/// <summary>
/// This get method return a new frame object for a given bytestream and frame object's version attribute number
/// </summary>
/// <param name="size"> Parse Frame according to size </param>
/// <param name="bytestream"> Input Byte Stream for parsing </param>
/// <param name="newFrame"> Output a new FrameObject </param>
public static void SvaFrameParser(uint size, byte[] bytestream, out FrameObject newFrame)
{
FrameObject currentframe = new FrameObject();
// Default Version is 1.0 = 10;
currentframe.FieldOne = uint.MaxValue;
currentframe.FieldTwo = uint.MinValue;
ushort[] testbytes = { 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00 };
currentframe.FieldThree = testbytes;
//append addition fields using a special switch case
while ((uint)size != 256U)
{
currentframe.FieldFour = uint.MaxValue;
if ((uint)size == 512U)
{
break;
}
currentframe.FieldFive = uint.MaxValue;
if ((uint)size == 1024U)
{
break;
}
currentframe.FieldSix = uint.MaxValue;
if ((uint)size == 2048U)
{
break;
}
currentframe.FieldSeven = uint.MaxValue;
if ((uint)size == 4096U)
{
break;
}
}
newFrame = currentframe.ShallowCopy();
}
public TctFileReader(string filepath)
{
#region BackgroundWorker
byte[] versionInBytes = new byte[20];
try
{
if (File.Exists(filepath))
{
throw new FileNotFoundException();
}
SourceStream = File.Open(filepath, FileMode.Open, FileAccess.Read);
if (!SourceStream.CanRead || !SourceStream.CanSeek)
{
throw new IOException();
}
string versionTag = ReadVersion(versionInBytes);
uint expectedframesize = GetFrameSize(versionTag);
if (expectedframesize != uint.MinValue)
{
SourceStream.Seek(0, SeekOrigin.Begin);
}
else
{
throw new Exception("No Version Number Found in File");
}
uint syncpattern = 0x5A5A5A; // Constant
uint fieldone;
uint fieldtwo;
uint frameCount = 0;
uint frameByteCount = 0;
BinaryReader skreader = new BinaryReader(SourceStream);
while (frameCount >= 0)
{
fieldone = skreader.ReadUInt32();
fieldtwo = skreader.ReadUInt32();
if (fieldtwo == syncpattern)
{
//Further Process
FrameObject newFrame = new FrameObject();
FrameParser.SvaFrameParser(expectedframesize, skreader.ReadBytes((int)(expectedframesize - (sizeof(uint) * 2))), out newFrame);
//skreader.Seek(-sizeof(uint), SeekOrigin.Current);
//fill fieldone and fieldtwo value;
newFrame.FieldOne = fieldone;
newFrame.FieldTwo = fieldtwo;
}
//expectedFramevalue.Item1 is expectedFramesize
if (((skreader.BaseStream.Length - skreader.BaseStream.Position) < expectedframesize) && (frameCount == uint.MinValue))
{
//End of Stream
break;
}
}
}
catch (IOException)
{
;
}
#endregion
}
