snd_pcm_channel_resume()

Resume a channel

Synopsis:

#include <sys/asoundlib.h>

int snd_pcm_channel_resume ( 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_resume() function resumes a channel by calling snd_pcm_capture_resume() or snd_pcm_playback_resume(), depending on the value of channel.

Returns:

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

Errors:

Additional information for common error values:
-EINVAL
The state of handle is invalid, an invalid channel was provided as input, or an invalid state change occurred. You can call snd_pcm_channel_status() to check if the state change was invalid.
-ENOTSUP
Resume isn't supported on the PCM device that's referenced by the PCM handle (pcm).
-EIO
The channel isn't valid that was passed in was not set to SND_PCM_CHANNEL_PLAYBACK or SND_PCM_CHANNEL_CAPTURE.

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 pcm (snd_pcm_t) is used across multiple threads.