linux-arkmicro/buildroot-external/package/hx170dec/software/src/mp4dechwd_error_conceal.c

/*------------------------------------------------------------------------------
--                                                                            --
--       This software is confidential and proprietary and may be used        --
--        only as expressly authorized by a licensing agreement from          --
--                                                                            --
--                            Hantro Products Oy.                             --
--                                                                            --
--                   (C) COPYRIGHT 2006 HANTRO PRODUCTS OY                    --
--                            ALL RIGHTS RESERVED                             --
--                                                                            --
--                 The entire notice above must be reproduced                 --
--                  on all copies and should not be removed.                  --
--                                                                            --
--------------------------------------------------------------------------------
--
--  Abstract : error concealment
--
--------------------------------------------------------------------------------
--
--  Version control information, please leave untouched.
--
--  $RCSfile: mp4dechwd_error_conceal.c,v $
--  $Date: 2007/11/26 09:57:02 $
--  $Revision: 1.3 $
--
------------------------------------------------------------------------------*/
/*------------------------------------------------------------------------------

    Table of context

     1. Include headers
     2. External identifiers
     3. Module defines
     4. Module identifiers
     5. Fuctions

------------------------------------------------------------------------------*/
/*------------------------------------------------------------------------------
    1. Include headers
------------------------------------------------------------------------------*/
#include "mp4dechwd_container.h"
#include "mp4dechwd_error_conceal.h"
#include "mp4dechwd_utils.h"
#include "mp4debug.h"

/*------------------------------------------------------------------------------
    2. External identifiers
------------------------------------------------------------------------------*/
/*------------------------------------------------------------------------------
    3. Module defines
------------------------------------------------------------------------------*/

enum
{
    MASK_BIT0 = 0x1,
    MASK_BIT1 = 0x2
};

enum
{
    EC_ABOVE,
    EC_ABOVELEFT,
    EC_ABOVERIGHT,
    EC_NOCANDO
};

/*------------------------------------------------------------------------------
    4. Module indentifiers
------------------------------------------------------------------------------*/

static void PConcealment(DecContainer * pDecCont, u32 mbNumber);

static void IConcealment(DecContainer * pDecCont, u32 mbNumber);

static void ITextureConcealment(DecContainer * pDecCont, u32 mbNumber);

static void MotionVectorConcealment(DecContainer *, u32);

/*------------------------------------------------------------------------------

   5.1  Function name: StrmDec_ErrorConcealment

        Purpose:

        Input:

        Output:

------------------------------------------------------------------------------*/
u32 StrmDec_ErrorConcealment(DecContainer * pDecContainer, u32 start,
    u32 end)
{

    extern const u8 asicPosNoRlc[6];
    u32 i, j;

    u32 vopCodingType = 0;
    u32 controlBits = 0;
    u32 *pCtrl;

    ASSERT(end <= pDecContainer->VopDesc.totalMbInVop);
    ASSERT(start <= end);

    MP4DEC_API_DEBUG(("ErrorConcealment # %d end \n", end));
    vopCodingType = pDecContainer->VopDesc.vopCodingType;

    /* qp to control word */
    controlBits = (u32) (31 & 0x1F) << ASICPOS_QP;
    /* set block type to inter */
    controlBits |= ((u32) 1 << ASICPOS_MBTYPE);

    controlBits |= ((u32) 1 << ASICPOS_CONCEAL);

    controlBits |= ((u32) 1 << ASICPOS_MBNOTCODED);

    for(j = 0; j < 6; j++)
    {
        controlBits |= (1 << asicPosNoRlc[j]);
    }

    for(i = start; i <= end; i++)
    {

        /* pointer to control */
        pCtrl = pDecContainer->MbSetDesc.pCtrlDataAddr + i * NBR_OF_WORDS_MB;
        /* video package boundary */
        if((i == pDecContainer->StrmStorage.vpMbNumber) &&
           (pDecContainer->StrmStorage.shortVideo == HANTRO_FALSE))
        {
            controlBits |= (1 << ASICPOS_VPBI);
        }

        /* write control bits */
        *pCtrl = controlBits;

        if( ( (vopCodingType == PVOP) ||
              (pDecContainer->StrmStorage.validVopHeader == HANTRO_FALSE) ) &&
            pDecContainer->VopDesc.vopNumber)
        {
            PConcealment(pDecContainer, i);
        }
        else if(vopCodingType == IVOP)
        {
            IConcealment(pDecContainer, i);
            ITextureConcealment(pDecContainer, i);
        }

    }

    /* update number of concealed blocks */
    pDecContainer->StrmStorage.numErrMbs += end - start + 1;

    return (EC_OK);
}

/*------------------------------------------------------------------------------

   5.2  Function name:PConcealment

        Purpose:

        Input:

        Output:

------------------------------------------------------------------------------*/

static void PConcealment(DecContainer * pDecContainer, u32 mbNumber)
{
    MotionVectorConcealment(pDecContainer, mbNumber);

    pDecContainer->MBDesc[mbNumber].errorStatus |= 0x80;
    pDecContainer->MBDesc[mbNumber].typeOfMB = MB_INTER;

}

/*------------------------------------------------------------------------------

   5.4  Function name:IConcealment;

        Purpose:

        Input:

        Output:

------------------------------------------------------------------------------*/

static void IConcealment(DecContainer * pDecContainer, u32 mbNumber)
{

    pDecContainer->MBDesc[mbNumber].errorStatus |= 0x80;
    pDecContainer->MBDesc[mbNumber].typeOfMB = MB_INTRA;

}

/*------------------------------------------------------------------------------

   5.5  Function name: ITextureConcealment

        Purpose: i-vop texture concealment

        Input:

        Output:

------------------------------------------------------------------------------*/
static void ITextureConcealment(DecContainer * pDecContainer, u32 mbNumber)
{

    u32 *pCtrl;
    u32 tmp = 0;

    /* pointer to last word of control bits of first block */
    pCtrl = pDecContainer->MbSetDesc.pCtrlDataAddr + mbNumber * NBR_OF_WORDS_MB;

    tmp = (((u32) 1 << ASICPOS_ACPREDFLAG) | ((u32) 1 << ASICPOS_MBTYPE));

    *pCtrl &= ~(tmp);

    pDecContainer->MBDesc[mbNumber].errorStatus |= 0x80;

}

/*------------------------------------------------------------------------------

   5.6  Function name: MotionVectorConcealment

        Purpose:

        Input:

        Output:

------------------------------------------------------------------------------*/
static void MotionVectorConcealment(DecContainer * pDecContainer,
                                    u32 mbNumber)
{

    *(pDecContainer->MbSetDesc.pMvDataAddr + mbNumber*NBR_MV_WORDS_MB) = 0;
    *(pDecContainer->MbSetDesc.pMvDataAddr + mbNumber*NBR_MV_WORDS_MB + 1) = 0;
    *(pDecContainer->MbSetDesc.pMvDataAddr + mbNumber*NBR_MV_WORDS_MB + 2) = 0;
    *(pDecContainer->MbSetDesc.pMvDataAddr + mbNumber*NBR_MV_WORDS_MB + 3) = 0;

}