/// <summary>
/// This Function will return the location of the very first frame in the memory buffer..
/// </summary>
/// <param name="internalMemoryBuffer">memory buffer reference</param>
/// <param name="startIndexSearch">starting index inside the memory buffer where it will search</param>
/// <returns>PositionFrame class which will give the position of the frame inside the memory buffer</returns>
public PositionFrame GetPosition(List <byte> internalMemoryBuffer, int startIndexSearch)
{
if (startIndexSearch > internalMemoryBuffer.Count - startPattern.Length)
{
// return null;
return(new PositionFrame(true, internalMemoryBuffer.Count - startPattern.Length));
}
// find starting pattern
// before finding the just invert the logic in here from start to end..
int frameStartIndex = FindPattern(internalMemoryBuffer, startPattern, startIndexSearch);
if (frameStartIndex == -1)
{
return(new PositionFrame(true, internalMemoryBuffer.Count - startPattern.Length));
}
int frameEndIndex = FindPattern(internalMemoryBuffer, endPattern, frameStartIndex + startPattern.Length);
if (frameEndIndex == -1)
{
return(new PositionFrame(true, frameStartIndex));
}
int Lenght = frameEndIndex - frameStartIndex + endPattern.Length;
int nextSearchStartPosition = frameEndIndex + endPattern.Length;
PositionFrame aPositionFrame = new PositionFrame(frameStartIndex, frameEndIndex, nextSearchStartPosition, Lenght);
return(aPositionFrame);
}
/// <summary>
/// This Function will return the location of the very first frame in the memory buffer..
/// </summary>
/// <param name="internalMemoryBuffer">memory buffer reference</param>
/// <param name="startIndexSearch">starting index inside the memory buffer where it will search</param>
/// <returns>PositionFrame class which will give the position of the frame inside the memory buffer</returns>
public PositionFrame GetPosition(List <byte> internalMemoryBuffer, int startIndexSearch)
{
if (startIndexSearch > internalMemoryBuffer.Count - startPattern.Length)
{
return(new PositionFrame(true, internalMemoryBuffer.Count - startPattern.Length));
}
// find starting pattern
int frameStartIndex = FindPattern(internalMemoryBuffer, startPattern, startIndexSearch);
if (frameStartIndex == -1)
{
return(new PositionFrame(true, internalMemoryBuffer.Count - startPattern.Length));
}
int frameEndIndex = FindPattern(internalMemoryBuffer, endPattern, frameStartIndex + startPattern.Length);
if (frameEndIndex == -1)
{
return(new PositionFrame(true, frameStartIndex));
}
int Lenght = frameEndIndex - frameStartIndex + endPattern.Length;
int nextSearchStartPosition = frameEndIndex + endPattern.Length;
PositionFrame aPositionFrame = new PositionFrame(frameStartIndex, frameEndIndex, nextSearchStartPosition, Lenght);
return(aPositionFrame);
}
private void SearchFormatHandoff()
{
while (startIndexSearch < internalMemoryBuffer.Count)
{
byte[] locData = null;
if (isFrameSearchingRequired)
{
PositionFrame position = frameSearcher.GetPosition(internalMemoryBuffer, startIndexSearch);
if (position == null)
{
//Debugger.Break();
}
// frame not Found...
if (position.IsNullPosition())
{
startIndexSearch = position.GetNextSearchStartingPosition();
return;
}
// else if frame found.
startIndexSearch = position.GetNextSearchStartingPosition();
locData = new byte[position.GetFrameLength()];
int counter = 0;
for (int i = position.GetFrameStartPosition(); i < position.GetFrameStartPosition() + position.GetFrameLength(); i++)
{
// now first XOR ith Element of Internal Memory Buffer with 55 here
if (isDataFormattingRequired)
{
locData[counter++] = frameFormatter.FormatByte(internalMemoryBuffer[i]);
}
else
{
locData[counter++] = internalMemoryBuffer[i];
}
}
}
else
{
// No frame search required now just copy the data to output buffer...
locData = new byte[internalMemoryBuffer.Count - startIndexSearch];
int dataCounter = 0;
for (int i = startIndexSearch; i < internalMemoryBuffer.Count; i++)
{
if (isDataFormattingRequired)
{
locData[dataCounter++] = frameFormatter.FormatByte(internalMemoryBuffer[i]);
}
else
{
locData[dataCounter++] = internalMemoryBuffer[i];
}
}
startIndexSearch = internalMemoryBuffer.Count;
}
// now Hand off data..
transferBuffer.TryAdd(locData);
//publisher.UpdateUserInterface(locData);
}
}
