/// <summary>
/// Create the DYNVC_DATA PDU
/// </summary>
/// <param name="channelId">The channelId</param>
/// <param name="data">The uncompressed data</param>
/// <param name="channelChunkLength">The maximum number of uncompressed bytes in a single segment </param>
/// <returns>Return the first and second PDUs in an array</returns>
public DataDvcBasePdu[] CreateDataPdu(uint channelId, byte[] data, int channelChunkLength)
{
DataFirstDvcPdu first = new DataFirstDvcPdu(channelId, (uint)data.Length, null);
DataDvcPdu other = new DataDvcPdu(channelId, null);
int firstNonDataSize = first.GetNonDataSize();
int otherNonDataSize = other.GetNonDataSize();
if (data.Length <= channelChunkLength - otherNonDataSize)
{
other.Data = data;
return(new DataDvcBasePdu[] { other });
}
// TODO: need to test for the following code
byte[] buf = new byte[channelChunkLength - firstNonDataSize];
MemoryStream ms = new MemoryStream(data);
List <DataDvcBasePdu> pdus = new List <DataDvcBasePdu>();
if (channelChunkLength - firstNonDataSize != ms.Read(buf, 0, channelChunkLength - firstNonDataSize))
{
DynamicVCException.Throw("Cannot create correct data PDUs.");
}
first.Data = buf;
pdus.Add(first);
buf = new byte[channelChunkLength - otherNonDataSize];
// TODO: Check this logic
int readLen = 0;
readLen = ms.Read(buf, 0, channelChunkLength - otherNonDataSize);
while (readLen == channelChunkLength - otherNonDataSize)
{
pdus.Add(new DataDvcPdu(channelId, buf));
buf = new byte[channelChunkLength - otherNonDataSize];
readLen = ms.Read(buf, 0, channelChunkLength - otherNonDataSize);
}
if (readLen > 0)
{
byte[] newBuf = new byte[readLen];
Array.Copy(buf, newBuf, readLen);
pdus.Add(new DataDvcPdu(channelId, newBuf));
}
return(pdus.ToArray());
}
/// <summary>
/// Create the DYNVC_DATA PDU
/// </summary>
/// <param name="channelId">The channelId</param>
/// <param name="data">The uncompressed data</param>
/// <param name="channelChunkLength">The maximum number of uncompressed bytes in a single segment </param>
/// <returns>Return the first and second PDUs in an array</returns>
public DataDvcBasePdu[] CreateDataPdu(uint channelId, byte[] data, int channelChunkLength)
{
DataFirstDvcPdu first = new DataFirstDvcPdu(channelId, (uint)data.Length, null);
DataDvcPdu other = new DataDvcPdu(channelId, null);
int firstNonDataSize = first.GetNonDataSize();
int otherNonDataSize = other.GetNonDataSize();
if (data.Length <= channelChunkLength - otherNonDataSize)
{
other.Data = data;
return new DataDvcBasePdu[] { other };
}
// TODO: need to test for the following code
byte[] buf = new byte[channelChunkLength - firstNonDataSize];
MemoryStream ms = new MemoryStream(data);
List<DataDvcBasePdu> pdus = new List<DataDvcBasePdu>();
if (channelChunkLength - firstNonDataSize != ms.Read(buf, 0, channelChunkLength - firstNonDataSize))
{
DynamicVCException.Throw("Cannot create correct data PDUs.");
}
first.Data = buf;
pdus.Add(first);
buf = new byte[channelChunkLength - otherNonDataSize];
// TODO: Check this logic
int readLen = 0;
readLen = ms.Read(buf, 0, channelChunkLength - otherNonDataSize);
while (readLen == channelChunkLength - otherNonDataSize)
{
pdus.Add(new DataDvcPdu(channelId, buf));
buf = new byte[channelChunkLength - otherNonDataSize];
readLen = ms.Read(buf, 0, channelChunkLength - otherNonDataSize);
}
if (readLen > 0)
{
byte[] newBuf = new byte[readLen];
Array.Copy(buf, newBuf, readLen);
pdus.Add(new DataDvcPdu(channelId, newBuf));
}
return pdus.ToArray();
}
