How to rotate the bitmap in android by using c/c++ native code

Question

In My Business card reader android application , i got high resolution image/large size image, when i was rotation the that image, it will take more time some times it will show outOfMemory exception. so please help me to rotate image bitmap in C/C++ native code.`

I use below code for image rotating.

private Bitmap rotateBitmap(Bitmap source, int angle) {
        Matrix matrix = new Matrix();
        matrix.postRotate(angle);
        Bitmap createBitmap = Bitmap.createBitmap(source, 0, 0,
                source.getWidth(), source.getHeight(), matrix, true);
        source.recycle();
        return createBitmap;

    }

`

Answer 1

图像旋转仅在本机代码中发生，因此需要重写同一件事，需要改进实现，如果共享一些代码会很好

Answer 2

Have a look at solution for OutOfMemoryError:bitmap in stackoverflow you might find something there. And post your answer if you find something(I realy wonder how you deal with that:) )

I found some nice explanations when searching in google like outofmemoryexception bitmap android

and a tutorial on avoid outofmemroyexception while scaling image