Port BaseSink subclassing

Gir_GstBase.toml

@@ -16,7 +16,6 @@ external_libraries = [
 ]
 
 generate = [
-    "GstBase.BaseSink",
     "GstBase.BaseTransform",
     "GstBase.PushSrc",
 ]
@@ -73,6 +72,11 @@ status = "manual"
 trait = false
 concurrency = "none"
 
+[[object]]
+name = "GstBase.BaseSink"
+subclassing = true
+status = "generate"
+
 [[object]]
 name = "GstBase.BaseSrc"
 subclassing = true

gstreamer-base/src/auto/base_sink.rs

@@ -2,6 +2,7 @@
 // from gir-files (https://github.com/gtk-rs/gir-files)
 // DO NOT EDIT
 
+use BaseSinkClass;
 use ffi;
 use glib;
 use glib::StaticType;
@@ -21,7 +22,7 @@ use std::mem::transmute;
 use std::ptr;
 
 glib_wrapper! {
-    pub struct BaseSink(Object<ffi::GstBaseSink, ffi::GstBaseSinkClass>): [
+    pub struct BaseSink(Object<ffi::GstBaseSink, ffi::GstBaseSinkClass, BaseSinkClass>): [
         gst::Element => gst_ffi::GstElement,
         gst::Object => gst_ffi::GstObject,
     ];

gstreamer-base/src/base_sink.rs

@@ -8,8 +8,9 @@
 
 use ffi;
 use glib::translate::*;
-use glib::IsA;
+use glib::{IsA, IsClassFor};
 use gst;
+use std::ops;
 use BaseSink;
 
 pub trait BaseSinkExtManual {
@@ -26,3 +27,27 @@ impl<O: IsA<BaseSink>> BaseSinkExtManual for O {
         }
     }
 }
+
+#[repr(C)]
+pub struct BaseSinkClass(ffi::GstBaseSinkClass);
+
+unsafe impl IsClassFor for BaseSinkClass {
+    type Instance = BaseSink;
+}
+
+unsafe impl Send for BaseSinkClass {}
+unsafe impl Sync for BaseSinkClass {}
+
+impl ops::Deref for BaseSinkClass {
+    type Target = gst::ElementClass;
+
+    fn deref(&self) -> &Self::Target {
+        self.upcast_ref()
+    }
+}
+
+impl ops::DerefMut for BaseSinkClass {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        self.upcast_ref_mut()
+    }
+}

gstreamer-base/src/lib.rs

@@ -46,6 +46,7 @@ mod aggregator;
 #[cfg(any(feature = "v1_14", feature = "dox"))]
 mod aggregator_pad;
 mod base_sink;
+pub use base_sink::BaseSinkClass;
 mod base_src;
 pub use base_src::BaseSrcClass;
 mod base_transform;

