From 0eacc333752c5b0ebe698748bac86a9fc91bf8a2 Mon Sep 17 00:00:00 2001
From: Prianka Liz Kariat <prianka.kariat@ymedialabs.com>
Date: Thu, 5 Jan 2023 19:18:50 +0530
Subject: [PATCH] Added MPPTextTaskRunner

---
 mediapipe/tasks/ios/text/core/BUILD           | 31 ++++++++++++++++
 .../ios/text/core/sources/MPPTextTaskRunner.h | 37 +++++++++++++++++++
 .../text/core/sources/MPPTextTaskRunner.mm    | 29 +++++++++++++++
 3 files changed, 97 insertions(+)
 create mode 100644 mediapipe/tasks/ios/text/core/BUILD
 create mode 100644 mediapipe/tasks/ios/text/core/sources/MPPTextTaskRunner.h
 create mode 100644 mediapipe/tasks/ios/text/core/sources/MPPTextTaskRunner.mm

diff --git a/mediapipe/tasks/ios/text/core/BUILD b/mediapipe/tasks/ios/text/core/BUILD
new file mode 100644
index 000000000..6d558b22b
--- /dev/null
+++ b/mediapipe/tasks/ios/text/core/BUILD
@@ -0,0 +1,31 @@
+# Copyright 2022 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 = "MPPTextTaskRunner",
+    srcs = ["sources/MPPTextTaskRunner.mm"],
+    hdrs = ["sources/MPPTextTaskRunner.h"],
+    copts = [
+        "-ObjC++",
+        "-std=c++17",
+    ],
+    deps = [
+        "//mediapipe/tasks/ios/core:MPPTaskRunner",
+    ],
+)
+
diff --git a/mediapipe/tasks/ios/text/core/sources/MPPTextTaskRunner.h b/mediapipe/tasks/ios/text/core/sources/MPPTextTaskRunner.h
new file mode 100644
index 000000000..dd5d96ce6
--- /dev/null
+++ b/mediapipe/tasks/ios/text/core/sources/MPPTextTaskRunner.h
@@ -0,0 +1,37 @@
+// 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/MPPTaskRunner.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * This class is used to create and call appropriate methods on the C++ Task Runner to initialize, execute and terminate any Mediapipe text task. 
+ */
+@interface MPPTextTaskRunner : MPPTaskRunner
+
+/**
+ * Initializes a new `MPPTextTaskRunner` with the mediapipe task graph config proto.
+ *
+ * @param graphConfig A mediapipe task graph config proto.
+ *
+ * @return An instance of `MPPTextTaskRunner` initialized to the given graph config proto.
+ */
+- (instancetype)initWithCalculatorGraphConfig:(mediapipe::CalculatorGraphConfig)graphConfig
+                                        error:(NSError **)error NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/mediapipe/tasks/ios/text/core/sources/MPPTextTaskRunner.mm b/mediapipe/tasks/ios/text/core/sources/MPPTextTaskRunner.mm
new file mode 100644
index 000000000..956448c17
--- /dev/null
+++ b/mediapipe/tasks/ios/text/core/sources/MPPTextTaskRunner.mm
@@ -0,0 +1,29 @@
+// 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/core/sources/MPPTextTaskRunner.h"
+
+namespace {
+using ::mediapipe::CalculatorGraphConfig;
+}  // namespace
+
+@implementation MPPTextTaskRunner
+
+- (instancetype)initWithCalculatorGraphConfig:(CalculatorGraphConfig)graphConfig
+                                        error:(NSError **)error {
+  self = [super initWithCalculatorGraphConfig:graphConfig packetsCallback:nullptr error:error];
+  return self;
+}
+
+@end