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TFourCC Class Reference

class TFourCC

A class that holds a four character code, representing supported data encodings for the conversion destination. The four character codes are packed into a single TUint32.

FourCC codes are a representation of the datatypes used to identify codecs. FourCC codes are used in codec .rss files as a match string used by ECOM to correctly load the required DLL.

Public Member Functions
	TFourCC ()
	TFourCC ( TUint8 , TUint8 , TUint8 , TUint8 )
	TFourCC (const TDesC8 &)
	TFourCC ( TInt32 )
TUint32	FourCC ()
void	FourCC ( TPtr8 *)
void	Set ( TFourCC )
void	Set ( TUint32 )
TBool	operator!= (const TFourCC &)
TBool	operator!= (const TUint32 &)
TBool	operator== (const TFourCC &)
TBool	operator== (const TUint32 &)

Private Attributes
TUint32	iFourCC

Constructor & Destructor Documentation

TFourCC()

TFourCC

(

)

[inline]

Default constructor initialises the class to KMMFFourCCCodeNULL.

TFourCC(TUint8, TUint8, TUint8, TUint8)

TFourCC	(	TUint8	aChar1,
		TUint8	aChar2,
		TUint8	aChar3,
		TUint8	aChar4
	)	[inline]

Packs the four arguments into a single TUint32.

The four arguments are packed in little-endian format.

Parameters

TUint8 aChar1	A character that represents part of the FourCC code. This character will be the least significant byte of the code.
TUint8 aChar2	A character that represents part of the FourCC code.
TUint8 aChar3	A character that represents part of the FourCC code.
TUint8 aChar4	A character that represents part of the FourCC code. This character will be the most significant byte of the code.

TFourCC(const TDesC8 &)

TFourCC

(

const TDesC8 &

aDes

)

[inline]

Constructs a FourCC code with the given 8 bit desciptor where the descriptor contains the characters that make up the FourCC code.

Parameters

const TDesC8 & aDes

The descriptor containing the characters from which to make the FourCC code.

TFourCC(TInt32)

TFourCC

(

TInt32

aFourCC

)

[inline]

Constructor with a TInt32 in little-endian format.

Parameters

TInt32 aFourCC

The FourCC code.

Member Functions Documentation

FourCC()

TUint32

FourCC

(

)

[inline]

Returns the FourCC code in little-endian format.

FourCC(TPtr8 *)

void

FourCC

(

TPtr8 *

aDes

)

const [inline]

Unpacks the FourCC code in little-endian format into the space provided by the argument.

The argument must be a pointer to a buffer of 4 bytes or greater.

Parameters

TPtr8 * aDes

A buffer to hold the unpacked FourCC code.

Set(TFourCC)

void

Set

(

TFourCC

aFourCC

)

[inline]

Sets the FourCC code equal to the value in the supplied argument.

Parameters

TFourCC aFourCC

The required TFourCC containting the FourCC code.

Set(TUint32)

void

Set

(

TUint32

aFourCC

)

[inline]

Sets the FourCC code equal to the supplied argument.

Parameters

TUint32 aFourCC

The required FourCC code.

operator!=(const TFourCC &)

TBool

operator!=

(

const TFourCC &

)

const [inline]

Inequality operator.

Parameters

const TFourCC & aA

The TFourCC code that *this will be tested against.

operator!=(const TUint32 &)

TBool

operator!=

(

const TUint32 &

aUint

)

const [inline]

Inequality operator.

Parameters

const TUint32 & aUint

The FourCC code that *this will be tested against.

operator==(const TFourCC &)

TBool

operator==

(

const TFourCC &

)

const [inline]

Equality operator.

Parameters

const TFourCC & aA

The TFourCC code that *this will be tested against.

operator==(const TUint32 &)

TBool

operator==

(

const TUint32 &

aUint

)

const [inline]

Equality operator.

Parameters

const TUint32 & aUint

The FourCC code that *this will be tested against.

Member Data Documentation

TUint32 iFourCC

TUint32

iFourCC

[private]