/*!
 * \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	encoder_context.h
 *
 * \brief	Main pData to be operated over Wels encoder all modules
 *
 * \date	2/4/2009 Created
 *
 *************************************************************************************
 */
#ifndef WELS_ENCODER_CONTEXT_H__
#define WELS_ENCODER_CONTEXT_H__

#include <stdio.h>
#include "typedefs.h"
#include "param_svc.h"
#include "nal_encap.h"
#include "picture.h"
#include "dq_map.h"
#include "stat.h"
#include "macros.h"
#include "rc.h"
#include "as264_common.h"
#include "wels_preprocess.h"
#include "wels_func_ptr_def.h"

#ifdef MT_ENABLED
#include "mt_defs.h"	// for multiple threadin,
#include "WelsThreadLib.h"
#endif//MT_ENALBED

namespace WelsSVCEnc {

/*
 *	reference list for each quality layer in SVC
 */
typedef struct TagRefList {
  SPicture*					pShortRefList[1 + MAX_SHORT_REF_COUNT]; // reference list 0 - int16_t
  SPicture*					pLongRefList[1 + MAX_LONG_REF_COUNT];	// reference list 1 - int32_t
  SPicture*					pNextBuffer;
  SPicture*					pRef[1 + MAX_REF_PIC_COUNT];	// plus 1 for swap intend
  uint8_t						uiShortRefCount;
  uint8_t						uiLongRefCount;	// dependend on pRef pic module
} SRefList;

typedef struct TagLTRState {
  // LTR mark feedback
  uint32_t		    		uiLtrMarkState;	// LTR mark state, indicate whether there is a LTR mark feedback unsolved
  int32_t						iLtrMarkFbFrameNum;// the unsolved LTR mark feedback, the marked iFrameNum feedback from decoder

  // LTR used as recovery reference
  int32_t						iLastRecoverFrameNum; // reserve the last LTR or IDR recover iFrameNum
  int32_t
  iLastCorFrameNumDec; // reserved the last correct position in decoder side, use to select valid LTR to recover or to decide the LTR mark validation
  int32_t
  iCurFrameNumInDec; // current iFrameNum in decoder side, use to select valid LTR to recover or to decide the LTR mark validation

  // LTR mark
  int32_t						iLTRMarkMode; // direct mark or delay mark
  int32_t						iLTRMarkSuccessNum; //successful marked num, for mark mode switch
  int32_t						iCurLtrIdx;// current int32_t term reference index to mark
  int32_t						iLastLtrIdx;
  uint32_t					uiLtrMarkInterval;// the interval from the last int32_t term pRef mark

  bool_t						bLTRMarkingFlag;	//decide whether current frame marked as LTR
  bool_t						bLTRMarkEnable; //when LTR is confirmed and the interval is no smaller than the marking period
  bool_t						bReceivedT0LostFlag;	// indicate whether a t0 lost feedback is recieved, for LTR recovery
} SLTRState;

typedef struct TagSpatialPicIndex {
  SPicture*	pSrc;	// I420 based and after color space converted
  int32_t		iDid;	// dependency id
} SSpatialPicIndex;

typedef struct TagStrideTables {
  int32_t*		pStrideDecBlockOffset[MAX_DEPENDENCY_LAYER][2];	// [iDid][tid==0][24 x 4]: luma+chroma= 24 x 4
  int32_t*		pStrideEncBlockOffset[MAX_DEPENDENCY_LAYER];		// [iDid][24 x 4]: luma+chroma= 24 x 4
  int16_t*		pMbIndexX[MAX_DEPENDENCY_LAYER];					// [iDid][iMbX]: map for iMbX in each spatial layer coding
  int16_t*		pMbIndexY[MAX_DEPENDENCY_LAYER];					// [iDid][iMbY]: map for iMbY in each spatial layer coding
} SStrideTables;

typedef struct TagWelsEncCtx {
  // Input
  SWelsSvcCodingParam*		pSvcParam;	// SVC parameter, WelsSVCParamConfig in svc_param_settings.h
  SWelsSliceBs*		 	pSliceBs;		// bitstream buffering for various slices, [uiSliceIdx]

  int32_t*					pSadCostMb;
  /* MVD cost tables for Inter MB */
  uint16_t*					pMvdCostTableInter; //[52];	// adaptive to spatial layers
  SMVUnitXY*
  pMvUnitBlock4x4;	// (*pMvUnitBlock4x4[2])[MB_BLOCK4x4_NUM];	    // for store each 4x4 blocks' mv unit, the two swap after different d layer
  int8_t*
  pRefIndexBlock4x4;	// (*pRefIndexBlock4x4[2])[MB_BLOCK8x8_NUM];	    // for store each 4x4 blocks' pRef index, the two swap after different d layer
  int8_t*                      pNonZeroCountBlocks;	// (*pNonZeroCountBlocks)[MB_LUMA_CHROMA_BLOCK4x4_NUM];
  int8_t*
  pIntra4x4PredModeBlocks;	// (*pIntra4x4PredModeBlocks)[INTRA_4x4_MODE_NUM];  //last byte is not used; the first 4 byte is for the bottom 12,13,14,15 4x4 block intra mode, and 3 byte for (3,7,11)

  SMB**                          ppMbListD;	// [MAX_DEPENDENCY_LAYER];
  SStrideTables*				pStrideTab;	// stride tables for internal coding used
  SWelsFuncPtrList*			pFuncList;

