umc_vc1_dec_mb_interpolate.cpp

audio-video-codecs.rar语音编解码器

/* /////////////////////////////////////////////////////////////////////////////
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//          Copyright(c) 2004-2007 Intel Corporation. All Rights Reserved.
//
//
//          VC-1 (VC1) decoder, MB Layer common for simple\main profiles
//
*/
#include "umc_defs.h"

#if defined (UMC_ENABLE_VC1_VIDEO_DECODER)

#include "umc_vc1_dec_seq.h"
#include "umc_vc1_dec_debug.h"
#include "umc_vc1_common_defs.h"
#include "umc_vc1_common_blk_order_tbl.h"

void RangeRefFrame(VC1Context* pContext)
{
    Ipp32u index= pContext->m_frmBuff.m_iPrevIndex;
    IppiSize roiSize;
    Ipp32u width = ((pContext->m_seqLayerHeader->widthMB * VC1_PIXEL_IN_LUMA) & 0xFFFFFF80)+ 0x080;

    if(*pContext->m_frmBuff.m_pFrames[pContext->m_frmBuff.m_iCurrIndex].pRANGE_MAPY == -1
        && *pContext->m_frmBuff.m_pFrames[index].pRANGE_MAPY == 7)
    {
        roiSize.height = 2*(pContext->m_seqLayerHeader->MAX_CODED_HEIGHT+1) + 128;
        roiSize.width  = 2*(pContext->m_seqLayerHeader->MAX_CODED_WIDTH+1)  + 128;

       _own_ippiRangeMap_VC1_8u_C1R(pContext->m_frmBuff.m_pFrames[index].m_pY
           - 64*(width + 128) - 64,
            pContext->m_frmBuff.m_pFrames[index].m_iYPitch,
            pContext->m_frmBuff.m_pFrames[index].m_pY
            - 64*(width + 128) - 64,
            pContext->m_frmBuff.m_pFrames[index].m_iYPitch,
            roiSize,7);

        roiSize.height /=2;
        roiSize.width  /=2;
        width /=2;

        _own_ippiRangeMap_VC1_8u_C1R(pContext->m_frmBuff.m_pFrames[index].m_pV
            - 32*(width + 64) - 32,
            pContext->m_frmBuff.m_pFrames[index].m_iVPitch,
            pContext->m_frmBuff.m_pFrames[index].m_pV
            - 32*(width + 64) - 32,
            pContext->m_frmBuff.m_pFrames[index].m_iVPitch,
            roiSize,7);

        _own_ippiRangeMap_VC1_8u_C1R(pContext->m_frmBuff.m_pFrames[index].m_pU
            - 32*(width + 64) - 32,
            pContext->m_frmBuff.m_pFrames[index].m_iUPitch,
            pContext->m_frmBuff.m_pFrames[index].m_pU
            - 32*(width + 64) - 32,
            pContext->m_frmBuff.m_pFrames[index].m_iUPitch,
            roiSize,7);

        *pContext->m_frmBuff.m_pFrames[index].pRANGE_MAPY = -2;
    }
    else if(*pContext->m_frmBuff.m_pFrames[pContext->m_frmBuff.m_iCurrIndex].pRANGE_MAPY == 7
        && *pContext->m_frmBuff.m_pFrames[index].pRANGE_MAPY   == -1)
    {
       RangeDown(pContext->m_frmBuff.m_pFrames[index].m_pY
           - 64*(width + 128) - 64,
            pContext->m_frmBuff.m_pFrames[index].m_iYPitch,
            pContext->m_frmBuff.m_pFrames[index].m_pY
            - 64*(width + 128) - 64,
            pContext->m_frmBuff.m_pFrames[index].m_iYPitch,
            width + 128,
            2*(pContext->m_seqLayerHeader->MAX_CODED_HEIGHT+1) + 128);
       width /=2;

        RangeDown(pContext->m_frmBuff.m_pFrames[index].m_pV
            - 32*(width + 64) - 32,
            pContext->m_frmBuff.m_pFrames[index].m_iVPitch,
            pContext->m_frmBuff.m_pFrames[index].m_pV
            - 32*(width + 64) - 32,
            pContext->m_frmBuff.m_pFrames[index].m_iVPitch,
           width + 64,
            (pContext->m_seqLayerHeader->MAX_CODED_HEIGHT+1)+ 64);

        RangeDown(pContext->m_frmBuff.m_pFrames[index].m_pU
            - 32*(width + 64) - 32,
            pContext->m_frmBuff.m_pFrames[index].m_iUPitch,
            pContext->m_frmBuff.m_pFrames[index].m_pU
            - 32*(width + 64) - 32,
            pContext->m_frmBuff.m_pFrames[index].m_iUPitch,
            width + 64,
            (pContext->m_seqLayerHeader->MAX_CODED_HEIGHT+1)+ 64);

        *pContext->m_frmBuff.m_pFrames[index].pRANGE_MAPY = -2;
    }
}

void RangeDown(Ipp8u* pSrc, Ipp32s srcStep,
               Ipp8u* pDst, Ipp32s dstStep,
               Ipp32s width, Ipp32s height)
{
    //pData - frame poiinter
    //width - number pixels in raw
    //height - number pixels in column
    Ipp32s i=0;
    Ipp32s j=0;
    Ipp32s temp;

    for (i = 0; i < height; i++)
    {
        for (j = 0; j < width; j++)
        {
            temp = pSrc[i*srcStep+j];

            temp = ((temp - 128)>>1 ) + 128;
            pDst[i*dstStep+j] = (Ipp8u)temp;
        }
    }
}

#endif //UMC_ENABLE_VC1_VIDEO_DECODER