144 lines
4.2 KiB
C++
Executable File
144 lines
4.2 KiB
C++
Executable File
/**
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* @RDE_HEADER@
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* StreamNameMapping
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* $Id$
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* $HeadURL$
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* $Author$
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* Created by Christian Fröbel, NLSE, 2018-03-12
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*/
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#include "stream_name_mapping.h"
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#include "audio_video_handler_impl.h"
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#include <AudioVideoManagement/avm.hpp>
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#include <AudioVideoManagement/avm_dtc.h>
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#include <LtsUtilsCore/data_modification_enum.h>
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#include <QtGlobal>
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#include <QString>
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namespace
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{
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/**
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* Same as in AudioVideoHandlerImpl::internalStreamName() but only used as a fallback
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* in case someone requests a name for an unknown MountingPoint.
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*
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* This would not be needed if we could rely on consistent data.
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*/
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QString fallbackStreamName(int mountingPointId)
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{
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return AudioVideoManagement::AudioVideoHandlerImpl::internalStreamName(mountingPointId);
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}
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} // anonymous namespace
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namespace AudioVideoManagement
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{
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StreamNameMapping *StreamNameMapping::create(Interface::Dtc *dtc)
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{
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Q_ASSERT(dtc);
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StreamNameMapping *mapping = new StreamNameMapping;
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QObject::connect(dtc, &Interface::Dtc::streamNameChanged, mapping, &StreamNameMapping::onStreamNameChanged);
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dtc->streamNames([mapping](const StreamName & streamName) { mapping->onStreamNameChanged(streamName, DataModification::eAdded); });
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return mapping;
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}
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QString StreamNameMapping::internalName(int32_t mountingPointId) const
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{
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const auto &found = m_mpToNames.find(mountingPointId);
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if (found != m_mpToNames.end())
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return found->second.internal;
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// We can never be sure that DDS-based data is consistent.
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// In case someone refers to a MountingPoint that either does not exist anymore
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// or for which the mapping was not yet published, we supply a fallback stream name.
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return fallbackStreamName(mountingPointId);
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}
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QString StreamNameMapping::displayName(int32_t mountingPointId) const
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{
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const auto &found = m_mpToNames.find(mountingPointId);
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if (found != m_mpToNames.end())
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return found->second.display;
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return fallbackStreamName(mountingPointId);
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}
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QString StreamNameMapping::internalName(const QString &displayName)
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{
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for (const auto &keyValue : m_mpToNames)
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if (keyValue.second.display == displayName)
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return keyValue.second.internal ;
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return (displayName);
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}
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QString StreamNameMapping::displayName(const QString &internalName) const
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{
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bool matched = m_extractor.exactMatch(internalName);
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const QString effectiveStreamName = matched ? m_extractor.cap(1) : internalName;
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const QString sourceSpecifier = matched ? m_extractor.cap(2) : QString();
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const auto &found = m_internalToDisplay.find(effectiveStreamName);
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if (found == m_internalToDisplay.end())
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return internalName; // no translation
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return found->second + sourceSpecifier;
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}
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std::vector<StreamNameMapping::Names> StreamNameMapping::allNames() const
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{
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std::vector<Names> names;
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names.reserve(m_mpToNames.size());
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for (const auto &keyValue : m_mpToNames)
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names.push_back(keyValue.second);
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return names;
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}
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void StreamNameMapping::onStreamNameChanged(const StreamName &streamName, DataModification modType)
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{
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switch (modType)
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{
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case DataModification::eAdded:
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case DataModification::eModified:
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define(streamName.mountingPointId(), {QString::fromStdString(streamName.internalName()), QString::fromStdString(streamName.displayName())});
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return;
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case DataModification::eRemoved:
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remove(streamName.mountingPointId());
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return;
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}
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Q_ASSERT(false);
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}
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void StreamNameMapping::define(int32_t mountingPointId, const StreamNameMapping::Names &names)
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{
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m_mpToNames[mountingPointId] = names;
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m_internalToDisplay[names.internal] = names.display;
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emit changed(mountingPointId, names.internal, names.display);
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}
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void StreamNameMapping::remove(int32_t mountingPointId)
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{
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const auto found = m_mpToNames.find(mountingPointId);
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Q_ASSERT(found != m_mpToNames.end());
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// sometimes we get a double remove during logout so make sure we don't crash here
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if (found == m_mpToNames.end())
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return;
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const Names &names = found->second;
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QString internalName = names.internal;
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size_t removeCount = m_internalToDisplay.erase(names.internal);
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Q_ASSERT(removeCount == 1);
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m_mpToNames.erase(found);
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emit changed(mountingPointId, internalName, internalName);
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}
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} // namespace AudioVideoManagement
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