]>
Commit | Line | Data |
---|---|---|
92f5a8d4 TL |
1 | // |
2 | // Copyright 2005-2007 Adobe Systems Incorporated | |
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 | #ifndef BOOST_GIL_IMAGE_HPP | |
9 | #define BOOST_GIL_IMAGE_HPP | |
10 | ||
11 | #include <boost/gil/algorithm.hpp> | |
12 | #include <boost/gil/image_view.hpp> | |
13 | #include <boost/gil/metafunctions.hpp> | |
14 | #include <boost/gil/detail/mp11.hpp> | |
15 | ||
16 | #include <boost/assert.hpp> | |
f67539c2 | 17 | #include <boost/core/exchange.hpp> |
7c673cae FG |
18 | |
19 | #include <cstddef> | |
20 | #include <memory> | |
92f5a8d4 TL |
21 | #include <utility> |
22 | #include <type_traits> | |
7c673cae FG |
23 | |
24 | namespace boost { namespace gil { | |
25 | ||
7c673cae FG |
26 | //////////////////////////////////////////////////////////////////////////////////////// |
27 | /// \ingroup ImageModel PixelBasedModel | |
28 | /// \brief container interface over image view. Models ImageConcept, PixelBasedConcept | |
92f5a8d4 | 29 | /// |
7c673cae FG |
30 | /// A 2D container whose elements are pixels. It is templated over the pixel type, a boolean |
31 | /// indicating whether it should be planar, and an optional allocator. | |
32 | /// | |
92f5a8d4 | 33 | /// Note that its element type does not have to be a pixel. \p image can be instantiated with any Regular element, |
7c673cae FG |
34 | /// in which case it models the weaker RandomAccess2DImageConcept and does not model PixelBasedConcept |
35 | /// | |
92f5a8d4 TL |
36 | /// When recreating an image of the same or smaller size the memory will be reused if possible. |
37 | /// | |
7c673cae FG |
38 | //////////////////////////////////////////////////////////////////////////////////////// |
39 | ||
92f5a8d4 | 40 | template< typename Pixel, bool IsPlanar = false, typename Alloc=std::allocator<unsigned char> > |
f67539c2 TL |
41 | class image |
42 | { | |
7c673cae | 43 | public: |
92f5a8d4 TL |
44 | #if defined(BOOST_NO_CXX11_ALLOCATOR) |
45 | using allocator_type = typename Alloc::template rebind<unsigned char>::other; | |
46 | #else | |
47 | using allocator_type = typename std::allocator_traits<Alloc>::template rebind_alloc<unsigned char>; | |
48 | #endif | |
49 | using view_t = typename view_type_from_pixel<Pixel, IsPlanar>::type; | |
50 | using const_view_t = typename view_t::const_t; | |
51 | using point_t = typename view_t::point_t; | |
52 | using coord_t = typename view_t::coord_t; | |
53 | using value_type = typename view_t::value_type; | |
54 | using x_coord_t = coord_t; | |
55 | using y_coord_t = coord_t; | |
7c673cae FG |
56 | |
57 | const point_t& dimensions() const { return _view.dimensions(); } | |
58 | x_coord_t width() const { return _view.width(); } | |
59 | y_coord_t height() const { return _view.height(); } | |
60 | ||
61 | explicit image(std::size_t alignment=0, | |
92f5a8d4 TL |
62 | const Alloc alloc_in = Alloc()) : |
63 | _memory(nullptr), _align_in_bytes(alignment), _alloc(alloc_in), _allocated_bytes( 0 ) {} | |
7c673cae FG |
64 | |
65 | // Create with dimensions and optional initial value and alignment | |
66 | image(const point_t& dimensions, | |
67 | std::size_t alignment=0, | |
92f5a8d4 | 68 | const Alloc alloc_in = Alloc()) : _memory(nullptr), _align_in_bytes(alignment), _alloc(alloc_in) |
f67539c2 TL |
