Compute Library
 21.02
gc_absdiff.cpp
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1 /*
2  * Copyright (c) 2017-2019 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 
25 #ifndef ARM_COMPUTE_GC /* Needed by Utils.cpp to handle OpenGL ES exceptions properly */
26 #error "This example needs to be built with -DARM_COMPUTE_GC"
27 #endif /* ARM_COMPUTE_GC */
28 
29 #include "arm_compute/core/Types.h"
32 #include "utils/ImageLoader.h"
33 #include "utils/Utils.h"
34 
35 using namespace arm_compute;
36 using namespace utils;
37 
38 class GCAbsDiffExample : public Example
39 {
40 public:
41  bool do_setup(int argc, char **argv) override
42  {
43  PPMLoader ppm1{};
44  PPMLoader ppm2{};
45 
47  if(argc < 2)
48  {
49  // Print help
50  std::cout << "Usage: " << argv[0] << " [input0_image.ppm] [input1_image.ppm] \n\n";
51  std::cout << "No input_image provided, creating two dummy 640x480 images\n";
52  // Create two empty grayscale 640x480 images
53  src1.allocator()->init(TensorInfo(640, 480, Format::U8));
54  src2.allocator()->init(TensorInfo(640, 480, Format::U8));
55  }
56  else if(argc < 3)
57  {
58  // Print help
59  std::cout << "Usage: " << argv[0] << " [input0_image.ppm] [input1_image.ppm] \n\n";
60  std::cout << "Only one input_image provided, creating a dummy 640x480 image\n";
61  ppm1.open(argv[1]);
62  ppm1.init_image(src1, Format::U8);
63  // Create an empty grayscale 640x480 image
64  src2.allocator()->init(TensorInfo(640, 480, Format::U8));
65  }
66  else
67  {
68  ppm1.open(argv[1]);
69  ppm1.init_image(src1, Format::U8);
70  ppm2.open(argv[2]);
71  ppm2.init_image(src2, Format::U8);
72  }
73 
74  // Configure the temporary and destination images
75  dst.allocator()->init(*src1.info());
76 
77  absdiff.configure(&src1, &src2, &dst);
78 
79  // Allocate all the images
80  src1.allocator()->allocate();
81  src2.allocator()->allocate();
82  dst.allocator()->allocate();
83 
84  // Fill the input image with the content of the PPM image if a filename was provided:
85  if(ppm1.is_open())
86  {
87  ppm1.fill_image(src1);
88  output_filename = std::string(argv[1]) + "_out.ppm";
89  }
90  if(ppm2.is_open())
91  {
92  ppm2.fill_image(src2);
93  }
94 
95  return true;
96  }
97  void do_run() override
98  {
99  // Execute the functions:
100  absdiff.run();
101  }
102  void do_teardown() override
103  {
104  // Save the result to file:
105  if(!output_filename.empty())
106  {
107  // save_to_ppm maps and unmaps the image to store as PPM
108  // The GCTensor::map call inside the save_to_ppm will block until all pending operations on that image have completed
109  save_to_ppm(dst, output_filename);
110  }
111  }
112 
113 private:
114  GCImage src1{}, src2{}, dst{};
116  std::string output_filename{};
117 };
118 
119 /** Main program for absdiff test
120  *
121  * @param[in] argc Number of arguments
122  * @param[in] argv Arguments ( [optional] Path to the first PPM image to process, [optional] Path the the second PPM image to process )
123  */
124 int main(int argc, char **argv)
125 {
126  return utils::run_example<GCAbsDiffExample>(argc, argv);
127 }
void save_to_ppm(T &tensor, const std::string &ppm_filename)
Template helper function to save a tensor image to a PPM file.
Definition: Utils.h:547
1 channel, 1 U8 per channel
__kernel void absdiff(__global uchar *in1_ptr, uint in1_stride_x, uint in1_step_x, uint in1_stride_y, uint in1_step_y, uint in1_offset_first_element_in_bytes, __global uchar *in2_ptr, uint in2_stride_x, uint in2_step_x, uint in2_stride_y, uint in2_step_y, uint in2_offset_first_element_in_bytes, __global uchar *out_ptr, uint out_stride_x, uint out_step_x, uint out_stride_y, uint out_step_y, uint out_offset_first_element_in_bytes)
Calculate the absolute difference of two input images.
Definition: absdiff.cl:50
Interface for OpenGL ES tensor.
Definition: GCTensor.h:38
Copyright (c) 2017-2021 Arm Limited.
static GCScheduler & get()
Access the scheduler singleton.
Definition: GCScheduler.cpp:70
Abstract Example class.
Definition: Utils.h:78
Includes all the OpenGLES functions at once.
int main(int argc, char **argv)
Main program for absdiff test.
Definition: gc_absdiff.cpp:124
Interface to enqueue GLES kernels and get/set the GLES CommandQueue.
Store the tensor&#39;s metadata.
Definition: TensorInfo.h:45
Basic function to run GCAbsoluteDifferenceKernel.
void default_init()
Initialises the context and command queue used by the scheduler to default values and sets a default ...
Definition: GCScheduler.cpp:48
PPM Image loader concrete implementation.
Definition: ImageLoader.h:367