Commit 64f8b8c0 authored by Sebastian Dröge's avatar Sebastian Dröge 🍵

Add missing manual Bus bindings

parent 796e37b4
// Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.com>
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::cell::RefCell;
use std::mem::transmute;
use ffi;
use glib;
use glib::translate::*;
use glib::source::{Continue, CallbackGuard, SourceId, Priority};
use glib_ffi;
use glib_ffi::{gboolean, gpointer};
use Bus;
use BusSyncReply;
use Message;
unsafe extern "C" fn trampoline_watch(
bus: *mut ffi::GstBus,
msg: *mut ffi::GstMessage,
func: gpointer,
) -> gboolean {
let _guard = CallbackGuard::new();
let func: &RefCell<Box<FnMut(&Bus, &Message) -> Continue + 'static>> = transmute(func);
(&mut *func.borrow_mut())(&from_glib_none(bus), &Message::from_glib_none(msg)).to_glib()
}
unsafe extern "C" fn destroy_closure_watch(ptr: gpointer) {
let _guard = CallbackGuard::new();
Box::<RefCell<Box<FnMut(&Bus, &Message) -> Continue + 'static>>>::from_raw(ptr as *mut _);
}
fn into_raw_watch<F: FnMut(&Bus, &Message) -> Continue + Send + 'static>(func: F) -> gpointer {
let func: Box<RefCell<Box<FnMut(&Bus, &Message) -> Continue + Send + 'static>>> =
Box::new(RefCell::new(Box::new(func)));
Box::into_raw(func) as gpointer
}
unsafe extern "C" fn trampoline_sync(
bus: *mut ffi::GstBus,
msg: *mut ffi::GstMessage,
func: gpointer,
) -> ffi::GstBusSyncReply {
let _guard = CallbackGuard::new();
let func: &RefCell<Box<FnMut(&Bus, &Message) -> BusSyncReply + 'static>> = transmute(func);
(&mut *func.borrow_mut())(&from_glib_none(bus), &Message::from_glib_none(msg)).to_glib()
}
unsafe extern "C" fn destroy_closure_sync(ptr: gpointer) {
let _guard = CallbackGuard::new();
Box::<RefCell<Box<FnMut(&Bus, &Message) -> BusSyncReply + 'static>>>::from_raw(ptr as *mut _);
}
fn into_raw_sync<F: FnMut(&Bus, &Message) -> BusSyncReply + Send + 'static>(func: F) -> gpointer {
let func: Box<RefCell<Box<FnMut(&Bus, &Message) -> BusSyncReply + Send + 'static>>> =
Box::new(RefCell::new(Box::new(func)));
Box::into_raw(func) as gpointer
}
impl Bus {
pub fn create_watch<'a, N: Into<Option<&'a str>>, F>(
&self,
name: N,
priority: Priority,
func: F,
) -> Option<glib::Source>
where
F: FnMut(&Bus, &Message) -> Continue + Send + 'static,
{
unsafe {
let source = ffi::gst_bus_create_watch(self.to_glib_none().0);
let trampoline = trampoline_watch as gpointer;
glib_ffi::g_source_set_callback(
source,
Some(transmute(trampoline)),
into_raw_watch(func),
Some(destroy_closure_watch),
);
glib_ffi::g_source_set_priority(source, priority.to_glib());
let name = name.into();
if let Some(name) = name {
glib_ffi::g_source_set_name(source, name.to_glib_none().0);
}
from_glib_full(source)
}
}
pub fn add_watch<F>(&self, func: F) -> SourceId
where
F: FnMut(&Bus, &Message) -> Continue + Send + 'static,
{
unsafe {
from_glib(ffi::gst_bus_add_watch_full(
self.to_glib_none().0,
glib_ffi::G_PRIORITY_DEFAULT,
Some(trampoline_watch),
into_raw_watch(func),
Some(destroy_closure_watch),
))
}
}
pub fn set_sync_handler<F>(&self, func: F)
where
F: FnMut(&Bus, &Message) -> BusSyncReply + Send + 'static,
{
unsafe {
ffi::gst_bus_set_sync_handler(
self.to_glib_none().0,
Some(trampoline_sync),
into_raw_sync(func),
Some(destroy_closure_sync),
)
}
}
}
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