pcm_softvol.c File Reference

PCM Soft Volume Plugin Interface. More...

Functions
int	snd_pcm_softvol_open (snd_pcm_t **pcmp, const char *name, snd_pcm_format_t sformat, int ctl_card, snd_ctl_elem_id_t *ctl_id, int cchannels, double min_dB, double max_dB, int resolution, snd_pcm_t *slave, int close_slave)
	Creates a new SoftVolume PCM.
int	_snd_pcm_softvol_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 Soft Volume PCM.

Detailed Description

PCM Soft Volume Plugin Interface.

Author

Takashi Iwai tiwai.nosp@m.@sus.nosp@m.e.de

Date

2004

Function Documentation

_snd_pcm_softvol_open()

int _snd_pcm_softvol_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 Soft Volume PCM.

Parameters

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

snd_pcm_softvol_open()

int snd_pcm_softvol_open	(	snd_pcm_t **	pcmp,
		const char *	name,
		snd_pcm_format_t	sformat,
		int	ctl_card,
		snd_ctl_elem_id_t *	ctl_id,
		int	cchannels,
		double	min_dB,
		double	max_dB,
		int	resolution,
		snd_pcm_t *	slave,
		int	close_slave )

Creates a new SoftVolume PCM.

Parameters

pcmp	Returns created PCM handle
name	Name of PCM
sformat	Slave format
ctl_card	card index of the control
ctl_id	The control element
cchannels	PCM channels
min_dB	minimal dB value
max_dB	maximal dB value
resolution	resolution of control
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.