291 lines
8.6 KiB
Python
291 lines
8.6 KiB
Python
# coding=utf-8
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__author__ = "Gina Häußge <osd@foosel.net>"
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__license__ = 'GNU Affero General Public License http://www.gnu.org/licenses/agpl.html'
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import logging
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import os
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import threading
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import urllib
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import time
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import subprocess
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import fnmatch
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import datetime
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import sys
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import octoprint.util as util
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from octoprint.settings import settings
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from octoprint.events import eventManager
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def getFinishedTimelapses():
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files = []
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basedir = settings().getBaseFolder("timelapse")
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for osFile in os.listdir(basedir):
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if not fnmatch.fnmatch(osFile, "*.mpg"):
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continue
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statResult = os.stat(os.path.join(basedir, osFile))
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files.append({
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"name": osFile,
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"size": util.getFormattedSize(statResult.st_size),
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"bytes": statResult.st_size,
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"date": util.getFormattedDateTime(datetime.datetime.fromtimestamp(statResult.st_ctime))
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})
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return files
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validTimelapseTypes = ["off", "timed", "zchange"]
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updateCallbacks = []
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def registerCallback(callback):
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if not callback in updateCallbacks:
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updateCallbacks.append(callback)
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def unregisterCallback(callback):
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if callback in updateCallbacks:
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updateCallbacks.remove(callback)
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def notifyCallbacks(timelapse):
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for callback in updateCallbacks:
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if timelapse is None:
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config = None
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else:
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config = timelapse.configData()
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try: callback.sendTimelapseConfig(config)
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except: pass
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class Timelapse(object):
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def __init__(self):
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self._logger = logging.getLogger(__name__)
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self._imageNumber = None
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self._inTimelapse = False
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self._gcodeFile = None
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self._captureDir = settings().getBaseFolder("timelapse_tmp")
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self._movieDir = settings().getBaseFolder("timelapse")
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self._snapshotUrl = settings().get(["webcam", "snapshot"])
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self._renderThread = None
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self._captureMutex = threading.Lock()
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# subscribe events
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eventManager().subscribe("PrintStarted", self.onPrintStarted)
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eventManager().subscribe("PrintFailed", self.onPrintDone)
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eventManager().subscribe("PrintDone", self.onPrintDone)
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eventManager().subscribe("PrintResumed", self.onPrintResumed)
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for (event, callback) in self.eventSubscriptions():
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eventManager().subscribe(event, callback)
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def unload(self):
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if self._inTimelapse:
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self.stopTimelapse(doCreateMovie=False)
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# unsubscribe events
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eventManager().unsubscribe("PrintStarted", self.onPrintStarted)
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eventManager().unsubscribe("PrintFailed", self.onPrintDone)
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eventManager().unsubscribe("PrintDone", self.onPrintDone)
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eventManager().unsubscribe("PrintResumed", self.onPrintResumed)
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for (event, callback) in self.eventSubscriptions():
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eventManager().unsubscribe(event, callback)
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def onPrintStarted(self, event, payload):
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"""
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Override this to perform additional actions upon start of a print job.
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"""
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self.startTimelapse(payload)
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def onPrintDone(self, event, payload):
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"""
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Override this to perform additional actions upon the stop of a print job.
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"""
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self.stopTimelapse()
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def onPrintResumed(self, event, payload):
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"""
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Override this to perform additional actions upon the pausing of a print job.
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"""
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if not self._inTimelapse:
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self.startTimelapse(payload)
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def eventSubscriptions(self):
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"""
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Override this method to subscribe to additional events by returning an array of (event, callback) tuples.
