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 +1,41 @@
+//
+//  ShapeStft.cpp
+//  MNN
+//
+//  Created by MNN on 2024/11/26.
+//  Copyright © 2018, Alibaba Group Holding Limited
+//
+
+#include "shape/SizeComputer.hpp"
+#include "core/Macro.h"
+#include "core/TensorUtils.hpp"
+
+namespace MNN {
+
+class StftOpComputer : public SizeComputer {
+    virtual bool onComputeSize(const MNN::Op* op, const std::vector<Tensor*>& inputs,
+                               const std::vector<Tensor*>& outputs) const override {
+        int batch_size = inputs[0]->length(0);
+        int signal_length = inputs[0]->length(1);
+        outputs[0]->buffer().dimensions = 4;
+        outputs[0]->setLength(3, 2);
+        outputs[0]->setLength(0, batch_size);
+        int frame_length = inputs[2]->length(0);
+        int nstfts = ((signal_length - frame_length) / inputs[1]->host<int>()[0]) + 1;
+        outputs[0]->setLength(1, nstfts);
+
+        int dft_unique_bins;
+        if (op->main_as_StftParam()->abs()) {
+            dft_unique_bins = frame_length / 2 + 1;
+        } else {
+            dft_unique_bins = frame_length;
+        }
+        outputs[0]->setLength(2, dft_unique_bins);
+
+        TensorUtils::getDescribe(outputs[0])->dimensionFormat = TensorUtils::getDescribe(inputs[0])->dimensionFormat;
+        return true;
+    }
+};
+REGISTER_SHAPE_INPUTS(StftOpComputer, OpType_Stft, std::vector<int>{1});
+
+} // namespace MNN