public IDrmSession CreateDRMSession(DRMInitData data)
{
Logger.Info("Create DrmSession");
lock (drmHandlers)
{
var handler = drmHandlers.FirstOrDefault(o => o.SupportsSystemId(data.SystemId));
if (handler == null)
{
Logger.Warn("unknown drm init data");
return(null);
}
var scheme = handler.GetScheme(data.SystemId);
lock (clipDrmConfiguration)
{
var drmConfiguration = clipDrmConfiguration.FirstOrDefault(o => SchemeEquals(o.Scheme, scheme));
if (drmConfiguration == null)
{
Logger.Warn("drm not configured");
return(null);
}
var session = handler.CreateDRMSession(data, drmConfiguration);
return(session);
}
}
}
public void OnDRMFound(DRMInitData data)
{
Logger.Info($"{streamType}");
if (!forceDrmChange && drmSession != null)
{
return;
}
IDrmSession newSession = drmManager.CreateDRMSession(data);
// Do not reset wait for DRM event. If there is no valid session
// do not want to append new data
//
if (newSession == null)
{
return;
}
Logger.Info($"{streamType}: New DRM session found");
forceDrmChange = false;
// Decrement use counter for packet stream on old DRM Session
drmSession?.Release();
// Add reference count for new session
newSession.Share();
// Set new session as current & let data submitters run wild.
// There is no need to store sessions. They live in player queue
drmSession = newSession;
}
public void Start_DRMInitDataFound_PublishesDRMInitData(StartType startType)
{
AsyncContext.Run(async() =>
{
var initData = new DRMInitData
{
StreamType = StreamType.Video,
InitData = new byte[1]
};
var demuxerStub = CreateDemuxerStub(new ClipConfiguration
{
DrmInitDatas = new List <DRMInitData> {
initData
}
}, startType);
using (var controller = new DemuxerController(demuxerStub))
{
var initDataTask = controller.DrmInitDataFound().FirstAsync().ToTask();
StartController(controller, startType);
var receivedInitData = await initDataTask;
Assert.That(receivedInitData, Is.EqualTo(initData));
}
});
}
public void OnAppendPacket_WhenDrmSessionIsConfigured_CallsPlayerAdapter()
{
var codecExtraDataHandlerStub = Substitute.For <ICodecExtraDataHandler>();
var drmSessionStub = CreateDrmSessionFake();
var drmManagerStub = CreateDrmManagerFake(drmSessionStub);
var playerMock = Substitute.For <IPlayer>();
using (var stream = CreatePacketStream(StreamType.Audio, playerMock, drmManagerStub, codecExtraDataHandlerStub))
{
var packet = new EncryptedPacket()
{
StreamType = StreamType.Audio
};
var config = new AudioStreamConfig();
var drmInitData = new DRMInitData();
stream.OnStreamConfigChanged(config);
stream.OnDRMFound(drmInitData);
stream.OnAppendPacket(packet);
playerMock.Received().AppendPacket(Arg.Any <Packet>());
}
}
private void ParseCencScheme(ContentProtection descriptor, string schemeIdUri)
{
var doc = new XmlDocument();
try
{
doc.LoadXml(descriptor.Data);
}
catch (Exception)
{
return;
}
// read first node inner text (should be psshbox or pro header)
var initData = doc.FirstChild?.FirstChild?.InnerText;
if (initData == null)
{
return;
}
var drmInitData = new DRMInitData
{
KeyIDs = CencUtils.GetKeyIDs(descriptor.CencDefaultKID),
DataType = CencUtils.GetInitDataType(doc.FirstChild?.FirstChild?.Name),
InitData = Convert.FromBase64String(initData),
SystemId = CencUtils.SchemeIdUriToSystemId(schemeIdUri),
// Stream Type will be appended during OnDRMInitDataFound()
};
drmInitDataSubject.OnNext(drmInitData);
}
public static List <byte[]> GetKeyIds(DRMInitData initData)
{
var mpdSource = initData.KeyIDs?.Select(UuidToKey) ?? Enumerable.Empty <byte[]>();
IEnumerable <byte[]> initDataSource;
try
{
switch (initData.DataType)
{
case DRMInitDataType.MsPrPro:
Logger.Info(initData.DataType.ToString());
initDataSource = MicrosoftPlayReadyObjectHeader(initData.InitData);
break;
case DRMInitDataType.Pssh:
Logger.Info(initData.DataType.ToString());
initDataSource = PsshBox(initData.InitData);
break;
default:
initDataSource = Enumerable.Empty <byte[]>();
break;
}
}
catch (IndexOutOfRangeException)
{
// Init data seems malformed. May still usable by underlying decryption mechanisms.
