chore: import upstream snapshot with attribution

tensorflow/lite/experimental/acceleration/configuration/BUILD

@@ -0,0 +1,224 @@
+# Copyright 2019 The TensorFlow 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.
+# ==============================================================================
+
+# buildifier: disable=out-of-order-load
+
+load("@rules_cc//cc:cc_library.bzl", "cc_library")
+load("@com_google_protobuf//bazel:proto_library.bzl", "proto_library")
+load("@flatbuffers//:build_defs.bzl", "DEFAULT_FLATC_ARGS", "flatbuffer_android_library", "flatbuffer_cc_library", "flatbuffer_java_library")
+load("//tensorflow:tensorflow.default.bzl", "get_compatible_with_portable")
+load("//tensorflow/lite:build_def.bzl", "tflite_copts", "tflite_copts_warnings")
+load("//tensorflow/lite:special_rules.bzl", "nnapi_plugin_impl_visibility_allowlist", "tflite_portable_test_suite")
+load("//tensorflow/lite/core/shims:cc_library_with_tflite.bzl", "cc_library_with_tflite")
+# copybara:uncomment load("//tools/build_defs/proto/cpp:cc_proto_library.bzl", "cc_proto_library")
+
+package(
+    # copybara:uncomment default_applicable_licenses = ["//tensorflow:LICENSE"],
+    default_visibility = [
+        "//visibility:public",
+    ],
+    licenses = ["notice"],
+)
+
+# Generate a C++ header containing the contents of the FlatBuffer schema
+# as a char array literal.  This is potentially useful for embedding in programs
+# (e.g. for JSON parsing using that schema).
+genrule(
+    name = "configuration_fbs_contents_cc",
+    srcs = ["configuration.fbs"],
+    outs = ["configuration_fbs_contents-inl.h"],
+    cmd = """
+      echo 'constexpr char configuration_fbs_contents[] = R"Delimiter(' > $(@)
+      cat < $(<) >> $(@)
+      echo ')Delimiter";' >> $(@)
+    """,
+    compatible_with = get_compatible_with_portable(),
+)
+
+genrule(
+    name = "configuration.fbs-backwards-compat-stub",
+    srcs = ["//tensorflow/lite/acceleration/configuration:configuration.fbs"],
+    outs = ["configuration.fbs"],
+    cmd = "cp $< $@",
+    compatible_with = get_compatible_with_portable(),
+)
+
+proto_library(
+    name = "configuration_proto",
+    srcs = ["configuration.proto"],
+    exports = ["//tensorflow/lite/acceleration/configuration:configuration_proto"],
+    deps = ["//tensorflow/lite/acceleration/configuration:configuration_proto"],
+)
+
+alias(
+    name = "configuration_java_proto_lite",
+    actual = "//tensorflow/lite/acceleration/configuration:configuration_java_proto_lite",
+)
+
+cc_proto_library(
+    name = "configuration_cc_proto",
+    deps = [":configuration_proto"],
+)
+
+flatbuffer_cc_library(
+    name = "configuration_fbs",
+    srcs = [":configuration.fbs"],
+    compatible_with = get_compatible_with_portable(),
+    flatc_args = DEFAULT_FLATC_ARGS + ["--gen-compare"],
+)
+
+flatbuffer_java_library(
+    name = "configuration_fbs_java",
+    srcs = [":configuration.fbs"],
+)
+
+flatbuffer_android_library(
+    name = "configuration_fbs_android",
+    srcs = [":configuration.fbs"],
+)
+
+cc_library(
+    name = "proto_to_flatbuffer",
+    hdrs = ["proto_to_flatbuffer.h"],
+    deps = [
+        "//tensorflow/lite/acceleration/configuration:proto_to_flatbuffer",
+    ],
+)
+
+cc_library(
+    name = "flatbuffer_to_proto",
+    hdrs = ["flatbuffer_to_proto.h"],
