[CoreML] Create EP by AppendExecutionProvider

csharp/src/Microsoft.ML.OnnxRuntime/NativeMethods.shared.cs

@@ -1272,7 +1272,7 @@ IntPtr[] outputValues /* An array of output value pointers. Array must be alloca
         /// <summary>
         /// Append an execution provider instance to the native OrtSessionOptions instance.
         ///
-        /// 'SNPE' and 'XNNPACK' are currently supported as providerName values.
+        /// 'SNPE', 'XNNPACK' and 'CoreML' are currently supported as providerName values.
         ///
         /// The number of providerOptionsKeys must match the number of providerOptionsValues and equal numKeys.
         /// </summary>

csharp/src/Microsoft.ML.OnnxRuntime/SessionOptions.shared.cs

@@ -430,16 +430,10 @@ public IntPtr Appender(IntPtr handle, IntPtr[] optKeys, IntPtr[] optValues, UInt
         /// <summary>
         /// Append QNN, SNPE or XNNPACK execution provider
         /// </summary>
-        /// <param name="providerName">Execution provider to add. 'QNN', 'SNPE' or 'XNNPACK' are currently supported.</param>
+        /// <param name="providerName">Execution provider to add. 'QNN', 'SNPE' 'XNNPACK', 'CoreML and 'AZURE are currently supported.</param>
         /// <param name="providerOptions">Optional key/value pairs to specify execution provider options.</param>
         public void AppendExecutionProvider(string providerName, Dictionary<string, string> providerOptions = null)
         {
-            if (providerName != "SNPE" && providerName != "XNNPACK" && providerName != "QNN" && providerName != "AZURE")
-            {
-                throw new NotSupportedException(
-                    "Only QNN, SNPE, XNNPACK and AZURE execution providers can be enabled by this method.");
-            }
-
             if (providerOptions == null)
             {
                 providerOptions = new Dictionary<string, string>();

csharp/test/Microsoft.ML.OnnxRuntime.Tests.Common/InferenceTest.cs

@@ -179,6 +179,12 @@ public void TestSessionOptions()
                 ex = Assert.Throws<OnnxRuntimeException>(() => { opt.AppendExecutionProvider("QNN"); });
                 Assert.Contains("QNN execution provider is not supported in this build", ex.Message);
 #endif
+#if USE_COREML
+                opt.AppendExecutionProvider("CoreML");
+#else
+                ex = Assert.Throws<OnnxRuntimeException>(() => { opt.AppendExecutionProvider("CoreML"); });
+                Assert.Contains("CoreML execution provider is not supported in this build", ex.Message);
+#endif
 
                 opt.AppendExecutionProvider_CPU(1);
             }
@@ -2041,7 +2047,7 @@ public SkipNonPackageTests()
         }
 
         // Test hangs on mobile.
-#if !(ANDROID || IOS)  
+#if !(ANDROID || IOS)
         [Fact(DisplayName = "TestModelRunAsyncTask")]
         private async Task TestModelRunAsyncTask()
         {

include/onnxruntime/core/providers/coreml/coreml_provider_factory.h

@@ -41,6 +41,14 @@ enum COREMLFlags {
   COREML_FLAG_LAST = COREML_FLAG_USE_CPU_AND_GPU,
 };
 
+// MLComputeUnits can be one of the following values:
+// 'MLComputeUnitsCPUAndNeuralEngine|MLComputeUnitsCPUAndGPU|MLComputeUnitsCPUOnly|MLComputeUnitsAll'
+static const char* const kCoremlProviderOption_MLComputeUnits = "MLComputeUnits";
+static const char* const kCoremlProviderOption_MLModelFormat = "MLModelFormat";
+static const char* const kCoremlProviderOption_MLAllowStaticInputShapes = "MLAllowStaticInputShapes";
+static const char* const kCoremlProviderOption_MLEnableOnSubgraphs = "MLEnableOnSubgraphs";
+static const char* const kCoremlProviderOption_MLModelCacheDir = "MLModelCacheDir";
+
 #ifdef __cplusplus
 extern "C" {
 #endif

java/src/main/java/ai/onnxruntime/OrtSession.java

@@ -1323,6 +1323,18 @@ public void addQnn(Map<String, String> providerOptions) throws OrtException {
       addExecutionProvider(qnnProviderName, providerOptions);
     }
 
