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/*
* 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
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