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use std::os::raw::c_void;
use std::rc::Rc;
use crate::mainloop::api::{MainloopApi, MainloopInnerType};
use crate::callbacks::MultiUseCallback;
pub use capi::pa_io_event as IoEventInternal;
pub type IoEventFlagSet = capi::mainloop::pa_io_event_flags_t;
pub mod flags {
use capi;
use super::IoEventFlagSet;
pub const NULL: IoEventFlagSet = capi::PA_IO_EVENT_NULL;
pub const INPUT: IoEventFlagSet = capi::PA_IO_EVENT_INPUT;
pub const OUTPUT: IoEventFlagSet = capi::PA_IO_EVENT_OUTPUT;
pub const HANGUP: IoEventFlagSet = capi::PA_IO_EVENT_HANGUP;
pub const ERROR: IoEventFlagSet = capi::PA_IO_EVENT_ERROR;
}
pub struct IoEvent<T>
where T: MainloopInnerType
{
ptr: *mut IoEventInternal,
owner: Rc<T>,
_saved_cb: EventCb,
}
pub struct IoEventRef<T: 'static>
where T: MainloopInnerType
{
ptr: *mut IoEventInternal,
owner: Rc<T>,
}
pub(crate) type EventCb = MultiUseCallback<dyn FnMut(*mut IoEventInternal, i32, IoEventFlagSet),
extern "C" fn(a: *const MainloopApi, e: *mut IoEventInternal, fd: i32, events: IoEventFlagSet,
userdata: *mut c_void)>;
impl<T> IoEvent<T>
where T: MainloopInnerType
{
#[inline]
pub(crate) fn from_raw(ptr: *mut IoEventInternal, mainloop_inner: Rc<T>, callback: EventCb)
-> Self
{
assert_eq!(false, ptr.is_null());
Self { ptr: ptr, owner: mainloop_inner, _saved_cb: callback }
}
#[inline]
pub fn enable(&mut self, events: IoEventFlagSet) {
let fn_ptr = (*self.owner).get_api().io_enable.unwrap();
fn_ptr(self.ptr, events);
}
}
impl<T> IoEventRef<T>
where T: MainloopInnerType
{
#[inline]
pub(crate) fn from_raw(ptr: *mut IoEventInternal, mainloop_inner: Rc<T>) -> Self {
assert_eq!(false, ptr.is_null());
Self { ptr: ptr, owner: mainloop_inner }
}
#[inline]
pub fn enable(&mut self, events: IoEventFlagSet) {
let fn_ptr = (*self.owner).get_api().io_enable.unwrap();
fn_ptr(self.ptr, events);
}
}
impl<T> Drop for IoEvent<T>
where T: MainloopInnerType
{
fn drop(&mut self) {
let fn_ptr = (*self.owner).get_api().io_free.unwrap();
fn_ptr(self.ptr);
}
}
pub(crate)
extern "C"
fn event_cb_proxy(_: *const MainloopApi, e: *mut IoEventInternal, fd: i32, events: IoEventFlagSet,
userdata: *mut c_void)
{
let _ = std::panic::catch_unwind(|| {
let callback = EventCb::get_callback(userdata);
(callback)(e, fd, events);
});
}