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alumia_mjpegServer.py
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# Mostly copied from https://picamera.readthedocs.io/en/release-1.13/recipes2.html
import io
import logging
import socketserver
from http import server
from threading import Condition
PAGE = """\
<html>
<head>
<title>picamera2 MJPEG streaming demo</title>
</head>
<body>
<h1>Picamera2 MJPEG Streaming Demo</h1>
<img src="stream.mjpeg" width="1920" height="1080" />
</body>
</html>
"""
class StreamingOutput(io.BufferedIOBase):
def __init__(self):
self.frame = None
self.condition = Condition()
def write(self, buf):
with self.condition:
self.frame = buf
self.condition.notify_all()
class StreamingHandler(server.BaseHTTPRequestHandler):
#this function is needed because "output" is not defined in the class (unless the script is here)
def define_output(self, output):
self.output = output
def do_GET(self):
if self.path == '/':
self.send_response(301)
self.send_header('Location', '/index.html')
self.end_headers()
elif self.path == '/index.html':
content = PAGE.encode('utf-8')
self.send_response(200)
self.send_header('Content-Type', 'text/html')
self.send_header('Content-Length', len(content))
self.end_headers()
self.wfile.write(content)
elif self.path == '/stream.mjpeg':
self.send_response(200)
self.send_header('Age', 0)
self.send_header('Cache-Control', 'no-cache, private')
self.send_header('Pragma', 'no-cache')
self.send_header('Content-Type', 'multipart/x-mixed-replace; boundary=FRAME')
self.end_headers()
try:
while True:
with self.output.condition:
self.output.condition.wait()
frame = self.output.frame
self.wfile.write(b'--FRAME\r\n')
self.send_header('Content-Type', 'image/jpeg')
self.send_header('Content-Length', len(frame))
self.end_headers()
self.wfile.write(frame)
self.wfile.write(b'\r\n')
except Exception as e:
logging.warning(
'Removed streaming client %s: %s',
self.client_address, str(e))
else:
self.send_error(404)
self.end_headers()
class StreamingServer(socketserver.ThreadingMixIn, server.HTTPServer):
allow_reuse_address = True
daemon_threads = True
#this method was added so that I could close the server in a way that wouldnt stop the program
def run(self):
try:
self.serve_forever()
except KeyboardInterrupt:
pass
finally:
# Clean-up server (close socket, etc.)
self.server_close()