import sys
try:
import uasyncio as asyncio
except ImportError:
import asyncio
from microdot_asyncio import Microdot
app = Microdot()
frames = []
for file in ['1.jpg', '2.jpg', '3.jpg']:
with open(file, 'rb') as f:
frames.append(f.read())
@app.route('/')
def index(request):
return '''
Microdot Video Streaming
Microdot Video Streaming
''', 200, {'Content-Type': 'text/html'}
@app.route('/video_feed')
async def video_feed(request):
if sys.implementation.name != 'micropython':
# CPython supports yielding async generators
async def stream():
yield b'--frame\r\n'
while True:
for frame in frames:
yield b'Content-Type: image/jpeg\r\n\r\n' + frame + \
b'\r\n--frame\r\n'
await asyncio.sleep(1)
else:
# MicroPython can only use class-based async generators
class stream():
def __init__(self):
self.i = 0
def __aiter__(self):
return self
async def __anext__(self):
await asyncio.sleep(1)
self.i = (self.i + 1) % len(frames)
return b'Content-Type: image/jpeg\r\n\r\n' + \
frames[self.i] + b'\r\n--frame\r\n'
return stream(), 200, {'Content-Type':
'multipart/x-mixed-replace; boundary=frame'}
if __name__ == '__main__':
app.run(debug=True)