Mercurial > hg > orthanc-stone
changeset 1516:2b7d34cb764f
rename file
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 08 Jul 2020 18:25:26 +0200 |
| parents | b750b6eab453 |
| children | 307a805d0587 |
| files | StoneWebViewer/WebAssembly/CMakeLists.txt StoneWebViewer/WebAssembly/StoneWebViewer.cpp StoneWebViewer/WebAssembly/Test.cpp |
| diffstat | 3 files changed, 2249 insertions(+), 2249 deletions(-) [+] |
line wrap: on
line diff
--- a/StoneWebViewer/WebAssembly/CMakeLists.txt Tue Jul 07 20:52:35 2020 +0200 +++ b/StoneWebViewer/WebAssembly/CMakeLists.txt Wed Jul 08 18:25:26 2020 +0200 @@ -57,9 +57,9 @@ add_custom_command( COMMAND - ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/ParseWebAssemblyExports.py --libclang=${LIBCLANG} ${CMAKE_SOURCE_DIR}/Test.cpp > ${STONE_WRAPPER} + ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/ParseWebAssemblyExports.py --libclang=${LIBCLANG} ${CMAKE_SOURCE_DIR}/StoneWebViewer.cpp > ${STONE_WRAPPER} DEPENDS - ${CMAKE_SOURCE_DIR}/Test.cpp + ${CMAKE_SOURCE_DIR}/StoneWebViewer.cpp ${CMAKE_SOURCE_DIR}/ParseWebAssemblyExports.py OUTPUT ${STONE_WRAPPER} @@ -77,7 +77,7 @@ add_executable(StoneWebViewer ${ORTHANC_STONE_SOURCES} ${AUTOGENERATED_SOURCES} - Test.cpp + StoneWebViewer.cpp ) # Make sure to have the wrapper generated
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/StoneWebViewer/WebAssembly/StoneWebViewer.cpp Wed Jul 08 18:25:26 2020 +0200 @@ -0,0 +1,2246 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2020 Osimis S.A., 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 <emscripten.h> + + +#define DISPATCH_JAVASCRIPT_EVENT(name) \ + EM_ASM( \ + const customEvent = document.createEvent("CustomEvent"); \ + customEvent.initCustomEvent(name, false, false, undefined); \ + window.dispatchEvent(customEvent); \ + ); + + +#define EXTERN_CATCH_EXCEPTIONS \ + catch (Orthanc::OrthancException& e) \ + { \ + LOG(ERROR) << "OrthancException: " << e.What(); \ + DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ + } \ + catch (OrthancStone::StoneException& e) \ + { \ + LOG(ERROR) << "StoneException: " << e.What(); \ + DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ + } \ + catch (std::exception& e) \ + { \ + LOG(ERROR) << "Runtime error: " << e.what(); \ + DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ + } \ + catch (...) \ + { \ + LOG(ERROR) << "Native exception"; \ + DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ + } + + +#include <Cache/MemoryObjectCache.h> +#include <DicomFormat/DicomArray.h> +#include <DicomParsing/Internals/DicomImageDecoder.h> +#include <Images/Image.h> +#include <Images/ImageProcessing.h> +#include <Images/JpegReader.h> +#include <Logging.h> + +#include "../../OrthancStone/Sources/Loaders/DicomResourcesLoader.h" +#include "../../OrthancStone/Sources/Loaders/SeriesMetadataLoader.h" +#include "../../OrthancStone/Sources/Loaders/SeriesThumbnailsLoader.h" +#include "../../OrthancStone/Sources/Loaders/WebAssemblyLoadersContext.h" +#include "../../OrthancStone/Sources/Messages/ObserverBase.h" +#include "../../OrthancStone/Sources/Oracle/ParseDicomFromWadoCommand.h" +#include "../../OrthancStone/Sources/Scene2D/ColorTextureSceneLayer.h" +#include "../../OrthancStone/Sources/Scene2D/FloatTextureSceneLayer.h" +#include "../../OrthancStone/Sources/Scene2D/PolylineSceneLayer.h" +#include "../../OrthancStone/Sources/StoneException.h" +#include "../../OrthancStone/Sources/Toolbox/DicomInstanceParameters.h" +#include "../../OrthancStone/Sources/Toolbox/GeometryToolbox.h" +#include "../../OrthancStone/Sources/Toolbox/SortedFrames.h" +#include "../../OrthancStone/Sources/Viewport/WebGLViewport.h" + +#include <boost/make_shared.hpp> +#include <stdio.h> + + +enum EMSCRIPTEN_KEEPALIVE ThumbnailType +{ + ThumbnailType_Image, + ThumbnailType_NoPreview, + ThumbnailType_Pdf, + ThumbnailType_Video, + ThumbnailType_Loading, + ThumbnailType_Unknown +}; + + +enum EMSCRIPTEN_KEEPALIVE DisplayedFrameQuality +{ +DisplayedFrameQuality_None, + DisplayedFrameQuality_Low, + DisplayedFrameQuality_High + }; + + + +static const int PRIORITY_HIGH = -100; +static const int PRIORITY_LOW = 100; +static const int PRIORITY_NORMAL = 0; + +static const unsigned int QUALITY_JPEG = 0; +static const unsigned int QUALITY_FULL = 1; + +class ResourcesLoader : public OrthancStone::ObserverBase<ResourcesLoader> +{ +public: + class IObserver : public boost::noncopyable + { + public: + virtual ~IObserver() + { + } + + virtual void SignalResourcesLoaded() = 0; + + virtual void SignalSeriesThumbnailLoaded(const std::string& studyInstanceUid, + const std::string& seriesInstanceUid) = 0; + + virtual void SignalSeriesMetadataLoaded(const std::string& studyInstanceUid, + const std::string& seriesInstanceUid) = 0; + }; + +private: + std::unique_ptr<IObserver> observer_; + OrthancStone::DicomSource source_; + size_t pending_; + boost::shared_ptr<OrthancStone::LoadedDicomResources> studies_; + boost::shared_ptr<OrthancStone::LoadedDicomResources> series_; + boost::shared_ptr<OrthancStone::DicomResourcesLoader> resourcesLoader_; + boost::shared_ptr<OrthancStone::SeriesThumbnailsLoader> thumbnailsLoader_; + boost::shared_ptr<OrthancStone::SeriesMetadataLoader> metadataLoader_; + + ResourcesLoader(const OrthancStone::DicomSource& source) : + source_(source), + pending_(0), + studies_(new OrthancStone::LoadedDicomResources(Orthanc::DICOM_TAG_STUDY_INSTANCE_UID)), + series_(new OrthancStone::LoadedDicomResources(Orthanc::DICOM_TAG_SERIES_INSTANCE_UID)) + { + } + + void Handle(const OrthancStone::DicomResourcesLoader::SuccessMessage& message) + { + const Orthanc::SingleValueObject<Orthanc::ResourceType>& payload = + dynamic_cast<const Orthanc::SingleValueObject<Orthanc::ResourceType>&>(message.GetUserPayload()); + + OrthancStone::LoadedDicomResources& dicom = *message.GetResources(); + + LOG(INFO) << "resources loaded: " << dicom.GetSize() + << ", " << Orthanc::EnumerationToString(payload.GetValue()); + + if (payload.GetValue() == Orthanc::ResourceType_Series) + { + for (size_t i = 0; i < dicom.GetSize(); i++) + { + std::string studyInstanceUid, seriesInstanceUid; + if (dicom.GetResource(i).LookupStringValue( + studyInstanceUid, Orthanc::DICOM_TAG_STUDY_INSTANCE_UID, false) && + dicom.GetResource(i).LookupStringValue( + seriesInstanceUid, Orthanc::DICOM_TAG_SERIES_INSTANCE_UID, false)) + { + thumbnailsLoader_->ScheduleLoadThumbnail(source_, "", studyInstanceUid, seriesInstanceUid); + metadataLoader_->ScheduleLoadSeries(PRIORITY_LOW + 1, source_, studyInstanceUid, seriesInstanceUid); + } + } + } + + if (pending_ == 0) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + else + { + pending_ --; + if (pending_ == 0 && + observer_.get() != NULL) + { + observer_->SignalResourcesLoaded(); + } + } + } + + void Handle(const OrthancStone::SeriesThumbnailsLoader::SuccessMessage& message) + { + if (observer_.get() != NULL) + { + observer_->SignalSeriesThumbnailLoaded( + message.GetStudyInstanceUid(), message.GetSeriesInstanceUid()); + } + } + + void Handle(const OrthancStone::SeriesMetadataLoader::SuccessMessage& message) + { + if (observer_.get() != NULL) + { + observer_->SignalSeriesMetadataLoaded( + message.GetStudyInstanceUid(), message.GetSeriesInstanceUid()); + } + } + + void FetchInternal(const std::string& studyInstanceUid, + const std::string& seriesInstanceUid) + { + // Firstly, load the study + Orthanc::DicomMap filter; + filter.SetValue(Orthanc::DICOM_TAG_STUDY_INSTANCE_UID, studyInstanceUid, false); + + std::set<Orthanc::DicomTag> tags; + tags.insert(Orthanc::DICOM_TAG_STUDY_DESCRIPTION); // Necessary for Orthanc DICOMweb plugin + + resourcesLoader_->ScheduleQido( + studies_, PRIORITY_HIGH, source_, Orthanc::ResourceType_Study, filter, tags, + new Orthanc::SingleValueObject<Orthanc::ResourceType>(Orthanc::ResourceType_Study)); + + // Secondly, load the series + if (!seriesInstanceUid.empty()) + { + filter.SetValue(Orthanc::DICOM_TAG_SERIES_INSTANCE_UID, seriesInstanceUid, false); + } + + tags.insert(Orthanc::DICOM_TAG_SERIES_NUMBER); // Necessary for Google Cloud Platform + + resourcesLoader_->ScheduleQido( + series_, PRIORITY_HIGH, source_, Orthanc::ResourceType_Series, filter, tags, + new Orthanc::SingleValueObject<Orthanc::ResourceType>(Orthanc::ResourceType_Series)); + + pending_ += 2; + } + +public: + static boost::shared_ptr<ResourcesLoader> Create(OrthancStone::ILoadersContext::ILock& lock, + const OrthancStone::DicomSource& source) + { + boost::shared_ptr<ResourcesLoader> loader(new ResourcesLoader(source)); + + loader->resourcesLoader_ = OrthancStone::DicomResourcesLoader::Create(lock); + loader->thumbnailsLoader_ = OrthancStone::SeriesThumbnailsLoader::Create(lock, PRIORITY_LOW); + loader->metadataLoader_ = OrthancStone::SeriesMetadataLoader::Create(lock); + + loader->Register<OrthancStone::DicomResourcesLoader::SuccessMessage>( + *loader->resourcesLoader_, &ResourcesLoader::Handle); + + loader->Register<OrthancStone::SeriesThumbnailsLoader::SuccessMessage>( + *loader->thumbnailsLoader_, &ResourcesLoader::Handle); + + loader->Register<OrthancStone::SeriesMetadataLoader::SuccessMessage>( + *loader->metadataLoader_, &ResourcesLoader::Handle); + + return loader; + } + + void FetchAllStudies() + { + FetchInternal("", ""); + } + + void FetchStudy(const std::string& studyInstanceUid) + { + FetchInternal(studyInstanceUid, ""); + } + + void FetchSeries(const std::string& studyInstanceUid, + const std::string& seriesInstanceUid) + { + FetchInternal(studyInstanceUid, seriesInstanceUid); + } + + size_t GetStudiesCount() const + { + return studies_->GetSize(); + } + + size_t GetSeriesCount() const + { + return series_->GetSize(); + } + + void GetStudy(Orthanc::DicomMap& target, + size_t i) + { + target.Assign(studies_->GetResource(i)); + } + + void GetSeries(Orthanc::DicomMap& target, + size_t i) + { + target.Assign(series_->GetResource(i)); + + // Complement with the study-level tags + std::string studyInstanceUid; + if (target.LookupStringValue(studyInstanceUid, Orthanc::DICOM_TAG_STUDY_INSTANCE_UID, false) && + studies_->HasResource(studyInstanceUid)) + { + studies_->MergeResource(target, studyInstanceUid); + } + } + + OrthancStone::SeriesThumbnailType GetSeriesThumbnail(std::string& image, + std::string& mime, + const std::string& seriesInstanceUid) + { + return thumbnailsLoader_->GetSeriesThumbnail(image, mime, seriesInstanceUid); + } + + void FetchSeriesMetadata(int priority, + const std::string& studyInstanceUid, + const std::string& seriesInstanceUid) + { + metadataLoader_->ScheduleLoadSeries(priority, source_, studyInstanceUid, seriesInstanceUid); + } + + bool IsSeriesComplete(const std::string& seriesInstanceUid) + { + OrthancStone::SeriesMetadataLoader::Accessor accessor(*metadataLoader_, seriesInstanceUid); + return accessor.IsComplete(); + } + + bool SortSeriesFrames(OrthancStone::SortedFrames& target, + const std::string& seriesInstanceUid) + { + OrthancStone::SeriesMetadataLoader::Accessor accessor(*metadataLoader_, seriesInstanceUid); + + if (accessor.IsComplete()) + { + target.Clear(); + + for (size_t i = 0; i < accessor.GetInstancesCount(); i++) + { + target.AddInstance(accessor.GetInstance(i)); + } + + target.Sort(); + + return true; + } + else + { + return false; + } + } + + void AcquireObserver(IObserver* observer) + { + observer_.reset(observer); + } +}; + + + +class FramesCache : public boost::noncopyable +{ +private: + class CachedImage : public Orthanc::ICacheable + { + private: + std::unique_ptr<Orthanc::ImageAccessor> image_; + unsigned int quality_; + + public: + CachedImage(Orthanc::ImageAccessor* image, + unsigned int quality) : + image_(image), + quality_(quality) + { + assert(image != NULL); + } + + virtual size_t GetMemoryUsage() const + { + assert(image_.get() != NULL); + return (image_->GetBytesPerPixel() * image_->GetPitch() * image_->GetHeight()); + } + + const Orthanc::ImageAccessor& GetImage() const + { + assert(image_.get() != NULL); + return *image_; + } + + unsigned int GetQuality() const + { + return quality_; + } + }; + + + static std::string GetKey(const std::string& sopInstanceUid, + size_t frameIndex) + { + return sopInstanceUid + "|" + boost::lexical_cast<std::string>(frameIndex); + } + + + Orthanc::MemoryObjectCache cache_; + +public: + FramesCache() + { + SetMaximumSize(100 * 1024 * 1024); // 100 MB + } + + size_t GetMaximumSize() + { + return cache_.GetMaximumSize(); + } + + void SetMaximumSize(size_t size) + { + cache_.SetMaximumSize(size); + } + + /** + * Returns "true" iff the provided image has better quality than the + * previously cached one, or if no cache was previously available. + **/ + bool Acquire(const std::string& sopInstanceUid, + size_t frameIndex, + Orthanc::ImageAccessor* image /* transfer ownership */, + unsigned int quality) + { + std::unique_ptr<Orthanc::ImageAccessor> protection(image); + + if (image == NULL) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); + } + else if (image->GetFormat() != Orthanc::PixelFormat_Float32 && + image->GetFormat() != Orthanc::PixelFormat_RGB24) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); + } + + const std::string& key = GetKey(sopInstanceUid, frameIndex); + + bool invalidate = false; + + { + /** + * Access the previous cached entry, with side effect of tagging + * it as the most recently accessed frame (update of LRU recycling) + **/ + Orthanc::MemoryObjectCache::Accessor accessor(cache_, key, false /* unique lock */); + + if (accessor.IsValid()) + { + const CachedImage& previous = dynamic_cast<const CachedImage&>(accessor.GetValue()); + + // There is already a cached image for this frame + if (previous.GetQuality() < quality) + { + // The