3parts.sgml

来自「可用该程序将avi的电影文件转化为TS流」· SGML 代码 · 共 71 行

<chapter><title>Parts of vls in more details</title>

Here is the global VLS framework :

<mediaobject>
  <imageobject>
    <imagedata fileref="stream_send.eps" format="EPS" scalefit="1" scale="90">
  </imageobject>
  <imageobject>
    <imagedata fileref="stream_send.jpg" format="JPG">
  </imageobject>
  <textobject>
    <phrase>Sequence diagram</phrase>
  </textobject>
</mediaobject>

We can isolate 3 major parts :

<variablelist>
the "source" thread (Reader+Converter)
which takes the data from the media and format them into TS packets.
</variablelist>

<sect1><title>The </title>

<para>

Here is a simplified sequence diagram to show what happens when a "start"
command is sent through the telnet interface:

<mediaobject>
  <imageobject>
    <imagedata fileref="stream_start.eps" format="EPS" scalefit="1" scale="90">
  </imageobject>
  <imageobject>
    <imagedata fileref="stream_start.jpg" format="JPG">
  </imageobject>
  <textobject>
    <phrase>Sequence diagram</phrase>
  </textobject>
</mediaobject>

</para>
</sect1>

<sect1><title>How is a TS packet sent ?</title>

<para>

<mediaobject>
  <imageobject>
    <imagedata fileref="stream_send.eps" format="EPS" scalefit="1" scale="90">
  </imageobject>
  <imageobject>
    <imagedata fileref="stream_send.jpg" format="JPG">
  </imageobject>
  <textobject>
    <phrase>Sequence diagram</phrase>
  </textobject>
</mediaobject>

The Packet Handler (C_SyncFifo) is shared between two threads: in one thread 
the Converter pushes TS packets in the fifo, and in another thread the Streamer
pops them.

</para>
</sect1>

</chapter>