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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt for Python.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "shibokenbuffer.h"
#include <cstdlib>
#include <cstring>
bool Shiboken::Buffer::checkType(PyObject *pyObj)
{
#ifdef IS_PY3K
return PyObject_CheckBuffer(pyObj) != 0;
#else
return PyObject_CheckReadBuffer(pyObj) != 0;
#endif
}
void *Shiboken::Buffer::getPointer(PyObject *pyObj, Py_ssize_t *size)
{
const void *buffer = nullptr;
#ifdef IS_PY3K
Py_buffer view;
if (PyObject_GetBuffer(pyObj, &view, PyBUF_ND) == 0) {
if (size)
*size = view.len;
buffer = view.buf;
PyBuffer_Release(&view);
return view.buf;
}
return nullptr;
#else
Py_ssize_t bufferSize = 0;
PyObject_AsReadBuffer(pyObj, &buffer, &bufferSize);
if (size)
*size = bufferSize;
#endif
return const_cast<void *>(buffer);
}
PyObject *Shiboken::Buffer::newObject(void *memory, Py_ssize_t size, Type type)
{
if (size == 0)
Py_RETURN_NONE;
#ifdef IS_PY3K
Py_buffer view;
memset(&view, 0, sizeof(Py_buffer));
view.buf = memory;
view.len = size;
view.readonly = type == Shiboken::Buffer::ReadOnly;
view.ndim = 1;
view.itemsize = sizeof(char);
Py_ssize_t shape[] = { size };
view.shape = shape;
// Pep384: This is way too complicated and impossible with the limited api:
//return PyMemoryView_FromBuffer(&view);
return PyMemoryView_FromMemory(reinterpret_cast<char *>(view.buf),
size, type == ReadOnly ? PyBUF_READ : PyBUF_WRITE);
#else
return type == ReadOnly ? PyBuffer_FromMemory(memory, size) : PyBuffer_FromReadWriteMemory(memory, size);
#endif
}
PyObject *Shiboken::Buffer::newObject(const void *memory, Py_ssize_t size)
{
return newObject(const_cast<void *>(memory), size, ReadOnly);
}
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