+    /**
+     * Adds CoreML as an execution backend.
+     *
+     * @param providerOptions Configuration options for the CoreML backend. Refer to the CoreML
+     *     execution provider's documentation.
+     * @throws OrtException If there was an error in native code.
+     */
+    public void addCoreML(Map<String, String> providerOptions) throws OrtException {
+      String CoreMLProviderName = "CoreML";
+      addExecutionProvider(CoreMLProviderName, providerOptions);
+    }
+
     private native void setExecutionMode(long apiHandle, long nativeHandle, int mode)
         throws OrtException;
 

objectivec/include/ort_coreml_execution_provider.h

@@ -70,7 +70,17 @@
  */
 - (BOOL)appendCoreMLExecutionProviderWithOptions:(ORTCoreMLExecutionProviderOptions*)options
                                            error:(NSError**)error;
-
+/**
+ * Enables the CoreML execution provider in the session configuration options.
+ * It is appended to the execution provider list which is ordered by
+ * decreasing priority.
+ *
+ * @param provider_options The CoreML execution provider options in dict.
+ * @param error Optional error information set if an error occurs.
+ * @return Whether the provider was enabled successfully.
+ */
+- (BOOL)appendCoreMLExecutionProviderWithOptions_v2:(NSDictionary*)provider_options
+                                              error:(NSError**)error;
 @end
 
 NS_ASSUME_NONNULL_END

objectivec/ort_coreml_execution_provider.mm

@@ -43,6 +43,21 @@ - (BOOL)appendCoreMLExecutionProviderWithOptions:(ORTCoreMLExecutionProviderOpti
 #endif
 }
 
+- (BOOL)appendCoreMLExecutionProviderWithOptions_v2:(NSDictionary*)provider_options
+                                               error:(NSError**)error {
+#if ORT_OBJC_API_COREML_EP_AVAILABLE
+  try {
+    return [self appendExecutionProvider:@"CoreML" providerOptions:provider_options error:error];
+  }
+  ORT_OBJC_API_IMPL_CATCH_RETURNING_BOOL(error);
+
+#else  // !ORT_OBJC_API_COREML_EP_AVAILABLE
+  static_cast<void>(provider_options);
+  ORTSaveCodeAndDescriptionToError(ORT_FAIL, "CoreML execution provider is not enabled.", error);
+  return NO;
+#endif
+}
+
 @end
 
 NS_ASSUME_NONNULL_END

objectivec/test/ort_session_test.mm

@@ -223,6 +223,29 @@ - (void)testAppendCoreMLEP {
   ORTAssertNullableResultSuccessful(session, err);
 }
 
+
+- (void)testAppendCoreMLEP_v2 {
+  NSError* err = nil;
+  ORTSessionOptions* sessionOptions = [ORTSessionTest makeSessionOptions];
+  NSDictionary* provider_options = @{@"MLEnableOnSubgraphs" : @"1"};// set an arbitrary option
+
+  BOOL appendResult = [sessionOptions appendCoreMLExecutionProviderWithOptions_v2:provider_options
+                                                                         error:&err];
+
+  if (!ORTIsCoreMLExecutionProviderAvailable()) {
+    ORTAssertBoolResultUnsuccessful(appendResult, err);
+    return;
+  }
+
+  ORTAssertBoolResultSuccessful(appendResult, err);
+
+  ORTSession* session = [[ORTSession alloc] initWithEnv:self.ortEnv
+                                              modelPath:[ORTSessionTest getAddModelPath]
+                                         sessionOptions:sessionOptions
+                                                  error:&err];
+  ORTAssertNullableResultSuccessful(session, err);
+}
+
 - (void)testAppendXnnpackEP {
   NSError* err = nil;
   ORTSessionOptions* sessionOptions = [ORTSessionTest makeSessionOptions];

onnxruntime/core/providers/coreml/coreml_execution_provider.cc

@@ -23,17 +23,17 @@ namespace onnxruntime {
 
 constexpr const char* COREML = "CoreML";
 
-CoreMLExecutionProvider::CoreMLExecutionProvider(uint32_t coreml_flags)
+CoreMLExecutionProvider::CoreMLExecutionProvider(const CoreMLOptions& options)
     : IExecutionProvider{onnxruntime::kCoreMLExecutionProvider},
-      coreml_flags_(coreml_flags),
+      coreml_flags_(options.coreml_flags),
       coreml_version_(coreml::util::CoreMLVersion()) {
   LOGS_DEFAULT(VERBOSE) << "CoreML version: " << coreml_version_;
   if (coreml_version_ < MINIMUM_COREML_VERSION) {
     LOGS_DEFAULT(ERROR) << "CoreML EP is not supported on this platform.";
   }
 
