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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
"http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
<TITLE>The sfront Reference Manual</TITLE>
<META name="keywords" content="John Lazzaro, John Lazaro, Jon Lazzaro,
Jon Lazaro, John Lazarro, Jon Lazarro, John Lazzarro, Jon Lazzarro,
John Lazzarow, John Wawrzynek, MPEG, MPEG 4, MPEG-4, MP4, MPEG-4
Structured Audio, MP4, SA, MP4-SA, MP4/SA, sfront, SAOL to C,
SAOL to C converter, MP4 to C, MP4-SA to C, MPEG 4 Structured Audio
to C, s2c">
<META name="description" content="The reference manual for sfront, a
program that translates SAOL programs and MP4-SA binary file encodings
to a program in the C language. When executed, this program creates
the audio.">
</HEAD>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="0000EE" ALINK="FF6666"
VLINK="551A8B">
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<FONT FACE="Verdana, Lucida Sans, Arial, Helvetica, Geneva,
sans-serif"><SMALL>
<A HREF="../index.html">mp4-sa</A>-><STRONG>sfront reference manual</STRONG>
</SMALL></FONT>
</TD></TR>
</TABLE>
<H1>The <TT>sfront</TT> Reference Manual</H1>
<H3>By <A HREF="http://www.cs.berkeley.edu/~lazzaro/index.html">
John Lazzaro</A> and <A HREF="http://www.cs.berkeley.edu/~johnw">
John Wawrzynek</A>, <A HREF="http://www.cs.berkeley.edu/">
CS Division</A>, <A HREF="http://www.berkeley.edu/">UC Berkeley.</A></H3>
<TABLE WIDTH="100%" CELLPADDING=12 CELLSPACING=0>
<TR>
<TD WIDTH="45%" VALIGN=top BGCOLOR="#CCFFCC">
<H2>Introduction</H2>
<P>
Welcome to the reference manual for sfront, a translator that converts
MP4-SA files into efficient C programs that generate audio.
<P>
Sfront supports sound generation for interactive applications.
<!--both locally and over the Internet.--> It can support on-line
streaming and off-line rendering applications. Sfront also works well
as a scripting tool for audio signal processing, in both batch and
interactive applications.
<P>
This reference manual explains how to install and use sfront, and how
to add drivers and make modifications to the programs. To learn about
how to write SAOL and SASL programs, see the <A
HREF="../book/index.html">MP4-SA book</A>.
<H2>Organization</H2>
<P>
The first part of the manual is a guide to using sfront
to compile MP4-SA.
<P>
Part I/1 describes how to install sfront, and includes instructions on
downloading, compiling, and testing the system.
<P>
Part I/2 describes how to use sfront for decoding and encoding MP4-SA
files. Part I/3 describes real-time sfront operation (including
plug-ins).<!--, and Part I/4 describes networking.-->
<P>
Parts I/4 and I/5 document reference materials.<!-- renumbered-->
<P>
The second part of the manual is a programmers guide to sfront.
<P>
Part II/1 shows how to use sfront as a sound engine in other
applications, and introduces the driver interface as the way to add
new code to sfront itself.
<P>
Part II/2 explains the <I>control</I> driver interface, used to to add
code to sfront to control the sound generation process.
<P>
Part II/3 explains the <I>audio</I> driver interface, used to add code
to sfront to send audio streams into and out of the sound engine.
<P>
<B>Next:</B><A HREF="user/install/index.html">Installing Sfront.</A>
</TD>
<TD WIDTH="55%" VALIGN=top BGCOLOR="#FFCCCC">
<H2>Table of Contents</H2>
<H4>Part I. Users Guide</H4>
<H4>1. <A HREF="user/install/index.html">Installing Sfront</A></H4>
<UL>
<LI>
<A HREF="user/install/index.html#platform">Supported platforms</A>. Where
sfront runs.
<LI>
<A HREF="user/install/index.html#download">Downloading sfront</A>. How
to pick up sfront.
<LI>
<A HREF="user/install/index.html#compile">Installation</A>. Compiling and
testing sfront.
<LI>
<A HREF="user/install/index.html#bugs">Bugs</A>. Let us know if things don't work.
</UL>
<H4>2. <A HREF="user/use/index.html">File Rendering</A></H4>
<UL>
<LI>
<A HREF="user/use/index.html#render">File decoding</A>. Rendering MP4-SA files.
<LI>
<A HREF="user/use/index.html#input">Audio input</A>. Connecting files
to <B>input_bus</B>.
<LI>
<A HREF="user/use/index.html#encode">MP4 file encoding</A>. Creating MP4-SA files.
<LI>
<A HREF="user/use/index.html#deviant">Incompatibilities</A>. Deviations
from the spec.
</UL>
<H4>3. <A HREF="user/rtime/index.html">Real-Time Operation</A></H4>
<UL>
<LI>
<A HREF="user/rtime/index.html#stream">Real-time playback</A>. Sending audio
to sound hardware.
<LI>
<A HREF="user/rtime/index.html#rt">Real-time interaction</A>.
Real time audio and control input.
<LI>
<A HREF="user/rtime/index.html#plug-in">Plug-in development</A>.
Writing AudioUnits in SAOL.
</UL>
<!--
<H4>4. <A HREF="user/network/index.html">Networking</A></H4>
<UL>
<LI>
<A HREF="user/network/index.html#intro">Introduction</A>. SIP and RTP.
<LI>
<A HREF="user/network/index.html#testing">Network Testing</A>. The mirror
session.
<LI>
<A HREF="user/network/index.html#performance">Network Musical Performance</A>.
Low-latency apps.
<LI>
<A HREF="user/network/index.html#streaming">Network Streaming</A>. MIDI filestreams.
</UL>
-->
<!-- 4. and 5. below were renumbered -->
<B>4. <A HREF="user/cmdline/index.html">Command-line Options</A></B>
<BR>
<B>5. <A HREF="user/ref/index.html">Change Log and License</A></B>
<H4>Part II. Programmer's Guide</H4>
<H4>1. <A HREF="devel/intro/index.html">Developing with Sfront</A></H4>
<UL>
<LI>
<A HREF="devel/intro/index.html#use">Using sfront in an application</A>.
<LI>
<A HREF="devel/intro/index.html#code">Adding features to sfront</A>.
<LI>
<A HREF="devel/intro/index.html#driver">The driver interface</A>.
</UL>
<H4>2. <A HREF="devel/cdriver/intro/index.html">Control Drivers</A></H4>
<UL>
<LI>
<A HREF="devel/cdriver/intro/index.html">Overview</A>.
<LI>
<A HREF="devel/cdriver/data/index.html">Data Structures</A>.
<LI>
<A HREF="devel/cdriver/code/index.html">Writing the Driver</A>.
</UL>
<H4>3. <A HREF="devel/adriver/index.html">Audio Drivers</A></H4>
</TD>
</TR>
</TABLE>
<BODY BGCOLOR="#FFFFFF">
<TABLE BGCOLOR="#CCCCFF" WIDTH="100%" CLASS=navbar>
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<TD>
<FONT FACE="Verdana, Lucida Sans, Arial, Helvetica, Geneva,
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<A HREF="../index.html">mp4-sa</A>-><STRONG>sfront reference manual</STRONG>
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<P>
<A HREF="../copyright/index.html">Copyright 1999 John Lazzaro and John
Wawrzynek.</A>
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