COPPCloseVideoSession function

Article
02/16/2018

The sample COPPCloseVideoSession function closes the COPP DirectX VA device object that is used for the current video session.

Syntax

HRESULT COPPCloseVideoSession(
  _In_ COPP_DeviceData pThis
);

Parameters

pThis [in]

Pointer to the COPP DirectX VA device object.

Return value

Returns zero (S_OK or DD_OK) if successful; otherwise, returns an error code.

Remarks

The COPPCloseVideoSession function can be called while output protection is still applied by the video session. COPPCloseVideoSession should undo the protection settings of the COPP DirectX VA device object and adjust the global protection settings accordingly.

The COPPCloseVideoSession function maps directly to the DestroyMoComp member of the DD_MOTIONCOMPCALLBACKS structure. The DestroyMoComp member points to the display driver-supplied DdMoCompDestroy callback function.

Example code

The following code provides an example of how you can implement your COPPCloseVideoSession function:

HRESULT
COPPCloseVideoSession(
    COPP_DeviceData* pThis
    )
{
    DWORD j, i;
    // enumerate all the protection types supported by this connector
    for (j = COPP_ProtectionType_HDCP, i = COPP_ProtectionTypeIndex_HDCP;
         j & COPP_ProtectionType_Mask; j <<= 1, i++) {
        // for each type supported, make sure the initial level
        // is set correctly
        if (g_ConnectorInfo[pThis->m_DevID].ProtectionTypeMask & j) {
            DWORD oldLevel = pThis->m_LocalLevel[i];
            g_COPPLevels[pThis->m_DevID].Levels[i][oldLevel]--;
        }
    }
    ResetKey(&pThis->m_AesHelper);
    return NO_ERROR;
}

Requirements

Target platform	Version
Desktop	This function applies only to Windows Server 2003 with SP1 and later, and Windows XP with SP2 and later.

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