CImageDecoder issue

[sandy_zeng]

can i use the following instruction to build a CImageDecoder

void buidImageDecoder(TFileName& aName, HBufC* aData)
{
if(iImageDeocder)
delete iImageDecoder;

iImageDecoder = CImageDecoder:ataNewL(iFs, aData);
}

the API available is static IMPORT_C CImageDecoder *DataNewL(RFs &aFs, const TDesC8 &aSourceData, const TOptions aOptions=EOptionNone, const TUid aImageType=KNullUid, const TUid aImageSubType=KNullUid, const TUid aDecoderUid=KNullUid);

I am just wondering whether HBuf8 just derived from TDes8?


Regards
Zinan

[Sorcery-ltd]

HBufC is HBufC16, you have to explicitly use HBufC8 if you want it.

You might also want to try:

iImageDecoder = CImageDecoder::DataNewL(iFs, *aData);

You can pass an HBufC pointer as a descriptor reference but you should dereference it first.

Hope that helps,
Sorcery

[sandy_zeng]

hi:

this is the code

void CImageHandler::LoadFileAndScaleL(HBufC8* data)
{
....
iDecoder = CImageDecoder:ataNewL(iFs, data);//build based on the HBufC8 data

....
}

when compile, it generate error function call CImageHandler.DataNewL(...) not match..

I try to cover it to TDes8, it works

[anttij]

No, just do what Sorcery-ltd suggested, put the * in front of data when you call DataNewL.