libs/gil/test/extension/io/png_test.cpp

   1 //
   2 // Copyright 2013 Christian Henning
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 #define BOOST_TEST_MODULE png_test
   9 //#define BOOST_GIL_IO_PNG_FLOATING_POINT_SUPPORTED
  10 //#define BOOST_GIL_IO_PNG_FIXED_POINT_SUPPORTED
  11
  12 #include <boost/gil.hpp>
  13 #include <boost/gil/extension/io/png.hpp>
  14
  15 #include <boost/mp11.hpp>
  16 #include <boost/test/unit_test.hpp>
  17
  18 #include <fstream>
  19
  20 #include "mandel_view.hpp"
  21 #include "paths.hpp"
  22 #include "subimage_test.hpp"
  23
  24 using namespace std;
  25 using namespace boost;
  26 using namespace gil;
  27
  28 using tag_t = png_tag;
  29
  30 BOOST_AUTO_TEST_SUITE( gil_io_png_tests )
  31
  32 #ifdef BOOST_GIL_IO_TEST_ALLOW_READING_IMAGES
  33
  34 BOOST_AUTO_TEST_CASE( read_image_info_using_string )
  35 {
  36     {
  37         using backend_t = get_reader_backend<std::string const, tag_t>::type;
  38
  39         backend_t backend = read_image_info( png_filename
  40                                            , tag_t()
  41                                            );
  42
  43         BOOST_CHECK_EQUAL( backend._info._width , 1000u );
  44         BOOST_CHECK_EQUAL( backend._info._height,  600u );
  45     }
  46
  47     {
  48         ifstream in( png_filename.c_str(), ios::binary );
  49
  50         using backend_t = get_reader_backend<ifstream, tag_t>::type;
  51
  52         backend_t backend = read_image_info( in
  53                                            , tag_t()
  54                                            );
  55
  56         BOOST_CHECK_EQUAL( backend._info._width , 1000u );
  57         BOOST_CHECK_EQUAL( backend._info._height,  600u );
  58     }
  59
  60     {
  61         FILE* file = fopen( png_filename.c_str(), "rb" );
  62
  63         using backend_t = get_reader_backend<FILE*, tag_t>::type;
  64
  65         backend_t backend = read_image_info( file
  66                                            , tag_t()
  67                                            );
  68
  69         BOOST_CHECK_EQUAL( backend._info._width , 1000u );
  70         BOOST_CHECK_EQUAL( backend._info._height,  600u );
  71     }
  72 }
  73
  74 BOOST_AUTO_TEST_CASE( read_image_test )
  75 {
  76     {
  77         rgba8_image_t img;
  78         read_image( png_filename, img, tag_t() );
  79
  80         BOOST_CHECK_EQUAL( img.width() , 1000u );
  81         BOOST_CHECK_EQUAL( img.height(),  600u );
  82     }
  83
  84     {
  85         ifstream in( png_filename.c_str(), ios::binary );
  86
  87         rgba8_image_t img;
  88         read_image( in, img, tag_t() );
  89
  90         BOOST_CHECK_EQUAL( img.width() , 1000u );
  91         BOOST_CHECK_EQUAL( img.height(),  600u );
  92     }
  93
  94     {
  95         FILE* file = fopen( png_filename.c_str(), "rb" );
  96
  97         rgba8_image_t img;
  98         read_image( file, img, tag_t() );
  99
 100         BOOST_CHECK_EQUAL( img.width() , 1000u );
 101         BOOST_CHECK_EQUAL( img.height(),  600u );
 102     }
 103 }
 104
 105 BOOST_AUTO_TEST_CASE( read_and_convert_image_test )
 106 {
 107     {
 108         rgb8_image_t img;
 109         read_and_convert_image( png_filename, img, tag_t() );
 110
 111         BOOST_CHECK_EQUAL( img.width() , 1000u );
 112         BOOST_CHECK_EQUAL( img.height(),  600u );
 113     }
 114
 115     {
 116         rgba8_image_t img;
 117         read_and_convert_image( png_filename, img, tag_t() );
 118
 119         BOOST_CHECK_EQUAL( img.width() , 1000u );
 120         BOOST_CHECK_EQUAL( img.height(),  600u );
 121     }
 122
 123     {
 124         ifstream in( png_filename.c_str(), ios::binary );
 125
 126         rgb8_image_t img;
 127         read_and_convert_image( in, img, tag_t() );
 128
 129         BOOST_CHECK_EQUAL( img.width() , 1000u );
 130         BOOST_CHECK_EQUAL( img.height(),  600u );
 131     }
 132
 133     {
 134         FILE* file = fopen( png_filename.c_str(), "rb" );
 135
 136         rgb8_image_t img;
 137         read_and_convert_image( file, img, tag_t() );
 138
 139         BOOST_CHECK_EQUAL( img.width() , 1000u );
