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use glib::prelude::*;
use glib::subclass::prelude::*;
use glib::translate::*;
use std::ptr;
use super::base_src::BaseSrcImpl;
use crate::PushSrc;
pub trait PushSrcImpl: PushSrcImplExt + BaseSrcImpl {
fn fill(
&self,
element: &Self::Type,
buffer: &mut gst::BufferRef,
) -> Result<gst::FlowSuccess, gst::FlowError> {
PushSrcImplExt::parent_fill(self, element, buffer)
}
fn alloc(&self, element: &Self::Type) -> Result<gst::Buffer, gst::FlowError> {
PushSrcImplExt::parent_alloc(self, element)
}
fn create(&self, element: &Self::Type) -> Result<gst::Buffer, gst::FlowError> {
PushSrcImplExt::parent_create(self, element)
}
}
pub trait PushSrcImplExt: ObjectSubclass {
fn parent_fill(
&self,
element: &Self::Type,
buffer: &mut gst::BufferRef,
) -> Result<gst::FlowSuccess, gst::FlowError>;
fn parent_alloc(&self, element: &Self::Type) -> Result<gst::Buffer, gst::FlowError>;
fn parent_create(&self, element: &Self::Type) -> Result<gst::Buffer, gst::FlowError>;
}
impl<T: PushSrcImpl> PushSrcImplExt for T {
fn parent_fill(
&self,
element: &Self::Type,
buffer: &mut gst::BufferRef,
) -> Result<gst::FlowSuccess, gst::FlowError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstPushSrcClass;
(*parent_class)
.fill
.map(|f| {
try_from_glib(f(
element.unsafe_cast_ref::<PushSrc>().to_glib_none().0,
buffer.as_mut_ptr(),
))
})
.unwrap_or(Err(gst::FlowError::NotSupported))
}
}
fn parent_alloc(&self, element: &Self::Type) -> Result<gst::Buffer, gst::FlowError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstPushSrcClass;
(*parent_class)
.alloc
.map(|f| {
let mut buffer_ptr: *mut gst::ffi::GstBuffer = ptr::null_mut();
let buffer_ref = &mut buffer_ptr as *mut _ as *mut gst::ffi::GstBuffer;
gst::FlowSuccess::try_from_glib(f(
element.unsafe_cast_ref::<PushSrc>().to_glib_none().0,
buffer_ref,
))
.map(|_| from_glib_full(buffer_ref))
})
.unwrap_or(Err(gst::FlowError::NotSupported))
}
}
fn parent_create(&self, element: &Self::Type) -> Result<gst::Buffer, gst::FlowError> {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GstPushSrcClass;
(*parent_class)
.create
.map(|f| {
let mut buffer_ptr: *mut gst::ffi::GstBuffer = ptr::null_mut();
let buffer_ref = &mut buffer_ptr as *mut _ as *mut gst::ffi::GstBuffer;
gst::FlowSuccess::try_from_glib(f(
element.unsafe_cast_ref::<PushSrc>().to_glib_none().0,
buffer_ref,
))
.map(|_| from_glib_full(buffer_ref))
})
.unwrap_or(Err(gst::FlowError::NotSupported))
}
}
}
unsafe impl<T: PushSrcImpl> IsSubclassable<T> for PushSrc {
fn class_init(klass: &mut glib::Class<Self>) {
<crate::BaseSrc as IsSubclassable<T>>::class_init(klass);
let klass = klass.as_mut();
klass.fill = Some(push_src_fill::<T>);
klass.alloc = Some(push_src_alloc::<T>);
klass.create = Some(push_src_create::<T>);
}
fn instance_init(instance: &mut glib::subclass::InitializingObject<T>) {
<crate::BaseSrc as IsSubclassable<T>>::instance_init(instance);
}
}
unsafe extern "C" fn push_src_fill<T: PushSrcImpl>(
ptr: *mut ffi::GstPushSrc,
buffer: *mut gst::ffi::GstBuffer,
) -> gst::ffi::GstFlowReturn {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.impl_();
let wrap: Borrowed<PushSrc> = from_glib_borrow(ptr);
let buffer = gst::BufferRef::from_mut_ptr(buffer);
gst::panic_to_error!(&wrap, &imp.panicked(), gst::FlowReturn::Error, {
PushSrcImpl::fill(imp, wrap.unsafe_cast_ref(), buffer).into()
})
.into_glib()
}
unsafe extern "C" fn push_src_alloc<T: PushSrcImpl>(
ptr: *mut ffi::GstPushSrc,
buffer_ptr: *mut gst::ffi::GstBuffer,
) -> gst::ffi::GstFlowReturn {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.impl_();
let wrap: Borrowed<PushSrc> = from_glib_borrow(ptr);
let buffer_ptr = buffer_ptr as *mut *mut gst::ffi::GstBuffer;
gst::panic_to_error!(&wrap, &imp.panicked(), gst::FlowReturn::Error, {
match PushSrcImpl::alloc(imp, wrap.unsafe_cast_ref()) {
Ok(buffer) => {
*buffer_ptr = buffer.into_ptr();
gst::FlowReturn::Ok
}
Err(err) => gst::FlowReturn::from(err),
}
})
.into_glib()
}
unsafe extern "C" fn push_src_create<T: PushSrcImpl>(
ptr: *mut ffi::GstPushSrc,
buffer_ptr: *mut gst::ffi::GstBuffer,
) -> gst::ffi::GstFlowReturn {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.impl_();
let wrap: Borrowed<PushSrc> = from_glib_borrow(ptr);
let buffer_ptr = buffer_ptr as *mut *mut gst::ffi::GstBuffer;
gst::panic_to_error!(&wrap, &imp.panicked(), gst::FlowReturn::Error, {
match PushSrcImpl::create(imp, wrap.unsafe_cast_ref()) {
Ok(buffer) => {
*buffer_ptr = buffer.into_ptr();
gst::FlowReturn::Ok
}
Err(err) => gst::FlowReturn::from(err),
}
})
.into_glib()
}