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1 /*
2  * Copyright (c) 2017-2020 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/runtime/CL/functions/CLLaplacianReconstruct.h"
25 
26 #include "arm_compute/core/CL/CLKernelLibrary.h"
27 #include "arm_compute/core/Error.h"
28 #include "arm_compute/core/IPyramid.h"
29 #include "arm_compute/core/ITensor.h"
30 #include "arm_compute/core/TensorInfo.h"
31 #include "arm_compute/core/Validate.h"
32 #include "src/core/CL/kernels/CLFillBorderKernel.h"
33 
34 #include <cstddef>
35 
36 using namespace arm_compute;
37 
CLLaplacianReconstruct()38 CLLaplacianReconstruct::CLLaplacianReconstruct() // NOLINT
39     : _tmp_pyr(),
40       _addf(),
41       _scalef(),
42       _depthf()
43 {
44 }
45 
configure(const CLPyramid * pyramid,ICLTensor * input,ICLTensor * output,BorderMode border_mode,uint8_t constant_border_value)46 void CLLaplacianReconstruct::configure(const CLPyramid *pyramid, ICLTensor *input, ICLTensor *output, BorderMode border_mode, uint8_t constant_border_value)
47 {
48     configure(CLKernelLibrary::get().get_compile_context(), pyramid, input, output, border_mode, constant_border_value);
49 }
50 
configure(const CLCompileContext & compile_context,const CLPyramid * pyramid,ICLTensor * input,ICLTensor * output,BorderMode border_mode,uint8_t constant_border_value)51 void CLLaplacianReconstruct::configure(const CLCompileContext &compile_context, const CLPyramid *pyramid, ICLTensor *input, ICLTensor *output, BorderMode border_mode, uint8_t constant_border_value)
52 {
53     ARM_COMPUTE_ERROR_ON(nullptr == pyramid);
54     ARM_COMPUTE_ERROR_ON(input == output);
55     ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::S16);
56     ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8);
57     ARM_COMPUTE_ERROR_ON(input->info()->num_dimensions() != pyramid->get_pyramid_level(0)->info()->num_dimensions());
58     ARM_COMPUTE_ERROR_ON(output->info()->num_dimensions() != pyramid->get_pyramid_level(0)->info()->num_dimensions());
59     ARM_COMPUTE_ERROR_ON(output->info()->dimension(0) != pyramid->get_pyramid_level(0)->info()->dimension(0));
60     ARM_COMPUTE_ERROR_ON(output->info()->dimension(1) != pyramid->get_pyramid_level(0)->info()->dimension(1));
61     ARM_COMPUTE_ERROR_ON(input->info()->dimension(0) != pyramid->get_pyramid_level(pyramid->info()->num_levels() - 1)->info()->dimension(0));
62     ARM_COMPUTE_ERROR_ON(input->info()->dimension(1) != pyramid->get_pyramid_level(pyramid->info()->num_levels() - 1)->info()->dimension(1));
63 
64     const size_t num_levels = pyramid->info()->num_levels();
65 
66     // Create and initialize the tmp pyramid: I(n-2) = upsample( input + Laplace(n-1) )
67     PyramidInfo pyramid_info;
68     pyramid_info.init(num_levels, 0.5f, output->info()->tensor_shape(), arm_compute::Format::S16);
69     _tmp_pyr.init(pyramid_info);
70 
71     // Allocate add and scale functions. Level 0 does not need to be scaled.
72     _addf.resize(num_levels);
73     _scalef.resize(num_levels - 1);
74 
75     const size_t last_level = num_levels - 1;
76 
77     _addf[last_level].configure(compile_context, input, pyramid->get_pyramid_level(last_level), _tmp_pyr.get_pyramid_level(last_level), ConvertPolicy::SATURATE);
78 
79     // Scale levels n-1 to 1, and add levels n-2 to 0
80     for(size_t l = 0; l < last_level; ++l)
81     {
82         _scalef[l].configure(compile_context, _tmp_pyr.get_pyramid_level(l + 1), _tmp_pyr.get_pyramid_level(l), ScaleKernelInfo{ arm_compute::InterpolationPolicy::NEAREST_NEIGHBOR, border_mode, constant_border_value });
83         _addf[l].configure(compile_context, _tmp_pyr.get_pyramid_level(l), pyramid->get_pyramid_level(l), _tmp_pyr.get_pyramid_level(l), ConvertPolicy::SATURATE);
84     }
85 
86     // Convert level 0 from S16 to U8
87     _depthf.configure(compile_context, _tmp_pyr.get_pyramid_level(0), output, ConvertPolicy::SATURATE, 0);
88 
89     _tmp_pyr.allocate();
90 }
91 
run()92 void CLLaplacianReconstruct::run()
93 {
94     ARM_COMPUTE_ERROR_ON_MSG(_addf.empty(), "Unconfigured function");
95 
96     const size_t last_level = _tmp_pyr.info()->num_levels() - 1;
97 
98     _addf[last_level].run();
99 
100     // Run l = [last_level - 1, 0]
101     for(size_t l = last_level; l-- > 0;)
102     {
103         _scalef[l].run();
104         _addf[l].run();
105     }
106 
107     _depthf.run();
108 }
109