69 | , _allocated_bytes( 0 ) |
70 | { | |
7c673cae FG |
71 | allocate_and_default_construct(dimensions); |
72 | } | |
92f5a8d4 | 73 | |
7c673cae FG |
74 | image(x_coord_t width, y_coord_t height, |
75 | std::size_t alignment=0, | |
92f5a8d4 | 76 | const Alloc alloc_in = Alloc()) : _memory(nullptr), _align_in_bytes(alignment), _alloc(alloc_in) |
f67539c2 TL |
77 | , _allocated_bytes( 0 ) |
78 | { | |
7c673cae FG |
79 | allocate_and_default_construct(point_t(width,height)); |
80 | } | |
92f5a8d4 TL |
81 | |
82 | image(const point_t& dimensions, | |
7c673cae | 83 | const Pixel& p_in, |
f67539c2 | 84 | std::size_t alignment = 0, |
92f5a8d4 | 85 | const Alloc alloc_in = Alloc()) : _memory(nullptr), _align_in_bytes(alignment), _alloc(alloc_in) |
f67539c2 TL |
86 | , _allocated_bytes( 0 ) |
87 | { | |
7c673cae FG |
88 | allocate_and_fill(dimensions, p_in); |
89 | } | |
f67539c2 | 90 | |
7c673cae FG |
91 | image(x_coord_t width, y_coord_t height, |
92 | const Pixel& p_in, | |
92f5a8d4 TL |
93 | std::size_t alignment = 0, |
94 | const Alloc alloc_in = Alloc()) : _memory(nullptr), _align_in_bytes(alignment), _alloc(alloc_in) | |
f67539c2 TL |
95 | , _allocated_bytes ( 0 ) |
96 | { | |
7c673cae FG |
97 | allocate_and_fill(point_t(width,height),p_in); |
98 | } | |
99 | ||
92f5a8d4 | 100 | image(const image& img) : _memory(nullptr), _align_in_bytes(img._align_in_bytes), _alloc(img._alloc) |
f67539c2 TL |
101 | , _allocated_bytes( img._allocated_bytes ) |
102 | { | |
7c673cae FG |
103 | allocate_and_copy(img.dimensions(),img._view); |
104 | } | |
105 | ||
106 | template <typename P2, bool IP2, typename Alloc2> | |
92f5a8d4 | 107 | image(const image<P2,IP2,Alloc2>& img) : _memory(nullptr), _align_in_bytes(img._align_in_bytes), _alloc(img._alloc) |
f67539c2 TL |
108 | , _allocated_bytes( img._allocated_bytes ) |
109 | { | |
7c673cae FG |
110 | allocate_and_copy(img.dimensions(),img._view); |
111 | } | |
92f5a8d4 | 112 | |
f67539c2 TL |
113 | // TODO Optimization: use noexcept (requires _view to be nothrow copy constructible) |
114 | image(image&& img) : | |
115 | _view(img._view), | |
116 | _memory(img._memory), | |
117 | _align_in_bytes(img._align_in_bytes), | |
118 | _alloc(std::move(img._alloc)), | |
119 | _allocated_bytes(img._allocated_bytes) | |
120 | { | |
121 | img._view = view_t(); | |
122 | img._memory = nullptr; | |
123 | img._align_in_bytes = 0; | |
124 | img._allocated_bytes = 0; | |
125 | } | |
126 | ||
127 | image& operator=(const image& img) | |
128 | { | |
7c673cae FG |
129 | if (dimensions() == img.dimensions()) |
130 | copy_pixels(img._view,_view); | |
f67539c2 TL |
131 | else |
132 | { | |
7c673cae FG |
133 | image tmp(img); |
134 | swap(tmp); | |
135 | } | |
136 | return *this; | |
137 | } | |
138 | ||
139 | template <typename Img> | |
f67539c2 TL |
140 | image& operator=(const Img& img) |
141 | { | |
7c673cae FG |
142 | if (dimensions() == img.dimensions()) |
143 | copy_pixels(img._view,_view); | |
f67539c2 TL |
144 | else |
145 | { | |
7c673cae FG |
146 | image tmp(img); |
147 | swap(tmp); | |
148 | } | |
149 | return *this; | |
150 | } | |
151 | ||
f67539c2 TL |
152 | private: |
153 | using propagate_allocators = std::true_type; | |
154 | using no_propagate_allocators = std::false_type; | |
155 | ||
156 | template <class Alloc2> | |
157 | using choose_pocma = typename std::conditional< | |
158 | // TODO: Use std::allocator_traits<Allocator>::is_always_equal if available | |
159 | std::is_empty<Alloc2>::value, | |
160 | std::true_type, | |
161 | typename std::allocator_traits<Alloc2>::propagate_on_container_move_assignment::type | |
162 | >::type; | |
163 | ||
164 | static void exchange_memory(image& lhs, image& rhs) | |
165 | { | |
166 | lhs._memory = boost::exchange(rhs._memory, nullptr); | |
167 | lhs._align_in_bytes = boost::exchange(rhs._align_in_bytes, 0); | |
168 | lhs._allocated_bytes = boost::exchange(rhs._allocated_bytes, 0); | |
169 | lhs._view = boost::exchange(rhs._view, image::view_t{}); | |
170 | }; | |
171 | ||
172 | void move_assign(image& img, propagate_allocators) noexcept { | |
173 | // non-sticky allocator, can adopt the memory, fast | |
174 | destruct_pixels(_view); | |
175 | this->deallocate(); | |
176 | this->_alloc = img._alloc; | |
177 | exchange_memory(*this, img); | |
178 | } | |
179 | ||
180 | void move_assign(image& img, no_propagate_allocators) { | |
181 | if (_alloc == img._alloc) { | |
182 | // allocator stuck to the rhs, but it's equivalent of ours, we can still adopt the memory | |
183 | destruct_pixels(_view); | |
184 | this->deallocate(); | |
185 | exchange_memory(*this, img); | |
186 | } else { | |
187 | // cannot propagate the allocator and cannot adopt the memory | |
188 | if (img._memory) | |
189 | { | |
190 | allocate_and_copy(img.dimensions(), img._view); | |
191 | destruct_pixels(img._view); | |
192 | img.deallocate(); | |
193 | img._view = image::view_t{}; | |
194 | } | |
195 | else | |
196 | { | |
197 | destruct_pixels(this->_view); | |
198 | this->deallocate(); | |
199 | this->_view = view_t{}; | |
200 | } | |
201 | } | |
202 | } | |
203 | ||
204 | public: | |
205 | // TODO: Use noexcept(noexcept(move_assign(img, choose_pocma<allocator_type>{}))) | |
206 | // But https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52869 prevents it (fixed in GCC > 9) | |
207 | image& operator=(image&& img) { | |
208 | if (this != std::addressof(img)) | |
209 | // Use rebinded alloc to choose pocma | |
210 | move_assign(img, choose_pocma<allocator_type>{}); | |
211 | ||
212 | return *this; | |
213 | } | |
214 | ||
215 | ~image() | |
216 | { | |
7c673cae | 217 | destruct_pixels(_view); |
92f5a8d4 | 218 | deallocate(); |
7c673cae FG |
219 | } |
220 | ||
221 | Alloc& allocator() { return _alloc; } | |
222 | Alloc const& allocator() const { return _alloc; } | |
223 | ||
f67539c2 TL |
224 | void swap(image& img) // required by MutableContainerConcept |
225 | { | |
7c673cae | 226 | using std::swap; |
92f5a8d4 TL |
227 | swap(_align_in_bytes, img._align_in_bytes); |
228 | swap(_memory, img._memory); | |
229 | swap(_view, img._view); | |
230 | swap(_alloc, img._alloc); | |
231 | swap(_allocated_bytes, img._allocated_bytes ); | |
232 | } | |
233 | ||
234 | ///////////////////// | |
235 | // recreate | |
236 | ///////////////////// | |
237 | ||
238 | // without Allocator | |
239 | void recreate(const point_t& dims, std::size_t alignment = 0) | |
240 | { | |
241 | if (dims == _view.dimensions() && _align_in_bytes == alignment) | |
242 | return; | |
243 | ||
244 | _align_in_bytes = alignment; | |
245 | ||
246 | if (_allocated_bytes >= total_allocated_size_in_bytes(dims)) | |
247 | { | |
248 | destruct_pixels(_view); | |
