2 // Copyright 2005-2007 Adobe Systems Incorporated
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
9 #pragma warning(disable : 4244) // 'argument': conversion from 'int' to 'unsigned char', possible loss of data
12 #include <boost/gil.hpp>
14 #include <boost/assert.hpp>
15 #include <boost/mp11.hpp>
19 #include <type_traits>
22 using namespace boost::gil;
25 void test_pixel_iterator()
27 boost::function_requires<Point2DConcept<point<int>>>();
29 boost::function_requires<MutablePixelIteratorConcept<bgr8_ptr_t> >();
30 boost::function_requires<MutablePixelIteratorConcept<cmyk8_planar_ptr_t> >();
31 boost::function_requires<PixelIteratorConcept<rgb8c_planar_step_ptr_t> >();
32 boost::function_requires<MutableStepIteratorConcept<rgb8_step_ptr_t> >();
34 boost::function_requires<MutablePixelLocatorConcept<rgb8_step_loc_t> >();
35 boost::function_requires<PixelLocatorConcept<rgb8c_planar_step_loc_t> >();
37 boost::function_requires<MutableStepIteratorConcept<cmyk8_planar_step_ptr_t> >();
38 boost::function_requires<StepIteratorConcept<gray8c_step_ptr_t> >();
40 boost::function_requires<MutablePixelLocatorConcept<memory_based_2d_locator<rgb8_step_ptr_t> > >();
42 using bgr121_ref_t = bit_aligned_pixel_reference
45 boost::mp11::mp_list_c<int,1,2,1>,
49 using bgr121_ptr_t = bit_aligned_pixel_iterator<bgr121_ref_t>;
51 boost::function_requires<MutablePixelIteratorConcept<bgr121_ptr_t> >();
52 boost::function_requires<PixelBasedConcept<bgr121_ptr_t> >();
53 boost::function_requires<MemoryBasedIteratorConcept<bgr121_ptr_t> >();
54 boost::function_requires<HasDynamicXStepTypeConcept<bgr121_ptr_t> >();
56 // TEST dynamic_step_t
57 static_assert(std::is_same<cmyk16_step_ptr_t, dynamic_x_step_type<cmyk16_step_ptr_t>::type>::value, "");
58 static_assert(std::is_same<cmyk16_planar_step_ptr_t, dynamic_x_step_type<cmyk16_planar_ptr_t>::type>::value, "");
60 static_assert(std::is_same<iterator_type<uint8_t,gray_layout_t,false,false,false>::type,gray8c_ptr_t>::value, "");
62 // TEST iterator_is_step
63 static_assert(iterator_is_step<cmyk16_step_ptr_t>::value, "");
64 static_assert(iterator_is_step<cmyk16_planar_step_ptr_t>::value, "");
65 static_assert(!iterator_is_step<cmyk16_planar_ptr_t>::value, "");
67 using ccv_rgb_g_fn = color_convert_deref_fn<rgb8c_ref_t, gray8_pixel_t>;
68 using ccv_g_rgb_fn = color_convert_deref_fn<gray8c_ref_t, rgb8_pixel_t>;
69 gil_function_requires<PixelDereferenceAdaptorConcept<ccv_rgb_g_fn> >();
70 gil_function_requires<PixelDereferenceAdaptorConcept<deref_compose<ccv_rgb_g_fn,ccv_g_rgb_fn> > >();
72 using rgb2gray_ptr = dereference_iterator_adaptor<rgb8_ptr_t, ccv_rgb_g_fn>;
73 static_assert(!iterator_is_step<rgb2gray_ptr>::value, "");
75 using rgb2gray_step_ptr = dynamic_x_step_type<rgb2gray_ptr>::type;
76 static_assert(std::is_same<rgb2gray_step_ptr, dereference_iterator_adaptor<rgb8_step_ptr_t, ccv_rgb_g_fn>>::value, "");