gstreamer-base/src/subclass/base_sink.rs

@@ -0,0 +1,427 @@
+// Copyright (C) 2017,2018 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 ffi;
+use glib_ffi;
+use gst_ffi;
+
+use glib::translate::*;
+use prelude::*;
+
+use glib::subclass::prelude::*;
+use gst;
+use gst::subclass::prelude::*;
+
+use std::ptr;
+
+use BaseSink;
+use BaseSinkClass;
+
+pub trait BaseSinkImpl: ElementImpl + Send + Sync + 'static {
+    fn start(&self, _element: &BaseSink) -> bool {
+        true
+    }
+
+    fn stop(&self, _element: &BaseSink) -> bool {
+        true
+    }
+
+    fn render(&self, element: &BaseSink, buffer: &gst::BufferRef) -> gst::FlowReturn;
+
+    fn prepare(&self, _element: &BaseSink, _buffer: &gst::BufferRef) -> gst::FlowReturn {
+        gst::FlowReturn::Ok
+    }
+
+    fn render_list(&self, element: &BaseSink, list: &gst::BufferListRef) -> gst::FlowReturn {
+        for buffer in list.iter() {
+            let ret = self.render(element, buffer);
+            if ret != gst::FlowReturn::Ok {
+                return ret;
+            }
+        }
+
+        gst::FlowReturn::Ok
+    }
+
+    fn prepare_list(&self, element: &BaseSink, list: &gst::BufferListRef) -> gst::FlowReturn {
+        for buffer in list.iter() {
+            let ret = self.prepare(element, buffer);
+            if ret != gst::FlowReturn::Ok {
+                return ret;
+            }
+        }
+
+        gst::FlowReturn::Ok
+    }
+
+    fn query(&self, element: &BaseSink, query: &mut gst::QueryRef) -> bool {
+        BaseSinkImpl::parent_query(self, element, query)
+    }
+
+    fn event(&self, element: &BaseSink, event: gst::Event) -> bool {
+        self.parent_event(element, event)
+    }
+
+    fn get_caps(&self, element: &BaseSink, filter: Option<&gst::CapsRef>) -> Option<gst::Caps> {
+        self.parent_get_caps(element, filter)
+    }
+
+    fn set_caps(&self, element: &BaseSink, caps: &gst::CapsRef) -> bool {
+        self.parent_set_caps(element, caps)
+    }
+
+    fn fixate(&self, element: &BaseSink, caps: gst::Caps) -> gst::Caps {
+        self.parent_fixate(element, caps)
+    }
+
+    fn unlock(&self, _element: &BaseSink) -> bool {
+        true
+    }
+
+    fn unlock_stop(&self, _element: &BaseSink) -> bool {
+        true
+    }
+
+    fn parent_query(&self, element: &BaseSink, query: &mut gst::QueryRef) -> bool {
+        unsafe {
+            let data = self.get_type_data();
+            let parent_class = data.as_ref().get_parent_class() as *mut ffi::GstBaseSinkClass;
+            (*parent_class)
+                .query
+                .map(|f| from_glib(f(element.to_glib_none().0, query.as_mut_ptr())))
+                .unwrap_or(false)
+        }
+    }
+
+    fn parent_event(&self, element: &BaseSink, event: gst::Event) -> bool {
+        unsafe {
+            let data = self.get_type_data();
+            let parent_class = data.as_ref().get_parent_class() as *mut ffi::GstBaseSinkClass;
+            (*parent_class)
+                .event
+                .map(|f| from_glib(f(element.to_glib_none().0, event.into_ptr())))
+                .unwrap_or(false)
+        }
+    }
+
+    fn parent_get_caps(
+        &self,
+        element: &BaseSink,
+        filter: Option<&gst::CapsRef>,
+    ) -> Option<gst::Caps> {
+        unsafe {
+            let data = self.get_type_data();
+            let parent_class = data.as_ref().get_parent_class() as *mut ffi::GstBaseSinkClass;
+            let filter_ptr = if let Some(filter) = filter {
+                filter.as_mut_ptr()
+            } else {
+                ptr::null_mut()
+            };
+
+            (*parent_class)
+                .get_caps
+                .map(|f| from_glib_full(f(element.to_glib_none().0, filter_ptr)))
+                .unwrap_or(None)
+        }
+    }
+
+    fn parent_set_caps(&self, element: &BaseSink, caps: &gst::CapsRef) -> bool {
+        unsafe {
+            let data = self.get_type_data();
+            let parent_class = data.as_ref().get_parent_class() as *mut ffi::GstBaseSinkClass;
+            (*parent_class)
+                .set_caps
+                .map(|f| from_glib(f(element.to_glib_none().0, caps.as_mut_ptr())))
+                .unwrap_or(true)
+        }
+    }
+
+    fn parent_fixate(&self, element: &BaseSink, caps: gst::Caps) -> gst::Caps {
+        unsafe {
+            let data = self.get_type_data();
+            let parent_class = data.as_ref().get_parent_class() as *mut ffi::GstBaseSinkClass;
+
+            match (*parent_class).fixate {
+                Some(fixate) => from_glib_full(fixate(element.to_glib_none().0, caps.into_ptr())),
+                None => caps,
+            }
+        }
+    }
+}
+
+unsafe impl<T: ObjectSubclass + BaseSinkImpl> IsSubclassable<T> for BaseSinkClass
+where
+    <T as ObjectSubclass>::Instance: PanicPoison,
+{
+    fn override_vfuncs(&mut self) {
+        <gst::ElementClass as IsSubclassable<T>>::override_vfuncs(self);
+        unsafe {
+            let klass = &mut *(self as *const Self as *mut ffi::GstBaseSinkClass);
+            klass.start = Some(base_sink_start::<T>);
+            klass.stop = Some(base_sink_stop::<T>);
+            klass.render = Some(base_sink_render::<T>);
+            klass.render_list = Some(base_sink_render_list::<T>);
+            klass.prepare = Some(base_sink_prepare::<T>);
+            klass.prepare_list = Some(base_sink_prepare_list::<T>);
+            klass.query = Some(base_sink_query::<T>);
