2 Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file test/image_test.cc
21 * @brief Tests of the Image class.
23 * @see test/make_black_test.cc, test/pixel_formats_test.cc
26 #include <boost/test/unit_test.hpp>
28 #include "lib/image.h"
29 #include "lib/scaler.h"
34 using boost::shared_ptr;
36 BOOST_AUTO_TEST_CASE (aligned_image_test)
38 Image* s = new Image (PIX_FMT_RGB24, dcp::Size (50, 50), true);
39 BOOST_CHECK_EQUAL (s->components(), 1);
40 /* 160 is 150 aligned to the nearest 32 bytes */
41 BOOST_CHECK_EQUAL (s->stride()[0], 160);
42 BOOST_CHECK_EQUAL (s->line_size()[0], 150);
43 BOOST_CHECK (s->data()[0]);
44 BOOST_CHECK (!s->data()[1]);
45 BOOST_CHECK (!s->data()[2]);
46 BOOST_CHECK (!s->data()[3]);
48 /* copy constructor */
49 Image* t = new Image (*s);
50 BOOST_CHECK_EQUAL (t->components(), 1);
51 BOOST_CHECK_EQUAL (t->stride()[0], 160);
52 BOOST_CHECK_EQUAL (t->line_size()[0], 150);
53 BOOST_CHECK (t->data()[0]);
54 BOOST_CHECK (!t->data()[1]);
55 BOOST_CHECK (!t->data()[2]);
56 BOOST_CHECK (!t->data()[3]);
57 BOOST_CHECK (t->data() != s->data());
58 BOOST_CHECK (t->data()[0] != s->data()[0]);
59 BOOST_CHECK (t->line_size() != s->line_size());
60 BOOST_CHECK_EQUAL (t->line_size()[0], s->line_size()[0]);
61 BOOST_CHECK (t->stride() != s->stride());
62 BOOST_CHECK_EQUAL (t->stride()[0], s->stride()[0]);
64 /* assignment operator */
65 Image* u = new Image (PIX_FMT_YUV422P, dcp::Size (150, 150), false);
67 BOOST_CHECK_EQUAL (u->components(), 1);
68 BOOST_CHECK_EQUAL (u->stride()[0], 160);
69 BOOST_CHECK_EQUAL (u->line_size()[0], 150);
70 BOOST_CHECK (u->data()[0]);
71 BOOST_CHECK (!u->data()[1]);
72 BOOST_CHECK (!u->data()[2]);
73 BOOST_CHECK (!u->data()[3]);
74 BOOST_CHECK (u->data() != s->data());
75 BOOST_CHECK (u->data()[0] != s->data()[0]);
76 BOOST_CHECK (u->line_size() != s->line_size());
77 BOOST_CHECK_EQUAL (u->line_size()[0], s->line_size()[0]);
78 BOOST_CHECK (u->stride() != s->stride());
79 BOOST_CHECK_EQUAL (u->stride()[0], s->stride()[0]);
86 BOOST_AUTO_TEST_CASE (compact_image_test)
88 Image* s = new Image (PIX_FMT_RGB24, dcp::Size (50, 50), false);
89 BOOST_CHECK_EQUAL (s->components(), 1);
90 BOOST_CHECK_EQUAL (s->stride()[0], 50 * 3);
91 BOOST_CHECK_EQUAL (s->line_size()[0], 50 * 3);
92 BOOST_CHECK (s->data()[0]);
93 BOOST_CHECK (!s->data()[1]);
94 BOOST_CHECK (!s->data()[2]);
95 BOOST_CHECK (!s->data()[3]);
97 /* copy constructor */
98 Image* t = new Image (*s);
99 BOOST_CHECK_EQUAL (t->components(), 1);
100 BOOST_CHECK_EQUAL (t->stride()[0], 50 * 3);
101 BOOST_CHECK_EQUAL (t->line_size()[0], 50 * 3);
102 BOOST_CHECK (t->data()[0]);
103 BOOST_CHECK (!t->data()[1]);
104 BOOST_CHECK (!t->data()[2]);
105 BOOST_CHECK (!t->data()[3]);
106 BOOST_CHECK (t->data() != s->data());
107 BOOST_CHECK (t->data()[0] != s->data()[0]);
108 BOOST_CHECK (t->line_size() != s->line_size());
109 BOOST_CHECK_EQUAL (t->line_size()[0], s->line_size()[0]);
110 BOOST_CHECK (t->stride() != s->stride());
