| 1 | # SPDX-License-Identifier: MIT |
| 2 | # |
| 3 | # Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com> |
| 4 | |
| 5 | from bt2 import object as bt2_object |
| 6 | from bt2 import native_bt |
| 7 | |
| 8 | |
| 9 | def _bt2_connection(): |
| 10 | from bt2 import connection as bt2_connection |
| 11 | |
| 12 | return bt2_connection |
| 13 | |
| 14 | |
| 15 | def _create_from_const_ptr_and_get_ref(ptr, port_type): |
| 16 | cls = _PORT_TYPE_TO_PYCLS.get(port_type, None) |
| 17 | |
| 18 | if cls is None: |
| 19 | raise TypeError("unknown port type: {}".format(port_type)) |
| 20 | |
| 21 | return cls._create_from_ptr_and_get_ref(ptr) |
| 22 | |
| 23 | |
| 24 | def _create_self_from_ptr_and_get_ref(ptr, port_type): |
| 25 | cls = _PORT_TYPE_TO_USER_PYCLS.get(port_type, None) |
| 26 | |
| 27 | if cls is None: |
| 28 | raise TypeError("unknown port type: {}".format(port_type)) |
| 29 | |
| 30 | return cls._create_from_ptr_and_get_ref(ptr) |
| 31 | |
| 32 | |
| 33 | class _PortConst(bt2_object._SharedObject): |
| 34 | @classmethod |
| 35 | def _get_ref(cls, ptr): |
| 36 | ptr = cls._as_port_ptr(ptr) |
| 37 | return native_bt.port_get_ref(ptr) |
| 38 | |
| 39 | @classmethod |
| 40 | def _put_ref(cls, ptr): |
| 41 | ptr = cls._as_port_ptr(ptr) |
| 42 | return native_bt.port_put_ref(ptr) |
| 43 | |
| 44 | @property |
| 45 | def name(self): |
| 46 | ptr = self._as_port_ptr(self._ptr) |
| 47 | name = native_bt.port_get_name(ptr) |
| 48 | assert name is not None |
| 49 | return name |
| 50 | |
| 51 | @property |
| 52 | def connection(self): |
| 53 | ptr = self._as_port_ptr(self._ptr) |
| 54 | conn_ptr = native_bt.port_borrow_connection_const(ptr) |
| 55 | |
| 56 | if conn_ptr is None: |
| 57 | return |
| 58 | |
| 59 | return _bt2_connection()._ConnectionConst._create_from_ptr_and_get_ref(conn_ptr) |
| 60 | |
| 61 | @property |
| 62 | def is_connected(self): |
| 63 | return self.connection is not None |
| 64 | |
| 65 | |
| 66 | class _InputPortConst(_PortConst): |
| 67 | _as_port_ptr = staticmethod(native_bt.port_input_as_port_const) |
| 68 | |
| 69 | |
| 70 | class _OutputPortConst(_PortConst): |
| 71 | _as_port_ptr = staticmethod(native_bt.port_output_as_port_const) |
| 72 | |
| 73 | |
| 74 | class _UserComponentPort(_PortConst): |
| 75 | @classmethod |
| 76 | def _as_port_ptr(cls, ptr): |
| 77 | ptr = cls._as_self_port_ptr(ptr) |
| 78 | return native_bt.self_component_port_as_port(ptr) |
| 79 | |
| 80 | @property |
| 81 | def connection(self): |
| 82 | ptr = self._as_port_ptr(self._ptr) |
| 83 | conn_ptr = native_bt.port_borrow_connection_const(ptr) |
| 84 | |
| 85 | if conn_ptr is None: |
| 86 | return |
| 87 | |
| 88 | return _bt2_connection()._ConnectionConst._create_from_ptr_and_get_ref(conn_ptr) |
| 89 | |
| 90 | @property |
| 91 | def user_data(self): |
| 92 | ptr = self._as_self_port_ptr(self._ptr) |
| 93 | return native_bt.self_component_port_get_data(ptr) |
| 94 | |
| 95 | |
| 96 | class _UserComponentInputPort(_UserComponentPort, _InputPortConst): |
| 97 | _as_self_port_ptr = staticmethod( |
| 98 | native_bt.self_component_port_input_as_self_component_port |
| 99 | ) |
| 100 | |
| 101 | |
| 102 | class _UserComponentOutputPort(_UserComponentPort, _OutputPortConst): |
| 103 | _as_self_port_ptr = staticmethod( |
| 104 | native_bt.self_component_port_output_as_self_component_port |
| 105 | ) |
| 106 | |
| 107 | |
| 108 | _PORT_TYPE_TO_PYCLS = { |
| 109 | native_bt.PORT_TYPE_INPUT: _InputPortConst, |
| 110 | native_bt.PORT_TYPE_OUTPUT: _OutputPortConst, |
| 111 | } |
| 112 | |
| 113 | |
| 114 | _PORT_TYPE_TO_USER_PYCLS = { |
| 115 | native_bt.PORT_TYPE_INPUT: _UserComponentInputPort, |
| 116 | native_bt.PORT_TYPE_OUTPUT: _UserComponentOutputPort, |
| 117 | } |