equality for video types

lib/src/types/video_dimensions.dart

@@ -24,6 +24,19 @@ class VideoDimensions {
         width ?? this.width,
         height ?? this.height,
       );
+
+  // ----------------------------------------------------------------------
+  // equality
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is VideoDimensions &&
+          width == other.width &&
+          height == other.height;
+
+  @override
+  int get hashCode => Object.hash(width, height);
 }
 
 extension VideoDimensionsHelpers on VideoDimensions {

lib/src/types/video_encoding.dart

@@ -15,6 +15,19 @@ class VideoEncoding {
   @override
   String toString() =>
       '${runtimeType}(maxFramerate: ${maxFramerate}, maxBitrate: ${maxBitrate})';
+
+  // ----------------------------------------------------------------------
+  // equality
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is VideoEncoding &&
+          maxFramerate == other.maxFramerate &&
+          maxBitrate == other.maxBitrate;
+
+  @override
+  int get hashCode => Object.hash(maxFramerate, maxBitrate);
 }
 
 /// Convenience extension for [VideoEncoding].

lib/src/types/video_parameters.dart

@@ -15,6 +15,20 @@ class VideoParameters {
     required this.encoding,
   });
 
+  // ----------------------------------------------------------------------
+  // equality
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is VideoParameters &&
+          description == other.description &&
+          dimensions == other.dimensions &&
+          encoding == other.encoding;
+
+  @override
+  int get hashCode => Object.hash(description, dimensions, encoding);
+
   //
   // TODO: Return constraints that will work for all platforms (Web & Mobile)
   // https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia