brushrnd.cpp

来自「linux下的一款播放器」· C++ 代码 · 共 538 行 · 第 1/2 页

STDMETHODIMP CBrushRenderer::GetWindowSize(REF(HXxSize) rSize)
{
    rSize.cx = 1;
    rSize.cy = 1;

    return HXR_OK;
}

STDMETHODIMP CBrushRenderer::IsMouseOverActiveLink(INT16 x, INT16 y, REF(BOOL) rbActive, REF(IHXBuffer*) rpLink)
{
    HX_RESULT retVal = HXR_OK;

    rbActive = FALSE;

    return retVal;
}

STDMETHODIMP CBrushRenderer::RMASurfaceUpdate(IHXVideoSurface* pSurface)
{
    HX_RESULT retVal = HXR_FAIL;

    if (pSurface && m_pHeader && !m_bNullBrush)
    {
        retVal = SetupBuffer();
        if (SUCCEEDED(retVal))
        {
            // Set up the src and dst rect
            HXxRect rSrcRect = {0, 0, m_pHeader->biWidth, m_pHeader->biHeight};
            HXxRect rDstRect = rSrcRect;
            // Blit to the video surface
            retVal = pSurface->Blt(m_pucBuffer,
                                   m_pHeader,
                                   rDstRect,
                                   rSrcRect);
        }
    }

    return retVal;
}

STDMETHODIMP CBrushRenderer::HandleClick(INT16 x, INT16 y)
{
    return HXR_OK;
}

STDMETHODIMP CBrushRenderer::SetPropertyULONG32(const char* pName, ULONG32 ulVal)
{
    HX_RESULT retVal = HXR_OK;

    if (pName)
    {
        // Clear the flag
        BOOL bChromaKeyUpdate = FALSE;
        // Switch based on property name
        if (!strcmp(pName, "color"))
        {
            // Preserve the current alpha from the
            // color and set the color from ulVal
            m_ulColor = (m_ulColor & 0xFF000000) |
                        (ulVal     & 0x00FFFFFF);
        }
        else if (!strcmp(pName, "mediaOpacity") ||
                 !strcmp(pName, "backgroundOpacity"))
        {
            // Cap the opacity
            if (ulVal > 255) ulVal = 255;
            // Update the color
            m_ulColor = (m_ulColor             & 0x00FFFFFF) |
                        (((255 - ulVal) << 24) & 0xFF000000);
        }
        else if (!strcmp(pName, "chromaKey"))
        {
            // Save the value
            m_ulChromaKey         = ulVal;
            m_bChromaKeySpecified = TRUE;
            // We do need to update the color
            bChromaKeyUpdate = TRUE;

        }
        else if (!strcmp(pName, "chromaKeyTolerance"))
        {
            // Save the value
            m_ulChromaKeyTolerance = ulVal & 0x00FFFFFF;
            // If we have a chroma key already specified, then update
            if (m_bChromaKeySpecified)
            {
                bChromaKeyUpdate = TRUE;
            }
        }
        else if (!strcmp(pName, "chromaKeyOpacity"))
        {
            // Cap the value
            if (ulVal > 255) ulVal = 255;
            // Save the value
            m_ulChromaKeyOpacity = ulVal;
            // If we have a chroma key already specified, then update
            if (m_bChromaKeySpecified)
            {
                bChromaKeyUpdate = TRUE;
            }
        }
        // If we need to update the color because of
        // chroma key changes, then do it now
        if (bChromaKeyUpdate &&
            DoesChromaKeyMatch(m_ulColor, m_ulChromaKey, m_ulChromaKeyTolerance))
        {
            // Update the color
            m_ulColor = (m_ulColor & 0x00FFFFFF) |
                        (((255 - m_ulChromaKeyOpacity) << 24) & 0xFF000000);
        }
        // Now pass this on to our base class
        retVal = CRNBaseRenderer::SetPropertyULONG32(pName, ulVal);
    }
    else
    {
        retVal = HXR_FAIL;
    }

    return retVal;
}

HX_RESULT STDAPICALLTYPE CBrushRenderer::HXCreateInstance(IUnknown** ppIUnknown)
{
    HX_RESULT retVal = HXR_FAIL;

    if (ppIUnknown)
    {
        // Create the object
        CBrushRenderer* pObj = new CBrushRenderer();
        if (pObj)
        {
            // QI for IUnknown
            retVal = pObj->QueryInterface(IID_IUnknown, (void**) ppIUnknown);
        }
    }

    return retVal;
}

HX_RESULT STDAPICALLTYPE CBrushRenderer::CanUnload2()
{
    return ((CHXBaseCountingObject::ObjectsActive() > 0) ? HXR_FAIL : HXR_OK );
}

