97 lines
3.0 KiB
Python
97 lines
3.0 KiB
Python
#!/usr/bin/python3
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# Mostly copied from https://picamera.readthedocs.io/en/release-1.13/recipes2.html
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# Run this script, then point a web browser at http:<this-ip-address>:8000
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# Note: needs simplejpeg to be installed (pip3 install simplejpeg).
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import io
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import logging
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import socketserver
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from http import server
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from threading import Condition
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from picamera2 import Picamera2
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from picamera2.encoders import JpegEncoder
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from picamera2.outputs import FileOutput
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PAGE = """\
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<html>
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<head>
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<title>picamera2 MJPEG streaming demo</title>
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</head>
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<body>
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<h1>Picamera2 MJPEG Streaming Demo</h1>
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<img src="stream.mjpg" width="640" height="480" />
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</body>
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</html>
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"""
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class StreamingOutput(io.BufferedIOBase):
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def __init__(self):
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self.frame = None
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self.condition = Condition()
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def write(self, buf):
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with self.condition:
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self.frame = buf
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self.condition.notify_all()
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class StreamingHandler(server.BaseHTTPRequestHandler):
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def do_GET(self):
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if self.path == '/':
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self.send_response(301)
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self.send_header('Location', '/index.html')
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self.end_headers()
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elif self.path == '/index.html':
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content = PAGE.encode('utf-8')
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self.send_response(200)
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self.send_header('Content-Type', 'text/html')
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self.send_header('Content-Length', len(content))
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self.end_headers()
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self.wfile.write(content)
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elif self.path == '/stream.mjpg':
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self.send_response(200)
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self.send_header('Age', 0)
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self.send_header('Cache-Control', 'no-cache, private')
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self.send_header('Pragma', 'no-cache')
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self.send_header('Content-Type', 'multipart/x-mixed-replace; boundary=FRAME')
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self.end_headers()
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try:
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while True:
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with output.condition:
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output.condition.wait()
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frame = output.frame
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self.wfile.write(b'--FRAME\r\n')
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self.send_header('Content-Type', 'image/jpeg')
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self.send_header('Content-Length', len(frame))
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self.end_headers()
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self.wfile.write(frame)
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self.wfile.write(b'\r\n')
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except Exception as e:
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logging.warning(
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'Removed streaming client %s: %s',
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self.client_address, str(e))
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else:
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self.send_error(404)
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self.end_headers()
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class StreamingServer(socketserver.ThreadingMixIn, server.HTTPServer):
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allow_reuse_address = True
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daemon_threads = True
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picam2 = Picamera2()
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picam2.configure(picam2.create_video_configuration(main={"size": (640, 480)}))
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output = StreamingOutput()
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picam2.start_recording(JpegEncoder(), FileOutput(output))
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try:
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address = ('', 8000)
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server = StreamingServer(address, StreamingHandler)
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server.serve_forever()
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finally:
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picam2.stop_recording()
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