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Added the surround plugin to allow simple access for 4.0 and 5.1 speakers.

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It needs a bit more work to make it functional.
This commit is contained in:
Jaroslav Kysela 2001-04-13 10:54:56 +00:00
parent edaf7fdf2c
commit c4f95f48c3
13 changed files with 549 additions and 2 deletions
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16
src/control/control_shm.c
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@ -249,6 +249,21 @@ static int snd_ctl_shm_pcm_next_device(snd_ctl_t *ctl, int * device)
return err;
}
static int snd_ctl_shm_pcm_surround_next_device(snd_ctl_t *ctl, snd_pcm_surround_type_t type, int * device)
{
snd_ctl_shm_t *shm = ctl->private_data;
volatile snd_ctl_shm_ctrl_t *ctrl = shm->ctrl;
int err;
ctrl->u.surround.type = type;
ctrl->u.surround.device = *device;
ctrl->cmd = SND_CTL_IOCTL_PCM_SURROUND_NEXT_DEVICE;
err = snd_ctl_shm_action(ctl);
if (err < 0)
return err;
*device = ctrl->u.device;
return err;
}
static int snd_ctl_shm_pcm_info(snd_ctl_t *ctl, snd_pcm_info_t * info)
{
snd_ctl_shm_t *shm = ctl->private_data;
@ -350,6 +365,7 @@ snd_ctl_ops_t snd_ctl_shm_ops = {
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,
pcm_surround_next_device: snd_ctl_shm_pcm_surround_next_device,
pcm_info: snd_ctl_shm_pcm_info,
pcm_prefer_subdevice: snd_ctl_shm_pcm_prefer_subdevice,
rawmidi_next_device: snd_ctl_shm_rawmidi_next_device,