pjsip中加入G729A 等音频编码

 

加入的编码如下：

Codec	Bitrates (Kbps)	Clock rate/ samples per frame	default frames/pkt	default bitrate	VAD/DTX	PLC	Note
AMR NB	4.75 to 12.2	8000/160	4	5900	internal	internal
AMR WB	6.6 to 23.85	16000/320	1	15850	internal	internal
G.722.1	16, 24, 32, 40	16000/320	1	16000	pjmedia	internal
G.723.1	5.3, 6.3	8000/240	1	5300	internal	internal
G.726	16, 24, 32, 40	8000/80	2	-	pjmedia	pjmedia	The bitrate is negotiated in SDP
G.728	16	8000/80	2	16000	pjmedia	internal
G.729A	8	8000/80	2	8000	internal	internal	1) Annex D and Annex E is supported for receive direction.

 

一.    下载并安装 IPP and IPP samples

1．从intel官方下载

http://www.intel.com/cd/software/products/asmo-na/eng/302910.htm

或者直接从下面下

http://registrationcenter-download.intel.com/irc_nas/1103/w_ipp_ia32_p_5.3.3.082.exe

http://registrationcenter-download.intel.com/irc_nas/1103/w_ipp-samples_p_5.3.095.zip

      2.安装ipp_ia32，比如安装到C:/Program Files/Intel/IPP/5.3.3.082 文件夹下,

这里要用到破解文件可以从这个网址下载

http://www.4x4y.com/113454_CrackDown_Intel.IPP.v5.3.059.html，

另外安装的时候有个注册环境变量的选项，一定要勾选，否则编译不过去

      3.安装ipp_samples ，比如安装到C:/ ipp-samples 文件夹下

 

二. 编译 ipp_samples

编译最低要求vs2003环境，

到文件夹c:/ ipp-samples/speech-codecs下运行buildxxx.bat，

编译成功会在c:/ ipp-samples/speech-codecs/bin/win32_cl9/lib 下出现usc.lib文件

 

三．配置vs环境

Include目录加入：

C:/Program Files/Intel/IPP/5.3.3.082/ia32/include

C:/ipp-samples/speech-codecs/core/usc/include

Lib目录加入：

C:/Program Files/Intel/IPP/5.3.3.082/ia32/lib

C:/Program Files/Intel/IPP/5.3.3.082/ia32/stublib

C:/ipp-samples/speech-codecs/bin/win32_cl9/lib

以上目录放在其他目录的最顶端

 

四．在pjsip工程中加入编译条件

打开/pjproject-1.4/pjlib/include/pj/config_site.h文件加入宏定义

#define PJMEDIA_HAS_INTEL_IPP   1

 

五．重新编译pjsip