snd_pcm_playback_flush()
Play out all pending data in a PCM playback channel's queue and stop the channel
Synopsis:
#include <sys/asoundlib.h>
int snd_pcm_playback_flush( snd_pcm_t *handle);
Arguments:
- handle
- The handle for the PCM device, which you must have opened by calling snd_pcm_open() or snd_pcm_open_preferred() .
Library:
libasound.so
Use the -l asound option to qcc to link against this library.
Description:
The snd_pcm_playback_flush() function blocks until all unprocessed data in the driver queue has been played.
If the operation is successful (zero is returned), the channel's state is changed to SND_PCM_STATUS_READY and the channel is stopped.
This function isn't plugin-aware.
It functions exactly the same way as
snd_pcm_channel_flush(.., SND_PCM_CHANNEL_PLAYBACK).
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.
Returns:
Zero on success, or a negative error code.
Errors:
- -EBADFD
- The pcm device state isn't ready.
- -EINTR
- The driver isn't processing the data (Internal Error).
- -EINVAL
- Invalid handle.
- -EIO
- An invalid channel was specified, or the data wasn't all flushed.
Classification:
QNX Neutrino
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | Yes |
| Thread | Yes |