Imported Upstream version 1.20.0upstream/1.20.0submit/tizen/20220415.103159

1 files changed, 104 insertions, 0 deletions

diff --git a/compiler/mio-tflite260/src/Helper.cpp b/compiler/mio-tflite260/src/Helper.cpp
new file mode 100644
index 000000000..9669058ea
--- /dev/null
+++ b/compiler/mio-tflite260/src/Helper.cpp
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All Rights Reserved
+ * 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 "mio_tflite260/Helper.h"
+
+#include <sstream>
+
+namespace mio
+{
+namespace tflite
+{
+
+/**
+ * This will provide v3/v3a format neutral BuiltinOperator
+ *
+ * This function referenced
+ * https://github.com/tensorflow/tensorflow/blob/7d12007d7800d3714a02e05059f3ea602d1aec78/tensorflow/lite/schema/schema_utils.cc
+ */
+::tflite::BuiltinOperator builtin_code_neutral(const ::tflite::OperatorCode *opcode)
+{
+  assert(opcode != nullptr);
+  return std::max(opcode->builtin_code(),
+                  static_cast<::tflite::BuiltinOperator>(opcode->deprecated_builtin_code()));
+}
+
+bool is_valid(const ::tflite::OperatorCode *opcode)
+{
+  // Valid Range : 0 <= deprecated_builtin_code <= 127
+  const int8_t deprecated_builtin_code = opcode->deprecated_builtin_code();
+  if (deprecated_builtin_code < 0)
+    return false;
+
+  const ::tflite::BuiltinOperator builtin_code = opcode->builtin_code();
+  if (!(::tflite::BuiltinOperator_MIN <= builtin_code &&
+        builtin_code <= ::tflite::BuiltinOperator_MAX))
+    return false;
+
+  return true;
+}
+
+bool is_custom(const ::tflite::OperatorCode *opcode)
+{
+  ::tflite::BuiltinOperator code = builtin_code_neutral(opcode);
+  return (code == ::tflite::BuiltinOperator_CUSTOM);
+}
+
+std::string opcode_name(const ::tflite::OperatorCode *opcode)
+{
+  assert(opcode);
+
+  if (!is_valid(opcode))
+  {
+    std::ostringstream oss;
+    oss << "(invalid)";
+    return oss.str();
+  }
+
+  if (is_custom(opcode))
+  {
+    if (!opcode->custom_code())
+      return "(invalid custom)";
+
+    std::string custom_op = "CUSTOM(";
+    custom_op += opcode->custom_code()->c_str();
+    custom_op += ")";
+    return custom_op;
+  }
+
+  ::tflite::BuiltinOperator code = builtin_code_neutral(opcode);
+  return ::tflite::EnumNameBuiltinOperator(code);
+}
+
+const char *tensor_type(const ::tflite::Tensor *tensor)
+{
+  return ::tflite::EnumNameTensorType(tensor->type());
+}
+
+const char *tensor_name(const ::tflite::Tensor *tensor)
+{
+  static const char *kEmptyTensorName = "(noname)";
+
+  auto name = tensor->name();
+  if (name)
+    return name->c_str();
+
+  return kEmptyTensorName;
+}
+
+} // namespace tflite
+} // namespace mio