HX_RESULT CBrushRenderer::RMASurfaceUpdate2(IHXSubRectVideoSurface* pSurface,
                                            HXxRect*                 pExtents,
                                            HXxBoxRegion*              pDirtyRegion)
{
    HX_RESULT retVal = HXR_FAIL;

    if (pSurface && m_pHeader && !m_bNullBrush)
    {
        retVal = SetupBuffer();
        if (SUCCEEDED(retVal))
        {
            retVal = pSurface->BltSubRects(m_pucBuffer,
                                           m_pHeader,
                                           pDirtyRegion,
                                           pDirtyRegion,
                                           1.0,1.0 );
        }
    }

    return retVal;
}

void CBrushRenderer::_AttachSite()
{
    if (m_pSite)
    {
        // Subscribe to the sub rect messages, HX_SURFACE_UPDATE2.
        IHXSubRectSite* pSubRectSite = NULL;
        m_pSite->QueryInterface(IID_IHXSubRectSite, (void**) &pSubRectSite);
        if (pSubRectSite)
        {
            // If so, since IHXSubRectSite inheirits from IHXSite, lets
            // just swap the pointers and sign up for the service.
            HX_RELEASE(m_pSite);
            m_pSite = pSubRectSite;
            pSubRectSite->SendSubRectMessages(TRUE);
        }
    }
}

HX_RESULT CBrushRenderer::SetupBuffer()
{
    HX_RESULT retVal = HXR_FAIL;

    if (m_pSite && m_pHeader)
    {
        // Get the site's current size
        HXxSize cSize = {0, 0};
        m_pSite->GetSize(cSize);
        // Make sure the site has non-zero dimensions
        if (cSize.cx > 0 && cSize.cy > 0)
        {
            // Do we need to allocate a buffer?
            BOOL bAllocated = FALSE;
            if (!m_pucBuffer                    ||
                m_pHeader->biWidth  != cSize.cx ||
                m_pHeader->biHeight != cSize.cy)
            {
                UINT32 ulNumBytes = (UINT32) cSize.cx * cSize.cy * 4;
                HX_VECTOR_DELETE(m_pucBuffer);
                m_pucBuffer = new BYTE [ulNumBytes];
                if (m_pucBuffer)
                {
                    m_pHeader->biWidth     = cSize.cx;
                    m_pHeader->biHeight    = cSize.cy;
                    m_pHeader->biSizeImage = ulNumBytes;
                    bAllocated             = TRUE;
                }
            }
            if (m_pucBuffer)
            {
                // Do we need to fill in the color?
                if (bAllocated || m_ulLastColor != m_ulColor)
                {
                    // Fill in the buffer
                    UINT32  ulNumPix = (UINT32) cSize.cx * cSize.cy;
                    UINT32* pPix     = (UINT32*) m_pucBuffer;
                    while (ulNumPix--)
                    {
                        *pPix++ = m_ulColor;
                    }
                    // Save this color
                    m_ulLastColor = m_ulColor;
                    // Set the bitmap info header compression
                    m_pHeader->biCompression = (m_ulColor & 0xFF000000 ? HX_ARGB : HX_RGB);
                }
                // Clear the return value
                retVal = HXR_OK;
            }
        }
    }

    return retVal;
}

STDMETHODIMP CBrushRenderer::GetName(REF(const char*) rpszName)
{
    rpszName = (const char*) m_pszName;
    return HXR_OK;
}

STDMETHODIMP CBrushRenderer::GetDescription(REF(const char*) rpszDescription)
{
    rpszDescription = (const char*) m_pszDescription;
    return HXR_OK;
}

STDMETHODIMP CBrushRenderer::GetMimeTypes(REF(const char**) rppszMimeType)
{
    rppszMimeType = (const char**) m_ppszMimeType;
    return HXR_OK;
}

STDMETHODIMP_(UINT32) CBrushRenderer::GetPluginVersion()
{
    return TARVER_ULONG32_VERSION;
}

STDMETHODIMP_(UINT32) CBrushRenderer::GetInitialGranularity()
{
    return 200;
}