111 BOOST_CHECK_EQUAL (t->stride()[0], s->stride()[0]);
113 /* assignment operator */
114 Image* u = new Image (PIX_FMT_YUV422P, dcp::Size (150, 150), true);
116 BOOST_CHECK_EQUAL (u->components(), 1);
117 BOOST_CHECK_EQUAL (u->stride()[0], 50 * 3);
118 BOOST_CHECK_EQUAL (u->line_size()[0], 50 * 3);
119 BOOST_CHECK (u->data()[0]);
120 BOOST_CHECK (!u->data()[1]);
121 BOOST_CHECK (!u->data()[2]);
122 BOOST_CHECK (!u->data()[3]);
123 BOOST_CHECK (u->data() != s->data());
124 BOOST_CHECK (u->data()[0] != s->data()[0]);
125 BOOST_CHECK (u->line_size() != s->line_size());
126 BOOST_CHECK_EQUAL (u->line_size()[0], s->line_size()[0]);
127 BOOST_CHECK (u->stride() != s->stride());
128 BOOST_CHECK_EQUAL (u->stride()[0], s->stride()[0]);
135 BOOST_AUTO_TEST_CASE (crop_image_test)
137 /* This was to check out a bug with valgrind, and is probably not very useful */
138 shared_ptr<Image> image (new Image (PIX_FMT_YUV420P, dcp::Size (16, 16), true));
139 image->make_black ();
142 image->crop (crop, false);
145 /* Test cropping of a YUV 4:2:0 image by 1 pixel, which used to fail because
146 the U/V copying was not rounded up to the next sample.
148 BOOST_AUTO_TEST_CASE (crop_image_test2)
150 /* Here's a 1998 x 1080 image which is black */
151 shared_ptr<Image> image (new Image (PIX_FMT_YUV420P, dcp::Size (1998, 1080), true));
152 image->make_black ();
154 /* Crop it by 1 pixel */
157 image = image->crop (crop, true);
159 /* Convert it back to RGB to make comparison to black easier */
160 image = image->scale (image->size(), Scaler::from_id ("bicubic"), PIX_FMT_RGB24, true);
162 /* Check that its still black after the crop */
163 uint8_t* p = image->data()[0];
164 for (int y = 0; y < image->size().height; ++y) {
166 for (int x = 0; x < image->size().width; ++x) {
167 BOOST_CHECK_EQUAL (*q++, 0);
168 BOOST_CHECK_EQUAL (*q++, 0);
169 BOOST_CHECK_EQUAL (*q++, 0);
171 p += image->stride()[0];
176 boost::shared_ptr<Image>
177 read_file (string file)
179 Magick::Image magick_image (file.c_str ());
180 dcp::Size size (magick_image.columns(), magick_image.rows());
182 boost::shared_ptr<Image> image (new Image (PIX_FMT_RGB24, size, true));
184 using namespace MagickCore;
186 uint8_t* p = image->data()[0];
187 for (int y = 0; y < size.height; ++y) {
189 for (int x = 0; x < size.width; ++x) {
190 Magick::Color c = magick_image.pixelColor (x, y);
191 *q++ = c.redQuantum() * 255 / QuantumRange;
192 *q++ = c.greenQuantum() * 255 / QuantumRange;
193 *q++ = c.blueQuantum() * 255 / QuantumRange;
195 p += image->stride()[0];
203 write_file (shared_ptr<Image> image, string file)
205 using namespace MagickCore;
207 Magick::Image magick_image (Magick::Geometry (image->size().width, image->size().height), Magick::Color (0, 0, 0));
208 uint8_t*p = image->data()[0];
209 for (int y = 0; y < image->size().height; ++y) {
211 for (int x = 0; x < image->size().width; ++x) {
212 Magick::Color c (q[0] * QuantumRange / 256, q[1] * QuantumRange / 256, q[2] * QuantumRange / 256);
213 magick_image.pixelColor (x, y, c);
216 p += image->stride()[0];
219 magick_image.write (file.c_str ());
224 crop_scale_window_single (AVPixelFormat in_format, dcp::Size in_size, Crop crop, dcp::Size inter_size, dcp::Size out_size)
226 /* Set up our test image */
227 shared_ptr<Image> test (new Image (in_format, in_size, true));
229 for (int c = 0; c < test->components(); ++c) {
230 uint8_t* p = test->data()[c];
231 for (int y = 0; y < test->lines(c); ++y) {
232 for (int x = 0; x < test->stride()[c]; ++x) {
238 /* Convert using separate methods */
239 boost::shared_ptr<Image> sep = test->crop (crop, true);
240 sep = sep->scale (inter_size, Scaler::from_id ("bicubic"), PIX_FMT_RGB24, true);
241 boost::shared_ptr<Image> sep_container (new Image (PIX_FMT_RGB24, out_size, true));
242 sep_container->make_black ();
243 sep_container->copy (sep, Position<int> ((out_size.width - inter_size.width) / 2, (out_size.height - inter_size.height) / 2));
245 /* Convert using the all-in-one method */
246 shared_ptr<Image> all = test->crop_scale_window (crop, inter_size, out_size, Scaler::from_id ("bicubic"), PIX_FMT_RGB24, true);
249 BOOST_CHECK_EQUAL (sep_container->size().width, all->size().width);
250 BOOST_CHECK_EQUAL (sep_container->size().height, all->size().height);
252 /* Assuming RGB on these */
253 BOOST_CHECK_EQUAL (sep_container->components(), 1);
254 BOOST_CHECK_EQUAL (all->components(), 1);
256 uint8_t* p = sep_container->data()[0];
257 uint8_t* q = all->data()[0];
258 for (int y = 0; y < all->size().height; ++y) {
261 for (int x = 0; x < all->size().width * 3; ++x) {
262 BOOST_CHECK_EQUAL (*pp++, *qq++);
264 p += sep_container->stride()[0];
265 q += all->stride()[0];
269 /** Test Image::crop_scale_window against separate calls to crop/scale/copy */
270 BOOST_AUTO_TEST_CASE (crop_scale_window_test)
272 crop_scale_window_single (AV_PIX_FMT_YUV422P, dcp::Size (640, 480), Crop (), dcp::Size (640, 480), dcp::Size (640, 480));
273 crop_scale_window_single (AV_PIX_FMT_YUV422P, dcp::Size (640, 480), Crop (2, 4, 6, 8), dcp::Size (640, 480), dcp::Size (640, 480));
274 crop_scale_window_single (AV_PIX_FMT_YUV422P, dcp::Size (640, 480), Crop (2, 4, 6, 8), dcp::Size (1920, 1080), dcp::Size (1998, 1080));
275 crop_scale_window_single (AV_PIX_FMT_YUV422P, dcp::Size (640, 480), Crop (1, 4, 6, 8), dcp::Size (1920, 1080), dcp::Size (1998, 1080));
276 crop_scale_window_single (AV_PIX_FMT_YUV420P, dcp::Size (640, 480), Crop (16, 16, 0, 0), dcp::Size (1920, 1080), dcp::Size (1998, 1080));
277 crop_scale_window_single (AV_PIX_FMT_YUV420P, dcp::Size (640, 480), Crop (16, 3, 3, 0), dcp::Size (1920, 1080), dcp::Size (1998, 1080));
278 crop_scale_window_single (AV_PIX_FMT_RGB24, dcp::Size (1000, 800), Crop (0, 0, 0, 0), dcp::Size (1920, 1080), dcp::Size (1998, 1080));
279 crop_scale_window_single (AV_PIX_FMT_RGB24, dcp::Size (1000, 800), Crop (55, 0, 1, 9), dcp::Size (1920, 1080), dcp::Size (1998, 1080));
