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from PIL import Image, ImageDraw
from PyQt4 import uic, QtGui, QtCore
import os, subprocess
from . import __base__
class Component(__base__.Component):
'''Video'''
def __init__(self):
super().__init__()
self.working = False
def widget(self, parent):
self.parent = parent
self.settings = parent.settings
page = uic.loadUi(os.path.join(os.path.dirname(os.path.realpath(__file__)), 'video.ui'))
self.videoPath = ''
self.x = 0
self.y = 0
page.lineEdit_video.textChanged.connect(self.update)
page.pushButton_video.clicked.connect(self.pickVideo)
self.page = page
return page
def update(self):
self.videoPath = self.page.lineEdit_video.text()
self.parent.drawPreview()
def previewRender(self, previewWorker):
self.width = int(previewWorker.core.settings.value('outputWidth'))
self.height = int(previewWorker.core.settings.value('outputHeight'))
frame1 = self.getPreviewFrame()
if not hasattr(self, 'staticFrame') or not self.working and frame1:
frame = Image.new("RGBA", (self.width, self.height), (0, 0, 0, 0))
if frame1:
im = Image.open(frame1)
im = self.resize(im)
frame.paste(im)
if not self.working:
self.staticFrame = frame
return self.staticFrame
def preFrameRender(self, **kwargs):
super().preFrameRender(**kwargs)
self.width = int(self.worker.core.settings.value('outputWidth'))
self.height = int(self.worker.core.settings.value('outputHeight'))
self.frames = self.getVideoFrames()
self.working = True
def frameRender(self, moduleNo, arrayNo, frameNo):
print(frameNo)
try:
if frameNo < len(self.frames)-1:
self.staticFrame = Image.new("RGBA", (self.width, self.height), (0, 0, 0, 0))
im = Image.open(self.frames[frameNo])
im = self.resize(im)
self.staticFrame.paste(im)
except FileNotFoundError:
print("Video component encountered an error")
self.frames = []
return self.staticFrame
def loadPreset(self, pr):
self.page.lineEdit_video.setText(pr['video'])
def savePreset(self):
return {
'video' : self.videoPath,
}
def pickVideo(self):
imgDir = self.settings.value("backgroundDir", os.path.expanduser("~"))
filename = QtGui.QFileDialog.getOpenFileName(self.page,
"Choose Video", imgDir, "Video Files (*.mp4)")
if filename:
self.settings.setValue("backgroundDir", os.path.dirname(filename))
self.page.lineEdit_video.setText(filename)
self.update()
def getPreviewFrame(self):
if not self.videoPath:
return
name = os.path.basename(self.videoPath).split('.', 1)[0]
filename = 'preview%s.jpg' % name
if os.path.exists(os.path.join(self.parent.core.tempDir, filename)):
# no, we don't need a new preview frame
return False
# get a preview frame
subprocess.call( \
'%s -i "%s" -y %s "%s"' % ( \
self.parent.core.FFMPEG_BIN,
self.videoPath,
'-ss 10 -vframes 1',
os.path.join(self.parent.core.tempDir, filename)
),
shell=True
)
print('### Got Preview Frame From %s ###' % name)
return os.path.join(self.parent.core.tempDir, filename)
def getVideoFrames(self):
# FIXME: make cancellable, report status to user, etc etc etc
if not self.videoPath:
return
command = [
self.parent.core.FFMPEG_BIN,
'-i', self.videoPath,
'-f', 'image2pipe',
'-vcodec', 'rawvideo', '-',
'-pix_fmt', 'rgba',
]
# pipe in video frames from ffmpeg
in_pipe = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, bufsize=8**10)
# maybe bufsize=4*self.width*self.height+100 ?
chunk = 4*self.width*self.height
frames = []
while True:
byteFrame = in_pipe.stdout.read(chunk)
if len(byteFrame) == 0:
break
img = Image.frombytes('RGBA', (self.width, self.height), byteFrame, 'raw', 'RGBa')
frames.append(img)
return frames
def resize(self, im):
if im.size != (self.width, self.height):
im = im.resize((self.width, self.height), Image.ANTIALIAS)
return im
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