| 1 | # The MIT License (MIT) |
| 2 | # |
| 3 | # Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com> |
| 4 | # |
| 5 | # Permission is hereby granted, free of charge, to any person obtaining a copy |
| 6 | # of this software and associated documentation files (the "Software"), to deal |
| 7 | # in the Software without restriction, including without limitation the rights |
| 8 | # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 9 | # copies of the Software, and to permit persons to whom the Software is |
| 10 | # furnished to do so, subject to the following conditions: |
| 11 | # |
| 12 | # The above copyright notice and this permission notice shall be included in |
| 13 | # all copies or substantial portions of the Software. |
| 14 | # |
| 15 | # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 18 | # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 21 | # THE SOFTWARE. |
| 22 | |
| 23 | from bt2 import native_bt, object, utils |
| 24 | import collections.abc |
| 25 | import bt2.component |
| 26 | import os.path |
| 27 | import bt2 |
| 28 | |
| 29 | |
| 30 | def find_plugins(path, recurse=True): |
| 31 | utils._check_str(path) |
| 32 | utils._check_bool(recurse) |
| 33 | plugin_set_ptr = None |
| 34 | |
| 35 | if os.path.isfile(path): |
| 36 | plugin_set_ptr = native_bt.plugin_create_all_from_file(path) |
| 37 | elif os.path.isdir(path): |
| 38 | plugin_set_ptr = native_bt.plugin_create_all_from_dir(path, int(recurse)) |
| 39 | |
| 40 | if plugin_set_ptr is None: |
| 41 | return |
| 42 | |
| 43 | return _PluginSet._create_from_ptr(plugin_set_ptr) |
| 44 | |
| 45 | |
| 46 | def find_plugin(name): |
| 47 | utils._check_str(name) |
| 48 | ptr = native_bt.plugin_find(name) |
| 49 | |
| 50 | if ptr is None: |
| 51 | return |
| 52 | |
| 53 | return _Plugin._create_from_ptr(ptr) |
| 54 | |
| 55 | |
| 56 | class _PluginSet(object._Object, collections.abc.Sequence): |
| 57 | def __len__(self): |
| 58 | count = native_bt.plugin_set_get_plugin_count(self._ptr) |
| 59 | assert(count >= 0) |
| 60 | return count |
| 61 | |
| 62 | def __getitem__(self, index): |
| 63 | utils._check_uint64(index) |
| 64 | |
| 65 | if index >= len(self): |
| 66 | raise IndexError |
| 67 | |
| 68 | plugin_ptr = native_bt.plugin_set_get_plugin(self._ptr, index) |
| 69 | assert(plugin_ptr) |
| 70 | return _Plugin._create_from_ptr(plugin_ptr) |
| 71 | |
| 72 | |
| 73 | class _PluginVersion: |
| 74 | def __init__(self, major, minor, patch, extra): |
| 75 | self._major = major |
| 76 | self._minor = minor |
| 77 | self._patch = patch |
| 78 | self._extra = extra |
| 79 | |
| 80 | @property |
| 81 | def major(self): |
| 82 | return self._major |
| 83 | |
| 84 | @property |
| 85 | def minor(self): |
| 86 | return self._minor |
| 87 | |
| 88 | @property |
| 89 | def patch(self): |
| 90 | return self._patch |
| 91 | |
| 92 | @property |
| 93 | def extra(self): |
| 94 | return self._extra |
| 95 | |
| 96 | def __str__(self): |
| 97 | extra = '' |
| 98 | |
| 99 | if self._extra is not None: |
| 100 | extra = self._extra |
| 101 | |
| 102 | return '{}.{}.{}{}'.format(self._major, self._minor, self._patch, extra) |
| 103 | |
| 104 | |
| 105 | class _PluginComponentClassesIterator(collections.abc.Iterator): |
| 106 | def __init__(self, plugin_comp_cls): |
| 107 | self._plugin_comp_cls = plugin_comp_cls |
| 108 | self._at = 0 |
| 109 | |
| 110 | def __next__(self): |
| 111 | plugin_ptr = self._plugin_comp_cls._plugin._ptr |
