# Radio Player - Custom Cast Receiver

This folder contains a minimal Google Cast Web Receiver that displays a purple gradient background, station artwork, title and subtitle. It accepts `customData` hints sent from the sender (your app) for `backgroundImage`, `backgroundGradient` and `appName`.

Hosting requirements
- The receiver must be served over HTTPS and be publicly accessible.
- Recommended: host under GitHub Pages (`gh-pages` branch or `/docs` folder) or any static host (Netlify, Vercel, S3 + CloudFront).

Registering with Google Cast Console
1. Go to the Cast SDK Developer Console and create a new Application.
2. Choose "Custom Receiver" and provide the public HTTPS URL to `index.html` (e.g. `https://example.com/cast-receiver/index.html`).
3. Note the generated Application ID.

Sender changes
- After obtaining the Application ID, update your sender (sidecar) to launch that app ID instead of the DefaultMediaReceiver. The sidecar already supports passing `metadata.appId` when launching.

Testing locally
- You can serve this folder locally during development, but Chromecast devices require public HTTPS endpoints to use a registered app.