/usr/src/packages/BUILD/alsa-lib-1.0.25/src/pcm/pcm_multi.c File Reference

PCM Multi Streams to One Conversion Plugin Interface. More...

Functions

int snd_pcm_multi_open (snd_pcm_t **pcmp, const char *name, unsigned int slaves_count, unsigned int master_slave, snd_pcm_t **slaves_pcm, unsigned int *schannels_count, unsigned int channels_count, int *sidxs, unsigned int *schannels, int close_slaves)
 Creates a new Multi PCM.
int _snd_pcm_multi_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 Multi PCM.

Detailed Description

PCM Multi Streams to One Conversion Plugin Interface.

Author:
Abramo Bagnara <abramo@alsa-project.org>
Date:
2000-2001

Function Documentation

int _snd_pcm_multi_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 Multi PCM.

Parameters:
pcmp Returns created PCM handle
Parameters:
name Name of PCM
Parameters:
root Root configuration node
Parameters:
conf Configuration node with Multi PCM description
Parameters:
stream Stream type
Parameters:
mode Stream 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_multi_open ( snd_pcm_t **  pcmp,
const char *  name,
unsigned int  slaves_count,
unsigned int  master_slave,
snd_pcm_t **  slaves_pcm,
unsigned int *  schannels_count,
unsigned int  channels_count,
int *  sidxs,
unsigned int *  schannels,
int  close_slaves 
)

Creates a new Multi PCM.

Parameters:
pcmp Returns created PCM handle
Parameters:
name Name of PCM
Parameters:
slaves_count Count of slaves
Parameters:
master_slave Master slave number
Parameters:
slaves_pcm Array with slave PCMs
Parameters:
schannels_count Array with slave channel counts
Parameters:
channels_count Count of channels
Parameters:
sidxs Array with channels indexes to slaves
Parameters:
schannels Array with slave channels
Parameters:
close_slaves When set, the slave PCM handle is closed
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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