ALSA project - the C library reference
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PCM HW Plugin Interface. More...
Enumerations | |
enum | { SND_SEQ_EVFLG_RESULT, SND_SEQ_EVFLG_NOTE, SND_SEQ_EVFLG_CONTROL, SND_SEQ_EVFLG_QUEUE, SND_SEQ_EVFLG_SYSTEM, SND_SEQ_EVFLG_MESSAGE, SND_SEQ_EVFLG_CONNECTION, SND_SEQ_EVFLG_SAMPLE, SND_SEQ_EVFLG_USERS, SND_SEQ_EVFLG_INSTR, SND_SEQ_EVFLG_QUOTE, SND_SEQ_EVFLG_NONE, SND_SEQ_EVFLG_RAW, SND_SEQ_EVFLG_FIXED, SND_SEQ_EVFLG_VARIABLE, SND_SEQ_EVFLG_VARUSR, SND_PCM_EXTPLUG_HW_FORMAT, SND_PCM_EXTPLUG_HW_CHANNELS, SND_PCM_EXTPLUG_HW_PARAMS, SND_PCM_IOPLUG_HW_ACCESS = 0, SND_PCM_IOPLUG_HW_FORMAT, SND_PCM_IOPLUG_HW_CHANNELS, SND_PCM_IOPLUG_HW_RATE, SND_PCM_IOPLUG_HW_PERIOD_BYTES, SND_PCM_IOPLUG_HW_BUFFER_BYTES, SND_PCM_IOPLUG_HW_PERIODS, SND_PCM_IOPLUG_HW_PARAMS, CHMAP_CTL_QUERY, CHMAP_CTL_GET, CHMAP_CTL_SET, SNDRV_TIMER_IOCTL_START_OLD = _IO('T', 0x20), SNDRV_TIMER_IOCTL_STOP_OLD = _IO('T', 0x21), SNDRV_TIMER_IOCTL_CONTINUE_OLD = _IO('T', 0x22), SNDRV_TIMER_IOCTL_PAUSE_OLD = _IO('T', 0x23) } |
Functions | |
snd_pcm_chmap_query_t ** | snd_pcm_query_chmaps_from_hw (int card, int dev, int subdev, snd_pcm_stream_t stream) |
int | snd_pcm_hw_open_fd (snd_pcm_t **pcmp, const char *name, int fd, int sync_ptr_ioctl) |
Creates a new hw PCM. More... | |
int | snd_pcm_hw_open (snd_pcm_t **pcmp, const char *name, int card, int device, int subdevice, snd_pcm_stream_t stream, int mode, int mmap_emulation, int sync_ptr_ioctl) |
Creates a new hw PCM. More... | |
int | _snd_pcm_hw_open (snd_pcm_t **pcmp, const char *name, snd_config_t *root, snd_config_t *conf, snd_pcm_stream_t stream, int mode) |
Creates a new hw PCM. More... | |
PCM HW Plugin Interface.
anonymous enum |
int _snd_pcm_hw_open | ( | snd_pcm_t ** | pcmp, |
const char * | name, | ||
snd_config_t * | root, | ||
snd_config_t * | conf, | ||
snd_pcm_stream_t | stream, | ||
int | mode | ||
) |
Creates a new hw PCM.
pcmp | Returns created PCM handle |
name | Name of PCM |
root | Root configuration node |
conf | Configuration node with hw PCM description |
stream | PCM Stream |
mode | PCM Mode |
int snd_pcm_hw_open | ( | snd_pcm_t ** | pcmp, |
const char * | name, | ||
int | card, | ||
int | device, | ||
int | subdevice, | ||
snd_pcm_stream_t | stream, | ||
int | mode, | ||
int | mmap_emulation, | ||
int | sync_ptr_ioctl | ||
) |
Creates a new hw PCM.
pcmp | Returns created PCM handle |
name | Name of PCM |
card | Number of card |
device | Number of device |
subdevice | Number of subdevice |
stream | PCM Stream |
mode | PCM Mode |
mmap_emulation | Obsoleted parameter |
sync_ptr_ioctl | Use SYNC_PTR ioctl rather than mmap for control structures |
zero | on success otherwise a negative error code |
int snd_pcm_hw_open_fd | ( | snd_pcm_t ** | pcmp, |
const char * | name, | ||
int | fd, | ||
int | sync_ptr_ioctl | ||
) |
Creates a new hw PCM.
pcmp | Returns created PCM handle |
name | Name of PCM |
fd | File descriptor |
sync_ptr_ioctl | Boolean flag for sync_ptr ioctl |
zero | on success otherwise a negative error code |