Mercurial > hg > orthanc
annotate OrthancFramework/Sources/Images/ImageBuffer.cpp @ 4195:db38b2ad4c4a
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| author | Alain Mazy <alain@mazy.be> |
|---|---|
| date | Wed, 16 Sep 2020 11:24:08 +0200 |
| parents | bf7b9edf6b81 |
| children | b30a8de92ad9 |
| rev | line source |
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| 801 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 801 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
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8 * modify it under the terms of the GNU Lesser General Public License |
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9 * as published by the Free Software Foundation, either version 3 of |
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10 * the License, or (at your option) any later version. |
| 801 | 11 * |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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15 * Lesser General Public License for more details. |
| 801 | 16 * |
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17 * You should have received a copy of the GNU Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
| 801 | 20 **/ |
| 21 | |
| 22 | |
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23 #include "../PrecompiledHeaders.h" |
| 801 | 24 #include "ImageBuffer.h" |
| 25 | |
| 863 | 26 #include "../OrthancException.h" |
| 27 | |
| 860 | 28 #include <stdio.h> |
| 863 | 29 #include <stdlib.h> |
| 860 | 30 |
| 801 | 31 namespace Orthanc |
| 32 { | |
| 33 void ImageBuffer::Allocate() | |
| 34 { | |
| 35 if (changed_) | |
| 36 { | |
| 863 | 37 Deallocate(); |
| 38 | |
| 844 | 39 /* |
| 40 if (forceMinimalPitch_) | |
| 41 { | |
| 42 TODO: Align pitch and memory buffer to optimal size for SIMD. | |
| 43 } | |
| 44 */ | |
| 45 | |
| 801 | 46 pitch_ = GetBytesPerPixel() * width_; |
| 863 | 47 size_t size = pitch_ * height_; |
| 801 | 48 |
| 863 | 49 if (size == 0) |
| 801 | 50 { |
| 863 | 51 buffer_ = NULL; |
| 801 | 52 } |
| 53 else | |
| 54 { | |
| 863 | 55 buffer_ = malloc(size); |
| 56 if (buffer_ == NULL) | |
| 57 { | |
| 3348 | 58 throw OrthancException(ErrorCode_NotEnoughMemory, |
| 59 "Failed to allocate an image buffer of size " + boost::lexical_cast<std::string>(width_) + "x" + boost::lexical_cast<std::string>(height_)); | |
| 863 | 60 } |
| 801 | 61 } |
| 62 | |
| 63 changed_ = false; | |
| 64 } | |
| 65 } | |
| 66 | |
| 67 | |
| 863 | 68 void ImageBuffer::Deallocate() |
| 69 { | |
| 70 if (buffer_ != NULL) | |
| 71 { | |
| 72 free(buffer_); | |
| 73 buffer_ = NULL; | |
| 74 changed_ = true; | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 | |
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79 ImageBuffer::ImageBuffer(PixelFormat format, |
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80 unsigned int width, |
| 2107 | 81 unsigned int height, |
| 82 bool forceMinimalPitch) : | |
| 83 forceMinimalPitch_(forceMinimalPitch) | |
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84 { |
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85 Initialize(); |
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86 SetWidth(width); |
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87 SetHeight(height); |
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88 SetFormat(format); |
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89 } |
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90 |
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91 |
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92 void ImageBuffer::Initialize() |
| 801 | 93 { |
| 94 changed_ = false; | |
| 844 | 95 forceMinimalPitch_ = true; |
| 801 | 96 format_ = PixelFormat_Grayscale8; |
| 97 width_ = 0; | |
| 98 height_ = 0; | |
| 99 pitch_ = 0; | |
| 100 buffer_ = NULL; | |
| 101 } | |
| 102 | |
| 103 | |
| 104 void ImageBuffer::SetFormat(PixelFormat format) | |
| 105 { | |
| 863 | 106 if (format != format_) |
| 107 { | |
| 108 changed_ = true; | |
| 109 format_ = format; | |
| 110 } | |
| 801 | 111 } |
| 112 | |
| 113 | |
| 114 void ImageBuffer::SetWidth(unsigned int width) | |
| 115 { | |
| 863 | 116 if (width != width_) |
| 117 { | |
| 118 changed_ = true; | |
| 119 width_ = width; | |
| 120 } | |
| 801 | 121 } |
| 122 | |
| 123 | |
| 124 void ImageBuffer::SetHeight(unsigned int height) | |
| 125 { | |
| 863 | 126 if (height != height_) |
| 127 { | |
| 128 changed_ = true; | |
| 129 height_ = height; | |
| 130 } | |
| 801 | 131 } |
| 132 | |
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133 |
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134 void ImageBuffer::GetReadOnlyAccessor(ImageAccessor& accessor) |
| 801 | 135 { |
| 136 Allocate(); | |
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137 accessor.AssignReadOnly(format_, width_, height_, pitch_, buffer_); |
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138 } |
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139 |
| 801 | 140 |
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141 void ImageBuffer::GetWriteableAccessor(ImageAccessor& accessor) |
| 801 | 142 { |
| 143 Allocate(); | |
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144 accessor.AssignWritable(format_, width_, height_, pitch_, buffer_); |
| 801 | 145 } |
| 844 | 146 |
| 147 | |
| 863 | 148 void ImageBuffer::AcquireOwnership(ImageBuffer& other) |
| 149 { | |
| 150 // Remove the content of the current image | |
| 151 Deallocate(); | |
| 152 | |
| 153 // Force the allocation of the other image (if not already | |
| 154 // allocated) | |
| 155 other.Allocate(); | |
| 156 | |
| 157 // Transfer the content of the other image | |
| 158 changed_ = false; | |
| 159 forceMinimalPitch_ = other.forceMinimalPitch_; | |
| 160 format_ = other.format_; | |
| 161 width_ = other.width_; | |
| 162 height_ = other.height_; | |
| 163 pitch_ = other.pitch_; | |
| 164 buffer_ = other.buffer_; | |
| 165 | |
| 166 // Force the reinitialization of the other image | |
| 167 other.Initialize(); | |
| 844 | 168 } |
| 801 | 169 } |