TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType > Class Template Reference

The GenericContainer class helps parsing header, track, tag and chapter information of a file. More...

#include <genericcontainer.h>

Inheritance diagram for TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >:

Collaboration diagram for TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >:

Public Types
using	ContainerFileInfoType = FileInfoType
using	ContainerTagType = TagType
using	ContainerTrackType = TrackType
using	ContainerElementType = ElementType

Public Member Functions
	GenericContainer (FileInfoType &fileInfo, std::uint64_t startOffset)
	Constructs a new container for the specified fileInfo at the specified startOffset.
	~GenericContainer () override
	Destroys the container.
void	validateElementStructure (Diagnostics &diag, AbortableProgressFeedback &progress, std::uint64_t *paddingSize=nullptr)
	Parses all elements the file consists of.
FileInfoType &	fileInfo () const
	Returns the related file info.
ElementType *	firstElement () const
	Returns the first element of the file if available; otherwiese returns nullptr.
const std::vector< std::unique_ptr< ElementType > > &	additionalElements () const
	Returns all available additional elements.
std::vector< std::unique_ptr< ElementType > > &	additionalElements ()
	Returns all available additional elements.
TagType *	tag (std::size_t index) override
	Returns the tag with the specified index.
std::size_t	tagCount () const override
	Returns the number of tags attached to the container.
TrackType *	track (std::size_t index) override
	Returns the track with the specified index.
TrackType *	trackById (std::uint64_t id)
std::size_t	trackCount () const override
	Returns the number of tracks the container holds.
const std::vector< std::unique_ptr< TagType > > &	tags () const
	Returns the tags of the file.
std::vector< std::unique_ptr< TagType > > &	tags ()
	Returns the tags of the file.
const std::vector< std::unique_ptr< TrackType > > &	tracks () const
	Returns the tracks of the file.
std::vector< std::unique_ptr< TrackType > > &	tracks ()
	Returns the tracks of the file.
TagType *	createTag (const TagTarget &target=TagTarget()) override
	Creates and returns a tag for the specified target.
bool	removeTag (Tag *tag) override
	Removes the specified tag from the container.
void	removeAllTags () override
	Removes all tags attached to the container.
bool	addTrack (TrackType *track)
	Adds the specified track to the container.
bool	removeTrack (AbstractTrack *track) override
	Removes the specified track to the container.
void	removeAllTracks () override
	Removes all tracks from the container.
void	reset () override
	Discards all parsing results.
Public Member Functions inherited from TagParser::AbstractContainer
virtual	~AbstractContainer ()
	Destroys the container.
std::iostream &	stream ()
	Returns the related stream.
void	setStream (std::iostream &stream)
	Sets the related stream.
std::uint64_t	startOffset () const
	Returns the start offset in the related stream.
CppUtilities::BinaryReader &	reader ()
	Returns the related BinaryReader.
CppUtilities::BinaryWriter &	writer ()
	Returns the related BinaryWriter.
void	parseHeader (Diagnostics &diag, AbortableProgressFeedback &progress)
	Parses the header if not parsed yet.
void	parseTags (Diagnostics &diag, AbortableProgressFeedback &progress)
	Parses the tag information if not parsed yet.
