pub unsafe fn alloc(
_sample_fmt: AVSampleFormat,
_channels: c_int,
_nb_samples: c_int,
) -> Result<*mut AVAudioFifo, AvError>pub unsafe fn alloc(
_sample_fmt: AVSampleFormat,
_channels: c_int,
_nb_samples: c_int,
) -> Result<*mut AVAudioFifo, AvError>