previously stored image has poorer quality + invalidate = true; + } + else + { + // No update in the quality, don't change the cache + return false; + } + } + else + { + invalidate = false; + } + } + + if (invalidate) + { + cache_.Invalidate(key); + } + + cache_.Acquire(key, new CachedImage(protection.release(), quality)); + return true; + } + + class Accessor : public boost::noncopyable + { + private: + Orthanc::MemoryObjectCache::Accessor accessor_; + + const CachedImage& GetCachedImage() const + { + if (IsValid()) + { + return dynamic_cast<CachedImage&>(accessor_.GetValue()); + } + else + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); + } + } + + public: + Accessor(FramesCache& that, + const std::string& sopInstanceUid, + size_t frameIndex) : + accessor_(that.cache_, GetKey(sopInstanceUid, frameIndex), false /* shared lock */) + { + } + + bool IsValid() const + { + return accessor_.IsValid(); + } + + const Orthanc::ImageAccessor& GetImage() const + { + return GetCachedImage().GetImage(); + } + + unsigned int GetQuality() const + { + return GetCachedImage().GetQuality(); + } + }; +}; + + + +class SeriesCursor : public boost::noncopyable +{ +public: + enum Action + { + Action_FastPlus, + Action_Plus, + Action_None, + Action_Minus, + Action_FastMinus + }; + +private: + std::vector<size_t> prefetch_; + int framesCount_; + int currentFrame_; + bool isCircular_; + int fastDelta_; + Action lastAction_; + + int ComputeNextFrame(int currentFrame, + Action action) const + { + if (framesCount_ == 0) + { + assert(currentFrame == 0); + return 0; + } + + int nextFrame = currentFrame; + + switch (action) + { + case Action_FastPlus: + nextFrame += fastDelta_; + break; + + case Action_Plus: + nextFrame += 1; + break; + + case Action_None: + break; + + case Action_Minus: + nextFrame -= 1; + break; + + case Action_FastMinus: + nextFrame -= fastDelta_; + break; + + default: + throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); + } + + if (isCircular_) + { + while (nextFrame < 0) + { + nextFrame += framesCount_; + } + + while (nextFrame >= framesCount_) + { + nextFrame -= framesCount_; + } + } + else + { + if (nextFrame < 0) + { + nextFrame = 0; + } + else if (nextFrame >= framesCount_) + { + nextFrame = framesCount_ - 1; + } + } + + return nextFrame; + } + + void UpdatePrefetch() + { + /** + * This method will order the frames of the series according to + * the number of "actions" (i.e. mouse wheels) that are necessary + * to reach them, starting from the current frame. It is assumed + * that once one action is done, it is more likely that the user + * will do the same action just afterwards. + **/ + + prefetch_.clear(); + + if (framesCount_ == 0) + { + return; + } + + prefetch_.reserve(framesCount_); + + // Breadth-first search using a FIFO. The queue associates a frame + // and the action that is the most likely in this frame + typedef std::list< std::pair<int, Action> > Queue; + + Queue queue; + std::set<int> visited; // Frames that have already been visited + + queue.push_back(std::make_pair(currentFrame_, lastAction_)); + + while (!queue.empty()) + { + int frame = queue.front().first; + Action previousAction = queue.front().second; + queue.pop_front(); + + if (visited.find(frame) == visited.end()) + { + visited.insert(frame); + prefetch_.push_back(frame); + + switch (previousAction) + { + case Action_None: + case Action_Plus: + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Plus), Action_Plus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Minus), Action_Minus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastPlus), Action_FastPlus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastMinus), Action_FastMinus)); + break; + + case Action_Minus: + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Minus), Action_Minus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Plus), Action_Plus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastMinus), Action_FastMinus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastPlus), Action_FastPlus)); + break; + + case Action_FastPlus: + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastPlus), Action_FastPlus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastMinus), Action_FastMinus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Plus), Action_Plus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Minus), Action_Minus)); + break; + + case Action_FastMinus: + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastMinus), Action_FastMinus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastPlus), Action_FastPlus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Minus), Action_Minus)); + queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Plus), Action_Plus)); + break; + + default: + throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); + } + } + } + + assert(prefetch_.size() == framesCount_); + } + + bool CheckFrameIndex(int frame) const + { + return ((framesCount_ == 0 && frame == 0) || + (framesCount_ > 0 && frame >= 0 && frame < framesCount_)); + } + +public: + SeriesCursor(size_t framesCount) : + framesCount_(framesCount), + currentFrame_(framesCount / 2), // Start at the middle frame + isCircular_(false), + lastAction_(Action_None) + { + SetFastDelta(framesCount / 20); + UpdatePrefetch(); + } + + void SetCircular(bool isCircular) + { + isCircular_ = isCircular; + UpdatePrefetch(); + } + + void SetFastDelta(int delta) + { + fastDelta_ = (delta < 0 ? -delta : delta); + + if (fastDelta_ <= 0) + { + fastDelta_ = 1; + } + } + + void SetCurrentIndex(size_t frame) + { + if (frame >= framesCount_) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); + } + else + { + currentFrame_ = frame; + lastAction_ = Action_None; + UpdatePrefetch(); + } + } + + size_t GetCurrentIndex() const + { + assert(CheckFrameIndex(currentFrame_)); + return static_cast<size_t>(currentFrame_); + } + + void Apply(Action action) + { + currentFrame_ = ComputeNextFrame(currentFrame_, action); + lastAction_ = action; + UpdatePrefetch(); + } + + size_t GetPrefetchSize() const + { + assert(prefetch_.size() == framesCount_); + return prefetch_.size(); + } + + size_t GetPrefetchFrameIndex(size_t i) const + { + if (i >= prefetch_.size()) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); + } + else + { + assert(CheckFrameIndex(prefetch_[i])); + return static_cast<size_t>(prefetch_[i]); + } + } +}; + + + + +class FrameGeometry +{ +private: + bool isValid_; + std::string frameOfReferenceUid_; + OrthancStone::CoordinateSystem3D coordinates_; + double pixelSpacingX_; + double pixelSpacingY_; + OrthancStone::Extent2D extent_; + +public: + FrameGeometry() : + isValid_(false) + { + } + + FrameGeometry(const Orthanc::DicomMap& tags) : + isValid_(false), + coordinates_(tags) + { + if (!tags.LookupStringValue( + frameOfReferenceUid_, Orthanc::DICOM_TAG_FRAME_OF_REFERENCE_UID, false)) + { + frameOfReferenceUid_.clear(); + } + + OrthancStone::GeometryToolbox::GetPixelSpacing(pixelSpacingX_, pixelSpacingY_, tags); + + unsigned int rows, columns; + if (tags.HasTag(Orthanc::DICOM_TAG_IMAGE_POSITION_PATIENT) && + tags.HasTag(Orthanc::DICOM_TAG_IMAGE_ORIENTATION_PATIENT) && + tags.ParseUnsignedInteger32(rows, Orthanc::DICOM_TAG_ROWS) && + tags.ParseUnsignedInteger32(columns, Orthanc::DICOM_TAG_COLUMNS)) + { + double ox = -pixelSpacingX_ / 2.0; + double oy = -pixelSpacingY_ / 2.0; + extent_.AddPoint(ox, oy); + extent_.AddPoint(ox + pixelSpacingX_ * static_cast<double>(columns), + oy + pixelSpacingY_ * static_cast<double>(rows)); + + isValid_ = true; + } + } + + bool IsValid() const + { + return isValid_; + } + + const std::string& GetFrameOfReferenceUid() const + { + if (isValid_) + { + return frameOfReferenceUid_; + } + else + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); + } + } + + const OrthancStone::CoordinateSystem3D& GetCoordinates() const + { + if (isValid_) + { + return coordinates_; + } + else + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); + } + } + + double GetPixelSpacingX() const + { + if (isValid_) + { + return pixelSpacingX_; + } + else + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); + } + } + + double GetPixelSpacingY() const + { + if (isValid_) + { + return pixelSpacingY_; + } + else + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); + } + } + + bool Intersect(double& x1, // Coordinates of the clipped line (out) + double& y1, + double& x2, + double& y2, + const FrameGeometry& other) const + { + if (this == &other) + { + return false; + } + + OrthancStone::Vector direction, origin; + + if (IsValid() && + other.IsValid() && + !extent_.IsEmpty() && + frameOfReferenceUid_ == other.frameOfReferenceUid_ && + OrthancStone::GeometryToolbox::IntersectTwoPlanes( + origin, direction, + coordinates_.GetOrigin(), coordinates_.GetNormal(), + other.coordinates_.GetOrigin(), other.coordinates_.GetNormal())) + { + double ax, ay, bx, by; + coordinates_.ProjectPoint(ax, ay, origin); + coordinates_.ProjectPoint(bx, by, origin + 100.0 * direction); + + return OrthancStone::GeometryToolbox::ClipLineToRectangle( + x1, y1, x2, y2, + ax, ay, bx, by, + extent_.GetX1(), extent_.GetY1(), extent_.GetX2(), extent_.GetY2()); + } + else + { + return false; + } + } +}; + + + +class ViewerViewport : public OrthancStone::ObserverBase<ViewerViewport> +{ +public: + class IObserver : public boost::noncopyable + { + public: + virtual ~IObserver() + { + } + + virtual void SignalFrameUpdated(const ViewerViewport& viewport, + size_t currentFrame, + size_t countFrames, + DisplayedFrameQuality quality) = 0; + }; + +private: + static const int LAYER_TEXTURE = 0; + static const int LAYER_REFERENCE_LINES = 1; + + + class ICommand : public Orthanc::IDynamicObject + { + private: + boost::shared_ptr<ViewerViewport> viewport_; + + public: + ICommand(boost::shared_ptr<ViewerViewport> viewport) : + viewport_(viewport) + { + if (viewport == NULL) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); + } + } + + virtual ~ICommand() + { + } + + ViewerViewport& GetViewport() const + { + assert(viewport_ != NULL); + return *viewport_; + } + + virtual void Handle(const OrthancStone::DicomResourcesLoader::SuccessMessage& message) const + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); + } + + virtual void Handle(const OrthancStone::HttpCommand::SuccessMessage& message) const + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); + } + + virtual void Handle(const OrthancStone::ParseDicomSuccessMessage& message) const + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); + } + }; + + class SetDefaultWindowingCommand : public ICommand + { + public: + SetDefaultWindowingCommand(boost::shared_ptr<ViewerViewport> viewport) : + ICommand(viewport) + { + } + + virtual void Handle(const OrthancStone::DicomResourcesLoader::SuccessMessage& message) const ORTHANC_OVERRIDE + { + if (message.GetResources()->GetSize() != 1) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol); + } + + const Orthanc::DicomMap& dicom = message.GetResources()->GetResource(0); + + { + OrthancStone::DicomInstanceParameters params(dicom); + + if (params.HasDefaultWindowing()) + { + GetViewport().defaultWindowingCenter_ = params.GetDefaultWindowingCenter(); + GetViewport().defaultWindowingWidth_ = params.GetDefaultWindowingWidth(); + LOG(INFO) << "Default windowing: " << params.GetDefaultWindowingCenter() + << "," << params.GetDefaultWindowingWidth(); + + GetViewport().windowingCenter_ = params.GetDefaultWindowingCenter(); + GetViewport().windowingWidth_ = params.GetDefaultWindowingWidth(); + } + else + { + LOG(INFO) << "No default windowing"; + GetViewport().ResetDefaultWindowing(); + } + } + + GetViewport().DisplayCurrentFrame(); + } + }; + + class SetLowQualityFrame : public ICommand + { + private: + std::string sopInstanceUid_; + unsigned int frameIndex_; + float windowCenter_; + float windowWidth_; + bool isMonochrome1_; + bool isPrefetch_; + + public: + SetLowQualityFrame(boost::shared_ptr<ViewerViewport> viewport, + const std::string& sopInstanceUid, + unsigned int frameIndex, + float windowCenter, + float windowWidth, + bool isMonochrome1, + bool isPrefetch) : + ICommand(viewport), + sopInstanceUid_(sopInstanceUid), + frameIndex_(frameIndex), + windowCenter_(windowCenter), + windowWidth_(windowWidth), + isMonochrome1_(isMonochrome1), + isPrefetch_(isPrefetch) + { + } + + virtual void Handle(const OrthancStone::HttpCommand::SuccessMessage& message) const ORTHANC_OVERRIDE + { + std::unique_ptr<Orthanc::JpegReader> jpeg(new Orthanc::JpegReader); + jpeg->ReadFromMemory(message.GetAnswer()); + + bool updatedCache; + + switch (jpeg->GetFormat()) + { + case Orthanc::PixelFormat_RGB24: + updatedCache = GetViewport().cache_->Acquire( + sopInstanceUid_, frameIndex_, jpeg.release(), QUALITY_JPEG); + break; + + case Orthanc::PixelFormat_Grayscale8: + { + if (isMonochrome1_) + { + Orthanc::ImageProcessing::Invert(*jpeg); + } + + std::unique_ptr<Orthanc::Image> converted( + new Orthanc::Image(Orthanc::PixelFormat_Float32, jpeg->GetWidth(), + jpeg->GetHeight(), false)); + + Orthanc::ImageProcessing::Convert(*converted, *jpeg); + + /** + + Orthanc::ImageProcessing::ShiftScale() computes "(x + offset) * scaling". + The system to solve is thus: + + (0 + offset) * scaling = windowingCenter - windowingWidth / 2 [a] + (255 + offset) * scaling = windowingCenter + windowingWidth / 2 [b] + + Resolution: + + [b - a] => 255 * scaling = windowingWidth + [a] => offset = (windowingCenter - windowingWidth / 2) / scaling + + **/ + + const float scaling = windowWidth_ / 255.0f; + const float offset = (OrthancStone::LinearAlgebra::IsCloseToZero(scaling) ? 