snd_pcm_channel

Synopsis:

#include <sys/asoundlib.h>

int snd_pcm_channel_pause ( snd_pcm_t *pcm,
                            int channel );

Arguments:

pcm: 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().
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_channel_pause() function pauses a channel by calling snd_pcm_capture_pause() or snd_pcm_playback_pause(), depending on the value of channel.

Unlike draining or flushing, this preserves all data that has not yet been received or played out within the audio driver, to be retrieved or played out after resuming.

Returns:

EOK: Success.
-EINVAL: The handle is NULL.
-EIO: The channel isn't valid.

This function can return other negative errno values.

Classification:

QNX Neutrino

Safety:
Cancellation point	No
Interrupt handler	No
Signal handler	Yes
Thread	Yes