MetaIOMP4 Class Reference

Read and write metadata in MP4 container tags. More...

#include <metaiomp4.h>

Inheritance diagram for MetaIOMP4:

List of all members.

Public Member Functions
	MetaIOMP4 (void)
virtual	~MetaIOMP4 (void)
bool	write (const Metadata *mdata)
Metadata *	read (const QString &filename)
Private Member Functions
int	getTrackLength (const QString &filename)
	Find the length of the track (in seconds).
int	getTrackLength (AVFormatContext *p_context)
	Find the length of the track (in seconds).
QString	getFieldValue (AVFormatContext *context, const char *tagname)
	Retrieve the value of a named metadata field.
void	metadataSanityCheck (QString *artist, QString *album, QString *title, QString *genre)
	Replace any empty strings in extracted metadata with sane defaults.

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Detailed Description

Read and write metadata in MP4 container tags.

Definition at line 16 of file metaiomp4.h.

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Constructor & Destructor Documentation

MetaIOMP4::MetaIOMP4

(

void

)

Definition at line 16 of file metaiomp4.cpp.

MetaIOMP4::~MetaIOMP4

(

void

)

[virtual]

Definition at line 23 of file metaiomp4.cpp.

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Member Function Documentation

bool MetaIOMP4::write

(

const Metadata *

mdata

)

[virtual]

Writes all metadata back to a file.

Parameters:

mdata

A pointer to a Metadata object

Returns:

Boolean to indicate success/failure.

Implements MetaIO.

Definition at line 30 of file metaiomp4.cpp.

Metadata * MetaIOMP4::read

(

const QString &

filename

)

[virtual]

Reads Metadata from a file.

Parameters:

filename

The filename to read metadata from.

Returns:

Metadata pointer or NULL on error

Implements MetaIO.

Definition at line 82 of file metaiomp4.cpp.

int MetaIOMP4::getTrackLength

(

const QString &

filename

)

[private, virtual]

Find the length of the track (in seconds).

Parameters:

filename

The filename for which we want to find the length.

Returns:

An integer (signed!) to represent the length in seconds.

Implements MetaIO.

Definition at line 181 of file metaiomp4.cpp.

Referenced by read().

int MetaIOMP4::getTrackLength

(

AVFormatContext *

pContext

)

[private]

Find the length of the track (in seconds).

Parameters:

pContext

The AV Format Context.

Returns:

An integer (signed!) to represent the length in seconds.

Definition at line 210 of file metaiomp4.cpp.

QString MetaIOMP4::getFieldValue	(	AVFormatContext *	context,
		const char *	tagname
	)			[private]

Retrieve the value of a named metadata field.

Parameters:

	context	AVFormatContext of the file
	tagname	The name of the field

Returns:

A string containing the requested value

Definition at line 163 of file metaiomp4.cpp.

Referenced by read().

void MetaIOMP4::metadataSanityCheck	(	QString *	artist,
		QString *	album,
		QString *	title,
		QString *	genre
	)			[private]

Replace any empty strings in extracted metadata with sane defaults.

Parameters:

	artist	Artist
	album	Album
	title	Title
	genre	Genre

Definition at line 228 of file metaiomp4.cpp.

Referenced by read().

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

• metaiomp4.h
• metaiomp4.cpp