I'm having a problem with the Parms argument in PdfFilter->Decode. I don't
suppose someone could clear this up.
The dictionary contains a sub dictionary containing the Parms. See below.
<</DecodeParms<</Columns 4/Predictor
12>>/Filter/FlateDecode/ID[<6647557224A6C102A60F6D82BB22C18D><AA383B5CF85B7F4BACB9D502B93343E9>]/Index[10
20]/Info 9 0 R/Length 64/Prev 23381/Root 11 0 R/Size 30/Type/XRef/W[1 2 1]>>
If I know which object this is and extract the dictionary then I can't see why
it won't work.
PdfMemDocument *doc = new PdfMemDocument;doc->Load("test.pdf");PdfVecObjects
vecs;vecs = doc->GetObjects();
PdfObject *obj = vecs[14]; // I happen to know that it is this
dictionaryPdfDictionary *dict = new PdfDictionary;*dict = obj->GetDictionary();
//When I print this out by converting the dict to a PdfVariant and calling
ToString I get the above dictionary (the whole lot, sub dictionary with the
parms and all). //I also use that same PdfVariant to extract the data type via
GetDataTypeString() and it tells //me that the data type is a Dictionary
As far as I can see, all I need to do is pass the dict to the PdfFilter->Decode
function like below. The output is just jumble though. If I am not targeting
the XREF stream then this setup works fine, I can successfully decode the
stream if I am not using Decode Parms.I seem to be doing something wrong with
the Decode Parms. Any clues as to what that might be? Do I need to extract
the Sub Dictionary from the above dictionary to make this work? If so how?
(Thanks).
//the below outputs jumble only when I need to use Decode Parms. I'm probably
doing it wrong. myfilter->Decode(inputbuffer, buffersize,
&outputbuffer,outputsize,dict);
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