Mercurial > hg > orthanc
annotate Core/ImageFormats/ImageBuffer.cpp @ 1604:1f5d6a2f9638
JpegReader
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 01 Sep 2015 14:57:13 +0200 |
| parents | 6e7e5ed91c2d |
| children | adc6a5704cdb |
| rev | line source |
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| 801 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
| 801 | 5 * |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
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33 #include "../PrecompiledHeaders.h" |
| 801 | 34 #include "ImageBuffer.h" |
| 35 | |
| 863 | 36 #include "../OrthancException.h" |
| 37 | |
| 860 | 38 #include <stdio.h> |
| 863 | 39 #include <stdlib.h> |
| 860 | 40 |
| 801 | 41 namespace Orthanc |
| 42 { | |
| 43 void ImageBuffer::Allocate() | |
| 44 { | |
| 45 if (changed_) | |
| 46 { | |
| 863 | 47 Deallocate(); |
| 48 | |
| 844 | 49 /* |
| 50 if (forceMinimalPitch_) | |
| 51 { | |
| 52 TODO: Align pitch and memory buffer to optimal size for SIMD. | |
| 53 } | |
| 54 */ | |
| 55 | |
| 801 | 56 pitch_ = GetBytesPerPixel() * width_; |
| 863 | 57 size_t size = pitch_ * height_; |
| 801 | 58 |
| 863 | 59 if (size == 0) |
| 801 | 60 { |
| 863 | 61 buffer_ = NULL; |
| 801 | 62 } |
| 63 else | |
| 64 { | |
| 863 | 65 buffer_ = malloc(size); |
| 66 if (buffer_ == NULL) | |
| 67 { | |
| 68 throw OrthancException(ErrorCode_NotEnoughMemory); | |
| 69 } | |
| 801 | 70 } |
| 71 | |
| 72 changed_ = false; | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 | |
| 863 | 77 void ImageBuffer::Deallocate() |
| 78 { | |
| 79 if (buffer_ != NULL) | |
| 80 { | |
| 81 free(buffer_); | |
| 82 buffer_ = NULL; | |
| 83 changed_ = true; | |
| 84 } | |
| 85 } | |
| 86 | |
| 87 | |
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88 ImageBuffer::ImageBuffer(unsigned int width, |
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89 unsigned int height, |
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90 PixelFormat format) |
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91 { |
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92 Initialize(); |
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93 SetWidth(width); |
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94 SetHeight(height); |
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95 SetFormat(format); |
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96 } |
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97 |
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98 |
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99 void ImageBuffer::Initialize() |
| 801 | 100 { |
| 101 changed_ = false; | |
| 844 | 102 forceMinimalPitch_ = true; |
| 801 | 103 format_ = PixelFormat_Grayscale8; |
| 104 width_ = 0; | |
| 105 height_ = 0; | |
| 106 pitch_ = 0; | |
| 107 buffer_ = NULL; | |
| 108 } | |
| 109 | |
| 110 | |
| 111 void ImageBuffer::SetFormat(PixelFormat format) | |
| 112 { | |
| 863 | 113 if (format != format_) |
| 114 { | |
| 115 changed_ = true; | |
| 116 format_ = format; | |
| 117 } | |
| 801 | 118 } |
| 119 | |
| 120 | |
| 121 void ImageBuffer::SetWidth(unsigned int width) | |
| 122 { | |
| 863 | 123 if (width != width_) |
| 124 { | |
| 125 changed_ = true; | |
| 126 width_ = width; | |
| 127 } | |
| 801 | 128 } |
| 129 | |
| 130 | |
| 131 void ImageBuffer::SetHeight(unsigned int height) | |
| 132 { | |
| 863 | 133 if (height != height_) |
| 134 { | |
| 135 changed_ = true; | |
| 136 height_ = height; | |
| 137 } | |
| 801 | 138 } |
| 139 | |
| 140 | |
| 141 ImageAccessor ImageBuffer::GetAccessor() | |
| 142 { | |
| 143 Allocate(); | |
| 144 | |
| 145 ImageAccessor accessor; | |
| 146 accessor.AssignWritable(format_, width_, height_, pitch_, buffer_); | |
| 147 return accessor; | |
| 148 } | |
| 149 | |
| 150 | |
| 151 ImageAccessor ImageBuffer::GetConstAccessor() | |
| 152 { | |
| 153 Allocate(); | |
| 154 | |
| 155 ImageAccessor accessor; | |
| 156 accessor.AssignReadOnly(format_, width_, height_, pitch_, buffer_); | |
| 157 return accessor; | |
| 158 } | |
| 844 | 159 |
| 160 | |
| 161 void ImageBuffer::SetMinimalPitchForced(bool force) | |
| 162 { | |
| 863 | 163 if (force != forceMinimalPitch_) |
| 164 { | |
| 165 changed_ = true; | |
| 166 forceMinimalPitch_ = force; | |
| 167 } | |
| 168 } | |
| 169 | |
| 170 | |
| 171 void ImageBuffer::AcquireOwnership(ImageBuffer& other) | |
| 172 { | |
| 173 // Remove the content of the current image | |
| 174 Deallocate(); | |
| 175 | |
| 176 // Force the allocation of the other image (if not already | |
| 177 // allocated) | |
| 178 other.Allocate(); | |
| 179 | |
| 180 // Transfer the content of the other image | |
| 181 changed_ = false; | |
| 182 forceMinimalPitch_ = other.forceMinimalPitch_; | |
| 183 format_ = other.format_; | |
| 184 width_ = other.width_; | |
| 185 height_ = other.height_; | |
| 186 pitch_ = other.pitch_; | |
| 187 buffer_ = other.buffer_; | |
| 188 | |
| 189 // Force the reinitialization of the other image | |
| 190 other.Initialize(); | |
| 844 | 191 } |
| 801 | 192 } |