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 +1,57 @@
+//
+//  ShapeUnpack.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 UnpackComputer : public SizeComputer {
+    virtual bool onComputeSize(const MNN::Op *op, const std::vector<Tensor *> &inputs,
+                               const std::vector<Tensor *> &outputs) const override {
+        if (nullptr == op || inputs.empty() || outputs.empty()) {
+            // Avoid crash for special model
+            return false;
+        }
+        auto unpack    = op->main_as_Axis();
+        int axis = unpack->axis();
+        if (axis < 0) {
+            axis += inputs[0]->dimensions();
+        }
+
+        auto &input = inputs[0]->buffer();
+
+        const int inputDimensions = input.dimensions;
+        MNN_ASSERT(1 <= inputDimensions);
+        int32_t outDims[MNN_MAX_TENSOR_DIM];
+        if (outputs.size() > input.dim[axis].extent) {
+            return false;
+        }
+
+        for (int i = 0; i < axis; i++) {
+            outDims[i] = input.dim[i].extent;
+        }
+        for (int i = axis + 1; i < inputDimensions; i++) {
+            outDims[i - 1] = input.dim[i].extent;
+        }
+        const int outputDimensions = inputDimensions - 1;
+        for (int i = 0; i < outputs.size(); i++) {
+            auto &output      = outputs[i]->buffer();
+            output.dimensions = outputDimensions;
+            output.type       = input.type;
+            for (int j = 0; j < outputDimensions; j++) {
+                output.dim[j].extent = outDims[j];
+            }
+            TensorUtils::getDescribe(outputs[i])->dimensionFormat = TensorUtils::getDescribe(inputs[0])->dimensionFormat;
+        }
+        return true;
+    }
+};
+
+REGISTER_SHAPE(UnpackComputer, OpType_Unpack);
+} // namespace MNN