1 files changed, 166 insertions, 0 deletions
diff --git a/compiler/tfl-inspect/src/Reader.cpp b/compiler/tfl-inspect/src/Reader.cpp
new file mode 100644
index 000000000..7bd2fe2c6
--- /dev/null
+++ b/compiler/tfl-inspect/src/Reader.cpp
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. 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 "Reader.h"
+
+#include <sstream>
+#include <string>
+
+namespace tflinspect
+{
+
+bool is_valid(const tflite::OperatorCode *opcode)
+{
+  tflite::BuiltinOperator code = opcode->builtin_code();
+  return (tflite::BuiltinOperator_MIN <= code && code <= tflite::BuiltinOperator_MAX);
+}
+
+bool is_custom(const tflite::OperatorCode *opcode)
+{
+  tflite::BuiltinOperator code = opcode->builtin_code();
+  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)";
+
+    return opcode->custom_code()->c_str();
+  }
+
+  tflite::BuiltinOperator code = opcode->builtin_code();
+  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;
+}
+
+Reader::Reader(const tflite::Model *model)
+{
+  _subgraphs = model->subgraphs();
+  _buffers = model->buffers();
+
+  auto opcodes = model->operator_codes();
+  for (const ::tflite::OperatorCode *opcode : *opcodes)
+  {
+    _op_codes.push_back(opcode);
+  }
+}
+
+size_t Reader::buffer_info(uint32_t buf_idx, const uint8_t **buff_data)
+{
+  if (buff_data != nullptr)
+  {
+    *buff_data = nullptr;
+  }
+
+  if (buf_idx == 0)
+    return 0;
+
+  if (auto *buffer = (*_buffers)[buf_idx])
+  {
+    if (auto *array = buffer->data())
+    {
+      if (size_t size = array->size())
+      {
+        if (buff_data != nullptr)
+        {
+          *buff_data = reinterpret_cast<const uint8_t *>(array->data());
+        }
+        return size;
+      }
+    }
+  }
+
+  return 0;
+}
+
+tflite::BuiltinOperator Reader::builtin_code(const tflite::Operator *op) const
+{
+  uint32_t index = op->opcode_index();
+  assert(index < _op_codes.size());
+  const tflite::OperatorCode *opcode = _op_codes.at(index);
+
+  return opcode->builtin_code();
+}
+
+std::string Reader::opcode_name(const tflite::Operator *op) const
+{
+  uint32_t index = op->opcode_index();
+  assert(index < _op_codes.size());
+  const tflite::OperatorCode *opcode = _op_codes.at(index);
+
+  if (!is_valid(opcode))
+  {
+    std::ostringstream oss;
+    oss << "(invalid: " << index << ")";
+    return oss.str();
+  }
+
+  return tflinspect::opcode_name(opcode);
+}
+
+bool Reader::select_subgraph(uint32_t sgindex)
+{
+  _tensors = nullptr;
+  _operators = nullptr;
+
+  _inputs.clear();
+  _outputs.clear();
+
+  if (_subgraphs->Length() <= sgindex)
+  {
+    assert(false);
+    return false;
+  }
+
+  const tflite::SubGraph *subgraph = (*_subgraphs)[sgindex];
+
+  _tensors = subgraph->tensors();
+  _operators = subgraph->operators();
+
+  _inputs = as_index_vector(subgraph->inputs());
+  _outputs = as_index_vector(subgraph->outputs());
+
+  return true;
+}
+
+} // namespace tflinspect