0 : + (windowCenter_ - windowWidth_ / 2.0f) / scaling); + + Orthanc::ImageProcessing::ShiftScale(*converted, offset, scaling, false); + updatedCache = GetViewport().cache_->Acquire( + sopInstanceUid_, frameIndex_, converted.release(), QUALITY_JPEG); + break; + } + + default: + throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); + } + + if (updatedCache) + { + GetViewport().SignalUpdatedFrame(sopInstanceUid_, frameIndex_); + } + + if (isPrefetch_) + { + GetViewport().ScheduleNextPrefetch(); + } + } + }; + + + class SetFullDicomFrame : public ICommand + { + private: + std::string sopInstanceUid_; + unsigned int frameIndex_; + bool isPrefetch_; + + public: + SetFullDicomFrame(boost::shared_ptr<ViewerViewport> viewport, + const std::string& sopInstanceUid, + unsigned int frameIndex, + bool isPrefetch) : + ICommand(viewport), + sopInstanceUid_(sopInstanceUid), + frameIndex_(frameIndex), + isPrefetch_(isPrefetch) + { + } + + virtual void Handle(const OrthancStone::ParseDicomSuccessMessage& message) const ORTHANC_OVERRIDE + { + Orthanc::DicomMap tags; + message.GetDicom().ExtractDicomSummary(tags); + + std::string s; + if (!tags.LookupStringValue(s, Orthanc::DICOM_TAG_SOP_INSTANCE_UID, false)) + { + // Safety check + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + + std::unique_ptr<Orthanc::ImageAccessor> frame( + Orthanc::DicomImageDecoder::Decode(message.GetDicom(), frameIndex_)); + + if (frame.get() == NULL) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + + bool updatedCache; + + if (frame->GetFormat() == Orthanc::PixelFormat_RGB24) + { + updatedCache = GetViewport().cache_->Acquire( + sopInstanceUid_, frameIndex_, frame.release(), QUALITY_FULL); + } + else + { + double a = 1; + double b = 0; + + double doseScaling; + if (tags.ParseDouble(doseScaling, Orthanc::DICOM_TAG_DOSE_GRID_SCALING)) + { + a = doseScaling; + } + + double rescaleIntercept, rescaleSlope; + if (tags.ParseDouble(rescaleIntercept, Orthanc::DICOM_TAG_RESCALE_INTERCEPT) && + tags.ParseDouble(rescaleSlope, Orthanc::DICOM_TAG_RESCALE_SLOPE)) + { + a *= rescaleSlope; + b = rescaleIntercept; + } + + std::unique_ptr<Orthanc::ImageAccessor> converted( + new Orthanc::Image(Orthanc::PixelFormat_Float32, frame->GetWidth(), frame->GetHeight(), false)); + Orthanc::ImageProcessing::Convert(*converted, *frame); + Orthanc::ImageProcessing::ShiftScale2(*converted, b, a, false); + + updatedCache = GetViewport().cache_->Acquire( + sopInstanceUid_, frameIndex_, converted.release(), QUALITY_FULL); + } + + if (updatedCache) + { + GetViewport().SignalUpdatedFrame(sopInstanceUid_, frameIndex_); + } + + if (isPrefetch_) + { + GetViewport().ScheduleNextPrefetch(); + } + } + }; + + + class PrefetchItem + { + private: + size_t frameIndex_; + bool isFull_; + + public: + PrefetchItem(size_t frameIndex, + bool isFull) : + frameIndex_(frameIndex), + isFull_(isFull) + { + } + + size_t GetFrameIndex() const + { + return frameIndex_; + } + + bool IsFull() const + { + return isFull_; + } + }; + + + std::unique_ptr<IObserver> observer_; + OrthancStone::ILoadersContext& context_; + boost::shared_ptr<OrthancStone::WebGLViewport> viewport_; + boost::shared_ptr<OrthancStone::DicomResourcesLoader> loader_; + OrthancStone::DicomSource source_; + boost::shared_ptr<FramesCache> cache_; + std::unique_ptr<OrthancStone::SortedFrames> frames_; + std::unique_ptr<SeriesCursor> cursor_; + float windowingCenter_; + float windowingWidth_; + float defaultWindowingCenter_; + float defaultWindowingWidth_; + bool inverted_; + bool fitNextContent_; + bool isCtrlDown_; + FrameGeometry currentFrameGeometry_; + std::list<PrefetchItem> prefetchQueue_; + + void ScheduleNextPrefetch() + { + while (!prefetchQueue_.empty()) + { + size_t index = prefetchQueue_.front().GetFrameIndex(); + bool isFull = prefetchQueue_.front().IsFull(); + prefetchQueue_.pop_front(); + + const std::string sopInstanceUid = frames_->GetFrameSopInstanceUid(index); + unsigned int frame = frames_->GetFrameIndex(index); + + { + FramesCache::Accessor accessor(*cache_, sopInstanceUid, frame); + if (!accessor.IsValid() || + (isFull && accessor.GetQuality() == 0)) + { + if (isFull) + { + ScheduleLoadFullDicomFrame(index, PRIORITY_NORMAL, true); + } + else + { + ScheduleLoadRenderedFrame(index, PRIORITY_NORMAL, true); + } + return; + } + } + } + } + + + void ResetDefaultWindowing() + { + defaultWindowingCenter_ = 128; + defaultWindowingWidth_ = 256; + + windowingCenter_ = defaultWindowingCenter_; + windowingWidth_ = defaultWindowingWidth_; + + inverted_ = false; + } + + void SignalUpdatedFrame(const std::string& sopInstanceUid, + unsigned int frameIndex) + { + if (cursor_.get() != NULL && + frames_.get() != NULL) + { + size_t index = cursor_->GetCurrentIndex(); + + if (frames_->GetFrameSopInstanceUid(index) == sopInstanceUid && + frames_->GetFrameIndex(index) == frameIndex) + { + DisplayCurrentFrame(); + } + } + } + + void DisplayCurrentFrame() + { + DisplayedFrameQuality quality = DisplayedFrameQuality_None; + + if (cursor_.get() != NULL && + frames_.get() != NULL) + { + const size_t index = cursor_->GetCurrentIndex(); + + unsigned int cachedQuality; + if (!DisplayFrame(cachedQuality, index)) + { + // This frame is not cached yet: Load it + if (source_.HasDicomWebRendered()) + { + ScheduleLoadRenderedFrame(index, PRIORITY_HIGH, false /* not a prefetch */); + } + else + { + ScheduleLoadFullDicomFrame(index, PRIORITY_HIGH, false /* not a prefetch */); + } + } + else if (cachedQuality < QUALITY_FULL) + { + // This frame is only available in low-res: Download the full DICOM + ScheduleLoadFullDicomFrame(index, PRIORITY_HIGH, false /* not a prefetch */); + quality = DisplayedFrameQuality_Low; + } + else + { + quality = DisplayedFrameQuality_High; + } + + currentFrameGeometry_ = FrameGeometry(frames_->GetFrameTags(index)); + + { + // Prepare prefetching + prefetchQueue_.clear(); + for (size_t i = 0; i < cursor_->GetPrefetchSize() && i < 16; i++) + { + size_t a = cursor_->GetPrefetchFrameIndex(i); + if (a != index) + { + prefetchQueue_.push_back(PrefetchItem(a, i < 2)); + } + } + + ScheduleNextPrefetch(); + } + + if (observer_.get() != NULL) + { + observer_->SignalFrameUpdated(*this, cursor_->GetCurrentIndex(), + frames_->GetFramesCount(), quality); + } + } + else + { + currentFrameGeometry_ = FrameGeometry(); + } + } + + void ClearViewport() + { + { + std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); + lock->GetController().GetScene().DeleteLayer(LAYER_TEXTURE); + //lock->GetCompositor().Refresh(lock->GetController().GetScene()); + lock->Invalidate(); + } + } + + bool DisplayFrame(unsigned int& quality, + size_t index) + { + if (frames_.get() == NULL) + { + return false; + } + + const std::string sopInstanceUid = frames_->GetFrameSopInstanceUid(index); + unsigned int frame = frames_->GetFrameIndex(index); + + FramesCache::Accessor accessor(*cache_, sopInstanceUid, frame); + if (accessor.IsValid()) + { + quality = accessor.GetQuality(); + + std::unique_ptr<OrthancStone::TextureBaseSceneLayer> layer; + + switch (accessor.GetImage().GetFormat()) + { + case Orthanc::PixelFormat_RGB24: + layer.reset(new OrthancStone::ColorTextureSceneLayer(accessor.GetImage())); + break; + + case Orthanc::PixelFormat_Float32: + { + std::unique_ptr<OrthancStone::FloatTextureSceneLayer> tmp( + new OrthancStone::FloatTextureSceneLayer(accessor.GetImage())); + tmp->SetCustomWindowing(windowingCenter_, windowingWidth_); + tmp->SetInverted(inverted_ ^ frames_->IsFrameMonochrome1(index)); + layer.reset(tmp.release()); + break; + } + + default: + throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); + } + + layer->SetLinearInterpolation(true); + + double pixelSpacingX, pixelSpacingY; + OrthancStone::GeometryToolbox::GetPixelSpacing( + pixelSpacingX, pixelSpacingY, frames_->GetFrameTags(index)); + layer->SetPixelSpacing(pixelSpacingX, pixelSpacingY); + + if (layer.get() == NULL) + { + return false; + } + else + { + std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); + lock->GetController().GetScene().SetLayer(LAYER_TEXTURE, layer.release()); + + if (fitNextContent_) + { + lock->GetCompositor().RefreshCanvasSize(); + lock->GetCompositor().FitContent(lock->GetController().GetScene()); + fitNextContent_ = false; + } + + //lock->GetCompositor().Refresh(lock->GetController().GetScene()); + lock->Invalidate(); + return true; + } + } + else + { + return false; + } + } + + void ScheduleLoadFullDicomFrame(size_t index, + int priority, + bool isPrefetch) + { + if (frames_.get() != NULL) + { + std::string sopInstanceUid = frames_->GetFrameSopInstanceUid(index); + unsigned int frame = frames_->GetFrameIndex(index); + + { + std::unique_ptr<OrthancStone::ILoadersContext::ILock> lock(context_.Lock()); + lock->Schedule( + GetSharedObserver(), priority, OrthancStone::ParseDicomFromWadoCommand::Create( + source_, frames_->GetStudyInstanceUid(), frames_->GetSeriesInstanceUid(), + sopInstanceUid, false /* transcoding (TODO) */, + Orthanc::DicomTransferSyntax_LittleEndianExplicit /* TODO */, + new SetFullDicomFrame(GetSharedObserver(), sopInstanceUid, frame, isPrefetch))); + } + } + } + + void ScheduleLoadRenderedFrame(size_t index, + int priority, + bool isPrefetch) + { + if (!source_.HasDicomWebRendered()) + { + ScheduleLoadFullDicomFrame(index, priority, isPrefetch); + } + else if (frames_.get() != NULL) + { + std::string sopInstanceUid = frames_->GetFrameSopInstanceUid(index); + unsigned int frame = frames_->GetFrameIndex(index); + bool isMonochrome1 = frames_->IsFrameMonochrome1(index); + + const std::string uri = ("studies/" + frames_->GetStudyInstanceUid() + + "/series/" + frames_->GetSeriesInstanceUid() + + "/instances/" + sopInstanceUid + + "/frames/" + boost::lexical_cast<std::string>(frame + 1) + "/rendered"); + + std::map<std::string, std::string> headers, arguments; + arguments["window"] = ( + boost::lexical_cast<std::string>(defaultWindowingCenter_) + "," + + boost::lexical_cast<std::string>(defaultWindowingWidth_) + ",linear"); + + std::unique_ptr<OrthancStone::IOracleCommand> command( + source_.CreateDicomWebCommand( + uri, arguments, headers, new SetLowQualityFrame( + GetSharedObserver(), sopInstanceUid, frame, + defaultWindowingCenter_, defaultWindowingWidth_, isMonochrome1, isPrefetch))); + + { + std::unique_ptr<OrthancStone::ILoadersContext::ILock> lock(context_.Lock()); + lock->Schedule(GetSharedObserver(), priority, command.release()); + } + } + } + + ViewerViewport(OrthancStone::ILoadersContext& context, + const OrthancStone::DicomSource& source, + const std::string& canvas, + boost::shared_ptr<FramesCache> cache) : + context_(context), + source_(source), + viewport_(OrthancStone::WebGLViewport::Create(canvas)), + cache_(cache), + fitNextContent_(true), + isCtrlDown_(false) + { + if (!cache_) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); + } + + emscripten_set_wheel_callback(viewport_->GetCanvasCssSelector().c_str(), this, true, OnWheel); + emscripten_set_keydown_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, this, false, OnKey); + emscripten_set_keyup_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, this, false, OnKey); + + ResetDefaultWindowing(); + } + + static EM_BOOL OnKey(int eventType, + const EmscriptenKeyboardEvent *event, + void *userData) + { + /** + * WARNING: There is a problem with Firefox 71 that seems to mess + * the "ctrlKey" value. + **/ + + ViewerViewport& that = *reinterpret_cast<ViewerViewport*>(userData); + that.isCtrlDown_ = event->ctrlKey; + return false; + } + + + static EM_BOOL OnWheel(int eventType, + const EmscriptenWheelEvent *wheelEvent, + void *userData) + { + ViewerViewport& that = *reinterpret_cast<ViewerViewport*>(userData); + + if (that.cursor_.get() != NULL) + { + if (wheelEvent->deltaY < 0) + { + that.ChangeFrame(that.isCtrlDown_ ? SeriesCursor::Action_FastMinus : SeriesCursor::Action_Minus); + } + else if (wheelEvent->deltaY > 0) + { + that.ChangeFrame(that.isCtrlDown_ ? SeriesCursor::Action_FastPlus : SeriesCursor::Action_Plus); + } + } + + return true; + } + + void Handle(const OrthancStone::DicomResourcesLoader::SuccessMessage& message) + { + dynamic_cast<const ICommand&>(message.GetUserPayload()).Handle(message); + } + + void Handle(const OrthancStone::HttpCommand::SuccessMessage& message) + { + dynamic_cast<const ICommand&>(message.GetOrigin().GetPayload()).Handle(message); + } + + void Handle(const OrthancStone::ParseDicomSuccessMessage& message) + { + dynamic_cast<const ICommand&>(message.GetOrigin().GetPayload()).Handle(message); + } + +public: + static boost::shared_ptr<ViewerViewport> Create(OrthancStone::ILoadersContext::ILock& lock, + const OrthancStone::DicomSource& source, + const std::string& canvas, + boost::shared_ptr<FramesCache> cache) + { + boost::shared_ptr<ViewerViewport> viewport( + new ViewerViewport(lock.GetContext(), source, canvas, cache)); + + viewport->loader_ = OrthancStone::DicomResourcesLoader::Create(lock); + viewport->Register<OrthancStone::DicomResourcesLoader::SuccessMessage>( + *viewport->loader_, &ViewerViewport::Handle); + + viewport->Register<OrthancStone::HttpCommand::SuccessMessage>( + lock.GetOracleObservable(), &ViewerViewport::Handle); + + viewport->Register<OrthancStone::ParseDicomSuccessMessage>( + lock.GetOracleObservable(), &ViewerViewport::Handle); + + return viewport; + } + + void SetFrames(OrthancStone::SortedFrames* frames) + { + if (frames == NULL) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); + } + + fitNextContent_ = true; + + frames_.reset(frames); + cursor_.reset(new SeriesCursor(frames_->GetFramesCount())); + + LOG(INFO) << "Number of frames in series: " << frames_->GetFramesCount(); + + ResetDefaultWindowing(); + ClearViewport(); + prefetchQueue_.clear(); + currentFrameGeometry_ = FrameGeometry(); + + if (observer_.get() != NULL) + { + observer_->SignalFrameUpdated(*this, cursor_->GetCurrentIndex(), + frames_->GetFramesCount(), DisplayedFrameQuality_None); + } + + if (frames_->GetFramesCount() != 0) + { + const std::string& sopInstanceUid = frames_->GetFrameSopInstanceUid(cursor_->GetCurrentIndex()); + + { + // Fetch the default windowing for the central instance + const std::string uri = ("studies/" + frames_->GetStudyInstanceUid() + + "/series/" + frames_->GetSeriesInstanceUid() + + "/instances/" + sopInstanceUid + "/metadata"); + + loader_->ScheduleGetDicomWeb( + boost::make_shared<OrthancStone::LoadedDicomResources>(Orthanc::DICOM_TAG_SOP_INSTANCE_UID), + 0, source_, uri, new SetDefaultWindowingCommand(GetSharedObserver())); + } + } + } + + // This method is used when the layout of the HTML page changes, + // which does not trigger the "emscripten_set_resize_callback()" + void UpdateSize(bool fitContent) + { + std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); + lock->GetCompositor().RefreshCanvasSize(); + + if (fitContent) + { + lock->GetCompositor().FitContent(lock->GetController().GetScene()); + } + + lock->Invalidate(); + } + + void AcquireObserver(IObserver* observer) + { + observer_.reset(observer); + } + + const std::string& GetCanvasId() const + { + assert(viewport_); + return viewport_->GetCanvasId(); + } + + void ChangeFrame(SeriesCursor::Action action) + { + if (cursor_.get() != NULL) + { + size_t previous = cursor_->GetCurrentIndex(); + + cursor_->Apply(action); + + size_t current = cursor_->GetCurrentIndex(); + if (previous != current) + { + DisplayCurrentFrame(); + } + } + } + + const FrameGeometry& GetCurrentFrameGeometry() const + { + return currentFrameGeometry_; + } + + void UpdateReferenceLines(const std::list<const FrameGeometry*>& planes) + { + std::unique_ptr<OrthancStone::PolylineSceneLayer> layer(new OrthancStone::PolylineSceneLayer); + + if (GetCurrentFrameGeometry().IsValid()) + { + for (std::list<const FrameGeometry*>::const_iterator + it = planes.begin(); it != planes.end(); ++it) + { + assert(*it != NULL); + + double x1, y1, x2, y2; + if (GetCurrentFrameGeometry().Intersect(x1, y1, x2, y2, **it)) + { + OrthancStone::PolylineSceneLayer::Chain chain; + chain.push_back(OrthancStone::ScenePoint2D(x1, y1)); + chain.push_back(OrthancStone::ScenePoint2D(x2, y2)); + layer->AddChain(chain, false, 0, 255, 0); + } + } + } + + { + std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); + + if (layer->GetChainsCount() == 0) + { + lock->GetController().GetScene().DeleteLayer(LAYER_REFERENCE_LINES); + } + else + { + lock->GetController().GetScene().SetLayer(LAYER_REFERENCE_LINES, layer.release()); + } + + //lock->GetCompositor().Refresh(lock->GetController().GetScene()); + lock->Invalidate(); + } + } + + + void ClearReferenceLines() + { + { + std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); + lock->GetController().GetScene().DeleteLayer(LAYER_REFERENCE_LINES); + lock->Invalidate(); + } + } + + + void SetDefaultWindowing() + { + SetWindowing(defaultWindowingCenter_, defaultWindowingWidth_); + } + + void SetWindowing(float windowingCenter, + float windowingWidth) + { + windowingCenter_ = windowingCenter; + windowingWidth_ = windowingWidth; + + { + std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); + + if (lock->GetController().GetScene().HasLayer(LAYER_TEXTURE) && + lock->GetController().GetScene().GetLayer(LAYER_TEXTURE).GetType() == + OrthancStone::ISceneLayer::Type_FloatTexture) + { + dynamic_cast<OrthancStone::FloatTextureSceneLayer&>( + lock->GetController().GetScene().GetLayer(LAYER_TEXTURE)). + SetCustomWindowing(windowingCenter_, windowingWidth_); + lock->Invalidate(); + } + } + } + + void Invert() + { + inverted_ = !inverted_; + + { + std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); + + if (lock->GetController().GetScene().HasLayer(LAYER_TEXTURE) && + lock->GetController().GetScene().GetLayer(LAYER_TEXTURE).GetType() == + OrthancStone::ISceneLayer::Type_FloatTexture) + { + OrthancStone::FloatTextureSceneLayer& layer = + dynamic_cast<OrthancStone::FloatTextureSceneLayer&>( + lock->GetController().GetScene().GetLayer(LAYER_TEXTURE)); + + // NB: Using "IsInverted()" instead of "inverted_" is for + // compatibility with MONOCHROME1 images + layer.SetInverted(!layer.IsInverted()); + lock->Invalidate(); + } + } + } +}; + + + + + +typedef std::map<std::string, boost::shared_ptr<ViewerViewport> > Viewports; +static Viewports allViewports_; +static bool showReferenceLines_ = true; + + +static void UpdateReferenceLines() +{ + if (showReferenceLines_) + { + std::list<const FrameGeometry*> planes; + + for (Viewports::const_iterator it = allViewports_.begin(); it != allViewports_.end(); ++it) + { + assert(it->second != NULL); + planes.push_back(&it->second->GetCurrentFrameGeometry()); + } + + for (Viewports::iterator it = allViewports_.begin(); it != allViewports_.end(); ++it) + { + assert(it->second != NULL); + it->second->UpdateReferenceLines(planes); + } + } + else + { + for (Viewports::iterator it = allViewports_.begin(); it != allViewports_.end(); ++it) + { + assert(it->second != NULL); + it->second->ClearReferenceLines(); + } + } +} + + +class WebAssemblyObserver : public ResourcesLoader::IObserver, + public ViewerViewport::IObserver +{ +public: + virtual void SignalResourcesLoaded() ORTHANC_OVERRIDE + { + DISPATCH_JAVASCRIPT_EVENT("ResourcesLoaded"); + } + + virtual void SignalSeriesThumbnailLoaded(const std::string& studyInstanceUid, + const std::string& seriesInstanceUid) ORTHANC_OVERRIDE + { + EM_ASM({ + const customEvent = document.createEvent("CustomEvent"); + customEvent.initCustomEvent("ThumbnailLoaded", false, false, + { "studyInstanceUid" : UTF8ToString($0), + "seriesInstanceUid" : UTF8ToString($1) }); + window.dispatchEvent(customEvent); + }, + studyInstanceUid.c_str(), + seriesInstanceUid.c_str()); + } + + virtual void SignalSeriesMetadataLoaded(const std::string& studyInstanceUid, + const std::string& seriesInstanceUid) ORTHANC_OVERRIDE + { + EM_ASM({ + const customEvent = document.createEvent("CustomEvent"); + customEvent.initCustomEvent("MetadataLoaded", false, false, + { "studyInstanceUid" : UTF8ToString($0), + "seriesInstanceUid" : UTF8ToString($1) }); + window.dispatchEvent(customEvent); + }, + studyInstanceUid.c_str(), + seriesInstanceUid.c_str()); + } + + virtual void SignalFrameUpdated(const ViewerViewport& viewport, + size_t currentFrame, + size_t countFrames, + DisplayedFrameQuality quality) ORTHANC_OVERRIDE + { + EM_ASM({ + const customEvent = document.createEvent("CustomEvent"); + customEvent.initCustomEvent("FrameUpdated", false, false, + { "canvasId" : UTF8ToString($0), + "currentFrame" : $1, + "framesCount" : $2, + "quality" : $3 }); + window.dispatchEvent(customEvent); + }, + viewport.GetCanvasId().c_str(), + static_cast<int>(currentFrame), + static_cast<int>(countFrames), + quality); + + + UpdateReferenceLines(); + }; +}; + + + +static OrthancStone::DicomSource source_; +static boost::shared_ptr<FramesCache> cache_; +static boost::shared_ptr<OrthancStone::WebAssemblyLoadersContext> context_; +static std::string stringBuffer_; + + + +static void FormatTags(std::string& target, + const Orthanc::DicomMap& tags) +{ + Orthanc::DicomArray arr(tags); + Json::Value v = Json::objectValue; + + for (size_t i = 0; i < arr.GetSize(); i++) + { + const Orthanc::DicomElement& element = arr.GetElement(i); + if (!element.GetValue().IsBinary() && + !element.GetValue().IsNull()) + { + v[element.GetTag().Format()] = element.GetValue().GetContent(); + } + } + + target = v.toStyledString(); +} + + +static ResourcesLoader& GetResourcesLoader() +{ + static boost::shared_ptr<ResourcesLoader> resourcesLoader_; + + if (!resourcesLoader_) + { + std::unique_ptr<OrthancStone::ILoadersContext::ILock> lock(context_->Lock()); + resourcesLoader_ = ResourcesLoader::Create(*lock, source_); + resourcesLoader_->AcquireObserver(new WebAssemblyObserver); + } + + return *resourcesLoader_; +} + + +static boost::shared_ptr<ViewerViewport> GetViewport(const std::string& canvas) +{ + Viewports::iterator found = allViewports_.find(canvas); + if (found == allViewports_.end()) + { + std::unique_ptr<OrthancStone::ILoadersContext::ILock> lock(context_->Lock()); + boost::shared_ptr<ViewerViewport> viewport(ViewerViewport::Create(*lock, source_, canvas, cache_)); + viewport->AcquireObserver(new WebAssemblyObserver); + allViewports_[canvas] = viewport; + return viewport; + } + else + { + return found->second; + } +} + + +extern "C" +{ + int main(int argc, char const *argv[]) + { + printf("OK\n"); + Orthanc::InitializeFramework("", true); + Orthanc::Logging::EnableInfoLevel(true); + //Orthanc::Logging::EnableTraceLevel(true); + + context_.reset(new OrthancStone::WebAssemblyLoadersContext(1, 4, 1)); + cache_.reset(new FramesCache); + + DISPATCH_JAVASCRIPT_EVENT("StoneInitialized"); + } + + + EMSCRIPTEN_KEEPALIVE + void SetOrthancRoot(const char* uri, + int useRendered) + { + try + { + context_->SetLocalOrthanc(uri); // For "source_.SetDicomWebThroughOrthancSource()" + source_.SetDicomWebSource(std::string(uri) + "/dicom-web"); + source_.SetDicomWebRendered(useRendered != 0); + } + EXTERN_CATCH_EXCEPTIONS; + } + + + EMSCRIPTEN_KEEPALIVE + void SetDicomWebServer(const char* serverName, + int hasRendered) + { + try + { + source_.SetDicomWebThroughOrthancSource(serverName); + source_.SetDicomWebRendered(hasRendered != 0); + } + EXTERN_CATCH_EXCEPTIONS; + } + + + EMSCRIPTEN_KEEPALIVE + void FetchAllStudies() + { + try + { + GetResourcesLoader().FetchAllStudies(); + } + EXTERN_CATCH_EXCEPTIONS; + } + + EMSCRIPTEN_KEEPALIVE + void FetchStudy(const char* studyInstanceUid) + { + try + { + GetResourcesLoader().FetchStudy(studyInstanceUid); + } + EXTERN_CATCH_EXCEPTIONS; + } + + EMSCRIPTEN_KEEPALIVE + void FetchSeries(const char* studyInstanceUid, + const char* seriesInstanceUid) + { + try + { + GetResourcesLoader().FetchSeries(studyInstanceUid, seriesInstanceUid); + } + EXTERN_CATCH_EXCEPTIONS; + } + + EMSCRIPTEN_KEEPALIVE + int GetStudiesCount() + { + try + { + return GetResourcesLoader().GetStudiesCount(); + } + EXTERN_CATCH_EXCEPTIONS; + return 0; // on exception + } + + EMSCRIPTEN_KEEPALIVE + int GetSeriesCount() + { + try + { + return GetResourcesLoader().GetSeriesCount(); + } + EXTERN_CATCH_EXCEPTIONS; + return 0; // on exception + } + + + EMSCRIPTEN_KEEPALIVE + const char* GetStringBuffer() + { + return stringBuffer_.c_str(); + } + + + EMSCRIPTEN_KEEPALIVE + void LoadStudyTags(int i) + { + try + { + if (i < 0) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); + } + + Orthanc::DicomMap dicom; + GetResourcesLoader().GetStudy(dicom, i); + FormatTags(stringBuffer_, dicom); + } + EXTERN_CATCH_EXCEPTIONS; + } + + + EMSCRIPTEN_KEEPALIVE + void LoadSeriesTags(int i) + { + try + { + if (i < 0) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); + } + + Orthanc::DicomMap dicom; + GetResourcesLoader().GetSeries(dicom, i); + FormatTags(stringBuffer_, dicom); + } + EXTERN_CATCH_EXCEPTIONS; + } + + + EMSCRIPTEN_KEEPALIVE + int LoadSeriesThumbnail(const char* seriesInstanceUid) + { + try + { + std::string image, mime; + switch (GetResourcesLoader().GetSeriesThumbnail(image, mime, seriesInstanceUid)) + { + case OrthancStone::SeriesThumbnailType_Image: + Orthanc::Toolbox::EncodeDataUriScheme(stringBuffer_, mime, image); + return ThumbnailType_Image; + + case OrthancStone::SeriesThumbnailType_Pdf: + return ThumbnailType_Pdf; + + case OrthancStone::SeriesThumbnailType_Video: + return ThumbnailType_Video; + + case OrthancStone::SeriesThumbnailType_NotLoaded: + return ThumbnailType_Loading; + + case OrthancStone::SeriesThumbnailType_Unsupported: + return ThumbnailType_NoPreview; + + default: + return ThumbnailType_Unknown; + } + } + EXTERN_CATCH_EXCEPTIONS; + return ThumbnailType_Unknown; + } + + + EMSCRIPTEN_KEEPALIVE + void SpeedUpFetchSeriesMetadata(const char* studyInstanceUid, + const char* seriesInstanceUid) + { + try + { + GetResourcesLoader().FetchSeriesMetadata(PRIORITY_HIGH, studyInstanceUid, seriesInstanceUid); + } + EXTERN_CATCH_EXCEPTIONS; + } + + + EMSCRIPTEN_KEEPALIVE + int IsSeriesComplete(const char* seriesInstanceUid) + { + try + { + return GetResourcesLoader().IsSeriesComplete(seriesInstanceUid) ? 1 : 0; + } + EXTERN_CATCH_EXCEPTIONS; + return 0; + } + + EMSCRIPTEN_KEEPALIVE + int LoadSeriesInViewport(const char* canvas, + const char* seriesInstanceUid) + { + try + { + std::unique_ptr<OrthancStone::SortedFrames> frames(new OrthancStone::SortedFrames); + + if (GetResourcesLoader().SortSeriesFrames(*frames, seriesInstanceUid)) + { + GetViewport(canvas)->SetFrames(frames.release()); + return 1; + } + else + { + return 0; + } + } + EXTERN_CATCH_EXCEPTIONS; + return 0; + } + + + EMSCRIPTEN_KEEPALIVE + void AllViewportsUpdateSize(int fitContent) + { + try + { + for (Viewports::iterator it = allViewports_.begin(); it != allViewports_.end(); ++it) + { + assert(it->second != NULL); + it->second->UpdateSize(fitContent != 0); + } + } + EXTERN_CATCH_EXCEPTIONS; + } + + + EMSCRIPTEN_KEEPALIVE + void DecrementFrame(const char* canvas, + int fitContent) + { + try + { + GetViewport(canvas)->ChangeFrame(SeriesCursor::Action_Minus); + } + EXTERN_CATCH_EXCEPTIONS; + } + + + EMSCRIPTEN_KEEPALIVE + void IncrementFrame(const char* canvas, + int fitContent) + { + try + { + GetViewport(canvas)->ChangeFrame(SeriesCursor::Action_Plus); + } + EXTERN_CATCH_EXCEPTIONS; + } + + + EMSCRIPTEN_KEEPALIVE + void ShowReferenceLines(int show) + { + try + { + showReferenceLines_ = (show != 0); + UpdateReferenceLines(); + } + EXTERN_CATCH_EXCEPTIONS; + } + + + EMSCRIPTEN_KEEPALIVE + void SetDefaultWindowing(const char* canvas) + { + try + { + GetViewport(canvas)->SetDefaultWindowing(); + } + EXTERN_CATCH_EXCEPTIONS; + } + + + EMSCRIPTEN_KEEPALIVE + void SetWindowing(const char* canvas, + int center, + int width) + { + try + { + GetViewport(canvas)->SetWindowing(center, width); + } + EXTERN_CATCH_EXCEPTIONS; + } + + + EMSCRIPTEN_KEEPALIVE + void InvertContrast(const char* canvas) + { + try + { + GetViewport(canvas)->Invert(); + } + EXTERN_CATCH_EXCEPTIONS; + } +}
