Return the file descriptor of the connection to the PCM interface
#include <sys/asoundlib.h> int snd_pcm_file_descriptor( snd_pcm_t *handle, int channel );
libasound.so
The snd_pcm_file_descriptor() function returns the file descriptor of the connection to the PCM interface.
You can use this file descriptor for the select() synchronous multiplexer function (see the QNX Library Reference).
The file descriptor of the connection to the PCM interface on success, or a negative error code.
QNX Neutrino
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |
select() in the QNX Library Reference