264 lines
9.4 KiB
Python
264 lines
9.4 KiB
Python
from PyQt4 import QtCore, QtGui, uic
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from PyQt4.QtCore import pyqtSignal, pyqtSlot
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from PIL import Image, ImageDraw, ImageFont
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from PIL.ImageQt import ImageQt
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import core
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import numpy
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import subprocess as sp
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import sys
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import os
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from queue import Queue, PriorityQueue
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from threading import Thread
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import time
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from copy import copy
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import signal
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class Worker(QtCore.QObject):
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imageCreated = pyqtSignal(['QImage'])
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videoCreated = pyqtSignal()
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progressBarUpdate = pyqtSignal(int)
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progressBarSetText = pyqtSignal(str)
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def __init__(self, parent=None):
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QtCore.QObject.__init__(self)
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self.core = core.Core()
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self.core.settings = parent.settings
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self.modules = parent.modules
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self.stackedWidget = parent.window.stackedWidget
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self.parent = parent
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parent.videoTask.connect(self.createVideo)
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self.sampleSize = 1470
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self.canceled = False
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self.error = False
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def renderNode(self):
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while True:
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i = self.compositeQueue.get()
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if self.imBackground is not None:
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frame = self.imBackground
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else:
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frame = self.getBackgroundAtIndex(i[1])
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for compNo, comp in enumerate(self.components):
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if compNo in self.staticComponents and self.staticComponents[compNo] != None:
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frame = Image.alpha_composite(frame, self.staticComponents[compNo])
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else:
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frame = Image.alpha_composite(frame, comp.frameRender(compNo, i[0]))
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# frame.paste(compFrame, mask=compFrame)
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self.renderQueue.put([i[0], frame])
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self.compositeQueue.task_done()
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def renderDispatch(self):
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print('Dispatching Frames for Compositing...')
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if not self.imBackground:
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# increment background video frame for next iteration
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if self.bgI < len(self.backgroundFrames)-1 and i != 0:
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self.bgI += 1
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for i in range(0, len(self.completeAudioArray), self.sampleSize):
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self.compositeQueue.put([i, self.bgI])
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self.compositeQueue.join()
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print('Compositing Complete.')
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def previewDispatch(self):
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while True:
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i = self.previewQueue.get()
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if time.time() - self.lastPreview >= 0.06 or i[0] == 0:
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self._image = ImageQt(i[1])
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self.imageCreated.emit(QtGui.QImage(self._image))
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self.lastPreview = time.time()
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self.previewQueue.task_done()
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def getBackgroundAtIndex(self, i):
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background = Image.new(
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"RGBA",
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(self.width, self.height),
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(0, 0, 0, 255)
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)
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layer = self.core.drawBaseImage(self.backgroundFrames[i])
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background.paste(layer)
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return background
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@pyqtSlot(str, str, str, list)
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def createVideo(self, backgroundImage, inputFile, outputFile, components):
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self.components = components
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self.outputFile = outputFile
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self.reset()
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self.width = int(self.core.settings.value('outputWidth'))
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self.height = int(self.core.settings.value('outputHeight'))
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# print('worker thread id: {}'.format(QtCore.QThread.currentThreadId()))
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progressBarValue = 0
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self.progressBarUpdate.emit(progressBarValue)
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self.progressBarSetText.emit('Loading background image…')
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self.backgroundImage = backgroundImage
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self.backgroundFrames = self.core.parseBaseImage(backgroundImage)
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if len(self.backgroundFrames) < 2:
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# the base image is not a video so we can draw it now
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self.imBackground = self.getBackgroundAtIndex(0)
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else:
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# base images will be drawn while drawing the audio bars
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self.imBackground = None
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self.bgI = 0
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self.progressBarSetText.emit('Loading audio file…')
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self.completeAudioArray = self.core.readAudioFile(inputFile)
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# test if user has libfdk_aac
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encoders = sp.check_output(self.core.FFMPEG_BIN + " -encoders -hide_banner", shell=True)
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acodec = self.core.settings.value('outputAudioCodec')
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if b'libfdk_aac' in encoders and acodec == 'aac':
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acodec = 'libfdk_aac'
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ffmpegCommand = [
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self.core.FFMPEG_BIN,
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'-y', # (optional) means overwrite the output file if it already exists.
