chore: import upstream snapshot with attribution

2026-07-13 13:33:03 +08:00
commit 5b57521aa1
8226 changed files with 3425766 additions and 0 deletions
@@ -0,0 +1,42 @@
+//
+//  ShapeDet.cpp
+//  MNN
+//
+//  Created by MNN on 2019/01/10.
+//  Copyright © 2018, Alibaba Group Holding Limited
+//
+
+#include "shape/SizeComputer.hpp"
+#include "core/Macro.h"
+
+namespace MNN {
+class DetComputer : public SizeComputer {
+    virtual bool onComputeSize(const MNN::Op* op, const std::vector<Tensor*>& inputs,
+                               const std::vector<Tensor*>& outputs) const override {
+        if (inputs.size() != 1) {
+            MNN_ERROR("Det only accept 1 input\n");
+            return false;
+        }
+        auto shape = inputs[0]->shape();
+        int dim = shape.size();
+        if (dim < 2 || shape[dim - 1] != shape[dim - 2]) {
+            MNN_ERROR("input must be [*, M, M]\n");
+            return false;
+        }
+        auto& ib = inputs[0]->buffer();
+        auto& ob = outputs[0]->buffer();
+
+        ob.dimensions = dim - 2;
+        if (dim > 2) {
+            ::memcpy(ob.dim, ib.dim, ob.dimensions * sizeof(halide_dimension_t));
+        }
+        ob.type = ib.type;
+        TensorUtils::getDescribe(outputs[0])->dimensionFormat = TensorUtils::getDescribe(inputs[0])->dimensionFormat;
+
+        return true;
+    }
+};
+
+REGISTER_SHAPE(DetComputer, OpType_Det);
+
+} // namespace MNN