Mercurial > hg > orthanc-stone
annotate Framework/Applications/Sdl/SdlBuffering.cpp @ 44:027418bd1517
todo
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 19 Apr 2017 10:27:48 +0200 |
parents | 7207a407bcd8 |
children | 28956ed68280 |
rev | line source |
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0 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
40
7207a407bcd8
shared copyright with osimis
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
16
diff
changeset
|
5 * Copyright (C) 2017 Osimis, Belgium |
0 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU General Public License as | |
9 * published by the Free Software Foundation, either version 3 of the | |
10 * License, or (at your option) any later version. | |
11 * | |
12 * In addition, as a special exception, the copyright holders of this | |
13 * program give permission to link the code of its release with the | |
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
15 * that use the same license as the "OpenSSL" library), and distribute | |
16 * the linked executables. You must obey the GNU General Public License | |
17 * in all respects for all of the code used other than "OpenSSL". If you | |
18 * modify file(s) with this exception, you may extend this exception to | |
19 * your version of the file(s), but you are not obligated to do so. If | |
20 * you do not wish to do so, delete this exception statement from your | |
21 * version. If you delete this exception statement from all source files | |
22 * in the program, then also delete it here. | |
23 * | |
24 * This program is distributed in the hope that it will be useful, but | |
25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
27 * General Public License for more details. | |
28 * | |
29 * You should have received a copy of the GNU General Public License | |
30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
31 **/ | |
32 | |
33 | |
34 #include "SdlBuffering.h" | |
35 | |
36 #if ORTHANC_ENABLE_SDL == 1 | |
37 | |
16 | 38 #include "../../../Resources/Orthanc/Core/Logging.h" |
39 #include "../../../Resources/Orthanc/Core/OrthancException.h" | |
0 | 40 |
41 namespace OrthancStone | |
42 { | |
43 SdlBuffering::SdlBuffering() : | |
44 sdlSurface_(NULL), | |
45 pendingFrame_(false) | |
46 { | |
47 } | |
48 | |
49 | |
50 SdlBuffering::~SdlBuffering() | |
51 { | |
52 if (sdlSurface_) | |
53 { | |
54 SDL_FreeSurface(sdlSurface_); | |
55 } | |
56 } | |
57 | |
58 | |
59 void SdlBuffering::SetSize(unsigned int width, | |
60 unsigned int height, | |
61 IViewport& viewport) | |
62 { | |
63 boost::mutex::scoped_lock lock(mutex_); | |
64 | |
65 viewport.SetSize(width, height); | |
66 | |
67 if (offscreenSurface_.get() == NULL || | |
68 offscreenSurface_->GetWidth() != width || | |
69 offscreenSurface_->GetHeight() != height) | |
70 { | |
71 offscreenSurface_.reset(new CairoSurface(width, height)); | |
72 } | |
73 | |
74 if (onscreenSurface_.get() == NULL || | |
75 onscreenSurface_->GetWidth() != width || | |
76 onscreenSurface_->GetHeight() != height) | |
77 { | |
78 onscreenSurface_.reset(new CairoSurface(width, height)); | |
79 | |
80 // TODO Big endian? | |
81 static const uint32_t rmask = 0x00ff0000; | |
82 static const uint32_t gmask = 0x0000ff00; | |
83 static const uint32_t bmask = 0x000000ff; | |
84 | |
85 if (sdlSurface_) | |
86 { | |
87 SDL_FreeSurface(sdlSurface_); | |
88 } | |
89 | |
90 sdlSurface_ = SDL_CreateRGBSurfaceFrom(onscreenSurface_->GetBuffer(), width, height, 32, | |
91 onscreenSurface_->GetPitch(), rmask, gmask, bmask, 0); | |
92 if (!sdlSurface_) | |
93 { | |
94 LOG(ERROR) << "Cannot create a SDL surface from a Cairo surface"; | |
95 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
96 } | |
97 } | |
98 | |
99 pendingFrame_ = false; | |
100 } | |
101 | |
102 | |
103 bool SdlBuffering::RenderOffscreen(IViewport& viewport) | |
104 { | |
105 boost::mutex::scoped_lock lock(mutex_); | |
106 | |
107 if (offscreenSurface_.get() == NULL) | |
108 { | |
109 return false; | |
110 } | |
111 | |
112 Orthanc::ImageAccessor target = offscreenSurface_->GetAccessor(); | |
113 | |
114 if (viewport.Render(target) && | |
115 !pendingFrame_) | |
116 { | |
117 pendingFrame_ = true; | |
118 return true; | |
119 } | |
120 else | |
121 { | |
122 return false; | |
123 } | |
124 } | |
125 | |
126 | |
127 void SdlBuffering::SwapToScreen(SdlWindow& window) | |
128 { | |
129 if (!pendingFrame_ || | |
130 offscreenSurface_.get() == NULL || | |
131 onscreenSurface_.get() == NULL) | |
132 { | |
133 return; | |
134 } | |
135 | |
136 { | |
137 boost::mutex::scoped_lock lock(mutex_); | |
138 onscreenSurface_->Copy(*offscreenSurface_); | |
139 } | |
140 | |
141 window.Render(sdlSurface_); | |
142 pendingFrame_ = false; | |
143 } | |
144 } | |
145 | |
146 #endif |