espnet3.demo.app_builder.build_demo_app

source

espnet3.demo.app_builder.build_demo_app(demo_dir: Path) → Blocks

Build a Gradio demo app from a packaged demo directory.

The demo directory is expected to contain a demo.yaml (loaded via espnet3.demo.resolve.load_demo_config()) and any referenced assets such as an inference config (e.g., config/infer.yaml).

This function wires: : - UI components built from the demo config (or system defaults).

• A “Run” button that triggers espnet3.demo.runtime.run_inference().

• Parameters:demo_dir (Path) – Path to the demo directory.
• Returns: A configured Gradio Blocks app instance.
• Return type: gr.Blocks
• Raises:
  • ValueError – If the demo config does not define UI configuration and no supported system default UI is available.
  • OSError – If required config files under demo_dir cannot be read.

Example

>>> from pathlib import Path
>>> import gradio as gr
>>> app = build_demo_app(Path("./demo"))
>>> isinstance(app, gr.Blocks)
True

Notes

• If demo.yaml provides ui.article_path, it is read relative to demo_dir (unless an absolute path is provided).