mirrors/alsa-lib
1
0
Fork 0
mirror of https://github.com/alsa-project/alsa-lib.git synced 2025-11-03 09:01:52 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

mixer: remove alloca() from simple_add1()

Browse source 
Both of alloca() and automatic variables keep storages on stack, while
the former generates more instructions than the latter. It's better to use
the latter if the size of storage is computable at pre-compile or compile
time; i.e. just for structures.

This commit obsolete usages of alloca() with automatic variables.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2016-07-15 09:23:31 +09:00 • committed by Takashi Iwai
parent 98194d5f98
commit c2a59624f1
1 changed files with 9 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

19
src/mixer/simple_none.c
View file

@ -1419,18 +1419,17 @@ static int simple_add1(snd_mixer_class_t *class, const char *name,
snd_mixer_selem_id_t *id;
int new = 0;
int err;
snd_ctl_elem_info_t *info;
snd_ctl_elem_info_t info = {0};
selem_none_t *simple;
const char *name1;
snd_ctl_elem_type_t ctype;
unsigned long values;
snd_ctl_elem_info_alloca(&info);
err = snd_hctl_elem_info(helem, info);
err = snd_hctl_elem_info(helem, &info);
if (err < 0)
return err;
ctype = snd_ctl_elem_info_get_type(info);
values = snd_ctl_elem_info_get_count(info);
ctype = snd_ctl_elem_info_get_type(&info);
values = snd_ctl_elem_info_get_count(&info);
switch (type) {
case CTL_SINGLE:
if (ctype == SND_CTL_ELEM_TYPE_ENUMERATED)
@ -1553,20 +1552,20 @@ static int simple_add1(snd_mixer_class_t *class, const char *name,
goto __error;
}
simple->ctls[type].elem = helem;
simple->ctls[type].type = snd_ctl_elem_info_get_type(info);
simple->ctls[type].inactive = snd_ctl_elem_info_is_inactive(info);
simple->ctls[type].type = snd_ctl_elem_info_get_type(&info);
simple->ctls[type].inactive = snd_ctl_elem_info_is_inactive(&info);
simple->ctls[type].values = values;
if ( (type == CTL_GLOBAL_ENUM) ||
(type == CTL_PLAYBACK_ENUM) ||
(type == CTL_CAPTURE_ENUM) ) {
simple->ctls[type].min = 0;
simple->ctls[type].max = snd_ctl_elem_info_get_items(info);
simple->ctls[type].max = snd_ctl_elem_info_get_items(&info);
} else {
if (ctype == SND_CTL_ELEM_TYPE_INTEGER) {
simple->ctls[type].min =
snd_ctl_elem_info_get_min(info);
snd_ctl_elem_info_get_min(&info);
simple->ctls[type].max =
snd_ctl_elem_info_get_max(info);
snd_ctl_elem_info_get_max(&info);
}
}
switch (type) {