FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
Data Structures | Macros | Enumerations | Functions | Variables
id3v2.h File Reference
#include <stdint.h>
#include "avformat.h"
#include "internal.h"
#include "metadata.h"

Go to the source code of this file.

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)
 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
#define ID3v2_DEFAULT_MAGIC   "ID3"

Default magic bytes for ID3v2 header: "ID3".

Definition at line 35 of file id3v2.h.

Referenced by aiff_read_header(), av_probe_input_format3(), avformat_open_input(), get_id3_tag(), intercept_id3(), mp3_read_probe(), 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

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
bufmust be ID3v2_HEADER_SIZE byte long
magicmagic 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
bufmust 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
metadataParsed metadata is stored here
extra_metaIf 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 916 of file id3v2.c.

Referenced by parse_id3().

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

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

Data is read from and stored to AVFormatContext.

Parameters
extra_metaIf 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 922 of file id3v2.c.

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

void ff_id3v2_start ( ID3v2EncContext id3,
AVIOContext pb,
int  id3v2_version,
const char *  magic 
)

Initialize an ID3v2 tag.

Definition at line 152 of file id3v2enc.c.

Referenced by ff_id3v2_write_simple(), and put_id3v2_tags().

int ff_id3v2_write_metadata ( AVFormatContext s,
ID3v2EncContext id3 
)

Convert and write all global metadata from s into an ID3v2 tag.

Definition at line 239 of file id3v2enc.c.

Referenced by ff_id3v2_write_simple(), and put_id3v2_tags().

int ff_id3v2_write_apic ( AVFormatContext s,
ID3v2EncContext id3,
AVPacket pkt 
)

Write an attached picture from pkt into an ID3v2 tag.

Definition at line 256 of file id3v2enc.c.

Referenced by put_id3v2_tags().

void ff_id3v2_finish ( ID3v2EncContext id3,
AVIOContext pb,
int  padding_bytes 
)

Finalize an opened ID3v2 tag.

Definition at line 325 of file id3v2enc.c.

Referenced by ff_id3v2_write_simple(), mp3_queue_flush(), and put_id3v2_tags().

int ff_id3v2_write_simple ( struct AVFormatContext s,
int  id3v2_version,
const char *  magic 
)

Write an ID3v2 tag containing all global metadata from s.

Parameters
id3v2_versionSubversion of ID3v2; supported values are 3 and 4
magicmagic bytes to identify the header If in doubt, use ID3v2_DEFAULT_MAGIC.

Definition at line 349 of file id3v2enc.c.

Referenced by oma_write_header().

void ff_id3v2_free_extra_meta ( ID3v2ExtraMeta **  extra_meta)

Free memory allocated parsing special (non-text) metadata.

Parameters
extra_metaPointer to a pointer to the head of a ID3v2ExtraMeta list, *extra_meta is set to NULL.

Definition at line 928 of file id3v2.c.

Referenced by aiff_read_header(), avformat_open_input(), free_playlist_list(), get_id3_tag(), handle_id3(), hls_read_header(), oma_read_header(), and read_id3().

int ff_id3v2_parse_apic ( AVFormatContext s,
ID3v2ExtraMeta **  extra_meta 
)

Create a stream for each APIC (attached picture) extracted from the ID3v2 header.

Definition at line 942 of file id3v2.c.

Referenced by aiff_read_header(), avformat_open_input(), get_id3_tag(), handle_id3(), hls_read_header(), and read_id3().

Variable Documentation

const AVMetadataConv ff_id3v2_34_metadata_conv[]

Definition at line 43 of file id3v2.c.

Referenced by write_metadata().

const AVMetadataConv ff_id3v2_4_metadata_conv[]

Definition at line 61 of file id3v2.c.

Referenced by write_metadata().

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.

Definition at line 85 of file id3v2.c.

Referenced by write_metadata().

const char ff_id3v2_4_tags[][4]

ID3v2.4-only text information frames.

Definition at line 93 of file id3v2.c.

Referenced by write_metadata().

const char ff_id3v2_3_tags[][4]

ID3v2.3-only text information frames.

Definition at line 99 of file id3v2.c.

Referenced by write_metadata().

const CodecMime ff_id3v2_mime_tags[]
const char* ff_id3v2_picture_types[21]

Definition at line 104 of file id3v2.c.

Referenced by asf_read_picture(), ff_flac_parse_picture(), ff_id3v2_write_apic(), and read_apic().