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April 25, 2018 12:42
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Stream Raspberry Pi camera locally at ADDRESS_OF_PI:8000
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| import io | |
| import picamera | |
| import logging | |
| import socketserver | |
| from threading import Condition | |
| from http import server | |
| PAGE="""\ | |
| <html> | |
| <head> | |
| <title>birdhouse</title> | |
| <style> | |
| body { margin:0;padding:0;background:#333;} | |
| img {max-width:100%;width:640px;height:auto;margin:0 auto;display:block;} | |
| </style> | |
| </head> | |
| <body> | |
| <img src="stream.mjpg" width="640" height="480" /> | |
| </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() | |
| camera.start_recording(output, format='mjpeg') | |
| try: | |
| address = ('', 8000) | |
| server = StreamingServer(address, StreamingHandler) | |
| server.serve_forever() | |
| finally: | |
| camera.stop_recording() |
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