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- # Web streaming example
- # Source code from the official PiCamera package
- # http://picamera.readthedocs.io/en/latest/recipes2.html#web-streaming
- import io
- import picamera
- import logging
- import socketserver
- from threading import Condition
- from http import server
- PAGE="""\
- <html>
- <head>
- <title>Raspberry Pi - Surveillance Camera</title>
- </head>
- <body>
- <center><h1>Raspberry Pi - Object Manipulator</h1></center>
- <center><img src="stream.mjpg" width="640" height="480"></center>
- </body>
- </html>
- """
- class StreamingOutput(object):
- def __init__(self):
- self.frame = None
- self.buffer = io.BytesIO()
- self.condition = Condition()
- def write(self, buf):
- if buf.startswith(b'\xff\xd8'):
- # New frame, copy the existing buffer's content and notify all
- # clients it's available
- self.buffer.truncate()
- with self.condition:
- self.frame = self.buffer.getvalue()
- self.condition.notify_all()
- self.buffer.seek(0)
- return self.buffer.write(buf)
- class StreamingHandler(server.BaseHTTPRequestHandler):
- 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.mjpg':
- 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 output.condition:
- output.condition.wait()
- frame = 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
- with picamera.PiCamera(resolution='640x480', framerate=24) as camera:
- output = StreamingOutput()
- #Uncomment the next line to change your Pi's Camera rotation (in degrees)
- camera.rotation = 270
- camera.start_recording(output, format='mjpeg')
- try:
- address = ('', 8000)
- server = StreamingServer(address, StreamingHandler)
- server.serve_forever()
- finally:
- camera.stop_recording()
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