But JPEG data is already JPEG encoded. You do not have to apply filters
again to it!
Please take a look at the CreationTest example:
http://sourceforge.net/p/podofo/code/1561/tree/podofo/trunk/test/CreationTest/CreationTest.cpp
You can either draw an image using the following code:
PdfImage image( pDocument );
image.LoadFromFile( "resources/lena.jpg" );
pPainter->DrawImage( 40000 * CONVERSION_CONSTANT, y, &image, 0.3, 0.3 );
Or, if you want to add raw jpeg data, take a look at PdfStream::SetRawData
Cheers,
Dominik
On Mon, Sep 2, 2013 at 10:43 PM, First Second
<spam_receptac...@hotmail.com>wrote:
> Really? When I tried encoding JPEGs into PDFs, the library kept throwing
> an exception. When I dove into the code, I found this in
> PdfFiltersPrivate.cpp:
>
>
> void PdfDCTFilter::BeginEncodeImpl()
> {
> PODOFO_RAISE_ERROR( ePdfError_UnsupportedFilter );
> }
>
> void PdfDCTFilter::EncodeBlockImpl( const char*, pdf_long )
> {
> PODOFO_RAISE_ERROR( ePdfError_UnsupportedFilter );
> }
>
> void PdfDCTFilter::EndEncodeImpl()
> {
> PODOFO_RAISE_ERROR( ePdfError_UnsupportedFilter );
> }
>
>
> This is where I got the impression that JPEGs weren't supported. Yes,
> JPEG loading is implemented, I just can't add them to a document. This
> seems bizarre to me considering how libjpeg is right there, with this
> library...
> Thank you.
>
>
> ------------------------------
> Date: Sat, 31 Aug 2013 11:34:47 +0200
> Subject: Re: [Podofo-users] PoDoFo doesn't support JPEG encoding filters?!
> From: domseich...@googlemail.com
> To: spam_receptac...@hotmail.com
> CC: podofo-us...@lists.sf.net
>
>
> The DCTDecodeFilter ist implemented and supported. Also, loading JPEGs
> into a PdfImage is available (see for example the podofoimg2pdf tool)
>
> Cheers,
> Dominik
>
>
> On Fri, Aug 30, 2013 at 10:25 PM, First Second <
> spam_receptac...@hotmail.com> wrote:
>
> I was making some serious progress in making something that can modify
> PDFs when I ran into the bizarre situation where PoDoFo apparently hasn't
> implemented JPEG encoding. Perhaps it was foolish of me to not check but
> since it linked against libjpeg, I naturally assumed that JPEG images would
> work. I would never have guessed that they only half work.
> Why is JPEG encoding not supported? You have libjpeg right there, you
> even use it for decoding. Why not use it for encoding too?
> Thank you...
>
>
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