unsafe internal int StreamCallback(libhackrf.hackrf_transfer *transfer)
{
if (disposed || transfer == null)
{
return(0);
}
if (device.mode == NetHackrf.transceiver_mode_t.RX)
{
buffer_semaphore.WaitOne();
for (int i = 0; i < transfer->valid_length; i++)
{
stream_buffer[write_pos] = transfer->buffer[i];
write_pos++;
if (write_pos >= stream_buffer.Length)
{
write_pos = 0;
}
if (write_pos == read_pos)
{
SetOverrunError();
}
}
buffer_semaphore.Release();
set_event();
}
else if (device.mode == NetHackrf.transceiver_mode_t.TX)
{
buffer_semaphore.WaitOne();
for (int i = 0; i < transfer->valid_length; i++)
{
//transfer->buffer[i] = stream_buffer[read_pos];
transfer->buffer[i] = stream_buffer[read_pos];
read_pos++;
if (read_pos >= stream_buffer.Length)
{
read_pos = 0;
}
if (read_pos == write_pos)
{
SetOverrunError();
break;
}
}
buffer_semaphore.Release();
set_event();
}
return(0);
}
unsafe internal int StreamCallback(libhackrf.hackrf_transfer *transfer) // hackrf.dll calls this method to exchange data with device
{
if (disposed || transfer == null) // this method should be immedeately ended if stream is closed
{
return(0);
}
if (device.mode == NetHackrf.transceiver_mode_t.RX)
{
buffer_semaphore.WaitOne();
for (int i = 0; i < transfer->valid_length; i++)
{
stream_buffer[write_pos] = transfer->buffer[i];
write_pos++;
if (write_pos >= stream_buffer.Length)
{
write_pos = 0;
}
if (write_pos == read_pos)
{
SetOverrunError();
}
}
buffer_semaphore.Release();
set_event();
}
else if (device.mode == NetHackrf.transceiver_mode_t.TX)
{
buffer_semaphore.WaitOne();
for (int i = 0; i < transfer->valid_length; i++)
{
transfer->buffer[i] = stream_buffer[read_pos];
read_pos++;
if (read_pos >= stream_buffer.Length)
{
read_pos = 0;
}
if (read_pos == write_pos)
{
SetOverrunError();
break;
}
}
buffer_semaphore.Release();
set_event();
}
return(0);
}
