1 /* 2 * Copyright (c) 2016-2020 Arm Limited. 3 * 4 * SPDX-License-Identifier: MIT 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in all 14 * copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 #ifndef ARM_COMPUTE_CLHISTOGRAMKERNEL_H 25 #define ARM_COMPUTE_CLHISTOGRAMKERNEL_H 26 27 #include "src/core/CL/ICLKernel.h" 28 29 namespace arm_compute 30 { 31 class ICLDistribution1D; 32 class ICLTensor; 33 using ICLImage = ICLTensor; 34 35 /** Interface to run the histogram kernel. This kernel processes the part of image with width can be divided by 16. 36 * If the image width is not a multiple of 16, remaining pixels have to be processed with the @ref CLHistogramBorderKernel 37 */ 38 class CLHistogramKernel : public ICLKernel 39 { 40 public: 41 /** Constructor */ 42 CLHistogramKernel(); 43 /** Prevent instances of this class from being copied (As this class contains pointers) */ 44 CLHistogramKernel(const CLHistogramKernel &) = delete; 45 /** Prevent instances of this class from being copied (As this class contains pointers) */ 46 CLHistogramKernel &operator=(const CLHistogramKernel &) = delete; 47 /** Allow instances of this class to be moved */ 48 CLHistogramKernel(CLHistogramKernel &&) = default; 49 /** Allow instances of this class to be moved */ 50 CLHistogramKernel &operator=(CLHistogramKernel &&) = default; 51 /** Initialise the kernel's input, output and border mode. 52 * 53 * @param[in] input Source image. Data types supported: U8. 54 * @param[out] output Destination distribution. 55 */ 56 void configure(const ICLImage *input, ICLDistribution1D *output); 57 /** Initialise the kernel's input, output and border mode. 58 * 59 * @param[in] compile_context The compile context to be used. 60 * @param[in] input Source image. Data types supported: U8. 61 * @param[out] output Destination distribution. 62 */ 63 void configure(const CLCompileContext &compile_context, const ICLImage *input, ICLDistribution1D *output); 64 65 // Inherited methods overridden: 66 void run(const Window &window, cl::CommandQueue &queue) override; 67 68 private: 69 const ICLImage *_input; 70 ICLDistribution1D *_output; 71 }; 72 73 /** Interface to run the histogram kernel to handle the leftover part of image 74 * 75 */ 76 class CLHistogramBorderKernel : public ICLKernel 77 { 78 public: 79 /** Constructor */ 80 CLHistogramBorderKernel(); 81 /** Prevent instances of this class from being copied (As this class contains pointers) */ 82 CLHistogramBorderKernel(const CLHistogramBorderKernel &) = delete; 83 /** Prevent instances of this class from being copied (As this class contains pointers) */ 84 CLHistogramBorderKernel &operator=(const CLHistogramBorderKernel &) = delete; 85 /** Allow instances of this class to be moved */ 86 CLHistogramBorderKernel(CLHistogramBorderKernel &&) = default; 87 /** Allow instances of this class to be moved */ 88 CLHistogramBorderKernel &operator=(CLHistogramBorderKernel &&) = default; 89 /** Initialise the kernel's input, output and border mode. 90 * 91 * @param[in] input Source image. Data types supported: U8. 92 * @param[out] output Destination distribution. 93 */ 94 void configure(const ICLImage *input, ICLDistribution1D *output); 95 /** Initialise the kernel's input, output and border mode. 96 * 97 * @param[in] compile_context The compile context to be used. 98 * @param[in] input Source image. Data types supported: U8. 99 * @param[out] output Destination distribution. 100 */ 101 void configure(const CLCompileContext &compile_context, const ICLImage *input, ICLDistribution1D *output); 102 103 // Inherited methods overridden: 104 void run(const Window &window, cl::CommandQueue &queue) override; 105 106 private: 107 const ICLImage *_input; 108 ICLDistribution1D *_output; 109 }; 110 } // namespace arm_compute 111 #endif /* ARM_COMPUTE_CLHISTOGRAMKERNEL_H*/ 112