opencv 0.98.2

Rust bindings for OpenCV
Documentation 
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use std::ffi::c_void;

use crate::traits::{OpenCVFromExtern, OpenCVTypeExternContainerMove};
use crate::{extern_receive, extern_send};

#[doc(hidden)]
pub trait PtrExtern {
	#[doc(hidden)]
	unsafe fn extern_new_null() -> *mut c_void;
	#[doc(hidden)]
	unsafe fn extern_delete(&mut self);
	#[doc(hidden)]
	unsafe fn extern_inner_as_ptr(&self) -> *const c_void;
	#[doc(hidden)]
	unsafe fn extern_inner_as_ptr_mut(&mut self) -> *mut c_void;
}

#[doc(hidden)]
pub trait PtrExternCtor<T: OpenCVTypeExternContainerMove> {
	#[doc(hidden)]
	unsafe fn extern_new(val: extern_send!(mut T)) -> extern_receive!(Self)
	where
		Self: OpenCVFromExtern;
}

#[doc(hidden)]
#[macro_export]
macro_rules! ptr_extern {
	($type: ty, $extern_new_null: ident, $extern_delete: ident, $extern_inner_as_ptr: ident, $extern_inner_as_ptr_mut: ident $(,)?) => {
		impl $crate::core::PtrExtern for $crate::core::Ptr<$type> {
			#[inline]
			unsafe fn extern_new_null() -> *mut ::std::ffi::c_void {
				unsafe { $crate::sys::$extern_new_null() }
			}

			#[inline]
			unsafe fn extern_delete(&mut self) {
				unsafe { $crate::sys::$extern_delete(self.as_raw_mut()) }
			}

			#[inline]
			unsafe fn extern_inner_as_ptr(&self) -> *const ::std::ffi::c_void {
				unsafe { $crate::sys::$extern_inner_as_ptr(self.as_raw()).cast::<::std::ffi::c_void>() }
			}

			#[inline]
			unsafe fn extern_inner_as_ptr_mut(&mut self) -> *mut ::std::ffi::c_void {
				unsafe { $crate::sys::$extern_inner_as_ptr_mut(self.as_raw_mut()).cast::<::std::ffi::c_void>() }
			}
		}
	};
}

#[doc(hidden)]
#[macro_export]
macro_rules! ptr_extern_ctor {
	($type: ty, $extern_new: ident) => {
		impl $crate::core::PtrExternCtor<$type> for $crate::core::Ptr<$type> {
			#[inline]
			unsafe fn extern_new(val: extern_container_send!(mut $type)) -> extern_receive!(Self) {
				unsafe { $crate::sys::$extern_new(val) }
			}
		}
	};
}

#[doc(hidden)]
#[macro_export]
macro_rules! ptr_cast_base {
	($type: ty, $base: ty, $extern_convert: ident) => {
		impl ::std::convert::From<$type> for $base {
			#[inline]
			fn from(s: $type) -> Self {
				unsafe { Self::from_raw($crate::sys::$extern_convert(s.into_raw())) }
			}
		}
	};
}