void	parseTracks (Diagnostics &diag, AbortableProgressFeedback &progress)
	Parses the tracks of the file if not parsed yet.
void	parseChapters (Diagnostics &diag, AbortableProgressFeedback &progress)
	Parses the chapters of the file if not parsed yet.
void	parseAttachments (Diagnostics &diag, AbortableProgressFeedback &progress)
	Parses the attachments of the file if not parsed yet.
void	makeFile (Diagnostics &diag, AbortableProgressFeedback &progress)
	Rewrites the file to apply changed tag information.
bool	isHeaderParsed () const
	Returns an indication whether the header has been parsed yet.
bool	areTagsParsed () const
	Returns an indication whether the tags have been parsed yet.
bool	areTracksParsed () const
	Returns an indication whether the tracks have been parsed yet.
bool	areChaptersParsed () const
	Returns an indication whether the chapters have been parsed yet.
bool	areAttachmentsParsed () const
	Returns an indication whether the attachments have been parsed yet.
virtual ElementPosition	determineTagPosition (Diagnostics &diag) const
	Determines the position of the tags inside the file.
virtual bool	supportsTrackModifications () const
	Returns whether the implementation supports adding or removing of tracks.
virtual ElementPosition	determineIndexPosition (Diagnostics &diag) const
	Determines the position of the index.
virtual AbstractChapter *	chapter (std::size_t index)
	Returns the chapter with the specified index.
virtual std::size_t	chapterCount () const
	Returns the number of chapters the container holds.
virtual AbstractAttachment *	createAttachment ()
	Creates and returns a new attachment.
virtual AbstractAttachment *	attachment (std::size_t index)
	Returns the attachment with the specified index.
virtual std::size_t	attachmentCount () const
	Returns the number of attachments the container holds.
std::uint64_t	version () const
	Returns the version if known; otherwise returns 0.
std::uint64_t	readVersion () const
	Returns the "read version" if known; otherwise returns 0.
const std::string &	documentType () const
	Returns a string that describes the document type if available; otherwise returns an empty string.
std::uint64_t	doctypeVersion () const
	Returns the document type version if known; otherwise returns 0.
std::uint64_t	doctypeReadVersion () const
	Returns the document type "read version" if known; otherwise returns 0.
const std::vector< std::string > &	titles () const
	Returns the title(s) of the file.
void	setTitle (std::string_view title, std::size_t segmentIndex=0)
	Sets the title for the specified segment.
virtual bool	supportsTitle () const
	Returns whether the title property is supported.
const std::vector< std::string > &	muxingApplications () const
	Returns the muxing applications specified as meta-data.
const std::vector< std::string > &	writingApplications () const
	Returns the writing applications specified as meta-data.
virtual std::size_t	segmentCount () const
	Returns the number of segments.
CppUtilities::TimeSpan	duration () const
	Returns the duration of the file if known; otherwise returns a time span of zero ticks.
CppUtilities::DateTime	creationTime () const
	Returns the creation time of the file if known; otherwise the returned date time is null.
CppUtilities::DateTime	modificationTime () const
	Returns the modification time of the file if known; otherwise the returned date time is null.
std::uint32_t	timeScale () const
	Returns the time scale of the file if known; otherwise returns 0.