78 make_step_iterator(rgb2gray_ptr(),2);
80 using rgb2gray_step_ptr1 = dereference_iterator_adaptor<rgb8_step_ptr_t, ccv_rgb_g_fn>;
81 static_assert(iterator_is_step<rgb2gray_step_ptr1>::value, "");
82 static_assert(std::is_same<rgb2gray_step_ptr1, dynamic_x_step_type<rgb2gray_step_ptr1>::type>::value, "");
84 using rgb2gray_step_ptr2 = memory_based_step_iterator<dereference_iterator_adaptor<rgb8_ptr_t, ccv_rgb_g_fn>>;
85 static_assert(iterator_is_step<rgb2gray_step_ptr2 >::value, "");
86 static_assert(std::is_same<rgb2gray_step_ptr2, dynamic_x_step_type<rgb2gray_step_ptr2>::type>::value, "");
87 make_step_iterator(rgb2gray_step_ptr2(),2);
89 // bit_aligned iterators test
91 // Mutable reference to a BGR232 pixel
92 using bgr232_ref_t = bit_aligned_pixel_reference
95 boost::mp11::mp_list_c<unsigned, 2, 3, 2>,
100 // A mutable iterator over BGR232 pixels
101 using bgr232_ptr_t = bit_aligned_pixel_iterator<bgr232_ref_t>;
103 // BGR232 pixel value. It is a packed_pixel of size 1 byte. (The last bit is unused)
104 using bgr232_pixel_t = std::iterator_traits<bgr232_ptr_t>::value_type;
105 static_assert(sizeof(bgr232_pixel_t) == 1, "");
107 bgr232_pixel_t red(0,0,3); // = 0RRGGGBB, = 01100000
109 // a buffer of 7 bytes fits exactly 8 BGR232 pixels.
110 unsigned char pix_buffer[7];
111 std::fill(pix_buffer,pix_buffer+7,0);
112 bgr232_ptr_t pix_it(&pix_buffer[0],0); // start at bit 0 of the first pixel
113 for (int i=0; i<8; ++i) {
117 // test cross byte pixel values - meaning when a pixel value is stretched over two bytes
118 using gray3_image_t = bit_aligned_image1_type<3, gray_layout_t>::type;
119 using image_t = gray3_image_t;
121 using view_t = image_t::view_t;
122 using ref_t = view_t::reference;
124 using iterator_t = bit_aligned_pixel_iterator<ref_t>;
126 std::vector< unsigned char > buf( 4 );
127 // bit pattern is: 1011 0110 0110 1101 1101 1011
128 // each byte is read right to left
133 iterator_t it( &buf[0], 0 );
135 ref_t p1 = *it; it++;
136 ref_t p2 = *it; it++;
137 ref_t p3 = *it; it++;
138 ref_t p4 = *it; it++;
139 ref_t p5 = *it; it++;
140 ref_t p6 = *it; it++;
141 ref_t p7 = *it; it++;
142 ref_t p8 = *it; it++;
144 unsigned char v1 = get_color( p1, gray_color_t() );
145 unsigned char v2 = get_color( p2, gray_color_t() );
146 unsigned char v3 = get_color( p3, gray_color_t() );
147 unsigned char v4 = get_color( p4, gray_color_t() );
148 unsigned char v5 = get_color( p5, gray_color_t() );
149 unsigned char v6 = get_color( p6, gray_color_t() );
150 unsigned char v7 = get_color( p7, gray_color_t() );
151 unsigned char v8 = get_color( p8, gray_color_t() );
153 // all values should be 110b ( 6 );
154 BOOST_ASSERT(v1 == 6);
155 BOOST_ASSERT(v2 == 6);
156 BOOST_ASSERT(v3 == 6);
157 BOOST_ASSERT(v4 == 6);
158 BOOST_ASSERT(v5 == 6);
159 BOOST_ASSERT(v6 == 6);
160 BOOST_ASSERT(v7 == 6);
161 BOOST_ASSERT(v8 == 6);
164 // TODO: Make better tests. Use some code from below.