--- a/StoneWebViewer/WebAssembly/Test.cpp Tue Jul 07 20:52:35 2020 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,2246 +0,0 @@ -/** - * Stone of Orthanc - * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics - * Department, University Hospital of Liege, Belgium - * Copyright (C) 2017-2020 Osimis S.A., 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 <emscripten.h> - - -#define DISPATCH_JAVASCRIPT_EVENT(name) \ - EM_ASM( \ - const customEvent = document.createEvent("CustomEvent"); \ - customEvent.initCustomEvent(name, false, false, undefined); \ - window.dispatchEvent(customEvent); \ - ); - - -#define EXTERN_CATCH_EXCEPTIONS \ - catch (Orthanc::OrthancException& e) \ - { \ - LOG(ERROR) << "OrthancException: " << e.What(); \ - DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ - } \ - catch (OrthancStone::StoneException& e) \ - { \ - LOG(ERROR) << "StoneException: " << e.What(); \ - DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ - } \ - catch (std::exception& e) \ - { \ - LOG(ERROR) << "Runtime error: " << e.what(); \ - DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ - } \ - catch (...) \ - { \ - LOG(ERROR) << "Native exception"; \ - DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ - } - - -#include <Cache/MemoryObjectCache.h> -#include <DicomFormat/DicomArray.h> -#include <DicomParsing/Internals/DicomImageDecoder.h> -#include <Images/Image.h> -#include <Images/ImageProcessing.h> -#include <Images/JpegReader.h> -#include <Logging.h> - -#include "../../OrthancStone/Sources/Loaders/DicomResourcesLoader.h" -#include "../../OrthancStone/Sources/Loaders/SeriesMetadataLoader.h" -#include "../../OrthancStone/Sources/Loaders/SeriesThumbnailsLoader.h" -#include "../../OrthancStone/Sources/Loaders/WebAssemblyLoadersContext.h" -#include "../../OrthancStone/Sources/Messages/ObserverBase.h" -#include "../../OrthancStone/Sources/Oracle/ParseDicomFromWadoCommand.h" -#include "../../OrthancStone/Sources/Scene2D/ColorTextureSceneLayer.h" -#include "../../OrthancStone/Sources/Scene2D/FloatTextureSceneLayer.h" -#include "../../OrthancStone/Sources/Scene2D/PolylineSceneLayer.h" -#include "../../OrthancStone/Sources/StoneException.h" -#include "../../OrthancStone/Sources/Toolbox/DicomInstanceParameters.h" -#include "../../OrthancStone/Sources/Toolbox/GeometryToolbox.h" -#include "../../OrthancStone/Sources/Toolbox/SortedFrames.h" -#include "../../OrthancStone/Sources/Viewport/WebGLViewport.h" - -#include <boost/make_shared.hpp> -#include <stdio.h> - - -enum EMSCRIPTEN_KEEPALIVE ThumbnailType -{ - ThumbnailType_Image, - ThumbnailType_NoPreview, - ThumbnailType_Pdf, - ThumbnailType_Video, - ThumbnailType_Loading, - ThumbnailType_Unknown -}; - - -enum EMSCRIPTEN_KEEPALIVE DisplayedFrameQuality -{ -DisplayedFrameQuality_None, - DisplayedFrameQuality_Low, - DisplayedFrameQuality_High - }; - - - -static const int PRIORITY_HIGH = -100; -static const int PRIORITY_LOW = 100; -static const int PRIORITY_NORMAL = 0; - -static const unsigned int QUALITY_JPEG = 0; -static const unsigned int QUALITY_FULL = 1; - -class ResourcesLoader : public OrthancStone::ObserverBase<ResourcesLoader> -{ -public: - class IObserver : public boost::noncopyable - { - public: - virtual ~IObserver() - { - } - - virtual void SignalResourcesLoaded() = 0; - - virtual void SignalSeriesThumbnailLoaded(const std::string& studyInstanceUid, - const std::string& seriesInstanceUid) = 0; - - virtual void SignalSeriesMetadataLoaded(const std::string& studyInstanceUid, - const std::string& seriesInstanceUid) = 0; - }; - -private: - std::unique_ptr<IObserver> observer_; - OrthancStone::DicomSource source_; - size_t pending_; - boost::shared_ptr<OrthancStone::LoadedDicomResources> studies_; - boost::shared_ptr<OrthancStone::LoadedDicomResources> series_; - boost::shared_ptr<OrthancStone::DicomResourcesLoader> resourcesLoader_; - boost::shared_ptr<OrthancStone::SeriesThumbnailsLoader> thumbnailsLoader_; - boost::shared_ptr<OrthancStone::SeriesMetadataLoader> metadataLoader_; - - ResourcesLoader(const OrthancStone::DicomSource& source) : - source_(source), - pending_(0), - studies_(new OrthancStone::LoadedDicomResources(Orthanc::DICOM_TAG_STUDY_INSTANCE_UID)), - series_(new OrthancStone::LoadedDicomResources(Orthanc::DICOM_TAG_SERIES_INSTANCE_UID)) - { - } - - void Handle(const OrthancStone::DicomResourcesLoader::SuccessMessage& message) - { - const Orthanc::SingleValueObject<Orthanc::ResourceType>& payload = - dynamic_cast<const Orthanc::SingleValueObject<Orthanc::ResourceType>&>(message.GetUserPayload()); - - OrthancStone::LoadedDicomResources& dicom = *message.GetResources(); - - LOG(INFO) << "resources loaded: " << dicom.GetSize() - << ", " << Orthanc::EnumerationToString(payload.GetValue()); - - if (payload.GetValue() == Orthanc::ResourceType_Series) - { - for (size_t i = 0; i < dicom.GetSize(); i++) - { - std::string studyInstanceUid, seriesInstanceUid; - if (dicom.GetResource(i).LookupStringValue( - studyInstanceUid, Orthanc::DICOM_TAG_STUDY_INSTANCE_UID, false) && - dicom.GetResource(i).LookupStringValue( - seriesInstanceUid, Orthanc::DICOM_TAG_SERIES_INSTANCE_UID, false)) - { - thumbnailsLoader_->ScheduleLoadThumbnail(source_, "", studyInstanceUid, seriesInstanceUid); - metadataLoader_->ScheduleLoadSeries(PRIORITY_LOW + 1, source_, studyInstanceUid, seriesInstanceUid); - } - } - } - - if (pending_ == 0) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); - } - else - { - pending_ --; - if (pending_ == 0 && - observer_.get() != NULL) - { - observer_->SignalResourcesLoaded(); - } - } - } - - void Handle(const OrthancStone::SeriesThumbnailsLoader::SuccessMessage& message) - { - if (observer_.get() != NULL) - { - observer_->SignalSeriesThumbnailLoaded( - message.GetStudyInstanceUid(), message.GetSeriesInstanceUid()); - } - } - - void Handle(const OrthancStone::SeriesMetadataLoader::SuccessMessage& message) - { - if (observer_.get() != NULL) - { - observer_->SignalSeriesMetadataLoaded( - message.GetStudyInstanceUid(), message.GetSeriesInstanceUid()); - } - } - - void FetchInternal(const std::string& studyInstanceUid, - const std::string& seriesInstanceUid) - { - // Firstly, load the study - Orthanc::DicomMap filter; - filter.SetValue(Orthanc::DICOM_TAG_STUDY_INSTANCE_UID, studyInstanceUid, false); - - std::set<Orthanc::DicomTag> tags; - tags.insert(Orthanc::DICOM_TAG_STUDY_DESCRIPTION); // Necessary for Orthanc DICOMweb plugin - - resourcesLoader_->ScheduleQido( - studies_, PRIORITY_HIGH, source_, Orthanc::ResourceType_Study, filter, tags, - new Orthanc::SingleValueObject<Orthanc::ResourceType>(Orthanc::ResourceType_Study)); - - // Secondly, load the series - if (!seriesInstanceUid.empty()) - { - filter.SetValue(Orthanc::DICOM_TAG_SERIES_INSTANCE_UID, seriesInstanceUid, false); - } - - tags.insert(Orthanc::DICOM_TAG_SERIES_NUMBER); // Necessary for Google Cloud Platform - - resourcesLoader_->ScheduleQido( - series_, PRIORITY_HIGH, source_, Orthanc::ResourceType_Series, filter, tags, - new Orthanc::SingleValueObject<Orthanc::ResourceType>(Orthanc::ResourceType_Series)); - - pending_ += 2; - } - -public: - static boost::shared_ptr<ResourcesLoader> Create(OrthancStone::ILoadersContext::ILock& lock, - const OrthancStone::DicomSource& source) - { - boost::shared_ptr<ResourcesLoader> loader(new ResourcesLoader(source)); - - loader->resourcesLoader_ = OrthancStone::DicomResourcesLoader::Create(lock); - loader->thumbnailsLoader_ = OrthancStone::SeriesThumbnailsLoader::Create(lock, PRIORITY_LOW); - loader->metadataLoader_ = OrthancStone::SeriesMetadataLoader::Create(lock); - - loader->Register<OrthancStone::DicomResourcesLoader::SuccessMessage>( - *loader->resourcesLoader_, &ResourcesLoader::Handle); - - loader->Register<OrthancStone::SeriesThumbnailsLoader::SuccessMessage>( - *loader->thumbnailsLoader_, &ResourcesLoader::Handle); - - loader->Register<OrthancStone::SeriesMetadataLoader::SuccessMessage>( - *loader->metadataLoader_, &ResourcesLoader::Handle); - - return loader; - } - - void FetchAllStudies() - { - FetchInternal("", ""); - } - - void FetchStudy(const std::string& studyInstanceUid) - { - FetchInternal(studyInstanceUid, ""); - } - - void FetchSeries(const std::string& studyInstanceUid, - const std::string& seriesInstanceUid) - { - FetchInternal(studyInstanceUid, seriesInstanceUid); - } - - size_t GetStudiesCount() const - { - return studies_->GetSize(); - } - - size_t GetSeriesCount() const - { - return series_->GetSize(); - } - - void GetStudy(Orthanc::DicomMap& target, - size_t i) - { - target.Assign(studies_->GetResource(i)); - } - - void GetSeries(Orthanc::DicomMap& target, - size_t i) - { - target.Assign(series_->GetResource(i)); - - // Complement with the study-level tags - std::string studyInstanceUid; - if (target.LookupStringValue(studyInstanceUid, Orthanc::DICOM_TAG_STUDY_INSTANCE_UID, false) && - studies_->HasResource(studyInstanceUid)) - { - studies_->MergeResource(target, studyInstanceUid); - } - } - - OrthancStone::SeriesThumbnailType GetSeriesThumbnail(std::string& image, - std::string& mime, - const std::string& seriesInstanceUid) - { - return thumbnailsLoader_->GetSeriesThumbnail(image, mime, seriesInstanceUid); - } - - void FetchSeriesMetadata(int priority, - const std::string& studyInstanceUid, - const std::string& seriesInstanceUid) - { - metadataLoader_->ScheduleLoadSeries(priority, source_, studyInstanceUid, seriesInstanceUid); - } - - bool IsSeriesComplete(const std::string& seriesInstanceUid) - { - OrthancStone::SeriesMetadataLoader::Accessor accessor(*metadataLoader_, seriesInstanceUid); - return accessor.IsComplete(); - } - - bool SortSeriesFrames(OrthancStone::SortedFrames& target, - const std::string& seriesInstanceUid) - { - OrthancStone::SeriesMetadataLoader::Accessor accessor(*metadataLoader_, seriesInstanceUid); - - if (accessor.IsComplete()) - { - target.Clear(); - - for (size_t i = 0; i < accessor.GetInstancesCount(); i++) - { - target.AddInstance(accessor.GetInstance(i)); - } - - target.Sort(); - - return true; - } - else - { - return false; - } - } - - void AcquireObserver(IObserver* observer) - { - observer_.reset(observer); - } -}; - - - -class FramesCache : public boost::noncopyable -{ -private: - class CachedImage : public Orthanc::ICacheable - { - private: - std::unique_ptr<Orthanc::ImageAccessor> image_; - unsigned int quality_; - - public: - CachedImage(Orthanc::ImageAccessor* image, - unsigned int quality) : - image_(image), - quality_(quality) - { - assert(image != NULL); - } - - virtual size_t GetMemoryUsage() const - { - assert(image_.get() != NULL); - return (image_->GetBytesPerPixel() * image_->GetPitch() * image_->GetHeight()); - } - - const Orthanc::ImageAccessor& GetImage() const - { - assert(image_.get() != NULL); - return *image_; - } - - unsigned int GetQuality() const - { - return quality_; - } - }; - - - static std::string GetKey(const std::string& sopInstanceUid, - size_t frameIndex) - { - return sopInstanceUid + "|" + boost::lexical_cast<std::string>(frameIndex); - } - - - Orthanc::MemoryObjectCache cache_; - -public: - FramesCache() - { - SetMaximumSize(100 * 1024 * 1024); // 100 MB - } - - size_t GetMaximumSize() - { - return cache_.GetMaximumSize(); - } - - void SetMaximumSize(size_t size) - { - cache_.SetMaximumSize(size); - } - - /** - * Returns "true" iff the provided image has better quality than the - * previously cached one, or if no cache was previously available. - **/ - bool Acquire(const std::string& sopInstanceUid, - size_t frameIndex, - Orthanc::ImageAccessor* image /* transfer ownership */, - unsigned int quality) - { - std::unique_ptr<Orthanc::ImageAccessor> protection(image); - - if (image == NULL) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); - } - else if (image->GetFormat() != Orthanc::PixelFormat_Float32 && - image->GetFormat() != Orthanc::PixelFormat_RGB24) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); - } - - const std::string& key = GetKey(sopInstanceUid, frameIndex); - - bool invalidate = false; - - { - /** - * Access the previous cached entry, with side effect of tagging - * it as the most recently accessed frame (update of LRU recycling) - **/ - Orthanc::MemoryObjectCache::Accessor accessor(cache_, key, false /* unique lock */); - - if (accessor.IsValid()) - { - const CachedImage& previous = dynamic_cast<const CachedImage&>(accessor.GetValue()); - - // There is already a cached image for this frame - if (previous.GetQuality() < quality) - { - // The previously stored image has poorer quality - invalidate = true; - } - else - { - // No update in the quality, don't change the cache - return false; - } - } - else - { - invalidate = false; - } - } - - if (invalidate) - { - cache_.Invalidate(key); - } - - cache_.Acquire(key, new CachedImage(protection.release(), quality)); - return true; - } - - class Accessor : public boost::noncopyable - { - private: - Orthanc::MemoryObjectCache::Accessor accessor_; - - const CachedImage& GetCachedImage() const - { - if (IsValid()) - { - return dynamic_cast<CachedImage&>(accessor_.GetValue()); - } - else - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); - } - } - - public: - Accessor(FramesCache& that, - const std::string& sopInstanceUid, - size_t frameIndex) : - accessor_(that.cache_, GetKey(sopInstanceUid, frameIndex), false /* shared lock */) - { - } - - bool IsValid() const - { - return accessor_.IsValid(); - } - - const Orthanc::ImageAccessor& GetImage() const - { - return GetCachedImage().GetImage(); - } - - unsigned int GetQuality() const - { - return GetCachedImage().GetQuality(); - } - }; -}; - - - -class SeriesCursor : public boost::noncopyable -{ -public: - enum Action - { - Action_FastPlus, - Action_Plus, - Action_None, - Action_Minus, - Action_FastMinus - }; - -private: - std::vector<size_t> prefetch_; - int framesCount_; - int currentFrame_; - bool isCircular_; - int fastDelta_; - Action lastAction_; - - int ComputeNextFrame(int currentFrame, - Action action) const - { - if (framesCount_ == 0) - { - assert(currentFrame == 0); - return 0; - } - - int nextFrame = currentFrame; - - switch (action) - { - case Action_FastPlus: - nextFrame += fastDelta_; - break; - - case Action_Plus: - nextFrame += 1; - break; - - case Action_None: - break; - - case Action_Minus: - nextFrame -= 1; - break; - - case Action_FastMinus: - nextFrame -= fastDelta_; - break; - - default: - throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); - } - - if (isCircular_) - { - while (nextFrame < 0) - { - nextFrame += framesCount_; - } - - while (nextFrame >= framesCount_) - { - nextFrame -= framesCount_; - } - } - else - { - if (nextFrame < 0) - { - nextFrame = 0; - } - else if (nextFrame >= framesCount_) - { - nextFrame = framesCount_ - 1; - } - } - - return nextFrame; - } - - void UpdatePrefetch() - { - /** - * This method will order the frames of the series according to - * the number of "actions" (i.e. mouse wheels) that are necessary - * to reach them, starting from the current frame. It is assumed - * that once one action is done, it is more likely that the user - * will do the same action just afterwards. - **/ - - prefetch_.clear(); - - if (framesCount_ == 0) - { - return; - } - - prefetch_.reserve(framesCount_); - - // Breadth-first search using a FIFO. The queue associates a frame - // and the action that is the most likely in this frame - typedef std::list< std::pair<int, Action> > Queue; - - Queue queue; - std::set<int> visited; // Frames that have already been visited - - queue.push_back(std::make_pair(currentFrame_, lastAction_)); - - while (!queue.empty()) - { - int frame = queue.front().first; - Action previousAction = queue.front().second; - queue.pop_front(); - - if (visited.find(frame) == visited.end()) - { - visited.insert(frame); - prefetch_.push_back(frame); - - switch (previousAction) - { - case Action_None: - case Action_Plus: - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Plus), Action_Plus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Minus), Action_Minus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastPlus), Action_FastPlus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastMinus), Action_FastMinus)); - break; - - case Action_Minus: - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Minus), Action_Minus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Plus), Action_Plus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastMinus), Action_FastMinus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastPlus), Action_FastPlus)); - break; - - case Action_FastPlus: - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastPlus), Action_FastPlus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastMinus), Action_FastMinus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Plus), Action_Plus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Minus), Action_Minus)); - break; - - case Action_FastMinus: - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastMinus), Action_FastMinus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_FastPlus), Action_FastPlus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Minus), Action_Minus)); - queue.push_back(std::make_pair(ComputeNextFrame(frame, Action_Plus), Action_Plus)); - break; - - default: - throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); - } - } - } - - assert(prefetch_.size() == framesCount_); - } - - bool CheckFrameIndex(int frame) const - { - return ((framesCount_ == 0 && frame == 0) || - (framesCount_ > 0 && frame >= 0 && frame < framesCount_)); - } - -public: - SeriesCursor(size_t framesCount) : - framesCount_(framesCount), - currentFrame_(framesCount / 2), // Start at the middle frame - isCircular_(false), - lastAction_(Action_None) - { - SetFastDelta(framesCount / 20); - UpdatePrefetch(); - } - - void SetCircular(bool isCircular) - { - isCircular_ = isCircular; - UpdatePrefetch(); - } - - void SetFastDelta(int delta) - { - fastDelta_ = (delta < 0 ? -delta : delta); - - if (fastDelta_ <= 0) - { - fastDelta_ = 1; - } - } - - void SetCurrentIndex(size_t frame) - { - if (frame >= framesCount_) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); - } - else - { - currentFrame_ = frame; - lastAction_ = Action_None; - UpdatePrefetch(); - } - } - - size_t GetCurrentIndex() const - { - assert(CheckFrameIndex(currentFrame_)); - return static_cast<size_t>(currentFrame_); - } - - void Apply(Action action) - { - currentFrame_ = ComputeNextFrame(currentFrame_, action); - lastAction_ = action; - UpdatePrefetch(); - } - - size_t GetPrefetchSize() const - { - assert(prefetch_.size() == framesCount_); - return prefetch_.size(); - } - - size_t GetPrefetchFrameIndex(size_t i) const - { - if (i >= prefetch_.size()) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); - } - else - { - assert(CheckFrameIndex(prefetch_[i])); - return static_cast<size_t>(prefetch_[i]); - } - } -}; - - - - -class FrameGeometry -{ -private: - bool isValid_; - std::string frameOfReferenceUid_; - OrthancStone::CoordinateSystem3D coordinates_; - double pixelSpacingX_; - double pixelSpacingY_; - OrthancStone::Extent2D extent_; - -public: - FrameGeometry() : - isValid_(false) - { - } - - FrameGeometry(const Orthanc::DicomMap& tags) : - isValid_(false), - coordinates_(tags) - { - if (!tags.LookupStringValue( - frameOfReferenceUid_, Orthanc::DICOM_TAG_FRAME_OF_REFERENCE_UID, false)) - { - frameOfReferenceUid_.clear(); - } - - OrthancStone::GeometryToolbox::GetPixelSpacing(pixelSpacingX_, pixelSpacingY_, tags); - - unsigned int rows, columns; - if (tags.HasTag(Orthanc::DICOM_TAG_IMAGE_POSITION_PATIENT) && - tags.HasTag(Orthanc::DICOM_TAG_IMAGE_ORIENTATION_PATIENT) && - tags.ParseUnsignedInteger32(rows, Orthanc::DICOM_TAG_ROWS) && - tags.ParseUnsignedInteger32(columns, Orthanc::DICOM_TAG_COLUMNS)) - { - double ox = -pixelSpacingX_ / 2.0; - double oy = -pixelSpacingY_ / 2.0; - extent_.AddPoint(ox, oy); - extent_.AddPoint(ox + pixelSpacingX_ * static_cast<double>(columns), - oy + pixelSpacingY_ * static_cast<double>(rows)); - - isValid_ = true; - } - } - - bool IsValid() const - { - return isValid_; - } - - const std::string& GetFrameOfReferenceUid() const - { - if (isValid_) - { - return frameOfReferenceUid_; - } - else - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); - } - } - - const OrthancStone::CoordinateSystem3D& GetCoordinates() const - { - if (isValid_) - { - return coordinates_; - } - else - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); - } - } - - double GetPixelSpacingX() const - { - if (isValid_) - { - return pixelSpacingX_; - } - else - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); - } - } - - double GetPixelSpacingY() const - { - if (isValid_) - { - return pixelSpacingY_; - } - else - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); - } - } - - bool Intersect(double& x1, // Coordinates of the clipped line (out) - double& y1, - double& x2, - double& y2, - const FrameGeometry& other) const - { - if (this == &other) - { - return false; - } - - OrthancStone::Vector direction, origin; - - if (IsValid() && - other.IsValid() && - !extent_.IsEmpty() && - frameOfReferenceUid_ == other.frameOfReferenceUid_ && - OrthancStone::GeometryToolbox::IntersectTwoPlanes( - origin, direction, - coordinates_.GetOrigin(), coordinates_.GetNormal(), - other.coordinates_.GetOrigin(), other.coordinates_.GetNormal())) - { - double ax, ay, bx, by; - coordinates_.ProjectPoint(ax, ay, origin); - coordinates_.ProjectPoint(bx, by, origin + 100.0 * direction); - - return OrthancStone::GeometryToolbox::ClipLineToRectangle( - x1, y1, x2, y2, - ax, ay, bx, by, - extent_.GetX1(), extent_.GetY1(), extent_.GetX2(), extent_.GetY2()); - } - else - { - return false; - } - } -}; - - - -class ViewerViewport : public OrthancStone::ObserverBase<ViewerViewport> -{ -public: - class IObserver : public boost::noncopyable - { - public: - virtual ~IObserver() - { - } - - virtual void SignalFrameUpdated(const ViewerViewport& viewport, - size_t currentFrame, - size_t countFrames, - DisplayedFrameQuality quality) = 0; - }; - -private: - static const int LAYER_TEXTURE = 0; - static const int LAYER_REFERENCE_LINES = 1; - - - class ICommand : public Orthanc::IDynamicObject - { - private: - boost::shared_ptr<ViewerViewport> viewport_; - - public: - ICommand(boost::shared_ptr<ViewerViewport> viewport) : - viewport_(viewport) - { - if (viewport == NULL) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); - } - } - - virtual ~ICommand() - { - } - - ViewerViewport& GetViewport() const - { - assert(viewport_ != NULL); - return *viewport_; - } - - virtual void Handle(const OrthancStone::DicomResourcesLoader::SuccessMessage& message) const - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); - } - - virtual void Handle(const OrthancStone::HttpCommand::SuccessMessage& message) const - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); - } - - virtual void Handle(const OrthancStone::ParseDicomSuccessMessage& message) const - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); - } - }; - - class SetDefaultWindowingCommand : public ICommand - { - public: - SetDefaultWindowingCommand(boost::shared_ptr<ViewerViewport> viewport) : - ICommand(viewport) - { - } - - virtual void Handle(const OrthancStone::DicomResourcesLoader::SuccessMessage& message) const ORTHANC_OVERRIDE - { - if (message.GetResources()->GetSize() != 1) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol); - } - - const Orthanc::DicomMap& dicom = message.GetResources()->GetResource(0); - - { - OrthancStone::DicomInstanceParameters params(dicom); - - if (params.HasDefaultWindowing()) - { - GetViewport().defaultWindowingCenter_ = params.GetDefaultWindowingCenter(); - GetViewport().defaultWindowingWidth_ = params.GetDefaultWindowingWidth(); - LOG(INFO) << "Default windowing: " << params.GetDefaultWindowingCenter() - << "," << params.GetDefaultWindowingWidth(); - - GetViewport().windowingCenter_ = params.GetDefaultWindowingCenter(); - GetViewport().windowingWidth_ = params.GetDefaultWindowingWidth(); - } - else - { - LOG(INFO) << "No default windowing"; - GetViewport().ResetDefaultWindowing(); - } - } - - GetViewport().DisplayCurrentFrame(); - } - }; - - class SetLowQualityFrame : public ICommand - { - private: - std::string sopInstanceUid_; - unsigned int frameIndex_; - float windowCenter_; - float windowWidth_; - bool isMonochrome1_; - bool isPrefetch_; - - public: - SetLowQualityFrame(boost::shared_ptr<ViewerViewport> viewport, - const std::string& sopInstanceUid, - unsigned int frameIndex, - float windowCenter, - float windowWidth, - bool isMonochrome1, - bool isPrefetch) : - ICommand(viewport), - sopInstanceUid_(sopInstanceUid), - frameIndex_(frameIndex), - windowCenter_(windowCenter), - windowWidth_(windowWidth), - isMonochrome1_(isMonochrome1), - isPrefetch_(isPrefetch) - { - } - - virtual void Handle(const OrthancStone::HttpCommand::SuccessMessage& message) const ORTHANC_OVERRIDE - { - std::unique_ptr<Orthanc::JpegReader> jpeg(new Orthanc::JpegReader); - jpeg->ReadFromMemory(message.GetAnswer()); - - bool updatedCache; - - switch (jpeg->GetFormat()) - { - case Orthanc::PixelFormat_RGB24: - updatedCache = GetViewport().cache_->Acquire( - sopInstanceUid_, frameIndex_, jpeg.release(), QUALITY_JPEG); - break; - - case Orthanc::PixelFormat_Grayscale8: - { - if (isMonochrome1_) - { - Orthanc::ImageProcessing::Invert(*jpeg); - } - - std::unique_ptr<Orthanc::Image> converted( - new Orthanc::Image(Orthanc::PixelFormat_Float32, jpeg->GetWidth(), - jpeg->GetHeight(), false)); - - Orthanc::ImageProcessing::Convert(*converted, *jpeg); - - /** - - Orthanc::ImageProcessing::ShiftScale() computes "(x + offset) * scaling". - The system to solve is thus: - - (0 + offset) * scaling = windowingCenter - windowingWidth / 2 [a] - (255 + offset) * scaling = windowingCenter + windowingWidth / 2 [b] - - Resolution: - - [b - a] => 255 * scaling = windowingWidth - [a] => offset = (windowingCenter - windowingWidth / 2) / scaling - - **/ - - const float scaling = windowWidth_ / 255.0f; - const float offset = (OrthancStone::LinearAlgebra::IsCloseToZero(scaling) ? 