1 | # pyOASIS - A Python wrapper for OASIS |
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2 | # Authors: Philippe Gambron, Rupert Ford |
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3 | # Copyright (C) 2019 UKRI - STFC |
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4 | |
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5 | # This program is free software: you can redistribute it and/or modify |
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6 | # it under the terms of the GNU Lesser General Public License as |
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7 | # published by the Free Software Foundation, either version 3 of the |
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8 | # License, or any later version. |
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9 | |
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10 | # This program is distributed in the hope that it will be useful, |
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11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | # GNU Lesser General Public License for more details. |
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14 | |
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15 | # A copy of the GNU Lesser General Public License, version 3, is supplied |
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16 | # with this program, in the file lgpl-3.0.txt. It is also available at |
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17 | # <https://www.gnu.org/licenses/lgpl-3.0.html>. |
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18 | |
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19 | |
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20 | """OASIS send/receive (put/get) user interfaces""" |
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21 | |
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22 | import pyoasis |
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23 | import ctypes |
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24 | import numpy as np |
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25 | from numpy import float32, float64 |
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26 | from ctypes import c_int, cdll, CDLL |
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27 | |
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28 | cdll.LoadLibrary("liboasis.cbind.so") |
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29 | LIB = CDLL("liboasis.cbind.so") |
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30 | |
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31 | |
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32 | def get_sizes(field): |
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33 | """Creates an array containing the dimensions of multidimensional fields""" |
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34 | sizes = np.ones(3, np.int32) |
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35 | sizes[:field.ndim] = field.shape |
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36 | return sizes |
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37 | |
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38 | |
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39 | LIB.oasis_c_put.argtypes = [ctypes.c_int, ctypes.c_int, ctypes.c_int, |
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40 | ctypes.c_int, ctypes.c_int, ctypes.c_int, ctypes.c_int, ctypes.c_void_p, |
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41 | ctypes.c_bool, ctypes.POINTER(ctypes.c_int)] |
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42 | LIB.oasis_c_put.restype = ctypes.c_int |
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43 | |
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44 | |
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45 | def put(var_id, kstep, field, write_restart): |
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46 | """Send 8-byte multidimensional field""" |
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47 | sizes = get_sizes(field) |
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48 | kinfo = c_int(0) |
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49 | ierr = c_int(0) |
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50 | p_field = field.ctypes.data |
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51 | storage = c_int(1) # colum-major storage cf. OASIS_COL_MAJOR in oasis_c.h |
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52 | if field.dtype == float32: |
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53 | fkind = c_int(4) |
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54 | elif field.dtype == float64: |
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55 | fkind = c_int(8) |
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56 | else: |
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57 | raise pyoasis.PyOasisException("Data type of field can only by float32 or float64") |
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58 | ierr = LIB.oasis_c_put(var_id, kstep, sizes[0], sizes[1], sizes[2], fkind, storage, |
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59 | p_field, write_restart, kinfo) |
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60 | if (pyoasis.OasisParameters(ierr) != pyoasis.OasisParameters.OASIS_OK): |
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61 | return ierr |
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62 | else: |
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63 | return kinfo.value |
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64 | |
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65 | |
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66 | LIB.oasis_c_get.argtypes = [ctypes.c_int, ctypes.c_int, ctypes.c_int, ctypes.c_int, |
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67 | ctypes.c_int, ctypes.c_int, ctypes.c_int, ctypes.c_void_p, |
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68 | ctypes.POINTER(ctypes.c_int)] |
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69 | LIB.oasis_c_get.restype = ctypes.c_int |
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70 | |
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71 | |
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72 | def get(var_id, kstep, field): |
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73 | """Receive 8-byte multidimensional field""" |
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74 | sizes = get_sizes(field) |
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75 | kinfo = c_int(0) |
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76 | ierr = c_int(0) |
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77 | p_field = field.ctypes.data |
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78 | storage = c_int(1) # colum-major storage cf. OASIS_COL_MAJOR in oasis_c.h |
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79 | if field.dtype == float32: |
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80 | fkind = c_int(4) |
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81 | elif field.dtype == float64: |
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82 | fkind = c_int(8) |
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83 | else: |
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84 | raise pyoasis.PyOasisException("Data type of field can only by float32 or float64") |
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85 | ierr = LIB.oasis_c_get(var_id, kstep, sizes[0], sizes[1], sizes[2], fkind, storage, p_field, kinfo) |
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86 | if (pyoasis.OasisParameters(ierr) != pyoasis.OasisParameters.OASIS_OK): |
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87 | return ierr |
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88 | else: |
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89 | return kinfo.value |
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