public FileSource(IRefillBuffer <byte[]> buffer, int consumerId)
{
this.buffer = buffer;
this.consumerId = consumerId;
length = ((ByteStreamToBlock)buffer.BlockSource).Source.Length;
dataInfo = new DataInfo()
{
GetBlock = () => {
while (!buffer.CanRead(consumerId))
{
Thread.Sleep(20);
}
return(buffer.GetBlock(consumerId));
},
Advance = () => {
while (!buffer.CanRead(consumerId))
{
Thread.Sleep(20);
}
localStartPosition += buffer.GetBlock(consumerId).Length;
dataInfo.Offset = 0;
buffer.Advance(consumerId);
},
GetLength = () => { return(length); },
GetPosition = () => { return(localStartPosition + dataInfo.Offset); }
};
}
private void DummyRead()
{
bool endOfStream;
while (!(endOfStream = b.EndOfStream(consumerId)) && !b.CanRead(consumerId))
{
Thread.Sleep(20);
}
while (!endOfStream)
{
b.Advance(consumerId);
while (!(endOfStream = b.EndOfStream(consumerId)) && !b.CanRead(consumerId))
{
Thread.Sleep(20);
}
}
/*while(!b.EndOfStream(consumerId)) {
* while(!b.CanRead(consumerId)) Thread.Sleep(20);
* b.Advance(consumerId);
* }*/
}
public void Skip(Int64 bytes)
{
if (bytes <= 0 || EOF())
{
return; //throw error/warning when bytes < 0
}
lock (syncRoot) {
Int64 bytesSkipped = Math.Min(buffer.GetBlock(consumerId).Length - dataInfo.Offset, bytes);
dataInfo.Offset += bytesSkipped;
bytes -= bytesSkipped;
byte[] block = buffer.GetBlock(consumerId);
if (dataInfo.Offset == block.Length)
{
dataInfo.Advance();
}
while (bytes != 0)
{
if (bytes > (block.Length - dataInfo.Offset))
{
bytes -= block.Length - dataInfo.Offset;
localStartPosition += block.Length;
dataInfo.Offset = 0;
while (!buffer.CanRead(consumerId))
{
Thread.Sleep(20);
}
buffer.Advance(consumerId);
if (bytes != 0 && Position == Length)
{
throw new Exception("Skip: Unexpected EOF");
}
block = buffer.GetBlock(consumerId);
}
else
{
dataInfo.Offset += Math.Min(bytes, length - Position);
//dataInfo.Offset += bytes;
bytes = 0;
}
}
}
}
