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#!/usr/bin/env python |
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# Nat Morris (c) 2017 |
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"""CCTV GIF buffer - WebServer.""" |
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import cherrypy |
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import copy |
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import imageio |
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import io |
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from cctvgifbuffer import version |
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class WebServer(object): |
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service = None |
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def __init__(self, service): |
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self.service = service |
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@cherrypy.expose |
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def index(self): |
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return "cctv-gif-buffer v%s" % (version()) |
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@cherrypy.expose |
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def gif(self, camera, duration, interval): |
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# sanitize the parameters |
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if camera not in self.service.cameras.keys(): |
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raise cherrypy.HTTPError(404, "Camera not found") |
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duration = int(duration) |
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if duration != 60: |
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raise cherrypy.HTTPError(500, "Only 60 second duration is currently supported") |
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interval = float(interval) |
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valid_intervals = [0.25, 0.5, 1] |
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if interval not in valid_intervals: |
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raise cherrypy.HTTPError(500, "Support frame intervals are %s" % (valid_intervals)) |
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camobject = self.service.cameras[camera] |
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# obtain a temporary lock to copy the buffer |
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with camobject["lock"]: |
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x = copy.copy(camobject["buffer"]) |
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# generate the GIF |
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outbytes = imageio.mimsave(imageio.RETURN_BYTES, x, 'GIF', duration=interval) |
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# serve it to the user |
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cherrypy.response.headers['Content-Type'] = 'image/gif' |
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return io.BytesIO(outbytes) |
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def start(self): |
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cherrypy.config.update({'server.socket_port': 8080, |
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'server.socket_host': '0.0.0.0', |
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'engine.autoreload.on': False}) |
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cherrypy.quickstart(self) |
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natm /
cctv-gif-buffer
