Compute Library
 21.02
CLSobel7x7Kernel.cpp
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25 
32 #include "support/StringSupport.h"
33 
34 #include <set>
35 #include <string>
36 
37 using namespace arm_compute;
38 
40  : _input(nullptr), _output_x(nullptr), _output_y(nullptr), _run_sobel_x(false), _run_sobel_y(false), _border_size(0)
41 {
42 }
43 
45 {
46  return _border_size;
47 }
48 
49 void CLSobel7x7HorKernel::configure(const ICLTensor *input, ICLTensor *output_x, ICLTensor *output_y, bool border_undefined)
50 {
51  configure(CLKernelLibrary::get().get_compile_context(), input, output_x, output_y, border_undefined);
52 }
53 
54 void CLSobel7x7HorKernel::configure(const CLCompileContext &compile_context, const ICLTensor *input, ICLTensor *output_x, ICLTensor *output_y, bool border_undefined)
55 {
57  ARM_COMPUTE_ERROR_ON((output_x == nullptr) && (output_y == nullptr));
58 
59  _run_sobel_x = output_x != nullptr;
60  _run_sobel_y = output_y != nullptr;
61 
62  if(_run_sobel_x)
63  {
65  }
66 
67  if(_run_sobel_y)
68  {
70  }
71 
72  _input = input;
73  _output_x = output_x;
74  _output_y = output_y;
75  _border_size = BorderSize(border_undefined ? 0 : 3, 3);
76 
77  // Construct kernel name
78  const std::string kernel_name = "sobel_separable1x7";
79 
80  // Set build options
81  std::set<std::string> build_opts;
82 
83  if(_run_sobel_x)
84  {
85  build_opts.insert("-DGRAD_X");
86  }
87 
88  if(_run_sobel_y)
89  {
90  build_opts.insert("-DGRAD_Y");
91  }
92 
93  // Create kernel
94  _kernel = create_kernel(compile_context, kernel_name, build_opts);
95 
96  // Configure kernel window
97  constexpr unsigned int num_elems_processed_per_iteration = 8;
98  constexpr unsigned int num_elems_read_per_iteration = 16;
99  constexpr unsigned int num_elems_written_per_iteration = 8;
100 
101  Window win = calculate_max_window_horizontal(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size());
102 
103  AccessWindowHorizontal input_access(input->info(), -border_size().left, num_elems_read_per_iteration);
104  AccessWindowHorizontal output_x_access(output_x == nullptr ? nullptr : output_x->info(), 0, num_elems_written_per_iteration);
105  AccessWindowHorizontal output_y_access(output_y == nullptr ? nullptr : output_y->info(), 0, num_elems_written_per_iteration);
106 
107  update_window_and_padding(win, input_access, output_x_access, output_y_access);
108 
109  output_x_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
110  output_y_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
111 
112  ICLKernel::configure_internal(win);
113 
114  // Set config_id for enabling LWS tuning
115  _config_id = kernel_name;
116  _config_id += "_";
117  _config_id += lower_string(string_from_data_type(input->info()->data_type()));
118  _config_id += "_";
119  _config_id += support::cpp11::to_string(input->info()->dimension(0));
120  _config_id += "_";
121  _config_id += support::cpp11::to_string(input->info()->dimension(1));
122  _config_id += "_";
123  _config_id += support::cpp11::to_string(border_undefined);
124 }
125 
126 void CLSobel7x7HorKernel::run(const Window &window, cl::CommandQueue &queue)
127 {
130 
132  do
133  {
134  unsigned int idx = 0;
135  add_2D_tensor_argument(idx, _input, slice);
136  add_2D_tensor_argument_if((_run_sobel_x), idx, _output_x, slice);
137  add_2D_tensor_argument_if((_run_sobel_y), idx, _output_y, slice);
138 
139  enqueue(queue, *this, slice, lws_hint());
140  }
141  while(window.slide_window_slice_2D(slice));
142 }
143 
145  : _input_x(nullptr), _input_y(nullptr), _output_x(nullptr), _output_y(nullptr), _run_sobel_x(false), _run_sobel_y(false)
146 {
147 }
148 
150 {
151  return BorderSize{ 3, 0 };
152 }
153 
154 void CLSobel7x7VertKernel::configure(const ICLTensor *input_x, const ICLTensor *input_y, ICLTensor *output_x, ICLTensor *output_y, bool border_undefined)
155 {
156  configure(CLKernelLibrary::get().get_compile_context(), input_x, input_y, output_x, output_y, border_undefined);
157 }
158 
159 void CLSobel7x7VertKernel::configure(const CLCompileContext &compile_context, const ICLTensor *input_x, const ICLTensor *input_y, ICLTensor *output_x, ICLTensor *output_y, bool border_undefined)
160 {
161  ARM_COMPUTE_ERROR_ON((output_x == nullptr) && (output_y == nullptr));
162 
163  _run_sobel_x = output_x != nullptr;
164  _run_sobel_y = output_y != nullptr;
165 
166  if(_run_sobel_x)
167  {
170  }
171 
172  if(_run_sobel_y)
173  {
176  }
177 
178  _input_x = input_x;
179  _input_y = input_y;
180  _output_x = output_x;
181  _output_y = output_y;
182 
183  // Set build options
184  std::set<std::string> build_opts;
185 
186  if(_run_sobel_x)
187  {
188  build_opts.insert("-DGRAD_X");
189  }
190 
191  if(_run_sobel_y)
192  {
193  build_opts.insert("-DGRAD_Y");
194  }
195 
196  // Create kernel
197  const std::string kernel_name = std::string("sobel_separable7x1");
198  _kernel = create_kernel(compile_context, kernel_name, build_opts);
199 
200  const ICLTensor *input = _run_sobel_x ? _input_x : _input_y;
201 
202  // Configure kernel window
203  constexpr unsigned int num_elems_processed_per_iteration = 8;
204  constexpr unsigned int num_elems_written_per_iteration = 8;
205  constexpr unsigned int num_elems_read_per_iteration = 8;
206  constexpr unsigned int num_rows_read_per_iteration = 7;
207 
208  Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size());
209 
