1 /*
2 * Copyright (c) 2016-2020 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/NEON/NEFunctions.h"
25
26 #include "arm_compute/core/Types.h"
27 #include "utils/ImageLoader.h"
28 #include "utils/Utils.h"
29
30 using namespace arm_compute;
31 using namespace utils;
32
33 class NEONScaleExample : public Example
34 {
35 public:
do_setup(int argc,char ** argv)36 bool do_setup(int argc, char **argv) override
37 {
38 PPMLoader ppm;
39
40 if(argc < 2)
41 {
42 // Print help
43 std::cout << "Usage: ./build/neon_scale[input_image.ppm]\n\n";
44 std::cout << "No input_image provided, creating a dummy 640x480 image\n";
45 // Create an empty grayscale 640x480 image
46 src.allocator()->init(TensorInfo(640, 480, Format::U8));
47 }
48 else
49 {
50 ppm.open(argv[1]);
51 ppm.init_image(src, Format::U8);
52 }
53
54 constexpr int scale_factor = 2;
55
56 TensorInfo dst_tensor_info(src.info()->dimension(0) / scale_factor, src.info()->dimension(1) / scale_factor,
57 Format::U8);
58
59 // Configure the destination image
60 dst.allocator()->init(dst_tensor_info);
61
62 // Configure Scale function object:
63 scale.configure(&src, &dst, ScaleKernelInfo{
64 InterpolationPolicy::NEAREST_NEIGHBOR,
65 BorderMode::UNDEFINED,
66 PixelValue(),
67 SamplingPolicy::CENTER,
68 false
69 });
70
71 // Allocate all the images
72 src.allocator()->allocate();
73 dst.allocator()->allocate();
74
75 // Fill the input image with the content of the PPM image if a filename was provided:
76 if(ppm.is_open())
77 {
78 ppm.fill_image(src);
79 output_filename = std::string(argv[1]) + "_out.ppm";
80 }
81
82 return true;
83 }
do_run()84 void do_run() override
85 {
86 // Run the scale operation:
87 scale.run();
88 }
do_teardown()89 void do_teardown() override
90 {
91 // Save the result to file:
92 if(!output_filename.empty())
93 {
94 save_to_ppm(dst, output_filename); // save_to_ppm maps and unmaps the image to store as PPM
95 }
96 }
97
98 private:
99 Image src{}, dst{};
100 NEScale scale{};
101 std::string output_filename{};
102 };
103
104 /** Main program for convolution test
105 *
106 * @param[in] argc Number of arguments
107 * @param[in] argv Arguments ( [optional] Path to PPM image to process )
108 */
main(int argc,char ** argv)109 int main(int argc, char **argv)
110 {
111 return utils::run_example<NEONScaleExample>(argc, argv);
112 }
113