| 1 | # SPDX-License-Identifier: MIT |
| 2 | # |
| 3 | # Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com> |
| 4 | |
| 5 | from bt2 import native_bt, object, utils |
| 6 | from bt2 import clock_snapshot as bt2_clock_snapshot |
| 7 | from bt2 import packet as bt2_packet |
| 8 | from bt2 import stream as bt2_stream |
| 9 | from bt2 import event as bt2_event |
| 10 | |
| 11 | |
| 12 | def _create_from_ptr(ptr): |
| 13 | msg_type = native_bt.message_get_type(ptr) |
| 14 | return _MESSAGE_TYPE_TO_CLS[msg_type]._create_from_ptr(ptr) |
| 15 | |
| 16 | |
| 17 | class _MessageConst(object._SharedObject): |
| 18 | @staticmethod |
| 19 | def _get_ref(ptr): |
| 20 | native_bt.message_get_ref(ptr) |
| 21 | |
| 22 | @staticmethod |
| 23 | def _put_ref(ptr): |
| 24 | native_bt.message_put_ref(ptr) |
| 25 | |
| 26 | @staticmethod |
| 27 | def _check_has_default_clock_class(clock_class): |
| 28 | if clock_class is None: |
| 29 | raise ValueError( |
| 30 | "cannot get default clock snapshot: stream class has no default clock class" |
| 31 | ) |
| 32 | |
| 33 | |
| 34 | class _Message(_MessageConst): |
| 35 | pass |
| 36 | |
| 37 | |
| 38 | class _MessageWithDefaultClockSnapshot: |
| 39 | def _get_default_clock_snapshot(self, borrow_clock_snapshot_ptr): |
| 40 | snapshot_ptr = borrow_clock_snapshot_ptr(self._ptr) |
| 41 | |
| 42 | return bt2_clock_snapshot._ClockSnapshotConst._create_from_ptr_and_get_ref( |
| 43 | snapshot_ptr, self._ptr, self._get_ref, self._put_ref |
| 44 | ) |
| 45 | |
| 46 | |
| 47 | class _EventMessageConst(_MessageConst, _MessageWithDefaultClockSnapshot): |
| 48 | _borrow_default_clock_snapshot = staticmethod( |
| 49 | native_bt.message_event_borrow_default_clock_snapshot_const |
| 50 | ) |
| 51 | _borrow_event = staticmethod(native_bt.message_event_borrow_event_const) |
| 52 | _event_pycls = property(lambda _: bt2_event._EventConst) |
| 53 | |
| 54 | @property |
| 55 | def default_clock_snapshot(self): |
| 56 | self._check_has_default_clock_class(self.event.stream.cls.default_clock_class) |
| 57 | return self._get_default_clock_snapshot(self._borrow_default_clock_snapshot) |
| 58 | |
| 59 | @property |
| 60 | def event(self): |
| 61 | event_ptr = self._borrow_event(self._ptr) |
| 62 | assert event_ptr is not None |
| 63 | return self._event_pycls._create_from_ptr_and_get_ref( |
| 64 | event_ptr, self._ptr, self._get_ref, self._put_ref |
| 65 | ) |
| 66 | |
| 67 | |
| 68 | class _EventMessage(_EventMessageConst, _Message): |
| 69 | _borrow_event = staticmethod(native_bt.message_event_borrow_event) |
| 70 | _stream_pycls = property(lambda _: bt2_stream._Stream) |
| 71 | _event_pycls = property(lambda _: bt2_event._Event) |
| 72 | |
| 73 | |
| 74 | class _PacketMessageConst(_MessageConst, _MessageWithDefaultClockSnapshot): |
| 75 | _packet_pycls = bt2_packet._PacketConst |
| 76 | |
| 77 | @property |
| 78 | def default_clock_snapshot(self): |
| 79 | self._check_has_default_clock_class(self.packet.stream.cls.default_clock_class) |
| 80 | return self._get_default_clock_snapshot(self._borrow_default_clock_snapshot_ptr) |
| 81 | |
| 82 | @property |
| 83 | def packet(self): |
| 84 | packet_ptr = self._borrow_packet(self._ptr) |
| 85 | assert packet_ptr is not None |
| 86 | return self._packet_pycls._create_from_ptr_and_get_ref(packet_ptr) |
| 87 | |
| 88 | |