 140         BOOST_CHECK_EQUAL( img.height(),  600u );
 141     }
 142 }
 143
 144 BOOST_AUTO_TEST_CASE( read_view_test )
 145 {
 146     {
 147         rgba8_image_t img( 1000, 600 );
 148         read_view( png_filename, view( img ), tag_t() );
 149     }
 150
 151     {
 152         ifstream in( png_filename.c_str(), ios::binary );
 153
 154         rgba8_image_t img( 1000, 600 );
 155         read_view( in, view( img ), tag_t() );
 156     }
 157
 158     {
 159         FILE* file = fopen( png_filename.c_str(), "rb" );
 160
 161         rgba8_image_t img( 1000, 600 );
 162         read_view( file, view( img ), tag_t() );
 163     }
 164 }
 165
 166 BOOST_AUTO_TEST_CASE( read_and_convert_view_test )
 167 {
 168     {
 169         rgb8_image_t img( 1000, 600 );
 170         read_and_convert_view( png_filename, view( img ), tag_t() );
 171     }
 172
 173     {
 174         ifstream in( png_filename.c_str(), ios::binary );
 175
 176         rgb8_image_t img( 1000, 600 );
 177         read_and_convert_view( in, view( img ), tag_t() );
 178     }
 179
 180     {
 181         FILE* file = fopen( png_filename.c_str(), "rb" );
 182
 183         rgb8_image_t img( 1000, 600 );
 184
 185         read_and_convert_view( file
 186                              , view( img )
 187                              , tag_t()
 188                              );
 189     }
 190 }
 191
 192 #endif // BOOST_GIL_IO_TEST_ALLOW_READING_IMAGES
 193
 194 #ifdef BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
 195 BOOST_AUTO_TEST_CASE( write_view_test )
 196 {
 197     {
 198         string filename( png_out + "write_test_string.png" );
 199
 200         write_view( filename
 201                   , create_mandel_view( 320, 240
 202                                       , rgb8_pixel_t( 0,   0, 255 )
 203                                       , rgb8_pixel_t( 0, 255,   0 )
 204                                       )
 205                   , tag_t()
 206                   );
 207     }
 208
 209     {
 210         string filename( png_out + "write_test_string_bgr.png" );
 211
 212         write_view( filename
 213                   , create_mandel_view( 320, 240
 214                                       , bgr8_pixel_t( 255, 0, 0 )
 215                                       , bgr8_pixel_t( 0, 255, 0 )
 216                                       )
 217                   , tag_t()
 218                   );
 219     }
 220
 221     {
 222         string filename( png_out + "write_test_ofstream.png" );
 223
 224         ofstream out( filename.c_str(), ios::out | ios::binary );
 225
 226         write_view( out
 227                   , create_mandel_view( 320, 240
 228                                       , rgb8_pixel_t( 0,   0, 255 )
 229                                       , rgb8_pixel_t( 0, 255,   0 )
 230                                       )
 231                   , tag_t()
 232                   );
 233     }
 234
 235     {
 236         string filename( png_out + "write_test_file.png" );
 237
 238         FILE* file = fopen( filename.c_str(), "wb" );
 239
 240         write_view( file
 241                   , create_mandel_view( 320, 240
 242                                       , rgb8_pixel_t( 0,   0, 255 )
 243                                       , rgb8_pixel_t( 0, 255,   0 )
 244                                       )
 245                   , tag_t()
 246                   );
 247     }
 248
 249     {
 250         string filename( png_out + "write_test_info.png" );
 251         FILE* file = fopen( filename.c_str(), "wb" );
 252
 253         image_write_info< png_tag > info;
 254
 255         write_view( file
 256                   , create_mandel_view( 320, 240
 257                                       , rgb8_pixel_t( 0,   0, 255 )
 258                                       , rgb8_pixel_t( 0, 255,   0 )
 259                                       )
 260                   , info
 261                   );
 262     }
 263 }
 264 #endif // BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
 265
 266 #ifdef BOOST_GIL_IO_TEST_ALLOW_READING_IMAGES
 267 BOOST_AUTO_TEST_CASE( stream_test )
 268 {
 269     // 1. Read an image.