// Try processing what's available
Logger.Warn("Possibly malformed DRMInitData.initData");
initDataSource = Enumerable.Empty <byte[]>();
}
return(mpdSource.Concat(initDataSource).ToList());
}
public void OnDRMInitDataFound(DRMInitData data)
{
if (!streams.ContainsKey(data.StreamType))
{
return;
}
streams[data.StreamType].OnDRMFound(data);
}
private static DRMInitData CreateWidevineDrmInitData()
{
var drmInitData = new DRMInitData()
{
InitData = initWidevineData,
SystemId = WidevineSystemId,
StreamType = StreamType.Video,
};
return(drmInitData);
}
private static DRMInitData CreatePlayReadyDrmInitData()
{
var drmInitData = new DRMInitData()
{
InitData = initPlayReadyData,
SystemId = PlayreadySystemId,
StreamType = StreamType.Video,
};
return(drmInitData);
}
public IDrmSession CreateDRMSession(DRMInitData initData, DRMDescription drmDescription)
{
var iemeKeySystemName = CencUtils.GetKeySystemName(initData.SystemId);
if (IEME.isKeySystemSupported(iemeKeySystemName) != Status.kSupported)
{
Logger.Warn($"Key System: {iemeKeySystemName} is not supported");
return(null);
}
return(CencSession.Create(initData, drmDescription));
}
public async Task Init_DrmInitDataAvailable_ReturnsDrmInitData(InitType initType)
{
var expectedData = new DRMInitData
{
StreamType = StreamType.Video,
InitData = new byte[] { 1 },
SystemId = new byte[] { 2 }
};
var formatContextStub = Substitute.For <IAVFormatContext>();
formatContextStub.DRMInitData.Returns(new[] { expectedData });
var glueStub = Substitute.For <IFFmpegGlue>();
glueStub.AllocFormatContext().Returns(formatContextStub);
using (var demuxer = CreateFFmpegDemuxer(glueStub))
{
var clipConfig = await InitDemuxer(demuxer, initType);
var receivedData = clipConfig.DrmInitDatas[0];
Assert.That(receivedData, Is.EqualTo(expectedData));
}
}
public IDrmSession CreateDRMSession(DRMInitData data)
{
Logger.Info("Create DrmSession");
// Before diving into locks, decode DRM InitData KeyIDs
var keyIds = DrmInitDataTools.GetKeyIds(data);
var useGenericKey = keyIds.Count == 0;
if (useGenericKey)
{
Logger.Info("No keys found. Using entire DRMInitData.InitData as generic key");
keyIds.Add(data.InitData);
}
else
{
// Early exit scenario - already cached
if (_sessionCache.TryGetSession(keyIds, out IDrmSession session))
{
Logger.Info("Cached session found");
return(session);
}
}
lock (drmHandlers)
{
var handler = drmHandlers.FirstOrDefault(o => o.SupportsSystemId(data.SystemId));
if (handler == null)
{
Logger.Warn("unknown drm init data");
return(null);
}
var scheme = handler.GetScheme(data.SystemId);
lock (clipDrmConfiguration)
{
var drmConfiguration = clipDrmConfiguration.FirstOrDefault(o => SchemeEquals(o.Scheme, scheme));
if (drmConfiguration == null)
{
Logger.Warn("drm not configured");
return(null);
}
// Recheck needs to be done for cached session.
// Early check may produce false negatives - session being created by other stream
// but not yet cached.
if (_sessionCache.TryGetSession(keyIds, out IDrmSession session))
{
Logger.Info("Cached session found");
return(session);
}
Logger.Info("No cached session found");
session = handler.CreateDRMSession(data, drmConfiguration);
session.Share();
if (_sessionCache.TryAddSession(keyIds, session))
{
return(session);
}
Logger.Info("Failed to cache session");
session.Release();
return(session);
}
}
}