Protected Attributes
std::unique_ptr< ElementType >	m_firstElement
std::vector< std::unique_ptr< ElementType > >	m_additionalElements
std::vector< std::unique_ptr< TagType > >	m_tags
std::vector< std::unique_ptr< TrackType > >	m_tracks
Protected Attributes inherited from TagParser::AbstractContainer
std::uint64_t	m_version
std::uint64_t	m_readVersion
std::string	m_doctype
std::uint64_t	m_doctypeVersion
std::uint64_t	m_doctypeReadVersion
std::vector< std::string >	m_titles
CppUtilities::TimeSpan	m_duration
CppUtilities::DateTime	m_creationTime
CppUtilities::DateTime	m_modificationTime
std::uint32_t	m_timeScale
bool	m_headerParsed
bool	m_tagsParsed
bool	m_tracksParsed
bool	m_tracksAltered
bool	m_chaptersParsed
bool	m_attachmentsParsed

Additional Inherited Members
Protected Member Functions inherited from TagParser::AbstractContainer
	AbstractContainer (std::iostream &stream, std::uint64_t startOffset)
	Constructs a new container for the specified file stream at the specified startOffset.
virtual void	internalParseHeader (Diagnostics &diag, AbortableProgressFeedback &progress)
	Internally called to parse the header.
virtual void	internalParseTags (Diagnostics &diag, AbortableProgressFeedback &progress)
	Internally called to parse the tags.
virtual void	internalParseTracks (Diagnostics &diag, AbortableProgressFeedback &progress)
	Internally called to parse the tracks.
virtual void	internalParseChapters (Diagnostics &diag, AbortableProgressFeedback &progress)
	Internally called to parse the chapters.
virtual void	internalParseAttachments (Diagnostics &diag, AbortableProgressFeedback &progress)
	Internally called to parse the attachments.
virtual void	internalMakeFile (Diagnostics &diag, AbortableProgressFeedback &progress)
	Internally called to make the file.
std::vector< std::string > &	muxingApplications ()
	Returns the muxing applications specified as meta-data.
std::vector< std::string > &	writingApplications ()
	Returns the writing applications specified as meta-data.

Detailed Description

template<class FileInfoType, class TagType, class TrackType, class ElementType>
class TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >

The GenericContainer class helps parsing header, track, tag and chapter information of a file.

Template Parameters

FileInfoType	Specifies the file info class (a class derived from TagParser::BasicFileInfo) which is used to specify the related file.
TagType	Specifies the class which is used to deal with the tag information of the file.
TrackType	Specifies the class which is used to deal with the track of the file.
ElementType	Specifies the class which is used to deal with the elements the file consists of.

Member Typedef Documentation

ContainerElementType

template<class FileInfoType , class TagType , class TrackType , class ElementType >

using TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::ContainerElementType = ElementType

Definition at line 55 of file genericcontainer.h.

ContainerFileInfoType

template<class FileInfoType , class TagType , class TrackType , class ElementType >

using TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::ContainerFileInfoType = FileInfoType

Definition at line 52 of file genericcontainer.h.

ContainerTagType

template<class FileInfoType , class TagType , class TrackType , class ElementType >

using TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::ContainerTagType = TagType

Definition at line 53 of file genericcontainer.h.

ContainerTrackType

template<class FileInfoType , class TagType , class TrackType , class ElementType >

using TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::ContainerTrackType = TrackType

Definition at line 54 of file genericcontainer.h.

Constructor & Destructor Documentation

GenericContainer()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::GenericContainer	(	FileInfoType &	fileInfo,
		std::uint64_t	startOffset )

Constructs a new container for the specified fileInfo at the specified startOffset.

Definition at line 71 of file genericcontainer.h.

~GenericContainer()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::~GenericContainer ( )

override

Destroys the container.

Destroys the reader, the writer and track, tag, chapter and attachment objects as well. Does NOT destroy the stream which has been specified when constructing the object.

Definition at line 84 of file genericcontainer.h.

Member Function Documentation

additionalElements() [1/2]

template<class FileInfoType , class TagType , class TrackType , class ElementType >

std::vector< std::unique_ptr< ElementType > > & TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::additionalElements ( )

inline

Returns all available additional elements.

The parser might decide to split up a file's element tree to skip irrelevant elements to achieve better performance. This method gives access to those sub element trees. Each of the returned elements represents an independent element tree within the file.

Definition at line 158 of file genericcontainer.h.

additionalElements() [2/2]

template<class FileInfoType , class TagType , class TrackType , class ElementType >

const std::vector< std::unique_ptr< ElementType > > & TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::additionalElements ( ) const

inline

Returns all available additional elements.

The parser might decide to split up a file's element tree to skip irrelevant elements to achieve better performance. This method gives access to those sub element trees. Each of the returned elements represents an independent element tree within the file.

Definition at line 145 of file genericcontainer.h.

addTrack()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

bool TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::addTrack

(

TrackType *

track

)

Adds the specified track to the container.

Adding tracks might be not supported by the implementation.

See also

supportsTrackModifications()

The tracks needs to be parsed before additional tracks can be added.

See also

areTracksParsed()

parseTracks()

Remarks

The container takes ownership over the specified track if it was possible to add the track. This makes adding a track from another container impossible without removing it from the other container first.

Returns

Returns an indication whether the track could be added.

Definition at line 315 of file genericcontainer.h.

createTag()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

TagType * TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::createTag ( const TagTarget & target = TagTarget() )

overridevirtual

Creates and returns a tag for the specified target.

