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