blackberry image processing [closed] - blackberry

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Closed 10 years ago.
I am very new to Blackberry development.
I am working with an Blackberry project.
In this project i want to change image effects and control.!
Image effects are sepia,sketch,grayscale,negative ,flip etc
and controls are brightness,contrast,hue etc
I have tried for flip image effect. following is code that i hav tried..
I got the output but it is overlapped with original image.
[image effect-flip output]
anybody can solve this issue??
Bitmap flip(Bitmap bitmap) {
int[] argb = new int[bitmap.getWidth() * bitmap.getHeight()];
bitmap.getARGB(argb, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
for (int i = 0; i < bitmap.getHeight(); i++) {
for (int j = 0; j < bitmap.getWidth(); j++) {
int swap = argb[i * bitmap.getWidth() + j];
argb[(bitmap.getHeight() - 1 - i) * bitmap.getWidth() + j] = swap;
}
}
//bitmap.setARGB(data, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
Graphics gr=new Graphics(bitmap);
gr.clear(0, 0, bitmap.getWidth(), bitmap.getHeight());
bitmap.setARGB(argb, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
return bitmap;
}
anybody can solve this issue??

Answer 1

You need to flip on a new argb (called argb_flip) as in:
public Bitmap flip(Bitmap bitmap) {
int[] argb = new int[bitmap.getWidth() * bitmap.getHeight()];
int[] argb_flip = new int[bitmap.getWidth() * bitmap.getHeight()];
bitmap.getARGB(argb, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
for (int i = 0; i < bitmap.getHeight(); i++) {
for (int j = 0; j < bitmap.getWidth(); j++) {
int swap = argb[i * bitmap.getWidth() + j];
argb_flip[(bitmap.getHeight() - 1 - i) * bitmap.getWidth() + j] = swap;
}
}
bitmap.setARGB(argb_flip, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
return bitmap;
}