Function ffmpeg::ffi::av_buffer_create

pub unsafe extern "C" fn av_buffer_create(
    data: *mut u8,
    size: usize,
    free: Option<unsafe extern "C" fn(opaque: *mut c_void, data: *mut u8)>,
    opaque: *mut c_void,
    flags: c_int
) -> *mut AVBufferRef