When the jpeg is loaded by JAI it's converted to plain RGB. You'll have to
save it again to jpeg with JAI.
Best Regards,
Paulo Soares
> -----Original Message-----
> From: Cinzia S [SMTP:[EMAIL PROTECTED]
> Sent: Wednesday, June 25, 2003 10:25
> To: [EMAIL PROTECTED]
> Subject: [iText-questions] testing for jpeg encoding
>
> Hi,
>
> I'm trying to add a jpeg image to an rtf document. First I read in a jpg,
> scale it and output it to a ByteArrayOutputStream (using JAI). However,
> when
> I convert this image data to an instance of com.lowagie.text.Image and
> test
> for its type, it doesn't seem to be recongized as a jpeg, but as raw image
> data. Does anyone know what is going wrong? I've included some portions of
> code:
>
> // IN JAITest class
> public ByteArrayOutputStream writeImageToBuffer( PlanarImage img,
> JPEGEncodeParam encodeParam )
> {
> ByteArrayOutputStream out = null;
>
> try {
> out = new ByteArrayOutputStream();
> ImageEncoder encoder = ImageCodec.createImageEncoder( "JPEG", out,
> encodeParam );
> encoder.encode( img );
> } catch (Exception e) { e.printStackTrace(); }
>
> return out;
> }
>
>
> // IN RTFTest class
> public void addImage( ByteArrayOutputStream out, int width, int height )
> {
> byte data[] = out.toByteArray();
>
> try {
> com.lowagie.text.Image img = com.lowagie.text.Image.getInstance(
> width, height, RGB_COMPONENTS, BITS_PER_COMPONENT, data );
> document_.add( img );
>
> System.out.println( "Is ImgRaw " + String.valueOf(
> img.isImgRaw() ) );
> System.out.println( "Is Jpeg " + String.valueOf(
> img.isJpeg() ) );
>
> out.close();
> }
> catch ( IOException ie ) { ie.printStackTrace(); }
> catch ( com.lowagie.text.BadElementException be ) {}
> catch ( com.lowagie.text.DocumentException de ) {
> de.printStackTrace(); }
>
> }
>
> // OUTPUT
> Is ImgRaw true
> Is Jpeg false
>
>
> It might be important to say that if I write the scaled jpeg to a file
> with
> a
> FileOutputStream and then create an instance of com.lowagie.text.Image
> using
> this file, it works fine. But if I can skip having to create a new file
> just
> to scale done the image that would be great.
>
> Thanks for any help
> Cinzia
>
>
>
>
>
>
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