Fixes numpy header.

Author: raplonu

CMakeLists.txt

@@ -227,7 +227,7 @@ endif()
 add_library(emupython INTERFACE)
 
 target_sources(emupython INTERFACE FILE_SET HEADERS BASE_DIRS include/python FILES
-    include/python/emu/pybind11/numpy.h
+    include/python/emu/pybind11/numpy.hpp
     include/python/emu/pybind11/cast/container.hpp
     include/python/emu/pybind11/cast/cstring_view.hpp
     include/python/emu/pybind11/cast/detail/capsule.hpp

include/python/emu/pybind11/buffer.hpp

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <emu/scoped.hpp>
+
+#include <Python.h>
+
+namespace emu::pybind11
+{
+
+namespace detail {
+
+    struct buffer_deleter {
+
+        void operator()(Py_buffer buffer) const noexcept {
+            PyBuffer_Release(&buffer);
+        }
+    };
+
+    using scoped_buffer = scoped<Py_buffer, buffer_deleter>;
+} // namespace detail
+
+
+    struct buffer
+    {
+        buffer() = default;
+
+
+        [[nodiscard]] Py_buffer&       view()       { return buffer_.value; }
+        [[nodiscard]] const Py_buffer& view() const { return buffer_.value; }
+
+
+    private:
+        detail::scoped_buffer buffer_;
+    };
+
+} // namespace emu::pybind11

include/python/emu/pybind11/numpy.h include/python/emu/pybind11/numpy.hpp

@@ -107,15 +107,15 @@ namespace emu::pybind11::numpy
         return dt.is(py::dtype::from_args(py::type::of(py::str())));
     }
 
-    py::dtype to_dtype(dlpack::data_type_ext_t dtype) {
+    inline py::dtype to_dtype(dlpack::data_type_ext_t dtype) {
         return py::dtype(dlpack_type_to_numpy(dtype));
     }
 
-    py::dtype to_dtype(dlpack::data_type_t dtype) {
-        return py::dtype(dlpack_type_to_numpy(dtype));
+    inline py::dtype to_dtype(dlpack::data_type_t dtype) {
+        return py::dtype(dlpack_type_to_numpy(dlpack::from_data_type(dtype)));
     }
 
-    dlpack::data_type_ext_t from_dtype(py::dtype dtype) {
+    inline dlpack::data_type_ext_t from_dtype(py::dtype dtype) {
         return dlpack::data_type_ext_t{
             .code = code_from_np_types(dtype.num()),
             .bits = dtype.itemsize() * CHAR_BIT,