/// <summary>
/// Retrieve the PlayReady license expiration date based onthe video KeyID
/// This method uses the Windows Runtime library MediaHelpers to get the expiration date
/// The use of this library is a turn around to a PlayReady issue with .Net Native.
/// </summary>
private DateTime GetLicenseExpirationDate(Guid videoId)
{
var keyIdString = Convert.ToBase64String(videoId.ToByteArray());
try
{
var contentHeader = new Windows.Media.Protection.PlayReady.PlayReadyContentHeader(
videoId,
keyIdString,
Windows.Media.Protection.PlayReady.PlayReadyEncryptionAlgorithm.Aes128Ctr,
null,
null,
string.Empty,
new Guid());
Windows.Media.Protection.PlayReady.IPlayReadyLicense[] licenses = new Windows.Media.Protection.PlayReady.PlayReadyLicenseIterable(contentHeader, true).ToArray();
foreach (var lic in licenses)
{
DateTimeOffset? d = MediaHelpers.PlayReadyHelper.GetLicenseExpirationDate(lic);
if ((d != null) && (d.HasValue))
return d.Value.DateTime;
}
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("GetLicenseExpirationDate Exception: " + e.Message);
return DateTime.MinValue;
}
return DateTime.MinValue;
}
/// <summary>
/// GetPlayReadyExpirationDate
/// Return PlayReady Expiration date (return DateTimeOffset.MinValue if not available)
/// </summary>
/// <param name=""></param>
/// <returns>true if protected</returns>
public DateTimeOffset GetPlayReadyExpirationDate()
{
DateTimeOffset d = DateTimeOffset.MinValue;
if (!string.IsNullOrEmpty(this.ProtectionData) &&
(this.ProtectionGuid != Guid.Empty))
{
Uri DefaultLicenseAcquistionUri;
Guid DefaultContentKeyId;
string DefaultContentKeyIdString;
Guid DefaultDomainServiceId;
if (GetPlayReadyParameters(this.ProtectionData, out DefaultLicenseAcquistionUri, out DefaultContentKeyId, out DefaultContentKeyIdString, out DefaultDomainServiceId))
{
var keyIdString = Convert.ToBase64String(DefaultContentKeyId.ToByteArray());
try
{
var contentHeader = new Windows.Media.Protection.PlayReady.PlayReadyContentHeader(
DefaultContentKeyId,
keyIdString,
Windows.Media.Protection.PlayReady.PlayReadyEncryptionAlgorithm.Aes128Ctr,
null,
null,
string.Empty,
new Guid());
Windows.Media.Protection.PlayReady.IPlayReadyLicense[] licenses = new Windows.Media.Protection.PlayReady.PlayReadyLicenseIterable(contentHeader, true).ToArray();
foreach (var lic in licenses)
{
DateTimeOffset? dto = MediaHelpers.PlayReadyHelper.GetLicenseExpirationDate(lic);
if ((dto != null) && (dto.HasValue))
return dto.Value.DateTime;
}
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("GetPlayReadyExpirationDate Exception: " + e.Message);
return DateTimeOffset.MinValue;
}
}
return d;
}
return d;
}
