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ctl: support extra information to user-defined element set

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In ALSA control feature, information of an element includes extra fields
to type-specific parameters; i.e. dimension. The fields can be extended in
future.

Meanwhile, current APIs to add user-defined element set can not support
such an extended fields. This may cause inconveniences in future.

This commit supports the fields, by changing APIs for element set.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2016-06-29 22:42:59 +09:00 • committed by Takashi Iwai
parent 7117d22cf2
commit f9e6011255
3 changed files with 92 additions and 113 deletions
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10
src/pcm/pcm_softvol.c
View file

@ -663,18 +663,18 @@ static int add_tlv_info(snd_pcm_softvol_t *svol, snd_ctl_elem_info_t *cinfo)
return snd_ctl_elem_tlv_write(svol->ctl, &cinfo->id, tlv);
}
static int add_user_ctl(snd_pcm_softvol_t *svol, snd_ctl_elem_info_t *cinfo, int count)
static int add_user_ctl(snd_pcm_softvol_t *svol, snd_ctl_elem_info_t *cinfo,
int count)
{
int err;
int i;
unsigned int def_val;
if (svol->max_val == 1)
err = snd_ctl_elem_add_boolean_set(svol->ctl, &cinfo->id, 1,
count);
err = snd_ctl_elem_add_boolean_set(svol->ctl, cinfo, 1, count);
else
err = snd_ctl_elem_add_integer_set(svol->ctl, &cinfo->id, 1,
count, 0, svol->max_val, 0);
err = snd_ctl_elem_add_integer_set(svol->ctl, cinfo, 1, count,
0, svol->max_val, 0);
if (err < 0)
return err;
if (svol->max_val == 1)