Select FileReaders module

API for selecting FileReaders for given input files.

A concrete DescriptorPreference assigns a preference value to each descriptor based on the specified Format and Codec. It represents a preference to use the descriptor in question to read a file with this Format and Codec.

A concrete FileReaderSelector can select a matching FileReaderDescriptor by a pair of Format and Codec from a list of available FileReaderDescriptors. The concrete selection mechanism is implemented by the subclass.

FileReaderSelection provides an API for selecting a FileReaderDescriptor from a set of available descriptors. It uses a concrete DescriptorPreference and a concrete FileReaderSelector to actually select the descriptor based on the preference. An instance of the selected descriptor is returned which can then create the concrete FileReader instance.

A convenience interface to this entire mechanism is provided by functions select_descriptor() and select_reader().

Class FileReaderRegistry holds the set of available FileReaderDescriptors as well as the set of supported Formats. It also defines default selections for Metadata/ToC formats as well as audio formats.

Classes

class arcsdec::v_1_0_0::DefaultPreference: Preference for the most specific descriptor.
class arcsdec::v_1_0_0::DefaultSelector: Selector for highest preference.
class arcsdec::v_1_0_0::DescriptorPreference: Interface for a descriptor preference.
template<typename P, typename S> class arcsdec::v_1_0_0::FileReaderPreferenceSelection: FileReaderSelection of FileReaderDescriptors.
class arcsdec::v_1_0_0::FileReaderRegistry: Hold all available FileReaderDescriptors and all supported Formats.
class arcsdec::v_1_0_0::FileReaderSelection: Interface to select a FileReaderDescriptor by Format and Codec.
class arcsdec::v_1_0_0::FileReaderSelector: Interface for a selector on a set of FileReaderDescriptor instances.
class arcsdec::v_1_0_0::FormatPreference: Preference for the most specific descriptor accepting the Format.
class arcsdec::v_1_0_0::IdSelector: FileReaderSelector for a specific descriptor id.
class arcsdec::v_1_0_0::MinPreference: DescriptorPreference equivalent to MIN_PREFERENCE.
template<class D> struct arcsdec::v_1_0_0::RegisterDescriptor: Register a FileReaderDescriptor type.
template<enum Format F> struct arcsdec::v_1_0_0::RegisterFormat: Register a Format.

Typedefs

using FileReaders = std::unordered_map<std::string, std::unique_ptr<FileReaderDescriptor>>: Type for the container of available FileReaderDescriptor instances.
using FormatList = std::vector<std::unique_ptr<Matcher>>: An unordered list of Matchers for Formats.

Typedef documentation

using FileReaders = std::unordered_map<std::string, std::unique_ptr<FileReaderDescriptor>>
#include <selection.hpp>

Type for the container of available FileReaderDescriptor instances.

A single FileReaderDescriptor can be requested by its id. FileReaderDescriptor instances come without an inherent ordering.

using FormatList = std::vector<std::unique_ptr<Matcher>>
#include <selection.hpp>

An unordered list of Matchers for Formats.