Question

我正在做一个带有python套接字的客户端服务器程序，以通过Stream中的TCP视频协议从客户端传输到服务器。此过程在以Tkinter按钮开头的辅助线程内部。问题是按钮保持按下状态，并且在画布上显示图像时，如果它们没有加载，则不会出现明显的变化。我一直在阅读，显然您必须使用一个名为“ Queue”的库，但是它不会在我的代码中实现。

  # Import libraries
import threading
import SocketServer
import socket
import PIL.Image, PIL.ImageTk
import cv2
import numpy as np
import math
from Tkinter import*

# Config vars
server_ip = '192.168.1.36'
server_port = 8000
image_fps = 24 
title = "Proyect 1"




def init_server (server):
    server.init_server(server_ip,server_port)


#-------root and frame-----------#
root = Tk()
root.title(title)
myFrame = Frame(root,width="600",height="600")
root.resizable(False, False)
myFrame.pack()
#------------Labels--------------#
lTitle = Label(myFrame,text="Proyect 1.0",fg="gray")
lTitle.grid(row=0, column= 0, pady= 10, padx = 10)
#------------canvas--------------#
canvas = Canvas(myFrame,bg="gray",width=400, height=400)
canvas.grid(row=2,column=0, pady=0, padx=10)
#----------Main loop------------#


def setFrame (frame):

    photo = PIL.ImageTk.PhotoImage(image = PIL.Image.fromarray(frame))
    canvas.create_image(0, 0, image = photo, anchor = NW)


# Class to handle the jpeg video stream received from client
class VideoStreamHandler(SocketServer.StreamRequestHandler):
    def handle(self):
    stream_bytes = b' '
    # stream video frames one by one
    try:
        while True:
            stream_bytes += self.rfile.read(1024)

            first = stream_bytes.find(b'\xff\xd8')
            last = stream_bytes.find(b'\xff\xd9')
            if first != -1 and last != -1:
                jpg = stream_bytes[first:last+2]
                stream_bytes = stream_bytes[last+2:]
                #gray = cv2.imdecode(np.fromstring(jpg, dtype=np.uint8), cv2.IMREAD_GRAYSCALE)
                image = cv2.imdecode(np.fromstring(jpg, dtype=np.uint8), cv2.IMREAD_UNCHANGED)

                # lower half of the image
                #half_gray = gray[120:240, :]

                # Mostramos imagenes
            setFrame(cv2.cvtColor(image, cv2.COLOR_BGR2RGB))
                cv2.imshow('mlp_image', image)

                # reshape image
                #image_array = half_gray.reshape(1, 38400).astype(np.float32)

                if cv2.waitKey(1) & 0xFF == ord('q'):
                    break

        cv2.destroyAllWindows()

    finally:
        print( 'Connection closed on videostream thread' )


# Class to handle the different threads 
class ThreadServer():
    # Server thread to handle the video
    def server_thread(self,host, port):
        server = SocketServer.TCPServer((host, port),VideoStreamHandler)
        server.serve_forever()
    def init_server(self, host, port):
        print( '+ Starting videostream server in ' + str( host ) + ':' + str( port ) )
        video_thread = threading.Thread(target=self.server_thread(host,port))
        video_thread.start()



#--------ThreadServer------------#
server = None
server = ThreadServer()
#------------Server widgets-------#
bStartServer = Button(myFrame, text="Start server", command=lambda:init_server(server))
bStartServer.grid(row=3,column=0, pady= 10)
#-----------main loop--------------#
root.mainloop()

线程启动时Tkinter崩溃

0 个答案: