}
/* non blocking mode */
- if (!is_output)
- fcntl(audio_fd, F_SETFL, O_NONBLOCK);
+ if (!is_output) {
+ if (fcntl(audio_fd, F_SETFL, O_NONBLOCK) < 0) {
+ av_log(s1, AV_LOG_WARNING, "%s: Could not enable non block mode (%s)\n", audio_device, strerror(errno));
+ }
+ }
s->frame_size = AUDIO_BLOCK_SIZE;