77 lines
3.3 KiB
C++
77 lines
3.3 KiB
C++
/****************************************************************************
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*
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* Copyright (c) 2020 Vivante Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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*****************************************************************************/
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#ifndef TIM_VX_OPS_STRIDEDSLICE_H_
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#define TIM_VX_OPS_STRIDEDSLICE_H_
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#include "tim/vx/builtin_op.h"
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namespace tim {
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namespace vx {
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namespace ops {
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/**
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* ## StridedSlice
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*
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* Extracts a strided slice of a tensor.Same as tensorflow.
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*
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* Roughly speaking, this op extracts a slice of size (end - begin) / stride from
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* the given input tensor. Starting at the location specified by begin the slice
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* continues by adding stride to the index until all dimensions are not less than end.
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* Note that a stride can be negative, which causes a reverse slice.
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*
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* - begin_dims : the starts of the dimensions of the input tensor to be sliced.
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* - end_dims : the ends of the dimensions of the input tensor to be sliced.
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* - stride_dims : the strides of the dimensions of the input tensor to be sliced.
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* - begin_mask : if the ith bit of begin_mask is set, begin[i] is ignored and
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* the fullest possible range in that dimension is used instead.
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* - end_mask : if the ith bit of end_mask is set, end[i] is ignored and the fullest
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* possible range in that dimension is used instead.
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* - shrink_axis_mask : if the ith bit of shrink_axis_mask is set, the ith dimension
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* specification shrinks the dimensionality by 1, taking on the value at index begin[i].
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* In this case, the ith specification must define a slice of size 1,
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* e.g. begin[i] = x, end[i] = x + 1.
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*/
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class StridedSlice : public BuiltinOp {
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public:
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StridedSlice(Graph* graph, const std::vector<int32_t> begin_dims,
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const std::vector<int32_t> end_dims,
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const std::vector<int32_t> stride_dims, int32_t begin_mask,
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int32_t end_mask, int32_t shrink_axis_mask);
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std::shared_ptr<Operation> Clone(std::shared_ptr<Graph>& graph) const override;
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protected:
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std::vector<int32_t> begin_dims_;
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std::vector<int32_t> end_dims_;
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std::vector<int32_t> stride_dims_;
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int32_t begin_mask_;
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int32_t end_mask_;
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int32_t shrink_axis_mask_;
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};
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} // namespace ops
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} // namespace vx
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} // namespace tim
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#endif /* TIM_VX_OPS_STRIDEDSLICE_H_ */ |