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'-f', 'rawvideo',
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'-vcodec', 'rawvideo',
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'-s', str(self.width)+'x'+str(self.height), # size of one frame
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'-pix_fmt', 'rgba',
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'-r', self.core.settings.value('outputFrameRate'), # frames per second
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'-i', '-', # The input comes from a pipe
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'-an',
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'-i', inputFile,
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'-acodec', acodec, # output audio codec
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'-b:a', self.core.settings.value('outputAudioBitrate'),
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'-vcodec', self.core.settings.value('outputVideoCodec'),
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'-pix_fmt', self.core.settings.value('outputVideoFormat'),
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'-preset', self.core.settings.value('outputPreset'),
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'-f', self.core.settings.value('outputFormat')
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]
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if acodec == 'aac':
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ffmpegCommand.append('-strict')
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ffmpegCommand.append('-2')
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ffmpegCommand.append(outputFile)
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self.out_pipe = sp.Popen(ffmpegCommand, stdin=sp.PIPE,stdout=sys.stdout, stderr=sys.stdout)
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# create video for output
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numpy.seterr(divide='ignore')
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# initialize components
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print('loaded components:',
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["%s%s" % (num, str(component)) for num, component in enumerate(self.components)])
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self.staticComponents = {}
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for compNo, comp in enumerate(self.components):
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properties = None
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properties = comp.preFrameRender(
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worker=self,
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completeAudioArray=self.completeAudioArray,
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sampleSize=self.sampleSize,
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)
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if properties and 'static' in properties:
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self.staticComponents[compNo] = copy(comp.frameRender(compNo, 0))
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self.compositeQueue = Queue()
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self.compositeQueue.maxsize = 20
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self.renderQueue = PriorityQueue()
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self.renderQueue.maxsize = 20
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self.previewQueue = PriorityQueue()
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# create threads to render frames and send them back here for piping out
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for i in range(3):
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t = Thread(target=self.renderNode, name="Render Thread")
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t.daemon = True
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t.start()
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self.dispatchThread = Thread(target=self.renderDispatch, name="Render Dispatch Thread")
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self.dispatchThread.daemon = True
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self.dispatchThread.start()
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self.previewDispatch = Thread(target=self.previewDispatch, name="Render Dispatch Thread")
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self.previewDispatch.daemon = True
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self.previewDispatch.start()
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frameBuffer = {}
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self.lastPreview = 0.0
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if not self.canceled:
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for i in range(0, len(self.completeAudioArray), self.sampleSize):
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while True:
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if i in frameBuffer:
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# if frame's in buffer, pipe it to ffmpeg
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break
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# else fetch the next frame & add to the buffer
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data = self.renderQueue.get()
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frameBuffer[data[0]] = data[1]
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self.renderQueue.task_done()
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try:
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self.out_pipe.stdin.write(frameBuffer[i].tobytes())
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self.previewQueue.put([i, frameBuffer[i]])
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del frameBuffer[i]
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except:
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break
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# increase progress bar value
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if progressBarValue + 1 <= (i / len(self.completeAudioArray)) * 100:
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progressBarValue = numpy.floor((i / len(self.completeAudioArray)) * 100)
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self.progressBarUpdate.emit(progressBarValue)
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self.progressBarSetText.emit('%s%%' % str(int(progressBarValue)))
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numpy.seterr(all='print')
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self.out_pipe.stdin.close()
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if self.out_pipe.stderr is not None:
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print(self.out_pipe.stderr.read())
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self.out_pipe.stderr.close()
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self.error = True
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# out_pipe.terminate() # don't terminate ffmpeg too early
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self.out_pipe.wait()
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if self.canceled:
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print("Export Canceled")
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try:
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os.remove(self.outputFile)
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except:
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pass
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self.progressBarUpdate.emit(0)
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self.progressBarSetText.emit('Export Canceled')
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else:
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if self.error:
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print("Export Failed")
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self.progressBarUpdate.emit(0)
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self.progressBarSetText.emit('Export Failed')
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else:
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print("Export Complete")
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self.progressBarUpdate.emit(100)
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self.progressBarSetText.emit('Export Complete')
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self.error = False
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self.canceled = False
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self.parent.drawPreview()
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self.core.deleteTempDir()
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self.videoCreated.emit()
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def cancel(self):
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self.canceled = True
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self.core.cancel()
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for comp in self.components:
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comp.cancel()
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try:
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self.out_pipe.send_signal(signal.SIGINT)
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except:
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pass
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def reset(self):
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self.core.reset()
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self.canceled = False
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for comp in self.components:
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comp.reset()
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