158 lines
4.7 KiB
Python
158 lines
4.7 KiB
Python
from openflexure_microscope.api.utilities import get_bool, JsonResponse
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from labthings.server.view import View, ActionView
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from labthings.server.find import find_component
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from labthings.server import fields
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from openflexure_microscope.utilities import filter_dict
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from openflexure_microscope.api.v2.views.captures import CaptureSchema
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import logging
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import io
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from flask import request, abort, url_for, redirect, send_file
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class CaptureAPI(ActionView):
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"""
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Create a new image capture.
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"""
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args = {
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"filename": fields.String(example="MyFileName"),
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"temporary": fields.Boolean(
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missing=False, description="Delete capture on shutdown"
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),
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"use_video_port": fields.Boolean(missing=False),
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"bayer": fields.Boolean(
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missing=False, description="Store raw bayer data in file"
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),
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"annotations": fields.Dict(missing={}, example={"Client": "SwaggerUI"}),
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"tags": fields.List(fields.String, missing=[], example=["docs"]),
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"resize": fields.Dict(
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missing=None, example={"width": 640, "height": 480}
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), # TODO: Validate keys
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}
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schema = CaptureSchema()
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def post(self, args):
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"""
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Create a new capture
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"""
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microscope = find_component("org.openflexure.microscope")
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resize = args.get("resize", None)
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if resize:
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if ("width" in resize) and ("height" in resize):
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resize = (
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int(resize["width"]),
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int(resize["height"]),
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) # Convert dict to tuple
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else:
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abort(404)
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# Explicitally acquire lock (prevents empty files being created if lock is unavailable)
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with microscope.camera.lock:
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return microscope.capture(
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filename=args.get("filename"),
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temporary=args.get("temporary"),
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use_video_port=args.get("use_video_port"),
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resize=resize,
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bayer=args.get("bayer"),
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annotations=args.get("annotations"),
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tags=args.get("tags")
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)
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class RAMCaptureAPI(ActionView):
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"""
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Take a non-persistant image capture.
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"""
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args = {
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"use_video_port": fields.Boolean(missing=True),
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"bayer": fields.Boolean(
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missing=False, description="Return with raw bayer data"
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),
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"resize": fields.Dict(
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missing=None, example={"width": 640, "height": 480}
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), # TODO: Validate keys
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}
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responses = {
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200: {
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"content_type": "image/jpeg"
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}
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}
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def post(self, args):
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"""
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Take a non-persistant image capture.
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"""
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microscope = find_component("org.openflexure.microscope")
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resize = args.get("resize", None)
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if resize:
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if ("width" in resize) and ("height" in resize):
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resize = (
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int(resize["width"]),
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int(resize["height"]),
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) # Convert dict to tuple
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else:
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abort(404)
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# Open a BytesIO stream to be destroyed once request has returned
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with microscope.camera.lock, io.BytesIO() as stream:
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microscope.camera.capture(
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stream,
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use_video_port=args.get("use_video_port"),
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resize=resize,
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bayer=args.get("bayer"),
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)
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stream.seek(0)
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return send_file(io.BytesIO(stream.getbuffer()), mimetype="image/jpeg")
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class GPUPreviewStartAPI(ActionView):
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"""
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Start the onboard GPU preview.
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Optional "window" parameter can be passed to control the position and size of the preview window,
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in the format ``[x, y, width, height]``.
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"""
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args = {"window": fields.List(fields.Integer, missing=[], example=[0, 0, 640, 480])}
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def post(self, args):
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"""
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Start the onboard GPU preview.
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"""
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microscope = find_component("org.openflexure.microscope")
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window = args.get("window")
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logging.debug(window)
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if len(window) != 4:
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fullscreen = True
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window = None
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else:
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fullscreen = False
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window = [int(w) for w in window]
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microscope.camera.start_preview(fullscreen=fullscreen, window=window)
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# TODO: Make schema for microscope state
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return microscope.state
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class GPUPreviewStopAPI(ActionView):
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def post(self):
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"""
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Stop the onboard GPU preview.
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"""
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microscope = find_component("org.openflexure.microscope")
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microscope.camera.stop_preview()
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# TODO: Make schema for microscope state
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return microscope.state
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