一个24位的BMP图2x2象素都是白色,16位数据如下00000000h: 42 4D 48 00 00 00 00 00 00 00 36 00 00 00 28 00
00000010h: 00 00 02 00 00 00 02 00 00 00 01 00 18 00 00 00
00000020h: 00 00 12 00 00 00 A1 6B 00 00 A1 6B 00 00 00 00
00000030h: 00 00 00 00 00 00 FF FF FF FF FF FF 00 00 FF FF
00000040h: FF FF FF FF 00 00 00 00 对于图像数据部分有些不明白,也就是FF开始,看书上提到的都是说一行数据字节数需要是4的倍数,那么对于FF FF FF FF FF FF是6个字节,需补00 00,没问题,但是接下来的数据有点不明白,为啥补了00 00 00 00?
查了书和网上的资料,都只说到一行图像数据需要补0,没说文件也需要补0至4字节的倍数啊
00000010h: 00 00 02 00 00 00 02 00 00 00 01 00 18 00 00 00
00000020h: 00 00 12 00 00 00 A1 6B 00 00 A1 6B 00 00 00 00
00000030h: 00 00 00 00 00 00 FF FF FF FF FF FF 00 00 FF FF
00000040h: FF FF FF FF 00 00 00 00 对于图像数据部分有些不明白,也就是FF开始,看书上提到的都是说一行数据字节数需要是4的倍数,那么对于FF FF FF FF FF FF是6个字节,需补00 00,没问题,但是接下来的数据有点不明白,为啥补了00 00 00 00?
查了书和网上的资料,都只说到一行图像数据需要补0,没说文件也需要补0至4字节的倍数啊
FF FF FF FF FF FF 00 00
FF FF FF FF FF FF 00 00 00 00 多出来的是尾巴,无用的