Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016, 2017 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 __UTILS_UTILS_H__ |
| 25 | #define __UTILS_UTILS_H__ |
| 26 | |
| 27 | #include "arm_compute/core/Helpers.h" |
| 28 | #include "arm_compute/core/ITensor.h" |
| 29 | #include "arm_compute/core/Types.h" |
| 30 | #include "arm_compute/core/Validate.h" |
| 31 | #include "arm_compute/runtime/Tensor.h" |
| 32 | |
| 33 | #ifdef ARM_COMPUTE_CL |
| 34 | #include "arm_compute/core/CL/OpenCL.h" |
| 35 | #include "arm_compute/runtime/CL/CLTensor.h" |
| 36 | #endif /* ARM_COMPUTE_CL */ |
| 37 | |
| 38 | #include <cstdlib> |
| 39 | #include <cstring> |
| 40 | #include <fstream> |
| 41 | #include <iostream> |
| 42 | |
| 43 | namespace arm_compute |
| 44 | { |
| 45 | namespace utils |
| 46 | { |
| 47 | /** Signature of an example to run |
| 48 | * |
| 49 | * @param[in] argc Number of command line arguments |
| 50 | * @param[in] argv Command line arguments |
| 51 | */ |
| 52 | using example = void(int argc, const char **argv); |
| 53 | |
| 54 | /** Run an example and handle the potential exceptions it throws |
| 55 | * |
| 56 | * @param[in] argc Number of command line arguments |
| 57 | * @param[in] argv Command line arguments |
| 58 | * @param[in] func Pointer to the function containing the code to run |
| 59 | */ |
| 60 | int run_example(int argc, const char **argv, example &func); |
| 61 | |
| 62 | /** Draw a RGB rectangular window for the detected object |
| 63 | * |
| 64 | * @param[in, out] tensor Input tensor where the rectangle will be drawn on. Format supported: RGB888 |
| 65 | * @param[in] rect Geometry of the rectangular window |
| 66 | * @param[in] r Red colour to use |
| 67 | * @param[in] g Green colour to use |
| 68 | * @param[in] b Blue colour to use |
| 69 | */ |
| 70 | void draw_detection_rectangle(arm_compute::ITensor *tensor, const arm_compute::DetectionWindow &rect, uint8_t r, uint8_t g, uint8_t b); |
| 71 | |
| 72 | /** Parse the ppm header from an input file stream. At the end of the execution, |
| 73 | * the file position pointer will be located at the first pixel stored in the ppm file |
| 74 | * |
| 75 | * @param[in] fs Input file stream to parse |
| 76 | * |
| 77 | * @return The width, height and max value stored in the header of the PPM file |
| 78 | */ |
| 79 | std::tuple<unsigned int, unsigned int, int> parse_ppm_header(std::ifstream &fs); |
| 80 | |
| 81 | /** Class to load the content of a PPM file into an Image |
| 82 | */ |
| 83 | class PPMLoader |
| 84 | { |
| 85 | public: |
| 86 | PPMLoader() |
| 87 | : _fs(), _width(0), _height(0) |
| 88 | { |
| 89 | } |
| 90 | /** Open a PPM file and reads its metadata (Width, height) |
| 91 | * |
| 92 | * @param[in] ppm_filename File to open |
| 93 | */ |
| 94 | void open(const std::string &ppm_filename) |
| 95 | { |
| 96 | ARM_COMPUTE_ERROR_ON(is_open()); |
| 97 | try |
| 98 | { |
| 99 | _fs.exceptions(std::ifstream::failbit | std::ifstream::badbit); |
| 100 | _fs.open(ppm_filename, std::ios::in | std::ios::binary); |
| 101 | |
| 102 | unsigned int max_val = 0; |
| 103 | std::tie(_width, _height, max_val) = parse_ppm_header(_fs); |
| 104 | |
| 105 | ARM_COMPUTE_ERROR_ON_MSG(max_val >= 256, "2 bytes per colour channel not supported in file %s", ppm_filename.c_str()); |
| 106 | } |
| 107 | catch(const std::ifstream::failure &e) |
| 108 | { |
| 109 | ARM_COMPUTE_ERROR("Accessing %s: %s", ppm_filename.c_str(), e.what()); |
| 110 | } |
| 111 | } |
| 112 | /** Return true if a PPM file is currently open |
| 113 | */ |
| 114 | bool is_open() |
| 115 | { |
| 116 | return _fs.is_open(); |
| 117 | } |
| 118 | |
| 119 | /** Initialise an image's metadata with the dimensions of the PPM file currently open |
| 120 | * |
| 121 | * @param[out] image Image to initialise |
| 122 | * @param[in] format Format to use for the image (Must be RGB888 or U8) |
