def add_text_presence()

in src/process_results/ad_placements.py [0:0]


    def add_text_presence(self, timestamp):
        """
        add a new segment if:
            1. there aren't any yet
            -or-
            2. the new timestamp is beyond the minimum_ad_duration of the latest one
        otherwise just extend the latest segment
        """
        if len(self.text_shown_segments) == 0:
            print(f'Starting new segment at {timestamp}')
            self.text_shown_segments.append({'start': timestamp, 'end': timestamp})
        else:
            latest_segment = self.text_shown_segments[-1]
            time_since_last_segment = timestamp - latest_segment['end']
            if time_since_last_segment < self.min_ad_duration_in_msec:
                print(f'Extending last segment to be {timestamp}')
                latest_segment['end'] = timestamp
            else:
                print(f'Adding new segment at {timestamp}')
                self.text_shown_segments.append({'start': timestamp, 'end': timestamp})