   // check if only one flag is set
-  if ((coreml_flags & COREML_FLAG_USE_CPU_ONLY) && (coreml_flags & COREML_FLAG_USE_CPU_AND_GPU)) {
+  if ((coreml_flags_ & COREML_FLAG_USE_CPU_ONLY) && (coreml_flags_ & COREML_FLAG_USE_CPU_AND_GPU)) {
     // multiple device options selected
     ORT_THROW(
         "Multiple device options selected, you should use at most one of the following options:"

onnxruntime/core/providers/coreml/coreml_execution_provider.h

@@ -12,9 +12,14 @@
 class Model;
 }
 
+struct CoreMLOptions {
+  uint32_t coreml_flags = 0;
+  std::string cache_path;
+};
+
 class CoreMLExecutionProvider : public IExecutionProvider {
  public:
-  CoreMLExecutionProvider(uint32_t coreml_flags);
+  CoreMLExecutionProvider(const CoreMLOptions& options);
   virtual ~CoreMLExecutionProvider();
 
   std::vector<std::unique_ptr<ComputeCapability>>

onnxruntime/core/providers/coreml/coreml_provider_factory.cc

@@ -9,21 +9,77 @@
 using namespace onnxruntime;
 
 namespace onnxruntime {
+
+namespace {
+CoreMLOptions ParseProviderOption(const ProviderOptions& options) {
+  CoreMLOptions coreml_options;
+  const std::unordered_map<std::string, COREMLFlags> available_computeunits_options = {
+      {"MLComputeUnitsCPUAndNeuralEngine", COREML_FLAG_ONLY_ENABLE_DEVICE_WITH_ANE},
+      {"MLComputeUnitsCPUAndGPU", COREML_FLAG_USE_CPU_AND_GPU},
+      {"MLComputeUnitsCPUOnly", COREML_FLAG_USE_CPU_ONLY},
+      {"MLComputeUnitsAll", COREML_FLAG_USE_NONE},
+  };
+  const std::unordered_map<std::string, COREMLFlags> available_modelformat_options = {
+      {"MLProgram", COREML_FLAG_CREATE_MLPROGRAM},
+      {"NeuralNetwork", COREML_FLAG_USE_NONE},
+  };
+  std::unordered_set<std::string> valid_options = {
+      kCoremlProviderOption_MLComputeUnits,
+      kCoremlProviderOption_MLModelFormat,
+      kCoremlProviderOption_MLAllowStaticInputShapes,
+      kCoremlProviderOption_MLEnableOnSubgraphs,
+      kCoremlProviderOption_MLModelCacheDir,
+  };
+  // Validate the options
+  for (const auto& option : options) {
+    if (valid_options.find(option.first) == valid_options.end()) {
+      ORT_THROW("Unknown option: ", option.first);
+    }
+    if (kCoremlProviderOption_MLComputeUnits == option.first) {
+      if (available_computeunits_options.find(option.second) == available_computeunits_options.end()) {
+        ORT_THROW("Invalid value for option ", option.first, ": ", option.second);
+      }else {
+        coreml_options.coreml_flags |= available_computeunits_options.at(option.second);
+      }
+    } else if (kCoremlProviderOption_MLModelFormat == option.first) {
+      if (available_modelformat_options.find(option.second) == available_modelformat_options.end()) {
+        ORT_THROW("Invalid value for option ", option.first, ": ", option.second);
+      } else {
+        coreml_options.coreml_flags |= available_modelformat_options.at(option.second);
+      }
+    } else if (kCoremlProviderOption_MLAllowStaticInputShapes == option.first) {
+      coreml_options.coreml_flags |= COREML_FLAG_ONLY_ALLOW_STATIC_INPUT_SHAPES;
+    } else if (kCoremlProviderOption_MLEnableOnSubgraphs == option.first) {
+      coreml_options.coreml_flags |= COREML_FLAG_ENABLE_ON_SUBGRAPH;
+    } else if (kCoremlProviderOption_MLModelCacheDir == option.first) {
+      coreml_options.cache_path = option.second;
+    }
+  }
+
+  return coreml_options;
+}
+}  // namespace
 struct CoreMLProviderFactory : IExecutionProviderFactory {
-  CoreMLProviderFactory(uint32_t coreml_flags)
-      : coreml_flags_(coreml_flags) {}
+  CoreMLProviderFactory(const CoreMLOptions& options)
+      : options_(options) {}
   ~CoreMLProviderFactory() override {}
 
   std::unique_ptr<IExecutionProvider> CreateProvider() override;
-  uint32_t coreml_flags_;
+  CoreMLOptions options_;
 };
 
