def main():
# Make sure we have enough stuff
if len(sys.argv) < 3:
print('Usage:')
print(' ./gif2blit.py <gif> <output_dir>')
sys.exit(0)
# Need to make the QApp first
app = QApplication(sys.argv)
# Assume that all of the input is valid
gifName = sys.argv[1]
outputDirName = sys.argv[2]
# Open of the animated GIF
gif = QMovie(gifName)
# Make the directory if it doesn't exist
if not os.path.exists(outputDirName):
os.makedirs(outputDirName)
# Build the strucutres, get some data
xsheet = XSheet(fps=50)
anim = Animation(xsheet=xsheet,
name=os.path.basename(gifName),
created=time.ctime())
frameCount = gif.frameCount()
msDelayPerFrame = 1000 // xsheet.fps()
timingOff = False
filename = ''
# Start the loop, but just look at the first frame so we can get the size
gif.jumpToNextFrame()
anim.setSize(gif.currentImage().size())
# Add all of the frames together
for i in range(0, frameCount):
# Make the new frame and add it
f = Frame()
c = Cel(gif.currentImage().convertToFormat(
QImage.Format_ARGB32_Premultiplied))
f.setHold(gif.nextFrameDelay() // msDelayPerFrame)
f.addCel(c)
xsheet.addFrame(f)
# Save images as we go along
try:
filename = os.path.join(outputDirName, '%s.png' % c.UUID())
c.image().save(filename)
print(filename)
except:
print('There was an error in trying to save a Cel to:\n %s' %
filename)
sys.exit(1)
# Checking for not so good shifts in timing
if (gif.nextFrameDelay() % msDelayPerFrame) != 0:
timingOff = True
# Dump it
gif.jumpToNextFrame()
# And save the JSON, then we're done
try:
filename = os.path.join(outputDirName, 'sequence.json')
f = open(filename, 'w')
f.write(structToJSON(animationToJSONStruct(anim)))
f.close()
except:
print('There was an error in tyring to save the JSON file to:\n %s' %
filename)
sys.exit(1)
# Metrics:
print('Converted a GIF with %i frames.' % xsheet.numFrames())
if timingOff:
print(
'Because of the set FPS and the delay of the frames in the GIF, the timing might be off in the converted animation.'
)
