/// <summary>
/// Parse the message.
/// </summary>
/// <param name="byteData">The MPEG2 section containing the message.</param>
/// <param name="index">Index of the first byte of the message following the header in the MPEG2 section.</param>
public override void Process(byte[] byteData, int index)
{
lastIndex = index;
try
{
downloadID = Utils.Convert4BytesToInt(byteData, lastIndex);
lastIndex += 4;
blockSize = Utils.Convert2BytesToInt(byteData, lastIndex);
lastIndex += 2;
windowSize = (int)byteData[lastIndex];
lastIndex++;
ackPeriod = (int)byteData[lastIndex];
lastIndex++;
tcDownloadWindow = Utils.Convert4BytesToInt(byteData, lastIndex);
lastIndex += 4;
tcDownloadScenario = Utils.Convert4BytesToInt(byteData, lastIndex);
lastIndex += 4;
compatibilityDescriptorLength = Utils.Convert2BytesToInt(byteData, lastIndex);
lastIndex += 2;
if (compatibilityDescriptorLength != 0)
{
compatibilityDescriptor = new DSMCCCompatibilityDescriptor();
compatibilityDescriptor.Process(byteData, lastIndex);
lastIndex = compatibilityDescriptor.Index;
}
numberOfModules = Utils.Convert2BytesToInt(byteData, lastIndex);
lastIndex += 2;
if (numberOfModules != 0)
{
moduleList = new Collection <DSMCCDownloadInfoIndicationModule>();
while (moduleList.Count < numberOfModules)
{
DSMCCDownloadInfoIndicationModule module = new DSMCCDownloadInfoIndicationModule();
module.Process(byteData, lastIndex);
moduleList.Add(module);
lastIndex = module.Index;
}
}
privateDataLength = Utils.Convert2BytesToInt(byteData, lastIndex);
lastIndex += 2;
if (privateDataLength != 0)
{
privateData = Utils.GetBytes(byteData, lastIndex, privateDataLength);
lastIndex += privateDataLength;
}
Validate();
}
catch (IndexOutOfRangeException)
{
throw (new ArgumentOutOfRangeException("The DSMCC DownloadInfo Indication message is short"));
}
}
private void checkRemoveModule(DSMCCDownloadInfoIndicationModule module)
{
foreach (DSMCCModule existingModule in modules)
{
if (existingModule.ModuleID == module.ModuleID)
{
modules.Remove(existingModule);
return;
}
}
}
/// <summary>
/// Parse the message.
/// </summary>
/// <param name="byteData">The MPEG2 section containing the message.</param>
/// <param name="index">Index of the first byte of the message following the header in the MPEG2 section.</param>
public override void Process(byte[] byteData, int index)
{
lastIndex = index;
try
{
downloadID = Utils.Convert4BytesToInt(byteData, lastIndex);
lastIndex += 4;
blockSize = Utils.Convert2BytesToInt(byteData, lastIndex);
lastIndex += 2;
windowSize = (int)byteData[lastIndex];
lastIndex++;
ackPeriod = (int)byteData[lastIndex];
lastIndex++;
tcDownloadWindow = Utils.Convert4BytesToInt(byteData, lastIndex);
lastIndex += 4;
tcDownloadScenario = Utils.Convert4BytesToInt(byteData, lastIndex);
lastIndex += 4;
compatibilityDescriptorLength = Utils.Convert2BytesToInt(byteData, lastIndex);
lastIndex += 2;
if (compatibilityDescriptorLength != 0)
{
compatibilityDescriptor = new DSMCCCompatibilityDescriptor();
compatibilityDescriptor.Process(byteData, lastIndex);
lastIndex = compatibilityDescriptor.Index;
}
numberOfModules = Utils.Convert2BytesToInt(byteData, lastIndex);
lastIndex += 2;
if (numberOfModules != 0)
{
moduleList = new Collection<DSMCCDownloadInfoIndicationModule>();
while (moduleList.Count < numberOfModules)
{
DSMCCDownloadInfoIndicationModule module = new DSMCCDownloadInfoIndicationModule();
module.Process(byteData, lastIndex);
moduleList.Add(module);
lastIndex = module.Index;
}
}
privateDataLength = Utils.Convert2BytesToInt(byteData, lastIndex);
lastIndex += 2;
if (privateDataLength != 0)
{
privateData = Utils.GetBytes(byteData, lastIndex, privateDataLength);
lastIndex += privateDataLength;
}
Validate();
}
catch (IndexOutOfRangeException)
{
throw (new ArgumentOutOfRangeException("The DSMCC DownloadInfo Indication message is short"));
}
}
private void checkAddModule(DSMCCDownloadInfoIndicationModule module)
{
foreach (DSMCCModule oldModule in modules)
{
if (oldModule.ModuleID == module.ModuleID)
{
if (oldModule.Version == module.ModuleVersion)
return;
else
{
if (oldModule.Version != module.ModuleVersion)
{
int replaceIndex = modules.IndexOf(oldModule);
modules.Remove(oldModule);
DSMCCModule replaceModule = new DSMCCModule(module.ModuleID, module.ModuleVersion, module.ModuleSize, module.OriginalSize);
if (replaceIndex != modules.Count)
modules.Insert(replaceIndex, replaceModule);
else
modules.Add(replaceModule);
return;
}
}
}
else
{
if (oldModule.ModuleID > module.ModuleID)
{
DSMCCModule insertModule = new DSMCCModule(module.ModuleID, module.ModuleVersion, module.ModuleSize, module.OriginalSize);
modules.Insert(modules.IndexOf(oldModule), insertModule);
return;
}
}
}
DSMCCModule newModule = new DSMCCModule(module.ModuleID, module.ModuleVersion, module.ModuleSize, module.OriginalSize);
modules.Add(newModule);
}
