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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 bt2 | |
27 | ||
28 | ||
29 | def _plugin_ptrs_to_plugins(plugin_ptrs): | |
30 | plugins = [] | |
31 | ||
32 | for plugin_ptr in plugin_ptrs: | |
33 | plugin = _Plugin._create_from_ptr(plugin_ptr) | |
34 | plugins.append(plugin) | |
35 | ||
36 | return plugins | |
37 | ||
38 | ||
39 | def create_plugins_from_file(path): | |
40 | utils._check_str(path) | |
41 | plugin_ptrs = native_bt.py3_plugin_create_all_from_file(path) | |
42 | ||
43 | if plugin_ptrs is None: | |
44 | raise bt2.Error('cannot get plugin objects from file') | |
45 | ||
46 | return _plugin_ptrs_to_plugins(plugin_ptrs) | |
47 | ||
48 | ||
49 | def create_plugins_from_dir(path, recurse=True): | |
50 | utils._check_str(path) | |
51 | plugin_ptrs = native_bt.py3_plugin_create_all_from_dir(path, recurse) | |
52 | ||
53 | if plugin_ptrs is None: | |
54 | raise bt2.Error('cannot get plugin objects from directory') | |
55 | ||
56 | return _plugin_ptrs_to_plugins(plugin_ptrs) | |
57 | ||
58 | ||
59 | class _PluginVersion: | |
60 | def __init__(self, major, minor, patch, extra): | |
61 | self._major = major | |
62 | self._minor = minor | |
63 | self._patch = patch | |
64 | self._extra = extra | |
65 | ||
66 | @property | |
67 | def major(self): | |
68 | return self._major | |
69 | ||
70 | @property | |
71 | def minor(self): | |
72 | return self._minor | |
73 | ||
74 | @property | |
75 | def patch(self): | |
76 | return self._patch | |
77 | ||
78 | @property | |
79 | def extra(self): | |
80 | return self._extra | |
81 | ||
82 | def __str__(self): | |
83 | extra = '' | |
84 | ||
85 | if self._extra is not None: | |
86 | extra = self._extra | |
87 | ||
88 | return '{}.{}.{}{}'.format(self._major, self._minor, self._patch, extra) | |
89 | ||
90 | ||
91 | class _Plugin(object._Object, collections.abc.Sequence): | |
92 | @property | |
93 | def name(self): | |
94 | name = native_bt.plugin_get_name(self._ptr) | |
95 | utils._handle_ptr(name, "cannot get plugin object's name") | |
96 | return name | |
97 | ||
98 | @property | |
99 | def author(self): | |
100 | return native_bt.plugin_get_author(self._ptr) | |
101 | ||
102 | @property | |
103 | def license(self): | |
104 | return native_bt.plugin_get_license(self._ptr) | |
105 | ||
106 | @property | |
107 | def description(self): | |
108 | return native_bt.plugin_get_description(self._ptr) | |
109 | ||
110 | @property | |
111 | def path(self): | |
112 | return native_bt.plugin_get_path(self._ptr) | |
113 | ||
114 | @property | |
115 | def version(self): | |
116 | status, major, minor, patch, extra = native_bt.plugin_get_version(self._ptr) | |
117 | ||
118 | if status < 0: | |
119 | return | |
120 | ||
121 | return _PluginVersion(major, minor, patch, extra) | |
122 | ||
123 | def source_component_class(self, name): | |
124 | utils._check_str(name) | |
125 | cc_ptr = native_bt.plugin_get_component_class_by_name_and_type(self._ptr, | |
126 | name, | |
127 | native_bt.COMPONENT_CLASS_TYPE_SOURCE) | |
128 | ||
129 | if cc_ptr is None: | |
130 | return | |
131 | ||
132 | return bt2.component._create_generic_component_class_from_ptr(cc_ptr) | |
133 | ||
134 | def filter_component_class(self, name): | |
135 | utils._check_str(name) | |
136 | cc_ptr = native_bt.plugin_get_component_class_by_name_and_type(self._ptr, | |
137 | name, | |
138 | native_bt.COMPONENT_CLASS_TYPE_FILTER) | |
139 | ||
140 | if cc_ptr is None: | |
141 | return | |
142 | ||
143 | return bt2.component._create_generic_component_class_from_ptr(cc_ptr) | |
144 | ||
145 | def sink_component_class(self, name): | |
146 | utils._check_str(name) | |
147 | cc_ptr = native_bt.plugin_get_component_class_by_name_and_type(self._ptr, | |
148 | name, | |
149 | native_bt.COMPONENT_CLASS_TYPE_SINK) | |
150 | ||
151 | if cc_ptr is None: | |
152 | return | |
153 | ||
154 | return bt2.component._create_generic_component_class_from_ptr(cc_ptr) | |
155 | ||
156 | def __len__(self): | |
157 | count = native_bt.plugin_get_component_class_count(self._ptr) | |
158 | utils._handle_ret(count, "cannot get plugin object's component class count") | |
159 | return count | |
160 | ||
161 | def __getitem__(self, index): | |
162 | utils._check_uint64(index) | |
163 | ||
164 | if index >= len(self): | |
165 | raise IndexError | |
166 | ||
167 | cc_ptr = native_bt.plugin_get_component_class(self._ptr, index) | |
168 | utils._handle_ptr(cc_ptr, "cannot get plugin object's component class object") | |
169 | return bt2.component._create_generic_component_class_from_ptr(cc_ptr) |