initial commit

[kaka/cakelight.git] / src / kaka / cakelight / FrameGrabber.java

package kaka.cakelight;

import java.io.*;

public class FrameGrabber {
    private Configuration config;
    private File file;
    private int bytesPerFrame;
    private InputStream fileStream;

    private FrameGrabber() {
    }

    public static FrameGrabber from(Configuration config) {
        FrameGrabber fg = new FrameGrabber();
        fg.config = config;
        fg.file = new File(config.video.device);
        fg.bytesPerFrame = config.video.width * config.video.height * config.video.bpp;
        return fg;
    }

    public boolean prepare() {
        try {
            fileStream = new FileInputStream(file);
            return true;
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return false;
        }
    }

    public Frame grabFrame() {
        try {
            byte[] data = new byte[bytesPerFrame];
            int count = fileStream.read(data);
            System.out.println("count = " + count);
            return Frame.of(data, config);
        } catch (IOException e) {
            e.printStackTrace();
        }

        return null;
    }

    public void close() {
        try {
            fileStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}