| 112 | comp_cls_type = self._plugin_comp_cls._comp_cls_type |
| 113 | total = native_bt.plugin_get_component_class_count(plugin_ptr) |
| 114 | |
| 115 | while True: |
| 116 | if self._at == total: |
| 117 | raise StopIteration |
| 118 | |
| 119 | comp_cls_ptr = native_bt.plugin_get_component_class_by_index(plugin_ptr, |
| 120 | self._at) |
| 121 | assert(comp_cls_ptr) |
| 122 | cc_type = native_bt.component_class_get_type(comp_cls_ptr) |
| 123 | self._at += 1 |
| 124 | |
| 125 | if cc_type == comp_cls_type: |
| 126 | break |
| 127 | |
| 128 | native_bt.put(comp_cls_ptr) |
| 129 | |
| 130 | name = native_bt.component_class_get_name(comp_cls_ptr) |
| 131 | native_bt.put(comp_cls_ptr) |
| 132 | assert(name is not None) |
| 133 | return name |
| 134 | |
| 135 | |
| 136 | class _PluginComponentClasses(collections.abc.Mapping): |
| 137 | def __init__(self, plugin, comp_cls_type): |
| 138 | self._plugin = plugin |
| 139 | self._comp_cls_type = comp_cls_type |
| 140 | |
| 141 | def __getitem__(self, key): |
| 142 | utils._check_str(key) |
| 143 | cc_ptr = native_bt.plugin_get_component_class_by_name_and_type(self._plugin._ptr, |
| 144 | key, |
| 145 | self._comp_cls_type) |
| 146 | |
| 147 | if cc_ptr is None: |
| 148 | raise KeyError(key) |
| 149 | |
| 150 | return bt2.component._create_generic_component_class_from_ptr(cc_ptr) |
| 151 | |
| 152 | def __len__(self): |
| 153 | count = 0 |
| 154 | total = native_bt.plugin_get_component_class_count(self._plugin._ptr) |
| 155 | |
| 156 | for at in range(total): |
| 157 | comp_cls_ptr = native_bt.plugin_get_component_class_by_index(self._plugin._ptr, |
| 158 | at) |
| 159 | assert(comp_cls_ptr) |
| 160 | cc_type = native_bt.component_class_get_type(comp_cls_ptr) |
| 161 | |
| 162 | if cc_type == self._comp_cls_type: |
| 163 | count += 1 |
| 164 | |
| 165 | native_bt.put(comp_cls_ptr) |
| 166 | |
| 167 | return count |
| 168 | |
| 169 | def __iter__(self): |
| 170 | return _PluginComponentClassesIterator(self) |
| 171 | |
| 172 | |
| 173 | class _Plugin(object._Object): |
| 174 | @property |
| 175 | def name(self): |
| 176 | name = native_bt.plugin_get_name(self._ptr) |
| 177 | assert(name is not None) |
| 178 | return name |
| 179 | |
| 180 | @property |
| 181 | def author(self): |
| 182 | return native_bt.plugin_get_author(self._ptr) |
| 183 | |
| 184 | @property |
| 185 | def license(self): |
| 186 | return native_bt.plugin_get_license(self._ptr) |
| 187 | |
| 188 | @property |
| 189 | def description(self): |
| 190 | return native_bt.plugin_get_description(self._ptr) |
| 191 | |
| 192 | @property |
| 193 | def path(self): |
| 194 | return native_bt.plugin_get_path(self._ptr) |
| 195 | |
| 196 | @property |
| 197 | def version(self): |
| 198 | status, major, minor, patch, extra = native_bt.plugin_get_version(self._ptr) |
| 199 | |
| 200 | if status < 0: |
| 201 | return |
| 202 | |
| 203 | return _PluginVersion(major, minor, patch, extra) |
| 204 | |
| 205 | @property |
| 206 | def source_component_classes(self): |
| 207 | return _PluginComponentClasses(self, native_bt.COMPONENT_CLASS_TYPE_SOURCE) |
| 208 | |
| 209 | @property |
| 210 | def filter_component_classes(self): |
| 211 | return _PluginComponentClasses(self, native_bt.COMPONENT_CLASS_TYPE_FILTER) |
| 212 | |
| 213 | @property |
| 214 | def sink_component_classes(self): |
| 215 | return _PluginComponentClasses(self, native_bt.COMPONENT_CLASS_TYPE_SINK) |