forked from mirrors/gstreamer-rs
95 lines
3.2 KiB
Rust
95 lines
3.2 KiB
Rust
// Take a look at the license at the top of the repository in the LICENSE file.
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use glib::{prelude::*, translate::*};
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use gst::subclass::prelude::*;
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use crate::{Aggregator, AggregatorPad};
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pub trait AggregatorPadImpl: AggregatorPadImplExt + PadImpl {
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fn flush(&self, aggregator: &Aggregator) -> Result<gst::FlowSuccess, gst::FlowError> {
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self.parent_flush(aggregator)
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}
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fn skip_buffer(&self, aggregator: &Aggregator, buffer: &gst::Buffer) -> bool {
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self.parent_skip_buffer(aggregator, buffer)
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}
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}
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mod sealed {
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pub trait Sealed {}
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impl<T: super::AggregatorPadImplExt> Sealed for T {}
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}
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pub trait AggregatorPadImplExt: sealed::Sealed + ObjectSubclass {
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fn parent_flush(&self, aggregator: &Aggregator) -> Result<gst::FlowSuccess, gst::FlowError> {
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unsafe {
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let data = Self::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstAggregatorPadClass;
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(*parent_class)
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.flush
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.map(|f| {
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try_from_glib(f(
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self.obj()
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.unsafe_cast_ref::<AggregatorPad>()
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.to_glib_none()
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.0,
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aggregator.to_glib_none().0,
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))
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})
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.unwrap_or(Ok(gst::FlowSuccess::Ok))
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}
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}
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fn parent_skip_buffer(&self, aggregator: &Aggregator, buffer: &gst::Buffer) -> bool {
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unsafe {
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let data = Self::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstAggregatorPadClass;
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(*parent_class)
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.skip_buffer
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.map(|f| {
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from_glib(f(
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self.obj()
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.unsafe_cast_ref::<AggregatorPad>()
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.to_glib_none()
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.0,
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aggregator.to_glib_none().0,
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buffer.to_glib_none().0,
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))
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})
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.unwrap_or(false)
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}
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}
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}
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impl<T: AggregatorPadImpl> AggregatorPadImplExt for T {}
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unsafe impl<T: AggregatorPadImpl> IsSubclassable<T> for AggregatorPad {
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fn class_init(klass: &mut glib::Class<Self>) {
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Self::parent_class_init::<T>(klass);
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let klass = klass.as_mut();
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klass.flush = Some(aggregator_pad_flush::<T>);
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klass.skip_buffer = Some(aggregator_pad_skip_buffer::<T>);
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}
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}
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unsafe extern "C" fn aggregator_pad_flush<T: AggregatorPadImpl>(
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ptr: *mut ffi::GstAggregatorPad,
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aggregator: *mut ffi::GstAggregator,
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) -> gst::ffi::GstFlowReturn {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.imp();
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let res: gst::FlowReturn = imp.flush(&from_glib_borrow(aggregator)).into();
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res.into_glib()
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}
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unsafe extern "C" fn aggregator_pad_skip_buffer<T: AggregatorPadImpl>(
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ptr: *mut ffi::GstAggregatorPad,
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aggregator: *mut ffi::GstAggregator,
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buffer: *mut gst::ffi::GstBuffer,
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) -> glib::ffi::gboolean {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.imp();
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imp.skip_buffer(&from_glib_borrow(aggregator), &from_glib_borrow(buffer))
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.into_glib()
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}
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