+    deps = [
+        "//tensorflow/lite/acceleration/configuration:flatbuffer_to_proto",
+    ],
+)
+
+cc_library_with_tflite(
+    name = "delegate_registry",
+    hdrs = ["delegate_registry.h"],
+    compatible_with = get_compatible_with_portable(),
+    tflite_deps = [
+        "//tensorflow/lite/acceleration/configuration:delegate_registry",
+    ],
+)
+
+cc_library_with_tflite(
+    name = "delegate_plugin_converter",
+    hdrs = ["delegate_plugin_converter.h"],
+    tflite_deps = [
+        "//tensorflow/lite/acceleration/configuration:delegate_plugin_converter",
+    ],
+)
+
+cc_library(
+    name = "nnapi_plugin",
+    compatible_with = get_compatible_with_portable(),
+    deps = [
+        ":nnapi_plugin_impl",
+    ],
+)
+
+cc_library(
+    name = "nnapi_plugin_impl",
+    hdrs = ["nnapi_plugin.h"],
+    compatible_with = get_compatible_with_portable(),
+    visibility = nnapi_plugin_impl_visibility_allowlist(),
+    deps = [
+        "//tensorflow/lite/core/acceleration/configuration:nnapi_plugin",
+    ],
+)
+
+cc_library(
+    name = "hexagon_plugin",
+    srcs = ["hexagon_plugin.cc"],
+    deps = [
+        ":configuration_fbs",
+        "//tensorflow/lite/core/acceleration/configuration:delegate_registry",
+        "@com_google_absl//absl/memory",
+    ] + select({
+        "@platforms//cpu:aarch64": [
+            "//tensorflow/lite/delegates/hexagon:hexagon_delegate",
+        ],
+        "@platforms//cpu:armv7": [
+            "//tensorflow/lite/delegates/hexagon:hexagon_delegate",
+        ],
+        "//conditions:default": [],
+    }),
+    alwayslink = 1,  # For registration to always run.
+)
+
+cc_library(
+    name = "gpu_plugin",
+    deps = [
+        ":gpu_plugin_impl",
+    ],
+)
+
+common_copts = tflite_copts() + tflite_copts_warnings()
+
+cc_library(
+    name = "gpu_plugin_impl",
+    hdrs = ["gpu_plugin.h"],
+    copts = common_copts + select({
+        "//tensorflow:ios": [
+            "-xobjective-c++",
+        ],
+        "//tensorflow:macos_arm64": [
+            "-xobjective-c++",
+        ],
+        "//conditions:default": [],
+    }),
+    deps = [
+        "//tensorflow/lite/acceleration/configuration:gpu_plugin_impl",
+    ],
+)
+
+cc_library(
+    name = "xnnpack_plugin",
+    deps = [
+        "//tensorflow/lite/acceleration/configuration:xnnpack_plugin",
+    ],
+)
+
+cc_library(
+    name = "coreml_plugin",
+    srcs = ["coreml_plugin.cc"],
+    deps = [
+        ":configuration_fbs",
+        "//tensorflow/lite:minimal_logging",
+        "//tensorflow/lite/core/acceleration/configuration:delegate_registry",
+        "@com_google_absl//absl/memory",
+    ] + select({
+        "//tensorflow:macos": [
+            "//tensorflow/lite/delegates/coreml:coreml_delegate",
+        ],
+        "//tensorflow:ios": [
+            "//tensorflow/lite/delegates/coreml:coreml_delegate",
+        ],
+        "//conditions:default": [],
+    }),
+    alwayslink = 1,  # For registration to always run.
+)
+
+# TODO(b/260582614): Add support for TF Lite in Play Services.
+cc_library(
+    name = "stable_delegate_plugin",
+    hdrs = ["stable_delegate_plugin.h"],
+    deps = [
+        "//tensorflow/lite/acceleration/configuration:stable_delegate_plugin",
+    ],
+)
+
+tflite_portable_test_suite()