Remarks

• If there is already a tag (for the specified target) present, no new tag will be created. The present tag will be returned instead.
• If an empty target is specified it will be ignored.
• If targets aren't supported the specified target will be ignored.
• If no tag could be created, nullptr is returned.
• The container keeps the ownership over the created tag.

Reimplemented from TagParser::AbstractContainer.

Reimplemented in TagParser::OggContainer.

Definition at line 259 of file genericcontainer.h.

fileInfo()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

FileInfoType & TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::fileInfo ( ) const

inline

Returns the related file info.

The related file info has been specified when constructing the container.

Definition at line 114 of file genericcontainer.h.

firstElement()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

ElementType * TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::firstElement ( ) const

inline

Returns the first element of the file if available; otherwiese returns nullptr.

This method gives access to the element structure of the container - the entire element tree can be looked up using the nextSibling() and firstChild() methods of the returned element.

The header needs to be parsed before (see parseHeader()).

The container keeps ownership over the returned element.

See also

isHeaderParsed()

Definition at line 132 of file genericcontainer.h.

removeAllTags()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

void TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::removeAllTags ( )

inlineoverridevirtual

Removes all tags attached to the container.

The tags need to be parsed before they can be removed.

See also

areTagsParsed()

parseTags()

Remarks

The current tag objects are destroyed. All pointers obtained by calling tag() are invalidated.

Reimplemented from TagParser::AbstractContainer.

Reimplemented in TagParser::OggContainer.

Definition at line 293 of file genericcontainer.h.

removeAllTracks()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

void TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::removeAllTracks ( )

overridevirtual

Removes all tracks from the container.

Modifying tracks might be not supported by the implementation.

See also

supportsTrackModifications()

The tracks need to be parsed before they can be removed.

See also

areTracksParsed()

parseTracks()

Remarks

The current track objects are destroyed. All pointers obtained by calling track() are invalidated.

Reimplemented from TagParser::AbstractContainer.

Definition at line 359 of file genericcontainer.h.

removeTag()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

bool TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::removeTag ( Tag * tag )

overridevirtual

Removes the specified tag from the container.

Does nothing if the tag is not attached to the container.

The tags need to be parsed before a removal is possible.

See also

areTagsParsed()

parseTags()

Remarks

The tag is not destroyed. The ownership is transferred to the caller.

Returns

Returns whether the tag could be removed.

Reimplemented from TagParser::AbstractContainer.

Reimplemented in TagParser::OggContainer.

Definition at line 281 of file genericcontainer.h.

removeTrack()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

bool TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::removeTrack ( AbstractTrack * track )

overridevirtual

Removes the specified track to the container.

Removal of tracks might be not supported by the implementation.

See also

supportsTrackModifications()

The tracks need to be parsed before a removal is possible.

See also

areTracksParsed()

parseTracks()

Remarks

The track is not destroyed. The ownership is transferred to the caller.

Returns

Returns whether the track could be removed.

Reimplemented from TagParser::AbstractContainer.

Definition at line 336 of file genericcontainer.h.

reset()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

void TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::reset ( )

overridevirtual

Discards all parsing results.

Reimplemented from TagParser::AbstractContainer.

Reimplemented in TagParser::MatroskaContainer, TagParser::Mp4Container, and TagParser::OggContainer.

Definition at line 368 of file genericcontainer.h.

tag()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

TagType * TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::tag ( std::size_t index )

inlineoverridevirtual

Returns the tag with the specified index.

index must be less than tagCount().

Reimplemented from TagParser::AbstractContainer.

Reimplemented in TagParser::OggContainer.

Definition at line 164 of file genericcontainer.h.

tagCount()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

std::size_t TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::tagCount ( ) const

inlineoverridevirtual

Returns the number of tags attached to the container.

This method returns zero if the tags have not been parsed yet.

Reimplemented from TagParser::AbstractContainer.

