1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
|
//
// Copyright 2013 Christian Henning
//
// Distributed under the Boost Software License, Version 1.0
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
//
#include <boost/gil.hpp>
#include <boost/gil/extension/io/bmp.hpp>
#include <boost/core/lightweight_test.hpp>
#include "paths.hpp"
#include "scanline_read_test.hpp"
#include <string>
namespace gil = boost::gil;
namespace mp11 = boost::mp11;
template <typename Image>
void write(Image& img, std::string const& file_name)
{
write_view(bmp_out + file_name, gil::view(img), gil::bmp_tag());
}
void test_read_header()
{
using backend_t = gil::get_reader_backend<std::string const, gil::bmp_tag>::type;
backend_t backend = gil::read_image_info(bmp_filename, gil::bmp_tag());
BOOST_TEST_EQ(backend._info._offset , 54u);
BOOST_TEST_EQ(backend._info._header_size , 40u);
BOOST_TEST_EQ(backend._info._width , 1000);
BOOST_TEST_EQ(backend._info._height , 600);
BOOST_TEST_EQ(backend._info._bits_per_pixel , 24);
BOOST_TEST_EQ(backend._info._compression , 0u);
BOOST_TEST_EQ(backend._info._image_size , 1800000u);
BOOST_TEST_EQ(backend._info._horizontal_resolution, 0);
BOOST_TEST_EQ(backend._info._vertical_resolution , 0);
BOOST_TEST_EQ(backend._info._num_colors , 0u);
BOOST_TEST_EQ(backend._info._num_important_colors , 0u);
BOOST_TEST_EQ(backend._info._valid , true);
}
#ifdef BOOST_GIL_IO_USE_BMP_TEST_SUITE_IMAGES
void test_read_reference_images_test()
{
// comments are taken from http://entropymine.com/jason/bmpsuite/reference/reference.html
// g01bw.bmp - black and white palette (#000000,#FFFFFF)
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g01bw.bmp", img, gil::bmp_tag());
}
// g01wb.bmp - white and black palette (#FFFFFF,#000000).
// Should look the same as g01bw, not inverted.
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g01wb.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g01wb.bmp");
}
// g01bg.bmp - blue and green palette (#4040FF,#40FF40)
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g01bg.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g01bg.bmp");
}
// g01p1.bmp - 1-color (blue) palette (#4040FF)
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g01p1.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g01p1.bmp");
}
// g04.bmp - basic 4bpp (16 color) image
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g04.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g04.bmp");
}
// g04rle.bmp - RLE compressed.
{
gil::rgb8_image_t img;
gil::read_image(bmp_in + "g04rle.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g04rle.bmp");
}
// g04p4.bmp - 4-color grayscale palette
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g04p4.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g04p4.bmp");
}
// g08.bmp - basic 8bpp (256 color) image
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08.bmp");
}
// g08p256.bmp - biClrUsed=256, biClrImportant=0 [=256]
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08p256.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08p256.bmp");
}
// g08pi256.bmp - biClrUsed=256, biClrImportant=256
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08pi256.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08pi256.bmp");
}
// g08pi64.bmp - biClrUsed=256, biClrImportant=64. It's barely possible that some
// sophisticated viewers may display this image in grayscale, if there are a
// limited number of colors available.
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08pi64.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08pi64.bmp");
}
// g08rle.bmp - RLE compressed.
{
gil::rgb8_image_t img;
gil::read_image(bmp_in + "g08rle.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08rle.bmp");
}
// g08os2.bmp - OS/2-style bitmap. This is an obsolete variety of BMP
// that is still encountered sometimes. It has 3-byte palette
// entries (instead of 4), and 16-bit width/height fields (instead of 32).
{
gil::rgb8_image_t img;
gil::read_image(bmp_in + "g08os2.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08os2.bmp");
}
// g08res22.bmp - resolution 7874x7874 pixels/meter (200x200 dpi)
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08res22.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08res22.bmp");
}
// g08res11.bmp - resolution 3937x3937 pixels/meter (100x100 dpi)
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08res11.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08res11.bmp");
}
// g08res21.bmp resolution 7874x3937 pixels/meter (200x100 dpi).
