wsy182
02d7c48557
- handle_client.py: 替换原始 JPEG WebSocket 为 aiortc RTCPeerConnection - 实现 SDP offer/answer 协商和 ICE candidate 交换 - 通过 track.recv() 接收 RTP 视频帧并 cv2.imshow 显示 - 服务端口改为 8765 匹配 Android 端 - 新增 requirements.txt: aiortc, websockets, opencv-python 等 - .gitignore 添加 __pycache__
122 lines
3.7 KiB
Python
122 lines
3.7 KiB
Python
import asyncio
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import json
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import re
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import websockets
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import cv2
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from loguru import logger
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from aiortc import RTCPeerConnection, RTCSessionDescription, RTCIceCandidate
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async def handle_client(websocket):
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client = websocket.remote_address
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logger.info(f"Client connected: {client}")
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pc = RTCPeerConnection()
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video_task = None
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def parse_ice(data):
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match = re.match(
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r'candidate:(\S+) (\d) (\S+) (\d+) (\S+) (\d+) typ (\S+)(?: raddr (\S+) rport (\d+))?',
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data["candidate"]
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)
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if not match:
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return None
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g = match.groups()
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cand = RTCIceCandidate(
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foundation=g[0],
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component=int(g[1]),
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protocol=g[2].lower(),
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priority=int(g[3]),
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ip=g[4],
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port=int(g[5]),
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type=g[6],
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relatedAddress=g[7],
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relatedPort=int(g[8]) if g[8] else None,
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)
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cand.sdpMid = data.get("sdpMid")
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cand.sdpMLineIndex = data.get("sdpMLineIndex", 0)
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return cand
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async def receive_video(track):
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logger.info("Start receiving video frames")
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frame_count = 0
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try:
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while True:
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frame = await track.recv()
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frame_count += 1
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img = frame.to_ndarray(format="bgr24")
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cv2.imshow("Android Camera (WebRTC)", img)
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if frame_count % 100 == 0:
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logger.info(f"Received {frame_count} frames, shape={img.shape}")
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if cv2.waitKey(1) & 0xFF == 27:
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logger.info("ESC pressed, closing display")
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break
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except asyncio.CancelledError:
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logger.info("Video receive task cancelled")
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except Exception as e:
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logger.error(f"Video receive error: {e}")
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@pc.on("track")
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async def on_track(track):
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logger.info(f"Track received: kind={track.kind}")
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if track.kind == "video":
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nonlocal video_task
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video_task = asyncio.ensure_future(receive_video(track))
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@pc.on("iceconnectionstatechange")
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async def on_iceconnectionstatechange():
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logger.info(f"ICE state: {pc.iceConnectionState}")
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if pc.iceConnectionState in ("failed", "closed", "disconnected"):
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await pc.close()
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try:
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async for message in websocket:
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data = json.loads(message)
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msg_type = data.get("type")
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if msg_type == "offer":
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offer = RTCSessionDescription(sdp=data["sdp"], type="offer")
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await pc.setRemoteDescription(offer)
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answer = await pc.createAnswer()
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await pc.setLocalDescription(answer)
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await websocket.send(json.dumps({
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"type": "answer",
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"sdp": pc.localDescription.sdp,
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}))
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elif msg_type == "candidate":
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cand = parse_ice(data)
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if cand:
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await pc.addIceCandidate(cand)
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except websockets.ConnectionClosed:
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logger.info(f"Client disconnected: {client}")
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except Exception as e:
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logger.exception(f"Error: {e}")
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finally:
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if video_task:
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video_task.cancel()
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try:
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await video_task
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except asyncio.CancelledError:
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pass
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await pc.close()
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cv2.destroyAllWindows()
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logger.info(f"Connection closed: {client}")
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async def main():
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host = "0.0.0.0"
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port = 8765
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logger.info(f"WebRTC signaling server: ws://{host}:{port}")
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async with websockets.serve(handle_client, host, port, max_size=10 * 1024 * 1024):
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await asyncio.Future()
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if __name__ == "__main__":
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asyncio.run(main())
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