tensorflow/lite/experimental/acceleration/configuration/build_defs.bzl

@@ -0,0 +1,43 @@
+# Copyright 2022 The TensorFlow 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.
+# ==============================================================================
+"""Build macros for checking ABI compatibility."""
+
+load("@flatbuffers//:build_defs.bzl", "flatc_path")
+
+def flatbuffer_schema_compat_test(name, ref_schema, schema):
+    """Generates a test for schema binary compatibility.
+
+    Generates a test that the specified schema file is binary backwards
+    compatible with a reference schema (e.g. a previous version of the
+    schema).
+
+    Note: currently this build macro requires that the schema be a single
+    fully self-contained .fbs file; it does not yet support includes.
+    """
+
+    native.genrule(
+        name = name + "_gen",
+        srcs = [ref_schema, schema],
+        outs = [name + "_test.sh"],
+        tools = [flatc_path],
+        cmd = ("echo $(rootpath {}) --conform $(rootpath {}) $(rootpath {}) > $@"
+            .format(flatc_path, ref_schema, schema)),
+    )
+
+    native.sh_test(
+        name = name,
+        srcs = [name + "_test.sh"],
+        data = [flatc_path, ref_schema, schema],
+    )

tensorflow/lite/experimental/acceleration/configuration/c/BUILD

@@ -0,0 +1,76 @@
+# Copyright 2021 The TensorFlow 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.
+# ==============================================================================
+
+# C API for delegate plugins.
+
+load("//tensorflow:tensorflow.default.bzl", "get_compatible_with_portable")
+load(
+    "//tensorflow/lite/core/shims:cc_library_with_tflite.bzl",
+    "cc_library_with_tflite_with_c_headers_test",
+)
+
+package(
+    # copybara:uncomment default_applicable_licenses = ["//tensorflow:LICENSE"],
+    default_visibility = ["//visibility:private"],
+    licenses = ["notice"],
+)
+
+cc_library_with_tflite_with_c_headers_test(
+    name = "delegate_plugin",
+    hdrs = ["delegate_plugin.h"],
+    compatible_with = get_compatible_with_portable(),
+    generate_opaque_delegate_target = True,
+    tflite_deps = [
+        "//tensorflow/lite/acceleration/configuration/c:delegate_plugin",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+cc_library_with_tflite_with_c_headers_test(
+    name = "nnapi_plugin",
+    hdrs = ["nnapi_plugin.h"],
+    tflite_deps = [
+        "//tensorflow/lite/acceleration/configuration/c:nnapi_plugin",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+cc_library_with_tflite_with_c_headers_test(
+    name = "gpu_plugin",
+    hdrs = ["gpu_plugin.h"],
+    tflite_deps = [
+        "//tensorflow/lite/acceleration/configuration/c:gpu_plugin",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+cc_library_with_tflite_with_c_headers_test(
+    name = "xnnpack_plugin",
+    hdrs = ["xnnpack_plugin.h"],
+    tflite_deps = [
+        "//tensorflow/lite/acceleration/configuration/c:xnnpack_plugin",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+cc_library_with_tflite_with_c_headers_test(
+    name = "stable_delegate",
+    hdrs = ["stable_delegate.h"],
+    generate_opaque_delegate_target = True,
+    tflite_deps = [
+        "//tensorflow/lite/acceleration/configuration/c:stable_delegate",
+    ],
+    visibility = ["//visibility:public"],
+)

tensorflow/lite/experimental/acceleration/configuration/c/delegate_plugin.h

@@ -0,0 +1,25 @@
+/* Copyright 2021 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_DELEGATE_PLUGIN_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_DELEGATE_PLUGIN_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/acceleration/configuration/c/delegate_plugin.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/acceleration/configuration/c/delegate_plugin.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_DELEGATE_PLUGIN_H_

tensorflow/lite/experimental/acceleration/configuration/c/gpu_plugin.h

@@ -0,0 +1,25 @@
+/* Copyright 2022 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_GPU_PLUGIN_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_GPU_PLUGIN_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/acceleration/configuration/c/gpu_plugin.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/acceleration/configuration/c/gpu_plugin.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_GPU_PLUGIN_H_

tensorflow/lite/experimental/acceleration/configuration/c/nnapi_plugin.h

@@ -0,0 +1,25 @@
+/* Copyright 2020 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_NNAPI_PLUGIN_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_NNAPI_PLUGIN_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/acceleration/configuration/c/nnapi_plugin.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/acceleration/configuration/c/nnapi_plugin.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_NNAPI_PLUGIN_H_

tensorflow/lite/experimental/acceleration/configuration/c/stable_delegate.h

@@ -0,0 +1,25 @@
+/* Copyright 2022 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_STABLE_DELEGATE_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_STABLE_DELEGATE_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/acceleration/configuration/c/stable_delegate.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/acceleration/configuration/c/stable_delegate.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_STABLE_DELEGATE_H_

tensorflow/lite/experimental/acceleration/configuration/c/xnnpack_plugin.h

@@ -0,0 +1,25 @@
+/* Copyright 2020 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_XNNPACK_PLUGIN_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_XNNPACK_PLUGIN_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/acceleration/configuration/c/xnnpack_plugin.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/acceleration/configuration/c/xnnpack_plugin.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_C_XNNPACK_PLUGIN_H_

tensorflow/lite/experimental/acceleration/configuration/configuration.proto

@@ -0,0 +1,20 @@
+// Copyright 2026 The TensorFlow 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.
+// ==============================================================================
+
+syntax = "proto2";
+
+package tflite.proto;
+
+import public "tensorflow/lite/acceleration/configuration/configuration.proto";

