snd_pcm_channel_flush()
Flush all pending data in a PCM channel's queue and stop the channel
Synopsis:
#include <sys/asoundlib.h> int snd_pcm_channel_flush( snd_pcm_t *handle, int channel );
Arguments:
- handle
- The handle for the PCM device, which you must have opened by calling snd_pcm_open() or snd_pcm_open_preferred() .
- channel
- The channel; SND_PCM_CHANNEL_CAPTURE or SND_PCM_CHANNEL_PLAYBACK.
Library:
libasound.so
Use the -l asound option to qcc to link against this library.
Description:
The snd_pcm_plugin_flush() function flushes all unprocessed data in the driver queue by calling snd_pcm_capture_flush() or snd_pcm_playback_flush() , depending on the value of channel.
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 |