comedi_get_buffer_read_offset — streaming buffer read offset
|comedi_t * device,|
|unsigned int subdevice|
comedi_get_buffer_read_offset is used on
a subdevice that has a Comedi command in progress to get the current read
position in the streaming buffer as an offset in bytes from the start of
the buffer. The position will wrap around to 0 when it reaches the buffer
size. This offset is only useful for memory mapped buffers.
This function replaces
comedi_get_buffer_offset and has the same functionality.