[mio] Introduce mio-tflite12121

compiler/mio-tflite2121/CMakeLists.txt

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+nnas_find_package(FlatBuffers EXACT 2.0 QUIET)
+
+if(NOT FlatBuffers_FOUND)
+  message(STATUS "Build mio-tflite2121: FAILED (missing Flatbuffers 2.0)")
+  return()
+endif(NOT FlatBuffers_FOUND)
+
+nnas_find_package(TensorFlowSource EXACT 2.12.1 QUIET)
+
+if(NOT TensorFlowSource_FOUND)
+  message(STATUS "Build mio-tflite2121: FAILED (missing TensorFlowSource 2.12.1)")
+  return()
+endif(NOT TensorFlowSource_FOUND)
+
+message(STATUS "Build mio-tflite2121: TRUE")
+message(STATUS "Build mio-tflite2121: with ${TensorFlowSource_DIR}")
+
+set(SCHEMA_FILE "${TensorFlowSource_DIR}/tensorflow/lite/schema/schema.fbs")
+
+# NOTE Use copy of schema.fbs as to provide unified way for circle also
+add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/schema.fbs"
+  COMMAND ${CMAKE_COMMAND} -E copy "${SCHEMA_FILE}" schema.fbs
+  WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
+  DEPENDS "${SCHEMA_FILE}"
+)
+
+FlatBuffers_Target(mio_tflite2121
+  OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}/gen/mio/tflite"
+  INCLUDE_DIR "${CMAKE_CURRENT_BINARY_DIR}/gen"
+  SCHEMA_DIR "${CMAKE_CURRENT_BINARY_DIR}"
+  SCHEMA_FILES "schema.fbs"
+)
+
+add_executable(mio_tflite2121_example example.cpp)
+target_link_libraries(mio_tflite2121_example mio_tflite2121)
+
+# Temporay tflite validation tool to replace nnkit-tflite
+# TODO provide full tflite validation with runtime/interpreter
+add_executable(mio_tflite2121_validate example.cpp)
+target_link_libraries(mio_tflite2121_validate mio_tflite2121)
+
+file(GLOB_RECURSE SOURCES "src/*.cpp")
+file(GLOB_RECURSE TESTS "src/*.test.cpp")
+list(REMOVE_ITEM SOURCES ${TESTS})
+
+add_library(mio_tflite2121_helper STATIC ${SOURCES})
+target_include_directories(mio_tflite2121_helper PRIVATE src)
+target_include_directories(mio_tflite2121_helper PUBLIC include)
+target_link_libraries(mio_tflite2121_helper mio_tflite2121)
+
+if(NOT ENABLE_TEST)
+  return()
+endif(NOT ENABLE_TEST)
+
+nnas_find_package(GTest REQUIRED)
+
+GTest_AddTest(mio_tflite2121_helper_test ${TESTS})
+target_include_directories(mio_tflite2121_helper_test PRIVATE src)
+target_link_libraries(mio_tflite2121_helper_test mio_tflite2121)
+target_link_libraries(mio_tflite2121_helper_test mio_tflite2121_helper)

compiler/mio-tflite2121/README.md

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+# mio-tflite2121
+
+_mio-tflite2121_ provides a library to access TensorFlow lite model files with V2.12.1.

compiler/mio-tflite2121/example.cpp

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+/*
+ * Copyright (c) 2023 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.
+ */
+
+//
+// This example shows how to include and use "mio-tflite2121"
+//
+#include <mio/tflite/schema_generated.h>
+
+#include <fstream>
+#include <iostream>
+#include <vector>
+
+int main(int argc, char **argv)
+{
+  std::ifstream ifs(argv[1], std::ios_base::binary);
+  std::vector<char> buf(std::istreambuf_iterator<char>{ifs}, std::istreambuf_iterator<char>{});
+
+  flatbuffers::Verifier verifier{reinterpret_cast<uint8_t *>(buf.data()), buf.size()};
+
+  if (!tflite::VerifyModelBuffer(verifier))
+  {
+    std::cout << "Fail" << std::endl;
+    return 255;
+  }
+
+  std::cout << "Pass" << std::endl;
+  return 0;
+}

compiler/mio-tflite2121/include/mio_tflite2121/Helper.h

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+/*
+ * Copyright (c) 2023 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.
+ */
+
+#ifndef __MIO_TFLITE2121_HELPER_H__
+#define __MIO_TFLITE2121_HELPER_H__
+
+#include <mio/tflite/schema_generated.h>
+
+namespace mio
+{
+namespace tflite
+{
+
+::tflite::BuiltinOperator builtin_code_neutral(const ::tflite::OperatorCode *opcode);
+bool is_valid(const ::tflite::OperatorCode *opcode);
+bool is_custom(const ::tflite::OperatorCode *opcode);
+std::string opcode_name(const ::tflite::OperatorCode *opcode);
+const char *tensor_type(const ::tflite::Tensor *tensor);
+const char *tensor_name(const ::tflite::Tensor *tensor);
+
+} // namespace tflite
+} // namespace mio
+
+#endif // __MIO_TFLITE2121_HELPER_H__

compiler/mio-tflite2121/src/Helper.cpp

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+/*
+ * Copyright (c) 2023 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_tflite2121/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