dpp anchor process uint8 data in order to support old model

mindspore/lite/src/runtime/kernel/arm/base/detection_post_process_base.cc

@@ -49,7 +49,8 @@ int DetectionPostProcessBaseCPUKernel::Init() {
   auto anchor_tensor = in_tensors_.at(2);
   if (anchor_tensor->data_type() == kNumberTypeInt8) {
     auto quant_param = anchor_tensor->GetQuantParams().front();
-    auto anchor_int8 = reinterpret_cast<int8_t *>(anchor_tensor->MutableData());
+    auto anchor_int8 = reinterpret_cast<int8_t *>(anchor_tensor->data_c());
+    MS_ASSERT(anchor_int8 != nullptr);
     auto anchor_fp32 = new (std::nothrow) float[anchor_tensor->ElementsNum()];
     if (anchor_fp32 == nullptr) {
       MS_LOG(ERROR) << "Malloc anchor failed";
@@ -58,13 +59,25 @@ int DetectionPostProcessBaseCPUKernel::Init() {
     DoDequantizeInt8ToFp32(anchor_int8, anchor_fp32, quant_param.scale, quant_param.zeroPoint,
                            anchor_tensor->ElementsNum());
     params_->anchors_ = anchor_fp32;
+  } else if (anchor_tensor->data_type() == kNumberTypeUInt8) {
+    auto quant_param = anchor_tensor->GetQuantParams().front();
+    auto anchor_uint8 = reinterpret_cast<uint8_t *>(anchor_tensor->data_c());
+    MS_ASSERT(anchor_uint8 != nullptr);
+    auto anchor_fp32 = new (std::nothrow) float[anchor_tensor->ElementsNum()];
+    if (anchor_fp32 == nullptr) {
+      MS_LOG(ERROR) << "Malloc anchor failed";
+      return RET_ERROR;
+    }
+    DoDequantizeUInt8ToFp32(anchor_uint8, anchor_fp32, quant_param.scale, quant_param.zeroPoint,
+                            anchor_tensor->ElementsNum());
+    params_->anchors_ = anchor_fp32;
   } else if (anchor_tensor->data_type() == kNumberTypeFloat32 || anchor_tensor->data_type() == kNumberTypeFloat) {
     params_->anchors_ = new (std::nothrow) float[anchor_tensor->ElementsNum()];
     if (params_->anchors_ == nullptr) {
       MS_LOG(ERROR) << "Malloc anchor failed";
       return RET_ERROR;
     }
-    memcpy(params_->anchors_, anchor_tensor->MutableData(), anchor_tensor->Size());
+    memcpy(params_->anchors_, anchor_tensor->data_c(), anchor_tensor->Size());
   } else {
     MS_LOG(ERROR) << "unsupported anchor data type " << anchor_tensor->data_type();
     return RET_ERROR;