Add hardware api for camera, audio input/output selection. (#147)

* chore: Add hardware api for device settings dialog, camera preview, audio input/output selection. * update. * update flutter-webrtc. * chore: add popupmenu for audio/video selection. * chore: Improve menu tooltip text. * Removed hardware settings dialog, added it to experimental branch. * remove unused code. * Respond to device changes. * fixed `flutter analyze`. * update. * bump verion to v1.1.1.
2022-08-24 12:41:11 +08:00
parent c1445677f5
commit 1d621501f7
12 changed files with 300 additions and 18 deletions
@@ -0,0 +1,119 @@
+import 'dart:async';
+
+import 'package:flutter_webrtc/flutter_webrtc.dart' as rtc;
+
+class MediaDevice {
+  MediaDevice(this.deviceId, this.label, this.kind);
+
+  final String deviceId;
+  final String label;
+  final String kind;
+
+  @override
+  String toString() {
+    return 'MediaDevice{deviceId: $deviceId, label: $label, kind: $kind}';
+  }
+}
+
+class Hardware {
+  Hardware._internal() {
+    rtc.navigator.mediaDevices.ondevicechange = _onDeviceChange;
+    enumerateDevices().then((devices) {
+      selectedAudioInput ??=
+          devices.where((element) => element.kind == 'audioinput').first;
+      selectedAudioOutput ??=
+          devices.where((element) => element.kind == 'audiooutput').first;
+      selectedVideoInput ??=
+          devices.where((element) => element.kind == 'videoinput').first;
+    });
+  }
+
+  static final Hardware instance = Hardware._internal();
+
+  final StreamController<List<MediaDevice>> onDeviceChange =
+      StreamController.broadcast();
+
+  MediaDevice? selectedAudioInput;
+
+  MediaDevice? selectedAudioOutput;
+
+  MediaDevice? selectedVideoInput;
+
+  Future<List<MediaDevice>> enumerateDevices({String? type}) async {
+    var infos = await rtc.navigator.mediaDevices.enumerateDevices();
+    var devices =
+        infos.map((e) => MediaDevice(e.deviceId, e.label, e.kind!)).toList();
+    if (type != null && type.isNotEmpty) {
+      devices = devices.where((d) => d.kind == type).toList();
+    }
+    return devices;
+  }
+
+  Future<List<MediaDevice>> audioInputs() async {
+    return enumerateDevices(type: 'audioinput');
+  }
+
+  Future<List<MediaDevice>> audioOutputs() async {
+    return enumerateDevices(type: 'audiooutput');
+  }
+
+  Future<List<MediaDevice>> videoInputs() async {
+    return enumerateDevices(type: 'videoinput');
+  }
+
+  Future<void> selectAudioOutput(MediaDevice device) async {
+    if (rtc.WebRTC.platformIsWeb) {
+      throw UnimplementedError('selectAudioOutput not support on web');
+    }
+    selectedAudioOutput = device;
+    await rtc.Helper.selectAudioOutput(device.deviceId);
+  }
+
+  Future<void> selectAudioInput(MediaDevice device) async {
+    if (rtc.WebRTC.platformIsWeb || rtc.WebRTC.platformIsIOS) {
+      throw UnimplementedError(
+          'selectAudioInput is only supported on Android/Windows/macOS');
+    }
+    selectedAudioInput = device;
+    await rtc.Helper.selectAudioInput(device.deviceId);
+  }
+
+  Future<void> setSpeakerphoneOn(bool enable) async {
+    if (!rtc.WebRTC.platformIsAndroid || !rtc.WebRTC.platformIsIOS) {
+      throw UnimplementedError('setSpeakerphoneOn only support on iOS/Android');
+    }
+    await rtc.Helper.setSpeakerphoneOn(enable);
+  }
+
+  Future<rtc.MediaStream> openCamera(
+      {MediaDevice? device, bool? facingMode}) async {
+    var constraints = <String, dynamic>{
+      if (facingMode != null) 'facingMode': facingMode ? 'user' : 'environment',
+    };
+    if (device != null) {
+      if (rtc.WebRTC.platformIsWeb) {
+        constraints['deviceId'] = device.deviceId;
+      } else {
+        constraints['optional'] = [
+          {'sourceId': device.deviceId}
+        ];
+      }
+    }
+    selectedVideoInput = device;
+    return rtc.navigator.mediaDevices.getUserMedia(<String, dynamic>{
+      'audio': false,
+      'video': device != null ? constraints : true,
+    });
+  }
+
+  dynamic _onDeviceChange(dynamic _) async {
+    var devices = await enumerateDevices();
+    selectedAudioInput ??=
+        devices.where((element) => element.kind == 'audioinput').first;
+    selectedAudioOutput ??=
+        devices.where((element) => element.kind == 'audiooutput').first;
+    selectedVideoInput ??=
+        devices.where((element) => element.kind == 'videoinput').first;
+    onDeviceChange.add(devices);
+  }
+}
@@ -81,4 +81,16 @@ extension LocalVideoTrackExt on LocalVideoTrack {
      options.copyWith(cameraPosition: position),
    );
  }
+
+  Future<void> switchCamera(String deviceId) async {
+    final options = currentOptions;
+    if (options is! CameraCaptureOptions) {
+      logger.warning('Not a camera track');
+      return;
+    }
+
+    await restartTrack(
+      options.copyWith(deviceId: deviceId),
+    );
+  }
 }