249 | create_view(dims, std::integral_constant<bool, IsPlanar>()); | |
250 | default_construct_pixels(_view); | |
251 | } | |
252 | else | |
253 | { | |
254 | image tmp(dims, alignment); | |
255 | swap(tmp); | |
256 | } | |
257 | } | |
258 | ||
259 | void recreate(x_coord_t width, y_coord_t height, std::size_t alignment = 0) | |
260 | { | |
261 | recreate(point_t(width, height), alignment); | |
262 | } | |
263 | ||
264 | void recreate(const point_t& dims, const Pixel& p_in, std::size_t alignment = 0) | |
265 | { | |
266 | if (dims == _view.dimensions() && _align_in_bytes == alignment) | |
267 | return; | |
268 | ||
269 | _align_in_bytes = alignment; | |
270 | ||
271 | if (_allocated_bytes >= total_allocated_size_in_bytes(dims)) | |
272 | { | |
273 | destruct_pixels(_view); | |
274 | create_view(dims, typename std::integral_constant<bool, IsPlanar>()); | |
275 | uninitialized_fill_pixels(_view, p_in); | |
276 | } | |
277 | else | |
278 | { | |
279 | image tmp(dims, p_in, alignment); | |
280 | swap(tmp); | |
281 | } | |
282 | } | |
283 | ||
284 | void recreate( x_coord_t width, y_coord_t height, const Pixel& p_in, std::size_t alignment = 0 ) | |
285 | { | |
286 | recreate( point_t( width, height ), p_in, alignment ); | |
287 | } | |
288 | ||
289 | // with Allocator | |
290 | void recreate(const point_t& dims, std::size_t alignment, const Alloc alloc_in) | |
291 | { | |
292 | if (dims == _view.dimensions() && _align_in_bytes == alignment && alloc_in == _alloc) | |
293 | return; | |
294 | ||
295 | _align_in_bytes = alignment; | |
296 | ||
297 | if (_allocated_bytes >= total_allocated_size_in_bytes(dims)) | |
298 | { | |
299 | destruct_pixels(_view); | |
300 | create_view(dims, std::integral_constant<bool, IsPlanar>()); | |
301 | default_construct_pixels(_view); | |
302 | } | |
303 | else | |
304 | { | |
7c673cae FG |
305 | image tmp(dims, alignment, alloc_in); |
306 | swap(tmp); | |
307 | } | |
308 | } | |
92f5a8d4 TL |
309 | |
310 | void recreate(x_coord_t width, y_coord_t height, std::size_t alignment, const Alloc alloc_in) | |
311 | { | |
312 | recreate(point_t(width, height), alignment, alloc_in); | |
7c673cae | 313 | } |
92f5a8d4 TL |
314 | |
315 | void recreate(const point_t& dims, const Pixel& p_in, std::size_t alignment, const Alloc alloc_in) | |
316 | { | |
317 | if (dims == _view.dimensions() && _align_in_bytes == alignment && alloc_in == _alloc) | |
318 | return; | |
319 | ||
320 | _align_in_bytes = alignment; | |
321 | ||
322 | if (_allocated_bytes >= total_allocated_size_in_bytes(dims)) | |
323 | { | |
324 | destruct_pixels(_view); | |
325 | create_view(dims, std::integral_constant<bool, IsPlanar>()); | |
326 | uninitialized_fill_pixels(_view, p_in); | |
327 | } | |
328 | else | |
329 | { | |
7c673cae FG |
330 | image tmp(dims, p_in, alignment, alloc_in); |
331 | swap(tmp); | |
332 | } | |
333 | } | |
92f5a8d4 TL |
334 | |
335 | void recreate(x_coord_t width, y_coord_t height, const Pixel& p_in, std::size_t alignment, const Alloc alloc_in ) | |
336 | { | |
337 | recreate(point_t(width, height), p_in, alignment, alloc_in); | |
7c673cae FG |
338 | } |
339 | ||
340 | view_t _view; // contains pointer to the pixels, the image size and ways to navigate pixels | |
20effc67 TL |
341 | |
342 | // for construction from other type | |
