From 607b646953adc852a50ff1712e867b67a6f84f61 Mon Sep 17 00:00:00 2001
From: Prianka Liz Kariat <prianka.kariat@ymedialabs.com>
Date: Thu, 5 Jan 2023 19:36:54 +0530
Subject: [PATCH] Added iOS text classifier options and result

---
 .../tasks/ios/text/text_classifier/BUILD      | 37 +++++++++++++++
 .../sources/MPPTextClassifierOptions.h        | 35 +++++++++++++++
 .../sources/MPPTextClassifierOptions.m        | 27 +++++++++++
 .../sources/MPPTextClassifierResult.h         | 45 +++++++++++++++++++
 .../sources/MPPTextClassifierResult.m         | 28 ++++++++++++
 5 files changed, 172 insertions(+)
 create mode 100644 mediapipe/tasks/ios/text/text_classifier/BUILD
 create mode 100644 mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierOptions.h
 create mode 100644 mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierOptions.m
 create mode 100644 mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierResult.h
 create mode 100644 mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierResult.m

diff --git a/mediapipe/tasks/ios/text/text_classifier/BUILD b/mediapipe/tasks/ios/text/text_classifier/BUILD
new file mode 100644
index 000000000..7d3f4b05d
--- /dev/null
+++ b/mediapipe/tasks/ios/text/text_classifier/BUILD
@@ -0,0 +1,37 @@
+# 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 = "MPPTextClassifierOptions",
+    srcs = ["sources/MPPTextClassifierOptions.m"],
+    hdrs = ["sources/MPPTextClassifierOptions.h"],
+    deps = [
+        "//mediapipe/tasks/ios/core:MPPTaskOptions",
+        "//mediapipe/tasks/ios/components/processors:MPPClassifierOptions",
+    ],
+)
+
+objc_library(
+    name = "MPPTextClassifierResult",
+    srcs = ["sources/MPPTextClassifierResult.m"],
+    hdrs = ["sources/MPPTextClassifierResult.h"],
+    deps = [
+        "//mediapipe/tasks/ios/core:MPPTaskResult",
+        "//mediapipe/tasks/ios/components/containers:MPPClassificationResult",
+    ],
+)
diff --git a/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierOptions.h b/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierOptions.h
new file mode 100644
index 000000000..25189578b
--- /dev/null
+++ b/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierOptions.h
@@ -0,0 +1,35 @@
+// 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/processors/sources/MPPClassifierOptions.h"
+#import "mediapipe/tasks/ios/core/sources/MPPTaskOptions.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * Options for setting up a `MPPTextClassifierOptions`.
+ */
+NS_SWIFT_NAME(TextClassifierOptions)
+@interface MPPTextClassifierOptions : MPPTaskOptions
+
+/**
+ * Options for configuring the classifier behavior, such as score threshold, number of results, etc.
+ */
+@property(nonatomic, copy) MPPClassifierOptions *classifierOptions;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierOptions.m b/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierOptions.m
new file mode 100644
index 000000000..8d4ffd36f
--- /dev/null
+++ b/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierOptions.m
@@ -0,0 +1,27 @@
+// 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/text_classifier/sources/MPPTextClassifierOptions.h"
+
+@implementation MPPTextClassifierOptions
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _classifierOptions = [[MPPClassifierOptions alloc] init];
+  }
+  return self;
+}
+
+@end
\ No newline at end of file
diff --git a/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierResult.h b/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierResult.h
new file mode 100644
index 000000000..6926757e4
--- /dev/null
+++ b/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierResult.h
@@ -0,0 +1,45 @@
+// 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/MPPClassificationResult.h"
+#import "mediapipe/tasks/ios/core/sources/MPPTaskResult.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Represents the classification results generated by `MPPTextClassifier`. */
+NS_SWIFT_NAME(TextClassifierResult)
+@interface MPPTextClassifierResult : MPPTaskResult
+
+/** The `MPPClassificationResult` instance containing one set of results per classifier head. */
+@property(nonatomic, readonly) MPPClassificationResult *classificationResult;
+
+/**
+ * Initializes a new `MPPTextClassifierResult` with the given `MPPClassificationResult` and time
+ * stamp (in milliseconds).
+ *
+ * @param classificationResult The `MPPClassificationResult` instance containing one set of results
+ * per classifier head.
+ *
+ * @param timeStampMs The time stamp for this result.
+ *
+ * @return An instance of `MPPTextClassifierResult` initialized with the given
+ * `MPPClassificationResult` and time stamp (in milliseconds).
+ */
+- (instancetype)initWithClassificationResult:(MPPClassificationResult *)classificationResult
+                                 timestampMs:(NSInteger)timestampMs;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierResult.m b/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierResult.m
new file mode 100644
index 000000000..4d5c1104a
--- /dev/null
+++ b/mediapipe/tasks/ios/text/text_classifier/sources/MPPTextClassifierResult.m
@@ -0,0 +1,28 @@
+// 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/text_classifier/sources/MPPTextClassifierResult.h"
+
+@implementation MPPTextClassifierResult
+
+- (instancetype)initWithClassificationResult:(MPPClassificationResult *)classificationResult
+                                 timestampMs:(NSInteger)timestampMs {
+  self = [super initWithTimestampMs:timestampMs];
+  if (self) {
+    _classificationResult = classificationResult;
+  }
+  return self;
+}
+
+@end