diff options
author | Jaroslav Kysela <perex@perex.cz> | 2003-12-18 12:14:17 +0000 |
---|---|---|
committer | Jaroslav Kysela <perex@perex.cz> | 2003-12-18 12:14:17 +0000 |
commit | 319c46a982747ad0a1973fc9ce5bb50d06043a79 (patch) | |
tree | 87c8aa23898376e6814d8effda4d2224ccf4e62c | |
parent | a741526c44dc02bce3b65a8f2440ab00638d43a5 (diff) |
Added queue_timer.c by Chris Cannam <cannam@all-day-breakfast.com>
-rw-r--r-- | test/Makefile.am | 3 | ||||
-rw-r--r-- | test/queue_timer.c | 125 |
2 files changed, 127 insertions, 1 deletions
diff --git a/test/Makefile.am b/test/Makefile.am index e7ac2abb..46a8297e 100644 --- a/test/Makefile.am +++ b/test/Makefile.am @@ -1,6 +1,6 @@ check_PROGRAMS=control pcm latency seq \ playmidi1 timer rawmidi midiloop \ - omixer code oldapi + omixer code oldapi queue_timer control_LDADD=../src/libasound.la pcm_LDADD=../src/libasound.la @@ -12,6 +12,7 @@ rawmidi_LDADD=../src/libasound.la midiloop_LDADD=../src/libasound.la omixer_LDADD=../src/libasound.la oldapi_LDADD=../src/libasound.la +queue_timer_LDADD=../src/libasound.la code_CFLAGS=-Wall -pipe -g -O2 INCLUDES=-I$(top_srcdir)/include diff --git a/test/queue_timer.c b/test/queue_timer.c new file mode 100644 index 00000000..742756f4 --- /dev/null +++ b/test/queue_timer.c @@ -0,0 +1,125 @@ +#include <unistd.h> +#include <sys/time.h> +#include <alsa/asoundlib.h> +#include <alsa/seq.h> + +void normalize(struct timeval *tv) +{ + if (tv->tv_sec == 0) { + while (tv->tv_usec <= -1000000) { tv->tv_usec += 1000000; --tv->tv_sec; } + while (tv->tv_usec >= 1000000) { tv->tv_usec -= 1000000; ++tv->tv_sec; } + } else if (tv->tv_sec < 0) { + while (tv->tv_usec <= -1000000) { tv->tv_usec += 1000000; --tv->tv_sec; } + while (tv->tv_usec > 0) { tv->tv_usec -= 1000000; ++tv->tv_sec; } + } else { + while (tv->tv_usec >= 1000000) { tv->tv_usec -= 1000000; ++tv->tv_sec; } + while (tv->tv_usec < 0) { tv->tv_usec += 1000000; --tv->tv_sec; } + } +} + +int +main(int argc, char **argv) +{ + snd_seq_t *handle; + int portid; + int npfd; + struct pollfd *pfd; + int queue; + int i; + int rval; + struct timeval starttv, prevdiff; + int countdown = -1; + snd_seq_queue_timer_t *timer; + snd_timer_id_t *timerid; + + if (snd_seq_open(&handle, "hw", SND_SEQ_OPEN_DUPLEX, 0) < 0) { + fprintf(stderr, "failed to open ALSA sequencer interface\n"); + return 1; + } + + snd_seq_set_client_name(handle, "generator"); + + if ((portid = snd_seq_create_simple_port + (handle, "generator", + SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_READ, 0)) < 0) { + fprintf(stderr, "failed to create ALSA sequencer port\n"); + return 1; + } + + if ((queue = snd_seq_alloc_queue(handle)) < 0) { + fprintf(stderr, "failed to create ALSA sequencer queue\n"); + return 1; + } +/* + snd_seq_queue_timer_alloca(&timer); + snd_seq_get_queue_timer(handle, queue, timer); + snd_timer_id_alloca(&timerid); + snd_timer_id_set_class(timerid, SND_TIMER_CLASS_PCM); + snd_timer_id_set_sclass(timerid, SND_TIMER_SCLASS_NONE); + snd_timer_id_set_card(timerid, 0); + snd_timer_id_set_device(timerid, 0); + snd_timer_id_set_subdevice(timerid, 0); + snd_seq_queue_timer_set_id(timer, timerid); + snd_seq_set_queue_timer(handle, queue, timer); +*/ + snd_seq_start_queue(handle, queue, 0); + snd_seq_drain_output(handle); + + gettimeofday(&starttv, 0); + prevdiff.tv_sec = 0; + prevdiff.tv_usec = 0; + + while (countdown != 0) { + + snd_seq_queue_status_t *status; + const snd_seq_real_time_t *rtime; + struct timeval tv, diff, diffdiff; + + snd_seq_queue_status_alloca(&status); + + snd_seq_get_queue_status(handle, queue, status); + rtime = snd_seq_queue_status_get_real_time(status); + + gettimeofday(&tv, 0); + + tv.tv_sec -= starttv.tv_sec; + tv.tv_usec -= starttv.tv_usec; + normalize(&tv); + + diff.tv_sec = tv.tv_sec - rtime->tv_sec; + diff.tv_usec = tv.tv_usec - rtime->tv_nsec / 1000; + normalize(&diff); + + diffdiff.tv_sec = diff.tv_sec - prevdiff.tv_sec; + diffdiff.tv_usec = diff.tv_usec - prevdiff.tv_usec; + normalize(&diffdiff); + prevdiff = diff; + + fprintf(stderr, " real time: %12ld sec %8ld usec\nqueue time: %12ld sec %8ld usec\n diff: %12ld sec %8ld usec\n diffdiff: %12ld sec %8ld usec\n", + tv.tv_sec, tv.tv_usec, + rtime->tv_sec, rtime->tv_nsec / 1000, + diff.tv_sec, diff.tv_usec, + diffdiff.tv_sec, diffdiff.tv_usec); + + if (diffdiff.tv_usec > 5000 || + diffdiff.tv_usec < -5000) { + fprintf(stderr, "oops! queue slipped\n"); + if (tv.tv_sec < 5) { + fprintf(stderr, "(ignoring in first few seconds)\n"); + } else { + countdown = 2; + } + } else { + if (countdown > 0) --countdown; + } + + fprintf(stderr, "\n"); +// sleep(1); + struct timespec ts; + ts.tv_sec = 0; + ts.tv_nsec = 500000000; + nanosleep(&ts, 0); + } + return EXIT_SUCCESS; +} + |