private unsafe static void _reader(int totalChunks, readFunc rf)
{
byte *buffer = stackalloc byte[maxPacketSize];
Interlocked.Increment(ref threadsStarted);
SpinWait sw = new SpinWait();
int readed = 0;
while (Volatile.Read(ref threadsStarted) != Volatile.Read(ref nThreads) + 1)
{
sw.SpinOnce();
}
while (chunksReaded != totalChunks)
{
Span <byte> span = rf(out bool success, buffer);
if (!success)
{
sw.SpinOnce();
continue;
}
readed = span.Length;
if (rf == readStream)
{
if (!verifyPacket(buffer, readed))
{
Console.WriteLine("ERROR!");
Environment.Exit(-1);
}
}
else
{
fixed(byte *bfRef = &MemoryMarshal.GetReference(span))
if (!verifyPacket(bfRef, readed))
{
Console.WriteLine("ERROR!");
Environment.Exit(-1);
}
}
chunksReaded++;
totalBytesReaded += readed;
}
}
static bool cpImage(Tiff inImage, Tiff outImage, readFunc fin, writeFunc fout, int imagelength, int imagewidth, short spp)
{
bool status = false;
int scanlinesize = inImage.RasterScanlineSize();
int bytes = scanlinesize * imagelength;
/*
* XXX: Check for integer overflow.
*/
if (scanlinesize != 0 && imagelength != 0 && (bytes / imagelength == scanlinesize))
{
byte[] buf = new byte[bytes];
if (fin(inImage, buf, imagelength, imagewidth, spp))
status = fout(outImage, buf, imagelength, imagewidth, spp);
}
else
{
Tiff.Error(inImage.FileName(), "Error, no space for image buffer");
}
return status;
}