| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /*************************************** | ||
| 2 | Auteur : Pierre Aubert | ||
| 3 | Mail : pierre.aubert@lapp.in2p3.fr | ||
| 4 | Licence : CeCILL-C | ||
| 5 | ****************************************/ | ||
| 6 | |||
| 7 | #include <string.h> | ||
| 8 | |||
| 9 | #include "PImagePng.h" | ||
| 10 | |||
| 11 | ///Default constructor of PImagePng | ||
| 12 | 18 | PImagePng::PImagePng(){ | |
| 13 | 18 | initialisationPImagePng(); | |
| 14 | 18 | } | |
| 15 | |||
| 16 | ///Copy constructor of PImagePng | ||
| 17 | /** @param other : class to copy | ||
| 18 | */ | ||
| 19 | 1 | PImagePng::PImagePng(const PImagePng & other){ | |
| 20 | 1 | initialisationPImagePng(); | |
| 21 | 1 | copyPImagePng(other); | |
| 22 | 1 | } | |
| 23 | |||
| 24 | ///Destructor of PImagePng | ||
| 25 | 19 | PImagePng::~PImagePng(){ | |
| 26 | 19 | clear(); | |
| 27 | 19 | } | |
| 28 | |||
| 29 | ///Definition of equal operator of PImagePng | ||
| 30 | /** @param other : class to copy | ||
| 31 | * @return copied class | ||
| 32 | */ | ||
| 33 | 1 | PImagePng & PImagePng::operator = (const PImagePng & other){ | |
| 34 | 1 | copyPImagePng(other); | |
| 35 | 1 | return *this; | |
| 36 | } | ||
| 37 | |||
| 38 | ///Create an image | ||
| 39 | /** @param width : width of the image | ||
| 40 | * @param height : height of the image | ||
| 41 | * @param colorType : color type of the image (ex RGB) | ||
| 42 | * @return true on success, false otherwise | ||
| 43 | */ | ||
| 44 | 18 | bool PImagePng::createImage(size_t width, size_t height, PImagePng::ColorType colorType){ | |
| 45 | 18 | p_image.width = width; | |
| 46 | 18 | p_image.height = height; | |
| 47 | 18 | p_colorType = colorType; | |
| 48 |
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18 | if(colorType == PImagePng::RGB){ |
| 49 | 13 | p_image.format = PNG_FORMAT_RGB; | |
| 50 | 13 | p_nbBytePerPixel = 3; | |
| 51 |
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5 | }else if(colorType == PImagePng::RGBA){ |
| 52 | 5 | p_image.format = PNG_FORMAT_RGBA; | |
| 53 | 5 | p_nbBytePerPixel = 4; | |
| 54 | } | ||
| 55 |
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18 | if(p_buffer != NULL){ |
| 56 | 1 | free(p_buffer); | |
| 57 | } | ||
| 58 |
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18 | p_buffer = (png_byte*)malloc(PNG_IMAGE_SIZE(p_image)); |
| 59 | |||
| 60 | // png_structp pngStruct = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); | ||
| 61 | // if(pngStruct == NULL){return false;} | ||
| 62 | // png_infop infoPtr = png_create_info_struct(pngStruct); | ||
| 63 | // if(infoPtr == NULL){return false;} | ||
| 64 | // png_set_IHDR(pngStruct, infoPtr, width, height, | ||
| 65 | // 8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE, | ||
| 66 | // PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); | ||
| 67 | 18 | return true; | |
| 68 | } | ||
| 69 | |||
| 70 | ///Read the given png image | ||
| 71 | /** @param fileName : name of the file to be read | ||
| 72 | * @return true on success, false otherwise | ||
| 73 | */ | ||
| 74 | 4 | bool PImagePng::read(const PPath & fileName){ | |
| 75 |
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4 | if(fileName == ""){return false;} |
| 76 |
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3 | if(!check_is_png(fileName)){ |
| 77 | 2 | std::cerr << "PImagePng::read : file is not a png '"<<fileName<<"'" << std::endl; | |
| 78 | 2 | return false; | |
| 79 | } | ||
| 80 |
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1 | if(png_image_begin_read_from_file(&p_image, fileName.c_str()) == 0){ |
| 81 | ✗ | std::cerr << "PImagePng::read : cannot read png image '"<<fileName<<"'" << std::endl; | |
| 82 | ✗ | return false; | |
| 83 | } | ||
| 84 | /* Set the format in which to read the PNG file; this code chooses a | ||
| 85 | * simple sRGB format with a non-associated alpha channel, adequate to | ||
| 86 | * store most images. | ||
| 87 | */ | ||
| 88 |
