Soldato
Ive copied and altered some code i found on the web to enable me to take the stream from my IP Camera (video.cgi) and display it in a window.
The program is working fine and displaying the video from the camera apart from im getting errors in python.
The errors are:-
Corrupt JPEG data: X extraneous bytes before marker 0xd9
The 'X' is either '1' or '2' and i get loads of these errors even though the
video picture is not corrupt.
Here's the code below (missing ip address etc)
Im sure the error is occurring in the line:-
img = wx.ImageFromStream(stream)
Can anyone help me out with what the problem is and fix the code ????
The program is working fine and displaying the video from the camera apart from im getting errors in python.
The errors are:-
Corrupt JPEG data: X extraneous bytes before marker 0xd9
The 'X' is either '1' or '2' and i get loads of these errors even though the
video picture is not corrupt.
Here's the code below (missing ip address etc)
Im sure the error is occurring in the line:-
img = wx.ImageFromStream(stream)
Can anyone help me out with what the problem is and fix the code ????
Code:
import httplib
import base64
import StringIO
import threading
import time
import wx
class Trendnet():
def __init__(self, ip='1.1.1.1', username='admin', password='admin'):
self.IP = ip
self.Username = username
self.Password = password
self.Connected = False
def Connect(self):
if self.Connected == False:
try:
print 'Atempting to connect to camera', self.IP, self.Username, self.Password
h = httplib.HTTP(self.IP)
h.putrequest('GET','/video.cgi')
h.putheader('Authorization', 'Basic %s' % base64.encodestring('%s:%s' % (self.Username, self.Password))[:-1])
h.endheaders()
errcode, errmsg, headers = h.getreply()
self.File = h.getfile()
print 'Connected!'
self.Connected = True
except:
print 'Unable to connect!'
self.Connected = False
def Disconnect(self):
self.Connected = False
print 'Camera Disconnected!'
def Update(self):
if self.Connected:
s = self.File.readline() # '--myboundry'
s = self.File.readline() # 'Content-Length: #####'
framesize = int(s[16:])
s = self.File.read(framesize) # jpeg data
while s[0] != chr(0xff): # stripp off some junk in front
s = s[1:] # of the jpeg
return StringIO.StringIO(s)
class CameraPanel(wx.Panel):
def __init__(self, parent, camera):
wx.Panel.__init__(self, parent, id=wx.ID_ANY, style=wx.SIMPLE_BORDER)
self.Camera = camera
self.Bind(wx.EVT_PAINT, self.OnPaint)
self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
def OnEraseBackground(self, event):
pass
def OnPaint(self, event):
dc = wx.BufferedPaintDC(self)
if self.Camera.Connected == True:
try:
stream = self.Camera.Update()
if stream != None:
img = wx.ImageFromStream(stream)
bmp = wx.BitmapFromImage(img)
dc.DrawBitmap(bmp, 0, 0, True)
except:
pass
else:
pass
Last edited:
