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<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Chapter 12. Customize Stream Paths</title><link rel="stylesheet" href="html.css" type="text/css"><meta name="generator" content="DocBook XSL-NS Stylesheets V1.74.0"><link rel="home" href="index.html" title="Red5 - Reference Documentation"><link rel="up" href="core-components.html" title="Part II. Red5 Core Components"><link rel="prev" href="tomcat-deployment.html" title="Chapter 11. Deploying Red5 To Tomcat"><link rel="next" href="security.html" title="Chapter 13. Security"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div xmlns="http://www.w3.org/TR/xhtml1/transitional" style="background-color:white;border:none;height:73px;border:1px solid black;"><a style="border:none;" href="http://osflash.org/red5" title="Red5 Open Source Flash Server"><img style="border:none;" src="images/red5-banner.png"></img></a><a style="border:none;" href="http://osflash.org/red5" title="Red5 Open Source Flash Server"><img style="border:none;position:absolute;padding-top:5px;right:42px;" src="images/red5-banner-logo.png"></img></a></div><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="stream-paths"></a>Chapter 12. Customize Stream Paths</h2></div></div></div><p>This document describes how applications can stream ondemand videos (VOD) from or
record to custom directories other than the default streams folder inside the webapp. </p><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="d0e3362"></a>12.1. Filename generator service</h2></div></div></div><p>Red5 uses a concept called scope services for functionality that is provided for a certain
scope. One of these scope services is IStreamFilenameGenerator
<a class="link" href="http://dl.fancycode.com/red5/api/org/red5/server/api/stream/IStreamFilenameGenerator.html" target="_top">http://dl.fancycode.com/red5/api/org/red5/server/api/stream/IStreamFilenameGenerator.html</a> that generates
filenames for VOD streams that should be played or recorded.
</p></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="d0e3370"></a>12.2. Custom generator</h2></div></div></div><p>To generate filename in different folders, a new filename generator must be implemented: </p><pre class="programlisting">
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">import</font> org.red5.server.api.IScope;
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">import</font> org.red5.server.api.stream.IStreamFilenameGenerator;
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">public</font> <font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">class</font> CustomFilenameGenerator <font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">implements</font> IStreamFilenameGenerator {
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-style="italic" color="grey">/** Path that will store recorded videos. */</font>
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">public</font> String recordPath = <b class="hl-string"><i style="color:red">"recordedStreams/"</i></b>;
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-style="italic" color="grey">/** Path that contains VOD streams. */</font>
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">public</font> String playbackPath = <b class="hl-string"><i style="color:red">"videoStreams/"</i></b>;
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-style="italic" color="grey">/** Set if the path is absolute or relative */</font>
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">public</font> <font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">boolean</font> resolvesAbsolutePath = false;
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">public</font> String generateFilename(IScope scope, String name, GenerationType type) {
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-style="italic" color="grey">// Generate filename without an extension. </font>
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">return</font> generateFilename(scope, name, null, type);
}
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">public</font> String generateFilename(IScope scope, String name, String extension, GenerationType type) {
String filename;
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">if</font> (type == GenerationType.RECORD)
filename = recordPath + name;
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">else</font>
filename = playbackPath + name;
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">if</font> (extension != null)
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-style="italic" color="grey">// Add extension </font>
filename += extension;
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">return</font> filename;
}
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">public</font> <font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">boolean</font> resolvesToAbsolutePath()
{
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">return</font> resolvesAbsolutePath;
}
}
</pre><p>The above class will generate filenames for recorded streams like recordedStreams/
red5RecordDemo1234.flv and use the directory videoStreams as source for all VOD
streams.</p></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="d0e3379"></a>12.3. Activate custom generator</h2></div></div></div><p>In the next step, the custom generator must be activate in the configuration files for the
desired application. </p><p>Add the following definition to yourApp/WEB-INF/red5-web.xml: </p><pre class="programlisting">
<b class="hl-tag" style="color: blue"><bean</b> <span class="hl-attribute" style="color: blue">id</span>=<span class="hl-value" style="color: blue">"streamFilenameGenerator"</span>
<span class="hl-attribute" style="color: blue">class</span>=<span class="hl-value" style="color: blue">"path.to.your.CustomFilenameGenerator"</span><b class="hl-tag" style="color: blue"> /></b>
</pre><p>This will use the class defined above to generate stream filenames. </p></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="d0e3390"></a>12.4. Change paths through configuration</h2></div></div></div><p>While the class described here works as expected, it's a bit unhandy to change the paths
inside the code as every change requires recompilation of the class. </p><p>Therefore you can pass parameters to the bean defined in the previous step to specify the
