///////////////////////////////////////////////////////////////////////
// Name: DoEnable
// Description: Does the enabler action.
//
// flags: If ForceNonSilent, then always use non-silent enable.
// Otherwise, use silent enable if possible.
////////////////////////////////////////////////////////////////////////
public void DoEnable(EnablerFlags flags)
{
Debug.WriteLine(string.Format("ContentProtectionManager::DoEnable (flags ={0})", flags.ToString()));
HResult hr;
bool bAutomatic = false;
Guid guidEnableType;
try
{
// Get the enable type. (Just for logging. We don't use it.)
hr = m_pEnabler.GetEnableType(out guidEnableType);
MFError.ThrowExceptionForHR(hr);
LogEnableType(guidEnableType);
// Query for the IMFMediaEventGenerator interface so that we can get the
// enabler events.
m_pMEG = (IMFMediaEventGenerator)m_pEnabler;
// Ask for the first event.
hr = m_pMEG.BeginGetEvent(this, null);
MFError.ThrowExceptionForHR(hr);
// Decide whether to use silent or non-silent enabling. If flags is ForceNonSilent,
// then we use non-silent. Otherwise, we query whether the enabler object supports
// silent enabling (also called "automatic" enabling).
if (flags == EnablerFlags.ForceNonSilent)
{
Debug.WriteLine(("Forcing non-silent enable."));
bAutomatic = false;
}
else
{
hr = m_pEnabler.IsAutomaticSupported(out bAutomatic);
MFError.ThrowExceptionForHR(hr);
Debug.WriteLine(string.Format("IsAutomatic: auto = {0}", bAutomatic));
}
// Start automatic or non-silent, depending.
if (bAutomatic)
{
m_state = Enabler.SilentInProgress;
Debug.WriteLine("Content enabler: Automatic is supported");
hr = m_pEnabler.AutomaticEnable();
MFError.ThrowExceptionForHR(hr);
}
else
{
m_state = Enabler.NonSilentInProgress;
Debug.WriteLine("Content enabler: Using non-silent enabling");
DoNonSilentEnable();
}
}
catch (Exception e)
{
m_hrStatus = (HResult)Marshal.GetHRForException(e);
throw;
}
}
///////////////////////////////////////////////////////////////////////
// Name: DoEnable
// Description: Does the enabler action.
//
// flags: If ForceNonSilent, then always use non-silent enable.
// Otherwise, use silent enable if possible.
////////////////////////////////////////////////////////////////////////
public void DoEnable(EnablerFlags flags)
{
Debug.WriteLine(string.Format("ContentProtectionManager::DoEnable (flags ={0})", flags.ToString()));
int hr;
bool bAutomatic = false;
Guid guidEnableType;
try
{
// Get the enable type. (Just for logging. We don't use it.)
hr = m_pEnabler.GetEnableType(out guidEnableType);
MFError.ThrowExceptionForHR(hr);
LogEnableType(guidEnableType);
// Query for the IMFMediaEventGenerator interface so that we can get the
// enabler events.
m_pMEG = (IMFMediaEventGenerator)m_pEnabler;
// Ask for the first event.
hr = m_pMEG.BeginGetEvent(this, null);
MFError.ThrowExceptionForHR(hr);
// Decide whether to use silent or non-silent enabling. If flags is ForceNonSilent,
// then we use non-silent. Otherwise, we query whether the enabler object supports
// silent enabling (also called "automatic" enabling).
if (flags == EnablerFlags.ForceNonSilent)
{
Debug.WriteLine(("Forcing non-silent enable."));
bAutomatic = false;
}
else
{
hr = m_pEnabler.IsAutomaticSupported(out bAutomatic);
MFError.ThrowExceptionForHR(hr);
Debug.WriteLine(string.Format("IsAutomatic: auto = {0}", bAutomatic));
}
// Start automatic or non-silent, depending.
if (bAutomatic)
{
m_state = Enabler.SilentInProgress;
Debug.WriteLine("Content enabler: Automatic is supported");
hr = m_pEnabler.AutomaticEnable();
MFError.ThrowExceptionForHR(hr);
}
else
{
m_state = Enabler.NonSilentInProgress;
Debug.WriteLine("Content enabler: Using non-silent enabling");
DoNonSilentEnable();
}
}
catch (Exception e)
{
m_hrStatus = Marshal.GetHRForException(e);
throw;
}
}
