Added iOS language detector results

mediapipe/tasks/ios/text/language_detector/BUILD

@@ -25,3 +25,11 @@ objc_library(
     deps = ["//mediapipe/tasks/ios/core:MPPTaskOptions"],
 )
 
+objc_library(
+    name = "MPPLanguageDetectorResult",
+    srcs = ["sources/MPPLanguageDetectorResult.m"],
+    hdrs = ["sources/MPPLanguageDetectorResult.h"],
+    deps = [
+        "//mediapipe/tasks/ios/core:MPPTaskResult",
+    ],
+)

mediapipe/tasks/ios/text/language_detector/sources/MPPLanguageDetectorResult.h

@@ -0,0 +1,70 @@
+// 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/core/sources/MPPTaskResult.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+NS_SWIFT_NAME(LanguagePrediction)
+@interface MPPLanguagePrediction : NSObject
+
+/** The i18n language / locale code for the prediction. */
+@property(nonatomic, readonly) NSString *languageCode;
+
+/** The probability for the prediction. */
+@property(nonatomic, readonly) float probability;
+
+/**
+ * Initializes a new `LanguagePrediction` with the given language code and probability.
+ *
+ * @param languageCode The i18n language / locale code for the prediction.
+ * @param probability The probability for the prediction.
+ *
+ * @return An instance of `LanguagePrediction` initialized with the given language code and
+ * probability.
+ */
+- (instancetype)initWithLanguageCode:(NSString *)languageCode probability:(float)probability;
+
+@end
+
+/** Represents the results generated by `LanguageDetector`. **/
+NS_SWIFT_NAME(LanguageDetectorResult)
+@interface MPPLanguageDetectorResult : MPPTaskResult
+
+/** A list of language predictions. */
+@property(nonatomic, readonly) NSArray<MPPLanguagePrediction *> *languagePredictions;
+
+/**
+ * Initializes a new `LanguageDetectorResult` with the given array of language predictions and
+ * timestamp (in milliseconds).
+ *
+ * @param languagePrediction The array of language predictions in this result.
+ * @param timestampInMilliseconds The timestamp (in milliseconds) for this result.
+ *
+ * @return An instance of `LanguageDetectorResult` initialized with the given array of language
+ * predictions and timestamp (in milliseconds).
+ */
+- (instancetype)initWithLanguagePredictions:(NSArray<MPPLanguagePrediction *> *)languagePredictions
+                    timestampInMilliseconds:(NSInteger)timestampInMilliseconds;
+
+- (instancetype)initWithTimestampInMilliseconds:(NSInteger)timestampInMilliseconds NS_UNAVAILABLE;
+
+- (instancetype)init NS_UNAVAILABLE;
+
++ (instancetype)new NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END

mediapipe/tasks/ios/text/language_detector/sources/MPPLanguageDetectorResult.m

@@ -0,0 +1,41 @@
+// 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/text/language_detector/sources/MPPLanguageDetectorResult.h"
+
+@implementation MPPLanguagePrediction
+
+- (instancetype)initWithLanguageCode:(NSString *)languageCode probability:(float)probability {
+  self = [super init];
+  if (self) {
+    _languageCode = languageCode;
+    _probability = probability;
+  }
+  return self;
+}
+
+@end
+
+@implementation MPPLanguageDetectorResult
+
+- (instancetype)initWithLanguagePredictions:(NSArray<MPPLanguagePrediction *> *)languagePredictions
+                    timestampInMilliseconds:(NSInteger)timestampInMilliseconds {
+  self = [super initWithTimestampInMilliseconds:timestampInMilliseconds];
+  if (self) {
+    _languagePredictions = languagePredictions;
+  }
+  return self;
+}
+
+@end