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      1 /* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
      2 
      3 Licensed under the Apache License, Version 2.0 (the "License");
      4 you may not use this file except in compliance with the License.
      5 You may obtain a copy of the License at
      6 
      7     http://www.apache.org/licenses/LICENSE-2.0
      8 
      9 Unless required by applicable law or agreed to in writing, software
     10 distributed under the License is distributed on an "AS IS" BASIS,
     11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 See the License for the specific language governing permissions and
     13 limitations under the License.
     14 ==============================================================================*/
     15 #ifndef TENSORFLOW_LITE_PYTHON_OPTIMIZE_CALIBRATION_WRAPPER_H_
     16 #define TENSORFLOW_LITE_PYTHON_OPTIMIZE_CALIBRATION_WRAPPER_H_
     17 
     18 #include <memory>
     19 #include <string>
     20 #include <vector>
     21 
     22 // Place `<locale>` before <Python.h> to avoid build failures in macOS.
     23 #include <locale>
     24 
     25 // The empty line above is on purpose as otherwise clang-format will
     26 // automatically move <Python.h> before <locale>.
     27 #include <Python.h>
     28 
     29 // We forward declare TFLite classes here to avoid exposing them to SWIG.
     30 namespace tflite {
     31 namespace ops {
     32 namespace builtin {
     33 class BuiltinOpResolver;
     34 }  // namespace builtin
     35 }  // namespace ops
     36 
     37 class FlatBufferModel;
     38 class Interpreter;
     39 
     40 namespace interpreter_wrapper {
     41 class PythonErrorReporter;
     42 }  // namespace interpreter_wrapper
     43 
     44 namespace optimize {
     45 namespace calibration {
     46 class CalibrationReader;
     47 }  // namespace calibration
     48 }  // namespace optimize
     49 
     50 namespace calibration_wrapper {
     51 
     52 class CalibrationWrapper {
     53  public:
     54   // SWIG caller takes ownership of pointer.
     55   static CalibrationWrapper* CreateWrapperCPPFromBuffer(PyObject* data);
     56   ~CalibrationWrapper();
     57 
     58   PyObject* Prepare();
     59 
     60   PyObject* FeedTensor(PyObject* input_value);
     61 
     62   PyObject* QuantizeModel();
     63 
     64  private:
     65   // CalibrationWrapper is not copyable or assignable. We avoid the use of
     66   // CalibrationWrapper() = delete here for SWIG compatibility.
     67   CalibrationWrapper(
     68       std::unique_ptr<tflite::Interpreter> interpreter,
     69       std::unique_ptr<tflite::ops::builtin::BuiltinOpResolver> resolver,
     70       std::unique_ptr<tflite::interpreter_wrapper::PythonErrorReporter>
     71           error_reporter,
     72       std::unique_ptr<tflite::FlatBufferModel> model,
     73       std::unique_ptr<tflite::optimize::calibration::CalibrationReader> reader);
     74 
     75   CalibrationWrapper(const CalibrationWrapper& rhs);
     76 
     77   PyObject* SetTensor(int index, PyObject* value);
     78 
     79   std::unique_ptr<tflite::Interpreter> interpreter_;
     80   std::unique_ptr<tflite::interpreter_wrapper::PythonErrorReporter>
     81       error_reporter_;
     82   std::unique_ptr<tflite::ops::builtin::BuiltinOpResolver> resolver_;
     83   std::unique_ptr<tflite::FlatBufferModel> model_;
     84   std::unique_ptr<tflite::optimize::calibration::CalibrationReader> reader_;
     85 };
     86 
     87 }  // namespace calibration_wrapper
     88 }  // namespace tflite
     89 
     90 #endif  // TENSORFLOW_LITE_PYTHON_OPTIMIZE_CALIBRATION_WRAPPER_H_
     91