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Completed control and mixer API

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This commit is contained in:
Abramo Bagnara 2001-02-09 11:20:31 +00:00
parent c709b0a627
commit fea0c73cdb
23 changed files with 1988 additions and 1251 deletions
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70
src/control/control_shm.c
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@ -94,6 +94,23 @@ static int snd_ctl_shm_close(snd_ctl_t *ctl)
return result;
}
static int snd_ctl_shm_nonblock(snd_ctl_t *handle ATTRIBUTE_UNUSED, int nonblock ATTRIBUTE_UNUSED)
{
return 0;
}
static int snd_ctl_shm_async(snd_ctl_t *ctl, int sig, pid_t pid)
{
snd_ctl_shm_t *shm = ctl->private;
volatile snd_ctl_shm_ctrl_t *ctrl = shm->ctrl;
ctrl->cmd = SND_CTL_IOCTL_ASYNC;
ctrl->u.async.sig = sig;
if (pid == 0)
pid = getpid();
ctrl->u.async.pid = pid;
return snd_ctl_shm_action(ctl);
}
static int snd_ctl_shm_poll_descriptor(snd_ctl_t *ctl)
{
snd_ctl_shm_t *shm = ctl->private;
@ -120,67 +137,67 @@ static int snd_ctl_shm_hw_info(snd_ctl_t *ctl, snd_ctl_card_info_t *info)
return err;
}
static int snd_ctl_shm_clist(snd_ctl_t *ctl, snd_ctl_element_list_t *list)
static int snd_ctl_shm_elem_list(snd_ctl_t *ctl, snd_ctl_elem_list_t *list)
{
snd_ctl_shm_t *shm = ctl->private;
volatile snd_ctl_shm_ctrl_t *ctrl = shm->ctrl;
size_t maxsize = CTL_SHM_DATA_MAXLEN;
size_t bytes = list->space * sizeof(*list->pids);
int err;
snd_ctl_element_id_t *pids = list->pids;
snd_ctl_elem_id_t *pids = list->pids;
if (bytes > maxsize)
return -EINVAL;
ctrl->u.clist = *list;
ctrl->cmd = SNDRV_CTL_IOCTL_ELEMENT_LIST;
ctrl->u.element_list = *list;
ctrl->cmd = SNDRV_CTL_IOCTL_ELEM_LIST;
err = snd_ctl_shm_action(ctl);
if (err < 0)
return err;
*list = ctrl->u.clist;
*list = ctrl->u.element_list;
list->pids = pids;
bytes = list->used * sizeof(*list->pids);
memcpy(pids, (void *)ctrl->data, bytes);
return err;
}
static int snd_ctl_shm_cinfo(snd_ctl_t *ctl, snd_ctl_element_info_t *info)
static int snd_ctl_shm_elem_info(snd_ctl_t *ctl, snd_ctl_elem_info_t *info)
{
snd_ctl_shm_t *shm = ctl->private;
volatile snd_ctl_shm_ctrl_t *ctrl = shm->ctrl;
int err;
ctrl->u.cinfo = *info;
ctrl->cmd = SNDRV_CTL_IOCTL_ELEMENT_INFO;
ctrl->u.element_info = *info;
ctrl->cmd = SNDRV_CTL_IOCTL_ELEM_INFO;
err = snd_ctl_shm_action(ctl);
if (err < 0)
return err;
*info = ctrl->u.cinfo;
*info = ctrl->u.element_info;
return err;
}
static int snd_ctl_shm_cread(snd_ctl_t *ctl, snd_ctl_element_t *control)
static int snd_ctl_shm_elem_read(snd_ctl_t *ctl, snd_ctl_elem_t *control)
{
snd_ctl_shm_t *shm = ctl->private;
volatile snd_ctl_shm_ctrl_t *ctrl = shm->ctrl;
int err;
ctrl->u.cread = *control;
ctrl->cmd = SNDRV_CTL_IOCTL_ELEMENT_READ;
ctrl->u.element_read = *control;
ctrl->cmd = SNDRV_CTL_IOCTL_ELEM_READ;
err = snd_ctl_shm_action(ctl);
if (err < 0)
return err;
*control = ctrl->u.cread;
*control = ctrl->u.element_read;
return err;
}
static int snd_ctl_shm_cwrite(snd_ctl_t *ctl, snd_ctl_element_t *control)
static int snd_ctl_shm_elem_write(snd_ctl_t *ctl, snd_ctl_elem_t *control)
{
snd_ctl_shm_t *shm = ctl->private;
volatile snd_ctl_shm_ctrl_t *ctrl = shm->ctrl;
int err;
ctrl->u.cwrite = *control;
ctrl->cmd = SNDRV_CTL_IOCTL_ELEMENT_WRITE;
ctrl->u.element_write = *control;
ctrl->cmd = SNDRV_CTL_IOCTL_ELEM_WRITE;
err = snd_ctl_shm_action(ctl);
if (err < 0)
return err;
*control = ctrl->u.cwrite;
*control = ctrl->u.element_write;
return err;
}
@ -296,9 +313,14 @@ static int snd_ctl_shm_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev)
static int snd_ctl_shm_read(snd_ctl_t *ctl, snd_ctl_event_t *event)
{
snd_ctl_shm_t *shm = ctl->private;
volatile snd_ctl_shm_ctrl_t *ctrl = shm->ctrl;
snd_ctl_shm_t *shm;
volatile snd_ctl_shm_ctrl_t *ctrl;
int err;
err = snd_ctl_wait(ctl, -1);
if (err < 0)
return 0;
shm = ctl->private;
ctrl = shm->ctrl;
ctrl->u.read = *event;
ctrl->cmd = SND_CTL_IOCTL_READ;
err = snd_ctl_shm_action(ctl);
@ -310,12 +332,14 @@ static int snd_ctl_shm_read(snd_ctl_t *ctl, snd_ctl_event_t *event)
snd_ctl_ops_t snd_ctl_shm_ops = {
close: snd_ctl_shm_close,
nonblock: snd_ctl_shm_nonblock,
async: snd_ctl_shm_async,
poll_descriptor: snd_ctl_shm_poll_descriptor,
hw_info: snd_ctl_shm_hw_info,
clist: snd_ctl_shm_clist,
cinfo: snd_ctl_shm_cinfo,
cread: snd_ctl_shm_cread,
cwrite: snd_ctl_shm_cwrite,
element_list: snd_ctl_shm_elem_list,
element_info: snd_ctl_shm_elem_info,
element_read: snd_ctl_shm_elem_read,
element_write: snd_ctl_shm_elem_write,
hwdep_next_device: snd_ctl_shm_hwdep_next_device,
hwdep_info: snd_ctl_shm_hwdep_info,
pcm_next_device: snd_ctl_shm_pcm_next_device,