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, otherwise 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, a 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.