jrtplib 编译安装配置[通俗易懂]

2022-09-19 10:05:36 浏览数 (1)

大家好,又见面了,我是你们的朋友全栈君。

RTP 是目前解决流媒体实时传输问题的最好办法,而JRTPLIB 是一个用C 语言实现的RTP库,包括UDP通讯,它的主页地址是:Jori’s page

jrtplib 源码的获取,可以在它的主页上直接下载,也可以使用git 直接克隆一份。因为它的主页是国外网站,下载速度非常慢,我这里提供一份已经下载好的最新的jrtplib源码:jrtplib-3.11.1.tar.gz

我这里介绍JRTPLIB在ubuntu系统中的编译安装以及配置

(1)下载源码:

git clone https://github.com/j0r1/JRTPLIB.git

(2)安装cmake

sudo apt install cmake

(3)生成Makefile 文件

sudo cmake CMakeLists.txt

(4)编译

make

(5)安装

sudo make install

可以看到已经安装到下面的路径去了:

代码语言:javascript复制
.....................
-- Installing: /usr/local/include/jrtplib3/rtpudpv4transmitter.h
-- Installing: /usr/local/include/jrtplib3/rtpudpv6transmitter.h
-- Installing: /usr/local/include/jrtplib3/rtpbyteaddress.h
-- Installing: /usr/local/include/jrtplib3/rtpexternaltransmitter.h
-- Installing: /usr/local/include/jrtplib3/rtpsecuresession.h
-- Installing: /usr/local/include/jrtplib3/rtpsocketutil.h
-- Installing: /usr/local/include/jrtplib3/rtpabortdescriptors.h
-- Installing: /usr/local/include/jrtplib3/rtpselect.h
-- Installing: /usr/local/include/jrtplib3/rtptcpaddress.h
-- Installing: /usr/local/include/jrtplib3/rtptcptransmitter.h
-- Installing: /usr/local/include/jrtplib3/rtpfaketransmitter.h
-- Installing: /usr/local/lib/libjrtp.a
-- Installing: /usr/local/lib/libjrtp.so.3.11.1
-- Installing: /usr/local/lib/libjrtp.so

(6)修改头文件引用

这个时候编译jrtplib 自带的示例程序,会出现下面的错误:

代码语言:javascript复制
licaibiao@lcb:~/test/RTP/JRTPLIB/examples$ g   example1.cpp -o test -ljrtp
example1.cpp:6:24: fatal error: rtpsession.h: No such file or directory
compilation terminated.
licaibiao@lcb:~/test/RTP/JRTPLIB/examples$ 

这个是头文件路径不对引起的。可以直接修改头文件的引用,如下:

代码语言:javascript复制
licaibiao@lcb:~/test/RTP/JRTPLIB/examples$ vim example1.cpp 
  1 /*
  2    Here's a small IPv4 example: it asks for a portbase and a destination and 
  3    starts sending packets to that destination.
  4 */
  5 
  6 #include <jrtplib3/rtpsession.h>
  7 #include <jrtplib3/rtpudpv4transmitter.h>
  8 #include <jrtplib3/rtpipv4address.h>
  9 #include <jrtplib3/rtpsessionparams.h>
 10 #include <jrtplib3/rtperrors.h>
 11 #include <jrtplib3/rtplibraryversion.h>
 12 #include <stdlib.h>
 13 #include <stdio.h>
 14 #include <iostream>
 15 #include <string>

修改后可编译通过并生成可执行文件

代码语言:javascript复制
"example1.cpp" 147L, 3436C written                                                                                                             
licaibiao@lcb:~/test/RTP/JRTPLIB/examples$ g   example1.cpp -o test -ljrtp
licaibiao@lcb:~/test/RTP/JRTPLIB/examples$ ls
CMakeFiles           CMakeLists.txt  example2.cpp  example4.cpp  example6.cpp  example8.cpp  test
cmake_install.cmake  example1.cpp    example3.cpp  example5.cpp  example7.cpp  Makefile
licaibiao@lcb:~/test/RTP/JRTPLIB/examples$ 

(7)配置共享链接库

直接运行上面生成的test 文件会出现下面的问题:

代码语言:javascript复制
licaibiao@lcb:~/test/RTP/JRTPLIB/examples$ ./test 
./test: error while loading shared libraries: libjrtp.so.3.11.1: cannot open shared object file: No such file or directory
licaibiao@lcb:~/test/RTP/JRTPLIB/examples$ 

这个是共享连接库连接不到的问题,执行下面命令:

代码语言:javascript复制
sudo ln -s /usr/local/lib/libjrtp.so.3.11.1 /usr/lib/

之后运行程序,可正常运行。

代码语言:javascript复制
licaibiao@lcb:~/test/RTP/JRTPLIB/examples$ ./test 
Using version 3.11.1
Enter local portbase:
6666

Enter the destination IP address
192.168.0.6
Enter the destination port
6666

Number of packets you wish to be sent:
10

Sending packet 1/10

Sending packet 2/10

Sending packet 3/10

Sending packet 4/10

Sending packet 5/10

Sending packet 6/10

Sending packet 7/10

Sending packet 8/10

Sending packet 9/10

Sending packet 10/10
licaibiao@lcb:~/test/RTP/JRTPLIB/examples$ 

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