Compute Library
 21.02
CLNonMaximaSuppression3x3Kernel.cpp
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25 
31 #include "arm_compute/core/Types.h"
34 
35 #include <set>
36 #include <string>
37 
38 using namespace arm_compute;
39 
41 {
42  return BorderSize(1);
43 }
44 
45 void CLNonMaximaSuppression3x3Kernel::configure(const ICLTensor *input, ICLTensor *output, bool border_undefined)
46 {
47  configure(CLKernelLibrary::get().get_compile_context(), input, output, border_undefined);
48 }
49 
50 void CLNonMaximaSuppression3x3Kernel::configure(const CLCompileContext &compile_context, const ICLTensor *input, ICLTensor *output, bool border_undefined)
51 {
54 
55  _input = input;
56  _output = output;
57 
58  // Create kernel
59  std::set<std::string> build_opts = { ("-DDATA_TYPE=" + get_cl_type_from_data_type(input->info()->data_type())) };
60  _kernel = create_kernel(compile_context, "non_max_suppression", build_opts);
61 
62  // Configure kernel window
63  constexpr unsigned int num_elems_processed_per_iteration = 8;
64  constexpr unsigned int num_elems_written_per_iteration = 8;
65  constexpr unsigned int num_elems_read_per_iteration = 16;
66  constexpr unsigned int num_rows_read_per_iteration = 3;
67 
68  Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size());
69 
70  AccessWindowRectangle input_access(input->info(), -border_size().left, -border_size().top, num_elems_read_per_iteration, num_rows_read_per_iteration);
71  AccessWindowHorizontal output_access(output->info(), 0, num_elems_written_per_iteration);
72 
73  update_window_and_padding(win, input_access, output_access);
74 
75  output_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
76 
77  ICLKernel::configure_internal(win);
78 }
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)
void configure(const ICLTensor *input, ICLTensor *output, bool border_undefined)
Initialise the kernel&#39;s sources, destinations and border mode.
Container for 2D border size.
Definition: Types.h:273
1 channel, 1 U8 per channel
virtual DataType data_type() const =0
Data type used for each element of the tensor.
1 channel, 1 F32 per channel
static CLKernelLibrary & get()
Access the KernelLibrary singleton.
Copyright (c) 2017-2021 Arm Limited.
virtual ValidRegion valid_region() const =0
Valid region of the tensor.
Implementation of a rectangular access pattern.
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
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 get_cl_type_from_data_type(const DataType &dt)
Translates a tensor data type to the appropriate OpenCL type.
Definition: CLHelpers.cpp:37
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
BorderSize border_size() const override
The size of the border for that kernel.
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