[feat] update some feature

sync code of  fastrtc,
add text support through datachannel,
fix safari connect problem
support chat without camera or mic

demo/object_detection/app.py

@@ -0,0 +1,77 @@
+import json
+from pathlib import Path
+
+import cv2
+import gradio as gr
+from fastapi import FastAPI
+from fastapi.responses import HTMLResponse
+from fastrtc import Stream, get_twilio_turn_credentials
+from gradio.utils import get_space
+from huggingface_hub import hf_hub_download
+from pydantic import BaseModel, Field
+
+try:
+    from demo.object_detection.inference import YOLOv10
+except (ImportError, ModuleNotFoundError):
+    from inference import YOLOv10
+
+
+cur_dir = Path(__file__).parent
+
+model_file = hf_hub_download(
+    repo_id="onnx-community/yolov10n", filename="onnx/model.onnx"
+)
+
+model = YOLOv10(model_file)
+
+
+def detection(image, conf_threshold=0.3):
+    image = cv2.resize(image, (model.input_width, model.input_height))
+    print("conf_threshold", conf_threshold)
+    new_image = model.detect_objects(image, conf_threshold)
+    return cv2.resize(new_image, (500, 500))
+
+
+stream = Stream(
+    handler=detection,
+    modality="video",
+    mode="send-receive",
+    additional_inputs=[gr.Slider(minimum=0, maximum=1, step=0.01, value=0.3)],
+    rtc_configuration=get_twilio_turn_credentials() if get_space() else None,
+    concurrency_limit=2 if get_space() else None,
+)
+
+app = FastAPI()
+
+stream.mount(app)
+
+
+@app.get("/")
+async def _():
+    rtc_config = get_twilio_turn_credentials() if get_space() else None
+    html_content = open(cur_dir / "index.html").read()
+    html_content = html_content.replace("__RTC_CONFIGURATION__", json.dumps(rtc_config))
+    return HTMLResponse(content=html_content)
+
+
+class InputData(BaseModel):
+    webrtc_id: str
+    conf_threshold: float = Field(ge=0, le=1)
+
+
+@app.post("/input_hook")
+async def _(data: InputData):
+    stream.set_input(data.webrtc_id, data.conf_threshold)
+
+
+if __name__ == "__main__":
+    import os
+
+    if (mode := os.getenv("MODE")) == "UI":
+        stream.ui.launch(server_port=7860)
+    elif mode == "PHONE":
+        stream.fastphone(host="0.0.0.0", port=7860)
+    else:
+        import uvicorn
+
+        uvicorn.run(app, host="0.0.0.0", port=7860)