+
+ def _create_packet_end_message(self, packet, default_clock_snapshot=None):
+ utils._check_type(packet, bt2.packet._Packet)
+
+ if packet.stream.stream_class.packets_have_end_default_clock_snapshot:
+ if default_clock_snapshot is None:
+ raise ValueError("packet end messages in this stream must have a default clock snapshots")
+
+ utils._check_uint64(default_clock_snapshot)
+ ptr = native_bt.message_packet_end_create_with_default_clock_snapshot(
+ self._ptr, packet._ptr, default_clock_snapshot)
+ else:
+ if default_clock_snapshot is not None:
+ raise ValueError("packet end messages in this stream must not have a default clock snapshots")
+
+ ptr = native_bt.message_packet_end_create(self._ptr, packet._ptr)
+
+ if ptr is None:
+ raise bt2.CreationError('cannot create packet end message object')
+
+ return bt2.message._PacketEndMessage(ptr)
+
+ def _create_discarded_events_message(self, stream, count=None,
+ beg_clock_snapshot=None,
+ end_clock_snapshot=None):
+ utils._check_type(stream, bt2.stream._Stream)
+
+ if not stream.stream_class.supports_discarded_events:
+ raise ValueError('stream class does not support discarded events')
+
+ if stream.stream_class.discarded_events_have_default_clock_snapshots:
+ if beg_clock_snapshot is None or end_clock_snapshot is None:
+ raise ValueError('discarded events have default clock snapshots for this stream class')
+
+ utils._check_uint64(beg_clock_snapshot)
+ utils._check_uint64(end_clock_snapshot)
+ ptr = native_bt.message_discarded_events_create_with_default_clock_snapshots(
+ self._ptr, stream._ptr, beg_clock_snapshot, end_clock_snapshot)
+ else:
+ if beg_clock_snapshot is not None or end_clock_snapshot is not None:
+ raise ValueError('discarded events have no default clock snapshots for this stream class')
+
+ ptr = native_bt.message_discarded_events_create(
+ self._ptr, stream._ptr)
+
+ if ptr is None:
+ raise bt2.CreationError('cannot discarded events message object')
+
+ msg = bt2.message._DiscardedEventsMessage(ptr)
+
+ if count is not None:
+ msg._count = count
+
+ return msg
+
+ def _create_discarded_packets_message(self, stream, count=None, beg_clock_snapshot=None, end_clock_snapshot=None):
+ utils._check_type(stream, bt2.stream._Stream)
+
+ if not stream.stream_class.supports_discarded_packets:
+ raise ValueError('stream class does not support discarded packets')
+
+ if stream.stream_class.discarded_packets_have_default_clock_snapshots:
+ if beg_clock_snapshot is None or end_clock_snapshot is None:
+ raise ValueError('discarded packets have default clock snapshots for this stream class')
+
+ utils._check_uint64(beg_clock_snapshot)
+ utils._check_uint64(end_clock_snapshot)
+ ptr = native_bt.message_discarded_packets_create_with_default_clock_snapshots(
+ self._ptr, stream._ptr, beg_clock_snapshot, end_clock_snapshot)
+ else:
+ if beg_clock_snapshot is not None or end_clock_snapshot is not None:
+ raise ValueError('discarded packets have no default clock snapshots for this stream class')
+
+ ptr = native_bt.message_discarded_packets_create(
+ self._ptr, stream._ptr)
+
+ if ptr is None:
+ raise bt2.CreationError('cannot discarded packets message object')
+
+ msg = bt2.message._DiscardedPacketsMessage(ptr)
+
+ if count is not None:
+ msg._count = count
+
+ return msg
+