#if defined(MT_ENABLED)
  SSliceThreading*				pSliceThreading;
#endif//MT_ENABLED

  // SSlice context
  SSliceCtx*				pSliceCtxList;// slice context table for each dependency quality layer
  // pointers
  SPicture*					pEncPic;			// pointer to current picture to be encoded
  SPicture*					pDecPic;			// pointer to current picture being reconstructed
  SPicture*					pRefPic;			// pointer to current reference picture

  SDqLayer*
  pCurDqLayer;				// DQ layer context used to being encoded currently, for reference base layer to refer: pCurDqLayer->pRefLayer if applicable
  SDqLayer**					ppDqLayerList;			// overall DQ layers encoded for storage

  SRefList**					ppRefPicListExt;		// reference picture list for SVC
  SPicture*					pRefList0[16];
  SLTRState*					pLtr;//[MAX_DEPENDENCY_LAYER];

  // Derived
  int32_t						iCodingIndex;
  int32_t						iFrameIndex;			// count how many frames elapsed during coding context currently
  uint32_t					uiFrameIdxRc;           //only for RC
  int32_t						iFrameNum;				// current frame number coding
  int32_t						iPOC;					// frame iPOC
  EWelsSliceType				eSliceType;			// currently coding slice type
  EWelsNalUnitType			eNalType;			// NAL type
  EWelsNalRefIdc				eNalPriority;		// NAL_Reference_Idc currently
  EWelsNalRefIdc				eLastNalPriority;	// NAL_Reference_Idc in last frame
  uint8_t						iNumRef0;

  uint8_t						uiDependencyId;	// Idc of dependecy layer to be coded
  uint8_t						uiTemporalId;	// Idc of temporal layer to be coded
  bool_t						bNeedPrefixNalFlag;	// whether add prefix nal
  bool_t                      bEncCurFrmAsIdrFlag;

  // Rate control routine
  SWelsSvcRc*					pWelsSvcRc;
  int32_t						iSkipFrameFlag; //_GOM_RC_
  int32_t						iGlobalQp;		// global qp

  // VAA
  SVAAFrameInfo*		    	pVaa;		    // VAA information of reference
  CWelsPreProcess*				pVpp;

  SWelsSPS*							pSpsArray;		// MAX_SPS_COUNT by standard compatible
  SWelsSPS*							pSps;
  SWelsPPS*							pPPSArray;		// MAX_PPS_COUNT by standard compatible
  SWelsPPS*							pPps;
  /* SVC only */
  SSubsetSps*					pSubsetArray;	// MAX_SPS_COUNT by standard compatible
  SSubsetSps*					pSubsetSps;
  int32_t						iSpsNum;	// number of pSps used
  int32_t						iPpsNum;	// number of pPps used

  // Output
  SWelsEncoderOutput*			pOut;			// for NAL raw pData (need allocating memory for sNalList internal)
  uint8_t*						pFrameBs;		// restoring bitstream pBuffer of all NALs in a frame
  int32_t						iFrameBsSize;	// count size of frame bs in bytes allocated
  int32_t						iPosBsBuffer;	// current writing position of frame bs pBuffer

  /* For Downsampling & VAA I420 based source pictures */
  SPicture*					pSpatialPic[MAX_DEPENDENCY_LAYER][MAX_TEMPORAL_LEVEL + 1 +
      LONG_TERM_REF_NUM];	// need memory requirement with total number of (log2(uiGopSize)+1+1+long_term_ref_num)

  SSpatialPicIndex			sSpatialIndexMap[MAX_DEPENDENCY_LAYER];
  uint8_t						uiSpatialLayersInTemporal[MAX_DEPENDENCY_LAYER];

  uint8_t                     uiSpatialPicNum[MAX_DEPENDENCY_LAYER];
  bool_t						bLongTermRefFlag[MAX_DEPENDENCY_LAYER][MAX_TEMPORAL_LEVEL + 1/*+LONG_TERM_REF_NUM*/];

  int16_t						iMaxSliceCount;// maximal count number of slices for all layers observation
  int16_t						iActiveThreadsNum;	// number of threads active so far

  /*
   * DQ layer idc map for svc encoding, might be a better scheme than that of design before,
   * can aware idc of referencing layer and that idc of successive layer to be coded
   */
  /* SVC only */
  SDqIdc*
  pDqIdcMap;	// overall DQ map of full scalability in specific frame (All full D/T/Q layers involved)												// pDqIdcMap[dq_index] for each SDqIdc pData

  SParaSetOffset				sPSOVector;
  CMemoryAlign*				pMemAlign;

#ifdef ENABLE_TRACE_FILE
  FILE*						pFileLog;		// log file for wels encoder
  uint32_t					uiSizeLog;		// size of log have been written in file

#endif//ENABLE_TRACE_FILE

#if defined(STAT_OUTPUT)
  // overall stat pData, refer to SStatData in stat.h, in case avc to use stat[0][0]
  SStatData					sStatData [ MAX_DEPENDENCY_LAYER ] [ MAX_QUALITY_LEVEL ];
  SStatSliceInfo				sPerInfo;
#endif//STAT_OUTPUT

} sWelsEncCtx/*, *PWelsEncCtx*/;
}
#endif//sWelsEncCtx_H__