Fixed thumbnail generation for video_port captures

from . import capture, capture_manager

from .capture import CaptureObject

from .capture import CaptureObject, THUMBNAIL_SIZE

from .capture_manager import CaptureManager

import os

import uuid

from collections import OrderedDict

from PIL import Image

import dateutil.parser

from openflexure_microscope.config import JSONEncoder

EXIF_FORMATS = ["JPG", "JPEG", "TIF", "TIFF"]

THUMBNAIL_SIZE = (200, 150)

def pull_usercomment_dict(filepath):

        thumbnail = exif_dict.pop("thumbnail")

        if thumbnail:

            return io.BytesIO(thumbnail)

        # If no thumbnail exists, serve the full image

        return self.data

        # If no thumbnail exists, make and save one

        thumb_bytes = io.BytesIO()

        thumb_im = Image.open(self.data)

        thumb_im.thumbnail(THUMBNAIL_SIZE)

        thumb_im.save(thumb_bytes, "jpeg")

        thumbnail = thumb_bytes.getvalue()

        exif_dict["thumbnail"] = thumbnail

        exif_bytes = piexif.dump(exif_dict)

        piexif.insert(exif_bytes, self.file)

        return io.BytesIO(thumbnail)

    def save(self) -> None:

        """Write stream to file, and save/update metadata file"""

from expiringdict import ExpiringDict

from openflexure_microscope.camera.mock import MissingCamera

from openflexure_microscope.captures import CaptureManager

from openflexure_microscope.captures import CaptureManager, THUMBNAIL_SIZE

from openflexure_microscope.stage.mock import MissingStage

from openflexure_microscope.stage.sanga import SangaDeltaStage, SangaStage

            # Capture to output object

            extras = {}

            if fmt == "jpeg":

                extras["thumbnail"] = (200, 150, 85)

                extras["thumbnail"] = (*THUMBNAIL_SIZE, 85)

            logging.info("Starting microscope capture %s", output.file)

            self.camera.capture(

                output,