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PCM SUBDEVICE selection enhancements

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This commit is contained in:
Jaroslav Kysela 1999-08-22 13:34:31 +00:00
parent a234679700
commit 57631a012c
4 changed files with 83 additions and 15 deletions
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34
src/control/control.c
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@ -29,7 +29,7 @@
#include "asoundlib.h"
#define SND_FILE_CONTROL "/dev/snd/controlC%i"
#define SND_CTL_VERSION_MAX SND_PROTOCOL_VERSION(2, 0, 0)
#define SND_CTL_VERSION_MAX SND_PROTOCOL_VERSION(2, 0, 1)
struct snd_ctl {
int card;
@ -171,29 +171,33 @@ int snd_ctl_pcm_info(snd_ctl_t *handle, int dev, snd_pcm_info_t * info)
return 0;
}
int snd_ctl_pcm_playback_info(snd_ctl_t *handle, int dev, snd_pcm_playback_info_t * info)
int snd_ctl_pcm_playback_info(snd_ctl_t *handle, int dev, int subdev, snd_pcm_playback_info_t * info)
{
snd_ctl_t *ctl;
ctl = handle;
if (!ctl || !info || dev < 0)
if (!ctl || !info || dev < 0 || subdev < 0)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_SUBDEVICE, &subdev) < 0)
return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PLAYBACK_INFO, info) < 0)
return -errno;
return 0;
}
int snd_ctl_pcm_capture_info(snd_ctl_t *handle, int dev, snd_pcm_capture_info_t * info)
int snd_ctl_pcm_capture_info(snd_ctl_t *handle, int dev, int subdev, snd_pcm_capture_info_t * info)
{
snd_ctl_t *ctl;
ctl = handle;
if (!ctl || !info || dev < 0)
if (!ctl || !info || dev < 0 || subdev < 0)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_SUBDEVICE, &subdev) < 0)
return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_CAPTURE_INFO, info) < 0)
return -errno;
return 0;
@ -250,7 +254,7 @@ int snd_ctl_pcm_capture_switch_list(snd_ctl_t *handle, int dev, snd_switch_list_
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RSWITCH_LIST, list) < 0)
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_CSWITCH_LIST, list) < 0)
return -errno;
return 0;
}
@ -264,7 +268,7 @@ int snd_ctl_pcm_capture_switch_read(snd_ctl_t *handle, int dev, snd_switch_t * s
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RSWITCH_READ, sw) < 0)
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_CSWITCH_READ, sw) < 0)
return -errno;
return 0;
}
@ -278,7 +282,21 @@ int snd_ctl_pcm_capture_switch_write(snd_ctl_t *handle, int dev, snd_switch_t *
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RSWITCH_WRITE, sw) < 0)
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_CSWITCH_WRITE, sw) < 0)
return -errno;
return 0;
}
int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *handle, int dev, int subdev)
{
snd_ctl_t *ctl;
ctl = handle;
if (!ctl || dev < 0)
return -EINVAL;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
return -errno;
if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PREFER_SUBDEVICE, &subdev) < 0)
return -errno;
return 0;
}