The following changes since commit a0d271cbfed1dd50278c6b06bead3d00ba0a88f9:
Linux 3.6 (2012-09-30 16:47:46 -0700)
are available in the git repository at: git://git.alsa-project.org/alsa-kprivate.git dummy-ctl-inactive
---------------------------------------------------------------- Quite a few mixer applications do not handle deactivated controls correctly. This patch adds such controls to snd-dummy to make crash^H^H^H^H^Htesting these apps easier. ---------------------------------------------------------------- Clemens Ladisch (1): ALSA: dummy: allow disabling mixer controls
sound/drivers/dummy.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++- 1 files changed, 71 insertions(+), 2 deletions(-)
diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c index 54bb664..4f522cf 100644 --- a/sound/drivers/dummy.c +++ b/sound/drivers/dummy.c @@ -134,6 +134,9 @@ struct snd_dummy { spinlock_t mixer_lock; int mixer_volume[MIXER_ADDR_LAST+1][2]; int capture_source[MIXER_ADDR_LAST+1][2]; + int iobox; + struct snd_kcontrol *cd_volume_ctl; + struct snd_kcontrol *cd_switch_ctl; const struct dummy_timer_ops *timer_ops; };
@@ -817,6 +820,57 @@ static int snd_dummy_capsrc_put(struct snd_kcontrol *kcontrol, struct snd_ctl_el return change; }
+static int snd_dummy_iobox_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *info) +{ + const char *const names[] = { "None", "CD Player" }; + + return snd_ctl_enum_info(info, 1, 2, names); +} + +static int snd_dummy_iobox_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *value) +{ + struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); + + value->value.enumerated.item[0] = dummy->iobox; + return 0; +} + +static int snd_dummy_iobox_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *value) +{ + struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol); + int changed; + + if (value->value.enumerated.item[0] > 1) + return -EINVAL; + + changed = value->value.enumerated.item[0] != dummy->iobox; + if (changed) { + dummy->iobox = value->value.enumerated.item[0]; + + if (dummy->iobox) { + dummy->cd_volume_ctl->vd[0].access &= + ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; + dummy->cd_switch_ctl->vd[0].access &= + ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; + } else { + dummy->cd_volume_ctl->vd[0].access |= + SNDRV_CTL_ELEM_ACCESS_INACTIVE; + dummy->cd_switch_ctl->vd[0].access |= + SNDRV_CTL_ELEM_ACCESS_INACTIVE; + } + + snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO, + &dummy->cd_volume_ctl->id); + snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO, + &dummy->cd_switch_ctl->id); + } + + return changed; +} + static struct snd_kcontrol_new snd_dummy_controls[] = { DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER), DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER), @@ -827,22 +881,37 @@ DUMMY_CAPSRC("Line Capture Switch", 0, MIXER_ADDR_LINE), DUMMY_VOLUME("Mic Volume", 0, MIXER_ADDR_MIC), DUMMY_CAPSRC("Mic Capture Switch", 0, MIXER_ADDR_MIC), DUMMY_VOLUME("CD Volume", 0, MIXER_ADDR_CD), -DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD) +DUMMY_CAPSRC("CD Capture Switch", 0, MIXER_ADDR_CD), +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "External I/O Box", + .info = snd_dummy_iobox_info, + .get = snd_dummy_iobox_get, + .put = snd_dummy_iobox_put, +}, };
static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy) { struct snd_card *card = dummy->card; + struct snd_kcontrol *kcontrol; unsigned int idx; int err;
spin_lock_init(&dummy->mixer_lock); strcpy(card->mixername, "Dummy Mixer"); + dummy->iobox = 1;
for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) { - err = snd_ctl_add(card, snd_ctl_new1(&snd_dummy_controls[idx], dummy)); + kcontrol = snd_ctl_new1(&snd_dummy_controls[idx], dummy); + err = snd_ctl_add(card, kcontrol); if (err < 0) return err; + if (!strcmp(kcontrol->id.name, "CD Volume")) + dummy->cd_volume_ctl = kcontrol; + else if (!strcmp(kcontrol->id.name, "CD Capture Switch")) + dummy->cd_switch_ctl = kcontrol; + } return 0; }