使用mediastreamer2的g711common.h. unsigned char s16_to_alaw(int pcm_val). 将16bit的原始样本encode 成为8bit的a-law码.-use mediastreamer2 the g711common.h. Unsign ed char s16_to_alaw (int pcm_val). to the original 16bit samples The encode into a 8 bit-law code.

一个很不错的基于SIP的voip软件电话，基本可用的-A very good SIP-based voip software phones, the basic available

mediastream2源码分析，voip开发必备资料(Mediastream2 source analysis, VoIP development essential information)