images.java

j2me 图片打包

/*
 * Images.java
 *
 * Generated by BamFS - Bambalam J2ME filesystem
 *
 */

package game;

 
import javax.microedition.lcdui.*;
import java.io.*;
 
public class Images {
    final static int BALL_1_1_PNG = 0;
    final static int BALL_1_2_PNG = 1;
    final static int BALL_1_3_PNG = 2;
    final static int BALL_1_4_PNG = 3;
    final static int BALL_1_5_PNG = 4;
    final static int BFS_EOF = 5;

    static int[] bfs_files;


    private static String bfs_filename = "/images.bfs";
	
    private static void getFileTable() {
        if(bfs_files==null) {
            try{
                byte[] file = new byte[1];
                DataInputStream din = new DataInputStream(file.getClass().getResourceAsStream(bfs_filename));
                int num_files = din.readInt();
                bfs_files = new int[num_files];
                int offset = 0;
                int header_size = num_files * 4 + 4;
                for(int i=0;i<num_files;i++) {
                    offset = din.readInt();
                    bfs_files[i] = offset + header_size;
                }
                din.close();
            } catch(Exception e) {
                System.out.println("BamFS getFileTable error: "+e.toString());
            }
        }
    }
    
    public static InputStream getFileAsStream(int file_id) {
        getFileTable();
        if(preloaded_data_file==null) {
            byte[] file = getFile(file_id);
            ByteArrayInputStream bis = new ByteArrayInputStream(file);
            return bis;
        } else {
            int size = bfs_files[file_id+1]-bfs_files[file_id];
            int offset = bfs_files[file_id];
            ByteArrayInputStream bis = new ByteArrayInputStream(preloaded_data_file,offset,size);
            return bis;
        }
    }
    
    private static byte[] preloaded_data_file = null;
    
    public static void preload_files() {
        getFileTable();
        if(preloaded_data_file==null) {
            byte[] file = new byte[1];
            try{
                DataInputStream din = new DataInputStream(file.getClass().getResourceAsStream(bfs_filename));
                preloaded_data_file = new byte[bfs_files[BFS_EOF]];
                din.read(preloaded_data_file);
                din.close();
            } catch(Exception e) {
                System.out.println("BamFS preload_files error: "+e.toString());
            }
        }
    }
    
    public static void free_preloaded_files() {
        preloaded_data_file = null;
        System.gc();
    }
    
    public static byte[] getFile(int file_id) {
        getFileTable();
        byte[] file = new byte[1];
        try{
            DataInputStream din = new DataInputStream(file.getClass().getResourceAsStream(bfs_filename));
            int size = bfs_files[file_id+1]-bfs_files[file_id];
            int offset = bfs_files[file_id];
            file = new byte[size];
            din.skipBytes(offset);
            din.read(file);
            din.close();
        } catch(Exception e) {
            System.out.println("BamFS getFile error: "+e.toString());
        }
        return file;
    }
    
    public static Image createImage(int file_id) {
        getFileTable();
        Image return_img = null;
        try{
            if(preloaded_data_file==null) {
                byte[] img = getFile(file_id);
                return_img = Image.createImage(img,0,img.length);
                img = null;
            } else {
                int size = bfs_files[file_id+1]-bfs_files[file_id];
                int offset = bfs_files[file_id];
                return_img = Image.createImage(preloaded_data_file,offset,size);
            }
        } catch(Exception e) {
            System.out.println("BamFS createImage error:"+e.toString());
        }
        return return_img;
    }
}