From b91b485035545f3263cb88ade8444eb6fc32d407 Mon Sep 17 00:00:00 2001
From: Prianka Liz Kariat <prianka.kariat@ymedialabs.com>
Date: Fri, 6 Jan 2023 16:36:28 +0530
Subject: [PATCH] Added MPPBaseOptions Helpers

---
 mediapipe/tasks/ios/core/utils/BUILD          | 27 ++++++++++++
 .../utils/sources/MPPBaseOptions+Helpers.h    | 26 +++++++++++
 .../utils/sources/MPPBaseOptions+Helpers.mm   | 44 +++++++++++++++++++
 3 files changed, 97 insertions(+)
 create mode 100644 mediapipe/tasks/ios/core/utils/BUILD
 create mode 100644 mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.h
 create mode 100644 mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.mm

diff --git a/mediapipe/tasks/ios/core/utils/BUILD b/mediapipe/tasks/ios/core/utils/BUILD
new file mode 100644
index 000000000..1cfc75e6a
--- /dev/null
+++ b/mediapipe/tasks/ios/core/utils/BUILD
@@ -0,0 +1,27 @@
+# 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 = "MPPBaseOptionsHelpers",
+    srcs = ["sources/MPPBaseOptions+Helpers.mm"],
+    hdrs = ["sources/MPPBaseOptions+Helpers.h"],
+    deps = [
+        "//mediapipe/tasks/ios/core:MPPBaseOptions",
+        "//mediapipe/tasks/cc/core/proto:base_options_cc_proto",
+    ],
+)
diff --git a/mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.h b/mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.h
new file mode 100644
index 000000000..d52df2ae4
--- /dev/null
+++ b/mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.h
@@ -0,0 +1,26 @@
+// 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.
+
+#include "mediapipe/tasks/cc/core/proto/base_options.pb.h"
+#import "mediapipe/tasks/ios/core/sources/MPPBaseOptions.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface MPPBaseOptions (Helpers)
+
+- (void)copyToProto:(mediapipe::tasks::core::proto::BaseOptions *)baseOptionsProto;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.mm b/mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.mm
new file mode 100644
index 000000000..3fd8fbda3
--- /dev/null
+++ b/mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.mm
@@ -0,0 +1,44 @@
+// 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/core/utils/sources/MPPBaseOptions+Helpers.h"
+
+namespace {
+using BaseOptionsProto = ::mediapipe::tasks::core::proto::BaseOptions;
+}
+
+@implementation MPPBaseOptions (Helpers)
+
+- (void)copyToProto:(BaseOptionsProto *)baseOptionsProto {
+  baseOptionsProto->Clear();
+
+  if (self.modelAssetPath) {
+    baseOptionsProto->mutable_model_asset()->set_file_name(self.modelAssetPath.UTF8String);
+  }
+
+  switch (self.delegate) {
+    case MPPDelegateCPU: {
+      baseOptionsProto->mutable_acceleration()->mutable_tflite();
+      break;
+    }
+    case MPPDelegateGPU: {
+      // TODO: Provide an implementation for GPU Delegate.
+      [NSException raise:@"Invalid value for delegate" format:@"GPU Delegate is not implemented."];
+    }
+    default:
+      break;
+  }
+}
+
+@end