Port BaseSink subclassing

This commit is contained in:
Sebastian Dröge 2018-11-20 23:23:31 +02:00
parent 771defa377
commit 2f90961ef1
6 changed files with 463 additions and 3 deletions

View file

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

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

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@ -8,8 +8,9 @@
use ffi; use ffi;
use glib::translate::*; use glib::translate::*;
use glib::IsA; use glib::{IsA, IsClassFor};
use gst; use gst;
use std::ops;
use BaseSink; use BaseSink;
pub trait BaseSinkExtManual { 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()
}
}

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

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@ -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()
}

View file

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