/build/buildd/alsa-lib-1.0.25/src/pcm/pcm_rate.c File Reference

PCM Rate Plugin Interface. More...

Functions
const snd_config_t *	snd_pcm_rate_get_default_converter (snd_config_t *root)
	Get a default converter string.
int	snd_pcm_rate_open (snd_pcm_t **pcmp, const char *name, snd_pcm_format_t sformat, unsigned int srate, const snd_config_t *converter, snd_pcm_t *slave, int close_slave)
	Creates a new rate PCM.
int	_snd_pcm_rate_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 rate PCM.

---

Detailed Description

PCM Rate Plugin Interface.

Author:

Abramo Bagnara <abramo@alsa-project.org>

Jaroslav Kysela <perex@perex.cz>

Date:

2000-2004

---

Function Documentation

int _snd_pcm_rate_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 rate PCM.

Parameters:

pcmp	Returns created PCM handle
name	Name of PCM
root	Root configuration node
conf	Configuration node with rate 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.

const snd_config_t* snd_pcm_rate_get_default_converter

(

snd_config_t *

root

)

Get a default converter string.

Parameters:

root	Root configuration node

Return values:

A	const config item if found, or NULL

int snd_pcm_rate_open	(	snd_pcm_t **	pcmp,
		const char *	name,
		snd_pcm_format_t	sformat,
		unsigned int	srate,
		const snd_config_t *	converter,
		snd_pcm_t *	slave,
		int	close_slave
	)

Creates a new rate PCM.

Parameters:

pcmp	Returns created PCM handle
name	Name of PCM
sformat	Slave format
srate	Slave rate
converter	SRC type string node
slave	Slave PCM handle
close_slave	When set, the slave PCM handle is closed with copy PCM

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.