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 );
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 Neutrino C Library Reference).
The file descriptor of the connection to the PCM interface on success, or a negative error code. The errno values are available in the errno.h file.
QNX Neutrino
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Read the Caveats |
This function is not thread safe if handle (snd_pcm_t) is used across multiple threads.