B4J Question Image file formats supported using output stream

[canalrun]

Hello,
I am basically using the following code to write an image to a file:

  Dim ops As OutputStream = File.OpenOutput(ofd, ofn, True)

  can.snapshot.WriteToStream(ops)       
  ops.Close

Where can is a canvas and my output filename, ofn, has the .jpg extension. I seem to be getting JPEG files output. I see the docs mention PNG's, I suppose if I used a .png extension.

Are other file formats supported, for example Tiff if I use a .tiff file name extension?

Thanks,
Barry.

 

[LucaMs]

Are other file formats supported, for example Tiff if I use a .tiff file name extension?

When I have a question like that, I try

However, it seems to me that these are the supported formats:
https://docs.oracle.com/javase/7/docs/api/javax/imageio/package-summary.html

 

[canalrun]

When I have a question like that, I try

However, it seems to me that these are the supported formats:
https://docs.oracle.com/javase/7/docs/api/javax/imageio/package-summary.html

Thanks for the pointer to imagio. If I search the forums for "B4J imagio", I get quite a few matches. I will have to look at these more carefully.

Barry.

 

[Erel]

Only PNG is supported.

 

[canalrun]

Thanks. Yes, I thought I was getting JPEG's, but I found a file type checker and it reported that the images are in fact PNG's.

There are quite a few posts in these forums about a Java library, imageio. The posts mention using JavaObject to access the library. Is that the preferred access method?

I assume that imageio is a Java jar that I must download from somewhere.

Barry.

 

[Erel]

I'm not familiar with this library so I don't know...

 

[canalrun]

I found a solution in these forms. It converts a PNG file to a JPEG:

https://www.b4x.com/android/forum/threads/save-canvas-in-jpg.42839/#post-259751

Thanks.