public static HResult GetEnableData(this IMFContentEnabler contentEnabler, out byte[] data)
{
if (contentEnabler == null)
{
throw new ArgumentNullException("contentEnabler");
}
IntPtr dataPtr;
int dataLength;
HResult hr = contentEnabler.GetEnableData(out dataPtr, out dataLength);
if (hr.Succeeded())
{
try
{
data = new byte[dataLength];
Marshal.Copy(dataPtr, data, 0, dataLength);
}
finally
{
Marshal.FreeCoTaskMem(dataPtr);
}
}
else
{
data = null;
}
return(hr);
}
///////////////////////////////////////////////////////////////////////
// Name: EndEnableContent
// Description: Completes the enable action.
/////////////////////////////////////////////////////////////////////////
public HResult EndEnableContent(IMFAsyncResult pResult)
{
// Make sure we *never* leave this entry point with an exception
try
{
Debug.WriteLine("ContentProtectionManager::EndEnableContent");
if (pResult == null)
{
throw new COMException("NULL IMFAsyncResult", (int)HResult.E_POINTER);
}
// Release interfaces, so that we're ready to accept another call
// to BeginEnableContent.
SafeRelease(m_pEnabler);
SafeRelease(m_pMEG);
SafeRelease(m_punkState);
SafeRelease(m_pCallback);
m_pEnabler = null;
m_pMEG = null;
m_pCallback = null;
m_punkState = null;
return(m_hrStatus);
}
catch (Exception e)
{
return((HResult)Marshal.GetHRForException(e));
}
}
public void Dispose()
{
Debug.WriteLine("ContentProtectionManager::Dispose");
SafeRelease(m_pEnabler);
SafeRelease(m_pMEG);
SafeRelease(m_pCallback);
SafeRelease(m_punkState);
m_pEnabler = null;
m_pMEG = null;
m_pCallback = null;
m_punkState = null;
}
///////////////////////////////////////////////////////////////////////
// Name: BeginEnableContent
// Description: Called by the PMP session to start the enable action.
/////////////////////////////////////////////////////////////////////////
public HResult BeginEnableContent(
IMFActivate pEnablerActivate,
IMFTopology pTopo,
IMFAsyncCallback pCallback,
object punkState
)
{
// Make sure we *never* leave this entry point with an exception
try
{
Debug.WriteLine("ContentProtectionManager::BeginEnableContent");
if (m_pEnabler != null)
{
throw new COMException("A previous call is still pending", (int)HResult.E_FAIL);
}
HResult hr;
// Save so we can create an async result later
m_pCallback = pCallback;
m_punkState = punkState;
// Create the enabler from the IMFActivate pointer.
object o;
hr = pEnablerActivate.ActivateObject(typeof(IMFContentEnabler).GUID, out o);
MFError.ThrowExceptionForHR(hr);
m_pEnabler = o as IMFContentEnabler;
// Notify the application. The application will call DoEnable from the app thread.
m_state = Enabler.Ready; // Reset the state.
PostMessage(m_hwnd, WM_APP_CONTENT_ENABLER, IntPtr.Zero, IntPtr.Zero);
return(HResult.S_OK);
}
catch (Exception e)
{
return((HResult)Marshal.GetHRForException(e));
}
}
///////////////////////////////////////////////////////////////////////
// Name: BeginEnableContent
// Description: Called by the PMP session to start the enable action.
/////////////////////////////////////////////////////////////////////////
public int BeginEnableContent(
IMFActivate pEnablerActivate,
IMFTopology pTopo,
IMFAsyncCallback pCallback,
object punkState
)
{
// Make sure we *never* leave this entry point with an exception
try
{
Debug.WriteLine("ContentProtectionManager::BeginEnableContent");
if (m_pEnabler != null)
{
throw new COMException("A previous call is still pending", E_Fail);
}
int hr;
// Save so we can create an async result later
m_pCallback = pCallback;
m_punkState = punkState;
// Create the enabler from the IMFActivate pointer.
object o;
hr = pEnablerActivate.ActivateObject(typeof(IMFContentEnabler).GUID, out o);
MFError.ThrowExceptionForHR(hr);
m_pEnabler = o as IMFContentEnabler;
// Notify the application. The application will call DoEnable from the app thread.
m_state = Enabler.Ready; // Reset the state.
PostMessage(m_hwnd, WM_APP_CONTENT_ENABLER, IntPtr.Zero, IntPtr.Zero);
return S_Ok;
}
catch (Exception e)
{
return Marshal.GetHRForException(e);
}
}
///////////////////////////////////////////////////////////////////////
// Name: EndEnableContent
// Description: Completes the enable action.
/////////////////////////////////////////////////////////////////////////
public int EndEnableContent(IMFAsyncResult pResult)
{
// Make sure we *never* leave this entry point with an exception
try
{
Debug.WriteLine("ContentProtectionManager::EndEnableContent");
if (pResult == null)
{
throw new COMException("NULL IMFAsyncResult", E_Pointer);
}
// Release interfaces, so that we're ready to accept another call
// to BeginEnableContent.
SafeRelease(m_pEnabler);
SafeRelease(m_pMEG);
SafeRelease(m_punkState);
SafeRelease(m_pCallback);
m_pEnabler = null;
m_pMEG = null;
m_pCallback = null;
m_punkState = null;
return m_hrStatus;
}
catch (Exception e)
{
return Marshal.GetHRForException(e);
}
}
public void Dispose()
{
Debug.WriteLine("ContentProtectionManager::Dispose");
SafeRelease(m_pEnabler);
SafeRelease(m_pMEG);
SafeRelease(m_pCallback);
SafeRelease(m_punkState);
m_pEnabler = null;
m_pMEG = null;
m_pCallback = null;
m_punkState = null;
}
