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 +1,56 @@
+//
+//  GeometryThreshold.cpp
+//  MNN
+//
+//  Created by MNN on 2020/07/27.
+//  Copyright © 2018, Alibaba Group Holding Limited
+//
+
+#include "geometry/GeometryComputer.hpp"
+#include "core/OpCommonUtils.hpp"
+#include "geometry/GeometryComputerUtils.hpp"
+
+namespace MNN {
+class GeometryThreshold : public GeometryComputer {
+public:
+    virtual bool onCompute(const Op* op, const std::vector<Tensor*>& inputs, const std::vector<Tensor*>& outputs, Context& context, CommandBuffer& res) const override {
+        MNN_ASSERT(1 == inputs.size());
+        MNN_ASSERT(1 == outputs.size());
+        auto input = inputs[0];
+        auto output = outputs[0];
+        // compare with threshold
+        std::shared_ptr<Tensor> compValue(new Tensor);
+        {
+            auto thresholdConst = context.allocConst(op, {}, halide_type_of<float>());
+            thresholdConst->host<float>()[0] = op->main_as_ELU()->alpha();
+            compValue->buffer().type = halide_type_of<int>();
+            TensorUtils::copyShape(input, compValue.get(), true);
+            auto cmd = GeometryComputerUtils::makeBinary(BinaryOpOperation_GREATER, input, thresholdConst.get(), compValue.get());
+            res.extras.emplace_back(compValue);
+            res.command.emplace_back(std::move(cmd));
+        }
+        // select
+        {
+            auto zeroConst = context.allocConst(op, {}, halide_type_of<float>());
+            auto oneConst = context.allocConst(op, {}, halide_type_of<float>());
+            zeroConst->host<float>()[0] = 0.0;
+            oneConst->host<float>()[0] = 1.0;
+            flatbuffers::FlatBufferBuilder builder;
+            OpBuilder opB(builder);
+            opB.add_type(OpType_Select);
+            builder.Finish(opB.Finish());
+            auto cmd = GeometryComputerUtils::makeCommand(builder, {compValue.get(), oneConst.get(), zeroConst.get()}, {output});
+            res.command.emplace_back(std::move(cmd));
+        }
+        return true;
+    }
+};
+
+static void _create() {
+    std::shared_ptr<GeometryComputer> comp(new GeometryThreshold);
+    GeometryComputer::registerGeometryComputer(comp, {OpType_Threshold});
+}
+
+REGISTER_GEOMETRY(GeometryThreshold, _create);
+
+} // namespace MNN