Efficient way to rotate

[cangelis]

I crop and rotate the IplImage using this way on Android but rotate() consumes much memory and application stops immediately after about 140 frames with an insufficient memory exception:

Frame frame;
        while ( (frame = grabber.grabFrame()) != null ) {
            if (frame.image == null) {
                recordAudio(frame, timeRange);
                continue;
            }
            recordVideo(frame.image, timeRange, rotation);
            Log.d("VideoPlugin", "Record: " + grabber.getFrameNumber());
        }

public void recordVideo(IplImage frame, Long[] timeLimit, Integer rotation) throws org.bytedeco.javacv.FrameRecorder.Exception, IllegalArgumentException {
        if ((grabber.getTimestamp() >= timeLimit[0]) && (grabber.getTimestamp() <= timeLimit[1])) {
            recorder.record(crop(rotate(frame, rotation)));
        }
    }

rotate:

    public IplImage rotate(IplImage src, int angle) {
        IplImage img = IplImage.create(src.height(), src.width(), src.depth(), src.nChannels());
        opencv_core.cvTranspose(src, img);
        opencv_core.cvFlip(img, img, angle);
        return img;
    }

When I remove rotate() from recorder.record() it works fine. I think something is wrong with this rotate() method. Anyway to make this more efficient? or Is something wrong with JavaCV or OpenCV?

this code works fine:

    public void recordVideo(IplImage frame, Long[] timeLimit, Integer rotation) throws org.bytedeco.javacv.FrameRecorder.Exception, IllegalArgumentException {
        if ((grabber.getTimestamp() >= timeLimit[0]) && (grabber.getTimestamp() <= timeLimit[1])) {
            recorder.record(crop(frame));
        }
    }

[cangelis]

called cvReleaseImage() after the record() and the problem is resolved. The code for the further needs:

public void recordVideo(IplImage frame, Long[] timeLimit, Integer rotation) {
        if ((grabber.getTimestamp() >= timeLimit[0]) && (grabber.getTimestamp() <= timeLimit[1])) {
            IplImage rotated = rotate(frame, rotation);
            IplImage cropped = crop(rotated);
            recorder.record(cropped);
            opencv_core.cvReleaseImage(rotated);
            opencv_core.cvReleaseImage(cropped);
        }
    }