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P300 update lsl #266

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P300 update lsl #266

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13 changes: 12 additions & 1 deletion src/explorepy/stream_processor.py
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Expand Up @@ -186,6 +186,17 @@ def _get_sw_marker_time(self):
with lock:
return self._last_packet_timestamp + get_local_time() - self._last_packet_rcv_time

def _estimate_external_marker_time(self, external_time):
"""Estimates a timestamp to be used in software marker

This method gives an estimation of a timestamp relative to Explore internal clock. This timestamp can be used
for generating a software marker.
"""
with lock:
marker_time = self._last_packet_timestamp + external_time - self._last_packet_rcv_time
print('marker time{}'.format(marker_time))
return marker_time

def dispatch(self, topic, packet):
"""Dispatch a packet to subscribers

Expand Down Expand Up @@ -295,7 +306,7 @@ def set_ext_marker(self, time_lsl, marker_string):
"""Set an external marker in the stream"""
logger.info(f"Setting a software marker with code: {marker_string}")

marker = ExternalMarker.create(time_lsl, marker_string)
marker = ExternalMarker.create(self._estimate_external_marker_time(time_lsl), marker_string)
self.process(marker)

def compare_device_info(self, new_device_info):
Expand Down