openmv/scripts/examples/Arduino/Portenta-H7/40-WiFi/mjpeg_streamer.py
2021-02-13 21:24:33 +02:00

79 lines
2.3 KiB
Python

# 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, image, time, network, socket, sys
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
print("Trying to connect... (This may take a while)...")
wlan = network.WLAN(network.STA_IF)
wlan.deinit()
wlan.active(True)
wlan.connect(SSID, KEY, timeout=30000)
# 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)