# 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 usocket SSID = "" # Network SSID KEY = "" # Network key 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 and connect to network print("Trying to connect... (may take a while)...") wlan = network.WINC() wlan.connect(SSID, key=KEY, security=wlan.WPA_PSK) # We should have a valid IP now via DHCP print(wlan.ifconfig()) # Create server socket s = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM) s.setsockopt(usocket.SOL_SOCKET, usocket.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 2s client.settimeout(2.0) 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)