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mixer API - extend simple enumerated controls for direction tests

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Added snd_mixer_selem_is_enum_playback() and
snd_mixer_selem_is_enum_capture() functions.
This commit is contained in:
Jaroslav Kysela 2005-08-24 10:41:16 +00:00
parent d9be3e3556
commit 5af75610f2
5 changed files with 38 additions and 3 deletions
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8
src/mixer/simple_none.c
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@ -721,7 +721,8 @@ static int simple_update(snd_mixer_elem_t *melem)
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
caps |= SM_CAP_ENUM;
/* FIXME: differentiate some controls */
caps |= SM_CAP_PENUM|SM_CAP_CENUM;
}
if (pchannels > 32)
pchannels = 32;
@ -910,6 +911,11 @@ static int is_ops(snd_mixer_elem_t *elem, int dir, int cmd, int val)
return (unsigned int) val < s->str[dir].channels;
case SM_OPS_IS_ENUMERATED:
if (val == 1) {
if (dir == SM_PLAY && (s->selem.caps & SM_CAP_PENUM))
return 1;
return !!(s->selem.caps & SM_CAP_CENUM);
}
return s->ctls[CTL_ENUMLIST].elem != 0;
case SM_OPS_IS_ENUMCNT: