RGB565 to RGB24

//在用QT显示摄想头捕获的图象时用到的
//创建一个QImage对象，用来保存RGB24图象
int x, y, r, g, b, i = 0;
QRgb *point;
unsigned char *image = get_image(fd, width, height, palette, &size); //从摄像头获取RGB565图象
QImage *img = new QImage; //保存转换后的图象
if(img->create(width, height, depth, 0, QImage:IngoreEndian)
...{
        for(y = 0; y < height; y++)
        ...{
                for(x = 0; x < width; x++)
                ...{
                        r = ((int)img[i+1] & 0xf8) >> 3;
                        g = (((int)img[i] & 0xe0) >> 5) | (((int)img[i+1] & 0x07) << 3);
                        b = (int)img & 0x1f;
                        point = (QRgb *)image->scanLine(y) + x;
                        *point = qRgb(r, g, b);
                        i += 2;
                }
        }
}