Using Python and Pygame to Display A Motion JPEG From the TRENDnet Wireless Internet Camera

1:  import time  
2:  import httplib  
3:  import base64  
4:  import StringIO  
5:  import pygame  
6:  from pygame.locals import *  
7:    
8:  class trendnet:  
9:    
10:      def __init__(self, ip, username='admin', password='admin'):  
11:    
12:          self.ip = ip  
13:          self.username = username  
14:          self.password = password  
15:          self.base64string = base64.encodestring('%s:%s' % (username, password))[:-1]  
16:    
17:      def connect(self):  
18:    
19:          h = httplib.HTTP(self.ip)  
20:          h.putrequest('GET','/cgi/mjpg/mjpeg.cgi')  
21:          h.putheader('Authorization', 'Basic %s' % self.base64string)  
22:          h.endheaders()  
23:          errcode, errmsg, headers = h.getreply()  
24:          self.file = h.getfile()  
25:    
26:      def update(self, window, size, offset):          
27:            
28:          data = self.file.readline()  
29:          if data[0:15] == 'Content-Length:':  
30:              count = int(data[16:])  
31:              s = self.file.read(count)      
32:              while s[0] != chr(0xff):  
33:                  s = s[1:]       
34:                    
35:              p = StringIO.StringIO(s)  
36:                
37:              try:  
38:                  campanel = pygame.image.load(p).convert()  
39:                  campanel = pygame.transform.scale(campanel, size)  
40:                  window.blit(campanel, offset)  
41:            
42:              except Exception, x:  
43:                  print x  
44:                    
45:              p.close()  
46:                
47:  if __name__ == '__main__':  
48:    
49:    pygame.init()  
50:    screen = pygame.display.set_mode((660,500), 0, 32)  
51:      
52:    pygame.display.set_caption('trendnet.py')  
53:      
54:    background = pygame.Surface((660,500))  
55:    background.fill(pygame.Color('#E8E8E8'))  
56:    screen.blit(background, (0,0))  
57:      
58:    camera = trendnet('192.168.1.103', 'admin', 'admin')  
59:    camera.connect()  
60:      
61:    while True:  
62:      
63:      camera.update(screen, (640,480), (10,10))  
64:      pygame.display.update()  
65:      
66:      for event in pygame.event.get():  
67:        if event.type == QUIT:  
68:          sys.exit(0)  
69:            
70:      time.sleep(.01)  

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