static std::shared_ptr<MetadataInternal> parseMetadataFromNode(JSONNode& metadataNode, const std::vector<std::shared_ptr<MetadataSchema>>& schemas)
{
auto schemaIter = metadataNode.find(ATTR_METADATA_SCHEMA);
auto descIter = metadataNode.find(ATTR_METADATA_DESCRIPTION);
auto idIter = metadataNode.find(ATTR_ID);
if(schemaIter == metadataNode.end() || descIter == metadataNode.end() || idIter == metadataNode.end())
VMF_EXCEPTION(vmf::IncorrectParamException, "Metadata item has no schema name, description name or id");
auto schema = schemas.begin();
for(; schema != schemas.end(); schema++)
if((*schema)->getName() == schemaIter->as_string())
break;
if(schema == schemas.end())
VMF_EXCEPTION(vmf::IncorrectParamException, "Unknown schema for metadata item");
std::shared_ptr<MetadataDesc> spDesc;
if( (spDesc = (*schema)->findMetadataDesc(descIter->as_string())) == nullptr)
VMF_EXCEPTION(vmf::IncorrectParamException, "Unknown description for metadata item");
std::shared_ptr<MetadataInternal> spMetadataInternal(new MetadataInternal(spDesc));
spMetadataInternal->setId(idIter->as_int());
auto frameIdxLoIter = metadataNode.find(ATTR_METADATA_FRAME_IDX_LO);
auto frameIdxHiIter = metadataNode.find(ATTR_METADATA_FRAME_IDX_HI);
auto nFramesLoIter = metadataNode.find(ATTR_METADATA_NFRAMES_LO);
auto nFramesHiIter = metadataNode.find(ATTR_METADATA_NFRAMES_HI);
auto timeLoIter = metadataNode.find(ATTR_METADATA_TIMESTAMP_LO);
auto timeHiIter = metadataNode.find(ATTR_METADATA_TIMESTAMP_HI);
auto durationLoIter = metadataNode.find(ATTR_METADATA_DURATION_LO);
auto durationHiIter = metadataNode.find(ATTR_METADATA_DURATION_HI);
if (frameIdxLoIter != metadataNode.end() && frameIdxHiIter != metadataNode.end())
{
unsigned long lo = frameIdxLoIter->as_int();
unsigned long hi = frameIdxHiIter->as_int();
long long frmIdx = ((long long)hi << 32) | lo;
if (nFramesLoIter != metadataNode.end() && nFramesHiIter != metadataNode.end())
{
unsigned long lo = nFramesLoIter->as_int();
unsigned long hi = nFramesHiIter->as_int();
long long numFrm = ((long long)hi << 32) | lo;
spMetadataInternal->setFrameIndex(frmIdx, numFrm);
}
else
spMetadataInternal->setFrameIndex(frmIdx);
}
if (timeLoIter != metadataNode.end() && timeHiIter != metadataNode.end())
{
unsigned long lo = timeLoIter->as_int();
unsigned long hi = timeHiIter->as_int();
long long time = ((long long)hi << 32) | lo;
if (durationLoIter != metadataNode.end() && durationHiIter != metadataNode.end())
{
unsigned long lo = durationLoIter->as_int();
unsigned long hi = durationHiIter->as_int();
long long dur = ((long long)hi << 32) | lo;
spMetadataInternal->setTimestamp(time, dur);
}
else
spMetadataInternal->setTimestamp(time);
}
auto metadataFieldsArrayIter = metadataNode.find(TAG_FIELDS_ARRAY);
if(metadataFieldsArrayIter == metadataNode.end())
VMF_EXCEPTION(vmf::IncorrectParamException, "No metadata fields array");
for(auto fieldNode = metadataFieldsArrayIter->begin(); fieldNode != metadataFieldsArrayIter->end(); fieldNode++)
{
FieldDesc fieldDesc;
auto fieldNameIter = fieldNode->find(ATTR_NAME);
auto fieldValueIter = fieldNode->find(ATTR_VALUE);
if(fieldNameIter == fieldNode->end() || fieldValueIter == fieldNode->end() )
VMF_EXCEPTION(vmf::IncorrectParamException, "Missing field name or field value");
vmf::Variant field_value;
spDesc->getFieldDesc(fieldDesc, fieldNameIter->as_string());
field_value.fromString(fieldDesc.type, fieldValueIter->as_string());
spMetadataInternal->setFieldValue(fieldNameIter->as_string(), field_value);
}
auto referencesArrayIter = metadataNode.find(TAG_METADATA_REFERENCES_ARRAY);
if(referencesArrayIter != metadataNode.end())
{
for(auto referenceNode = referencesArrayIter->begin(); referenceNode != referencesArrayIter->end(); referenceNode++)
{
auto referenceIdIter = referenceNode->find(ATTR_ID);
if(referenceIdIter == referenceNode->end()) VMF_EXCEPTION(vmf::IncorrectParamException, "Missing reference 'id'");
auto referenceNameIter = referenceNode->find(ATTR_NAME);
if(referenceNameIter == referenceNode->end()) VMF_EXCEPTION(vmf::IncorrectParamException, "Missing reference 'name'");
spMetadataInternal->vRefs.push_back(std::make_pair(IdType(referenceIdIter->as_int()), referenceNameIter->as_string()));
}
}
return spMetadataInternal;
}
void ModelViewBinder<IdType>::unload()
{
bind_to_view( nullptr );
m_id = IdType();
}
inline IdType get() const
{
assert(type == IdType::type_number);
return IdType(id);
}
