160 lines
4.8 KiB
C
160 lines
4.8 KiB
C
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/*!
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************************************************************************
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* \file erc_api.h
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*
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* \brief
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* External (still inside video decoder) interface for error concealment module
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*
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* \author
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* - Ari Hourunranta <ari.hourunranta@nokia.com>
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* - Ye-Kui Wang <wyk@ieee.org>
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* - Jill Boyce <jill.boyce@thomson.net>
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* - Saurav K Bandyopadhyay <saurav@ieee.org>
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* - Zhenyu Wu <Zhenyu.Wu@thomson.net
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* - Purvin Pandit <Purvin.Pandit@thomson.net>
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*
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* ************************************************************************
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*/
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#ifndef _ERC_API_H_
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#define _ERC_API_H_
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#include "erc_globals.h"
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/*
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* Defines
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*/
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/* If the average motion vector of the correctly received macroblocks is less than the
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threshold, concealByCopy is used, otherwise concealByTrial is used. */
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#define MVPERMB_THR 8
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/* used to determine the size of the allocated memory for a temporal Region (MB) */
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#define DEF_REGION_SIZE 384 /* 8*8*6 */
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#define ERC_BLOCK_OK 3
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#define ERC_BLOCK_CONCEALED 2
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#define ERC_BLOCK_CORRUPTED 1
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#define ERC_BLOCK_EMPTY 0
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/*
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* Functions to convert MBNum representation to blockNum
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*/
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#define xPosYBlock(currYBlockNum,picSizeX) \
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((currYBlockNum)%((picSizeX)>>3))
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#define yPosYBlock(currYBlockNum,picSizeX) \
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((currYBlockNum)/((picSizeX)>>3))
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#define xPosMB(currMBNum,picSizeX) \
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((currMBNum)%((picSizeX)>>4))
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#define yPosMB(currMBNum,picSizeX) \
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((currMBNum)/((picSizeX)>>4))
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#define MBxy2YBlock(currXPos,currYPos,comp,picSizeX) \
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((((currYPos)<<1)+((comp)>>1))*((picSizeX)>>3)+((currXPos)<<1)+((comp)&1))
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#define MBNum2YBlock(currMBNum,comp,picSizeX) \
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MBxy2YBlock(xPosMB((currMBNum),(picSizeX)),yPosMB((currMBNum),(picSizeX)),(comp),(picSizeX))
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/*
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* typedefs
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*/
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/* segment data structure */
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typedef struct ercSegment_s
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{
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int startMBPos;
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int endMBPos;
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int fCorrupted;
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} ercSegment_t;
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/* Error detector & concealment instance data structure */
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typedef struct ercVariables_s
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{
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/* Number of macroblocks (size or size/4 of the arrays) */
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int nOfMBs;
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/* Number of segments (slices) in frame */
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int nOfSegments;
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/* Array for conditions of Y blocks */
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int *yCondition;
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/* Array for conditions of U blocks */
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int *uCondition;
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/* Array for conditions of V blocks */
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int *vCondition;
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/* Array for Slice level information */
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ercSegment_t *segments;
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int currSegment;
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/* Conditions of the MBs of the previous frame */
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int *prevFrameYCondition;
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/* Flag telling if the current segment was found to be corrupted */
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int currSegmentCorrupted;
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/* Counter for corrupted segments per picture */
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int nOfCorruptedSegments;
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/* State variables for error detector and concealer */
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int concealment;
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} ercVariables_t;
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/*
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* External function interface
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*/
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void ercInit(VideoParameters *p_Vid, int pic_sizex, int pic_sizey, int flag);
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ercVariables_t *ercOpen( void );
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void ercReset( ercVariables_t *errorVar, int nOfMBs, int numOfSegments, int picSizeX );
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void ercClose( VideoParameters *p_Vid, ercVariables_t *errorVar );
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void ercSetErrorConcealment( ercVariables_t *errorVar, int value );
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void ercStartSegment( int currMBNum, int segment, unsigned int bitPos, ercVariables_t *errorVar );
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void ercStopSegment( int currMBNum, int segment, unsigned int bitPos, ercVariables_t *errorVar );
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void ercMarkCurrSegmentLost(int picSizeX, ercVariables_t *errorVar );
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void ercMarkCurrSegmentOK(int picSizeX, ercVariables_t *errorVar );
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void ercMarkCurrMBConcealed( int currMBNum, int comp, int picSizeX, ercVariables_t *errorVar );
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int ercConcealIntraFrame( VideoParameters *p_Vid, frame *recfr, int picSizeX, int picSizeY, ercVariables_t *errorVar );
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int ercConcealInterFrame( frame *recfr, objectBuffer_t *object_list,
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int picSizeX, int picSizeY, ercVariables_t *errorVar, int chroma_format_idc );
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/* Thomson APIs for concealing entire frame loss */
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#include "mbuffer.h"
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#include "output.h"
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struct concealment_node {
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StorablePicture* picture;
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int missingpocs;
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struct concealment_node *next;
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};
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extern struct concealment_node * init_node(StorablePicture* , int );
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extern void print_node( struct concealment_node * );
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extern void print_list( struct concealment_node * );
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extern void init_lists_for_non_reference_loss(VideoParameters *p_Vid, int , PictureStructure );
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extern void conceal_non_ref_pics(VideoParameters *p_Vid, int diff);
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extern void conceal_lost_frames(VideoParameters *p_Vid);
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extern void sliding_window_poc_management(DecodedPictureBuffer *p_Dpb, StorablePicture *p);
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extern void write_lost_non_ref_pic(VideoParameters *p_Vid, int poc);
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extern void write_lost_ref_after_idr(VideoParameters *p_Vid, int pos);
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extern int comp(const void *, const void *);
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#endif
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