148 lines
5.4 KiB
Python
148 lines
5.4 KiB
Python
from PIL import Image, ImageDraw
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from PyQt4 import uic, QtGui, QtCore
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import os, subprocess, threading
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from queue import PriorityQueue
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from . import __base__
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class Video:
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'''Video Component Frame-Fetcher'''
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def __init__(self, ffmpeg, videoPath, width, height, frameRate, chunkSize, parent, loopVideo):
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self.parent = parent
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self.chunkSize = chunkSize
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self.size = (width, height)
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self.frameNo = -1
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self.currentFrame = 'None'
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if loopVideo:
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self.loopValue = '-1'
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else:
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self.loopValue = '0'
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self.command = [
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ffmpeg,
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'-thread_queue_size', '512',
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'-r', frameRate,
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'-stream_loop', self.loopValue,
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'-i', videoPath,
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'-f', 'image2pipe',
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'-pix_fmt', 'rgba',
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'-filter:v', 'scale='+str(width)+':'+str(height),
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'-vcodec', 'rawvideo', '-',
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]
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self.frameBuffer = PriorityQueue()
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self.frameBuffer.maxsize = int(frameRate)
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self.finishedFrames = {}
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self.thread = threading.Thread(target=self.fillBuffer, name=self.__doc__)
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self.thread.daemon = True
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self.thread.start()
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def frame(self, num):
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while True:
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if num in self.finishedFrames:
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image = self.finishedFrames.pop(num)
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return Image.frombytes('RGBA', self.size, image)
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i, image = self.frameBuffer.get()
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self.finishedFrames[i] = image
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self.frameBuffer.task_done()
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def fillBuffer(self):
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self.pipe = subprocess.Popen(self.command, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, bufsize=10**8)
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while True:
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if self.parent.canceled:
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break
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self.frameNo += 1
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# If we run out of frames, use the last good frame and loop.
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if len(self.currentFrame) == 0:
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self.frameBuffer.put((self.frameNo-1, self.lastFrame))
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continue
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self.currentFrame = self.pipe.stdout.read(self.chunkSize)
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#print('creating frame #%s' % str(self.frameNo))
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if len(self.currentFrame) != 0:
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self.frameBuffer.put((self.frameNo, self.currentFrame))
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self.lastFrame = self.currentFrame
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class Component(__base__.Component):
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'''Video'''
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def widget(self, parent):
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self.parent = parent
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self.settings = parent.settings
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page = uic.loadUi(os.path.join(os.path.dirname(os.path.realpath(__file__)), 'video.ui'))
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self.videoPath = ''
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self.x = 0
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self.y = 0
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self.loopVideo = False
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page.lineEdit_video.textChanged.connect(self.update)
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page.pushButton_video.clicked.connect(self.pickVideo)
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page.checkBox_loop.stateChanged.connect(self.update)
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self.page = page
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return page
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def update(self):
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self.videoPath = self.page.lineEdit_video.text()
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self.loopVideo = self.page.checkBox_loop.isChecked()
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self.parent.drawPreview()
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def previewRender(self, previewWorker):
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width = int(previewWorker.core.settings.value('outputWidth'))
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height = int(previewWorker.core.settings.value('outputHeight'))
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self.chunkSize = 4*width*height
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frame = self.getPreviewFrame(width, height)
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if not frame:
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return Image.new("RGBA", (width, height),(0,0,0,0))
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else:
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return frame
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def preFrameRender(self, **kwargs):
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super().preFrameRender(**kwargs)
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width = int(self.worker.core.settings.value('outputWidth'))
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height = int(self.worker.core.settings.value('outputHeight'))
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self.chunkSize = 4*width*height
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self.video = Video(self.parent.core.FFMPEG_BIN, self.videoPath,
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width, height, self.settings.value("outputFrameRate"),
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self.chunkSize, self.parent, self.loopVideo)
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def frameRender(self, moduleNo, arrayNo, frameNo):
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return self.video.frame(frameNo)
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def loadPreset(self, pr):
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self.page.lineEdit_video.setText(pr['video'])
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def savePreset(self):
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return {
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'video' : self.videoPath,
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}
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def pickVideo(self):
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imgDir = self.settings.value("backgroundDir", os.path.expanduser("~"))
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filename = QtGui.QFileDialog.getOpenFileName(self.page,
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"Choose Video", imgDir, "Video Files (*.mp4 *.mov)")
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if filename:
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self.settings.setValue("backgroundDir", os.path.dirname(filename))
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self.page.lineEdit_video.setText(filename)
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self.update()
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def getPreviewFrame(self, width, height):
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if not self.videoPath or not os.path.exists(self.videoPath):
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return
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command = [
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self.parent.core.FFMPEG_BIN,
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'-thread_queue_size', '512',
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'-i', self.videoPath,
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'-f', 'image2pipe',
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'-pix_fmt', 'rgba',
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'-filter:v', 'scale='+str(width)+':'+str(height),
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'-vcodec', 'rawvideo', '-',
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'-ss', '90',
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'-vframes', '1',
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]
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pipe = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, bufsize=10**8)
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byteFrame = pipe.stdout.read(self.chunkSize)
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image = Image.frombytes('RGBA', (width, height), byteFrame)
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pipe.stdout.close()
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pipe.kill()
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return image
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