comedi_get_buffer_contents — streaming buffer status
#include <comedilib.h>
int comedi_get_buffer_contents( | comedi_t * device, |
unsigned int subdevice); |
The function comedi_get_buffer_contents is used on a subdevice
that has a Comedi command in progress to get the number of unread bytes. For
a streaming input command, this is the number of bytes that can be read. For
a streaming output command, subtracting this from the buffer size gives the
space available to be written.