0 : - (windowCenter_ - windowWidth_ / 2.0f) / scaling); - - Orthanc::ImageProcessing::ShiftScale(*converted, offset, scaling, false); - updatedCache = GetViewport().cache_->Acquire( - sopInstanceUid_, frameIndex_, converted.release(), QUALITY_JPEG); - break; - } - - default: - throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); - } - - if (updatedCache) - { - GetViewport().SignalUpdatedFrame(sopInstanceUid_, frameIndex_); - } - - if (isPrefetch_) - { - GetViewport().ScheduleNextPrefetch(); - } - } - }; - - - class SetFullDicomFrame : public ICommand - { - private: - std::string sopInstanceUid_; - unsigned int frameIndex_; - bool isPrefetch_; - - public: - SetFullDicomFrame(boost::shared_ptr<ViewerViewport> viewport, - const std::string& sopInstanceUid, - unsigned int frameIndex, - bool isPrefetch) : - ICommand(viewport), - sopInstanceUid_(sopInstanceUid), - frameIndex_(frameIndex), - isPrefetch_(isPrefetch) - { - } - - virtual void Handle(const OrthancStone::ParseDicomSuccessMessage& message) const ORTHANC_OVERRIDE - { - Orthanc::DicomMap tags; - message.GetDicom().ExtractDicomSummary(tags); - - std::string s; - if (!tags.LookupStringValue(s, Orthanc::DICOM_TAG_SOP_INSTANCE_UID, false)) - { - // Safety check - throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); - } - - std::unique_ptr<Orthanc::ImageAccessor> frame( - Orthanc::DicomImageDecoder::Decode(message.GetDicom(), frameIndex_)); - - if (frame.get() == NULL) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); - } - - bool updatedCache; - - if (frame->GetFormat() == Orthanc::PixelFormat_RGB24) - { - updatedCache = GetViewport().cache_->Acquire( - sopInstanceUid_, frameIndex_, frame.release(), QUALITY_FULL); - } - else - { - double a = 1; - double b = 0; - - double doseScaling; - if (tags.ParseDouble(doseScaling, Orthanc::DICOM_TAG_DOSE_GRID_SCALING)) - { - a = doseScaling; - } - - double rescaleIntercept, rescaleSlope; - if (tags.ParseDouble(rescaleIntercept, Orthanc::DICOM_TAG_RESCALE_INTERCEPT) && - tags.ParseDouble(rescaleSlope, Orthanc::DICOM_TAG_RESCALE_SLOPE)) - { - a *= rescaleSlope; - b = rescaleIntercept; - } - - std::unique_ptr<Orthanc::ImageAccessor> converted( - new Orthanc::Image(Orthanc::PixelFormat_Float32, frame->GetWidth(), frame->GetHeight(), false)); - Orthanc::ImageProcessing::Convert(*converted, *frame); - Orthanc::ImageProcessing::ShiftScale2(*converted, b, a, false); - - updatedCache = GetViewport().cache_->Acquire( - sopInstanceUid_, frameIndex_, converted.release(), QUALITY_FULL); - } - - if (updatedCache) - { - GetViewport().SignalUpdatedFrame(sopInstanceUid_, frameIndex_); - } - - if (isPrefetch_) - { - GetViewport().ScheduleNextPrefetch(); - } - } - }; - - - class PrefetchItem - { - private: - size_t frameIndex_; - bool isFull_; - - public: - PrefetchItem(size_t frameIndex, - bool isFull) : - frameIndex_(frameIndex), - isFull_(isFull) - { - } - - size_t GetFrameIndex() const - { - return frameIndex_; - } - - bool IsFull() const - { - return isFull_; - } - }; - - - std::unique_ptr<IObserver> observer_; - OrthancStone::ILoadersContext& context_; - boost::shared_ptr<OrthancStone::WebGLViewport> viewport_; - boost::shared_ptr<OrthancStone::DicomResourcesLoader> loader_; - OrthancStone::DicomSource source_; - boost::shared_ptr<FramesCache> cache_; - std::unique_ptr<OrthancStone::SortedFrames> frames_; - std::unique_ptr<SeriesCursor> cursor_; - float windowingCenter_; - float windowingWidth_; - float defaultWindowingCenter_; - float defaultWindowingWidth_; - bool inverted_; - bool fitNextContent_; - bool isCtrlDown_; - FrameGeometry currentFrameGeometry_; - std::list<PrefetchItem> prefetchQueue_; - - void ScheduleNextPrefetch() - { - while (!prefetchQueue_.empty()) - { - size_t index = prefetchQueue_.front().GetFrameIndex(); - bool isFull = prefetchQueue_.front().IsFull(); - prefetchQueue_.pop_front(); - - const std::string sopInstanceUid = frames_->GetFrameSopInstanceUid(index); - unsigned int frame = frames_->GetFrameIndex(index); - - { - FramesCache::Accessor accessor(*cache_, sopInstanceUid, frame); - if (!accessor.IsValid() || - (isFull && accessor.GetQuality() == 0)) - { - if (isFull) - { - ScheduleLoadFullDicomFrame(index, PRIORITY_NORMAL, true); - } - else - { - ScheduleLoadRenderedFrame(index, PRIORITY_NORMAL, true); - } - return; - } - } - } - } - - - void ResetDefaultWindowing() - { - defaultWindowingCenter_ = 128; - defaultWindowingWidth_ = 256; - - windowingCenter_ = defaultWindowingCenter_; - windowingWidth_ = defaultWindowingWidth_; - - inverted_ = false; - } - - void SignalUpdatedFrame(const std::string& sopInstanceUid, - unsigned int frameIndex) - { - if (cursor_.get() != NULL && - frames_.get() != NULL) - { - size_t index = cursor_->GetCurrentIndex(); - - if (frames_->GetFrameSopInstanceUid(index) == sopInstanceUid && - frames_->GetFrameIndex(index) == frameIndex) - { - DisplayCurrentFrame(); - } - } - } - - void DisplayCurrentFrame() - { - DisplayedFrameQuality quality = DisplayedFrameQuality_None; - - if (cursor_.get() != NULL && - frames_.get() != NULL) - { - const size_t index = cursor_->GetCurrentIndex(); - - unsigned int cachedQuality; - if (!DisplayFrame(cachedQuality, index)) - { - // This frame is not cached yet: Load it - if (source_.HasDicomWebRendered()) - { - ScheduleLoadRenderedFrame(index, PRIORITY_HIGH, false /* not a prefetch */); - } - else - { - ScheduleLoadFullDicomFrame(index, PRIORITY_HIGH, false /* not a prefetch */); - } - } - else if (cachedQuality < QUALITY_FULL) - { - // This frame is only available in low-res: Download the full DICOM - ScheduleLoadFullDicomFrame(index, PRIORITY_HIGH, false /* not a prefetch */); - quality = DisplayedFrameQuality_Low; - } - else - { - quality = DisplayedFrameQuality_High; - } - - currentFrameGeometry_ = FrameGeometry(frames_->GetFrameTags(index)); - - { - // Prepare prefetching - prefetchQueue_.clear(); - for (size_t i = 0; i < cursor_->GetPrefetchSize() && i < 16; i++) - { - size_t a = cursor_->GetPrefetchFrameIndex(i); - if (a != index) - { - prefetchQueue_.push_back(PrefetchItem(a, i < 2)); - } - } - - ScheduleNextPrefetch(); - } - - if (observer_.get() != NULL) - { - observer_->SignalFrameUpdated(*this, cursor_->GetCurrentIndex(), - frames_->GetFramesCount(), quality); - } - } - else - { - currentFrameGeometry_ = FrameGeometry(); - } - } - - void ClearViewport() - { - { - std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); - lock->GetController().GetScene().DeleteLayer(LAYER_TEXTURE); - //lock->GetCompositor().Refresh(lock->GetController().GetScene()); - lock->Invalidate(); - } - } - - bool DisplayFrame(unsigned int& quality, - size_t index) - { - if (frames_.get() == NULL) - { - return false; - } - - const std::string sopInstanceUid = frames_->GetFrameSopInstanceUid(index); - unsigned int frame = frames_->GetFrameIndex(index); - - FramesCache::Accessor accessor(*cache_, sopInstanceUid, frame); - if (accessor.IsValid()) - { - quality = accessor.GetQuality(); - - std::unique_ptr<OrthancStone::TextureBaseSceneLayer> layer; - - switch (accessor.GetImage().GetFormat()) - { - case Orthanc::PixelFormat_RGB24: - layer.reset(new OrthancStone::ColorTextureSceneLayer(accessor.GetImage())); - break; - - case Orthanc::PixelFormat_Float32: - { - std::unique_ptr<OrthancStone::FloatTextureSceneLayer> tmp( - new OrthancStone::FloatTextureSceneLayer(accessor.GetImage())); - tmp->SetCustomWindowing(windowingCenter_, windowingWidth_); - tmp->SetInverted(inverted_ ^ frames_->IsFrameMonochrome1(index)); - layer.reset(tmp.release()); - break; - } - - default: - throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); - } - - layer->SetLinearInterpolation(true); - - double pixelSpacingX, pixelSpacingY; - OrthancStone::GeometryToolbox::GetPixelSpacing( - pixelSpacingX, pixelSpacingY, frames_->GetFrameTags(index)); - layer->SetPixelSpacing(pixelSpacingX, pixelSpacingY); - - if (layer.get() == NULL) - { - return false; - } - else - { - std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); - lock->GetController().GetScene().SetLayer(LAYER_TEXTURE, layer.release()); - - if (fitNextContent_) - { - lock->GetCompositor().RefreshCanvasSize(); - lock->GetCompositor().FitContent(lock->GetController().GetScene()); - fitNextContent_ = false; - } - - //lock->GetCompositor().Refresh(lock->GetController().GetScene()); - lock->Invalidate(); - return true; - } - } - else - { - return false; - } - } - - void ScheduleLoadFullDicomFrame(size_t index, - int priority, - bool isPrefetch) - { - if (frames_.get() != NULL) - { - std::string sopInstanceUid = frames_->GetFrameSopInstanceUid(index); - unsigned int frame = frames_->GetFrameIndex(index); - - { - std::unique_ptr<OrthancStone::ILoadersContext::ILock> lock(context_.Lock()); - lock->Schedule( - GetSharedObserver(), priority, OrthancStone::ParseDicomFromWadoCommand::Create( - source_, frames_->GetStudyInstanceUid(), frames_->GetSeriesInstanceUid(), - sopInstanceUid, false /* transcoding (TODO) */, - Orthanc::DicomTransferSyntax_LittleEndianExplicit /* TODO */, - new SetFullDicomFrame(GetSharedObserver(), sopInstanceUid, frame, isPrefetch))); - } - } - } - - void ScheduleLoadRenderedFrame(size_t index, - int priority, - bool isPrefetch) - { - if (!source_.HasDicomWebRendered()) - { - ScheduleLoadFullDicomFrame(index, priority, isPrefetch); - } - else if (frames_.get() != NULL) - { - std::string sopInstanceUid = frames_->GetFrameSopInstanceUid(index); - unsigned int frame = frames_->GetFrameIndex(index); - bool isMonochrome1 = frames_->IsFrameMonochrome1(index); - - const std::string uri = ("studies/" + frames_->GetStudyInstanceUid() + - "/series/" + frames_->GetSeriesInstanceUid() + - "/instances/" + sopInstanceUid + - "/frames/" + boost::lexical_cast<std::string>(frame + 1) + "/rendered"); - - std::map<std::string, std::string> headers, arguments; - arguments["window"] = ( - boost::lexical_cast<std::string>(defaultWindowingCenter_) + "," + - boost::lexical_cast<std::string>(defaultWindowingWidth_) + ",linear"); - - std::unique_ptr<OrthancStone::IOracleCommand> command( - source_.CreateDicomWebCommand( - uri, arguments, headers, new SetLowQualityFrame( - GetSharedObserver(), sopInstanceUid, frame, - defaultWindowingCenter_, defaultWindowingWidth_, isMonochrome1, isPrefetch))); - - { - std::unique_ptr<OrthancStone::ILoadersContext::ILock> lock(context_.Lock()); - lock->Schedule(GetSharedObserver(), priority, command.release()); - } - } - } - - ViewerViewport(OrthancStone::ILoadersContext& context, - const OrthancStone::DicomSource& source, - const std::string& canvas, - boost::shared_ptr<FramesCache> cache) : - context_(context), - source_(source), - viewport_(OrthancStone::WebGLViewport::Create(canvas)), - cache_(cache), - fitNextContent_(true), - isCtrlDown_(false) - { - if (!cache_) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); - } - - emscripten_set_wheel_callback(viewport_->GetCanvasCssSelector().c_str(), this, true, OnWheel); - emscripten_set_keydown_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, this, false, OnKey); - emscripten_set_keyup_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, this, false, OnKey); - - ResetDefaultWindowing(); - } - - static EM_BOOL OnKey(int eventType, - const EmscriptenKeyboardEvent *event, - void *userData) - { - /** - * WARNING: There is a problem with Firefox 71 that seems to mess - * the "ctrlKey" value. - **/ - - ViewerViewport& that = *reinterpret_cast<ViewerViewport*>(userData); - that.isCtrlDown_ = event->ctrlKey; - return false; - } - - - static EM_BOOL OnWheel(int eventType, - const EmscriptenWheelEvent *wheelEvent, - void *userData) - { - ViewerViewport& that = *reinterpret_cast<ViewerViewport*>(userData); - - if (that.cursor_.get() != NULL) - { - if (wheelEvent->deltaY < 0) - { - that.ChangeFrame(that.isCtrlDown_ ? SeriesCursor::Action_FastMinus : SeriesCursor::Action_Minus); - } - else if (wheelEvent->deltaY > 0) - { - that.ChangeFrame(that.isCtrlDown_ ? SeriesCursor::Action_FastPlus : SeriesCursor::Action_Plus); - } - } - - return true; - } - - void Handle(const OrthancStone::DicomResourcesLoader::SuccessMessage& message) - { - dynamic_cast<const ICommand&>(message.GetUserPayload()).Handle(message); - } - - void Handle(const OrthancStone::HttpCommand::SuccessMessage& message) - { - dynamic_cast<const ICommand&>(message.GetOrigin().GetPayload()).Handle(message); - } - - void Handle(const OrthancStone::ParseDicomSuccessMessage& message) - { - dynamic_cast<const ICommand&>(message.GetOrigin().GetPayload()).Handle(message); - } - -public: - static boost::shared_ptr<ViewerViewport> Create(OrthancStone::ILoadersContext::ILock& lock, - const OrthancStone::DicomSource& source, - const std::string& canvas, - boost::shared_ptr<FramesCache> cache) - { - boost::shared_ptr<ViewerViewport> viewport( - new ViewerViewport(lock.GetContext(), source, canvas, cache)); - - viewport->loader_ = OrthancStone::DicomResourcesLoader::Create(lock); - viewport->Register<OrthancStone::DicomResourcesLoader::SuccessMessage>( - *viewport->loader_, &ViewerViewport::Handle); - - viewport->Register<OrthancStone::HttpCommand::SuccessMessage>( - lock.GetOracleObservable(), &ViewerViewport::Handle); - - viewport->Register<OrthancStone::ParseDicomSuccessMessage>( - lock.GetOracleObservable(), &ViewerViewport::Handle); - - return viewport; - } - - void SetFrames(OrthancStone::SortedFrames* frames) - { - if (frames == NULL) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); - } - - fitNextContent_ = true; - - frames_.reset(frames); - cursor_.reset(new SeriesCursor(frames_->GetFramesCount())); - - LOG(INFO) << "Number of frames in series: " << frames_->GetFramesCount(); - - ResetDefaultWindowing(); - ClearViewport(); - prefetchQueue_.clear(); - currentFrameGeometry_ = FrameGeometry(); - - if (observer_.get() != NULL) - { - observer_->SignalFrameUpdated(*this, cursor_->GetCurrentIndex(), - frames_->GetFramesCount(), DisplayedFrameQuality_None); - } - - if (frames_->GetFramesCount() != 0) - { - const std::string& sopInstanceUid = frames_->GetFrameSopInstanceUid(cursor_->GetCurrentIndex()); - - { - // Fetch the default windowing for the central instance - const std::string uri = ("studies/" + frames_->GetStudyInstanceUid() + - "/series/" + frames_->GetSeriesInstanceUid() + - "/instances/" + sopInstanceUid + "/metadata"); - - loader_->ScheduleGetDicomWeb( - boost::make_shared<OrthancStone::LoadedDicomResources>(Orthanc::DICOM_TAG_SOP_INSTANCE_UID), - 0, source_, uri, new SetDefaultWindowingCommand(GetSharedObserver())); - } - } - } - - // This method is used when the layout of the HTML page changes, - // which does not trigger the "emscripten_set_resize_callback()" - void UpdateSize(bool fitContent) - { - std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); - lock->GetCompositor().RefreshCanvasSize(); - - if (fitContent) - { - lock->GetCompositor().FitContent(lock->GetController().GetScene()); - } - - lock->Invalidate(); - } - - void AcquireObserver(IObserver* observer) - { - observer_.reset(observer); - } - - const std::string& GetCanvasId() const - { - assert(viewport_); - return viewport_->GetCanvasId(); - } - - void ChangeFrame(SeriesCursor::Action action) - { - if (cursor_.get() != NULL) - { - size_t previous = cursor_->GetCurrentIndex(); - - cursor_->Apply(action); - - size_t current = cursor_->GetCurrentIndex(); - if (previous != current) - { - DisplayCurrentFrame(); - } - } - } - - const FrameGeometry& GetCurrentFrameGeometry() const - { - return currentFrameGeometry_; - } - - void UpdateReferenceLines(const std::list<const FrameGeometry*>& planes) - { - std::unique_ptr<OrthancStone::PolylineSceneLayer> layer(new OrthancStone::PolylineSceneLayer); - - if (GetCurrentFrameGeometry().IsValid()) - { - for (std::list<const FrameGeometry*>::const_iterator - it = planes.begin(); it != planes.end(); ++it) - { - assert(*it != NULL); - - double x1, y1, x2, y2; - if (GetCurrentFrameGeometry().Intersect(x1, y1, x2, y2, **it)) - { - OrthancStone::PolylineSceneLayer::Chain chain; - chain.push_back(OrthancStone::ScenePoint2D(x1, y1)); - chain.push_back(OrthancStone::ScenePoint2D(x2, y2)); - layer->AddChain(chain, false, 0, 255, 0); - } - } - } - - { - std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); - - if (layer->GetChainsCount() == 0) - { - lock->GetController().GetScene().DeleteLayer(LAYER_REFERENCE_LINES); - } - else - { - lock->GetController().GetScene().SetLayer(LAYER_REFERENCE_LINES, layer.release()); - } - - //lock->GetCompositor().Refresh(lock->GetController().GetScene()); - lock->Invalidate(); - } - } - - - void ClearReferenceLines() - { - { - std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); - lock->GetController().GetScene().DeleteLayer(LAYER_REFERENCE_LINES); - lock->Invalidate(); - } - } - - - void SetDefaultWindowing() - { - SetWindowing(defaultWindowingCenter_, defaultWindowingWidth_); - } - - void SetWindowing(float windowingCenter, - float windowingWidth) - { - windowingCenter_ = windowingCenter; - windowingWidth_ = windowingWidth; - - { - std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); - - if (lock->GetController().GetScene().HasLayer(LAYER_TEXTURE) && - lock->GetController().GetScene().GetLayer(LAYER_TEXTURE).GetType() == - OrthancStone::ISceneLayer::Type_FloatTexture) - { - dynamic_cast<OrthancStone::FloatTextureSceneLayer&>( - lock->GetController().GetScene().GetLayer(LAYER_TEXTURE)). - SetCustomWindowing(windowingCenter_, windowingWidth_); - lock->Invalidate(); - } - } - } - - void Invert() - { - inverted_ = !inverted_; - - { - std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock()); - - if (lock->GetController().GetScene().HasLayer(LAYER_TEXTURE) && - lock->GetController().GetScene().GetLayer(LAYER_TEXTURE).GetType() == - OrthancStone::ISceneLayer::Type_FloatTexture) - { - OrthancStone::FloatTextureSceneLayer& layer = - dynamic_cast<OrthancStone::FloatTextureSceneLayer&>( - lock->GetController().GetScene().GetLayer(LAYER_TEXTURE)); - - // NB: Using "IsInverted()" instead of "inverted_" is for - // compatibility with MONOCHROME1 images - layer.SetInverted(!layer.IsInverted()); - lock->Invalidate(); - } - } - } -}; - - - - - -typedef std::map<std::string, boost::shared_ptr<ViewerViewport> > Viewports; -static Viewports allViewports_; -static bool showReferenceLines_ = true; - - -static void UpdateReferenceLines() -{ - if (showReferenceLines_) - { - std::list<const FrameGeometry*> planes; - - for (Viewports::const_iterator it = allViewports_.begin(); it != allViewports_.end(); ++it) - { - assert(it->second != NULL); - planes.push_back(&it->second->GetCurrentFrameGeometry()); - } - - for (Viewports::iterator it = allViewports_.begin(); it != allViewports_.end(); ++it) - { - assert(it->second != NULL); - it->second->UpdateReferenceLines(planes); - } - } - else - { - for (Viewports::iterator it = allViewports_.begin(); it != allViewports_.end(); ++it) - { - assert(it->second != NULL); - it->second->ClearReferenceLines(); - } - } -} - - -class WebAssemblyObserver : public ResourcesLoader::IObserver, - public ViewerViewport::IObserver -{ -public: - virtual void SignalResourcesLoaded() ORTHANC_OVERRIDE - { - DISPATCH_JAVASCRIPT_EVENT("ResourcesLoaded"); - } - - virtual void SignalSeriesThumbnailLoaded(const std::string& studyInstanceUid, - const std::string& seriesInstanceUid) ORTHANC_OVERRIDE - { - EM_ASM({ - const customEvent = document.createEvent("CustomEvent"); - customEvent.initCustomEvent("ThumbnailLoaded", false, false, - { "studyInstanceUid" : UTF8ToString($0), - "seriesInstanceUid" : UTF8ToString($1) }); - window.dispatchEvent(customEvent); - }, - studyInstanceUid.c_str(), - seriesInstanceUid.c_str()); - } - - virtual void SignalSeriesMetadataLoaded(const std::string& studyInstanceUid, - const std::string& seriesInstanceUid) ORTHANC_OVERRIDE - { - EM_ASM({ - const customEvent = document.createEvent("CustomEvent"); - customEvent.initCustomEvent("MetadataLoaded", false, false, - { "studyInstanceUid" : UTF8ToString($0), - "seriesInstanceUid" : UTF8ToString($1) }); - window.dispatchEvent(customEvent); - }, - studyInstanceUid.c_str(), - seriesInstanceUid.c_str()); - } - - virtual void SignalFrameUpdated(const ViewerViewport& viewport, - size_t currentFrame, - size_t countFrames, - DisplayedFrameQuality quality) ORTHANC_OVERRIDE - { - EM_ASM({ - const customEvent = document.createEvent("CustomEvent"); - customEvent.initCustomEvent("FrameUpdated", false, false, - { "canvasId" : UTF8ToString($0), - "currentFrame" : $1, - "framesCount" : $2, - "quality" : $3 }); - window.dispatchEvent(customEvent); - }, - viewport.GetCanvasId().c_str(), - static_cast<int>(currentFrame), - static_cast<int>(countFrames), - quality); - - - UpdateReferenceLines(); - }; -}; - - - -static OrthancStone::DicomSource source_; -static boost::shared_ptr<FramesCache> cache_; -static boost::shared_ptr<OrthancStone::WebAssemblyLoadersContext> context_; -static std::string stringBuffer_; - - - -static void FormatTags(std::string& target, - const Orthanc::DicomMap& tags) -{ - Orthanc::DicomArray arr(tags); - Json::Value v = Json::objectValue; - - for (size_t i = 0; i < arr.GetSize(); i++) - { - const Orthanc::DicomElement& element = arr.GetElement(i); - if (!element.GetValue().IsBinary() && - !element.GetValue().IsNull()) - { - v[element.GetTag().Format()] = element.GetValue().GetContent(); - } - } - - target = v.toStyledString(); -} - - -static ResourcesLoader& GetResourcesLoader() -{ - static boost::shared_ptr<ResourcesLoader> resourcesLoader_; - - if (!resourcesLoader_) - { - std::unique_ptr<OrthancStone::ILoadersContext::ILock> lock(context_->Lock()); - resourcesLoader_ = ResourcesLoader::Create(*lock, source_); - resourcesLoader_->AcquireObserver(new WebAssemblyObserver); - } - - return *resourcesLoader_; -} - - -static boost::shared_ptr<ViewerViewport> GetViewport(const std::string& canvas) -{ - Viewports::iterator found = allViewports_.find(canvas); - if (found == allViewports_.end()) - { - std::unique_ptr<OrthancStone::ILoadersContext::ILock> lock(context_->Lock()); - boost::shared_ptr<ViewerViewport> viewport(ViewerViewport::Create(*lock, source_, canvas, cache_)); - viewport->AcquireObserver(new WebAssemblyObserver); - allViewports_[canvas] = viewport; - return viewport; - } - else - { - return found->second; - } -} - - -extern "C" -{ - int main(int argc, char const *argv[]) - { - printf("OK\n"); - Orthanc::InitializeFramework("", true); - Orthanc::Logging::EnableInfoLevel(true); - //Orthanc::Logging::EnableTraceLevel(true); - - context_.reset(new OrthancStone::WebAssemblyLoadersContext(1, 4, 1)); - cache_.reset(new FramesCache); - - DISPATCH_JAVASCRIPT_EVENT("StoneInitialized"); - } - - - EMSCRIPTEN_KEEPALIVE - void SetOrthancRoot(const char* uri, - int useRendered) - { - try - { - context_->SetLocalOrthanc(uri); // For "source_.SetDicomWebThroughOrthancSource()" - source_.SetDicomWebSource(std::string(uri) + "/dicom-web"); - source_.SetDicomWebRendered(useRendered != 0); - } - EXTERN_CATCH_EXCEPTIONS; - } - - - EMSCRIPTEN_KEEPALIVE - void SetDicomWebServer(const char* serverName, - int hasRendered) - { - try - { - source_.SetDicomWebThroughOrthancSource(serverName); - source_.SetDicomWebRendered(hasRendered != 0); - } - EXTERN_CATCH_EXCEPTIONS; - } - - - EMSCRIPTEN_KEEPALIVE - void FetchAllStudies() - { - try - { - GetResourcesLoader().FetchAllStudies(); - } - EXTERN_CATCH_EXCEPTIONS; - } - - EMSCRIPTEN_KEEPALIVE - void FetchStudy(const char* studyInstanceUid) - { - try - { - GetResourcesLoader().FetchStudy(studyInstanceUid); - } - EXTERN_CATCH_EXCEPTIONS; - } - - EMSCRIPTEN_KEEPALIVE - void FetchSeries(const char* studyInstanceUid, - const char* seriesInstanceUid) - { - try - { - GetResourcesLoader().FetchSeries(studyInstanceUid, seriesInstanceUid); - } - EXTERN_CATCH_EXCEPTIONS; - } - - EMSCRIPTEN_KEEPALIVE - int GetStudiesCount() - { - try - { - return GetResourcesLoader().GetStudiesCount(); - } - EXTERN_CATCH_EXCEPTIONS; - return 0; // on exception - } - - EMSCRIPTEN_KEEPALIVE - int GetSeriesCount() - { - try - { - return GetResourcesLoader().GetSeriesCount(); - } - EXTERN_CATCH_EXCEPTIONS; - return 0; // on exception - } - - - EMSCRIPTEN_KEEPALIVE - const char* GetStringBuffer() - { - return stringBuffer_.c_str(); - } - - - EMSCRIPTEN_KEEPALIVE - void LoadStudyTags(int i) - { - try - { - if (i < 0) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); - } - - Orthanc::DicomMap dicom; - GetResourcesLoader().GetStudy(dicom, i); - FormatTags(stringBuffer_, dicom); - } - EXTERN_CATCH_EXCEPTIONS; - } - - - EMSCRIPTEN_KEEPALIVE - void LoadSeriesTags(int i) - { - try - { - if (i < 0) - { - throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); - } - - Orthanc::DicomMap dicom; - GetResourcesLoader().GetSeries(dicom, i); - FormatTags(stringBuffer_, dicom); - } - EXTERN_CATCH_EXCEPTIONS; - } - - - EMSCRIPTEN_KEEPALIVE - int LoadSeriesThumbnail(const char* seriesInstanceUid) - { - try - { - std::string image, mime; - switch (GetResourcesLoader().GetSeriesThumbnail(image, mime, seriesInstanceUid)) - { - case OrthancStone::SeriesThumbnailType_Image: - Orthanc::Toolbox::EncodeDataUriScheme(stringBuffer_, mime, image); - return ThumbnailType_Image; - - case OrthancStone::SeriesThumbnailType_Pdf: - return ThumbnailType_Pdf; - - case OrthancStone::SeriesThumbnailType_Video: - return ThumbnailType_Video; - - case OrthancStone::SeriesThumbnailType_NotLoaded: - return ThumbnailType_Loading; - - case OrthancStone::SeriesThumbnailType_Unsupported: - return ThumbnailType_NoPreview; - - default: - return ThumbnailType_Unknown; - } - } - EXTERN_CATCH_EXCEPTIONS; - return ThumbnailType_Unknown; - } - - - EMSCRIPTEN_KEEPALIVE - void SpeedUpFetchSeriesMetadata(const char* studyInstanceUid, - const char* seriesInstanceUid) - { - try - { - GetResourcesLoader().FetchSeriesMetadata(PRIORITY_HIGH, studyInstanceUid, seriesInstanceUid); - } - EXTERN_CATCH_EXCEPTIONS; - } - - - EMSCRIPTEN_KEEPALIVE - int IsSeriesComplete(const char* seriesInstanceUid) - { - try - { - return GetResourcesLoader().IsSeriesComplete(seriesInstanceUid) ? 1 : 0; - } - EXTERN_CATCH_EXCEPTIONS; - return 0; - } - - EMSCRIPTEN_KEEPALIVE - int LoadSeriesInViewport(const char* canvas, - const char* seriesInstanceUid) - { - try - { - std::unique_ptr<OrthancStone::SortedFrames> frames(new OrthancStone::SortedFrames); - - if (GetResourcesLoader().SortSeriesFrames(*frames, seriesInstanceUid)) - { - GetViewport(canvas)->SetFrames(frames.release()); - return 1; - } - else - { - return 0; - } - } - EXTERN_CATCH_EXCEPTIONS; - return 0; - } - - - EMSCRIPTEN_KEEPALIVE - void AllViewportsUpdateSize(int fitContent) - { - try - { - for (Viewports::iterator it = allViewports_.begin(); it != allViewports_.end(); ++it) - { - assert(it->second != NULL); - it->second->UpdateSize(fitContent != 0); - } - } - EXTERN_CATCH_EXCEPTIONS; - } - - - EMSCRIPTEN_KEEPALIVE - void DecrementFrame(const char* canvas, - int fitContent) - { - try - { - GetViewport(canvas)->ChangeFrame(SeriesCursor::Action_Minus); - } - EXTERN_CATCH_EXCEPTIONS; - } - - - EMSCRIPTEN_KEEPALIVE - void IncrementFrame(const char* canvas, - int fitContent) - { - try - { - GetViewport(canvas)->ChangeFrame(SeriesCursor::Action_Plus); - } - EXTERN_CATCH_EXCEPTIONS; - } - - - EMSCRIPTEN_KEEPALIVE - void ShowReferenceLines(int show) - { - try - { - showReferenceLines_ = (show != 0); - UpdateReferenceLines(); - } - EXTERN_CATCH_EXCEPTIONS; - } - - - EMSCRIPTEN_KEEPALIVE - void SetDefaultWindowing(const char* canvas) - { - try - { - GetViewport(canvas)->SetDefaultWindowing(); - } - EXTERN_CATCH_EXCEPTIONS; - } - - - EMSCRIPTEN_KEEPALIVE - void SetWindowing(const char* canvas, - int center, - int width) - { - try - { - GetViewport(canvas)->SetWindowing(center, width); - } - EXTERN_CATCH_EXCEPTIONS; - } - - - EMSCRIPTEN_KEEPALIVE - void InvertContrast(const char* canvas) - { - try - { - GetViewport(canvas)->Invert(); - } - EXTERN_CATCH_EXCEPTIONS; - } -}