Need help for functionalities like Brightness and Contrast
Which package to use for getting image transformation functionalities like Brightness and Contrast?
Description:
Currently I am using 揝un Java?Wireless Toolkit 2.5 for CLDC, Beta 2 ?toolkit for developing J2ME applications. I need to add effects like Brightness and Contrast to an image(JPEG ,PNG, etc). For this I am using the 搄avax.microedition.amms.control.imageeffect?package (JSR 234). In this package I found that I need to use the ImageTonalityControl to set various image settings such as brightness, contrast and gamma. But if I use this control using the following code fragment,
private MediaProcessor mp;
mp = GlobalManager.createMediaProcessor("image/jpeg");
mp.addMediaProcessorListener(this);
outputStream = new ByteArrayOutputStream();
inputStream = getClass().getResourceAsStream("/images/lenna.jpg");
mp.setInput(inputStream, MediaProcessor.UNKNOWN);
mp.setOutput(outputStream);
itc = (ImageTonalityControl)mp.getControl ("javax.microedition.amms.control.imageeffect.ImageTonalityControl");
I get a Null Pointer Exception. Using the above code snippet I am not able to create the ImageTonalityControl object. If I proceed further with that itc reference I get a Null Pointer Exception. I think ImageTonalityControl is not supported by this toolkit. Is it so? Are there any other toolkits with full JSR 234 support. Are there anyother API for obtaining this functionality?
