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use std::mem;
use std::ptr;
use glib_ffi;
use gobject_ffi;
use gst_ffi;
use glib;
use glib::translate::*;
use gst;
use gst::prelude::*;
use gobject_subclass::anyimpl::*;
use gobject_subclass::object::*;
use element::*;
use object::*;
pub trait BinImpl<T: BinBase>:
AnyImpl + ObjectImpl<T> + ElementImpl<T> + Send + Sync + 'static
where
T::InstanceStructType: PanicPoison,
{
fn add_element(&self, bin: &T, element: &gst::Element) -> bool {
bin.parent_add_element(element)
}
fn remove_element(&self, bin: &T, element: &gst::Element) -> bool {
bin.parent_remove_element(element)
}
fn handle_message(&self, bin: &T, message: gst::Message) {
bin.parent_handle_message(message)
}
}
any_impl!(BinBase, BinImpl, PanicPoison);
pub unsafe trait BinBase: IsA<gst::Element> + IsA<gst::Bin> + ObjectType {
fn parent_add_element(&self, element: &gst::Element) -> bool {
unsafe {
let klass = self.get_class();
let parent_klass = (*klass).get_parent_class() as *const gst_ffi::GstBinClass;
(*parent_klass)
.add_element
.map(|f| from_glib(f(self.to_glib_none().0, element.to_glib_none().0)))
.unwrap_or(false)
}
}
fn parent_remove_element(&self, element: &gst::Element) -> bool {
unsafe {
let klass = self.get_class();
let parent_klass = (*klass).get_parent_class() as *const gst_ffi::GstBinClass;
(*parent_klass)
.remove_element
.map(|f| from_glib(f(self.to_glib_none().0, element.to_glib_none().0)))
.unwrap_or(false)
}
}
fn parent_handle_message(&self, message: gst::Message) {
unsafe {
let klass = self.get_class();
let parent_klass = (*klass).get_parent_class() as *const gst_ffi::GstBinClass;
(*parent_klass)
.handle_message
.map(move |f| f(self.to_glib_none().0, message.into_ptr()));
}
}
}
pub unsafe trait BinClassExt<T: BinBase>
where
T::ImplType: BinImpl<T>,
T::InstanceStructType: PanicPoison,
{
fn override_vfuncs(&mut self, _: &ClassInitToken) {
unsafe {
let klass = &mut *(self as *const Self as *mut gst_ffi::GstBinClass);
klass.add_element = Some(bin_add_element::<T>);
klass.remove_element = Some(bin_remove_element::<T>);
klass.handle_message = Some(bin_handle_message::<T>);
}
}
}
glib_wrapper! {
pub struct Bin(Object<ElementInstanceStruct<Bin>>):
[gst::Bin => gst_ffi::GstBin,
gst::Element => gst_ffi::GstElement,
gst::Object => gst_ffi::GstObject,
gst::ChildProxy => gst_ffi::GstChildProxy];
match fn {
get_type => || get_type::<Bin>(),
}
}
unsafe impl<T: IsA<gst::Element> + IsA<gst::Bin> + ObjectType> BinBase for T {}
pub type BinClass = ClassStruct<Bin>;
unsafe impl BinClassExt<Bin> for BinClass {}
unsafe impl ElementClassExt<Bin> for BinClass {}
unsafe impl ObjectClassExt<Bin> for BinClass {}
unsafe impl Send for Bin {}
unsafe impl Sync for Bin {}
#[macro_export]
macro_rules! box_bin_impl(
($name:ident) => {
box_element_impl!($name);
impl<T: BinBase> BinImpl<T> for Box<$name<T>>
where
T::InstanceStructType: PanicPoison
{
fn add_element(&self, bin: &T, element: &gst::Element) -> bool {
let imp: &$name<T> = self.as_ref();
imp.add_element(bin, element)
}
fn remove_element(&self, bin: &T, element: &gst::Element) -> bool {
let imp: &$name<T> = self.as_ref();
imp.remove_element(bin, element)
}
fn handle_message(&self, bin: &T, message: gst::Message) {
let imp: &$name<T> = self.as_ref();
imp.handle_message(bin, message)
}
}
};
);
box_bin_impl!(BinImpl);
impl ObjectType for Bin {
const NAME: &'static str = "RsBin";
type ParentType = gst::Bin;
type ImplType = Box<BinImpl<Self>>;
type InstanceStructType = ElementInstanceStruct<Self>;
fn class_init(token: &ClassInitToken, klass: &mut BinClass) {
ElementClassExt::override_vfuncs(klass, token);
BinClassExt::override_vfuncs(klass, token);
}
object_type_fns!();
}
unsafe extern "C" fn bin_add_element<T: BinBase>(
ptr: *mut gst_ffi::GstBin,
element: *mut gst_ffi::GstElement,
) -> glib_ffi::gboolean
where
T::ImplType: BinImpl<T>,
T::InstanceStructType: PanicPoison,
{
floating_reference_guard!(ptr);
let bin = &*(ptr as *mut T::InstanceStructType);
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
let imp = bin.get_impl();
panic_to_error!(&wrap, &bin.panicked(), false, {
imp.add_element(&wrap, &from_glib_borrow(element))
}).to_glib()
}
unsafe extern "C" fn bin_remove_element<T: BinBase>(
ptr: *mut gst_ffi::GstBin,
element: *mut gst_ffi::GstElement,
) -> glib_ffi::gboolean
where
T::ImplType: BinImpl<T>,
T::InstanceStructType: PanicPoison,
{
floating_reference_guard!(ptr);
let bin = &*(ptr as *mut T::InstanceStructType);
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
let imp = bin.get_impl();
panic_to_error!(&wrap, &bin.panicked(), false, {
imp.remove_element(&wrap, &from_glib_borrow(element))
}).to_glib()
}
unsafe extern "C" fn bin_handle_message<T: BinBase>(
ptr: *mut gst_ffi::GstBin,
message: *mut gst_ffi::GstMessage,
) where
T::ImplType: BinImpl<T>,
T::InstanceStructType: PanicPoison,
{
floating_reference_guard!(ptr);
let bin = &*(ptr as *mut T::InstanceStructType);
let wrap: T = from_glib_borrow(ptr as *mut T::InstanceStructType);
let imp = bin.get_impl();
panic_to_error!(&wrap, &bin.panicked(), (), {
imp.handle_message(&wrap, from_glib_full(message))
});
}