 270     ifstream in( png_filename.c_str(), ios::binary );
 271
 272     rgba8_image_t img;
 273     read_image( in, img, tag_t() );
 274
 275     // 2. Write image to in-memory buffer.
 276     stringstream out_buffer( ios_base::in | ios_base::out | ios_base::binary );
 277     write_view( out_buffer, view( img ), tag_t() );
 278
 279     // 3. Copy in-memory buffer to another.
 280     stringstream in_buffer( ios_base::in | ios_base::out | ios_base::binary );
 281     in_buffer << out_buffer.rdbuf();
 282
 283     // 4. Read in-memory buffer to gil image
 284     rgba8_image_t dst;
 285     read_image( in_buffer, dst, tag_t() );
 286
 287     // 5. Write out image.
 288     string filename( png_out + "stream_test.png" );
 289     ofstream out( filename.c_str(), ios_base::binary );
 290
 291 #ifdef BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
 292     write_view( out, view( dst ), tag_t() );
 293 #endif // BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
 294 }
 295
 296 BOOST_AUTO_TEST_CASE( stream_test_2 )
 297 {
 298     filebuf in_buf;
 299     if( !in_buf.open( png_filename.c_str(), ios::in | ios::binary ) )
 300     {
 301         BOOST_CHECK( false );
 302     }
 303
 304     istream in( &in_buf );
 305
 306     rgba8_image_t img;
 307     read_image( in, img, tag_t() );
 308 }
 309
 310 BOOST_AUTO_TEST_CASE( subimage_test )
 311 {
 312     run_subimage_test< rgba8_image_t, tag_t >( png_filename
 313                                              , point_t(  0,  0 )
 314                                              , point_t( 50, 50 )
 315                                              );
 316
 317
 318     run_subimage_test< rgba8_image_t, tag_t >( png_filename
 319                                              , point_t( 135, 95 )
 320                                              , point_t(  50, 50 )
 321                                              );
 322 }
 323
 324 BOOST_AUTO_TEST_CASE( dynamic_image_test )
 325 {
 326     using my_img_types = mp11::mp_list
 327         <
 328             gray8_image_t,
 329             gray16_image_t,
 330             rgb8_image_t,
 331             rgba8_image_t
 332         >;
 333
 334     any_image< my_img_types > runtime_image;
 335
 336     read_image( png_filename.c_str()
 337               , runtime_image
 338               , tag_t()
 339               );
 340
 341 #ifdef BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
 342     write_view( png_out + "dynamic_image_test.png"
 343               , view( runtime_image )
 344               , tag_t()
 345               );
 346 #endif // BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
 347 }
 348
 349 #endif // BOOST_GIL_IO_TEST_ALLOW_READING_IMAGES
 350
 351 BOOST_AUTO_TEST_SUITE_END()