tensorflow/lite/experimental/acceleration/configuration/coreml_plugin.cc

@@ -0,0 +1,73 @@
+/* Copyright 2020 The TensorFlow 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.
+==============================================================================*/
+#include <memory>
+
+#include "absl/memory/memory.h"
+#include "tensorflow/lite/acceleration/configuration/configuration_generated.h"
+#include "tensorflow/lite/core/acceleration/configuration/delegate_registry.h"
+#include "tensorflow/lite/minimal_logging.h"
+
+// Guarding anyway although this file not expected to be compiled for non-Apple.
+#if defined(__APPLE__)
+#include "tensorflow/lite/delegates/coreml/coreml_delegate.h"
+
+namespace tflite {
+namespace delegates {
+class CoreMLPlugin : public DelegatePluginInterface {
+ public:
+  TfLiteDelegatePtr Create() override {
+    TfLiteDelegate* delegate_ptr = TfLiteCoreMlDelegateCreate(&options_);
+    TfLiteDelegatePtr delegate(delegate_ptr, [](TfLiteDelegate* delegate) {
+      TfLiteCoreMlDelegateDelete(delegate);
+    });
+    return delegate;
+  }
+  int GetDelegateErrno(TfLiteDelegate* /* from_delegate */) override {
+    return 0;
+  }
+  static std::unique_ptr<CoreMLPlugin> New(
+      const TFLiteSettings& tflite_settings) {
+    return absl::make_unique<CoreMLPlugin>(tflite_settings);
+  }
+  explicit CoreMLPlugin(const TFLiteSettings& tflite_settings) {
+    const CoreMLSettings* settings = tflite_settings.coreml_settings();
+    options_ = TfLiteCoreMlDelegateOptions({});
+    // Using the proto defaults if the settings were not set.
+    switch (settings->enabled_devices()) {
+      case tflite::CoreMLSettings_::EnabledDevices_DEVICES_ALL:
+        options_.enabled_devices = TfLiteCoreMlDelegateAllDevices;
+        break;
+      case tflite::CoreMLSettings_::EnabledDevices_DEVICES_WITH_NEURAL_ENGINE:
+        options_.enabled_devices = TfLiteCoreMlDelegateDevicesWithNeuralEngine;
+        break;
+      default:
+        TFLITE_LOG_PROD(TFLITE_LOG_ERROR, "Invalid devices enum: %d",
+                        settings->enabled_devices());
+    }
+    options_.coreml_version = settings->coreml_version();
+    options_.max_delegated_partitions = settings->max_delegated_partitions();
+    options_.min_nodes_per_partition = settings->min_nodes_per_partition();
+  }
+
+ private:
+  TfLiteCoreMlDelegateOptions options_;
+};
+
+TFLITE_REGISTER_DELEGATE_FACTORY_FUNCTION(CoreMLPlugin, CoreMLPlugin::New);
+
+}  // namespace delegates
+}  // namespace tflite
+
+#endif  // __APPLE__

tensorflow/lite/experimental/acceleration/configuration/delegate_plugin_converter.h

@@ -0,0 +1,25 @@
+/* Copyright 2021 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_DELEGATE_PLUGIN_CONVERTER_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_DELEGATE_PLUGIN_CONVERTER_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/acceleration/configuration/delegate_plugin_converter.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/acceleration/configuration/delegate_plugin_converter.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_DELEGATE_PLUGIN_CONVERTER_H_

tensorflow/lite/experimental/acceleration/configuration/delegate_registry.h

@@ -0,0 +1,25 @@
+/* Copyright 2021 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_DELEGATE_REGISTRY_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_DELEGATE_REGISTRY_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/acceleration/configuration/delegate_registry.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/acceleration/configuration/delegate_registry.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_DELEGATE_REGISTRY_H_

tensorflow/lite/experimental/acceleration/configuration/flatbuffer_to_proto.h

@@ -0,0 +1,25 @@
+/* Copyright 2021 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_FLATBUFFER_TO_PROTO_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_FLATBUFFER_TO_PROTO_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/acceleration/configuration/flatbuffer_to_proto.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/acceleration/configuration/flatbuffer_to_proto.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_FLATBUFFER_TO_PROTO_H_

tensorflow/lite/experimental/acceleration/configuration/gpu_plugin.h

@@ -0,0 +1,25 @@
+/* Copyright 2021 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_GPU_PLUGIN_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_GPU_PLUGIN_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/acceleration/configuration/gpu_plugin.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/acceleration/configuration/gpu_plugin.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_GPU_PLUGIN_H_

