
MemoryView objects
******************

A ``memoryview`` object exposes the C level *buffer interface* as a
Python object which can then be passed around like any other object.

PyObject *PyMemoryView_FromObject(PyObject *obj)

   Create a memoryview object from an object that provides the buffer
   interface. If *obj* supports writable buffer exports, the
   memoryview object will be readable and writable, other it will be
   read-only.

PyObject *PyMemoryView_FromBuffer(Py_buffer *view)

   Create a memoryview object wrapping the given buffer structure
   *view*. The memoryview object then owns the buffer represented by
   *view*, which means you shouldn't try to call
   ``PyBuffer_Release()`` yourself: it will be done on deallocation of
   the memoryview object.

PyObject *PyMemoryView_GetContiguous(PyObject *obj, int buffertype, char order)

   Create a memoryview object to a contiguous chunk of memory (in
   either 'C' or 'F'ortran *order*) from an object that defines the
   buffer interface. If memory is contiguous, the memoryview object
   points to the original memory. Otherwise copy is made and the
   memoryview points to a new bytes object.

int PyMemoryView_Check(PyObject *obj)

   Return true if the object *obj* is a memoryview object.  It is not
   currently allowed to create subclasses of ``memoryview``.

Py_buffer *PyMemoryView_GET_BUFFER(PyObject *obj)

   Return a pointer to the buffer structure wrapped by the given
   memoryview object.  The object **must** be a memoryview instance;
   this macro doesn't check its type, you must do it yourself or you
   will risk crashes.