Reimplemented in TagParser::OggContainer.

Definition at line 170 of file genericcontainer.h.

tags() [1/2]

template<class FileInfoType , class TagType , class TrackType , class ElementType >

std::vector< std::unique_ptr< TagType > > & TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::tags ( )

inline

Returns the tags of the file.

The tags need to be parsed before (see parseTags()).

The container keeps ownership over the returned tags. Do not push or remove elements to the returned vector.

See also

areTagsParsed()

Definition at line 223 of file genericcontainer.h.

tags() [2/2]

template<class FileInfoType , class TagType , class TrackType , class ElementType >

const std::vector< std::unique_ptr< TagType > > & TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::tags ( ) const

inline

Returns the tags of the file.

The tags need to be parsed before (see parseTags()).

The container keeps ownership over the returned tags.

See also

areTagsParsed()

Definition at line 208 of file genericcontainer.h.

track()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

TrackType * TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::track ( std::size_t index )

inlineoverridevirtual

Returns the track with the specified index.

index must be less than trackCount().

Reimplemented from TagParser::AbstractContainer.

Definition at line 176 of file genericcontainer.h.

trackById()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

TrackType * TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::trackById ( std::uint64_t id )

inline

Definition at line 182 of file genericcontainer.h.

trackCount()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

std::size_t TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::trackCount ( ) const

inlineoverridevirtual

Returns the number of tracks the container holds.

Reimplemented from TagParser::AbstractContainer.

Definition at line 193 of file genericcontainer.h.

tracks() [1/2]

template<class FileInfoType , class TagType , class TrackType , class ElementType >

std::vector< std::unique_ptr< TrackType > > & TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::tracks ( )

inline

Returns the tracks of the file.

The tags need to be parsed before (see parseTracks()).

The container keeps ownership over the returned tracks. Do not push or remove elements to the returned vector.

See also

areTracksParsed()

Definition at line 253 of file genericcontainer.h.

tracks() [2/2]

template<class FileInfoType , class TagType , class TrackType , class ElementType >

const std::vector< std::unique_ptr< TrackType > > & TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::tracks ( ) const

inline

Returns the tracks of the file.

The tags need to be parsed before (see parseTracks()).

The container keeps ownership over the returned tracks.

See also

areTracksParsed()

Definition at line 238 of file genericcontainer.h.

validateElementStructure()

template<class FileInfoType , class TagType , class TrackType , class ElementType >

void TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::validateElementStructure ( Diagnostics & diag, AbortableProgressFeedback & progress, std::uint64_t * paddingSize = nullptr )

inline

Parses all elements the file consists of.

All parsing notifications will be stored in gatheredNotifications. The size of padding/void elements will be accumulated and stored in at paddingSize if it is not a null pointer.

Exceptions

Throws	Failure or a derived class when a parsing error occurs.
Throws	std::ios_base::failure when an IO error occurs.

Definition at line 99 of file genericcontainer.h.

Member Data Documentation

m_additionalElements

template<class FileInfoType , class TagType , class TrackType , class ElementType >

std::vector<std::unique_ptr<ElementType> > TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::m_additionalElements

protected

Definition at line 59 of file genericcontainer.h.

m_firstElement

template<class FileInfoType , class TagType , class TrackType , class ElementType >

std::unique_ptr<ElementType> TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::m_firstElement

protected

Definition at line 58 of file genericcontainer.h.

m_tags

template<class FileInfoType , class TagType , class TrackType , class ElementType >

std::vector<std::unique_ptr<TagType> > TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::m_tags

protected

Definition at line 60 of file genericcontainer.h.

m_tracks

template<class FileInfoType , class TagType , class TrackType , class ElementType >

std::vector<std::unique_ptr<TrackType> > TagParser::GenericContainer< FileInfoType, TagType, TrackType, ElementType >::m_tracks

protected

Definition at line 61 of file genericcontainer.h.

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The documentation for this class was generated from the following file:

• genericcontainer.h