Author: CaoHu
E-Mail: [email protected] Version:0.1 Date: 2018-01-29 10:28
Description: My level is limited, if there are some weaknesses, welcome criticism. If the content of the blog is involved in infringement, please contact my mailbox, it will be deleted immediately, welcome to exchange, learn from each other!

上一篇文章簡單敘述了一下流媒體直播的整體方案和所用到的工具，接下來的文章將是根據具體的每個部分的實際程式碼實現了。。。閒話少說，首先我們從各種庫的交叉編譯開始，這裡我們首先介紹搭建RTSP伺服器的開源庫live555的arm板交叉編譯。
首先，我們需要到live555的官網去下載他的原始碼包，我下載的是最新版,網址如下：
http://www.live555.com/liveMedia/public/
接下來，我們需要將下載的原始碼包複製到虛擬機器中（linux系統中），可以自己建立自己的目錄，這裡我是放在自己的/home/使用者名稱/share/rtsp_live目錄下，具體操作命令如下：

root@kubuntu
 
:/home/frank/share/ tar zxvf live555-latest.tar.gz  
root@kubuntu:/home/frank/share/# cd live  
root@kubuntu:/home/frank/live#  

解壓完我們的原始碼包，接下來需要配置我們的makefile，剛開始我使用的 cp config.armlinux config.imx6,但是ubuntu給我報了個錯誤，找不到config.config.imx6 file or directory之前在ubuntu12.04沒有出現這種錯誤，接下來我使用cp config.armlinux imx6，接著sudo vim imx6進入配置檔案，將其編譯器修改為我們自己使用的編譯器，然後./genMakefiles imx6，成功沒有報錯，接著make clean， make。接下來我們進入mediaServer目錄準備測試一下自己的交叉編譯是否成功。因為原始碼庫沒有提供h.264檔案，這裡提供一個h.264檔案的下載連結。將其複製到mensiaserver目錄下即可。

“`
[email protected] /mnt/rtsp_live/livecdmediaServer/root@ltt/mnt/rtsplive/live/mediaServer$cdmediaServer/root@ltt/mnt/rts{p}_{l}ive/live/mediaServer$ ls
COPYING Makefile live555MediaServer.o
COPYING.LESSER Makefile.head test.264
DynamicRTSPServer.cpp Makefile.tail version.hh
DynamicRTSPServer.hh live555MediaServer
DynamicRTSPServer.o live555MediaServer.cpp
[email protected] /mnt/rtsp_live/live/mediaServer$ ./live555MediaServer
LIVE555 Media Server
version 0.91 (LIVE555 Streaming Media library version 2017.09.12).
Play streams from this server using the URL
rtsp://0.0.0.0/
where is a file present in the current directory.
Each file’s type is inferred from its name suffix:
“.264” => a H.264 Video Elementary Stream file
“.265” => a H.265 Video Elementary Stream file
“.aac” => an AAC Audio (ADTS format) file
“.ac3” => an AC-3 Audio file
“.amr” => an AMR Audio file
“.dv” => a DV Video file
“.m4e” => a MPEG-4 Video Elementary Stream file
“.mkv” => a Matroska audio+video+(optional)subtitles file
“.mp3” => a MPEG-1 or 2 Audio file
“.mpg” => a MPEG-1 or 2 Program Stream (audio+video) file
“.ogg” or “.ogv” or “.opus” => an Ogg audio and/or video file
“.ts” => a MPEG Transport Stream file
(a “.tsx” index file - if present - provides server ‘trick play’ support)
“.vob” => a VOB (MPEG-2 video with AC-3 audio) file
“.wav” => a WAV Audio file
“.webm” => a WebM audio(Vorbis)+video(VP8) file
See http://www.live555.com/mediaServer/ for additional documentation.
(We use port 8000 for optional RTSP-over-HTTP tunneling, or for HTTP live streaming (for indexed Transport Stream f我==/dissolve/70/gravity/SouthEast。。 這裡測試影響不大，可以直接在vlc播
器中開啟網路串流來播放視訊。接下來就可以欣賞流媒體播放的視訊了。