I want to extend FilterOutputStream to write out the orientation in my output stream:

FileOutputStream out = new ExifOrientationOutStream(path, orientation);
bitmap.compress(Bitmap.CompressFormat.JPEG, 80, out);
out.flush();

I appreciate it if you can guide me in the correct direction to write a ExifOrientationOutStream

@eicm Can you file a new issue? That might be a little out of scope for the project though. When do you want to write out the exif orientation?

I'm not sure it would be in the scope of the project, do you want me to open it as a new issue?
My personal usage is glide related but doesn't fit in the project as a feature. When I download a bitmap and want to write it to the disk, I already have downloaded the meta data for that media. I want to write in the Exif orientation in an optimized way so when I use glide to load that image with the correct orientation.

EndPointManager.downloadImage(context, Request.Priority.NORMAL, url,  new Listener<Bitmap>() {
    @Override
    public void onResponse(Bitmap bitmap) {
        ...
        FileOutputStream out = new ExifOrientationOutStream(path, orientation); 
        bitmap.compress(Bitmap.CompressFormat.JPEG, 80, out);
        out.flush();
        ...

Yes, new questions should be in new issues (you can reference other use ones by number if you want more context in the new one.)

Why don't you just rotate the Bitmap based on orientation before writing? I'm sure you can find simple utility methods for that by Googling.

I'm rotating it in the onResourceReady() call back based on the orientation. I understand it's out of the scope, don't worry about it I will find it myself.