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A few fixes and added undocumented 'sevents' command

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This commit is contained in:
Jaroslav Kysela 2000-08-16 13:36:24 +00:00
parent fbb7b7c4e9
commit ccffbc6e76
1 changed files with 74 additions and 3 deletions
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77
amixer/amixer.c
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@ -829,7 +829,7 @@ static int sset(int argc, char *argv[], int roflag)
}
memset(&control, 0, sizeof(control));
control.sid = sid;
if (snd_mixer_simple_control_read(handle, &control)<0) {
if ((err = snd_mixer_simple_control_read(handle, &control))<0) {
error("Unable to read simple control '%s',%i: %s\n", simple_name(sid.name, name), sid.index, snd_strerror(err));
snd_mixer_close(handle);
return err;
@ -880,7 +880,7 @@ static int sset(int argc, char *argv[], int roflag)
return err;
}
}
if (snd_mixer_simple_control_write(handle, &control)<0) {
if ((err = snd_mixer_simple_control_write(handle, &control))<0) {
error("Unable to write control '%s',%i: %s\n", simple_name(sid.name, name), sid.index, snd_strerror(err));
snd_mixer_close(handle);
return err;
@ -966,7 +966,8 @@ static int events(int argc, char *argv[])
ctl_poll.fd = snd_ctl_file_descriptor(handle);
ctl_poll.events = POLLIN;
ctl_poll.revents = 0;
if (poll(&ctl_poll, 1, -1)) {
if ((res = poll(&ctl_poll, 1, -1)) > 0) {
printf("Poll ok: %i\n", res);
res = snd_ctl_hevent(handle);
if (res > 0)
printf("%i events processed\n", res);
@ -975,6 +976,74 @@ static int events(int argc, char *argv[])
snd_ctl_close(handle);
}
static void sevents_rebuild(snd_mixer_t *handle, void *private_data)
{
printf("event rebuild\n");
}
static void sevents_value(snd_mixer_t *handle, void *private_data, snd_mixer_sid_t *sid)
{
char name[simple_name_size];
printf("event value: '%s',%i\n", simple_name(sid->name, name), sid->index);
}
static void sevents_change(snd_mixer_t *handle, void *private_data, snd_mixer_sid_t *sid)
{
char name[simple_name_size];
printf("event change: '%s',%i\n", simple_name(sid->name, name), sid->index);
}
static void sevents_add(snd_mixer_t *handle, void *private_data, snd_mixer_sid_t *sid)
{
char name[simple_name_size];
printf("event add: '%s',%i\n", simple_name(sid->name, name), sid->index);
}
static void sevents_remove(snd_mixer_t *handle, void *private_data, snd_mixer_sid_t *sid)
{
char name[simple_name_size];
printf("event remove: '%s',%i\n", simple_name(sid->name, name), sid->index);
}
static int sevents(int argc, char *argv[])
{
snd_mixer_t *handle;
static snd_mixer_simple_callbacks_t callbacks = {
private_data: NULL,
rebuild: sevents_rebuild,
value: sevents_value,
change: sevents_change,
add: sevents_add,
remove: sevents_remove,
reserved: { NULL, }
};
int err;
if ((err = snd_mixer_open(&handle, card)) < 0) {
error("Mixer %i open error: %s\n", card, snd_strerror(err));
return err;
}
printf("Ready to listen...\n");
while (1) {
struct pollfd mixer_poll;
int res;
mixer_poll.fd = snd_mixer_file_descriptor(handle);
mixer_poll.events = POLLIN;
mixer_poll.revents = 0;
if ((res = poll(&mixer_poll, 1, -1)) > 0) {
printf("Poll ok: %i\n", res);
res = snd_mixer_simple_read(handle, &callbacks);
if (res > 0)
printf("%i events processed\n", res);
}
}
snd_mixer_close(handle);
}
int main(int argc, char *argv[])
{
int morehelp;
@ -1054,6 +1123,8 @@ int main(int argc, char *argv[])
return cset(argc - optind - 1, argc - optind > 1 ? argv + optind + 1 : NULL, 1) ? 1 : 0;
} else if (!strcmp(argv[optind], "events")) {
return events(argc - optind - 1, argc - optind > 1 ? argv + optind + 1 : NULL);
} else if (!strcmp(argv[optind], "sevents")) {
return sevents(argc - optind - 1, argc - optind > 1 ? argv + optind + 1 : NULL);
} else {
fprintf(stderr, "amixer: Unknown command '%s'...\n", argv[optind]);
}