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24 #ifndef ARM_COMPUTE_CL /* Needed by Utils.cpp to handle OpenCL exceptions properly */
25 #error "This example needs to be built with -DARM_COMPUTE_CL"
26 #endif /* ARM_COMPUTE_CL */
28 #include "arm_compute/core/Types.h"
29 #include "arm_compute/runtime/CL/CLFunctions.h"
30 #include "arm_compute/runtime/CL/CLScheduler.h"
31 #include "utils/Utils.h"
33 using namespace arm_compute;
34 using namespace utils;
36 /** Gaussian 3x3 matrix
38 const int16_t gaussian3x3[] =
45 /** Gaussian 5x5 matrix
47 const int16_t gaussian5x5[] =
56 void main_cl_convolution(int argc, const char **argv)
59 CLImage src, tmp, dst;
61 CLScheduler::get().default_init();
66 std::cout << "Usage: ./build/cl_convolution [input_image.ppm]\n\n";
67 std::cout << "No input_image provided, creating a dummy 640x480 image\n";
68 // Create an empty grayscale 640x480 image
69 src.allocator()->init(TensorInfo(640, 480, Format::U8));
74 ppm.init_image(src, Format::U8);
77 // Configure the temporary and destination images
78 tmp.allocator()->init(*src.info());
79 dst.allocator()->init(*src.info());
81 CLConvolution3x3 conv3x3;
82 CLConvolution5x5 conv5x5;
84 // Apply a Gaussian 3x3 filter to the source image followed by a Gaussian 5x5:
85 conv3x3.configure(&src, &tmp, gaussian3x3, 0 /* Let arm_compute calculate the scale */, BorderMode::UNDEFINED);
86 conv5x5.configure(&tmp, &dst, gaussian5x5, 0 /* Let arm_compute calculate the scale */, BorderMode::UNDEFINED);
88 // Allocate all the images
89 src.allocator()->allocate();
90 tmp.allocator()->allocate();
91 dst.allocator()->allocate();
92 // Fill the input image with the content of the PPM image if a filename was provided:
98 // Execute the functions:
102 // Make sure all the OpenCL jobs are done executing:
103 CLScheduler::get().sync();
105 // Save the result to file:
108 const std::string output_filename = std::string(argv[1]) + "_out.ppm";
109 save_to_ppm(dst, output_filename); // save_to_ppm maps and unmaps the image to store as PPM
113 /** Main program for convolution test
115 * @param[in] argc Number of arguments
116 * @param[in] argv Arguments ( [optional] Path to PPM image to process )
118 int main(int argc, const char **argv)
120 return utils::run_example(argc, argv, main_cl_convolution);