> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Sascha Fuchs
> Sent: Monday, April 16, 2007 10:09 AM
> To: Post all your questions about iText here
> Subject: [iText-questions] Change encoding of font
>
> Hello Paolo Soares,
>
> Hello all
>
>
>
> Thank you Paolo for your helping hint for reducing redundant
> font embedding with BaseFont.getDocumentFonts() and replace
> the FontFile2. It works well (font looks same even font is
> not installed on local computer) and reduces a lot of needed
> disk space (factor 10 or more - depending on number of pages).
>
>
>
> But we need to reduce more disk space (but the font embedding
> should be kept).
>
> To reduce the needed disk space of a PDF document we want to
> change the encoding of embedded font from ASCIIHexDecode (not
You have a PDF producer that doesn't compress fonts? Amazing.
> very memory efficient encoding - 40% overhead) to another,
> like LZWDecode.
>
FlateDecode.
>
>
> I see following two possible ways to solve the problem:
>
> 1: Get the stream of the font 'embedding' (I know how to) ->
> get the decoded data (I guess with
> PdfReader.ASCIIHexDecode(byte-array-of-stream) ) -> encode
> the data to more 'efficient' encoding (I don't know how to)
> -> replace old stream (I guess I know how)
>
> 2: Get the stream of the font 'embedding' (I know how to) ->
> get the decoded data (I guess with
> PdfReader.ASCIIHexDecode(byte-array-of-stream) ) -> create a
> new font with decoded data as font embedding and encoding (I
> don't' know how - I guess with instance of BaseFont) ->
> replace the FontFile2 (now I know how to)...
>
> Can somebody help me?
>
You have methods in PdfReader to get the stream content and that already
returns uncompressed. Create a PdfStream with that and replace it in the
apropriate place.
Paulo
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