void
FreezeScript::AssignVisitor::visitSequence(const SequenceDataPtr& dest)
{
Slice::TypePtr type = dest->getType();
SequenceDataPtr src = SequenceDataPtr::dynamicCast(_src);
if(src && isCompatible(type, src->getType()))
{
DataList& srcElements = src->getElements();
DataList destElements;
Slice::SequencePtr seqType = Slice::SequencePtr::dynamicCast(type);
assert(seqType);
Slice::TypePtr elemType = seqType->type();
string typeName = typeToString(type);
for(DataList::const_iterator p = srcElements.begin(); p != srcElements.end(); ++p)
{
DataPtr element = _factory->create(elemType, false);
Destroyer<DataPtr> elementDestroyer(element);
AssignVisitor v(*p, _factory, _errorReporter, _convert, typeName + " element");
element->visit(v);
destElements.push_back(element);
elementDestroyer.release();
}
DataList& l = dest->getElements();
l.swap(destElements);
}
else
{
typeMismatchError(type, _src->getType());
}
}
void
FreezeScript::TransformVisitor::visitSequence(const SequenceDataPtr& dest)
{
Slice::TypePtr type = dest->getType();
if(_info->doDefaultTransform(type))
{
SequenceDataPtr s = SequenceDataPtr::dynamicCast(_src);
if(s && isCompatible(type, _src->getType()))
{
DataList& srcElements = s->getElements();
DataList destElements;
Slice::SequencePtr seqType = Slice::SequencePtr::dynamicCast(type);
assert(seqType);
Slice::TypePtr elemType = seqType->type();
string typeName = typeToString(type);
for(DataList::const_iterator p = srcElements.begin(); p != srcElements.end(); ++p)
{
DataPtr element = _info->getDataFactory()->create(elemType, false);
Destroyer<DataPtr> elementDestroyer(element);
try
{
TransformVisitor v(*p, _info, typeName + " element");
element->visit(v);
destElements.push_back(element);
elementDestroyer.release();
}
catch(const ClassNotFoundException& ex)
{
//
// If transformation of the sequence element fails because a class
// could not be found, then we invoke purgeObjects() to determine
// whether we should ignore the situation (and remove the element
// from the sequence) or raise the exception again.
//
if(!_info->purgeObjects())
{
throw;
}
warning("purging element of sequence " + typeToString(type) +
" due to missing class type " + ex.id);
}
}
DataList& l = dest->getElements();
l.swap(destElements);
}
else
{
typeMismatchError(type, _src->getType());
}
}
_info->executeCustomTransform(dest, _src);
}
SequenceDataPtr CastTransformer::TypedCast<TElementTo>::Apply(SequenceDataPtr sequence)
{
auto shape = m_parent->m_inputStream.m_sampleLayout;
if (shape.IsUnknown()) // Taking the shape from the sequence.
shape = sequence->GetSampleShape();
if (shape.IsUnknown())
RuntimeError("Unknown shape of the sample in stream '%ls'.", m_parent->m_inputStream.m_name.c_str());
auto& inputSequence = static_cast<DenseSequenceData&>(*sequence);
size_t count = shape.TotalSize() * sequence->m_numberOfSamples;
auto result = std::make_shared<DenseSequenceWithBuffer<TElementTo>>(m_memBuffers, count, shape);
result->m_key = sequence->m_key;
auto src = reinterpret_cast<const TElementFrom*>(inputSequence.GetDataBuffer());
auto dst = result->GetBuffer();
for (size_t i = 0; i < count; i++)
{
dst[i] = static_cast<TElementTo>(src[i]);
}
result->m_numberOfSamples = inputSequence.m_numberOfSamples;
return result;
}
// Transformation of the sequence.
SequenceDataPtr TransposeTransformer::Transform(SequenceDataPtr sequence)
{
auto inputSequence = dynamic_cast<ImageSequenceData*>(sequence.get());
if (inputSequence == nullptr)
RuntimeError("Currently Transpose transform only works with images.");
DataType elementType = m_inputStream.m_elementType != DataType::Unknown ?
m_inputStream.m_elementType :
sequence->m_elementType;
switch (elementType)
{
case DataType::Double:
if (m_precision == DataType::Float)
return m_floatTransform.Apply<double>(inputSequence);
if (m_precision == DataType::Double)
return m_doubleTransform.Apply<double>(inputSequence);
case DataType::Float:
if (m_precision == DataType::Double)
return m_doubleTransform.Apply<float>(inputSequence);
if (m_precision == DataType::Float)
return m_floatTransform.Apply<float>(inputSequence);
case DataType::UChar:
if (m_precision == DataType::Double)
return m_doubleTransform.Apply<unsigned char>(inputSequence);
if (m_precision == DataType::Float)
return m_floatTransform.Apply<unsigned char>(inputSequence);
default:
RuntimeError("Unsupported type. Please apply a cast transform with 'double' or 'float' precision.");
}
return nullptr; // Make compiler happy
}
SequenceDataPtr TransposeTransformer::TypedApply(SequenceDataPtr sequence,
const StreamDescription &inputStream,
const StreamDescription &outputStream)
{
assert(inputStream.m_storageType == StorageType::dense);
auto inputSequence = static_cast<DenseSequenceData&>(*sequence.get());
assert(inputSequence.m_numberOfSamples == 1);
assert(inputStream.m_sampleLayout->GetNumElements() == outputStream.m_sampleLayout->GetNumElements());
size_t count = inputStream.m_sampleLayout->GetNumElements() * GetSizeByType(inputStream.m_elementType);
auto result = std::make_shared<DenseSequenceWithBuffer>();
result->m_buffer.resize(count);
ImageDimensions dimensions(*inputStream.m_sampleLayout, ImageLayoutKind::HWC);
size_t rowCount = dimensions.m_height * dimensions.m_width;
size_t channelCount = dimensions.m_numChannels;
auto src = reinterpret_cast<TElemType*>(inputSequence.m_data);
auto dst = reinterpret_cast<TElemType*>(result->m_buffer.data());
for (size_t irow = 0; irow < rowCount; irow++)
{
for (size_t icol = 0; icol < channelCount; icol++)
{
dst[icol * rowCount + irow] = src[irow * channelCount + icol];
}
}
result->m_sampleLayout = outputStream.m_sampleLayout;
result->m_data = result->m_buffer.data();
result->m_numberOfSamples = inputSequence.m_numberOfSamples;
return result;
}
