snd_pcm_plugin_src_max_frag()

Get the maximum possible fragment size (plugin-aware)

#include <sys/asoundlib.h>

int snd_pcm_plugin_src_max_frag ( snd_pcm_t *handle,
                                  unsigned int fragsize );

Arguments:

handle

The handle for the PCM device, which you must have opened by calling snd_pcm_open() or snd_pcm_open_preferred() .

fragsize

The fragment size.

Library:

libasound.so

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

Description:

The snd_pcm_plugin_src_max_frag() function returns the maximum possible fragment size when the system is using the SND_SRC_MODE_ACTUAL or SND_SRC_MODE_ASYNC mode. The fragment size is adjusted during playback, so this lets you preallocate the maximum buffer size.

Returns:

The maximum fragment size, or -EINVAL if any of the arguments were invalid.

Classification:

QNX Neutrino

Caveats:

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.