107 lines
2.9 KiB
Python
Executable file
107 lines
2.9 KiB
Python
Executable file
#!/usr/bin/python
|
|
"""This is a udp / binary version of PixelFlut
|
|
|
|
Inspired by the PixelFlut beamer on eth0:winter 2016 and
|
|
code from https://github.com/defnull/pixelflut/
|
|
"""
|
|
|
|
__version__ = 0.2
|
|
__author__ = "Jan Klopper <jan@underdark.nl>"
|
|
|
|
import pygame
|
|
import struct
|
|
import time
|
|
from gevent import spawn, socket, monkey
|
|
from gevent.server import DatagramServer
|
|
from gevent.queue import Queue
|
|
|
|
monkey.patch_all()
|
|
UDP_IP = "127.0.0.1"
|
|
UDP_PORT= 5005
|
|
|
|
def main():
|
|
"""Runs a pixelvloed server"""
|
|
PixelVloed(':%d' %(UDP_PORT)).serve_forever()
|
|
|
|
class Canvas(object):
|
|
"""PixelVloed server class"""
|
|
|
|
def __init__(self, queue, debug=False):
|
|
"""Init the pixelVloed server"""
|
|
self.debug = debug
|
|
self.pixeloffset = 2
|
|
self.fps = 30
|
|
self.screen = None
|
|
self.udp_ip = UDP_IP
|
|
self.udp_port = UDP_PORT
|
|
self.canvas()
|
|
self.set_title()
|
|
self.queue = queue
|
|
|
|
@staticmethod
|
|
def set_title(text=None):
|
|
"""Sets the window title"""
|
|
title = 'PixelVloed %0.02f' % __version__
|
|
if text:
|
|
title += ' ' + text
|
|
pygame.display.set_caption(title)
|
|
|
|
def canvas(self, width=1366, height=768):
|
|
"""Init the pygame canvas"""
|
|
pygame.init()
|
|
self.screen = pygame.display.set_mode((width, height))
|
|
|
|
def clear(self, r=0, g=0, b=0): # pylint: disable=C0103
|
|
""" Fill the entire screen with a solid colour (default: black)"""
|
|
self.screen.fill((r, g, b))
|
|
|
|
def Pixel(self, x, y, r, g, b, a=255): # pylint: disable=C0103
|
|
"""Print a pixel to the screen"""
|
|
self.screen.set_at((x, y), (r, g, b, a))
|
|
|
|
def CanvasUpdate(self):
|
|
"""Updates the screen according to self.fps"""
|
|
lasttime = time.time()
|
|
while True:
|
|
currenttime = time.time()
|
|
self.Draw()
|
|
if currenttime - lasttime >= 1 / self.fps:
|
|
pygame.display.flip()
|
|
lasttime = time.time()
|
|
|
|
def Draw(self):
|
|
"""Draws pixels specified in the received packages in the queue"""
|
|
try:
|
|
data = self.queue.get()
|
|
except:
|
|
raise
|
|
else:
|
|
preamble = struct.unpack_from("<?", data)[0]
|
|
protocol = struct.unpack_from("<B", data, 1)[0]
|
|
pixellength = 7 #xx,yy,r,g,b
|
|
if preamble:
|
|
pixellength = 8 #xx,yy,r,g,b,a
|
|
pixelcount = (len(data)-1) / pixellength
|
|
if self.debug:
|
|
print '%d pixels received, protocol V %d ' % (pixelcount, protocol)
|
|
for i in xrange(0, pixelcount):
|
|
pixel = struct.unpack_from(
|
|
("<2H4B" if preamble else "<2H3B"),
|
|
data,
|
|
self.pixeloffset + (i*pixellength))
|
|
if self.debug:
|
|
print pixel
|
|
self.Pixel(*pixel)
|
|
|
|
class PixelVloed(DatagramServer):
|
|
"""PixelVloed server class"""
|
|
queue = Queue()
|
|
pixelcanvas = Canvas(queue)
|
|
__request_processing_greenlet = spawn(pixelcanvas.CanvasUpdate)
|
|
|
|
def handle(self, data, address):
|
|
"""Is called by the DataGramServer whenever a package is received"""
|
|
self.queue.put(data)
|
|
|
|
if __name__ == '__main__':
|
|
main()
|