282 /** Test Image::alpha_blend */
283 BOOST_AUTO_TEST_CASE (alpha_blend_test)
285 int const stride = 48 * 4;
287 shared_ptr<Image> A (new Image (AV_PIX_FMT_RGBA, dcp::Size (48, 48), false));
289 uint8_t* a = A->data()[0];
291 for (int y = 0; y < 48; ++y) {
292 uint8_t* p = a + y * stride;
293 for (int x = 0; x < 16; ++x) {
295 p[(x + 16) * 4 + 1] = 255;
296 p[(x + 32) * 4 + 2] = 255;
300 shared_ptr<Image> B (new Image (AV_PIX_FMT_RGBA, dcp::Size (48, 48), true));
301 B->make_transparent ();
302 uint8_t* b = B->data()[0];
304 for (int y = 32; y < 48; ++y) {
305 uint8_t* p = b + y * stride;
306 for (int x = 0; x < 48; ++x) {
314 A->alpha_blend (B, Position<int> (0, 0));
316 for (int y = 0; y < 32; ++y) {
317 uint8_t* p = a + y * stride;
318 for (int x = 0; x < 16; ++x) {
319 BOOST_CHECK_EQUAL (p[x * 4], 255);
320 BOOST_CHECK_EQUAL (p[(x + 16) * 4 + 1], 255);
321 BOOST_CHECK_EQUAL (p[(x + 32) * 4 + 2], 255);
325 for (int y = 32; y < 48; ++y) {
326 uint8_t* p = a + y * stride;
327 for (int x = 0; x < 48; ++x) {
328 BOOST_CHECK_EQUAL (p[x * 4], 255);
329 BOOST_CHECK_EQUAL (p[x * 4 + 1], 255);
330 BOOST_CHECK_EQUAL (p[x * 4 + 2], 255);
331 BOOST_CHECK_EQUAL (p[x * 4 + 3], 255);
336 /** Test merge (list<PositionImage>) with a single image */
337 BOOST_AUTO_TEST_CASE (merge_test1)
339 int const stride = 48 * 4;
341 shared_ptr<Image> A (new Image (AV_PIX_FMT_RGBA, dcp::Size (48, 48), false));
342 A->make_transparent ();
343 uint8_t* a = A->data()[0];
345 for (int y = 0; y < 48; ++y) {
346 uint8_t* p = a + y * stride;
347 for (int x = 0; x < 16; ++x) {
355 list<PositionImage> all;
356 all.push_back (PositionImage (A, Position<int> (0, 0)));
357 PositionImage merged = merge (all);
359 BOOST_CHECK (merged.position == Position<int> (0, 0));
360 BOOST_CHECK_EQUAL (memcmp (merged.image->data()[0], A->data()[0], stride * 48), 0);
363 /** Test merge (list<PositionImage>) with two images */
364 BOOST_AUTO_TEST_CASE (merge_test2)
366 shared_ptr<Image> A (new Image (AV_PIX_FMT_RGBA, dcp::Size (48, 1), false));
367 A->make_transparent ();
368 uint8_t* a = A->data()[0];
369 for (int x = 0; x < 16; ++x) {
376 shared_ptr<Image> B (new Image (AV_PIX_FMT_RGBA, dcp::Size (48, 1), false));
377 B->make_transparent ();
378 uint8_t* b = B->data()[0];
379 for (int x = 0; x < 16; ++x) {
381 b[(x + 32) * 4 + 2] = 255;
383 b[(x + 32) * 4 + 3] = 255;
386 list<PositionImage> all;
387 all.push_back (PositionImage (A, Position<int> (0, 0)));
388 all.push_back (PositionImage (B, Position<int> (0, 0)));
389 PositionImage merged = merge (all);
391 BOOST_CHECK (merged.position == Position<int> (0, 0));
393 uint8_t* m = merged.image->data()[0];
395 for (int x = 0; x < 16; ++x) {
396 BOOST_CHECK_EQUAL (m[x * 4], 255);
397 BOOST_CHECK_EQUAL (m[x * 4 + 3], 255);
398 BOOST_CHECK_EQUAL (m[(x + 16) * 4 + 3], 0);
399 BOOST_CHECK_EQUAL (m[(x + 32) * 4 + 2], 255);
400 BOOST_CHECK_EQUAL (m[(x + 32) * 4 + 3], 255);