Compute Library
 21.02
CLTableLookupKernel.cpp
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25 
30 #include "arm_compute/core/Error.h"
31 #include "arm_compute/core/Types.h"
33 
34 #include <cstdint>
35 #include <string>
36 
37 using namespace arm_compute;
38 
40 {
41  configure(CLKernelLibrary::get().get_compile_context(), input, lut, output);
42 }
43 
44 void CLTableLookupKernel::configure(const CLCompileContext &compile_context, const ICLTensor *input, const ICLLut *lut, ICLTensor *output)
45 {
48  ARM_COMPUTE_ERROR_ON(lut == nullptr);
51 
52  // Create kernel
53  std::string kernel_name = (DataType::S16 == lut->type()) ? "tablelookup_S16" : "tablelookup_U8";
54  _kernel = create_kernel(compile_context, kernel_name);
55 
56  // Set lut argument
57  unsigned int idx = 2 * num_arguments_per_2D_tensor(); //Skip the input and output parameters
58  _kernel.setArg(idx++, lut->cl_buffer());
59  if(DataType::S16 == lut->type())
60  {
61  _kernel.setArg(idx++, lut->index_offset());
62  _kernel.setArg(idx++, static_cast<uint32_t>(lut->num_elements()));
63  }
64 
65  // Configure kernel
66  constexpr unsigned int num_elems_processed_per_iteration = 8;
67  ICLSimple2DKernel::configure(input, output, num_elems_processed_per_iteration);
68 }
1 channel, 1 U8 per channel
#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, const ICLLut *lut, ICLTensor *output)
Initialise the kernel&#39;s input, lut and output.
virtual size_t num_elements() const =0
Returns the total number of elements in the LUT.
Copyright (c) 2017-2021 Arm Limited.
void configure(const ICLTensor *input, ICLTensor *output, unsigned int num_elems_processed_per_iteration, bool border_undefined=false, const BorderSize &border_size=BorderSize())
Configure the kernel.
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
#define ARM_COMPUTE_ERROR_ON_MISMATCHING_DATA_TYPES(...)
Definition: Validate.h:543
std::string kernel_name
virtual const cl::Buffer & cl_buffer() const =0
Interface to be implemented by the child class to return a reference to the OpenCL buffer containing ...
static constexpr unsigned int num_arguments_per_2D_tensor()
Returns the number of arguments enqueued per 2D tensor object.
Definition: ICLKernel.h:206
1 channel, 1 S16 per channel
virtual uint32_t index_offset() const =0
Indicates the offset that needs to be applied to the raw index before performing a lookup in the LUT...
#define ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(t, c,...)
Definition: Validate.h:790
CLCompileContext class.
virtual DataType type() const =0
Returns the type of the LUT.
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
Interface for OpenCL LUT.
Definition: ICLLut.h:40