Compute Library
 21.02
CLAbsoluteDifferenceKernel.cpp
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30 
33 
34 #include <set>
35 #include <string>
36 
37 using namespace arm_compute;
38 
40  : _input1(nullptr), _input2(nullptr), _output(nullptr)
41 {
42 }
43 
44 void CLAbsoluteDifferenceKernel::configure(const ICLTensor *input1, const ICLTensor *input2, ICLTensor *output)
45 {
46  configure(CLKernelLibrary::get().get_compile_context(), input1, input2, output);
47 }
48 
49 void CLAbsoluteDifferenceKernel::configure(const CLCompileContext &compile_context, const ICLTensor *input1, const ICLTensor *input2, ICLTensor *output)
50 {
54  ARM_COMPUTE_ERROR_ON_MSG(output->info()->data_type() == DataType::U8 && (input1->info()->data_type() != DataType::U8 || input2->info()->data_type() != DataType::U8),
55  "The output image can only be U8 if both input images are U8");
56 
57  _input1 = input1;
58  _input2 = input2;
59  _output = output;
60 
61  // Set kernel build options
62  std::set<std::string> build_opts;
63  build_opts.insert("-DDATA_TYPE_IN1=" + get_cl_type_from_data_type(input1->info()->data_type()));
64  build_opts.insert("-DDATA_TYPE_IN2=" + get_cl_type_from_data_type(input2->info()->data_type()));
65  build_opts.insert("-DDATA_TYPE_OUT=" + get_cl_type_from_data_type(output->info()->data_type()));
66 
67  // Create kernel
68  _kernel = create_kernel(compile_context, "absdiff", build_opts);
69 
70  // Configure kernel window
71  constexpr unsigned int num_elems_processed_per_iteration = 16;
72 
73  Window win = calculate_max_window(*input1->info(), Steps(num_elems_processed_per_iteration));
74 
78 
79  update_window_and_padding(win, input1_access, input2_access, output_access);
80 
82  input2->info()->valid_region());
83 
84  output_access.set_valid_region(win, valid_region);
85 
86  ICLKernel::configure_internal(win);
87 }
88 
89 void CLAbsoluteDifferenceKernel::run(const Window &window, cl::CommandQueue &queue)
90 {
93 
95  do
96  {
97  unsigned int idx = 0;
98  add_2D_tensor_argument(idx, _input1, slice);
99  add_2D_tensor_argument(idx, _input2, slice);
100  add_2D_tensor_argument(idx, _output, slice);
101  enqueue(queue, *this, slice, lws_hint());
102  }
103  while(window.slide_window_slice_2D(slice));
104 }
Window first_slice_window_2D() const
First 2D slice of the window.
Definition: Window.h:283
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 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
cl::NDRange lws_hint() const
Return the Local-Workgroup-Size hint.
Definition: ICLKernel.h:276
1 channel, 1 U8 per channel
virtual DataType data_type() const =0
Data type used for each element of the tensor.
static CLKernelLibrary & get()
Access the KernelLibrary singleton.
const ValidRegion valid_region
Definition: Scale.cpp:221
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.
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
void run(const Window &window, cl::CommandQueue &queue) override
Enqueue the OpenCL kernel to process the given window on the passed OpenCL command queue...
Class to describe a number of elements in each dimension.
Definition: Steps.h:40
#define ARM_COMPUTE_ERROR_ON_MSG(cond, msg)
Definition: Error.h:456
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.
ValidRegion intersect_valid_regions(const Ts &... regions)
Intersect multiple valid regions.
Definition: WindowHelpers.h:74
#define ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(k)
Definition: Validate.h:941
1 channel, 1 S16 per channel
#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.
unsigned int num_elems_processed_per_iteration
void configure(const ICLTensor *input1, const ICLTensor *input2, ICLTensor *output)
Set the inputs and output images.
Container for valid region of a window.
Definition: Types.h:188
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)