#include <stdint.h>
#include "avformat.h"
#include "internal.h"
#include "metadata.h"

Data Structures
struct	ID3v2EncContext

struct	ID3v2ExtraMeta

struct	ID3v2ExtraMetaGEOB

struct	ID3v2ExtraMetaAPIC

struct	ID3v2ExtraMetaPRIV

Macros
#define	ID3v2_HEADER_SIZE 10

#define	ID3v2_DEFAULT_MAGIC "ID3"
	Default magic bytes for ID3v2 header: "ID3".

#define	ID3v2_FLAG_DATALEN 0x0001

#define	ID3v2_FLAG_UNSYNCH 0x0002

#define	ID3v2_FLAG_ENCRYPTION 0x0004

#define	ID3v2_FLAG_COMPRESSION 0x0008

Enumerations
enum	ID3v2Encoding { ID3v2_ENCODING_ISO8859 = 0, ID3v2_ENCODING_UTF16BOM = 1, ID3v2_ENCODING_UTF16BE = 2, ID3v2_ENCODING_UTF8 = 3 }

Functions
int	ff_id3v2_match (const uint8_t buf, const char magic)
	Detect ID3v2 Header.

int	ff_id3v2_tag_len (const uint8_t *buf)
	Get the length of an ID3v2 tag.

void	ff_id3v2_read_dict (AVIOContext pb, AVDictionary metadata, const char magic, ID3v2ExtraMeta **extra_meta)
	Read an ID3v2 tag into specified dictionary and retrieve supported extra metadata.

void	ff_id3v2_read (AVFormatContext s, const char magic, ID3v2ExtraMeta **extra_meta, unsigned int max_search_size)
	Read an ID3v2 tag, including supported extra metadata and chapters.

void	ff_id3v2_start (ID3v2EncContext id3, AVIOContext pb, int id3v2_version, const char *magic)
	Initialize an ID3v2 tag.

int	ff_id3v2_write_metadata (AVFormatContext s, ID3v2EncContext id3)
	Convert and write all global metadata from s into an ID3v2 tag.

int	ff_id3v2_write_apic (AVFormatContext s, ID3v2EncContext id3, AVPacket *pkt)
	Write an attached picture from pkt into an ID3v2 tag.

void	ff_id3v2_finish (ID3v2EncContext id3, AVIOContext pb, int padding_bytes)
	Finalize an opened ID3v2 tag.

int	ff_id3v2_write_simple (struct AVFormatContext s, int id3v2_version, const char magic)
	Write an ID3v2 tag containing all global metadata from s.

void	ff_id3v2_free_extra_meta (ID3v2ExtraMeta **extra_meta)
	Free memory allocated parsing special (non-text) metadata.

int	ff_id3v2_parse_apic (AVFormatContext s, ID3v2ExtraMeta *extra_meta)
	Create a stream for each APIC (attached picture) extracted from the ID3v2 header.

Variables
const AVMetadataConv	ff_id3v2_34_metadata_conv []

const AVMetadataConv	ff_id3v2_4_metadata_conv []

const char	ff_id3v2_tags [][4]
	A list of text information frames allowed in both ID3 v2.3 and v2.4 http://www.id3.org/id3v2.4.0-frames http://www.id3.org/id3v2.4.0-changes.

const char	ff_id3v2_4_tags [][4]
	ID3v2.4-only text information frames.

const char	ff_id3v2_3_tags [][4]
	ID3v2.3-only text information frames.

const CodecMime	ff_id3v2_mime_tags []

const char *	ff_id3v2_picture_types [21]

Macro Definition Documentation

#define ID3v2_HEADER_SIZE 10

Definition at line 30 of file id3v2.h.

Referenced by ff_id3v2_tag_len(), ff_id3v2_write_apic(), id3v2_put_ttag(), id3v2_read_internal(), intercept_id3(), oma_read_probe(), and write_chapter().

#define ID3v2_DEFAULT_MAGIC "ID3"

Default magic bytes for ID3v2 header: "ID3".

Definition at line 35 of file id3v2.h.

Referenced by adts_write_header(), aiff_read_header(), av_probe_input_format3(), avformat_open_input(), get_id3_tag(), intercept_id3(), mp3_read_probe(), parse_dsd_prop(), parse_id3(), put_id3v2_tags(), and read_id3().

#define ID3v2_FLAG_DATALEN 0x0001

Definition at line 37 of file id3v2.h.

Referenced by id3v2_parse().

#define ID3v2_FLAG_UNSYNCH 0x0002

Definition at line 38 of file id3v2.h.

Referenced by id3v2_parse().

#define ID3v2_FLAG_ENCRYPTION 0x0004

Definition at line 39 of file id3v2.h.

Referenced by id3v2_parse().

#define ID3v2_FLAG_COMPRESSION 0x0008

Definition at line 40 of file id3v2.h.

Referenced by id3v2_parse().

Enumeration Type Documentation

enum ID3v2Encoding

Enumerator:

ID3v2_ENCODING_ISO8859
ID3v2_ENCODING_UTF16BOM
ID3v2_ENCODING_UTF16BE
ID3v2_ENCODING_UTF8

Definition at line 42 of file id3v2.h.

Function Documentation

int ff_id3v2_match	(	const uint8_t *	buf,
		const char *	magic
	)

Detect ID3v2 Header.

Parameters

buf	must be ID3v2_HEADER_SIZE byte long
magic	magic bytes to identify the header. If in doubt, use ID3v2_DEFAULT_MAGIC.

Definition at line 140 of file id3v2.c.

Referenced by av_probe_input_format3(), id3v2_read_internal(), intercept_id3(), mp3_read_probe(), and oma_read_probe().

int ff_id3v2_tag_len ( const uint8_t * buf )

Get the length of an ID3v2 tag.

Parameters

buf	must be ID3v2_HEADER_SIZE bytes long and point to the start of an already detected ID3v2 tag

Definition at line 153 of file id3v2.c.

Referenced by av_probe_input_format3(), intercept_id3(), mp3_read_probe(), and oma_read_probe().

void ff_id3v2_read_dict	(	AVIOContext *	pb,
		AVDictionary **	metadata,
		const char *	magic,
		ID3v2ExtraMeta **	extra_meta
	)

Read an ID3v2 tag into specified dictionary and retrieve supported extra metadata.

Chapters are not currently read by this variant.

Parameters

metadata	Parsed metadata is stored here
extra_meta	If not NULL, extra metadata is parsed into a list of ID3v2ExtraMeta structs and *extra_meta points to the head of the list

Definition at line 985 of file id3v2.c.

Referenced by parse_id3().

void ff_id3v2_read	(	AVFormatContext *	s,
		const char *	magic,
		ID3v2ExtraMeta **	extra_meta,
		unsigned int	max_search_size
	)

Read an ID3v2 tag, including supported extra metadata and chapters.

Data is read from and stored to AVFormatContext.

Parameters

extra_meta	If not NULL, extra metadata is parsed into a list of ID3v2ExtraMeta structs and *extra_meta points to the head of the list
opt]	max_search_search restrict ID3 magic number search (bytes from start)

Definition at line 991 of file id3v2.c.

Referenced by aiff_read_header(), avformat_open_input(), get_id3_tag(), oma_read_header(), parse_dsd_prop(), and read_id3().