Created
June 3, 2022 16:34
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Camera streaming script
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import io | |
import picamera | |
import logging | |
import socketserver | |
from threading import Condition | |
from http import server | |
PAGE = """\ | |
<html> | |
<head> | |
<title>picamera MJPEG streaming demo</title> | |
</head> | |
<body> | |
<h1>PiCamera MJPEG Streaming Demo</h1> | |
<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 = ('', 8123) | |
server = StreamingServer(address, StreamingHandler) | |
server.serve_forever() | |
finally: | |
camera.stop_recording() |
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