# 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 AP. # # This example shows off how to do MJPEG streaming in AccessPoint mode. # Chrome, Firefox and MJpegViewer App on Android have been tested. # Connect to OPENMV_AP and use this URL: http://192.168.1.1:8080 to view the stream. import sensor import time import network import socket SSID = "OPENMV_AP" # Network SSID KEY = "1234567890" # Network key (must be 10 chars) HOST = "" # Use first available interface PORT = 8080 # Arbitrary non-privileged port # Reset sensor sensor.reset() sensor.set_framesize(sensor.QQVGA) sensor.set_pixformat(sensor.GRAYSCALE) # Init wlan module in AP mode. wlan = network.WLAN(network.AP_IF) wlan.config(ssid=SSID, key=KEY, channel=2) wlan.active(True) print("AP mode started. SSID: {} IP: {}".format(SSID, wlan.ifconfig()[0])) # You can block waiting for client to connect # print(wlan.wait_for_sta(100000)) def start_streaming(client): # Read request from client data = client.recv(1024) # Should parse client request here # Send multipart header client.send( "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.to_jpeg(quality=35, copy=True) 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()) server = None while True: if server is None: # Create server socket server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, True) # Bind and listen server.bind([HOST, PORT]) server.listen(5) # Set server socket to blocking server.setblocking(True) try: print("Waiting for connections..") client, addr = server.accept() except OSError as e: server.close() server = None print("server socket error:", e) continue try: # set client socket timeout to 2s client.settimeout(5.0) print("Connected to " + addr[0] + ":" + str(addr[1])) start_streaming(client) except OSError as e: client.close() print("client socket error:", e) # sys.print_exception(e)