# This file is part of Xpra.
# Copyright (C) 2015-2018 Antoine Martin <antoine@devloop.org.uk>
# Xpra is released under the terms of the GNU GPL v2, or, at your option, any
# later version. See the file COPYING for details.

#cython: language_level=3

from cpython.buffer cimport PyBuffer_FillInfo

cdef getbuf(size_t l)
cdef padbuf(size_t l, size_t padding)
cdef makebuf(void *p, size_t l)

ctypedef void dealloc_callback(const void *p, size_t l, void *arg)


cdef void *memalign(size_t size) nogil


cdef object memory_as_pybuffer(void* ptr, Py_ssize_t buf_len, int readonly)

cdef int object_as_buffer(object obj, const void ** buffer, Py_ssize_t * buffer_len)

cdef int object_as_write_buffer(object  obj, void ** buffer, Py_ssize_t * buffer_len)

cdef unsigned long long xxh64(const void* input, size_t length, unsigned long long seed) nogil


cdef class MemBuf:
    cdef const void *p
    cdef size_t l
    cdef dealloc_callback *dealloc_cb_p
    cdef void *dealloc_cb_arg

    cdef const void *get_mem(self)