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Diffstat (limited to 'silx/opencl/utils.py')
| -rw-r--r-- | silx/opencl/utils.py | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/silx/opencl/utils.py b/silx/opencl/utils.py deleted file mode 100644 index f558c1b..0000000 --- a/silx/opencl/utils.py +++ /dev/null @@ -1,121 +0,0 @@ -# -*- coding: utf-8 -*- -# /*########################################################################## -# Copyright (C) 2017 European Synchrotron Radiation Facility -# -# Permission is hereby granted, free of charge, to any person obtaining a copy -# of this software and associated documentation files (the "Software"), to deal -# in the Software without restriction, including without limitation the rights -# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -# copies of the Software, and to permit persons to whom the Software is -# furnished to do so, subject to the following conditions: -# -# The above copyright notice and this permission notice shall be included in -# all copies or substantial portions of the Software. -# -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -# THE SOFTWARE. -# -# ############################################################################*/ -""" -Project: Sift implementation in Python + OpenCL - https://github.com/silx-kit/silx -""" - -from __future__ import division - -__authors__ = ["Jérôme Kieffer", "Pierre Paleo"] -__contact__ = "jerome.kieffer@esrf.eu" -__license__ = "MIT" -__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France" -__date__ = "06/09/2017" -__status__ = "Production" - -import os -import numpy -from .. import resources -from math import log, ceil - - -def calc_size(shape, blocksize): - """ - Calculate the optimal size for a kernel according to the workgroup size - """ - if "__len__" in dir(blocksize): - return tuple((int(i) + int(j) - 1) & ~(int(j) - 1) for i, j in zip(shape, blocksize)) - else: - return tuple((int(i) + int(blocksize) - 1) & ~(int(blocksize) - 1) for i in shape) - - -def nextpower(n): - """Calculate the power of two - - :param n: an integer, for example 100 - :return: another integer, 100-> 128 - """ - return 1 << int(ceil(log(n, 2))) - - -def sizeof(shape, dtype="uint8"): - """ - Calculate the number of bytes needed to allocate for a given structure - - :param shape: size or tuple of sizes - :param dtype: data type - """ - itemsize = numpy.dtype(dtype).itemsize - cnt = 1 - if "__len__" in dir(shape): - for dim in shape: - cnt *= dim - else: - cnt = int(shape) - return cnt * itemsize - - -def get_cl_file(resource): - """get the full path of a openCL resource file - - The resource name can be prefixed by the name of a resource directory. For - example "silx:foo.png" identify the resource "foo.png" from the resource - directory "silx". - See also :func:`silx.resources.register_resource_directory`. - - :param str resource: Resource name. File name contained if the `opencl` - directory of the resources. - :return: the full path of the openCL source file - """ - if not resource.endswith(".cl"): - resource += ".cl" - return resources._resource_filename(resource, - default_directory="opencl") - - -def read_cl_file(filename): - """ - :param filename: read an OpenCL file and apply a preprocessor - :return: preprocessed source code - """ - with open(get_cl_file(filename), "r") as f: - # Dummy preprocessor which removes the #include - lines = [i for i in f.readlines() if not i.startswith("#include ")] - return "".join(lines) - - -get_opencl_code = read_cl_file - - -def concatenate_cl_kernel(filenames): - """Concatenates all the kernel from the list of files - - :param filenames: filenames containing the kernels - :type filenames: list of str which can be filename of kernel as a string. - :return: a string with all kernels concatenated - - this method concatenates all the kernel from the list - """ - return os.linesep.join(read_cl_file(fn) for fn in filenames) |