Compute Library
 21.02
CLWarpAffineKernel.cpp
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25 
30 #include "arm_compute/core/Error.h"
36 #include "support/StringSupport.h"
37 
38 #include <cstddef>
39 #include <set>
40 #include <sstream>
41 #include <string>
42 
43 namespace arm_compute
44 {
45 namespace
46 {
47 void options_add_matrix(std::set<std::string> &options, const std::array<float, 9> &matrix)
48 {
49  for(size_t i = 0; i < 6; ++i)
50  {
51  std::stringstream mat_str;
52  mat_str << "-DMAT" << i << "=" << matrix[i] << " ";
53  options.insert(mat_str.str());
54  }
55 }
56 } // namespace
57 
59 {
60  return BorderSize(1);
61 }
62 
63 void CLWarpAffineKernel::configure(const ICLTensor *input, ICLTensor *output, const std::array<float, 9> &matrix, InterpolationPolicy policy)
64 {
65  configure(CLKernelLibrary::get().get_compile_context(), input, output, matrix, policy);
66 }
67 
68 void CLWarpAffineKernel::configure(const CLCompileContext &compile_context, const ICLTensor *input, ICLTensor *output, const std::array<float, 9> &matrix, InterpolationPolicy policy)
69 {
73 
74  _input = input;
75  _output = output;
76 
77  // Create build options
78  std::set<std::string> options;
79  options_add_matrix(options, matrix);
80  options.emplace(("-DDATA_TYPE=" + get_cl_type_from_data_type(input->info()->data_type())));
81 
82  // Create kernel
83  std::string interpolation_name = string_from_interpolation_policy(policy);
84  std::transform(interpolation_name.begin(), interpolation_name.end(), interpolation_name.begin(), ::tolower);
85  const std::string kernel_name = "warp_affine_" + interpolation_name;
86  _kernel = create_kernel(compile_context, kernel_name, options);
87 
88  // Set static kernel arguments
89  unsigned int idx = 2 * num_arguments_per_2D_tensor(); //Skip the input and output parameters
90  _kernel.setArg<cl_int>(idx++, input->info()->dimension(0));
91  _kernel.setArg<cl_int>(idx++, input->info()->dimension(1));
92 
93  // Configure kernel window
94  constexpr unsigned int num_elems_processed_per_iteration = 4;
95 
96  Window win = calculate_max_window(*output->info(), Steps(num_elems_processed_per_iteration));
97 
98  int total_right = ceil_to_multiple(input->info()->dimension(0), num_elems_processed_per_iteration);
99  const int access_right = total_right + (((total_right - input->info()->dimension(0)) == 0) ? border_size().right : 0);
100 
101  AccessWindowStatic input_access(input->info(), -border_size().left, -border_size().top, access_right, input->info()->dimension(1) + border_size().bottom);
103 
104  update_window_and_padding(win, input_access, output_access);
105 
106  output_access.set_valid_region(win, ValidRegion(Coordinates(), output->info()->tensor_shape()));
107 
108  ICLKernel::configure_internal(win);
109 
110  // Set config_id for enabling LWS tuning
111  _config_id = kernel_name;
112  _config_id += "_";
113  _config_id += lower_string(string_from_data_type(input->info()->data_type()));
114  _config_id += "_";
115  _config_id += support::cpp11::to_string(input->info()->dimension(0));
116  _config_id += "_";
117  _config_id += support::cpp11::to_string(input->info()->dimension(1));
118  _config_id += "_";
119  _config_id += support::cpp11::to_string(input->info()->dimension(2));
120  _config_id += "_";
121  _config_id += support::cpp11::to_string(input->info()->dimension(3));
122  _config_id += "_";
123  _config_id += support::cpp11::to_string(output->info()->dimension(0));
124  _config_id += "_";
125  _config_id += support::cpp11::to_string(output->info()->dimension(1));
126  _config_id += "_";
127  _config_id += support::cpp11::to_string(output->info()->dimension(2));
128  _config_id += "_";
129  _config_id += support::cpp11::to_string(output->info()->dimension(3));
130  _config_id += "_";
131  _config_id += lower_string(string_from_interpolation_policy(policy));
132 }
133 } // namespace arm_compute
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)
InterpolationPolicy
Interpolation method.
Definition: Types.h:392
void configure(const ICLTensor *input, ICLTensor *output, const std::array< float, 9 > &matrix, InterpolationPolicy policy)
Initialize the function&#39;s source, destination, interpolation policy and border_mode.
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.
#define ARM_COMPUTE_ERROR_ON(cond)
If the condition is true then an error message is printed and an exception thrown.
Definition: Error.h:466
static CLKernelLibrary & get()
Access the KernelLibrary singleton.
unsigned int bottom
bottom of the border
Definition: Types.h:377
std::string lower_string(const std::string &val)
Lower a given string.
Definition: Utils.cpp:350
BorderSize border_size() const override
The size of the border for that kernel.
Copyright (c) 2017-2021 Arm Limited.
Implementation of a static rectangular access pattern.
std::string tolower(std::string string)
Convert string to lower case.
Definition: Utility.h:203
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
virtual const TensorShape & tensor_shape() const =0
Size for each dimension of the tensor.
auto ceil_to_multiple(S value, T divisor) -> decltype(((value+divisor - 1)/divisor) *divisor)
Computes the smallest number larger or equal to value that is a multiple of divisor.
Definition: Utils.h:71
Class to describe a number of elements in each dimension.
Definition: Steps.h:40
Coordinates of an item.
Definition: Coordinates.h:37
Implementation of a row access pattern.
std::string kernel_name
const std::string & string_from_interpolation_policy(InterpolationPolicy policy)
Translates a given interpolation policy to a string.
Definition: Utils.cpp:212
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.
static constexpr unsigned int num_arguments_per_2D_tensor()
Returns the number of arguments enqueued per 2D tensor object.
Definition: ICLKernel.h:206
unsigned int left
left of the border
Definition: Types.h:378
unsigned int right
right of the border
Definition: Types.h:376
Output values are determined by averaging the source pixels whose areas fall under the area of the de...
#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
Container for valid region of a window.
Definition: Types.h:188
Describe a multidimensional execution window.
Definition: Window.h:39