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/AliOS-Things-master/components/SDL2/src/audio/dsp/
A DSDL_dspaudio.c113 long ctlflags; in DSP_OpenDevice() local
114 ctlflags = fcntl(this->hidden->audio_fd, F_GETFL); in DSP_OpenDevice()
115 ctlflags &= ~O_NONBLOCK; in DSP_OpenDevice()
116 if (fcntl(this->hidden->audio_fd, F_SETFL, ctlflags) < 0) { in DSP_OpenDevice()

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