343 | template <typename P2, bool IP2, typename Alloc2> friend class image; | |
7c673cae FG |
344 | private: |
345 | unsigned char* _memory; | |
346 | std::size_t _align_in_bytes; | |
347 | allocator_type _alloc; | |
348 | ||
92f5a8d4 TL |
349 | std::size_t _allocated_bytes; |
350 | ||
351 | void allocate_and_default_construct(point_t const& dimensions) | |
352 | { | |
353 | try | |
354 | { | |
355 | allocate_(dimensions, std::integral_constant<bool, IsPlanar>()); | |
7c673cae | 356 | default_construct_pixels(_view); |
92f5a8d4 TL |
357 | } |
358 | catch (...) { deallocate(); throw; } | |
7c673cae FG |
359 | } |
360 | ||
92f5a8d4 TL |
361 | void allocate_and_fill(const point_t& dimensions, Pixel const& p_in) |
362 | { | |
363 | try | |
364 | { | |
365 | allocate_(dimensions, std::integral_constant<bool, IsPlanar>()); | |
7c673cae | 366 | uninitialized_fill_pixels(_view, p_in); |
92f5a8d4 TL |
367 | } |
368 | catch(...) { deallocate(); throw; } | |
7c673cae FG |
369 | } |
370 | ||
371 | template <typename View> | |
92f5a8d4 TL |
372 | void allocate_and_copy(const point_t& dimensions, View const& v) |
373 | { | |
374 | try | |
375 | { | |
376 | allocate_(dimensions, std::integral_constant<bool, IsPlanar>()); | |
377 | uninitialized_copy_pixels(v, _view); | |
378 | } | |
379 | catch(...) { deallocate(); throw; } | |
7c673cae FG |
380 | } |
381 | ||
92f5a8d4 TL |
382 | void deallocate() |
383 | { | |
384 | if (_memory && _allocated_bytes > 0) | |
385 | _alloc.deallocate(_memory, _allocated_bytes); | |
7c673cae FG |
386 | } |
387 | ||
92f5a8d4 TL |
388 | std::size_t is_planar_impl( |
389 | std::size_t const size_in_units, | |
390 | std::size_t const channels_in_image, | |
391 | std::true_type) const | |
392 | { | |
393 | return size_in_units * channels_in_image; | |
394 | } | |
7c673cae | 395 | |
92f5a8d4 TL |
396 | std::size_t is_planar_impl( |
397 | std::size_t const size_in_units, | |
398 | std::size_t const, | |
399 | std::false_type) const | |
400 | { | |
401 | return size_in_units; | |
402 | } | |
7c673cae | 403 | |
92f5a8d4 TL |
404 | std::size_t total_allocated_size_in_bytes(point_t const& dimensions) const |
405 | { | |
406 | using x_iterator = typename view_t::x_iterator; | |
7c673cae | 407 | |
92f5a8d4 TL |
408 | // when value_type is a non-pixel, like int or float, num_channels< ... > doesn't work. |
409 | constexpr std::size_t _channels_in_image = | |
410 | std::conditional | |
411 | < | |
412 | is_pixel<value_type>::value, | |
413 | num_channels<view_t>, | |
414 | std::integral_constant<std::size_t, 1> | |
415 | >::type::value; | |
416 | ||
417 | std::size_t size_in_units = is_planar_impl( | |
418 | get_row_size_in_memunits(dimensions.x) * dimensions.y, | |
419 | _channels_in_image, | |
420 | std::integral_constant<bool, IsPlanar>()); | |
7c673cae FG |
421 | |
422 | // return the size rounded up to the nearest byte | |
92f5a8d4 TL |
423 | return ( size_in_units + byte_to_memunit< x_iterator >::value - 1 ) |
424 | / byte_to_memunit<x_iterator>::value | |
7c673cae FG |
425 | + ( _align_in_bytes > 0 ? _align_in_bytes - 1 : 0 ); // add extra padding in case we need to align the first image pixel |
426 | } | |
427 | ||
428 | std::size_t get_row_size_in_memunits(x_coord_t width) const { // number of units per row | |
429 | std::size_t size_in_memunits = width*memunit_step(typename view_t::x_iterator()); | |
