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_NECHANNELEXTRACTKERNEL_H 25 #define ARM_COMPUTE_NECHANNELEXTRACTKERNEL_H 26 27 #include "arm_compute/core/Types.h" 28 #include "src/core/NEON/INESimpleKernel.h" 29 30 namespace arm_compute 31 { 32 class IMultiImage; 33 class ITensor; 34 using IImage = ITensor; 35 36 /** Interface for the channel extract kernel */ 37 class NEChannelExtractKernel : public INESimpleKernel 38 { 39 public: name()40 const char *name() const override 41 { 42 return "NEChannelExtractKernel"; 43 } 44 /** Default constructor */ 45 NEChannelExtractKernel(); 46 /** Prevent instances of this class from being copied (As this class contains pointers) */ 47 NEChannelExtractKernel(const NEChannelExtractKernel &) = delete; 48 /** Prevent instances of this class from being copied (As this class contains pointers) */ 49 NEChannelExtractKernel &operator=(const NEChannelExtractKernel &) = delete; 50 /** Allow instances of this class to be moved */ 51 NEChannelExtractKernel(NEChannelExtractKernel &&) = default; 52 /** Allow instances of this class to be moved */ 53 NEChannelExtractKernel &operator=(NEChannelExtractKernel &&) = default; 54 /** Default destructor */ 55 ~NEChannelExtractKernel() = default; 56 57 /** Set the input and output of the kernel 58 * 59 * @param[in] input Source tensor. Formats supported: RGB888/RGBA8888/YUYV422/UYVY422 60 * @param[in] channel Channel to extract. 61 * @param[out] output Destination tensor. Format supported: U8 62 */ 63 void configure(const ITensor *input, Channel channel, ITensor *output); 64 /** Set the input and output of the kernel 65 * 66 * @param[in] input Multi-planar source image. Formats supported: NV12/NV21/IYUV/YUV444 67 * @param[in] channel Channel to extract. 68 * @param[out] output Single-planar destination image. Format supported: U8 69 */ 70 void configure(const IMultiImage *input, Channel channel, IImage *output); 71 72 // Inherited methods overridden: 73 void run(const Window &window, const ThreadInfo &info) override; 74 75 private: 76 /** Extract one channel from a two channel planar tensor. 77 * 78 * @param[in] win Region on which to execute the kernel. 79 */ 80 void extract_1C_from_2C_img(const Window &win); 81 /** Extract one channel from a three channel planar tensor. 82 * 83 * @param[in] win Region on which to execute the kernel. 84 */ 85 void extract_1C_from_3C_img(const Window &win); 86 /** Extract one channel from a four channel planar tensor. 87 * 88 * @param[in] win Region on which to execute the kernel. 89 */ 90 void extract_1C_from_4C_img(const Window &win); 91 /** Extract U/V channel from a single planar YUVY/UYVY tensor. 92 * 93 * @param[in] win Region on which to execute the kernel. 94 */ 95 void extract_YUYV_uv(const Window &win); 96 /** Copies a full plane to the output tensor. 97 * 98 * @param[in] win Region on which to execute the kernel. 99 */ 100 void copy_plane(const Window &win); 101 /** Common signature for all the specialised ChannelExtract functions 102 * 103 * @param[in] window Region on which to execute the kernel. 104 */ 105 using ChannelExtractFunction = void (NEChannelExtractKernel::*)(const Window &window); 106 /** ChannelExtract function to use for the particular tensor types passed to configure() */ 107 ChannelExtractFunction _func; 108 unsigned int _lut_index; 109 }; 110 } // namespace arm_compute 111 #endif /* ARM_COMPUTE_NECHANNELEXTRACTKERNEL_H */ 112