Compute Library
 21.02
CLMedian3x3Kernel.cpp
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25 
31 #include "support/StringSupport.h"
32 
33 using namespace arm_compute;
34 
36 {
37  return BorderSize(1);
38 }
39 
40 void CLMedian3x3Kernel::configure(const ICLTensor *input, ICLTensor *output, bool border_undefined)
41 {
42  configure(CLKernelLibrary::get().get_compile_context(), input, output, border_undefined);
43 }
44 
45 void CLMedian3x3Kernel::configure(const CLCompileContext &compile_context, const ICLTensor *input, ICLTensor *output, bool border_undefined)
46 {
49 
50  _input = input;
51  _output = output;
52 
53  // Create kernel
54  const std::string kernel_name = std::string("non_linear_filter_box3x3");
55  _kernel = create_kernel(compile_context, kernel_name, { "-DMEDIAN" });
56 
57  // Configure kernel window
58  constexpr unsigned int num_elems_processed_per_iteration = 8;
59  constexpr unsigned int num_elems_read_per_iteration = 16;
60  constexpr unsigned int num_elems_written_per_iteration = 8;
61  constexpr unsigned int num_rows_read_per_iteration = 3;
62 
63  Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size());
64 
65  AccessWindowRectangle input_access(input->info(), -border_size().left, -border_size().top, num_elems_read_per_iteration, num_rows_read_per_iteration);
66  AccessWindowHorizontal output_access(output->info(), 0, num_elems_written_per_iteration);
67 
68  update_window_and_padding(win, input_access, output_access);
69 
70  output_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
71 
72  ICLKernel::configure_internal(win);
73 
74  // Set config_id for enabling LWS tuning
75  _config_id = kernel_name;
76  _config_id += "_";
77  _config_id += lower_string(string_from_data_type(input->info()->data_type()));
78  _config_id += "_";
79  _config_id += support::cpp11::to_string(input->info()->dimension(0));
80  _config_id += "_";
81  _config_id += support::cpp11::to_string(input->info()->dimension(1));
82  _config_id += "_";
83  _config_id += support::cpp11::to_string(output->info()->dimension(0));
84  _config_id += "_";
85  _config_id += support::cpp11::to_string(output->info()->dimension(1));
86  _config_id += "_";
87  _config_id += support::cpp11::to_string(border_undefined);
88 }
unsigned int top
top of the border
Definition: Types.h:375
Window calculate_max_window(const ValidRegion &valid_region, const Steps &steps, bool skip_border, BorderSize border_size)
virtual size_t dimension(size_t index) const =0
Return the size of the requested dimension.
Container for 2D border size.
Definition: Types.h:273
1 channel, 1 U8 per channel
std::string to_string(T &&value)
Convert integer and float values to string.
virtual DataType data_type() const =0
Data type used for each element of the tensor.
static CLKernelLibrary & get()
Access the KernelLibrary singleton.
std::string lower_string(const std::string &val)
Lower a given string.
Definition: Utils.cpp:350
Copyright (c) 2017-2021 Arm Limited.
virtual ValidRegion valid_region() const =0
Valid region of the tensor.
Implementation of a rectangular access pattern.
void configure(const ICLTensor *input, ICLTensor *output, bool border_undefined)
Initialise the kernel's input and output.
cl::Kernel create_kernel(const CLCompileContext &ctx, const std::string &kernel_name, const std::set< std::string > &build_opts=std::set< std::string >())
Creates an opencl kernel using a compile context.
Definition: CLHelpers.cpp:403
const std::string & string_from_data_type(DataType dt)
Convert a data type identity into a string.
Definition: Utils.cpp:135
bool update_window_and_padding(Window &win, Ts &&... patterns)
Update window and padding size for each of the access patterns.
Definition: WindowHelpers.h:46
Class to describe a number of elements in each dimension.
Definition: Steps.h:40
Implementation of a row access pattern.
std::string kernel_name
virtual ITensorInfo * info() const =0
Interface to be implemented by the child class to return the tensor&#39;s metadata.
unsigned int left
left of the border
Definition: Types.h:378
#define ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(t, c,...)
Definition: Validate.h:790
CLCompileContext class.
Interface for OpenCL tensor.
Definition: ICLTensor.h:42
Manages all the OpenCL kernels compilation and caching, provides accessors for the OpenCL Context...
Wrapper to configure the Khronos OpenCL C++ header.
unsigned int num_elems_processed_per_iteration
Describe a multidimensional execution window.
Definition: Window.h:39
BorderSize border_size() const override
The size of the border for that kernel.