/*

* Copyright (c) 2010 Ixonos Plc.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - Initial contribution

*

* Contributors:

* Ixonos Plc

*

* Description:  

* Header for the aic (Advanced Intra Coding) module.

*

*/

#ifndef _VDCAIC_H_

#define _VDCAIC_H_

#include "epoclib.h"

/*

 * Structs and typedefs

 */

typedef struct {

    int16 *qpStore;    /* storage place for the QP values of MBs in the 

                           previous and current MB line */

    int ***dcStore;    /* storage place for the DC and first horizontal 

                           and vertical line of AC coefficients of the 

                           4+1+1 blocks of the MBs in the previous and 

                           current MB line */

    int numMBsInMBLine; /* number of MBs in a MB line for the calculation 

                           of the internal sorage index from currMBNum */

    int Xpos[6];        /* indexed by block number (0..5) of an MB gives 

                           relative MB index of left neighbor block */

    int Ypos[6];        /* indexed by block number (0..5) of an MB gives 

                           relative MB index of top neighbor block */

    int Xtab[6];        /* indexed by block number (0..5) of an MB gives 

                           block number of left neighbor block */

    int Ytab[6];        /* indexed by block number (0..5) of an MB gives 

                           block number of top neighbor block */

    int Ztab[6];        /* indexed by block number (0..5) of an MB gives 

                           block number of top-left neighbor block */

    u_char ACpred_flag; /* ON(1): AC prediction is used, OFF(0): only DC */

    int midGrey;       /* the grey value used for prediction direction

                           decision if prediction block is not available */

} aicData_t;

/*

 * Prototypes

 */

   void aicStart (aicData_t *aicData, int numMBsInMBLine, int16 *error);

   void aicFree (aicData_t *aicData);

   void aicBlockUpdate (aicData_t *aicData, int currMBNum, int blockNum, int *block,

                        int pquant, int DC_coeff);

   int aicIsBlockValid (aicData_t *aicData, int currMBNum);

   void aicDCACrecon (aicData_t *aicData, int QP, u_char fTopMBMissing, u_char fLeftMBMissing,

                      u_char fBBlockOut, int blockNum, int *qBlock, int currMBNum);

   int aicDCScaler (int QP, int type);

   u_char aicIntraDCSwitch (int intraDCVLCThr, int QP);

#endif

// End of File