+            klass.event = Some(base_sink_event::<T>);
+            klass.get_caps = Some(base_sink_get_caps::<T>);
+            klass.set_caps = Some(base_sink_set_caps::<T>);
+            klass.fixate = Some(base_sink_fixate::<T>);
+            klass.unlock = Some(base_sink_unlock::<T>);
+            klass.unlock_stop = Some(base_sink_unlock_stop::<T>);
+        }
+    }
+}
+
+unsafe extern "C" fn base_sink_start<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+) -> glib_ffi::gboolean
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), false, { imp.start(&wrap) }).to_glib()
+}
+
+unsafe extern "C" fn base_sink_stop<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+) -> glib_ffi::gboolean
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), false, { imp.stop(&wrap) }).to_glib()
+}
+
+unsafe extern "C" fn base_sink_render<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+    buffer: *mut gst_ffi::GstBuffer,
+) -> gst_ffi::GstFlowReturn
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+    let buffer = gst::BufferRef::from_ptr(buffer);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), gst::FlowReturn::Error, {
+        imp.render(&wrap, buffer)
+    })
+    .to_glib()
+}
+
+unsafe extern "C" fn base_sink_prepare<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+    buffer: *mut gst_ffi::GstBuffer,
+) -> gst_ffi::GstFlowReturn
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+    let buffer = gst::BufferRef::from_ptr(buffer);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), gst::FlowReturn::Error, {
+        imp.prepare(&wrap, buffer)
+    })
+    .to_glib()
+}
+
+unsafe extern "C" fn base_sink_render_list<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+    list: *mut gst_ffi::GstBufferList,
+) -> gst_ffi::GstFlowReturn
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+    let list = gst::BufferListRef::from_ptr(list);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), gst::FlowReturn::Error, {
+        imp.render_list(&wrap, list)
+    })
+    .to_glib()
+}
+
+unsafe extern "C" fn base_sink_prepare_list<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+    list: *mut gst_ffi::GstBufferList,
+) -> gst_ffi::GstFlowReturn
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+    let list = gst::BufferListRef::from_ptr(list);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), gst::FlowReturn::Error, {
+        imp.prepare_list(&wrap, list)
+    })
+    .to_glib()
+}
+
+unsafe extern "C" fn base_sink_query<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+    query_ptr: *mut gst_ffi::GstQuery,
+) -> glib_ffi::gboolean
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+    let query = gst::QueryRef::from_mut_ptr(query_ptr);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), false, {
+        BaseSinkImpl::query(imp, &wrap, query)
+    })
+    .to_glib()
+}
+
+unsafe extern "C" fn base_sink_event<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+    event_ptr: *mut gst_ffi::GstEvent,
+) -> glib_ffi::gboolean
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), false, {
+        imp.event(&wrap, from_glib_full(event_ptr))
+    })
+    .to_glib()
+}
+
+unsafe extern "C" fn base_sink_get_caps<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+    filter: *mut gst_ffi::GstCaps,
+) -> *mut gst_ffi::GstCaps
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+    let filter = if filter.is_null() {
+        None
+    } else {
+        Some(gst::CapsRef::from_ptr(filter))
+    };
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), None, {
+        imp.get_caps(&wrap, filter)
+    })
+    .map(|caps| caps.into_ptr())
+    .unwrap_or(ptr::null_mut())
+}
+
+unsafe extern "C" fn base_sink_set_caps<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+    caps: *mut gst_ffi::GstCaps,
+) -> glib_ffi::gboolean
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+    let caps = gst::CapsRef::from_ptr(caps);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), false, {
+        imp.set_caps(&wrap, caps)
+    })
+    .to_glib()
+}
+
+unsafe extern "C" fn base_sink_fixate<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+    caps: *mut gst_ffi::GstCaps,
+) -> *mut gst_ffi::GstCaps
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+    let caps = from_glib_full(caps);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), gst::Caps::new_empty(), {
+        imp.fixate(&wrap, caps)
+    })
+    .into_ptr()
+}
+
+unsafe extern "C" fn base_sink_unlock<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+) -> glib_ffi::gboolean
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), false, { imp.unlock(&wrap) }).to_glib()
+}
+
+unsafe extern "C" fn base_sink_unlock_stop<T: ObjectSubclass>(
+    ptr: *mut ffi::GstBaseSink,
+) -> glib_ffi::gboolean
+where
+    T: BaseSinkImpl,
+    T::Instance: PanicPoison,
+{
+    glib_floating_reference_guard!(ptr);
+    let instance = &*(ptr as *mut T::Instance);
+    let imp = instance.get_impl();
+    let wrap: BaseSink = from_glib_borrow(ptr);
+
+    gst_panic_to_error!(&wrap, &instance.panicked(), false, {
+        imp.unlock_stop(&wrap)
+    })
+    .to_glib()
+}

gstreamer-base/src/subclass/mod.rs

@@ -8,8 +8,10 @@
 // except according to those terms.
 #![cfg_attr(feature = "cargo-clippy", allow(cast_ptr_alignment))]
 
+pub mod base_sink;
 pub mod base_src;
 
 pub mod prelude {
+    pub use super::base_sink::BaseSinkImpl;
     pub use super::base_src::BaseSrcImpl;
 }