zbar::Decoder Class Reference

low-level bar width stream decoder interface. More...

Collaboration diagram for zbar::Decoder:

Classes
class	Handler
	Decoder result handler. More...

Public Member Functions
	Decoder ()
	constructor. More...
	~Decoder ()
zbar_symbol_type_t	decode_width (unsigned width)
	process next bar/space width from input stream. More...
const char *	get_addon_name () const
	retrieve string name for last decode addon. More...
zbar_color_t	get_color () const
	retrieve color of next element passed to Decoder. More...
const std::string	get_data () const
	retrieve last decoded data as a std::string. More...
const char *	get_data_chars () const
	retrieve last decoded data in ASCII format as a char array. More...
int	get_data_length () const
	retrieve length of decoded binary data. More...
const std::string	get_data_string () const
	retrieve last decoded data as a std::string. More...
const char *	get_symbol_name () const
	retrieve string name of last decoded symbol type. More...
zbar_symbol_type_t	get_type () const
	retrieve last decoded symbol type. More...
void	new_scan ()
	mark start of a new scan pass. More...
Decoder &	operator<< (unsigned width)
	process next bar/space width from input stream. More...
void	reset ()
	clear all decoder state. More...
int	set_config (zbar_symbol_type_t symbology, zbar_config_t config, int value)
	set config for indicated symbology (0 for all) to specified value. More...
int	set_config (std::string cfgstr)
	set config parsed from configuration string. More...
void	set_handler (Handler &handler)
	setup callback to handle result data. More...

Static Private Member Functions
static void	_cb (zbar_decoder_t *cdcode)

Private Attributes
zbar_decoder_t *	_decoder
Handler *	_handler

Friends
class	Scanner

Detailed Description

low-level bar width stream decoder interface.

identifies symbols and extracts encoded data

Constructor & Destructor Documentation

zbar::Decoder::Decoder ( )

inline

constructor.

References _decoder, and zbar::zbar_decoder_create().

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zbar::Decoder::~Decoder ( )

inline

References _decoder, and zbar::zbar_decoder_destroy().

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Member Function Documentation

static void zbar::Decoder::_cb ( zbar_decoder_t *  cdcode )

inlinestaticprivate

References _handler, zbar::Decoder::Handler::decode_callback(), and zbar::zbar_decoder_get_userdata().

Referenced by set_handler().

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zbar_symbol_type_t zbar::Decoder::decode_width ( unsigned  width )

inline

process next bar/space width from input stream.

see zbar_decode_width()

References _decoder, and zbar::zbar_decode_width().

Referenced by scan_image().

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const char* zbar::Decoder::get_addon_name ( ) const

inline

retrieve string name for last decode addon.

see zbar_get_addon_name()

References _decoder, zbar::zbar_decoder_get_type(), and zbar::zbar_get_addon_name().

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zbar_color_t zbar::Decoder::get_color ( ) const

inline

retrieve color of next element passed to Decoder.

see zbar_decoder_get_color()

References _decoder, and zbar::zbar_decoder_get_color().

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const std::string zbar::Decoder::get_data ( ) const

inline

retrieve last decoded data as a std::string.

see zbar_decoder_get_data()

References get_data_string().

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const char* zbar::Decoder::get_data_chars ( ) const

inline

retrieve last decoded data in ASCII format as a char array.

see zbar_decoder_get_data()

References _decoder, and zbar::zbar_decoder_get_data().

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int zbar::Decoder::get_data_length ( ) const

inline

retrieve length of decoded binary data.

see zbar_decoder_get_data_length()

References _decoder, and zbar::zbar_decoder_get_data_length().

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const std::string zbar::Decoder::get_data_string ( ) const

inline

retrieve last decoded data as a std::string.

see zbar_decoder_get_data()

References _decoder, zbar::zbar_decoder_get_data(), and zbar::zbar_decoder_get_data_length().

Referenced by get_data(), and scan_image().

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const char* zbar::Decoder::get_symbol_name ( ) const

inline

retrieve string name of last decoded symbol type.

see zbar_get_symbol_name()

References _decoder, zbar::zbar_decoder_get_type(), and zbar::zbar_get_symbol_name().

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zbar_symbol_type_t zbar::Decoder::get_type ( ) const

inline

retrieve last decoded symbol type.

see zbar_decoder_get_type()

References _decoder, and zbar::zbar_decoder_get_type().

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void zbar::Decoder::new_scan ( )

inline

mark start of a new scan pass.

see zbar_decoder_new_scan()

References _decoder, and zbar::zbar_decoder_new_scan().

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Decoder& zbar::Decoder::operator<< ( unsigned  width )

inline

process next bar/space width from input stream.

see zbar_decode_width()

References _decoder, and zbar::zbar_decode_width().

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void zbar::Decoder::reset ( )

inline

clear all decoder state.

see zbar_decoder_reset()

References _decoder, and zbar::zbar_decoder_reset().

Referenced by scan_image().

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int zbar::Decoder::set_config ( zbar_symbol_type_t  symbology, zbar_config_t  config, int  value  )

inline

set config for indicated symbology (0 for all) to specified value.

See also

zbar_decoder_set_config()

Since

0.4

References _decoder, and zbar::zbar_decoder_set_config().

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int zbar::Decoder::set_config ( std::string  cfgstr )

inline

set config parsed from configuration string.

See also

zbar_decoder_parse_config()

Since

0.4

References _decoder, and zbar::zbar_decoder_parse_config().

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void zbar::Decoder::set_handler ( Handler &  handler )

inline

setup callback to handle result data.

References _cb(), _decoder, _handler, zbar::zbar_decoder_set_handler(), and zbar::zbar_decoder_set_userdata().

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Friends And Related Function Documentation

friend class Scanner

friend

Member Data Documentation

zbar_decoder_t* zbar::Decoder::_decoder

private

Referenced by decode_width(), Decoder(), get_addon_name(), get_color(), get_data_chars(), get_data_length(), get_data_string(), get_symbol_name(), get_type(), new_scan(), operator<<(), reset(), zbar::Scanner::Scanner(), set_config(), set_handler(), and ~Decoder().

Handler* zbar::Decoder::_handler

private

Referenced by _cb(), and set_handler().

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

• Decoder.h