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Fixed event handling

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This commit is contained in:
Jaroslav Kysela 2001-07-23 13:08:44 +00:00
parent 72c6afdd77
commit 2ecee3b257
1 changed files with 34 additions and 5 deletions
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39
alsamixer/alsamixer.c
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@ -212,6 +212,7 @@ static snd_mixer_selem_channel_id_t mixer_elem_chn[][2] = {
static void *mixer_sid = NULL;
static int mixer_n_selems = 0;
static int mixer_changed_state = 1;
/* split scontrols */
static int mixer_n_elems = 0;
@ -1241,6 +1242,13 @@ mixer_show_procinfo (void)
vbuffer_kill (&vbuf);
}
static int
mixer_event (snd_mixer_t *mixer, unsigned int mask, snd_mixer_elem_t *elem)
{
mixer_changed_state = 1;
return 0;
}
static void
mixer_init (void)
{
@ -1262,6 +1270,7 @@ mixer_init (void)
mixer_abort (ERR_FCN, "snd_mixer_attach", err);
if ((err = snd_mixer_selem_register (mixer_handle, NULL, NULL)) < 0)
mixer_abort (ERR_FCN, "snd_mixer_selem_register", err);
snd_mixer_set_callback (mixer_handle, mixer_event);
if ((err = snd_mixer_load (mixer_handle)) < 0)
mixer_abort (ERR_FCN, "snd_mixer_load", err);
@ -1281,10 +1290,14 @@ mixer_reinit (void)
int focus_type = -1;
snd_mixer_selem_id_alloca(&focus_gid);
if (!mixer_changed_state)
return;
if (mixer_sid) {
snd_mixer_selem_id_copy(focus_gid, (snd_mixer_selem_id_t *)(((char *)mixer_sid) + snd_mixer_selem_id_sizeof() * mixer_grpidx[mixer_focus_elem]));
focus_type = mixer_type[mixer_focus_elem];
}
__again:
mixer_changed_state = 0;
if (mixer_sid != NULL)
free(mixer_sid);
mixer_sid = malloc(snd_mixer_selem_id_sizeof() * snd_mixer_get_count(mixer_handle));
@ -1294,6 +1307,10 @@ mixer_reinit (void)
mixer_n_selems = 0;
for (elem = snd_mixer_first_elem(mixer_handle); elem; elem = snd_mixer_elem_next(elem)) {
sid = (snd_mixer_selem_id_t *)(((char *)mixer_sid) + snd_mixer_selem_id_sizeof() * mixer_n_selems);
if (mixer_changed_state)
goto __again;
if (!snd_mixer_selem_is_active(elem))
continue;
snd_mixer_selem_get_id(elem, sid);
mixer_n_selems++;
}
@ -1301,12 +1318,16 @@ mixer_reinit (void)
mixer_n_elems = 0;
for (idx = 0; idx < mixer_n_selems; idx++) {
sid = (snd_mixer_selem_id_t *)(((char *)mixer_sid) + snd_mixer_selem_id_sizeof() * idx);
if (mixer_changed_state)
goto __again;
elem = snd_mixer_find_selem(mixer_handle, sid);
if (elem == NULL)
CHECK_ABORT (ERR_FCN, "snd_mixer_find_selem()", -EINVAL);
for (i = 0; i < MIXER_ELEM_END; i++) {
int ok;
for (j = ok = 0; j < 2; j++) {
if (mixer_changed_state)
goto __again;
if (snd_mixer_selem_has_playback_channel(elem, mixer_elem_chn[i][j]))
ok++;
}
@ -1328,12 +1349,16 @@ mixer_reinit (void)
elem_index = 0;
for (idx = 0; idx < mixer_n_selems; idx++) {
sid = (snd_mixer_selem_id_t *)(((char *)mixer_sid) + snd_mixer_selem_id_sizeof() * idx);
if (mixer_changed_state)
goto __again;
elem = snd_mixer_find_selem(mixer_handle, sid);
if (elem == NULL)
CHECK_ABORT (ERR_FCN, "snd_mixer_find_selem()", -EINVAL);
for (i = 0; i < MIXER_ELEM_END; i++) {
int ok;
for (j = ok = 0; j < 2; j++) {
if (mixer_changed_state)
goto __again;
if (snd_mixer_selem_has_playback_channel(elem, mixer_elem_chn[i][j]))
ok++;
}
@ -1362,6 +1387,8 @@ mixer_reinit (void)
}
}
if (mixer_changed_state)
goto __again;
}
static void
@ -1464,9 +1491,8 @@ static int
mixer_iteration (void)
{
struct timeval delay = { 0, 0 };
int count;
int idx, count, err;
struct pollfd *fds;
int err;
int finished = 0;
int key = 0;
int old_view;
@ -1503,9 +1529,12 @@ mixer_iteration (void)
}
if (finished) {
if (fds->revents & POLLIN) {
snd_mixer_handle_events(mixer_handle);
finished = 0;
for (idx = 1; idx <= count; idx++) {
if (fds[idx].revents & (POLLIN|POLLOUT)) {
snd_mixer_handle_events(mixer_handle);
mixer_reinit();
break;
}
}
}