basesurf.cpp

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

    if (HXR_OK == m_pContext->QueryInterface(IID_IHXPreferences,(void**)&pPreferences))
    {   
        if (pPreferences->ReadPref("VideoBoost\\Y0", pBuffer) == HXR_OK)
        {
            Y[0] = ::atoi((char*) pBuffer->GetBuffer());
            HX_RELEASE(pBuffer);
        }

        if (pPreferences->ReadPref("VideoBoost\\Y1", pBuffer) == HXR_OK)
        {
            Y[1] = ::atoi((char*) pBuffer->GetBuffer());
            HX_RELEASE(pBuffer);
        }

        if (pPreferences->ReadPref("VideoBoost\\Cb", pBuffer) == HXR_OK)
        {
            Cb = ::atoi((char*) pBuffer->GetBuffer());
            HX_RELEASE(pBuffer);
        }

        if (pPreferences->ReadPref("VideoBoost\\Cr", pBuffer) == HXR_OK)
        {
            Cr = ::atoi((char*) pBuffer->GetBuffer());
            HX_RELEASE(pBuffer);
        }

        HX_RELEASE(pPreferences);
    }

    
    UCHAR* pTemp = pY;

    for (int i=0; i<nImageHeight; i++)
    {
        // Draw a line of y for each column
        for (int j=0; j<COLS; j++)
        {
            memset(pTemp, Y[j%2], nColWidth);
            pTemp += nColWidth;
        }

        // Move y pointer to next row
        pTemp = pY + nYPitch*(i+1);

        // Swap y colors at each new row
        if (i%nRowWidth == 0)
        {
            int nTemp = Y[0];
            Y[0] = Y[1];
            Y[1] = nTemp;
        }
    }

    // Draw the Cr and Cb planes
    memset(pU, Cb, nImageWidth*nImageHeight/4);
    memset(pV, Cr, nImageWidth*nImageHeight/4);
}
#endif //0

HXREGION* CBaseSurface::_DetermineBestRegion()
{
    HXRECTANGLE rect;
    ImageBlock* pBlock = NULL;

    //Create a region from out image block list.
    HXREGION* pRetReg = HXCreateRegion();
    CHXSimpleList::Iterator j = m_imageBlocks.Begin();
    while(j != m_imageBlocks.End())
    {
        pBlock = (ImageBlock*)*j;
        rect.x      = (short)pBlock->rect.left;
        rect.y      = (short)pBlock->rect.top;
        rect.width  = (short)(pBlock->rect.right-pBlock->rect.left);
        rect.height = (short)(pBlock->rect.bottom-pBlock->rect.top);
        HXUnionRectWithRegion( &rect, pRetReg, pRetReg );
        ++j;
    }
    
    return pRetReg;
}




void CBaseSurface::_RemoveYUVImageLists()
{
    m_pSite->_TLSLock();
    
    CHXSimpleList::Iterator jj = m_imageBlocks.Begin();
    while(jj != m_imageBlocks.End())
    {
        ImageBlock* pXBlock = (ImageBlock*)*jj;
        Image* pXTmp = pXBlock->pImage;
        HX_FREE(pXTmp->pucImage);
        HX_DELETE(pXTmp);
        HX_DELETE(pXBlock);
        ++jj;
    }
    m_imageBlocks.RemoveAll();
    m_bImageBlocksGood = FALSE;

    CHXMapPtrToPtr::Iterator i = m_YUVAImageList.Begin();
    while(i != m_YUVAImageList.End())
    {
        Image* pImage = (Image*)*i;
        HX_DELETE(pImage->pucImage);
        HX_DELETE(pImage);
        ++i;
    }
    m_YUVAImageList.RemoveAll();

    m_pSite->_TLSUnlock();
}


CHXBaseSite* CBaseSurface::_SearchForYUV(CHXBaseSite* pTopSite)
{
    HX_ASSERT( pTopSite );
    CHXBaseSite* pRetSite = NULL;
    CHXMapPtrToPtr::Iterator i;
    CBaseSurface* pSurf = pTopSite->m_pVideoSurface;
    
    if( pSurf )
    {
        int nCID2 = GETBITMAPCOLOR(&(pSurf->m_bmiLastBlt));
        if( IsYUV(nCID2) && pSurf->_IsDisplaySurfaceYuv())
        {
            pRetSite = pTopSite;
        }
    }

