From f219829b1d353d8410d7226aa594741acff9898e Mon Sep 17 00:00:00 2001
From: Prianka Liz Kariat <prianka.kariat@ymedialabs.com>
Date: Fri, 19 May 2023 17:42:57 +0530
Subject: [PATCH] Removed support for Delegates from iOS

---
 .../tasks/ios/core/sources/MPPBaseOptions.h     | 17 -----------------
 .../tasks/ios/core/sources/MPPBaseOptions.m     |  1 -
 .../utils/sources/MPPBaseOptions+Helpers.mm     | 15 +--------------
 3 files changed, 1 insertion(+), 32 deletions(-)

diff --git a/mediapipe/tasks/ios/core/sources/MPPBaseOptions.h b/mediapipe/tasks/ios/core/sources/MPPBaseOptions.h
index 603be803d..bef6bb9ee 100644
--- a/mediapipe/tasks/ios/core/sources/MPPBaseOptions.h
+++ b/mediapipe/tasks/ios/core/sources/MPPBaseOptions.h
@@ -16,17 +16,6 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-/**
- * MediaPipe Tasks delegate.
- */
-typedef NS_ENUM(NSUInteger, MPPDelegate) {
-  /** CPU. */
-  MPPDelegateCPU,
-
-  /** GPU. */
-  MPPDelegateGPU
-} NS_SWIFT_NAME(Delegate);
-
 /**
  * Holds the base options that is used for creation of any type of task. It has fields with
  * important information acceleration configuration, TFLite model source etc.
@@ -37,12 +26,6 @@ NS_SWIFT_NAME(BaseOptions)
 /** The path to the model asset to open and mmap in memory. */
 @property(nonatomic, copy) NSString *modelAssetPath;
 
-/**
- * Device delegate to run the MediaPipe pipeline. If the delegate is not set, the default
- * delegate CPU is used.
- */
-@property(nonatomic) MPPDelegate delegate;
-
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/mediapipe/tasks/ios/core/sources/MPPBaseOptions.m b/mediapipe/tasks/ios/core/sources/MPPBaseOptions.m
index c3571c4b4..a43119ad8 100644
--- a/mediapipe/tasks/ios/core/sources/MPPBaseOptions.m
+++ b/mediapipe/tasks/ios/core/sources/MPPBaseOptions.m
@@ -28,7 +28,6 @@
   MPPBaseOptions *baseOptions = [[MPPBaseOptions alloc] init];
 
   baseOptions.modelAssetPath = self.modelAssetPath;
-  baseOptions.delegate = self.delegate;
 
   return baseOptions;
 }
diff --git a/mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.mm b/mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.mm
index f7f8e5a55..eceed4998 100644
--- a/mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.mm
+++ b/mediapipe/tasks/ios/core/utils/sources/MPPBaseOptions+Helpers.mm
@@ -33,20 +33,7 @@ using BaseOptionsProto = ::mediapipe::tasks::core::proto::BaseOptions;
   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."];
-      break;
-    }
-    default:
-      break;
-  }
+  
 }
 
 @end