Mercurial > hg > orthanc-stone
diff Applications/Sdl/SdlBuffering.cpp @ 51:b340879da9bd
reorganization
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Thu, 27 Apr 2017 14:50:20 +0200 |
parents | Framework/Applications/Sdl/SdlBuffering.cpp@28956ed68280 |
children | ea377c770ef4 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Applications/Sdl/SdlBuffering.cpp Thu Apr 27 14:50:20 2017 +0200 @@ -0,0 +1,134 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017 Osimis, Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero General Public License + * as published by the Free Software Foundation, either version 3 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "SdlBuffering.h" + +#if ORTHANC_ENABLE_SDL == 1 + +#include "../../../Resources/Orthanc/Core/Logging.h" +#include "../../../Resources/Orthanc/Core/OrthancException.h" + +namespace OrthancStone +{ + SdlBuffering::SdlBuffering() : + sdlSurface_(NULL), + pendingFrame_(false) + { + } + + + SdlBuffering::~SdlBuffering() + { + if (sdlSurface_) + { + SDL_FreeSurface(sdlSurface_); + } + } + + + void SdlBuffering::SetSize(unsigned int width, + unsigned int height, + IViewport& viewport) + { + boost::mutex::scoped_lock lock(mutex_); + + viewport.SetSize(width, height); + + if (offscreenSurface_.get() == NULL || + offscreenSurface_->GetWidth() != width || + offscreenSurface_->GetHeight() != height) + { + offscreenSurface_.reset(new CairoSurface(width, height)); + } + + if (onscreenSurface_.get() == NULL || + onscreenSurface_->GetWidth() != width || + onscreenSurface_->GetHeight() != height) + { + onscreenSurface_.reset(new CairoSurface(width, height)); + + // TODO Big endian? + static const uint32_t rmask = 0x00ff0000; + static const uint32_t gmask = 0x0000ff00; + static const uint32_t bmask = 0x000000ff; + + if (sdlSurface_) + { + SDL_FreeSurface(sdlSurface_); + } + + sdlSurface_ = SDL_CreateRGBSurfaceFrom(onscreenSurface_->GetBuffer(), width, height, 32, + onscreenSurface_->GetPitch(), rmask, gmask, bmask, 0); + if (!sdlSurface_) + { + LOG(ERROR) << "Cannot create a SDL surface from a Cairo surface"; + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + } + + pendingFrame_ = false; + } + + + bool SdlBuffering::RenderOffscreen(IViewport& viewport) + { + boost::mutex::scoped_lock lock(mutex_); + + if (offscreenSurface_.get() == NULL) + { + return false; + } + + Orthanc::ImageAccessor target = offscreenSurface_->GetAccessor(); + + if (viewport.Render(target) && + !pendingFrame_) + { + pendingFrame_ = true; + return true; + } + else + { + return false; + } + } + + + void SdlBuffering::SwapToScreen(SdlWindow& window) + { + if (!pendingFrame_ || + offscreenSurface_.get() == NULL || + onscreenSurface_.get() == NULL) + { + return; + } + + { + boost::mutex::scoped_lock lock(mutex_); + onscreenSurface_->Copy(*offscreenSurface_); + } + + window.Render(sdlSurface_); + pendingFrame_ = false; + } +} + +#endif