I'm creating an app that takes pictures in .dng format in order to process them. I'm using the camera2 API. I was able to take pictures and save them into my smartphone Android 13, but in .jpg format. But when I change my code in order to save them with .dng extension, I get an error.
The part of my code that takes and saves the picture is as follows:
Size largest = choosePictureSize(map.getOutputSizes(ImageFormat.RAW_SENSOR));
mImageReader = ImageReader.newInstance(largest.getWidth(), largest.getHeight(),
ImageFormat.RAW_SENSOR, /*maxImages*/1);
mImageReader.setOnImageAvailableListener(mOnImageAvailableListener, mBackgroundHandler);
private String getPictureFilePath(Context context) {
final File dir = context.getExternalFilesDir(null);
return (dir == null ? "" : (dir.getAbsolutePath() + "/"))
+ System.currentTimeMillis() + ".dng";
}
Listener:
case ImageFormat.RAW_SENSOR: {
DngCreator dngCreator = new DngCreator(mCameraCharacteristics, mCaptureResult);
FileOutputStream output = null;
try {
output = new FileOutputStream(mFile);
dngCreator.writeImage(output, mImage);
} catch (IOException e) {
e.printStackTrace();
} finally {
mImage.close();
if (null != output) {
try {
output.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
break;
}
@Override
public void onCaptureProgressed(@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request,
@NonNull CaptureResult partialResult) {
process(partialResult);
}
@Override
public void onCaptureCompleted(@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request,
@NonNull TotalCaptureResult result) {
process(result);
}
I'm having this error:
java.lang.IllegalArgumentException: Null argument to DngCreator constructor