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Events that are already subscribed:
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* PrintStarted - self.onPrintStarted
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* PrintResumed - self.onPrintResumed
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* PrintFailed - self.onPrintDone
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* PrintDone - self.onPrintDone
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"""
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return []
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def configData(self):
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"""
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Override this method to return the current timelapse configuration data. The data should have the following
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form:
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type: "<type of timelapse>",
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options: { <additional options> }
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"""
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return None
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def startTimelapse(self, gcodeFile):
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self._logger.debug("Starting timelapse for %s" % gcodeFile)
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self.cleanCaptureDir()
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self._imageNumber = 0
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self._inTimelapse = True
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self._gcodeFile = os.path.basename(gcodeFile)
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def stopTimelapse(self, doCreateMovie=True):
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self._logger.debug("Stopping timelapse")
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if doCreateMovie:
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self._renderThread = threading.Thread(target=self._createMovie)
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self._renderThread.daemon = True
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self._renderThread.start()
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self._imageNumber = None
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self._inTimelapse = False
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def captureImage(self):
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if self._captureDir is None:
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self._logger.warn("Cannot capture image, capture directory is unset")
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return
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with self._captureMutex:
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filename = os.path.join(self._captureDir, "tmp_%05d.jpg" % (self._imageNumber))
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self._imageNumber += 1
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self._logger.debug("Capturing image to %s" % filename)
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captureThread = threading.Thread(target=self._captureWorker, kwargs={"filename": filename})
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captureThread.daemon = True
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captureThread.start()
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def _captureWorker(self, filename):
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eventManager().fire("CaptureStart", filename);
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urllib.urlretrieve(self._snapshotUrl, filename)
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self._logger.debug("Image %s captured from %s" % (filename, self._snapshotUrl))
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eventManager().fire("CaptureDone", filename);
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def _createMovie(self):
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ffmpeg = settings().get(["webcam", "ffmpeg"])
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bitrate = settings().get(["webcam", "bitrate"])
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if ffmpeg is None or bitrate is None:
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self._logger.warn("Cannot create movie, path to ffmpeg or desired bitrate is unset")
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return
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input = os.path.join(self._captureDir, "tmp_%05d.jpg")
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output = os.path.join(self._movieDir, "%s_%s.mpg" % (os.path.splitext(self._gcodeFile)[0], time.strftime("%Y%m%d%H%M%S")))
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# prepare ffmpeg command
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command = [
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ffmpeg, '-i', input, '-vcodec', 'mpeg2video', '-pix_fmt', 'yuv420p', '-r', '25', '-y', '-b:v', bitrate,
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'-f', 'vob']
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filters = []
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# flip video if configured
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if settings().getBoolean(["webcam", "flipH"]):
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filters.append('hflip')
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if settings().getBoolean(["webcam", "flipV"]):
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filters.append('vflip')
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# add watermark if configured
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watermarkFilter = None
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if settings().getBoolean(["webcam", "watermark"]):
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watermark = os.path.join(os.path.dirname(__file__), "static", "img", "watermark.png")
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if sys.platform == "win32":
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# Because ffmpeg hiccups on windows' drive letters and backslashes we have to give the watermark
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# path a special treatment. Yeah, I couldn't believe it either...
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watermark = watermark.replace("\\", "/").replace(":", "\\\\:")
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watermarkFilter = "movie=%s [wm]; [%%(inputName)s][wm] overlay=10:main_h-overlay_h-10" % watermark
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filterstring = None
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if len(filters) > 0:
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if watermarkFilter is not None:
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filterstring = "[in] %s [postprocessed]; %s [out]" % (",".join(filters), watermarkFilter % {"inputName": "postprocessed"})
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else:
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filterstring = "[in] %s [out]" % ",".join(filters)
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elif watermarkFilter is not None:
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filterstring = watermarkFilter % {"inputName": "in"} + " [out]"
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if filterstring is not None:
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self._logger.debug("Applying videofilter chain: %s" % filterstring)
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command.extend(["-vf", filterstring])
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# finalize command with output file
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self._logger.debug("Rendering movie to %s" % output)
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command.append(output)
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try:
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subprocess.check_call(command)
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eventManager().fire("MovieDone", output)
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except subprocess.CalledProcessError as (e):
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self._logger.warn("Could not render movie, got return code %r" % e.returncode)
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def cleanCaptureDir(self):
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if not os.path.isdir(self._captureDir):
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self._logger.warn("Cannot clean capture directory, it is unset")
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return
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for filename in os.listdir(self._captureDir):
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if not fnmatch.fnmatch(filename, "*.jpg"):
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continue
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os.remove(os.path.join(self._captureDir, filename))
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class ZTimelapse(Timelapse):
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def __init__(self):
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Timelapse.__init__(self)
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self._logger.debug("ZTimelapse initialized")
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def eventSubscriptions(self):
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return [
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("ZChange", self._onZChange)
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]
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def configData(self):
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return {
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"type": "zchange"
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}
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def _onZChange(self, event, payload):
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self.captureImage()
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class TimedTimelapse(Timelapse):
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def __init__(self, interval=1):
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Timelapse.__init__(self)
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self._interval = interval
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if self._interval < 1:
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self._interval = 1 # force minimum interval of 1s
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self._timerThread = None
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self._logger.debug("TimedTimelapse initialized")
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def interval(self):
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return self._interval
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def configData(self):
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return {
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"type": "timed",
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"options": {
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"interval": self._interval
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}
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}
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def onPrintStarted(self, event, payload):
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Timelapse.onPrintStarted(self, event, payload)
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if self._timerThread is not None:
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return
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self._timerThread = threading.Thread(target=self._timerWorker)
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self._timerThread.daemon = True
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self._timerThread.start()
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def onPrintDone(self, event, payload):
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Timelapse.onPrintDone(self, event, payload)
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self._timerThread = None
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def _timerWorker(self):
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self._logger.debug("Starting timer for interval based timelapse")
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while self._inTimelapse:
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self.captureImage()
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time.sleep(self._interval)
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