# -*- coding: UTF-8 -*-
import socket
import time
import traceback
from VideoCapture import Device
import threading
import Image
# 全局变量
is_sending = False
cli_address = ('', 0)
# 主机地址和端口
host = ''
port = 10218
# 初始化UDP socket
ser_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ser_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
ser_socket.bind((host, port))
# 接收线程类，用于接收客户端发送的消息
class UdpReceiver(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.thread_stop = False
def run(self):
while not self.thread_stop:
# 声明全局变量，接收消息后更改
global cli_address
global is_sending
try:
message, address = ser_socket.recvfrom(2048)
except:
traceback.print_exc()
continue
# print message,cli_address
cli_address = address
if message == 'startCam':
print 'start camera',
is_sending = True
ser_socket.sendto('startRcv', cli_address)
if message == 'quitCam':
is_sending = False
print 'quit camera',
def stop(self):
self.thread_stop = True
# 创建接收线程
receiveThread = UdpReceiver()
receiveThread.setDaemon(True) # 该选项设置后使得主线程退出后子线程同时退出
receiveThread.start()
# 初始化摄像头
cam = Device()
#cam.setResolution(320,240)
# 主线程循环，发送视频数据
while 1:
if is_sending:
img = cam.getImage().resize((160,120),Image.BICUBIC)
data = img.tostring()
ser_socket.sendto(data, cli_address)
time.sleep(0.1)
else:
time.sleep(1)
receiveThread.stop()
ser_socket.close()
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