    if( !pRetSite )
    {
        //If the one passed in isn't any good, we need to go through its
        //lists of alphablend sites and so on.
        for( i=pTopSite->m_AlphaBlendSites.Begin() ;
             i!=pTopSite->m_AlphaBlendSites.End() && !pRetSite ;
             ++i)
        {
            CHXBaseSite* pSite = (CHXBaseSite*) i.get_key();
            pRetSite = _SearchForYUV( pSite );
        }
    }
    
    return pRetSite;
}


BOOL CBaseSurface::_BlendYUVRects( AlphaStruct* pList, int nCount, UINT32 ulDestFourCC)
{
    BOOL bBlend = TRUE;

    //These rects in pList *must* match the ones in m_imageBlocks.
    //If they don't, time for recompute clip again.
    CHXSimpleList::Iterator g = m_imageBlocks.Begin();
    int i=0;
    while(g != m_imageBlocks.End() )
    {
        ImageBlock*   pBlockOut = (ImageBlock*)*g;
        Image*        pImageOut = pBlockOut->pImage;
        CHXBaseSite*  pSite     = pBlockOut->pSrcSite;
        Image*        pImage    = NULL;

        //Find ourselves in that site's YUV list.
        CHXBaseSite* pTmp = NULL;
        CHXMapPtrToPtr::Iterator j = pSite->m_pVideoSurface->m_YUVAImageList.Begin();
        while( j!=pSite->m_pVideoSurface->m_YUVAImageList.End() )
        {
            pTmp = (CHXBaseSite*)j.get_key();
            if( pTmp == m_pSite )
            {
                pImage = (Image*)*j;
                break;
            }
            ++j;
        }
        //HX_ASSERT( pImage );
        if( pImage)
        {
            //Blend pList[i] under AYUV and put in pTmp
            int nSizeX = pBlockOut->rect.right-pBlockOut->rect.left;
            int nSizeY = pBlockOut->rect.bottom-pBlockOut->rect.top;

            //int nPImageDataPitch = GETBITMAPPITCH(pList[i].lPitch);
            int nPImageOutPitch  = GETBITMAPPITCH(&pImageOut->bmiImage);
            int nPImagePitch     = GETBITMAPPITCH(&pImage->bmiImage);
            
            // These rects should match...might crash if they don't
            if( nSizeX > pImage->bmiImage.biWidth || 
                nSizeX > pImageOut->bmiImage.biWidth ||
                nSizeX > HXxRECT_WIDTH(pList[i].rcImageRect) )
            {
                bBlend = FALSE;
            } 
            if( nSizeY > pImage->bmiImage.biHeight || 
                nSizeY > pImageOut->bmiImage.biHeight ||
                nSizeY > HXxRECT_HEIGHT(pList[i].rcImageRect) )
            {
                bBlend = FALSE;
            }

            if( pBlockOut->startX<0 || pBlockOut->startY<0 )
            {
                bBlend = FALSE;
            }
            
            if (bBlend)
            {
                HX_RESULT hr = zm_pColorAcc->I420andYUVA(
                    pList[i].pBuffer,
                    pList[i].ulImageWidth, pList[i].ulImageHeight,
                    pList[i].lPitch,
                    pList[i].rcImageRect.left,
                    pList[i].rcImageRect.top,
                    //pBlockOut->rect.left, pBlockOut->rect.top,
                    pImage->pucImage,
                    pImage->bmiImage.biWidth, pImage->bmiImage.biHeight,
                    nPImagePitch,
                    pBlockOut->startX, pBlockOut->startY,
                    pImageOut->pucImage,
                    pImageOut->bmiImage.biWidth, pImageOut->bmiImage.biHeight,
                    nPImageOutPitch,
                    0, 0,
                    nSizeX, nSizeY,
                    MapFourCCtoCID(ulDestFourCC)
                    );
                bBlend = hr==HXR_OK;

                
                //Now keep drawing up the line through all
                //overlapping ARGB images.
                pSite->m_pVideoSurface->_RecursiveYUVBlend( pImageOut,
                                                            pBlockOut->rect,
                                                            this, 0, 0);
            }

            i++;
        }
        ++g;
    }
    return bBlend;
}

BOOL CBaseSurface::_DoYUVRectsIntersect()
{
    BOOL bBlend = FALSE;
    CHXMapPtrToPtr::Iterator i;

    while( i != m_pSite->m_AlphaBlendNotifiers.End() && !bBlend )
    {
        CHXBaseSite* pSite = (CHXBaseSite*)*i;
        if( pSite->m_AlphaBlendNotifiers.GetCount() )
        {
            bBlend = TRUE;
        }
    }
    return bBlend;
}

BOOL CBaseSurface::_RecursiveYUVBlend( Image* pImageOut,
                                       HXxRect boundingRect,
                                       CBaseSurface* pSurface,
                                       INT32 lXOffset,
                                       INT32 lYOffset)
{
    BOOL bRetVal = FALSE;
    CHXMapPtrToPtr::Iterator i;

    if( m_pSite->m_AlphaBlendNotifiers.GetCount()==0 )
    {
        return bRetVal;
    }
    
    for( i=m_pSite->m_AlphaBlendNotifiers.Begin() ;
         i!=m_pSite->m_AlphaBlendNotifiers.End()  ;
         ++i)
    {
        CHXBaseSite* pSite = (CHXBaseSite*)*i;
        HXREGION* pReg = NULL;
            
        //Find the region we need to blend with.
        CHXMapPtrToPtr::Iterator j = pSite->m_AlphaBlendSites.Begin();
        CHXBaseSite* pTmp = NULL;
        while( j != pSite->m_AlphaBlendSites.End() && pTmp != m_pSite )
        {
            pTmp = (CHXBaseSite*)j.get_key();
            if( pTmp == m_pSite )
            {
                pReg = (HXREGION*)*j;
                break;
            }
            ++j;
        }

        //Hmmmm, something is probably wrong here...
        if( HXEmptyRegion(pReg) )
        {
            HX_ASSERT("oops"==NULL);
            break;
        }

        //Find the YUVA buffer we need to blend against....
        Image* pImage = NULL;
        j = pSite->m_pVideoSurface->m_YUVAImageList.Begin();
        pTmp = NULL;
        while( j!=pSite->m_pVideoSurface->m_YUVAImageList.End() )
        {
            pTmp = (CHXBaseSite*)j.get_key();
            if( pTmp == m_pSite )
            {
                pImage = (Image*)*j;
                break;
            }
            ++j;
        }
            
        //Now blend with this image....
        if( pReg && pImage )
        {
            bRetVal = TRUE;

            //blend by extents, blt by rects, and save for Blt().
            for(int nIdx=0 ; nIdx<pReg->numRects ; nIdx++ )
            {
                HXxRect BlockOut;
                BlockOut.left   = pReg->rects[nIdx].x1;
                BlockOut.top    = pReg->rects[nIdx].y1;
                BlockOut.right  = pReg->rects[nIdx].x2;
                BlockOut.bottom = pReg->rects[nIdx].y2;


                //Downscale all rects....
                double scaleX = 1;
                double scaleY = 1;

                scaleX = pSurface->m_scaleFactorX/pSite->m_pVideoSurface->m_scaleFactorX;
                scaleY = pSurface->m_scaleFactorY/pSite->m_pVideoSurface->m_scaleFactorY;

                //We must restrict this region to just the part that
                //overlaps the actuall YUV surface...
                int tlx = (int)((double)(m_pSite->m_topleft.x)/scaleX+.5);
                int tly = (int)((double)(m_pSite->m_topleft.y)/scaleY+.5);
                int xx = tlx - boundingRect.left;
                int yy = tly - boundingRect.top;
                
                if( (int)(BlockOut.left/scaleX+.5) < boundingRect.left )
                    BlockOut.left = (INT32)(boundingRect.left*scaleX+.5);
                if( (int)(BlockOut.top/scaleY+.5) < boundingRect.top )
                    BlockOut.top = (INT32)(boundingRect.top*scaleY+.5);
                if( (int)(BlockOut.right/scaleX+.5) > boundingRect.right )
                    BlockOut.right = (INT32)(boundingRect.right*scaleX+.5);
                if( (int)(BlockOut.bottom/scaleY+.5) > boundingRect.bottom )
                    BlockOut.bottom = (INT32)(boundingRect.bottom*scaleY+.5);

                BlockOut.left   =
                    (int)((double)(BlockOut.left-m_pSite->m_topleft.x)/scaleX+.5);
                BlockOut.top    =
                    (int)((double)(BlockOut.top-m_pSite->m_topleft.y)/scaleY+.5);