miniav_flutter 0.5.5

Flutter companion for miniav. Re-exports the full miniav API and auto-registers a WidgetsBindingObserver that calls MiniAV.dispose() on hot restart, preventing "Callback invoked after it has been dele [...]

miniav_flutter

Flutter companion for miniav. Re-exports the full miniav API and adds a thin widget that automatically calls MiniAV.dispose() during Flutter hot reload — preventing the "Callback invoked after it has been deleted" fatal crash.

Why this package exists

miniav uses long-lived NativeCallable function pointers for capture callbacks. During a Flutter hot reload the Dart isolate is torn down and rebuilt, but native capture threads keep running. If a thread fires a callback into a dead NativeCallable handle the VM aborts unconditionally — there is no way to recover.

MiniAVBinding is a StatefulWidget whose reassemble() calls MiniAV.dispose() before the isolate is rebuilt. This atomically disables the C-layer callback dispatch so native threads silently drop in-flight callbacks instead of crashing. The next call to any startCapture re-enables dispatch automatically.

Installation

dependencies:
  miniav_flutter: ^0.5.4

Use miniav_flutter instead of miniav — it re-exports everything, so no other imports need to change.

Usage

Wrap your root widget with MiniAVBinding once in main():

import 'package:miniav_flutter/miniav_flutter.dart';

void main() {
  runApp(const MiniAVBinding(child: MyApp()));
}

That is all that is required. All MiniAV.* APIs (MiniCamera, MiniScreen, MiniAudioInput, MiniLoopback, MiniInput, etc.) are available from the same package:miniav_flutter/miniav_flutter.dart import.

Pure-Dart projects

If you are not using Flutter (e.g. a CLI tool or a Dart-only test), import package:miniav/miniav.dart directly and call MiniAV.dispose() manually when tearing down.

API surface

Everything exported by package:miniav/miniav.dart, plus:

Symbol	Description
MiniAVBinding	Root widget — call reassemble() hook wires up MiniAV.dispose()