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pcm_hw.c File Reference

PCM HW Plugin Interface. More...


Functions

int snd_pcm_hw_open_fd (snd_pcm_t **pcmp, const char *name, int fd, int mmap_emulation)
 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)
 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 <abramo@alsa-project.org> , Jaroslav Kysela <perex@suse.cz>
Date:
2000-2001

Function Documentation

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.

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

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
 

Creates a new hw PCM.

Parameters:
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
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.

int snd_pcm_hw_open_fd snd_pcm_t **    pcmp,
const char *    name,
int    fd,
int    mmap_emulation
 

Creates a new hw PCM.

Parameters:
pcmp  Returns created PCM handle
name  Name of PCM
fd  File descriptor
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.


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