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| author | Jaroslav Kysela <perex@perex.cz> | 2022-11-14 21:26:39 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2022-11-14 21:27:09 +0100 |
| commit | a0836e2af1f2c37b66e723d8caf399e80b76825b (patch) | |
| tree | 37feb29b49e0b6c69a61d2cadaf61fc07b9b395b | |
| parent | 3e4aeba25bf4a4808183c4b64270f7321b436c13 (diff) | |
| download | alsa-lib-a0836e2af1f2c37b66e723d8caf399e80b76825b.tar.gz | |
latency: add timestamps to the POS lines
- remove first capture pos line
- measure the snd_pcm_start() call, too
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
| -rw-r--r-- | test/latency.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/test/latency.c b/test/latency.c index 91bef1a1..3aff37c1 100644 --- a/test/latency.c +++ b/test/latency.c @@ -556,7 +556,7 @@ int main(int argc, char *argv[]) snd_pcm_t *phandle, *chandle; char *buffer; int err, latency, morehelp; - int ok, first_avail; + int ok; snd_timestamp_t p_tstamp, c_tstamp; ssize_t r, cap_avail, cap_avail_max, pbk_fill, pbk_fill_min; size_t frames_in, frames_out, in_max; @@ -723,12 +723,14 @@ int main(int argc, char *argv[]) break; } + if (realtime_check) + timestamp_now(&tstamp_start); if ((err = snd_pcm_start(chandle)) < 0) { printf("Go error: %s\n", snd_strerror(err)); exit(0); } if (realtime_check) - timestamp_now(&tstamp_start); + printf("[%lldus] Stream start\n", timestamp_diff_micro(&tstamp_start)); gettimestamp(phandle, &p_tstamp); gettimestamp(chandle, &c_tstamp); #if 0 @@ -740,7 +742,6 @@ int main(int argc, char *argv[]) ok = 1; in_max = 0; - first_avail = 1; while (ok && frames_in < loop_limit) { cap_avail = latency; if (sys_latency > 0) { @@ -751,12 +752,6 @@ int main(int argc, char *argv[]) ok = 0; break; } - if (first_avail && realtime_check) { - long long diff = timestamp_diff_micro(&tstamp_start); - long long pos = frames_to_micro(cap_avail); - printf("POS FIRST CHECK: c=%zd (rt=%lldus)\n", cap_avail, pos - diff); - first_avail = 0; - } } else if (use_poll) { /* use poll to wait for next event */ snd_pcm_wait(chandle, 1000); @@ -775,8 +770,8 @@ int main(int argc, char *argv[]) long long diff = timestamp_diff_micro(&tstamp_start); long long cap_pos = frames_to_micro(frames_in + cap_avail); long long pbk_pos = frames_to_micro(frames_out - pbk_fill); - printf("POS: p=%zd (min=%zd, rt=%lldus) c=%zd (max=%zd, rt=%lldus)\n", - pbk_fill, pbk_fill_min, pbk_pos - diff, + printf("[%lldus] POS: p=%zd (min=%zd, rt=%lldus) c=%zd (max=%zd, rt=%lldus)\n", + diff, pbk_fill, pbk_fill_min, pbk_pos - diff, cap_avail, cap_avail_max, cap_pos - diff); } else if (pos_dump) { printf("POS: p=%zd (min=%zd), c=%zd (max=%zd)\n", |