2006-12-20 14:08:07 -05:00
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libsndfile : Embedded Sound Files.
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</TITLE>
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<META NAME="Author" CONTENT="Erik de Castro Lopo (erikd AT mega-nerd DOT com)">
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<META NAME="Description" CONTENT="The libsndfile API.">
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<META NAME="Keywords" CONTENT="WAV AIFF AU libsndfile sound audio dsp Linux">
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<LINK REL=StyleSheet HREF="libsndfile.css" TYPE="text/css" MEDIA="all">
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<BODY>
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<H1><B>Embedded Sound Files.</B></H1>
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<P>
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By using the open SNDFILE with a file descriptor function:
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</P>
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<PRE>
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SNDFILE* sf_open_fd (int fd, int mode, SF_INFO *sfinfo, int close_desc) ;
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</PRE>
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<P>
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it is possible to open sound files embedded within larger files.
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There are however a couple of caveats:
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<P>
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<UL>
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<LI> Read/Write mode (SFM_RDWR) is not supported.
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<LI> Writing of embedded files is only supported at the end of the file.
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<LI> Reading of embedded files is only supported at file offsets greater
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than zero.
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<LI> Not all file formats are supported (currently only WAV, AIFF and AU).
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</UL>
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<P>
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2009-05-21 17:09:30 -04:00
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The test program <B>multi_file_test.c</B> in the <B>tests/</B> directory of the
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2006-12-20 14:08:07 -05:00
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source code tarball shows how this functionality is used to read and write
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embedded files.
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</P>
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