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1 | if(p_image.format == PNG_FORMAT_RGB){ |
| 89 | ✗ | p_nbBytePerPixel = 3; | |
| 90 | ✗ | p_colorType = PImagePng::RGB; | |
| 91 |
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1 | }else if(p_image.format == PNG_FORMAT_RGBA){ |
| 92 | 1 | p_nbBytePerPixel = 4; | |
| 93 | 1 | p_colorType = PImagePng::RGBA; | |
| 94 | } | ||
| 95 | |||
| 96 | /* Now allocate enough memory to hold the image in this format; the | ||
| 97 | * PNG_IMAGE_SIZE macro uses the information about the image (width, | ||
| 98 | * height and format) stored in 'image'. | ||
| 99 | */ | ||
| 100 |
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1 | p_buffer = (png_byte*)malloc(PNG_IMAGE_SIZE(p_image)); |
| 101 |
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2 | if(p_buffer != NULL && |
| 102 |
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1 | png_image_finish_read(&p_image, NULL/*background*/, p_buffer, 0/*row_stride*/, NULL/*colormap*/) != 0){ |
| 103 | 1 | return true; | |
| 104 | } | ||
| 105 | ✗ | return false; | |
| 106 | } | ||
| 107 | |||
| 108 | ///Write a png file | ||
| 109 | /** @param fileName : name fo the png file to be written | ||
| 110 | * @return true on success, false otherwise | ||
| 111 | */ | ||
| 112 | 15 | bool PImagePng::write(const PPath & fileName){ | |
| 113 |
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15 | if(fileName == "" || p_buffer == NULL){return false;} |
| 114 |
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15 | if(png_image_write_to_file(&p_image, fileName.c_str(), 0/*convert_to_8bit*/, p_buffer, 0/*row_stride*/, NULL/*colormap*/) != 0){ |
| 115 | /* The image has been written successfully. */ | ||
| 116 | 15 | return true; | |
| 117 | } | ||
| 118 | ✗ | return false; | |
| 119 | } | ||
| 120 | |||
| 121 | ///Clear the image and buffer | ||
| 122 | 19 | void PImagePng::clear(){ | |
| 123 |
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19 | if(p_buffer == NULL){ |
| 124 | 1 | png_image_free(&p_image); | |
| 125 | }else{ | ||
| 126 | 18 | free(p_buffer); | |
| 127 | } | ||
| 128 | 19 | } | |
| 129 | |||
| 130 | ///Fill the image with the given color | ||
| 131 | /** @param red : red proportion | ||
| 132 | * @param green : green proportion | ||
| 133 | * @param blue : blue proportion | ||
| 134 | * @param alpha : transparence proportion | ||
| 135 | */ | ||
| 136 | 9 | void PImagePng::fill(color_t red, color_t green, color_t blue, color_t alpha){ | |
| 137 |
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4329 | for(png_uint_32 j(0u); j < p_image.height; ++j){ |
| 138 |
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2769120 | for(png_uint_32 i(0u); i < p_image.width; ++i){ |
| 139 | 2764800 | setColor(i, j, red, green, blue); | |
| 140 | } | ||
| 141 | } | ||
| 142 | 9 | } | |
| 143 | |||
| 144 | ///Set the color of the pixel at (idxWidth, idxHeight) | ||
| 145 | /** @param idxWidth : index of the pixel on the image width | ||
| 146 | * @param idxHeight : index of the pixel on the image height | ||
| 147 | * @param red : red proportion | ||
| 148 | * @param green : green proportion | ||
| 149 | * @param blue : blue proportion | ||
| 150 | */ | ||
| 151 | 4608000 | void PImagePng::setColor(size_t idxWidth, size_t idxHeight, color_t red, color_t green, color_t blue){ | |
| 152 | 4608000 | color_t alpha(255); | |
| 153 | 4608000 | setColor(idxWidth, idxHeight, red, green , blue, alpha); | |
| 154 | 4608000 | } | |
| 155 | |||
| 156 | ///Set the color of the pixel at (idxWidth, idxHeight) | ||
| 157 | /** @param idxWidth : index of the pixel on the image width | ||
| 158 | * @param idxHeight : index of the pixel on the image height | ||
| 159 | * @param red : red proportion | ||
| 160 | * @param green : green proportion | ||
| 161 | * @param blue : blue proportion | ||
| 162 | * @param alpha : alpha proportion | ||
| 163 | */ | ||
| 164 | 5529600 | void PImagePng::setColor(size_t idxWidth, size_t idxHeight, color_t red, color_t green, color_t blue, color_t alpha){ | |
