snd_pcm_plugin

Get the current configuration for the specified PCM channel (plugin aware)

Synopsis:

#include <sys/asoundlib.h>

int snd_pcm_plugin_setup( snd_pcm_t               *handle,
                          snd_pcm_channel_setup_t *setup );

Arguments:

handle: The handle for the PCM device, which you must have opened by calling snd_pcm_open_name(), snd_pcm_open(), or snd_pcm_open_preferred().
setup: A pointer to a snd_pcm_channel_setup_t structure that snd_pcm_plugin_setup() fills with information about the current configuration of the PCM channel.
Set the setup structure's channel member to specify the direction. All other members are read-only.

Library:

libasound.so

Use the -l asound option with qcc to link against this library.

Description:

The snd_pcm_plugin_setup() function fills the setup structure with information about the current configuration of the PCM channel selected by handle.

Returns:

EOK on success, a negative errno upon failure. The errno values are available in the errno.h file.

Errors:

-EINVAL: Invalid handle; data pointer is NULL; setup->mode isn't SND_PCM_MODE_BLOCK.

Classification:

QNX Neutrino

Safety:
Cancellation point	No
Interrupt handler	No
Signal handler	Yes
Thread	Read the Caveats

Caveats:

This function is not thread safe if handle (snd_pcm_t) is used across multiple threads.

This function is the plugin-aware version of snd_pcm_channel_setup() . It functions exactly the same way. However, make sure that you don't mix and match plugin- and nonplugin-aware functions in your application, or you may get undefined behavior and misleading results.