MetaDataID3V2 Class Reference

Simple ID3 Meta Data API which supports ID3 V2: We only support the "TALB", "TOPE", "TIT2", "TCON" tags. More...

#include <MetaDataID3.h>

Inheritance diagram for MetaDataID3V2:

Public Member Functions
	MetaDataID3V2 ()=default
bool	begin ()
	(re)starts the processing
void	end ()
	Ends the processing and releases the memory.
ID3v2FrameString	frameHeader ()
	provides the current frame header
ID3v2	header ()
	provides the ID3v2 header
bool	isProcessed ()
	returns true if the tag has been provided
void	resize (int size)
	Defines the result buffer size (default is 256);.
void	setCallback (void(*fn)(MetaDataType info, const char *str, int len))
size_t	write (const uint8_t *data, size_t len)
	provide the (partial) data which might contain the meta data

Protected Member Functions
uint32_t	calcSize (uint8_t chars[4])
bool	encodingIsSupported ()
	For the time beeing we support only ASCII and UTF8.
int	findTag (const char *tag, const char *str, size_t len)
	find the tag position in the string - if not found we return -1;
bool	isAscii (int l)
	Make sure that the result is a valid ASCII string.
int	isCharAscii (int ch)
void	processnotifyAudioChange ()
	executes the callbacks
void	processPartialTagAtTail (const uint8_t *data, size_t len)
	We have the beginning of the metadata and need to process the remainder.
void	processTagNotFound (const uint8_t *data, size_t len)
	try to find the metatdata tag in the provided data
int	strpos (char *str, const char *target)

Protected Attributes
const char *	actual_tag
bool	armed = false
void(*	callback )(MetaDataType info, const char *title, int len)
uint64_t	end_len = 0
ID3v2FrameString	frame_header
Vector< char >	result {0}
int	result_size = 256
ParseStatus	status = TagNotFound
bool	tag_active = false
bool	tag_processed = false
ID3v2	tagv2
uint64_t	total_len = 0
int	use_bytes_of_next_write = 0

Detailed Description

Simple ID3 Meta Data API which supports ID3 V2: We only support the "TALB", "TOPE", "TIT2", "TCON" tags.

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

MetaDataID3V2()

MetaDataID3V2 ( )

default

Member Function Documentation

begin()

bool begin ( )

inline

(re)starts the processing

calcSize()

uint32_t calcSize ( uint8_t  chars[4] )

inlineprotected

encodingIsSupported()

bool encodingIsSupported ( )

inlineprotected

For the time beeing we support only ASCII and UTF8.

end()

void end ( )

inline

Ends the processing and releases the memory.

findTag()

int findTag ( const char *  tag, const char *  str, size_t  len  )

inlineprotectedinherited

find the tag position in the string - if not found we return -1;

frameHeader()

ID3v2FrameString frameHeader ( )

inline

provides the current frame header

header()

ID3v2 header ( )

inline

provides the ID3v2 header

isAscii()

bool isAscii ( int  l )

inlineprotected

Make sure that the result is a valid ASCII string.

isCharAscii()

int isCharAscii ( int  ch )

inlineprotected

isProcessed()

bool isProcessed ( )

inline

returns true if the tag has been provided

processnotifyAudioChange()

void processnotifyAudioChange ( )

inlineprotected

executes the callbacks

processPartialTagAtTail()

void processPartialTagAtTail ( const uint8_t *  data, size_t  len  )

inlineprotected

We have the beginning of the metadata and need to process the remainder.

processTagNotFound()

void processTagNotFound ( const uint8_t *  data, size_t  len  )

inlineprotected

try to find the metatdata tag in the provided data

resize()

void resize ( int  size )

inline

Defines the result buffer size (default is 256);.

setCallback()

void setCallback ( void(*)(MetaDataType info, const char *str, int len)  fn )

inlineinherited

strpos()

int strpos ( char *  str, const char *  target  )

inlineprotected

write()

size_t write ( const uint8_t *  data, size_t  len  )

inline

provide the (partial) data which might contain the meta data

Member Data Documentation

actual_tag

const char* actual_tag

protected

armed

bool armed = false

protectedinherited

callback

void(* callback) (MetaDataType info, const char *title, int len)

protectedinherited

end_len

uint64_t end_len = 0

protected

frame_header

ID3v2FrameString frame_header

protected

result

Vector<char> result {0}

protected

result_size

int result_size = 256

protected

status

ParseStatus status = TagNotFound

protected

tag_active

bool tag_active = false

protected

tag_processed

bool tag_processed = false

protected

tagv2

ID3v2 tagv2

protected

total_len

uint64_t total_len = 0

protected

use_bytes_of_next_write

int use_bytes_of_next_write = 0

protected

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

• src/AudioTools/CoreAudio/AudioMetaData/MetaDataID3.h