TagLib  2.1
TagLib::MP4::File Class Reference

An implementation of TagLib::File with MP4 specific methods. More...

#include <mp4file.h>

Inheritance diagram for TagLib::MP4::File:
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Collaboration diagram for TagLib::MP4::File:
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Public Types

enum  TagTypes { NoTags = 0x0000 , MP4 = 0x0001 , AllTags = 0xffff }
Public Types inherited from TagLib::File
enum  Position { Beginning , Current , End }
enum  StripTags { StripNone , StripOthers }
enum  DuplicateTags { Duplicate , DoNotDuplicate }

Public Member Functions

 File (FileName file, bool readProperties=true, Properties::ReadStyle audioPropertiesStyle=Properties::Average, ItemFactory *itemFactory=nullptr)
 File (IOStream *stream, bool readProperties=true, Properties::ReadStyle audioPropertiesStyle=Properties::Average, ItemFactory *itemFactory=nullptr)
 ~File () override
 File (const File &)=delete
Fileoperator= (const File &)=delete
Tagtag () const override
PropertyMap properties () const override
void removeUnsupportedProperties (const StringList &properties) override
PropertyMap setProperties (const PropertyMap &) override
PropertiesaudioProperties () const override
bool save () override
bool strip (int tags=AllTags)
bool hasMP4Tag () const
Public Member Functions inherited from TagLib::File
 File (const File &)=delete
Fileoperator= (const File &)=delete
FileName name () const
virtual StringList complexPropertyKeys () const
virtual List< VariantMapcomplexProperties (const String &key) const
virtual bool setComplexProperties (const String &key, const List< VariantMap > &value)
ByteVector readBlock (size_t length)
void writeBlock (const ByteVector &data)
offset_t find (const ByteVector &pattern, offset_t fromOffset=0, const ByteVector &before=ByteVector())
offset_t rfind (const ByteVector &pattern, offset_t fromOffset=0, const ByteVector &before=ByteVector())
void insert (const ByteVector &data, offset_t start=0, size_t replace=0)
void removeBlock (offset_t start=0, size_t length=0)
bool readOnly () const
bool isOpen () const
bool isValid () const
void seek (offset_t offset, Position p=Beginning)
void clear ()
offset_t tell () const
offset_t length ()

Static Public Member Functions

static bool isSupported (IOStream *stream)

Additional Inherited Members

Protected Member Functions inherited from TagLib::File
 File (FileName fileName)
 File (IOStream *stream)
void setValid (bool valid)
void truncate (offset_t length)
Static Protected Member Functions inherited from TagLib::File
static unsigned int bufferSize ()

Detailed Description

An implementation of TagLib::File with MP4 specific methods.

This implements and provides an interface for MP4 files to the TagLib::Tag and TagLib::AudioProperties interfaces by way of implementing the abstract TagLib::File API as well as providing some additional information specific to MP4 files.

Member Enumeration Documentation

◆ TagTypes

This set of flags is used for strip() and is suitable for being OR-ed together.

Enumerator
NoTags 

Empty set. Matches no tag types.

MP4 

Matches MP4 tags.

AllTags 

Matches all tag types.

Constructor & Destructor Documentation

◆ File() [1/3]

TagLib::MP4::File::File ( FileName file,
bool readProperties = true,
Properties::ReadStyle audioPropertiesStyle = Properties::Average,
ItemFactory * itemFactory = nullptr )

Constructs an MP4 file from file. If readProperties is true the file's audio properties will also be read.

Note
In the current implementation, propertiesStyle is ignored.

The items will be created using itemFactory (default if null).

References TagLib::AudioProperties::Average.

Referenced by File(), and operator=().

◆ File() [2/3]

TagLib::MP4::File::File ( IOStream * stream,
bool readProperties = true,
Properties::ReadStyle audioPropertiesStyle = Properties::Average,
ItemFactory * itemFactory = nullptr )

Constructs an MP4 file from stream. If readProperties is true the file's audio properties will also be read.

Note
TagLib will not take ownership of the stream, the caller is responsible for deleting it after the File object.
In the current implementation, propertiesStyle is ignored.

The items will be created using itemFactory (default if null).

References TagLib::AudioProperties::Average.

◆ ~File()

TagLib::MP4::File::~File ( )
overridevirtual

Destroys this instance of the File.

Reimplemented from TagLib::File.

◆ File() [3/3]

TagLib::MP4::File::File ( const File & )
delete

References File().

Member Function Documentation

◆ audioProperties()

Properties * TagLib::MP4::File::audioProperties ( ) const
overridevirtual

Returns the MP4 audio properties for this file.

Implements TagLib::File.

◆ hasMP4Tag()

bool TagLib::MP4::File::hasMP4Tag ( ) const

Returns whether or not the file on disk actually has an MP4 tag, or the file has a Metadata Item List (ilst) atom.

◆ isSupported()

bool TagLib::MP4::File::isSupported ( IOStream * stream)
static

Returns whether or not the given stream can be opened as an ASF file.

Note
This method is designed to do a quick check. The result may not necessarily be correct.

References TAGLIB_MSVC_SUPPRESS_WARNING_NEEDS_TO_HAVE_DLL_INTERFACE.

◆ operator=()

File & TagLib::MP4::File::operator= ( const File & )
delete

References File().

◆ properties()

PropertyMap TagLib::MP4::File::properties ( ) const
overridevirtual

Implements the unified property interface – export function.

Reimplemented from TagLib::File.

Referenced by removeUnsupportedProperties().

◆ removeUnsupportedProperties()

void TagLib::MP4::File::removeUnsupportedProperties ( const StringList & properties)
overridevirtual

Removes unsupported properties. Forwards to the actual Tag's removeUnsupportedProperties() function.

Reimplemented from TagLib::File.

References properties().

◆ save()

bool TagLib::MP4::File::save ( )
overridevirtual

Save the file.

This returns true if the save was successful.

Implements TagLib::File.

◆ setProperties()

PropertyMap TagLib::MP4::File::setProperties ( const PropertyMap & )
overridevirtual

Implements the unified property interface – import function.

Reimplemented from TagLib::File.

◆ strip()

bool TagLib::MP4::File::strip ( int tags = AllTags)

This will strip the tags that match the OR-ed together TagTypes from the file. By default it strips all tags. It returns true if the tags are successfully stripped.

Note
This will update the file immediately.

References AllTags.

◆ tag()

Tag * TagLib::MP4::File::tag ( ) const
overridevirtual

Returns a pointer to the MP4 tag of the file.

MP4::Tag implements the tag interface, so this serves as the reimplementation of TagLib::File::tag().

Note
The Tag is still owned by the MP4::File and should not be deleted by the user. It will be deleted when the file (object) is destroyed.

Implements TagLib::File.


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