# This work is licensed under the MIT license. # Copyright (c) 2013-2023 OpenMV LLC. All rights reserved. # https://github.com/openmv/openmv/blob/master/LICENSE # # MJPEG Streaming # # This example shows off how to do MJPEG streaming to a FIREFOX webrowser # Chrome, Firefox and MJpegViewer App on Android have been tested. # Connect to the IP address/port printed out from ifconfig to view the stream. import sensor import time import network import socket SSID = "" # Network SSID KEY = "" # Network key HOST = "" # Use first available interface PORT = 8080 # Arbitrary non-privileged port # Init sensor sensor.reset() sensor.set_framesize(sensor.QVGA) sensor.set_pixformat(sensor.GRAYSCALE) # Init wlan module and connect to network wlan = network.WLAN(network.STA_IF) wlan.active(True) wlan.connect(SSID, KEY) while not wlan.isconnected(): print('Trying to connect to "{:s}"...'.format(SSID)) time.sleep_ms(1000) # We should have a valid IP now via DHCP print("WiFi Connected ", wlan.ifconfig()) # Create server socket s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, True) # Bind and listen s.bind([HOST, PORT]) s.listen(5) # Set server socket to blocking s.setblocking(True) def start_streaming(s): print("Waiting for connections..") client, addr = s.accept() # set client socket timeout to 5s client.settimeout(5.0) print("Connected to " + addr[0] + ":" + str(addr[1])) # Read request from client data = client.recv(1024) # Should parse client request here # Send multipart header client.sendall( "HTTP/1.1 200 OK\r\n" "Server: OpenMV\r\n" "Content-Type: multipart/x-mixed-replace;boundary=openmv\r\n" "Cache-Control: no-cache\r\n" "Pragma: no-cache\r\n\r\n" ) # FPS clock clock = time.clock() # Start streaming images # NOTE: Disable IDE preview to increase streaming FPS. while True: clock.tick() # Track elapsed milliseconds between snapshots(). frame = sensor.snapshot() cframe = frame.compressed(quality=35) header = ( "\r\n--openmv\r\n" "Content-Type: image/jpeg\r\n" "Content-Length:" + str(cframe.size()) + "\r\n\r\n" ) client.sendall(header) client.sendall(cframe) print(clock.fps()) while True: try: start_streaming(s) except OSError as e: print("socket error: ", e) # sys.print_exception(e)