| 89 | class _PacketMessage(_PacketMessageConst, _Message): |
| 90 | _packet_pycls = bt2_packet._Packet |
| 91 | |
| 92 | |
| 93 | class _PacketBeginningMessageConst(_PacketMessageConst): |
| 94 | _borrow_packet = staticmethod( |
| 95 | native_bt.message_packet_beginning_borrow_packet_const |
| 96 | ) |
| 97 | _borrow_default_clock_snapshot_ptr = staticmethod( |
| 98 | native_bt.message_packet_beginning_borrow_default_clock_snapshot_const |
| 99 | ) |
| 100 | |
| 101 | |
| 102 | class _PacketBeginningMessage(_PacketMessage): |
| 103 | _borrow_packet = staticmethod(native_bt.message_packet_beginning_borrow_packet) |
| 104 | |
| 105 | |
| 106 | class _PacketEndMessageConst(_PacketMessageConst): |
| 107 | _borrow_packet = staticmethod(native_bt.message_packet_end_borrow_packet_const) |
| 108 | _borrow_default_clock_snapshot_ptr = staticmethod( |
| 109 | native_bt.message_packet_end_borrow_default_clock_snapshot_const |
| 110 | ) |
| 111 | |
| 112 | |
| 113 | class _PacketEndMessage(_PacketMessage): |
| 114 | _borrow_packet = staticmethod(native_bt.message_packet_end_borrow_packet) |
| 115 | |
| 116 | |
| 117 | class _StreamMessageConst(_MessageConst, _MessageWithDefaultClockSnapshot): |
| 118 | _stream_pycls = property(lambda _: bt2_stream._StreamConst) |
| 119 | |
| 120 | @property |
| 121 | def stream(self): |
| 122 | stream_ptr = self._borrow_stream_ptr(self._ptr) |
| 123 | assert stream_ptr |
| 124 | return self._stream_pycls._create_from_ptr_and_get_ref(stream_ptr) |
| 125 | |
| 126 | @property |
| 127 | def default_clock_snapshot(self): |
| 128 | self._check_has_default_clock_class(self.stream.cls.default_clock_class) |
| 129 | |
| 130 | status, snapshot_ptr = self._borrow_default_clock_snapshot_ptr(self._ptr) |
| 131 | |
| 132 | if status == native_bt.MESSAGE_STREAM_CLOCK_SNAPSHOT_STATE_UNKNOWN: |
| 133 | return bt2_clock_snapshot._UnknownClockSnapshot() |
| 134 | |
| 135 | return bt2_clock_snapshot._ClockSnapshotConst._create_from_ptr_and_get_ref( |
| 136 | snapshot_ptr, self._ptr, self._get_ref, self._put_ref |
| 137 | ) |
| 138 | |
| 139 | |
| 140 | class _StreamMessage(_StreamMessageConst, _Message): |
| 141 | def _default_clock_snapshot(self, raw_value): |
| 142 | utils._check_uint64(raw_value) |
| 143 | self._set_default_clock_snapshot(self._ptr, raw_value) |
| 144 | |
| 145 | _default_clock_snapshot = property( |
| 146 | fget=_StreamMessageConst.default_clock_snapshot.fget, |
| 147 | fset=_default_clock_snapshot, |
| 148 | ) |
| 149 | _stream_pycls = property(lambda _: bt2_stream._Stream) |
| 150 | |
| 151 | |
| 152 | class _StreamBeginningMessageConst(_StreamMessageConst): |
| 153 | _borrow_stream_ptr = staticmethod( |
| 154 | native_bt.message_stream_beginning_borrow_stream_const |
| 155 | ) |
| 156 | _borrow_default_clock_snapshot_ptr = staticmethod( |
| 157 | native_bt.message_stream_beginning_borrow_default_clock_snapshot_const |
| 158 | ) |
| 159 | |
| 160 | |
| 161 | class _StreamBeginningMessage(_StreamMessage): |
| 162 | _borrow_stream_ptr = staticmethod(native_bt.message_stream_beginning_borrow_stream) |
| 163 | _set_default_clock_snapshot = staticmethod( |
| 164 | native_bt.message_stream_beginning_set_default_clock_snapshot |
| 165 | ) |
| 166 | |
| 167 | |
| 168 | class _StreamEndMessageConst(_StreamMessageConst): |
