Function swr_alloc_set_opts2 

pub unsafe fn swr_alloc_set_opts2(
    _ps: *mut *mut SwrContext,
    _out_ch_layout: *const AVChannelLayout,
    _out_sample_fmt: AVSampleFormat,
    _out_sample_rate: c_int,
    _in_ch_layout: *const AVChannelLayout,
    _in_sample_fmt: AVSampleFormat,
    _in_sample_rate: c_int,
    _log_offset: c_int,
    _log_ctx: *mut c_void,
) -> c_int