Added MPPGestureRecognizerResult

mediapipe/tasks/ios/vision/gesture_recognizer/BUILD

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+# Copyright 2023 The MediaPipe Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+package(default_visibility = ["//mediapipe/tasks:internal"])
+
+licenses(["notice"])
+
+objc_library(
+    name = "MPPGestureRecognizerResult",
+    srcs = ["sources/MPPGestureRecognizerResult.m"],
+    hdrs = ["sources/MPPGestureRecognizerResult.h"],
+    deps = [
+        "//mediapipe/tasks/ios/components/containers:MPPCategory",
+        "//mediapipe/tasks/ios/components/containers:MPPLandmark",
+        "//mediapipe/tasks/ios/core:MPPTaskResult",
+    ],
+)
+

mediapipe/tasks/ios/vision/gesture_recognizer/sources/MPPGestureRecognizerResult.h

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+// Copyright 2023 The MediaPipe Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <Foundation/Foundation.h>
+
+#import "mediapipe/tasks/ios/components/containers/sources/MPPCategory.h"
+#import "mediapipe/tasks/ios/components/containers/sources/MPPLandmark.h"
+#import "mediapipe/tasks/ios/core/sources/MPPTaskResult.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Represents the gesture recognition results generated by MPPGestureRecognizer. */
+NS_SWIFT_NAME(GestureRecognizerResult)
+@interface MPPGestureRecognizerResult : MPPTaskResult
+
+/** Hand landmarks of detected hands. */
+@property(nonatomic, readonly) NSArray<NSArray<MPPLandmark *> *> *landmarks;
+
+/** Hand landmarks in world coordniates of detected hands. */
+@property(nonatomic, readonly) NSArray<NSArray<MPPLandmark *> *> *worldLandmarks;
+
+/** Handedness of detected hands. */
+@property(nonatomic, readonly) NSArray<NSArray<MPPCategory *> *> *handedness;
+
+/**
+ * Recognized hand gestures of detected hands. Note that the index of the gesture is always -1,
+ * because the raw indices from multiple gesture classifiers cannot consolidate to a meaningful
+ * index.
+ */
+@property(nonatomic, readonly) NSArray<NSArray<MPPCategory *> *> *gestures;
+
+/**
+ * Initializes a new `MPPGestureRecognizerResult` with the given landmarks, world landmarks,
+ * handedness, gestures and timestamp (in milliseconds).
+ *
+ * @param landmarks The hand landmarks of detected hands.
+ * @param worldLandmarks The hand landmarks in world coordniates of detected hands.
+ * @param handedness The handedness of detected hands.
+ * @param handedness The recognized hand gestures of detected hands.
+ * @param timestampMs The timestamp for this result.
+ *
+ * @return An instance of `MPPGestureRecognizerResult` initialized with the given landmarks, world
+ * landmarks, handedness and gestures.
+ *
+ */
+- (instancetype)initWithLandmarks:(NSArray<NSArray<MPPLandmark *> *> *)landmarks
+                   worldLandmarks:(NSArray<NSArray<MPPLandmark *> *> *)worldLandmarks
+                       handedness:(NSArray<NSArray<MPPCategory *> *> *)handedness
+                         gestures:(NSArray<NSArray<MPPCategory *> *> *)gestures
+                      timestampMs:(NSInteger)timestampMs;
+
+@end
+
+NS_ASSUME_NONNULL_END

mediapipe/tasks/ios/vision/gesture_recognizer/sources/MPPGestureRecognizerResult.m

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+// Copyright 2023 The MediaPipe Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "mediapipe/tasks/ios/vision/gesture_recognizer/sources/MPPGestureRecognizerResult.h"
+
+@implementation MPPGestureRecognizerResult
+
+- (instancetype)initWithLandmarks:(NSArray<NSArray<MPPLandmark *> *> *)landmarks
+                   worldLandmarks:(NSArray<NSArray<MPPLandmark *> *> *)worldLandmarks
+                       handedness:(NSArray<NSArray<MPPCategory *> *> *)handedness
+                         gestures:(NSArray<NSArray<MPPCategory *> *> *)gestures
+                      timestampMs:(NSInteger)timestampMs {
+  self = [super initWithTimestampMs:timestampMs];
+  if (self) {
+    _landmarks = landmarks;
+    _worldLandmarks = worldLandmarks;
+    _handedness = handedness;
+    _gestures = gestures;
+  }
+  return self;
+}
+
+@end