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use std::{
ffi::c_void,
marker::PhantomData,
mem::ManuallyDrop,
};
pub use ptr_extern::{PtrExtern, PtrExternCtor};
use crate::{
Result,
traits::{Boxed, OpenCVType, OpenCVTypeArg, OpenCVTypeExternContainer},
};
#[cfg(not(feature = "opencv-32"))]
mod ptr_f32;
mod ptr_extern;
pub struct Ptr<T: ?Sized> where Self: PtrExtern {
ptr: *mut c_void,
_d: PhantomData<T>,
}
impl<T: ?Sized> Ptr<T> where Self: PtrExtern {
pub fn new(val: T) -> Self where T: Sized + for<'a> OpenCVType<'a>, Self: PtrExternCtor<T> {
let val = val.opencv_into_extern_container_nofail();
unsafe { Self::from_raw(Self::extern_new(val.opencv_into_extern())) }
}
pub fn inner_as_raw(&self) -> *const c_void {
unsafe { self.extern_inner_as_ptr() }
}
pub fn inner_as_raw_mut(&mut self) -> *mut c_void {
unsafe { self.extern_inner_as_ptr_mut() }
}
}
impl<T: ?Sized> Boxed for Ptr<T> where Self: PtrExtern {
#[inline]
unsafe fn from_raw(ptr: *mut c_void) -> Self {
Self { ptr, _d: PhantomData }
}
#[inline]
fn into_raw(self) -> *mut c_void {
ManuallyDrop::new(self).ptr
}
#[inline]
fn as_raw(&self) -> *const c_void {
self.ptr
}
#[inline]
fn as_raw_mut(&mut self) -> *mut c_void {
self.ptr
}
}
impl<T: ?Sized> OpenCVType<'_> for Ptr<T> where Self: PtrExtern {
type Arg = Self;
type ExternReceive = *mut c_void;
type ExternContainer = Self;
#[inline]
fn opencv_into_extern_container(self) -> Result<Self::ExternContainer> {
Ok(self)
}
#[inline]
fn opencv_into_extern_container_nofail(self) -> Self::ExternContainer {
self
}
#[inline]
unsafe fn opencv_from_extern(s: Self::ExternReceive) -> Self {
Self::from_raw(s)
}
}
impl<T: ?Sized> OpenCVTypeArg<'_> for Ptr<T> where Self: PtrExtern {
type ExternContainer = Self;
#[inline]
fn opencv_into_extern_container(self) -> Result<Self::ExternContainer> {
Ok(self)
}
#[inline]
fn opencv_into_extern_container_nofail(self) -> Self::ExternContainer {
self
}
}
impl<T: ?Sized> OpenCVTypeExternContainer for Ptr<T> where Self: PtrExtern {
type ExternSend = *const c_void;
type ExternSendMut = *mut c_void;
#[inline]
fn opencv_as_extern(&self) -> Self::ExternSend {
self.as_raw()
}
#[inline]
fn opencv_as_extern_mut(&mut self) -> Self::ExternSendMut {
self.as_raw_mut()
}
fn opencv_into_extern(self) -> Self::ExternSendMut {
self.into_raw()
}
}
impl<T: ?Sized> Drop for Ptr<T> where Self: PtrExtern {
fn drop(&mut self) {
unsafe { self.extern_delete() }
}
}