95 lines
2.9 KiB
Python
95 lines
2.9 KiB
Python
import asyncio
|
|
import queue
|
|
from fractions import Fraction
|
|
from urllib.parse import urlparse
|
|
|
|
import aiohttp
|
|
import av
|
|
import numpy as np
|
|
from aiortc import RTCPeerConnection, RTCSessionDescription, RTCConfiguration, VideoStreamTrack
|
|
|
|
|
|
class DummyVideoTrack(VideoStreamTrack):
|
|
async def recv(self):
|
|
# 简洁初始化、返回固定颜色的帧
|
|
return np.full((480, 640, 3), (0, 0, 255), dtype=np.uint8)
|
|
|
|
|
|
async def receive_video_frames(whep_url):
|
|
pc = RTCPeerConnection(RTCConfiguration(iceServers=[]))
|
|
frames_queue = asyncio.Queue()
|
|
|
|
pc.addTrack(DummyVideoTrack())
|
|
|
|
@pc.on("track")
|
|
def on_track(track):
|
|
if track.kind == "video":
|
|
asyncio.create_task(consume_track(track, frames_queue))
|
|
|
|
@pc.on("iceconnectionstatechange")
|
|
def on_ice_connection_state_change():
|
|
print(f"ICE 连接状态: {pc.iceConnectionState}")
|
|
|
|
offer = await pc.createOffer()
|
|
await pc.setLocalDescription(offer)
|
|
|
|
headers = {"Content-Type": "application/sdp"}
|
|
|
|
async with aiohttp.ClientSession() as session:
|
|
async with session.post(whep_url, data=pc.localDescription.sdp, headers=headers) as response:
|
|
if response.status != 201:
|
|
raise Exception(f"服务器返回错误: {response.status}")
|
|
|
|
answer = RTCSessionDescription(sdp=await response.text(), type="answer")
|
|
await pc.setRemoteDescription(answer)
|
|
|
|
if "Location" in response.headers:
|
|
base_url = f"{urlparse(whep_url).scheme}://{urlparse(whep_url).netloc}"
|
|
print("ICE 协商 URL:", base_url + response.headers["Location"])
|
|
|
|
while pc.iceConnectionState not in ["connected", "completed"]:
|
|
await asyncio.sleep(1)
|
|
|
|
print("ICE 连接完成，开始接收视频流")
|
|
|
|
try:
|
|
while True:
|
|
frame = await frames_queue.get()
|
|
if frame is None:
|
|
break
|
|
yield frame
|
|
except KeyboardInterrupt:
|
|
pass
|
|
finally:
|
|
await pc.close()
|
|
|
|
|
|
async def consume_track(track, frames_queue):
|
|
try:
|
|
while True:
|
|
frame = await track.recv()
|
|
if frame is None:
|
|
print("没有接收到有效的帧数据")
|
|
await frames_queue.put(None)
|
|
break
|
|
img = frame.to_ndarray(format="bgr24")
|
|
await frames_queue.put(img)
|
|
except Exception as e:
|
|
print("处理帧错误:", e)
|
|
await frames_queue.put(None)
|
|
|
|
|
|
def rtc_frame(url, frame_queue):
|
|
async def main():
|
|
async for frame in receive_video_frames(url):
|
|
try:
|
|
frame_queue.put_nowait(frame)
|
|
except queue.Full:
|
|
frame_queue.get_nowait()
|
|
frame_queue.put_nowait(frame)
|
|
|
|
loop = asyncio.new_event_loop()
|
|
asyncio.set_event_loop(loop)
|
|
loop.run_until_complete(main())
|
|
loop.close()
|