Add raw1394_read_cycle_timer_and_clock() API

This is an extension relative to raw1394_read_cycle_timer().
It lets the client choose a system clock other than CLOCK_REALTIME.

Use case: http://subversion.ffado.org/ticket/242

The underlying ioctl supports reading the system clock with nanoseconds
resolution.  The new libraw1394 call sticks with microseconds resolution
though.  This makes transition from (or parallel use with)
raw1394_read_cycle_timer() easier.  Besides, the call itself takes longer
than a  microsecond, primarily due to a costly MMIO read (on many
controllers even three or more MMIO reads).

Unit tests with CLOCK_MONOTONIC and CLOCK_MONOTONIC_RAW are added to
testlibraw as well.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

0 files changed, 0 insertions, 0 deletions