ByteBuffer into BufferedImage

Java 2D
#1

I am reading a binary file and I need to take the data and put it into a BufferedImage so I can display it. It seems like I should know how to do this, but I can’t think of it! Anyone able to help?

#2

Well, there are many ways to do something like that. You can use MemoryImageSource, or BufferedImage’s setRaster or setRGB methods.

You can find usable snippets in this thread:
http://www.java-gaming.org/forums/index.php?topic=12484.0

#3

Ok, I am having a heck of a time with this! What I have are gray scale images that have either 16bpp or 32bpp. When I wrtie them out to a file, Photoshop can read them as raw images, but I still can’t figure out how to get them into a buffered image. The setRGB() takes an integer array as an argument, so I can’t figure out how to use the 16bpp images there and when I use the 32bpp images they show up as just black! Here is the code that I am using:


// Write RAW image format
rasterData.rewind();
while(rasterData.hasRemaining())
{
    output.write(rasterData.get());
}
output.close();
	        
// Create BufferedImage
BufferedImage image = null;
if(!bit16)
{
    int[] rasterArray = new int[rasterData.capacity()/4];
    count = 0;
    while(rasterData.hasRemaining())
    {
        rasterArray[count] = rasterData.getInt();
    }
    image = new BufferedImage(cols, rows, BufferedImage.TYPE_USHORT_565_RGB);
    image.setRGB(0, 0, cols, rows, rasterArray, 0, cols);
}
	        
JFrame previewFrame = new JFrame("Image Preview");
previewFrame.setSize(cols, rows);
previewFrame.setVisible(true);
previewFrame.getContentPane().getGraphics().drawImage(image, 0, 0, null);

and I have attached one of the 16bpp images and one of the 32bpp images in a rar file. I had to rename it as .txt so just change it back to .rar

-=EDIT=-
I uploaded the wrong file initially. It’s fixed now.

#4

The first question you need to ask is, what is the format the data is in?

You say “raw” but what does that really mean? I assume it has somethign other then pixel data in it so that you know things like width and height.

What is actual format of the pixels? Is it a simple grid or isit compressed or otherwise organzized?