| 169 | _borrow_stream_ptr = staticmethod(native_bt.message_stream_end_borrow_stream_const) |
| 170 | _borrow_default_clock_snapshot_ptr = staticmethod( |
| 171 | native_bt.message_stream_end_borrow_default_clock_snapshot_const |
| 172 | ) |
| 173 | |
| 174 | |
| 175 | class _StreamEndMessage(_StreamMessage): |
| 176 | _borrow_stream_ptr = staticmethod(native_bt.message_stream_end_borrow_stream) |
| 177 | _set_default_clock_snapshot = staticmethod( |
| 178 | native_bt.message_stream_end_set_default_clock_snapshot |
| 179 | ) |
| 180 | |
| 181 | |
| 182 | class _MessageIteratorInactivityMessageConst( |
| 183 | _MessageConst, _MessageWithDefaultClockSnapshot |
| 184 | ): |
| 185 | _borrow_clock_snapshot_ptr = staticmethod( |
| 186 | native_bt.message_message_iterator_inactivity_borrow_clock_snapshot_const |
| 187 | ) |
| 188 | |
| 189 | @property |
| 190 | def clock_snapshot(self): |
| 191 | # This kind of message always has a clock class: no |
| 192 | # need to call self._check_has_default_clock_class() here. |
| 193 | return self._get_default_clock_snapshot(self._borrow_clock_snapshot_ptr) |
| 194 | |
| 195 | |
| 196 | class _MessageIteratorInactivityMessage( |
| 197 | _MessageIteratorInactivityMessageConst, _Message |
| 198 | ): |
| 199 | pass |
| 200 | |
| 201 | |
| 202 | class _DiscardedMessageConst(_MessageConst, _MessageWithDefaultClockSnapshot): |
| 203 | _stream_pycls = property(lambda _: bt2_stream._StreamConst) |
| 204 | |
| 205 | @property |
| 206 | def stream(self): |
| 207 | stream_ptr = self._borrow_stream_ptr(self._ptr) |
| 208 | assert stream_ptr |
| 209 | return self._stream_pycls._create_from_ptr_and_get_ref(stream_ptr) |
| 210 | |
| 211 | @property |
| 212 | def count(self): |
| 213 | avail, count = self._get_count(self._ptr) |
| 214 | if avail is native_bt.PROPERTY_AVAILABILITY_AVAILABLE: |
| 215 | return count |
| 216 | |
| 217 | def _check_has_default_clock_snapshots(self): |
| 218 | if not self._has_default_clock_snapshots: |
| 219 | raise ValueError( |
| 220 | "cannot get default clock snapshot: such a message has no clock snapshots for this stream class" |
| 221 | ) |
| 222 | |
| 223 | @property |
| 224 | def beginning_default_clock_snapshot(self): |
| 225 | self._check_has_default_clock_snapshots() |
| 226 | return self._get_default_clock_snapshot( |
| 227 | self._borrow_beginning_clock_snapshot_ptr |
| 228 | ) |
| 229 | |
| 230 | @property |
| 231 | def end_default_clock_snapshot(self): |
| 232 | self._check_has_default_clock_snapshots() |
| 233 | return self._get_default_clock_snapshot(self._borrow_end_clock_snapshot_ptr) |
| 234 | |
| 235 | |
| 236 | class _DiscardedMessage(_DiscardedMessageConst, _Message): |
| 237 | _stream_pycls = property(lambda _: bt2_stream._Stream) |
| 238 | |
| 239 | def _set_count(self, count): |
| 240 | utils._check_uint64(count) |
| 241 | |
| 242 | if count == 0: |
| 243 | raise ValueError("discarded {} count is 0".format(self._item_name)) |
| 244 | |
| 245 | self._set_count(self._ptr, count) |
| 246 | |
| 247 | _count = property(fget=_DiscardedMessageConst.count.fget, fset=_set_count) |
| 248 | |
| 249 | |
| 250 | class _DiscardedEventsMessageConst(_DiscardedMessageConst): |
| 251 | _borrow_stream_ptr = staticmethod( |
| 252 | native_bt.message_discarded_events_borrow_stream_const |
| 253 | ) |
