78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
// sherpa-onnx/csrc/slice.cc
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//
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// Copyright (c) 2023 Xiaomi Corporation
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#include "sherpa-onnx/csrc/slice.h"
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#include <algorithm>
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#include <cassert>
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#include <vector>
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namespace sherpa_onnx {
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template <typename T /*=float*/>
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Ort::Value Slice(OrtAllocator *allocator, const Ort::Value *v,
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int32_t dim0_start, int32_t dim0_end, int32_t dim1_start,
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int32_t dim1_end) {
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std::vector<int64_t> shape = v->GetTensorTypeAndShapeInfo().GetShape();
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assert(shape.size() == 3);
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assert(0 <= dim0_start);
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assert(dim0_start < dim0_end);
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assert(dim0_end <= shape[0]);
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assert(0 <= dim1_start);
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assert(dim1_start < dim1_end);
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assert(dim1_end <= shape[1]);
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std::array<int64_t, 3> ans_shape{dim0_end - dim0_start, dim1_end - dim1_start,
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shape[2]};
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Ort::Value ans = Ort::Value::CreateTensor<T>(allocator, ans_shape.data(),
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ans_shape.size());
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T *dst = ans.GetTensorMutableData<T>();
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for (int32_t i = dim0_start; i != dim0_end; ++i) {
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const T *src = v->GetTensorData<T>() + i * shape[1] * shape[2];
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const T *start = src + dim1_start * shape[2];
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const T *end = src + dim1_end * shape[2];
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std::copy(start, end, dst);
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dst += ans_shape[1] * ans_shape[2];
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}
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return ans;
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}
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template <typename T /*= float*/>
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Ort::Value Slice(OrtAllocator *allocator, const Ort::Value *v,
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int32_t dim0_start, int32_t dim0_end) {
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std::vector<int64_t> shape = v->GetTensorTypeAndShapeInfo().GetShape();
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assert(shape.size() == 2);
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assert(0 <= dim0_start);
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assert(dim0_start < dim0_end);
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assert(dim0_end <= shape[0]);
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const T *src = v->GetTensorData<T>();
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std::array<int64_t, 2> ans_shape{dim0_end - dim0_start, shape[1]};
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Ort::Value ans = Ort::Value::CreateTensor<T>(allocator, ans_shape.data(),
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ans_shape.size());
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const T *start = v->GetTensorData<T>() + dim0_start * shape[1];
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const T *end = v->GetTensorData<T>() + dim0_end * shape[1];
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T *dst = ans.GetTensorMutableData<T>();
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std::copy(start, end, dst);
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return ans;
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}
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template Ort::Value Slice<float>(OrtAllocator *allocator, const Ort::Value *v,
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int32_t dim0_start, int32_t dim0_end,
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int32_t dim1_start, int32_t dim1_end);
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template Ort::Value Slice<float>(OrtAllocator *allocator, const Ort::Value *v,
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int32_t dim0_start, int32_t dim0_end);
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} // namespace sherpa_onnx
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