167 template <typename Pixel>
168 void invert_pixel1(Pixel& pix) {
172 template <typename T> inline void ignore_unused_variable_warning(const T&){}
174 void test_pixel_iterator() {
175 rgb8_pixel_t rgb8(1,2,3);
178 rgb8_ptr_t ptr1=&rgb8;
179 memunit_advance(ptr1, 3);
180 const rgb8_ptr_t ptr2=memunit_advanced(ptr1,10);
182 memunit_distance(ptr1,ptr2);
183 const rgb8_pixel_t& ref=memunit_advanced_ref(ptr1,10); ignore_unused_variable_warning(ref);
185 rgb8_planar_ptr_t planarPtr1(&rgb8);
186 rgb8_planar_ptr_t planarPtr2(&rgb8);
187 memunit_advance(planarPtr1,10);
188 memunit_distance(planarPtr1,planarPtr2);
189 rgb8_planar_ptr_t planarPtr3=memunit_advanced(planarPtr1,10);
191 // planarPtr2=&rgba8;
193 planar_pixel_reference<uint8_t&,rgb_t> pxl=*(planarPtr1+5);
194 rgb8_pixel_t pv2=pxl;
195 rgb8_pixel_t pv3=*(planarPtr1+5);
196 rgb8_pixel_t pv=planarPtr1[5];
198 assert(*(planarPtr1+5)==planarPtr1[5]);
200 rgb8_planar_ref_t planarRef=memunit_advanced_ref(planarPtr1,10);
202 rgb8_step_ptr_t stepIt(&rgb8,5);
204 rgb8_step_ptr_t stepIt2=stepIt+10;
207 rgb8_step_ptr_t stepIt3(&rgb8,5);
209 rgb8_pixel_t& ref1=stepIt3[5];
210 // bool v=std::is_pod<iterator_traits<memory_based_step_iterator<rgb8_ptr_t> >::value_type>::value;
211 // v=std::is_pod<rgb8_pixel_t>::value;
212 // v=std::is_pod<int>::value;
214 rgb8_step_ptr_t rgb8StepIt(ptr1, 10);
215 rgb8_step_ptr_t rgb8StepIt2=rgb8StepIt;
216 rgb8StepIt=rgb8StepIt2;
218 rgb8_ref_t reff=*rgb8StepIt; ignore_unused_variable_warning(reff);
220 std::ptrdiff_t dst=rgb8StepIt2-rgb8StepIt; ignore_unused_variable_warning(dst);
222 rgb8_pixel_t val1=ref1;
223 rgb8_ptr_t ptr=&ref1;
225 invert_pixel1(*planarPtr1);
226 // invert_pixel1(*ptr);
227 rgb8c_planar_ptr_t r8cpp;
228 // invert_pixel1(*r8cpp);
230 rgb8_pixel_t& val21=stepIt3[5];
231 rgb8_pixel_t val22=val21;
233 rgb8_pixel_t val2=stepIt3[5];
234 rgb8_ptr_t ptr11=&(stepIt3[5]); ignore_unused_variable_warning(ptr11);
235 rgb8_ptr_t ptr3=&*(stepIt3+5); ignore_unused_variable_warning(ptr3);
237 rgb8_step_ptr_t stepIt4(ptr,5);
240 rgb8_step_ptr_t stepIt5;
241 if (stepIt4==stepIt5) {
242 int st=0;ignore_unused_variable_warning(st);
245 iterator_from_2d<rgb8_loc_t> pix_img_it(rgb8_loc_t(ptr, 20), 5);
248 rgb8_pixel_t& refr=*pix_img_it;
249 refr=rgb8_pixel_t(1,2,3);
250 *pix_img_it=rgb8_pixel_t(1,2,3);
251 pix_img_it[3]=rgb8_pixel_t(1,2,3);
252 *(pix_img_it+3)=rgb8_pixel_t(1,2,3);
254 iterator_from_2d<rgb8c_loc_t> pix_img_it_c(rgb8c_loc_t(rgb8c_ptr_t(ptr),20), 5);
257 // *pix_img_it_c=rgb8_pixel_t(1,2,3); // error: assigning though const iterator
258 using dif_t = iterator_from_2d<rgb8_loc_t>::difference_type;