| 254 | _get_count = staticmethod(native_bt.message_discarded_events_get_count) |
| 255 | _borrow_beginning_clock_snapshot_ptr = staticmethod( |
| 256 | native_bt.message_discarded_events_borrow_beginning_default_clock_snapshot_const |
| 257 | ) |
| 258 | _borrow_end_clock_snapshot_ptr = staticmethod( |
| 259 | native_bt.message_discarded_events_borrow_end_default_clock_snapshot_const |
| 260 | ) |
| 261 | |
| 262 | @property |
| 263 | def _has_default_clock_snapshots(self): |
| 264 | return self.stream.cls.discarded_events_have_default_clock_snapshots |
| 265 | |
| 266 | |
| 267 | class _DiscardedEventsMessage(_DiscardedEventsMessageConst, _DiscardedMessage): |
| 268 | _borrow_stream_ptr = staticmethod(native_bt.message_discarded_events_borrow_stream) |
| 269 | _set_count = staticmethod(native_bt.message_discarded_events_set_count) |
| 270 | _item_name = "event" |
| 271 | |
| 272 | |
| 273 | class _DiscardedPacketsMessageConst(_DiscardedMessageConst): |
| 274 | _borrow_stream_ptr = staticmethod( |
| 275 | native_bt.message_discarded_packets_borrow_stream_const |
| 276 | ) |
| 277 | _get_count = staticmethod(native_bt.message_discarded_packets_get_count) |
| 278 | _borrow_beginning_clock_snapshot_ptr = staticmethod( |
| 279 | native_bt.message_discarded_packets_borrow_beginning_default_clock_snapshot_const |
| 280 | ) |
| 281 | _borrow_end_clock_snapshot_ptr = staticmethod( |
| 282 | native_bt.message_discarded_packets_borrow_end_default_clock_snapshot_const |
| 283 | ) |
| 284 | |
| 285 | @property |
| 286 | def _has_default_clock_snapshots(self): |
| 287 | return self.stream.cls.discarded_packets_have_default_clock_snapshots |
| 288 | |
| 289 | |
| 290 | class _DiscardedPacketsMessage(_DiscardedPacketsMessageConst, _DiscardedMessage): |
| 291 | _borrow_stream_ptr = staticmethod(native_bt.message_discarded_packets_borrow_stream) |
| 292 | _set_count = staticmethod(native_bt.message_discarded_packets_set_count) |
| 293 | _item_name = "packet" |
| 294 | |
| 295 | |
| 296 | _MESSAGE_TYPE_TO_CLS = { |
| 297 | native_bt.MESSAGE_TYPE_EVENT: _EventMessage, |
| 298 | native_bt.MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY: _MessageIteratorInactivityMessage, |
| 299 | native_bt.MESSAGE_TYPE_STREAM_BEGINNING: _StreamBeginningMessage, |
| 300 | native_bt.MESSAGE_TYPE_STREAM_END: _StreamEndMessage, |
| 301 | native_bt.MESSAGE_TYPE_PACKET_BEGINNING: _PacketBeginningMessage, |
| 302 | native_bt.MESSAGE_TYPE_PACKET_END: _PacketEndMessage, |
| 303 | native_bt.MESSAGE_TYPE_DISCARDED_EVENTS: _DiscardedEventsMessage, |
| 304 | native_bt.MESSAGE_TYPE_DISCARDED_PACKETS: _DiscardedPacketsMessage, |
| 305 | } |
| 306 | |
| 307 | _MESSAGE_TYPE_TO_CLS = { |
| 308 | native_bt.MESSAGE_TYPE_EVENT: _EventMessageConst, |
| 309 | native_bt.MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY: _MessageIteratorInactivityMessageConst, |
| 310 | native_bt.MESSAGE_TYPE_STREAM_BEGINNING: _StreamBeginningMessageConst, |
| 311 | native_bt.MESSAGE_TYPE_STREAM_END: _StreamEndMessageConst, |
| 312 | native_bt.MESSAGE_TYPE_PACKET_BEGINNING: _PacketBeginningMessageConst, |
| 313 | native_bt.MESSAGE_TYPE_PACKET_END: _PacketEndMessageConst, |
| 314 | native_bt.MESSAGE_TYPE_DISCARDED_EVENTS: _DiscardedEventsMessageConst, |
| 315 | native_bt.MESSAGE_TYPE_DISCARDED_PACKETS: _DiscardedPacketsMessageConst, |
| 316 | } |