1 /*
2 * Copyright (c) 2018-2020 Arm Limited.
3 *
4 * SPDX-License-Identifier: MIT
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24 #include "arm_compute/graph/nodes/SliceLayerNode.h"
25
26 #include "arm_compute/core/Utils.h"
27 #include "arm_compute/core/utils/misc/ShapeCalculator.h"
28 #include "arm_compute/graph/Graph.h"
29 #include "arm_compute/graph/INodeVisitor.h"
30
31 namespace arm_compute
32 {
33 namespace graph
34 {
SliceLayerNode(const Coordinates & starts,const Coordinates & ends)35 SliceLayerNode::SliceLayerNode(const Coordinates &starts, const Coordinates &ends)
36 : _starts(starts), _ends(ends)
37 {
38 _input_edges.resize(1, EmptyEdgeID);
39 _outputs.resize(1, NullTensorID);
40 }
41
starts() const42 Coordinates SliceLayerNode::starts() const
43 {
44 return _starts;
45 }
46
ends() const47 Coordinates SliceLayerNode::ends() const
48 {
49 return _ends;
50 }
51
compute_output_descriptor(const TensorDescriptor & input_descriptor,const Coordinates & starts,const Coordinates & ends)52 TensorDescriptor SliceLayerNode::compute_output_descriptor(const TensorDescriptor &input_descriptor,
53 const Coordinates &starts, const Coordinates &ends)
54 {
55 using namespace arm_compute::helpers::tensor_transform;
56
57 TensorDescriptor output_desc = input_descriptor;
58 output_desc.shape = arm_compute::misc::shape_calculator::compute_slice_shape(input_descriptor.shape, starts, ends);
59
60 return output_desc;
61 }
62
forward_descriptors()63 bool SliceLayerNode::forward_descriptors()
64 {
65 if((input_id(0) != NullTensorID) && (output_id(0) != NullTensorID))
66 {
67 Tensor *dst = output(0);
68 ARM_COMPUTE_ERROR_ON(dst == nullptr);
69 dst->desc() = configure_output(0);
70 return true;
71 }
72 return false;
73 }
74
configure_output(size_t idx) const75 TensorDescriptor SliceLayerNode::configure_output(size_t idx) const
76 {
77 ARM_COMPUTE_UNUSED(idx);
78 ARM_COMPUTE_ERROR_ON(idx >= _outputs.size());
79
80 const Tensor *src = input(0);
81 ARM_COMPUTE_ERROR_ON(src == nullptr);
82
83 return compute_output_descriptor(src->desc(), _starts, _ends);
84 }
85
type() const86 NodeType SliceLayerNode::type() const
87 {
88 return NodeType::SliceLayer;
89 }
90
accept(INodeVisitor & v)91 void SliceLayerNode::accept(INodeVisitor &v)
92 {
93 v.visit(*this);
94 }
95 } // namespace graph
96 } // namespace arm_compute
97