snd_pcm_capture_pause()
Pause a channel that's capturing
Synopsis:
#include <sys/asoundlib.h>
int snd_pcm_capture_pause ( snd_pcm_t *pcm );
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().
Library:
libasound.so
Use the -l asound option with qcc to link against this library.
Description:
The snd_pcm_capture_pause() function pauses a channel that's capturing. Unlike dropping or draining, this preserves all data that has not yet been received within the audio driver, to be retrieved after resuming.
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, and invalid channel was provided isn't capturing, or an invalid state change occurred. You can call snd_pcm_channel_status() to check if the state change was invalid.
- -ENOTSUP
- Pause isn't supported on the PCM device that's referenced by the PCM handle (pcm).
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.
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