pcm_hw.c File Reference

PCM HW Plugin Interface. More...

Enumerations
enum	{ CHMAP_CTL_QUERY , CHMAP_CTL_GET , CHMAP_CTL_SET }

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.
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.
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.

Detailed Description

PCM HW Plugin Interface.

Author

Abramo Bagnara abram.nosp@m.o@al.nosp@m.sa-pr.nosp@m.ojec.nosp@m.t.org

Jaroslav Kysela perex.nosp@m.@per.nosp@m.ex.cz

Date

2000-2001

Function Documentation

snd_pcm_hw_open_fd()

int snd_pcm_hw_open_fd	(	snd_pcm_t **	pcmp,
		const char *	name,
		int	fd,
		int	sync_ptr_ioctl )

Creates a new hw PCM.

Parameters

pcmp	Returns created PCM handle
name	Name of PCM
fd	File descriptor
sync_ptr_ioctl	Boolean flag for sync_ptr ioctl

Return values

zero	on success otherwise a negative error code

Warning

Using of this function might be dangerous in the sense of compatibility reasons. The prototype might be freely changed in future.