QtsTeletextCharset Class Reference

Implementation of a Teletext character set. More...

Public Member Functions
	QtsTeletextCharset ()
	Constructor. More...
quint16	g2AccentToUcs2 (quint8 c, quint8 accent) const
	Translate a G2 character into UCS-2. More...
quint16	g2ToUcs2 (quint8 c) const
	Translate a G2 character into UCS-2. More...
void	resetX28 (quint8 fallback)
	Reset the X/28 character set to undefined. More...
void	setM29 (quint8 charset)
	Set the M/29 character set and use it as current character set if X/28 is not defined. More...
void	setX28 (quint8 charset)
	Set the X/28 character set and use it as current character set. More...
quint16	teletextToUcs2 (quint8 c) const
	Check parity and translate any reasonable Teletext character into UCS-2. More...

Static Public Attributes
static const size_t	CHAR_COUNT = 96
	Number of characters per charset. More...

Private Types
typedef quint16	G0CharsetData[G0_COUNT][CHAR_COUNT]
	G0 charsets data. More...
enum	G0CharsetIndex {   LATIN = 0,   CYRILLIC1 = 1,   CYRILLIC2 = 2,   CYRILLIC3 = 3,   GREEK = 4,   ARABIC = 5,   HEBREW = 6,   G0_COUNT = 7 }
	Index of G0 character sets in G0 table. More...

Private Member Functions
void	remapG0 (quint8 charset)
	Remap the GO character set. More...

Private Attributes
quint8	_current
	Current charset index. More...
G0CharsetData	_G0
	Current character set data. More...
quint8	_g0m29
	M/29 charset. More...
quint8	_g0x28
	X/28 charset. More...

Static Private Attributes
static const G0CharsetData	G0Base
	Initial base content of a charset. More...
static const quint8	UNDEFINED = 0xFF
	Undefined charset index. More...

Detailed Description

Implementation of a Teletext character set.

Member Typedef Documentation

G0CharsetData

typedef quint16 QtsTeletextCharset::G0CharsetData[G0_COUNT][CHAR_COUNT]

private

G0 charsets data.

Member Enumeration Documentation

G0CharsetIndex

enum QtsTeletextCharset::G0CharsetIndex

private

Index of G0 character sets in G0 table.

Enumerator
LATIN
CYRILLIC1
CYRILLIC2
CYRILLIC3
GREEK
ARABIC
HEBREW
G0_COUNT

Constructor & Destructor Documentation

QtsTeletextCharset()

QtsTeletextCharset::QtsTeletextCharset

(

)

Constructor.

Member Function Documentation

teletextToUcs2()

quint16 QtsTeletextCharset::teletextToUcs2

(

quint8

c

)

const

Check parity and translate any reasonable Teletext character into UCS-2.

Parameters

[in]

c

Teletext character.

Returns

UCS-2 equivalent.

g2AccentToUcs2()

quint16 QtsTeletextCharset::g2AccentToUcs2	(	quint8	c,
		quint8	accent
	)		const

Translate a G2 character into UCS-2.

Parameters

[in]	c	Teletext character.
[in]	accent	Accent mode (0 to 14) if c is a letter.

Returns

UCS-2 equivalent.

g2ToUcs2()

quint16 QtsTeletextCharset::g2ToUcs2

(

quint8

c

)

const

Translate a G2 character into UCS-2.

Parameters

[in]

c

Teletext character.

Returns

UCS-2 equivalent.

setX28()

void QtsTeletextCharset::setX28

(

quint8

charset

)

Set the X/28 character set and use it as current character set.

Parameters

[in]

charset

Charactet set index.

setM29()

void QtsTeletextCharset::setM29

(

quint8

charset

)

Set the M/29 character set and use it as current character set if X/28 is not defined.

Parameters

[in]

charset

Charactet set index.

resetX28()

void QtsTeletextCharset::resetX28

(

quint8

fallback

)

Reset the X/28 character set to undefined.

Use M/29 as current character or use fallback if M/29 is undefined.

Parameters

[in]

fallback

Fallback charactet set index if M/29 is undefined.

remapG0()

void QtsTeletextCharset::remapG0 ( quint8  charset )

private

Remap the GO character set.

Parameters

[in]

charset

Charactet set index.

Member Data Documentation

CHAR_COUNT

const size_t QtsTeletextCharset::CHAR_COUNT = 96

static

Number of characters per charset.

G0Base

const QtsTeletextCharset::G0CharsetData QtsTeletextCharset::G0Base

staticprivate

Initial base content of a charset.

Charset can be – and always is – changed during transmission.

UNDEFINED

const quint8 QtsTeletextCharset::UNDEFINED = 0xFF

staticprivate

Undefined charset index.

_current

quint8 QtsTeletextCharset::_current

private

Current charset index.

_g0m29

quint8 QtsTeletextCharset::_g0m29

private

M/29 charset.

_g0x28

quint8 QtsTeletextCharset::_g0x28

private

X/28 charset.

_G0

G0CharsetData QtsTeletextCharset::_G0

private

Current character set data.

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

• QtsTeletextCharset.h
• QtsTeletextCharset.cpp