| 123 | */ |
| 124 | template <typename T> |
| 125 | void init_image(T &image, arm_compute::Format format) |
| 126 | { |
| 127 | ARM_COMPUTE_ERROR_ON(!is_open()); |
| 128 | ARM_COMPUTE_ERROR_ON(format != arm_compute::Format::RGB888 && format != arm_compute::Format::U8); |
| 129 | |
| 130 | // Use the size of the input PPM image |
| 131 | arm_compute::TensorInfo image_info(_width, _height, format); |
| 132 | image.allocator()->init(image_info); |
| 133 | } |
| 134 | |
| 135 | /** Fill an image with the content of the currently open PPM file. |
| 136 | * |
| 137 | * @note If the image is a CLImage, the function maps and unmaps the image |
| 138 | * |
| 139 | * @param[in,out] image Image to fill (Must be allocated, and of matching dimensions with the opened PPM). |
| 140 | */ |
| 141 | template <typename T> |
| 142 | void fill_image(T &image) |
| 143 | { |
| 144 | ARM_COMPUTE_ERROR_ON(!is_open()); |
| 145 | ARM_COMPUTE_ERROR_ON(image.info()->dimension(0) != _width || image.info()->dimension(1) != _height); |
| 146 | ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(&image, arm_compute::Format::U8, arm_compute::Format::RGB888); |
| 147 | try |
| 148 | { |
| 149 | #ifdef ARM_COMPUTE_CL |
| 150 | // Map buffer if creating a CLTensor |
| 151 | if(std::is_same<typename std::decay<T>::type, arm_compute::CLImage>::value) |
| 152 | { |
| 153 | image.map(); |
| 154 | } |
| 155 | #endif |
| 156 | // Check if the file is large enough to fill the image |
| 157 | const size_t current_position = _fs.tellg(); |
| 158 | _fs.seekg(0, std::ios_base::end); |
| 159 | const size_t end_position = _fs.tellg(); |
| 160 | _fs.seekg(current_position, std::ios_base::beg); |
| 161 | |
| 162 | ARM_COMPUTE_ERROR_ON_MSG((end_position - current_position) < image.info()->tensor_shape().total_size() * image.info()->element_size(), |
| 163 | "Not enough data in file"); |
| 164 | ARM_COMPUTE_UNUSED(end_position); |
| 165 | |
| 166 | switch(image.info()->format()) |
| 167 | { |
| 168 | case arm_compute::Format::U8: |
| 169 | { |
| 170 | // We need to convert the data from RGB to grayscale: |
| 171 | // Iterate through every pixel of the image |
| 172 | arm_compute::Window window; |
| 173 | window.set(arm_compute::Window::DimX, arm_compute::Window::Dimension(0, _width, 1)); |
| 174 | window.set(arm_compute::Window::DimY, arm_compute::Window::Dimension(0, _height, 1)); |
| 175 | |
| 176 | arm_compute::Iterator out(&image, window); |
| 177 | |
| 178 | unsigned char red = 0; |
| 179 | unsigned char green = 0; |
| 180 | unsigned char blue = 0; |
| 181 | |
| 182 | arm_compute::execute_window_loop(window, [&](const arm_compute::Coordinates & id) |
| 183 | { |
| 184 | red = _fs.get(); |
| 185 | green = _fs.get(); |
| 186 | blue = _fs.get(); |
| 187 | |
| 188 | *out.ptr() = 0.2126f * red + 0.7152f * green + 0.0722f * blue; |
| 189 | }, |
| 190 | out); |
| 191 | |
| 192 | break; |
| 193 | } |
| 194 | case arm_compute::Format::RGB888: |
| 195 | { |
| 196 | // There is no format conversion needed: we can simply copy the content of the input file to the image one row at the time. |
| 197 | // Create a vertical window to iterate through the image's rows: |
| 198 | arm_compute::Window window; |
| 199 | window.set(arm_compute::Window::DimY, arm_compute::Window::Dimension(0, _height, 1)); |
| 200 | |
| 201 | arm_compute::Iterator out(&image, window); |
| 202 | |
| 203 | arm_compute::execute_window_loop(window, [&](const arm_compute::Coordinates & id) |
| 204 | { |
| 205 | // Copy one row from the input file to the current row of the image: |
| 206 | _fs.read(reinterpret_cast<std::fstream::char_type *>(out.ptr()), _width * image.info()->element_size()); |
| 207 | }, |
| 208 | out); |
| 209 | |
| 210 | break; |
| 211 | } |
| 212 | default: |
| 213 | ARM_COMPUTE_ERROR("Unsupported format"); |
| 214 | } |
| 215 | |
| 216 | #ifdef ARM_COMPUTE_CL |