tensorflow/lite/experimental/acceleration/configuration/hexagon_plugin.cc

@@ -0,0 +1,77 @@
+/* Copyright 2020 The TensorFlow 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.
+==============================================================================*/
+#include <memory>
+
+#include "absl/memory/memory.h"
+#include "tensorflow/lite/acceleration/configuration/configuration_generated.h"
+#include "tensorflow/lite/core/acceleration/configuration/delegate_registry.h"
+
+#if defined(__ARM_ARCH)
+#include "tensorflow/lite/delegates/hexagon/hexagon_delegate.h"
+#endif
+
+namespace tflite {
+namespace delegates {
+class HexagonPlugin : public DelegatePluginInterface {
+ public:
+  TfLiteDelegatePtr Create() override {
+#if defined(__ARM_ARCH)
+    TfLiteHexagonInit();
+    auto* delegate_ptr = TfLiteHexagonDelegateCreate(&options_);
+    TfLiteDelegatePtr delegate(delegate_ptr, [](TfLiteDelegate* delegate) {
+      TfLiteHexagonDelegateDelete(delegate);
+      TfLiteHexagonTearDown();
+    });
+    return delegate;
+#else   // !defined(__ARM_ARCH)
+    return TfLiteDelegatePtr(nullptr, [](TfLiteDelegate*) {});
+#endif  // defined(__ARM_ARCH)
+  }
+  int GetDelegateErrno(TfLiteDelegate* /* from_delegate */) override {
+    return 0;
+  }
+  static std::unique_ptr<HexagonPlugin> New(
+      const TFLiteSettings& tflite_settings) {
+    return std::make_unique<HexagonPlugin>(tflite_settings);
+  }
+  explicit HexagonPlugin(const TFLiteSettings& tflite_settings) {
+    const HexagonSettings* settings = tflite_settings.hexagon_settings();
+#if defined(__ARM_ARCH)
+    options_ = TfLiteHexagonDelegateOptions({0});
+    if (settings) {
+      options_.debug_level = settings->debug_level();
+      options_.powersave_level = settings->powersave_level();
+      options_.print_graph_profile = settings->print_graph_profile();
+      options_.print_graph_debug = settings->print_graph_debug();
+      if (tflite_settings.max_delegated_partitions() >= 0) {
+        options_.max_delegated_partitions =
+            tflite_settings.max_delegated_partitions();
+      }
+    }
+#else
+    (void)settings;
+#endif
+  }
+
+ private:
+#if defined(__ARM_ARCH)
+  TfLiteHexagonDelegateOptions options_;
+#endif
+};
+
+TFLITE_REGISTER_DELEGATE_FACTORY_FUNCTION(HexagonPlugin, HexagonPlugin::New);
+
+}  // namespace delegates
+}  // namespace tflite

tensorflow/lite/experimental/acceleration/configuration/nnapi_plugin.h

@@ -0,0 +1,25 @@
+/* Copyright 2020 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_NNAPI_PLUGIN_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_NNAPI_PLUGIN_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/core/acceleration/configuration/nnapi_plugin.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/core/acceleration/configuration/nnapi_plugin.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_NNAPI_PLUGIN_H_

tensorflow/lite/experimental/acceleration/configuration/proto_to_flatbuffer.h

@@ -0,0 +1,25 @@
+/* Copyright 2020 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_PROTO_TO_FLATBUFFER_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_PROTO_TO_FLATBUFFER_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/acceleration/configuration/proto_to_flatbuffer.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/acceleration/configuration/proto_to_flatbuffer.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_PROTO_TO_FLATBUFFER_H_

tensorflow/lite/experimental/acceleration/configuration/stable_delegate_plugin.h

@@ -0,0 +1,25 @@
+/* Copyright 2022 The TensorFlow 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_STABLE_DELEGATE_PLUGIN_H_
+#define TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_STABLE_DELEGATE_PLUGIN_H_
+
+// This header file is no longer experimental.
+// Please use the non-experimental file instead.
+
+#include "tensorflow/lite/acceleration/configuration/stable_delegate_plugin.h"  // IWYU pragma: export
+
+// IWYU pragma: private, include "third_party/tensorflow/lite/acceleration/configuration/stable_delegate_plugin.h"
+
+#endif  // TENSORFLOW_LITE_EXPERIMENTAL_ACCELERATION_CONFIGURATION_STABLE_DELEGATE_PLUGIN_H_