add fp16 testcase

mindspore/lite/test/models_tflite.cfg

@@ -56,3 +56,4 @@ ml_ocr_latin.tflite
 hiai_ssd_mobilenetv2_object.tflite
 inception_v4.tflite
 ml_object_detect.tflite
+mtk_model_normalize_object_scene_ps_20200519_f16.tflite

mindspore/lite/tools/converter/parser/tflite/tflite_model_parser.cc

@@ -43,8 +43,7 @@ std::unique_ptr<tflite::ModelT> TfliteModelParser::ReadTfliteModel(const char *m
 }
 
 STATUS TfliteModelParser::CopyConstTensorData(const std::vector<std::unique_ptr<tflite::BufferT>> &tflite_model_buffer,
-                                              const tflite::TensorT *tflite_tensor,
-                                              schema::TensorT *tensor) {
+                                              const tflite::TensorT *tflite_tensor, schema::TensorT *tensor) {
   auto count = 1;
   std::for_each(tflite_tensor->shape.begin(), tflite_tensor->shape.end(), [&](int32_t sha) { count *= sha; });
   auto data_size = count * GetDataTypeSize(TypeId(tensor->dataType));
@@ -92,8 +91,7 @@ void TfliteModelParser::SetTensorQuantParam(const std::unique_ptr<tflite::Tensor
 
 STATUS TfliteModelParser::ConvertOp(const std::unique_ptr<tflite::ModelT> &tflite_model,
                                     const std::unique_ptr<tflite::SubGraphT> &tflite_subgraph,
-                                    const QuantType &quant_type,
-                                    schema::MetaGraphT* sub_graph) {
+                                    const QuantType &quant_type, schema::MetaGraphT *sub_graph) {
   int idx = 0;
   for (const auto &tflite_op : tflite_subgraph->operators) {
     auto tflite_op_type = (tflite_model->operator_codes[tflite_op->opcode_index])->builtin_code;
@@ -126,7 +124,7 @@ STATUS TfliteModelParser::ConvertOp(const std::unique_ptr<tflite::ModelT> &tflit
 
 STATUS TfliteModelParser::ConvertTensor(const std::unique_ptr<tflite::SubGraphT> &tflite_subgraph,
                                         const std::vector<std::unique_ptr<tflite::BufferT>> &tflite_model_buffer,
-                                        schema::MetaGraphT* sub_graph) {
+                                        schema::MetaGraphT *sub_graph) {
   for (int i = 0; i < tensorsId.size(); i++) {
     auto idx = tensorsId[i];
     if (idx < 0) {
@@ -164,8 +162,9 @@ STATUS TfliteModelParser::ConvertTensor(const std::unique_ptr<tflite::SubGraphT>
     }
 
     // quant param
-    if (!(tflite_tensor->quantization->scale.empty() && tflite_tensor->quantization->zero_point.empty() &&
-        tflite_tensor->quantization->min.empty() && tflite_tensor->quantization->max.empty())) {
+    if (tflite_tensor->quantization != nullptr &&
+        !(tflite_tensor->quantization->scale.empty() && tflite_tensor->quantization->zero_point.empty() &&
+          tflite_tensor->quantization->min.empty() && tflite_tensor->quantization->max.empty())) {
       SetTensorQuantParam(tflite_tensor, tensor.get());
     }
 
@@ -180,7 +179,7 @@ STATUS TfliteModelParser::ConvertTensor(const std::unique_ptr<tflite::SubGraphT>
 }
 
 STATUS TfliteModelParser::GetGraphInfo(const std::unique_ptr<tflite::SubGraphT> &tflite_subgraph,
-                                       schema::MetaGraphT* sub_graph) {
+                                       schema::MetaGraphT *sub_graph) {
   int id;
 
   // graph input
@@ -217,7 +216,7 @@ STATUS TfliteModelParser::GetGraphInfo(const std::unique_ptr<tflite::SubGraphT>
   return RET_OK;
 }
 
-STATUS TfliteModelParser::UpdateOp(schema::MetaGraphT* sub_graph) {
+STATUS TfliteModelParser::UpdateOp(schema::MetaGraphT *sub_graph) {
   for (auto &op : sub_graph->nodes) {
     if (op->primitive->value.type == schema::PrimitiveType_DepthwiseConv2D) {
       auto attr = op->primitive->value.AsDepthwiseConv2D();
@@ -270,9 +269,7 @@ STATUS TfliteModelParser::UpdateOp(schema::MetaGraphT* sub_graph) {
   return RET_OK;
 }
 
-
-MetaGraphT *TfliteModelParser::Parse(const std::string &model_file,
-                                     const std::string &weight_file,
+MetaGraphT *TfliteModelParser::Parse(const std::string &model_file, const std::string &weight_file,
                                      const QuantType &quant_type) {
   std::unique_ptr<schema::MetaGraphT> sub_graph(new schema::MetaGraphT);
   sub_graph->name = "MS_model converted by TF-Lite";