已经变异好的，用于将android采集的PCB音频编码成G.711 a/u law格式。
接口及用法：
public class EncG711 {
static {
try {
System.loadLibrary("G711Android");
}
catch (UnsatisfiedLinkError ule){
System.out.println("loadLibrary(G711Android),"+ule.getMessage());
}
}
private static native int linear2ulaw( int pcm_val);
private static native int linear2alaw(int pcm_val);
public static native int EnCodeG711A(byte[] indata, int nIn, byte[] outdata, int[] nOut);
public static native int EncodeG711U(byte[] indata, int nIn, byte[] outdata, int[] nOut);
}
