum,
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nalUnitType_e nalUnitType,
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u32 fieldPicFlagPresent,
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u32 *fieldPicFlag);
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u32 h264bsdCheckBottomFieldFlag(strmData_t * pStrmData,
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u32 maxFrameNum,
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nalUnitType_e nalUnitType, u32 fieldPicFlag,
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u32 * bottomFieldFlag);
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u32 h264bsdCheckFirstMbInSlice(strmData_t * pStrmData,
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nalUnitType_e nalUnitType,
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u32 * firstMbInSlice);
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#endif /* #ifdef H264HWD_SLICE_HEADER_H */
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