430 | if (_align_in_bytes>0) { | |
431 | std::size_t alignment_in_memunits=_align_in_bytes*byte_to_memunit<typename view_t::x_iterator>::value; | |
432 | return align(size_in_memunits, alignment_in_memunits); | |
433 | } | |
434 | return size_in_memunits; | |
435 | } | |
92f5a8d4 TL |
436 | |
437 | void allocate_(point_t const& dimensions, std::false_type) | |
438 | { | |
439 | // if it throws and _memory!=0 the client must deallocate _memory | |
440 | _allocated_bytes = total_allocated_size_in_bytes(dimensions); | |
441 | _memory=_alloc.allocate( _allocated_bytes ); | |
442 | ||
7c673cae | 443 | unsigned char* tmp=(_align_in_bytes>0) ? (unsigned char*)align((std::size_t)_memory,_align_in_bytes) : _memory; |
92f5a8d4 TL |
444 | _view=view_t(dimensions,typename view_t::locator(typename view_t::x_iterator(tmp), get_row_size_in_memunits(dimensions.x))); |
445 | ||
446 | BOOST_ASSERT(_view.width() == dimensions.x); | |
447 | BOOST_ASSERT(_view.height() == dimensions.y); | |
7c673cae FG |
448 | } |
449 | ||
92f5a8d4 TL |
450 | void allocate_(point_t const& dimensions, std::true_type) |
451 | { | |
452 | // if it throws and _memory!=0 the client must deallocate _memory | |
7c673cae FG |
453 | std::size_t row_size=get_row_size_in_memunits(dimensions.x); |
454 | std::size_t plane_size=row_size*dimensions.y; | |
92f5a8d4 TL |
455 | |
456 | _allocated_bytes = total_allocated_size_in_bytes( dimensions ); | |
457 | ||
458 | _memory = _alloc.allocate( _allocated_bytes ); | |
459 | ||
7c673cae | 460 | unsigned char* tmp=(_align_in_bytes>0) ? (unsigned char*)align((std::size_t)_memory,_align_in_bytes) : _memory; |
92f5a8d4 | 461 | typename view_t::x_iterator first; |
f67539c2 TL |
462 | for (std::size_t i = 0; i < num_channels<view_t>::value; ++i) |
463 | { | |
464 | dynamic_at_c(first, i) = (typename channel_type<view_t>::type*)tmp; | |
465 | memunit_advance(dynamic_at_c(first, i), static_cast<std::ptrdiff_t>(plane_size * i)); | |
7c673cae FG |
466 | } |
467 | _view=view_t(dimensions, typename view_t::locator(first, row_size)); | |
92f5a8d4 TL |
468 | |
469 | BOOST_ASSERT(_view.width() == dimensions.x); | |
470 | BOOST_ASSERT(_view.height() == dimensions.y); | |
471 | } | |
472 | ||
473 | void create_view(point_t const& dims, std::true_type) // is planar | |
474 | { | |
475 | std::size_t row_size=get_row_size_in_memunits(dims.x); | |
476 | std::size_t plane_size=row_size*dims.y; | |
477 | ||
478 | unsigned char* tmp = ( _align_in_bytes > 0 ) ? (unsigned char*) align( (std::size_t) _memory | |
479 | ,_align_in_bytes | |
480 | ) | |
481 | : _memory; | |
482 | typename view_t::x_iterator first; | |
483 | ||
f67539c2 | 484 | for (std::size_t i = 0; i < num_channels<view_t>::value; ++i) |
92f5a8d4 | 485 | { |
f67539c2 TL |
486 | dynamic_at_c(first, i) = (typename channel_type<view_t>::type*)tmp; |
487 | memunit_advance(dynamic_at_c(first, i), static_cast<std::ptrdiff_t>(plane_size * i)); | |
92f5a8d4 TL |
488 | } |
489 | ||
490 | _view = view_t(dims, typename view_t::locator(first, row_size)); | |
491 | ||
492 | BOOST_ASSERT(_view.width() == dims.x); | |
493 | BOOST_ASSERT(_view.height() == dims.y); | |
494 | } | |
495 | ||
496 | void create_view(point_t const& dims, std::false_type) // is planar | |
497 | { | |
498 | unsigned char* tmp = ( _align_in_bytes > 0 ) ? ( unsigned char* ) align( (std::size_t) _memory | |