 std::unique_ptr<IExecutionProvider> CoreMLProviderFactory::CreateProvider() {
-  return std::make_unique<CoreMLExecutionProvider>(coreml_flags_);
+  return std::make_unique<CoreMLExecutionProvider>(options_);
 }
 
 std::shared_ptr<IExecutionProviderFactory> CoreMLProviderFactoryCreator::Create(uint32_t coreml_flags) {
-  return std::make_shared<onnxruntime::CoreMLProviderFactory>(coreml_flags);
+  CoreMLOptions coreml_options;
+  coreml_options.coreml_flags = coreml_flags;
+  return std::make_shared<onnxruntime::CoreMLProviderFactory>(coreml_options);
+}
+
+std::shared_ptr<IExecutionProviderFactory> CoreMLProviderFactoryCreator::Create(const ProviderOptions& options) {
+  return std::make_shared<onnxruntime::CoreMLProviderFactory>(ParseProviderOption(options));
 }
 }  // namespace onnxruntime
 

onnxruntime/core/providers/coreml/coreml_provider_factory_creator.h

@@ -5,10 +5,12 @@
 
 #include <memory>
 
+#include "core/framework/provider_options.h"
 #include "core/providers/providers.h"
 
 namespace onnxruntime {
 struct CoreMLProviderFactoryCreator {
   static std::shared_ptr<IExecutionProviderFactory> Create(uint32_t coreml_flags);
+  static std::shared_ptr<IExecutionProviderFactory> Create(const ProviderOptions& options);
 };
 }  // namespace onnxruntime

onnxruntime/core/session/provider_registration.cc

@@ -155,11 +155,21 @@ ORT_API_STATUS_IMPL(OrtApis::SessionOptionsAppendExecutionProvider,
     status = create_not_supported_status();
 #endif
   } else if (strcmp(provider_name, "VitisAI") == 0) {
+#ifdef USE_VITISAI
     status = OrtApis::SessionOptionsAppendExecutionProvider_VitisAI(options, provider_options_keys, provider_options_values, num_keys);
+#else
+    status = create_not_supported_status();
+#endif
+  } else if (strcmp(provider_name, "CoreML") == 0) {
+#if defined(USE_COREML)
+    options->provider_factories.push_back(CoreMLProviderFactoryCreator::Create(provider_options));
+#else
+    status = create_not_supported_status();
+#endif
   } else {
     ORT_UNUSED_PARAMETER(options);
     status = OrtApis::CreateStatus(ORT_INVALID_ARGUMENT,
-                                   "Unknown provider name. Currently supported values are 'OPENVINO', 'SNPE', 'XNNPACK', 'QNN', 'WEBNN' and 'AZURE'");
+                                   "Unknown provider name. Currently supported values are 'OPENVINO', 'SNPE', 'XNNPACK', 'QNN', 'WEBNN' ,'CoreML', and 'AZURE'");
   }
 
   return status;

onnxruntime/python/onnxruntime_pybind_schema.cc

@@ -73,7 +73,7 @@ void addGlobalSchemaFunctions(pybind11::module& m) {
             onnxruntime::RknpuProviderFactoryCreator::Create(),
 #endif
 #ifdef USE_COREML
-            onnxruntime::CoreMLProviderFactoryCreator::Create(0),
+            onnxruntime::CoreMLProviderFactoryCreator::Create(ProviderOptions{}),
 #endif
 #ifdef USE_XNNPACK
             onnxruntime::XnnpackProviderFactoryCreator::Create(ProviderOptions{}, nullptr),

onnxruntime/python/onnxruntime_pybind_state.cc

@@ -1222,6 +1222,9 @@ std::unique_ptr<IExecutionProvider> CreateExecutionProviderInstance(
         if (flags_str.find("COREML_FLAG_CREATE_MLPROGRAM") != std::string::npos) {
           coreml_flags |= COREMLFlags::COREML_FLAG_CREATE_MLPROGRAM;
         }
+      } else {
+        // read from provider_options
+        return onnxruntime::CoreMLProviderFactoryCreator::Create(options)->CreateProvider();
       }
     }
 

onnxruntime/test/onnx/main.cc

@@ -631,7 +631,7 @@ int real_main(int argc, char* argv[], Ort::Env& env) {
     }
     if (enable_coreml) {
 #ifdef USE_COREML
-      Ort::ThrowOnError(OrtSessionOptionsAppendExecutionProvider_CoreML(sf, 0));
+      sf.AppendExecutionProvider("CoreML", {});
 #else
       fprintf(stderr, "CoreML is not supported in this build");
       return -1;