Java TGA加载器

Question

我正在寻找Java的小型免费TGA图像加载类或库。理想情况下，结果是BufferedImage。

是的，我已经用Google搜索过，但是大多数结果已经过时了，或者是很大的库，其中包含很多我不需要的其他内容。我正在寻找可以读取TGA图像的小而简单的东西。

谢谢！

Answer 1

我们使用从某些开源项目复制的此类读取TGA文件。真的很旧 它只能处理具有最基本编码的Targa文件。试试看。

public class TargaReader
{
        public static Image getImage(String fileName) throws IOException
        {
                File f = new File(fileName);
                byte[] buf = new byte[(int)f.length()];
                BufferedInputStream bis = new BufferedInputStream(new FileInputStream(f));
                bis.read(buf);
                bis.close();
                return decode(buf);
        }

        private static int offset;

        private static int btoi(byte b)
        {
                int a = b;
                return (a<0?256+a:a);
        }

        private static int read(byte[] buf)
        {
                return btoi(buf[offset++]);
        }

        public static Image decode(byte[] buf) throws IOException
        {
                offset = 0;

                // Reading header
                for (int i=0;i<12;i++)
                        read(buf);
                int width = read(buf)+(read(buf)<<8);
                int height = read(buf)+(read(buf)<<8);
                read(buf);
                read(buf);

                // Reading data
                int n = width*height;
                int[] pixels = new int[n];
                int idx=0;

                while (n>0)
                {
                        int nb = read(buf);
                        if ((nb&0x80)==0)
                        {
                                for (int i=0;i<=nb;i++)
                                {
                                        int b = read(buf);
                                        int g = read(buf);
                                        int r = read(buf);
                                        pixels[idx++] = 0xff000000 | (r<<16) | (g<<8) | b;
                                }
                        }
                        else
                        {
                                nb &= 0x7f;
                                int b = read(buf);
                                int g = read(buf);
                                int r = read(buf);
                                int v = 0xff000000 | (r<<16) | (g<<8) | b;
                                for (int i=0;i<=nb;i++)
                                        pixels[idx++] = v;
                        }
                        n-=nb+1;
                }

                BufferedImage bimg = new BufferedImage(width,height,BufferedImage.TYPE_INT_ARGB);
                bimg.setRGB(0,0,width,height,pixels,0,width);
                return bimg;
        }
}