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
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+//
+//  ShapeDepthToSpace.cpp
+//  MNN
+//
+//  Created by MNN on 2019/07/16.
+//  Copyright © 2018, Alibaba Group Holding Limited
+//
+
+#include "shape/SizeComputer.hpp"
+#include "core/Macro.h"
+#include "core/TensorUtils.hpp"
+
+namespace MNN {
+
+class DepthToSpaceSizeComputer : public SizeComputer {
+    virtual bool onComputeSize(const MNN::Op* op, const std::vector<Tensor*>& inputs, 
+                                const std::vector<Tensor*>& outputs) const override {
+        MNN_ASSERT(inputs.size() == 1);
+        MNN_ASSERT(outputs.size() == 1);
+        MNN_ASSERT(inputs[0]->buffer().dimensions == 4);
+        
+        const int blockSize = op->main_as_DepthSpaceParam()->blockSize();
+        MNN_ASSERT(blockSize >= 1);
+        auto format = TensorUtils::getDescribe(inputs[0])->dimensionFormat;
+        MNN_ASSERT(inputs[0]->channel() % (blockSize * blockSize) == 0);
+
+        auto& ib = inputs[0]->buffer();
+        auto& ob = outputs[0]->buffer();
+        ob.dimensions = ib.dimensions;
+        ob.type = ib.type;
+        if (format == MNN_DATA_FORMAT_NHWC) {
+            ob.dim[0].extent = ib.dim[0].extent;
+            ob.dim[1].extent = ib.dim[1].extent * blockSize;
+            ob.dim[2].extent = ib.dim[2].extent * blockSize;
+            ob.dim[3].extent = ib.dim[3].extent / (blockSize * blockSize);
+        } else {
+            // NCHW / NC4HW4
+            ob.dim[0].extent = ib.dim[0].extent;
+            ob.dim[3].extent = ib.dim[3].extent * blockSize;
+            ob.dim[2].extent = ib.dim[2].extent * blockSize;
+            ob.dim[1].extent = ib.dim[1].extent / (blockSize * blockSize);
+        }
+
+        TensorUtils::getDescribe(outputs[0])->dimensionFormat = TensorUtils::getDescribe(inputs[0])->dimensionFormat;
+
+        return true;
+    }
+};
+
+REGISTER_SHAPE(DepthToSpaceSizeComputer, OpType_DepthToSpace);
+
+} // namespace MNN