499 | , _align_in_bytes | |
500 | ) | |
501 | : _memory; | |
502 | ||
503 | _view = view_t( dims | |
504 | , typename view_t::locator( typename view_t::x_iterator( tmp ) | |
505 | , get_row_size_in_memunits( dims.x ) | |
506 | ) | |
507 | ); | |
508 | ||
509 | BOOST_ASSERT(_view.width() == dims.x); | |
510 | BOOST_ASSERT(_view.height() == dims.y); | |
7c673cae FG |
511 | } |
512 | }; | |
513 | ||
514 | template <typename Pixel, bool IsPlanar, typename Alloc> | |
f67539c2 TL |
515 | void swap(image<Pixel, IsPlanar, Alloc>& im1,image<Pixel, IsPlanar, Alloc>& im2) |
516 | { | |
92f5a8d4 | 517 | im1.swap(im2); |
7c673cae FG |
518 | } |
519 | ||
520 | template <typename Pixel1, bool IsPlanar1, typename Alloc1, typename Pixel2, bool IsPlanar2, typename Alloc2> | |
f67539c2 TL |
521 | bool operator==(const image<Pixel1,IsPlanar1,Alloc1>& im1,const image<Pixel2,IsPlanar2,Alloc2>& im2) |
522 | { | |
7c673cae FG |
523 | if ((void*)(&im1)==(void*)(&im2)) return true; |
524 | if (const_view(im1).dimensions()!=const_view(im2).dimensions()) return false; | |
525 | return equal_pixels(const_view(im1),const_view(im2)); | |
526 | } | |
527 | template <typename Pixel1, bool IsPlanar1, typename Alloc1, typename Pixel2, bool IsPlanar2, typename Alloc2> | |
528 | bool operator!=(const image<Pixel1,IsPlanar1,Alloc1>& im1,const image<Pixel2,IsPlanar2,Alloc2>& im2) {return !(im1==im2);} | |
529 | ||
530 | ///@{ | |
531 | /// \name view, const_view | |
532 | /// \brief Get an image view from an image | |
533 | ||
534 | /// \ingroup ImageModel | |
535 | ||
536 | /// \brief Returns the non-constant-pixel view of an image | |
92f5a8d4 | 537 | template <typename Pixel, bool IsPlanar, typename Alloc> inline |
7c673cae FG |
538 | const typename image<Pixel,IsPlanar,Alloc>::view_t& view(image<Pixel,IsPlanar,Alloc>& img) { return img._view; } |
539 | ||
540 | /// \brief Returns the constant-pixel view of an image | |
92f5a8d4 | 541 | template <typename Pixel, bool IsPlanar, typename Alloc> inline |
f67539c2 TL |
542 | const typename image<Pixel,IsPlanar,Alloc>::const_view_t const_view(const image<Pixel,IsPlanar,Alloc>& img) |
543 | { | |
92f5a8d4 | 544 | return static_cast<const typename image<Pixel,IsPlanar,Alloc>::const_view_t>(img._view); |
7c673cae FG |
545 | } |
546 | ///@} | |
547 | ||
548 | ///////////////////////////// | |
549 | // PixelBasedConcept | |
550 | ///////////////////////////// | |
551 | ||
552 | template <typename Pixel, bool IsPlanar, typename Alloc> | |
92f5a8d4 | 553 | struct channel_type<image<Pixel, IsPlanar, Alloc>> : channel_type<Pixel> {}; |
7c673cae FG |
554 | |
555 | template <typename Pixel, bool IsPlanar, typename Alloc> | |
92f5a8d4 | 556 | struct color_space_type<image<Pixel, IsPlanar, Alloc>> : color_space_type<Pixel> {}; |
7c673cae FG |
557 | |
558 | template <typename Pixel, bool IsPlanar, typename Alloc> | |
92f5a8d4 | 559 | struct channel_mapping_type<image<Pixel, IsPlanar, Alloc>> : channel_mapping_type<Pixel> {}; |
7c673cae FG |
560 | |
561 | template <typename Pixel, bool IsPlanar, typename Alloc> | |
92f5a8d4 | 562 | struct is_planar<image<Pixel, IsPlanar, Alloc>> : std::integral_constant<bool, IsPlanar> {}; |
7c673cae | 563 | |
92f5a8d4 | 564 | }} // namespace boost::gil |
7c673cae FG |
565 | |
566 | #endif |