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Timer changes..

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This commit is contained in:
Jaroslav Kysela 1999-03-11 13:07:12 +00:00
parent 26c91a223b
commit e735bf70dd
1 changed files with 81 additions and 24 deletions
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105
test/timer.c
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@ -1,4 +1,5 @@
#include <stdio.h> #include <stdio.h>
#include <stdlib.h>
#include <string.h> #include <string.h>
#include "../include/asoundlib.h" #include "../include/asoundlib.h"
@ -18,15 +19,63 @@ void show_status(void *handle)
printf(" queue = %i\n", status.queue); printf(" queue = %i\n", status.queue);
} }
void main(void) void read_loop(void *handle, int master_ticks, int timeout)
{ {
int err; int err, max;
fd_set in;
struct timeval tv;
snd_timer_read_t tr;
while (master_ticks-- > 0) {
FD_ZERO(&in);
max = snd_timer_file_descriptor(handle);
FD_SET(max, &in);
tv.tv_sec = timeout;
tv.tv_usec = 0;
if ((err = select(max + 1, &in, NULL, NULL, &tv)) < 0) {
fprintf(stderr, "select error %i (%s)\n", err, strerror(err));
exit(0);
}
if (err == 0) {
fprintf(stderr, "timer time out!!\n");
exit(0);
}
while (snd_timer_read(handle, &tr, sizeof(tr)) == sizeof(tr)) {
printf("TIMER: resolution = %lu, ticks = %lu\n",
tr.resolution, tr.ticks);
}
}
}
void main(int argc, char *argv[])
{
int idx, err;
int timer = SND_TIMER_SYSTEM;
int slave = 0;
int slave_type = SND_TIMER_STYPE_SEQUENCER, slave_id = 0;
void *handle; void *handle;
snd_timer_general_info_t ginfo; snd_timer_general_info_t ginfo;
snd_timer_select_t sel; snd_timer_select_t sel;
snd_timer_info_t info; snd_timer_info_t info;
snd_timer_params_t params; snd_timer_params_t params;
idx = 1;
while (idx < argc) {
if (!strncmp(argv[idx], "timer=", 6)) {
timer = atoi(argv[idx]+6);
} else if (!strcmp(argv[idx], "slave")) {
slave = 1;
} else if (!strncmp(argv[idx], "slave_type=", 11)) {
slave_type = atoi(argv[idx]+11);
} else if (!strncmp(argv[idx], "slave_id=", 9)) {
slave_id = atoi(argv[idx]+9);
}
idx++;
}
if (slave && slave_type == SND_TIMER_STYPE_NONE) {
fprintf(stderr, "sync_type is not set\n");
exit(0);
}
if ((err = snd_timer_open(&handle))<0) { if ((err = snd_timer_open(&handle))<0) {
fprintf(stderr, "timer open %i (%s)\n", err, snd_strerror(err)); fprintf(stderr, "timer open %i (%s)\n", err, snd_strerror(err));
exit(0); exit(0);
@ -36,39 +85,47 @@ void main(void)
exit(0); exit(0);
} }
printf("Global timers = %i\n", ginfo.count); printf("Global timers = %i\n", ginfo.count);
printf("Using timer %i, slave %i, slave_type %i, slave_id %i\n", timer, slave, slave_type, slave_id);
bzero(&sel, sizeof(sel)); bzero(&sel, sizeof(sel));
sel.number = SND_TIMER_SYSTEM; sel.slave = slave;
sel.slave = 0; if (!sel.slave) {
sel.data.number = timer;
} else {
sel.data.slave.type = slave_type;
sel.data.slave.id = slave_id;
}
if ((err = snd_timer_select(handle, &sel)) < 0) { if ((err = snd_timer_select(handle, &sel)) < 0) {
fprintf(stderr, "timer select %i (%s)\n", err, snd_strerror(err)); fprintf(stderr, "timer select %i (%s)\n", err, snd_strerror(err));
exit(0); exit(0);
} }
if ((err = snd_timer_info(handle, &info)) < 0) { if (!sel.slave) {
fprintf(stderr, "timer info %i (%s)\n", err, snd_strerror(err)); if ((err = snd_timer_info(handle, &info)) < 0) {
exit(0); fprintf(stderr, "timer info %i (%s)\n", err, snd_strerror(err));
} exit(0);
printf("Timer %i info:\n", sel.number); }
printf(" flags = 0x%x\n", info.flags); printf("Timer %i info:\n", sel.data.number);
printf(" id = '%s'\n", info.id); printf(" flags = 0x%x\n", info.flags);
printf(" name = '%s'\n", info.name); printf(" id = '%s'\n", info.id);
printf(" max ticks = %lu\n", info.ticks); printf(" name = '%s'\n", info.name);
printf(" average resolution = %lu\n", info.resolution); printf(" max ticks = %lu\n", info.ticks);
bzero(&params, sizeof(params)); printf(" average resolution = %lu\n", info.resolution);
params.flags = SND_TIMER_PSFLG_AUTO; bzero(&params, sizeof(params));
params.ticks = (1000000000 / info.resolution) / 50; /* 50Hz */ params.flags = SND_TIMER_PSFLG_AUTO;
if (params.ticks < 1) params.ticks = (1000000000 / info.resolution) / 50; /* 50Hz */
params.ticks = 1; if (params.ticks < 1)
printf("Using %lu tick(s)\n", params.ticks); params.ticks = 1;
if ((err = snd_timer_params(handle, &params)) < 0) { printf("Using %lu tick(s)\n", params.ticks);
fprintf(stderr, "timer params %i (%s)\n", err, snd_strerror(err)); if ((err = snd_timer_params(handle, &params)) < 0) {
exit(0); fprintf(stderr, "timer params %i (%s)\n", err, snd_strerror(err));
exit(0);
}
} }
show_status(handle); show_status(handle);
if ((err = snd_timer_start(handle)) < 0) { if ((err = snd_timer_start(handle)) < 0) {
fprintf(stderr, "timer start %i (%s)\n", err, snd_strerror(err)); fprintf(stderr, "timer start %i (%s)\n", err, snd_strerror(err));
exit(0); exit(0);
} }
usleep(500000); read_loop(handle, 25, sel.slave ? 10000 : 1);
show_status(handle); show_status(handle);
snd_timer_close(handle); snd_timer_close(handle);
} }