Add autoGainControl field to AudioConstraints (#156)

Author: rogurotus

CHANGELOG.md

@@ -17,6 +17,7 @@ All user visible changes to this project will be documented in this file. This p
 - Support for multiple input audio devices usage at one time on desktop platforms. ([#145])
 - `MediaStreamTrack.isAudioLevelAvailable` function and `MediaStreamTrack.onAudioLevelChanged` callback for detecting input audio level changes of local `MediaStreamTrack`. ([#149])
 - `RtpSender.getCapabilities()` and `RtpTransceiver.setCodecPreferences()` operating by `RtpCapabilities`, `RtpHeaderExtensionCapability` and `RtpCodecCapability`. ([#137])
+- `AudioConstraints.autoGainControl` field. ([#156])
 
 ### Changed
 
@@ -40,6 +41,7 @@ All user visible changes to this project will be documented in this file. This p
 [#149]: https://github.com/instrumentisto/medea-flutter-webrtc/pull/149
 [#151]: https://github.com/instrumentisto/medea-flutter-webrtc/pull/151
 [#155]: https://github.com/instrumentisto/medea-flutter-webrtc/pull/155
+[#156]: https://github.com/instrumentisto/medea-flutter-webrtc/pull/156
 [123.0.6312.105]: https://github.com/instrumentisto/libwebrtc-bin/releases/tag/123.0.6312.105
 
 

lib/src/model/constraints.dart

@@ -73,8 +73,16 @@ abstract class DeviceMediaConstraints {
 
 /// [DeviceMediaConstraints] for audio devices.
 class AudioConstraints implements DeviceMediaConstraints {
+  /// Identifier of the device generating the content of the
+  /// [MediaStreamTrack].
+  ///
+  /// First device will be chosen if an empty [String] is provided.
   String? deviceId;
 
+  /// Indicator whether to automatically manage changes in the volume of its
+  /// source media to maintain a steady overall volume level.
+  bool? autoGainControl;
+
   /// Converts this model to the [Map] expected by Flutter.
   @override
   Map<String, dynamic> toMap() {