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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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13
src/control/control.c
View file

@ -265,6 +265,19 @@ int snd_ctl_pcm_next_device(snd_ctl_t *ctl, int * device)
return ctl->ops->pcm_next_device(ctl, device);
}
/**
* \brief Get next PCM surround device number
* \param ctl CTL handle
* \param type surround type
* \param device current device on entry and next device on return
* \return 0 on success otherwise a negative error code
*/
int snd_ctl_pcm_surround_next_device(snd_ctl_t *ctl, snd_pcm_surround_type_t type, int * device)
{
assert(ctl && device);
return ctl->ops->pcm_surround_next_device(ctl, type, device);
}
/**
* \brief Get info about a PCM device
* \param ctl CTL handle

7
src/control/control_hw.c
View file

@ -187,6 +187,12 @@ static int snd_ctl_hw_pcm_next_device(snd_ctl_t *handle, int * device)
return 0;
}
static int snd_ctl_hw_pcm_surround_next_device(snd_ctl_t *handle, snd_pcm_surround_type_t type, int * device)
{
snd_ctl_hw_t *hw = handle->private_data;
return 0;
}
static int snd_ctl_hw_pcm_info(snd_ctl_t *handle, snd_pcm_info_t * info)
{
snd_ctl_hw_t *hw = handle->private_data;
@ -251,6 +257,7 @@ snd_ctl_ops_t snd_ctl_hw_ops = {
hwdep_next_device: snd_ctl_hw_hwdep_next_device,
hwdep_info: snd_ctl_hw_hwdep_info,
pcm_next_device: snd_ctl_hw_pcm_next_device,
pcm_surround_next_device: snd_ctl_hw_pcm_surround_next_device,
pcm_info: snd_ctl_hw_pcm_info,
pcm_prefer_subdevice: snd_ctl_hw_pcm_prefer_subdevice,
rawmidi_next_device: snd_ctl_hw_rawmidi_next_device,

1
src/control/control_local.h
View file

@ -36,6 +36,7 @@ typedef struct _snd_ctl_ops {
int (*hwdep_next_device)(snd_ctl_t *handle, int *device);
int (*hwdep_info)(snd_ctl_t *handle, snd_hwdep_info_t * info);
int (*pcm_next_device)(snd_ctl_t *handle, int *device);
int (*pcm_surround_next_device)(snd_ctl_t *handle, snd_pcm_surround_type_t type, int *device);
int (*pcm_info)(snd_ctl_t *handle, snd_pcm_info_t * info);
int (*pcm_prefer_subdevice)(snd_ctl_t *handle, int subdev);
int (*rawmidi_next_device)(snd_ctl_t *handle, int *device);

16
src/control/control_shm.c
View file

@ -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,