142 lines
5.4 KiB
Python
142 lines
5.4 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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class Worker(QtCore.QObject):
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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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parent.videoTask.connect(self.createVideo)
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@pyqtSlot(str, str, str, list)
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def createVideo(self, backgroundImage, inputFile, outputFile, components):
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# print('worker thread id: {}'.format(QtCore.QThread.currentThreadId()))
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def getBackgroundAtIndex(i):
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return self.core.drawBaseImage(backgroundFrames[i])
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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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backgroundFrames = self.core.parseBaseImage(backgroundImage)
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if len(backgroundFrames) < 2:
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# the base image is not a video so we can draw it now
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imBackground = 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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imBackground = None
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self.progressBarSetText.emit('Loading audio file…')
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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 = [ 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', self.core.settings.value('outputWidth')+'x'+self.core.settings.value('outputHeight'), # size of one frame
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'-pix_fmt', 'rgb24',
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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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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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out_pipe = sp.Popen(ffmpegCommand,
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stdin=sp.PIPE,stdout=sys.stdout, stderr=sys.stdout)
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# initialize components
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print('######################## Data')
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print('loaded components:',
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["%s%s" % (num, str(component)) for num, component in enumerate(components)])
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staticComponents = {}
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sampleSize = 1470
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for compNo, comp in enumerate(components):
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properties = None
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properties = comp.preFrameRender(worker=self, completeAudioArray=completeAudioArray, sampleSize=sampleSize)
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if properties and 'static' in properties:
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staticComponents[compNo] = None
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# create video for output
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numpy.seterr(divide='ignore')
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frame = getBackgroundAtIndex(0)
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bgI = 0
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for i in range(0, len(completeAudioArray), sampleSize):
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newFrame = Image.new("RGBA", (int(self.core.settings.value('outputWidth')), int(self.core.settings.value('outputHeight'))),(0,0,0,255))
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if imBackground:
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newFrame.paste(imBackground)
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else:
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newFrame.paste(getBackgroundAtIndex(bgI))
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# composite all frames returned by the components in order
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for compNo, comp in enumerate(components):
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if compNo in staticComponents and staticComponents[compNo] != None:
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newFrame = Image.alpha_composite(newFrame,staticComponents[compNo])
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else:
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newFrame = Image.alpha_composite(newFrame,comp.frameRender(compNo, i))
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if i == 0 and compNo in staticComponents:
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staticComponents[compNo] = comp.frameRender(compNo, i)
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if not imBackground:
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# increment background video frame for next iteration
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if bgI < len(backgroundFrames)-1:
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bgI += 1
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# write to out_pipe
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try:
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frame = Image.new("RGB", (int(self.core.settings.value('outputWidth')), int(self.core.settings.value('outputHeight'))),(0,0,0))
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frame.paste(newFrame)
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out_pipe.stdin.write(frame.tobytes())
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finally:
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True
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# increase progress bar value
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if progressBarValue + 1 <= (i / len(completeAudioArray)) * 100:
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progressBarValue = numpy.floor((i / len(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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out_pipe.stdin.close()
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if out_pipe.stderr is not None:
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print(out_pipe.stderr.read())
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out_pipe.stderr.close()
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# out_pipe.terminate() # don't terminate ffmpeg too early
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out_pipe.wait()
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print("Video file created")
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self.core.deleteTempDir()
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self.progressBarUpdate.emit(100)
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self.progressBarSetText.emit('100%')
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self.videoCreated.emit()
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