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整体思路
server.py：用mss截图，然后zlib压缩后socket发送
client：socket接收，zlib解压缩，然后使用OpenCV播放
简单介绍mss
An ultra fast cross-platform multiple screenshots module in pure Python using ctypes.
具体去官网：https://github.com/BoboTiG/python-mss
直接上代码
server.py
from socket import socket
from threading import Thread
from zlib import compress
from mss import mss
# 截图大小
WIDTH = int(1366 / 1)
HEIGHT = int(768 / 1)
def send_screenshot(conn):
with mss() as sct:
rect = {'top': 0, 'left': 0, 'width': WIDTH, 'height': HEIGHT}
while 'recording':
img = sct.grab(rect)
# 压缩等级 (0-9)
# 并不一定是压缩level越高越好，这里要综合考虑压缩占用时间和网络传输时间
pixels = compress(img.bgra, 1)
# 压缩对比
# level:0 size:4196683
# level:1 size:248329
# level:2 size:246512
# level:9 size:196212
size = len(pixels)
size_len = (size.bit_length() + 7) // 8
conn.send(bytes([size_len]))
size_bytes = size.to_bytes(size_len, 'big')
conn.send(size_bytes)
conn.sendall(pixels)
def main(host='0.0.0.0', port=5000):
sock = socket()
sock.bind((host, port))
try:
sock.listen(5)
print('Server started.')
while 'connected':
conn, addr = sock.accept()
print('Client connected IP:', addr)
thread = Thread(target=send_screenshot, args=(conn,))
thread.start()
finally:
sock.close()
if __name__ == '__main__':
main()
client.py
from socket import socket
from zlib import decompress
import cv2
import numpy
from PIL import Image
# 截图大小
WIDTH = int(1366 / 1)
HEIGHT = int(768 / 1)
def recvall(conn, length):
buf = b''
while len(buf) < length:
data = conn.recv(length - len(buf))
if not data:
return data
buf += data
return buf
# host为server的ip
def main(host='10.100.40.52', port=5000):
watching = True
sock = socket()
sock.connect((host, port))
try:
while watching:
size_len = int.from_bytes(sock.recv(1), byteorder='big')
size = int.from_bytes(sock.recv(size_len), byteorder='big')
# 解压缩
bgra = decompress(recvall(sock, size))
img = Image.frombytes("RGB", (WIDTH, HEIGHT), bgra, "raw", "BGRX")
np_ar = numpy.array(img, dtype=numpy.uint8)
# 因为OpenCV模式色彩默认是BGR（红色和蓝色互换了）
# 这里就是把BGR改成RGB
np_ar = numpy.flip(np_ar[:, :, :3], 2)
cv2.imshow("OpenCV show", np_ar)
if cv2.waitKey(25) & 0xFF == ord("q"):
cv2.destroyAllWindows()
break
finally:
sock.close()
if __name__ == '__main__':
main()