// Some programs (e.g. Imaging for Windows) may display this image
// stretched vertically, which is the optimal thing to do if the
// program is primarily a viewer, rather than an editor.
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08res21.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08res21.bmp");
}
// g08s0.bmp - bits size not given (set to 0). This is legal for uncompressed bitmaps.
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08s0.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08s0.bmp");
}
// g08offs.bmp - bfOffBits in header not set to the usual value.
// There are 100 extra unused bytes between palette and bits.
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08offs.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08offs.bmp");
}
// g08w126.bmp - size 126x63 (right and bottom slightly clipped)
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08w126.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 126u);
BOOST_TEST_EQ(view(img).height(), 63u);
write(img, "g08w126.bmp");
}
// g08w125.bmp - size 125x62
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08w125.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 125u);
BOOST_TEST_EQ(view(img).height(), 62u);
write(img, "g08w125.bmp");
}
// g08w124.bmp - size 124x61
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08w124.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 124u);
BOOST_TEST_EQ(view(img).height(), 61u);
write(img, "g08w124.bmp");
}
// g08p64.bmp - 64-color grayscale palette
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g08p64.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g08p64.bmp");
}
// g16def555.bmp - 15-bit color (1 bit wasted), biCompression=BI_RGB (no bitfields, defaults to 5-5-5)
{
gil::rgb8_image_t img;
gil::read_image(bmp_in + "g16def555.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g16def555.bmp");
}
// g16bf555.bmp - 15-bit color, biCompression=BI_BITFIELDS (bitfields indicate 5-5-5)
{
gil::rgb8_image_t img;
gil::read_image(bmp_in + "g16bf555.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g16bf555.bmp");
}
// g16bf565.bmp - 16-bit color, biCompression=BI_BITFIELDS (bitfields indicate 5-6-5)
{
gil::rgb8_image_t img;
gil::read_image(bmp_in + "g16bf565.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g16bf565.bmp");
}
// g24.bmp - 24-bit color (BGR)
{
gil::rgb8_image_t img;
gil::read_image(bmp_in + "g24.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g24.bmp");
}
// g32def.bmp - 24-bit color (8 bits wasted), biCompression=BI_RGB (no bitfields, defaults to BGRx)
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g32def.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g32def.bmp");
}
// g32bf.bmp - 24-bit color (8 bits wasted), biCompression=BI_BITFIELDS (bitfields indicate BGRx)
{
gil::rgba8_image_t img;
gil::read_image(bmp_in + "g32bf.bmp", img, gil::bmp_tag());
BOOST_TEST_EQ(view(img).width(), 127u);
BOOST_TEST_EQ(view(img).height(), 64u);
write(img, "g32bf.bmp");
}
}
void test_read_reference_images_image_iterator()
{
// comments are taken from http://entropymine.com/jason/bmpsuite/reference/reference.html
// g01bw.bmp - black and white palette (#000000,#FFFFFF)
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g01bw.bmp").c_str());
// g01wb.bmp - white and black palette (#FFFFFF,#000000).
// Should look the same as g01bw, not inverted.
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g01wb.bmp").c_str());
// g01bg.bmp - blue and green palette (#4040FF,#40FF40)
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g01bg.bmp").c_str());
// g01p1.bmp - 1-color (blue) palette (#4040FF)
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g01p1.bmp").c_str());
// g04.bmp - basic 4bpp (16 color) image
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g04.bmp").c_str());
// not supported
// g04rle.bmp - RLE compressed.
//test_scanline_reader<gil::bgra8_image_t, gil::bmp_tag>(std::string(bmp_in + "g01bg.bmp").c_str());
// g04p4.bmp - 4-color grayscale palette
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g04p4.bmp").c_str());
// g08.bmp - basic 8bpp (256 color) image
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08.bmp").c_str());
// g08p256.bmp - biClrUsed=256, biClrImportant=0 [=256]
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08p256.bmp").c_str());
// g08pi256.bmp - biClrUsed=256, biClrImportant=256
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08pi256.bmp").c_str());
// g08pi64.bmp - biClrUsed=256, biClrImportant=64. It's barely possible that some
// sophisticated viewers may display this image in grayscale, if there are a
// limited number of colors available.
