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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. More...

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. More...


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
name  Name of PCM
root  Root configuration node
conf  Configuration node with Multi PCM description
stream  Stream type
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
name  Name of PCM
slaves_count  Count of slaves
master_slave  Master slave number
slaves_pcm  Array with slave PCMs
schannels_count  Array with slave channel counts
channels_count  Count of channels
sidxs  Array with channels indexes to slaves
schannels  Array with slave channels
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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