paths to use inside the configuration file. </p><p>Add three methods to your class that will be executed while the configuration file is parsed:</p><pre class="programlisting">
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">public</font> <font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">void</font> setRecordPath(String path) {
recordPath = path;
}
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">public</font> <font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">void</font> setPlaybackPath(String path) {
playbackPath = path;
}
<font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">public</font> <font xmlns="http://www.w3.org/TR/xhtml1/transitional" font-weight="bold" color="blue">void</font> setAbsolutePath(Boolean absolute) {
resolvesAbsolutePath = absolute;
}
</pre><p>Now you can set the paths inside the bean definition: </p><pre class="programlisting">
<b class="hl-tag" style="color: blue"><bean</b> <span class="hl-attribute" style="color: blue">id</span>=<span class="hl-value" style="color: blue">"streamFilenameGenerator"</span>
<span class="hl-attribute" style="color: blue">class</span>=<span class="hl-value" style="color: blue">"path.to.your.CustomFilenameGenerator"</span><b class="hl-tag" style="color: blue">></b>
<b class="hl-tag" style="color: blue"><property</b> <span class="hl-attribute" style="color: blue">name</span>=<span class="hl-value" style="color: blue">"recordPath"</span> <span class="hl-attribute" style="color: blue">value</span>=<span class="hl-value" style="color: blue">"recordedStreams/"</span><b class="hl-tag" style="color: blue"> /></b>
<b class="hl-tag" style="color: blue"><property</b> <span class="hl-attribute" style="color: blue">name</span>=<span class="hl-value" style="color: blue">"playbackPath"</span> <span class="hl-attribute" style="color: blue">value</span>=<span class="hl-value" style="color: blue">"videoStreams/"</span><b class="hl-tag" style="color: blue"> /></b>
<b class="hl-tag" style="color: blue"><property</b> <span class="hl-attribute" style="color: blue">name</span>=<span class="hl-value" style="color: blue">"absolutePath"</span> <span class="hl-attribute" style="color: blue">value</span>=<span class="hl-value" style="color: blue">"false"</span><b class="hl-tag" style="color: blue"> /></b>
<b class="hl-tag" style="color: blue"></bean></b>
<b class="hl-tag" style="color: blue"><bean</b> <span class="hl-attribute" style="color: blue">id</span>=<span class="hl-value" style="color: blue">"streamFilenameGenerator"</span>
<span class="hl-attribute" style="color: blue">class</span>=<span class="hl-value" style="color: blue">"path.to.your.CustomFilenameGenerator"</span><b class="hl-tag" style="color: blue">></b>
<b class="hl-tag" style="color: blue"><property</b> <span class="hl-attribute" style="color: blue">name</span>=<span class="hl-value" style="color: blue">"recordPath"</span> <span class="hl-attribute" style="color: blue">value</span>=<span class="hl-value" style="color: blue">"/path/to/recordedStreams/"</span><b class="hl-tag" style="color: blue"> /></b>
<b class="hl-tag" style="color: blue"><property</b> <span class="hl-attribute" style="color: blue">name</span>=<span class="hl-value" style="color: blue">"playbackPath"</span> <span class="hl-attribute" style="color: blue">value</span>=<span class="hl-value" style="color: blue">"/path/to/videoStreams/"</span><b class="hl-tag" style="color: blue"> /></b>
<b class="hl-tag" style="color: blue"><property</b> <span class="hl-attribute" style="color: blue">name</span>=<span class="hl-value" style="color: blue">"absolutePath"</span> <span class="hl-attribute" style="color: blue">value</span>=<span class="hl-value" style="color: blue">"true"</span><b class="hl-tag" style="color: blue"> /></b>
<b class="hl-tag" style="color: blue"></bean></b>
</pre><p>You can also move the paths to the yourApp/WEB-INF/red5-web.properties file and use
parameters to access them: </p><pre class="programlisting">
<b class="hl-tag" style="color: blue"><bean</b> <span class="hl-attribute" style="color: blue">id</span>=<span class="hl-value" style="color: blue">"streamFilenameGenerator"</span>
<span class="hl-attribute" style="color: blue">class</span>=<span class="hl-value" style="color: blue">"path.to.your.CustomFilenameGenerator"</span><b class="hl-tag" style="color: blue">></b>
<b class="hl-tag" style="color: blue"><property</b> <span class="hl-attribute" style="color: blue">name</span>=<span class="hl-value" style="color: blue">"recordPath"</span> <span class="hl-attribute" style="color: blue">value</span>=<span class="hl-value" style="color: blue">"${recordPath}"</span><b class="hl-tag" style="color: blue"> /></b>
<b class="hl-tag" style="color: blue"><property</b> <span class="hl-attribute" style="color: blue">name</span>=<span class="hl-value" style="color: blue">"playbackPath"</span> <span class="hl-attribute" style="color: blue">value</span>=<span class="hl-value" style="color: blue">"${playbackPath}"</span><b class="hl-tag" style="color: blue"> /></b>
<b class="hl-tag" style="color: blue"><property</b> <span class="hl-attribute" style="color: blue">name</span>=<span class="hl-value" style="color: blue">"absolutePath"</span> <span class="hl-attribute" style="color: blue">value</span>=<span class="hl-value" style="color: blue">"${absolutePath}"</span><b class="hl-tag" style="color: blue"> /></b>
<b class="hl-tag" style="color: blue"></bean></b>
</pre><p>In that case you will have to add the following lines to your properties file: </p><p>red5-web.properties -</p><div class="literallayout"><p><br>
recordPath=recordedStreams/ <br>
playbackPath=videoStreams/ <br>
absolutePath=false <br>
recordPath=/path/to/recordedStreams/ <br>
playbackPath=/path/to/videoStreams/ <br>
absolutePath=true <br>
</p></div></div></div><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navfooter"><hr></hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="tomcat-deployment.html">Prev</a> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right"> <a accesskey="n" href="security.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 11. Deploying Red5 To Tomcat </td><td width="20%" align="center"><span style="color:white;font-size:90%;"><a href="http://osflash.org/red5" title="Red5">Red5 Open Source Flash Server</a></span></td><td width="40%" align="right" valign="top"> Chapter 13. Security</td></tr></table></div></body></html>
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