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08pi64.bmp").c_str());
// not supported
// g08rle.bmp - RLE compressed.
// g08os2.bmp - OS/2-style bitmap. This is an obsolete variety of BMP
// that is still encountered sometimes. It has 3-byte palette
// entries (instead of 4), and 16-bit width/height fields (instead of 32).
test_scanline_reader<gil::rgb8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08os2.bmp").c_str());
// g08res22.bmp - resolution 7874x7874 pixels/meter (200x200 dpi)
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08res22.bmp").c_str());
// g08res11.bmp - resolution 3937x3937 pixels/meter (100x100 dpi)
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08res11.bmp").c_str());
// g08res21.bmp resolution 7874x3937 pixels/meter (200x100 dpi).
// Some programs (e.g. Imaging for Windows) may display this image
// stretched vertically, which is the optimal thing to do if the
// program is primarily a viewer, rather than an editor.
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08res21.bmp").c_str());
// g08s0.bmp - bits size not given (set to 0). This is legal for uncompressed bitmaps.
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08s0.bmp").c_str());
// g08offs.bmp - bfOffBits in header not set to the usual value.
// There are 100 extra unused bytes between palette and bits.
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08offs.bmp").c_str());
// g08w126.bmp - size 126x63 (right and bottom slightly clipped)
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08w126.bmp").c_str());
// g08w125.bmp - size 125x62
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08w125.bmp").c_str());
// g08w124.bmp - size 124x61
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08w124.bmp").c_str());
// g08p64.bmp - 64-color grayscale palette
test_scanline_reader<gil::rgba8_image_t, gil::bmp_tag>(std::string(bmp_in + "g08p64.bmp").c_str());
// g16def555.bmp - 15-bit color (1 bit wasted), biCompression=BI_RGB (no bitfields, defaults to 5-5-5)
test_scanline_reader<gil::rgb8_image_t, gil::bmp_tag>(std::string(bmp_in + "g16def555.bmp").c_str());
// g16bf555.bmp - 15-bit color, biCompression=BI_BITFIELDS (bitfields indicate 5-5-5)
test_scanline_reader<gil::rgb8_image_t, gil::bmp_tag>(std::string(bmp_in + "g16bf555.bmp").c_str());
// g16bf565.bmp - 16-bit color, biCompression=BI_BITFIELDS (bitfields indicate 5-6-5)
test_scanline_reader<gil::rgb8_image_t, gil::bmp_tag>(std::string(bmp_in + "g16bf565.bmp").c_str());
// g24.bmp - 24-bit color (BGR)
test_scanline_reader<gil::bgr8_image_t, gil::bmp_tag>(std::string(bmp_in + "g24.bmp").c_str());
// g32def.bmp - 24-bit color (8 bits wasted), biCompression=BI_RGB (no bitfields, defaults to BGRx)
test_scanline_reader<gil::bgra8_image_t, gil::bmp_tag>(std::string(bmp_in + "g32def.bmp").c_str());
// g32bf.bmp - 24-bit color (8 bits wasted), biCompression=BI_BITFIELDS (bitfields indicate BGRx)
test_scanline_reader<gil::bgra8_image_t, gil::bmp_tag>(std::string(bmp_in + "g32bf.bmp").c_str());
}
void test_partial_image()
{
std::string const filename(bmp_in + "g24.bmp");
gil::rgb8_image_t img;
gil::read_image(filename, img, gil::image_read_settings<gil::bmp_tag>(
gil::point_t(0, 0), gil::point_t(50, 50)));
write_view(bmp_out + "rgb_partial.bmp", gil::view(img), gil::bmp_tag());
}
#endif // BOOST_GIL_IO_USE_BMP_TEST_SUITE_IMAGES
int main(int argc, char *argv[])
{
try
{
test_read_header();
#ifdef BOOST_GIL_IO_USE_BMP_TEST_SUITE_IMAGES
test_read_reference_images_test();
test_read_reference_images_image_iterator();
test_partial_image();
#endif
}
catch (std::exception const& e)
{
BOOST_ERROR(e.what());
}
return boost::report_errors();
}
|