260 std::ptrdiff_t tdt=dt; ignore_unused_variable_warning(tdt);
262 // memory_based_step_iterator<rgb8_pixel_t> stepIt3Err=stepIt+10; // error: non-const from const iterator
264 memory_based_2d_locator<rgb8_step_ptr_t> xy_locator(ptr,27);
267 // memory_based_step_iterator<rgb8_pixel_t>& yit=xy_locator.y();
269 xy_locator+=point<std::ptrdiff_t>(3,4);
270 // *xy_locator=(xy_locator(-1,0)+xy_locator(0,1))/2;
271 rgb8_pixel_t& rf=*xy_locator; ignore_unused_variable_warning(rf);
273 make_step_iterator(rgb8_ptr_t(),3);
274 make_step_iterator(rgb8_planar_ptr_t(),3);
275 make_step_iterator(rgb8_planar_step_ptr_t(),3);
277 // Test operator-> on planar ptrs
279 rgb8c_planar_ptr_t cp(&rgb8);
280 rgb8_planar_ptr_t p(&rgb8);
281 // get_color(p,red_t()) = get_color(cp,green_t()); // does not compile - cannot assign a non-const pointer to a const pointer. Otherwise you will be able to modify the value through it.
285 // dimensions to explore
287 // values, references, pointers
288 // color spaces (rgb,cmyk,gray)
289 // channel ordering (bgr vs rgb)
290 // planar vs interleaved
293 // using RGB8ConstPtr = iterator_traits<rgb8_ptr_t>::pointer const;
294 using RGB8ConstPtr = rgb8_ptr_t const;
295 using RGB8ConstPlanarPtr = rgb8_planar_ptr_t const;
296 // using RGB8ConstPlanarPtr = iterator_traits<rgb8_planar_ptr_t>::pointer const;
298 // constructing from values, references and other pointers
299 RGB8ConstPtr rgb8_const_ptr=NULL; ignore_unused_variable_warning(rgb8_const_ptr);
300 rgb8_ptr_t rgb8ptr=&rgb8;
302 rgb8=bgr8_pixel_t(30,20,10);
303 rgb8_planar_ptr_t rgb8_pptr=&rgb8;
307 RGB8ConstPlanarPtr rgb8_const_planar_ptr=&rgb8;
309 rgb8c_planar_ptr_t r8c=&rgb8;
314 // rgb8_const_planar_ptr=&rgb16p; // error: incompatible bit depth
316 // iterator_traits<CMYK8>::pointer cmyk8_ptr_t=&rgb8; // error: incompatible pointer type
318 RGB8ConstPtr rgb8_const_ptr_err=rgb8ptr; // const pointer from non-regular pointer
319 ignore_unused_variable_warning(rgb8_const_ptr_err);
320 // dereferencing pointers to obtain references
321 rgb8_ref_t rgb8ref_2=*rgb8ptr; ignore_unused_variable_warning(rgb8ref_2);
322 assert(rgb8ref_2==rgb8);
323 // RGB8Ref rgb8ref_2_err=*rgb8_const_planar_ptr; // error: non-const reference from const pointer
325 rgb8_planar_ref_t rgb8planarref_3=*rgb8_pptr; // planar reference from planar pointer
326 assert(rgb8planarref_3==rgb8);
327 // RGB8Ref rgb8ref_3=*rgb8_planar_ptr_t; // error: non-planar reference from planar pointer
329 const rgb8_pixel_t crgb8=rgb8;
333 memunit_advance(rgb8_pptr,3);
334 memunit_advance(rgb8_pptr,-3);
342 test_pixel_iterator();
346 catch (std::exception const& e)
348 std::cerr << e.what() << std::endl;