comedi_mark_buffer_read -- streaming buffer status
Synopsis
#include <comedilib.h>
int comedi_mark_buffer_read(comedi_t * device, unsigned int subdevice, unsigned int num_bytes);
Description
The function comedi_mark_buffer_read() is used on a subdevice
that has a Comedi command in progress. This function can be
used to indicate that the next num_bytes bytes in the buffer
are no longer needed and may be discarded.
If there is an error, -1 is returned.