| 165 | 5529600 | size_t index((idxHeight*p_image.width + idxWidth)*p_nbBytePerPixel); | |
| 166 | 5529600 | p_buffer[index] = red; | |
| 167 | 5529600 | p_buffer[index + 1lu] = green; | |
| 168 | 5529600 | p_buffer[index + 2lu] = blue; | |
| 169 |
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5529600 | if(p_nbBytePerPixel >= 4lu){ |
| 170 | 1843200 | p_buffer[index + 3lu] = alpha; | |
| 171 | } | ||
| 172 | 5529600 | } | |
| 173 | |||
| 174 | ///Get the color of the pixel at (idxWidth, idxHeight) | ||
| 175 | /** @param idxWidth : index of the pixel on the image width | ||
| 176 | * @param idxHeight : index of the pixel on the image height | ||
| 177 | * @param[out] red : red proportion | ||
| 178 | * @param[out] green : green proportion | ||
| 179 | * @param[out] blue : blue proportion | ||
| 180 | */ | ||
| 181 | ✗ | void PImagePng::getColor(size_t idxWidth, size_t idxHeight, color_t & red, color_t & green, color_t & blue) const{ | |
| 182 | ✗ | color_t alpha(255); | |
| 183 | ✗ | getColor(idxWidth, idxHeight, red, green , blue, alpha); | |
| 184 | ✗ | } | |
| 185 | |||
| 186 | ///Get the color of the pixel at (idxWidth, idxHeight) | ||
| 187 | /** @param idxWidth : index of the pixel on the image width | ||
| 188 | * @param idxHeight : index of the pixel on the image height | ||
| 189 | * @param[out] red : red proportion | ||
| 190 | * @param[out] green : green proportion | ||
| 191 | * @param[out] blue : blue proportion | ||
| 192 | * @param[out] alpha : alpha proportion | ||
| 193 | */ | ||
| 194 | 2 | void PImagePng::getColor(size_t idxWidth, size_t idxHeight, color_t & red, color_t & green, color_t & blue, color_t & alpha) const{ | |
| 195 | 2 | size_t index((idxHeight*p_image.width + idxWidth)*p_nbBytePerPixel); | |
| 196 | 2 | red = p_buffer[index]; | |
| 197 | 2 | green = p_buffer[index + 1lu]; | |
| 198 | 2 | blue = p_buffer[index + 2lu]; | |
| 199 |
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2 | if(p_nbBytePerPixel >= 4lu){ |
| 200 | 2 | alpha = p_buffer[index + 3lu]; | |
| 201 | } | ||
| 202 | 2 | } | |
| 203 | |||
| 204 | ///Get the width of the image | ||
| 205 | /** @return width of the image | ||
| 206 | */ | ||
| 207 | 11 | unsigned int PImagePng::getWidth() const{return p_image.width;} | |
| 208 | |||
| 209 | ///Get the height of the image | ||
| 210 | /** @return height of the image | ||
| 211 | */ | ||
| 212 | 11 | unsigned int PImagePng::getHeight() const{return p_image.height;} | |
| 213 | |||
| 214 | ///Get the buffer data of the current PImagePng | ||
| 215 | /** @return buffer data of the current PImagePng | ||
| 216 | */ | ||
| 217 | 1 | const png_byte* PImagePng::getData() const{return p_buffer;} | |
| 218 | |||
| 219 | ///Get the buffer data of the current PImagePng | ||
| 220 | /** @return buffer data of the current PImagePng | ||
| 221 | */ | ||
| 222 | 1 | png_byte* PImagePng::getData(){return p_buffer;} | |
| 223 | |||
| 224 | ///Get the number of bytes per pixel | ||
| 225 | /** @return number of bytes per pixel | ||
| 226 | */ | ||
| 227 | 8 | NbColorByte PImagePng::getNbBytePerPixel() const{return p_nbBytePerPixel;} | |
| 228 | |||
| 229 | ///Copy function of PImagePng | ||
| 230 | /** @param other : class to copy | ||
| 231 | */ | ||
| 232 | 2 | void PImagePng::copyPImagePng(const PImagePng & other){ | |
| 233 | 2 | createImage(other.getWidth(), other.getHeight(), other.p_colorType); | |
| 234 | 2 | memcpy(p_buffer, other.p_buffer, sizeof(char)*other.getWidth()*other.getHeight()*p_nbBytePerPixel); | |
| 235 | 2 | } | |
| 236 | |||
| 237 | ///Initialisation function of the class PImagePng | ||
| 238 | 19 | void PImagePng::initialisationPImagePng(){ | |
| 239 | 19 | memset(&p_image, 0, (sizeof p_image)); | |
| 240 | 19 | p_image.version = PNG_IMAGE_VERSION; //We have to set the PNG version for this image | |
| 241 | |||
| 242 | 19 | p_buffer = NULL; | |
| 243 | 19 | p_nbBytePerPixel = 0; | |
| 244 | 19 | } | |
| 245 | |||
| 246 | |||
| 247 | |||
| 248 | |||
| 249 | |||
| 250 |