diff options
Diffstat (limited to 'src/tests')
| -rw-r--r-- | src/tests/alsa-time-test.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/src/tests/alsa-time-test.c b/src/tests/alsa-time-test.c index ab194ee44..3c82fdc73 100644 --- a/src/tests/alsa-time-test.c +++ b/src/tests/alsa-time-test.c @@ -5,6 +5,8 @@ #include <assert.h> #include <inttypes.h> #include <time.h> +#include <unistd.h> +#include <pthread.h> #include <alsa/asoundlib.h> @@ -16,7 +18,7 @@ static uint64_t timespec_us(const struct timespec *ts) { int main(int argc, char *argv[]) { const char *dev; - int r, cap; + int r, cap, count = 0; snd_pcm_hw_params_t *hwparams; snd_pcm_sw_params_t *swparams; snd_pcm_status_t *status; @@ -26,11 +28,20 @@ int main(int argc, char *argv[]) { snd_pcm_uframes_t boundary, buffer_size = 44100/10; /* 100s */ int dir = 1; struct timespec start, last_timestamp = { 0, 0 }; - uint64_t start_us; + uint64_t start_us, last_us = 0; snd_pcm_sframes_t last_avail = 0, last_delay = 0; struct pollfd *pollfds; int n_pollfd; int64_t sample_count = 0; + struct sched_param sp; + + r = -1; +#ifdef _POSIX_PRIORITY_SCHEDULING + sp.sched_priority = 5; + r = pthread_setschedparam(pthread_self(), SCHED_RR, &sp); +#endif + if (r) + printf("Could not get RT prio. :(\n"); snd_pcm_hw_params_alloca(&hwparams); snd_pcm_sw_params_alloca(&swparams); @@ -128,6 +139,8 @@ int main(int argc, char *argv[]) { r = snd_pcm_poll_descriptors(pcm, pollfds, n_pollfd); assert(r == n_pollfd); + printf("Starting. Buffer size is %u frames\n", (unsigned int) buffer_size); + if (cap) { r = snd_pcm_start(pcm); assert(r == 0); @@ -203,7 +216,11 @@ int main(int argc, char *argv[]) { else pos = (unsigned long long) ((sample_count - handled + delay) * 1000000LU / 44100); - printf("%llu\t%llu\t%llu\t%llu\t%li\t%li\t%i\t%i\t%i\n", + if (count++ % 50 == 0) + printf("Elapsed\tCPU\tALSA\tPos\tSamples\tavail\tdelay\trevents\thandled\tstate\n"); + + printf("%llu\t%llu\t%llu\t%llu\t%llu\t%li\t%li\t%i\t%i\t%i\n", + (unsigned long long) (now_us - last_us), (unsigned long long) (now_us - start_us), (unsigned long long) (timestamp_us ? timestamp_us - start_us : 0), pos, @@ -222,6 +239,7 @@ int main(int argc, char *argv[]) { last_avail = avail; last_delay = delay; last_timestamp = timestamp; + last_us = now_us; } return 0; |