void CompositeDataReader::CreateTransforms(const ConfigParameters& deserializerConfig)
{
std::string defaultModule = deserializerConfig("module");
argvector<ConfigParameters> inputs = deserializerConfig("input");
for (size_t i = 0; i < inputs.size(); ++i)
{
// Trying to find transfomers in a stream section of the config.
auto inputSections = TryGetSectionsWithParameter(inputs[i], "transforms");
if (inputSections.size() > 1)
{
LogicError("Only a single 'transforms' config is allowed per stream.");
}
// No need to create anything for this stream, skipping.
if (inputSections.empty())
{
continue;
}
ConfigParameters input = inputs[i](inputSections.front());
std::wstring inputName = msra::strfun::utf16(input.ConfigName());
// Read tranformers in order and appending them to the transformer pipeline.
argvector<ConfigParameters> transforms = input("transforms");
for (size_t j = 0; j < transforms.size(); ++j)
{
TransformerPtr transformer = CreateTransformer(transforms[j], defaultModule);
m_transforms.push_back(Transformation{transformer, inputName});
}
}
}
[[nodiscard]] inline Transformer2D CreateTransformer(ContentScale contentScale = ContentScale::Default)
{
return CreateTransformer(Window::BaseSize(), contentScale);
}
[[nodiscard]] inline Transformer2D CreateTransformer(int32 width, int32 height, ContentScale contentScale = ContentScale::Default)
{
return CreateTransformer(Size(width, height), contentScale);
}