JPEG-2000 j2k & Codecs.SaveImage

Hi, have a question:

How can i control the progress of saving a J2K file ?

If i use RasterCodecs codecs.SaveImage, it produces a corrupted j2k file.

I´m doing it into a BackgroundWorker.

Any ideas ?

Thanks

- Jorge -

Can you post the code for your Save() method call?  What version of the toolkit are you using and what language are you programming in?

How are you wanting to control the save process?  Do you want to write the compressed data yourself to a file?

Hi again,

I´m using Leadtools Imaging Pro v16 under Visual Studio 2005 - C# (.NET)

The only thing i want is to increase a ProgressBar value, to see how the saving process goes.

The code is attached. The progress bar increases while saving, but the saved file is corrupted.

If you delete the line:
codecs.SaveImage+= new ...

the genereted file will be a correct j2k file, but then you can´t see the progress of saving.

Note 1: It´s included a generated file corrupted, created with the code.

Note 2: Original images are one paged tiffs of about 400 MB.

Thanks,

- Jorge -

Don´t know if the code was attached.
Uploading again.

Hi,

have found the same problem saving a multi-page tiff. If I use the Codecs.SaveImage to control the saving progress, the file saved is corrupted, but its ok if don´t use it.

I can post the code if you need so.

Waiting reply.

Hi.

Still waiting. Please i need a reply.

Sorry for the delay.  I was out of the office for Thanksgiving holiday.  I will take a look at your project and reply back with my results.

Hello Jorge,

With the SaveImage event you have to handle the setting of the buffer like this:

        void codecs_SaveImage(object sender, CodecsSaveImageEventArgs e)
        {
            // This line sets the buffer.
            e.Image.GetRow(e.Row, e.Buffer, e.Length);

            // Your code.
            int valPro = ((e.Row * 100) / e.Image.Height) % 100;
            tareaSalva.ReportProgress(valPro);
        }

Otherwise the buffer will stay empty.  I tested it out and now it works fine.

I'll try it. Suposse that in the Multipaged Tiff case it will be the same problem.

Lots of thanks, jigar.

Yes, it will work with multipage files too, but you will have to add one more line of code.  You'll have to do this before you call e.Image.GetRow():

e.Image.Page = e.Page;

You first have to set the correct page as above and then do the rest.