diff options
Diffstat (limited to 'cras/src/common/cras_util.h')
| -rw-r--r-- | cras/src/common/cras_util.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/cras/src/common/cras_util.h b/cras/src/common/cras_util.h index 01034242..96985ab2 100644 --- a/cras/src/common/cras_util.h +++ b/cras/src/common/cras_util.h @@ -187,6 +187,33 @@ static inline uint64_t cras_frames_since_time(const struct timespec *beg, return cras_time_to_frames(&time_since, rate); } +/* Calculates frames until time end. */ +static inline uint64_t cras_frames_until_time(const struct timespec *end, + unsigned int rate) +{ + struct timespec now, time_until; + + clock_gettime(CLOCK_MONOTONIC_RAW, &now); + if (!timespec_after(end, &now)) + return 0; + + subtract_timespecs(end, &now, &time_until); + return cras_time_to_frames(&time_until, rate); +} + +/* Returns true if the difference between a and b is shorter than t. */ +static inline bool timespec_diff_shorter_than(const struct timespec *a, + const struct timespec *b, + const struct timespec *t) +{ + struct timespec diff; + if (timespec_after(a, b)) + subtract_timespecs(a, b, &diff); + else + subtract_timespecs(b, a, &diff); + return timespec_after(t, &diff); +} + /* Poll on the given file descriptors. * * See ppoll(). This implementation changes the value of timeout to the |