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pcm_hooks.c File Reference

PCM Hook Interface. More...

Functions

int snd_pcm_hooks_open (snd_pcm_t **pcmp, const char *name, snd_pcm_t *slave, int close_slave)
 Creates a new hooks PCM.
int _snd_pcm_hooks_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 hooks PCM.
snd_pcm_tsnd_pcm_hook_get_pcm (snd_pcm_hook_t *hook)
 Get PCM handle for a PCM hook.
void * snd_pcm_hook_get_private (snd_pcm_hook_t *hook)
 Get callback function private data for a PCM hook.
void snd_pcm_hook_set_private (snd_pcm_hook_t *hook, void *private_data)
 Set callback function private data for a PCM hook.
int snd_pcm_hook_add (snd_pcm_hook_t **hookp, snd_pcm_t *pcm, snd_pcm_hook_type_t type, snd_pcm_hook_func_t func, void *private_data)
 Add a PCM hook at end of hooks chain.
int snd_pcm_hook_remove (snd_pcm_hook_t *hook)
 Remove a PCM hook.
int _snd_pcm_hook_ctl_elems_install (snd_pcm_t *pcm, snd_config_t *conf)
 Install CTL settings using hardware associated with PCM handle.

Detailed Description

PCM Hook Interface.

Author:
Abramo Bagnara abram.nosp@m.o@al.nosp@m.sa-pr.nosp@m.ojec.nosp@m.t.org
Jaroslav Kysela perex.nosp@m.@per.nosp@m.ex.cz
Date:
2000-2001

Function Documentation

int _snd_pcm_hook_ctl_elems_install ( snd_pcm_t pcm,
snd_config_t conf 
)

Install CTL settings using hardware associated with PCM handle.

Parameters:
pcmPCM handle
confConfiguration node with CTL settings
Returns:
zero on success otherwise a negative error code
int _snd_pcm_hooks_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 hooks PCM.

Parameters:
pcmpReturns created PCM handle
nameName of PCM
rootRoot configuration node
confConfiguration node with hooks PCM description
streamPCM Stream
modePCM Mode
Return values:
zeroon 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_hooks_open ( snd_pcm_t **  pcmp,
const char *  name,
snd_pcm_t slave,
int  close_slave 
)

Creates a new hooks PCM.

Parameters:
pcmpReturns created PCM handle
nameName of PCM
slaveSlave PCM
close_slaveIf set, slave PCM handle is closed when hooks PCM is closed
Return values:
zeroon 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.