说明：  本代码用C语言实现了这个标 ETSI 300 744v1.05.，另外做了很大的优化，达到实时的编码。并且，提供了详细的程序及标准的说明文档，有非常大的实用价值。
(The code using C language to implement this standard ETSI 300 744v1.05., Also do a lot of optimization, real time encoding. And provides a detailed description of the procedures and standards documents, there are very large practical value.)