| 217 | // Unmap buffer if creating a CLTensor |
| 218 | if(std::is_same<typename std::decay<T>::type, arm_compute::CLTensor>::value) |
| 219 | { |
| 220 | image.unmap(); |
| 221 | } |
| 222 | #endif |
| 223 | } |
| 224 | catch(const std::ifstream::failure &e) |
| 225 | { |
| 226 | ARM_COMPUTE_ERROR("Loading PPM file: %s", e.what()); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | private: |
| 231 | std::ifstream _fs; |
| 232 | unsigned int _width, _height; |
| 233 | }; |
| 234 | |
| 235 | /** Template helper function to save a tensor image to a PPM file. |
| 236 | * |
| 237 | * @note Only U8 and RGB888 formats supported. |
| 238 | * @note Only works with 2D tensors. |
| 239 | * @note If the input tensor is a CLTensor, the function maps and unmaps the image |
| 240 | * |
| 241 | * @param[in] tensor The tensor to save as PPM file |
| 242 | * @param[in] ppm_filename Filename of the file to create. |
| 243 | */ |
| 244 | template <typename T> |
| 245 | void save_to_ppm(T &tensor, const std::string &ppm_filename) |
| 246 | { |
| 247 | ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(&tensor, arm_compute::Format::RGB888, arm_compute::Format::U8); |
| 248 | ARM_COMPUTE_ERROR_ON(tensor.info()->num_dimensions() > 2); |
| 249 | |
| 250 | std::ofstream fs; |
| 251 | |
| 252 | try |
| 253 | { |
| 254 | fs.exceptions(std::ofstream::failbit | std::ofstream::badbit | std::ofstream::eofbit); |
| 255 | fs.open(ppm_filename, std::ios::out | std::ios::binary); |
| 256 | |
| 257 | const unsigned int width = tensor.info()->tensor_shape()[0]; |
| 258 | const unsigned int height = tensor.info()->tensor_shape()[1]; |
| 259 | |
| 260 | fs << "P6\n" |
| 261 | << width << " " << height << " 255\n"; |
| 262 | |
| 263 | #ifdef ARM_COMPUTE_CL |
| 264 | // Map buffer if creating a CLTensor |
| 265 | if(std::is_same<typename std::decay<T>::type, arm_compute::CLTensor>::value) |
| 266 | { |
| 267 | tensor.map(); |
| 268 | } |
| 269 | #endif |
| 270 | |
| 271 | switch(tensor.info()->format()) |
| 272 | { |
| 273 | case arm_compute::Format::U8: |
| 274 | { |
| 275 | arm_compute::Window window; |
| 276 | window.set(arm_compute::Window::DimX, arm_compute::Window::Dimension(0, width, 1)); |
| 277 | window.set(arm_compute::Window::DimY, arm_compute::Window::Dimension(0, height, 1)); |
| 278 | |
| 279 | arm_compute::Iterator in(&tensor, window); |
| 280 | |
| 281 | arm_compute::execute_window_loop(window, [&](const arm_compute::Coordinates & id) |
| 282 | { |
| 283 | const unsigned char value = *in.ptr(); |
| 284 | |
| 285 | fs << value << value << value; |
| 286 | }, |
| 287 | in); |
| 288 | |
| 289 | break; |
| 290 | } |
| 291 | case arm_compute::Format::RGB888: |
| 292 | { |
| 293 | arm_compute::Window window; |
| 294 | window.set(arm_compute::Window::DimX, arm_compute::Window::Dimension(0, width, width)); |
| 295 | window.set(arm_compute::Window::DimY, arm_compute::Window::Dimension(0, height, 1)); |
| 296 | |
| 297 | arm_compute::Iterator in(&tensor, window); |
| 298 | |
| 299 | arm_compute::execute_window_loop(window, [&](const arm_compute::Coordinates & id) |
| 300 | { |
| 301 | fs.write(reinterpret_cast<std::fstream::char_type *>(in.ptr()), width * tensor.info()->element_size()); |
| 302 | }, |
| 303 | in); |
| 304 | |
| 305 | break; |
| 306 | } |
| 307 | default: |
| 308 | ARM_COMPUTE_ERROR("Unsupported format"); |
| 309 | } |
| 310 | #ifdef ARM_COMPUTE_CL |
| 311 | // Unmap buffer if creating a CLTensor |
| 312 | if(std::is_same<typename std::decay<T>::type, arm_compute::CLTensor>::value) |
| 313 | { |
| 314 | tensor.unmap(); |
| 315 | } |
| 316 | #endif |
| 317 | } |
| 318 | catch(const std::ofstream::failure &e) |
| 319 | { |
| 320 | ARM_COMPUTE_ERROR("Writing %s: (%s)", ppm_filename.c_str(), e.what()); |
| 321 | } |
| 322 | } |
| 323 | } // namespace utils |
| 324 | } // namespace arm_compute |
| 325 | #endif /* __UTILS_UTILS_H__*/ |