210  AccessWindowRectangle input_x_access(input_x == nullptr ? nullptr : input_x->info(), 0, -border_size().top, num_elems_read_per_iteration, num_rows_read_per_iteration);
211  AccessWindowRectangle input_y_access(input_y == nullptr ? nullptr : input_y->info(), 0, -border_size().top, num_elems_read_per_iteration, num_rows_read_per_iteration);
212  AccessWindowHorizontal output_x_access(output_x == nullptr ? nullptr : output_x->info(), 0, num_elems_written_per_iteration);
213  AccessWindowHorizontal output_y_access(output_y == nullptr ? nullptr : output_y->info(), 0, num_elems_written_per_iteration);
214 
215  update_window_and_padding(win, input_x_access, input_y_access, output_x_access, output_y_access);
216 
217  output_x_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
218  output_y_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
219 
220  ICLKernel::configure_internal(win);
221 
222  // Set config_id for enabling LWS tuning
223  _config_id = kernel_name;
224  _config_id += "_";
225  _config_id += lower_string(string_from_data_type(input->info()->data_type()));
226  _config_id += "_";
227  _config_id += support::cpp11::to_string(input->info()->dimension(0));
228  _config_id += "_";
229  _config_id += support::cpp11::to_string(input->info()->dimension(1));
230  _config_id += "_";
231  _config_id += support::cpp11::to_string(border_undefined);
232 }
233 
234 void CLSobel7x7VertKernel::run(const Window &window, cl::CommandQueue &queue)
235 {
238 
240 
241  do
242  {
243  unsigned int idx = 0;
244 
245  add_2D_tensor_argument_if((_run_sobel_x), idx, _input_x, slice);
246  add_2D_tensor_argument_if((_run_sobel_x), idx, _output_x, slice);
247  add_2D_tensor_argument_if((_run_sobel_y), idx, _input_y, slice);
248  add_2D_tensor_argument_if((_run_sobel_y), idx, _output_y, slice);
249 
250  _kernel.setArg(idx++, 0 /*dummy*/);
251 
252  enqueue(queue, *this, slice, lws_hint());
253  }
254  while(window.slide_window_slice_2D(slice));
255 }
Window first_slice_window_2D() const
First 2D slice of the window.
Definition: Window.h:283
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)
const Window & window() const
The maximum window the kernel can be executed on.
Definition: IKernel.cpp:28
void add_2D_tensor_argument_if(bool cond, unsigned int &idx, const ICLTensor *tensor, const Window &window)
Add the passed 2D tensor&#39;s parameters to the object&#39;s kernel&#39;s arguments starting from the index idx ...
Definition: ICLKernel.h:159
void enqueue(IGCKernel &kernel, const Window &window, const gles::NDRange &lws=gles::NDRange(1U, 1U, 1U))
Add the kernel to the command queue with the given window.
Definition: IGCKernel.cpp:41
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
cl::NDRange lws_hint() const
Return the Local-Workgroup-Size hint.
Definition: ICLKernel.h:276
1 channel, 1 U8 per channel
void run(const Window &window, cl::CommandQueue &queue) override
Enqueue the OpenCL kernel to process the given window on the passed OpenCL command queue...
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.
void run(const Window &window, cl::CommandQueue &queue) override
Enqueue the OpenCL kernel to process the given window on the passed OpenCL command queue...
#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.
void configure(const ICLTensor *input_x, const ICLTensor *input_y, ICLTensor *output_x, ICLTensor *output_y, bool border_undefined)
Initialise the kernel&#39;s source, destination and border.
std::string lower_string(const std::string &val)
Lower a given string.
Definition: Utils.cpp:350
Window calculate_max_window_horizontal(const ValidRegion &valid_region, const Steps &steps, bool skip_border, BorderSize border_size)
bool slide_window_slice_2D(Window &slice) const
Slide the passed 2D window slice.
Definition: Window.h:323
Copyright (c) 2017-2021 Arm Limited.
virtual ValidRegion valid_region() const =0
Valid region of the tensor.
CLSobel7x7VertKernel()
Default constructor: initialize all the pointers to nullptr and parameters to zero.
1 channel, 1 S32 per channel
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
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
BorderSize border_size() const override
The size of the border for that kernel.
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
void configure(const ICLTensor *input, ICLTensor *output_x, ICLTensor *output_y, bool border_undefined)
Initialise the kernel&#39;s source, destination and border.
#define ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(k)
Definition: Validate.h:941
#define ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(t, c,...)
Definition: Validate.h:790
CLCompileContext class.
void add_2D_tensor_argument(unsigned int &idx, const ICLTensor *tensor, const Window &window)
Add the passed 2D tensor&#39;s parameters to the object&#39;s kernel&#39;s arguments starting from the index idx...
Definition: ICLKernel.h:148
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.
CLSobel7x7HorKernel()
Default constructor: initialize all the pointers to nullptr and parameters to zero.
unsigned int num_elems_processed_per_iteration
Describe a multidimensional execution window.
Definition: Window.h:39
#define ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(f, s)
Definition: Validate.h:205
SimpleTensor< T > slice(const SimpleTensor< T > &src, Coordinates starts, Coordinates ends)
BorderSize border_size() const override
The size of the border for that kernel.