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Current libsndfile source
author Chris Cannam <cannam@all-day-breakfast.com>
date Tue, 18 Oct 2016 13:22:47 +0100
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1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
2 <HTML>
3
4 <HEAD>
5 <TITLE>
6 libsndfile
7 </TITLE>
8 <META NAME="Author" CONTENT="Erik de Castro Lopo (erikd AT mega-nerd DOT com)">
9 <META NAME="Version" CONTENT="libsndfile-1.0.27">
10 <META NAME="Description" CONTENT="The libsndfile Home Page">
11 <META NAME="Keywords" CONTENT="WAV AIFF AU SVX PAF NIST W64 libsndfile sound audio dsp Linux">
12 <META NAME="ROBOTS" CONTENT="NOFOLLOW">
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15 </HEAD>
16
17 <BODY>
18 <!-- pepper -->
19 <CENTER>
20 <IMG SRC="libsndfile.jpg" HEIGHT=98 WIDTH=367 ALT="libsndfile.jpg">
21 </CENTER>
22 <!-- pepper -->
23 <CENTER>
24 <A HREF="#History">History</A> -+-
25 <A HREF="#Features">Features</A> -+-
26 <A HREF="#Similar">Similar or Related Projects</A> -+-
27 <A HREF="NEWS">News</A>
28 <br>
29 <A HREF="development.html">Development</A> -+-
30 <A HREF="api.html">Programming Interface</A> -+-
31 <A HREF="bugs.html">Bug Reporting</A> -+-
32 <A HREF="#Download">Download</A>
33 <br>
34 <A HREF="FAQ.html">FAQ</A> -+-
35 <A HREF="lists.html">Mailing Lists</A> -+-
36 <A HREF="ChangeLog">Change Log</A> -+-
37 <A HREF="#Licensing">Licensing Information</A> -+-
38 <A HREF="#SeeAlso">See Also</A>
39 </CENTER>
40
41 <br><br>
42 <P>
43 Libsndfile is a C library for reading and writing files containing sampled sound
44 (such as MS Windows WAV and the Apple/SGI AIFF format) through one standard
45 library interface. It is released in source code format under the
46 <A HREF="http://www.gnu.org/copyleft/lesser.html">Gnu Lesser General Public License</A>.
47 </P>
48 <!-- pepper -->
49 <P>
50 The library was written to compile and run on a Linux system but should compile
51 and run on just about any Unix (including MacOS X).
52 There are also pre-compiled binaries available for 32 and 64 bit windows.
53 </P>
54 <P>
55 It was designed to handle both little-endian (such as WAV) and big-endian
56 (such as AIFF) data, and to compile and run correctly on little-endian (such as Intel
57 and DEC/Compaq Alpha) processor systems as well as big-endian processor systems such
58 as Motorola 68k, Power PC, MIPS and Sparc.
59 Hopefully the design of the library will also make it easy to extend for reading and
60 writing new sound file formats.
61 </P>
62 <!-- pepper -->
63 <P>
64 It has been compiled and tested (at one time or another) on the following systems:
65 </P>
66 <!-- pepper -->
67 <UL>
68 <LI>Every platform supported by Debian GNU/Linux including x86_64-linux-gnu,
69 i486-linux-gnu, powerpc-linux-gnu, sparc-linux-gnu, alpha-linux-gnu,
70 mips-linux-gnu and armel-linux-gnu.</LI>
71 <LI>powerpc-apple-darwin7.0 (Mac OS X 10.3)</LI>
72 <LI>sparc-sun-solaris2.8 (using gcc)</LI>
73 <LI>mips-sgi-irix5.3 (using gcc)</LI>
74 <LI>QNX 6.0</LI>
75 <LI>i386-unknown-openbsd2.9</LI>
76 </UL>
77 <!-- pepper -->
78 <P>
79 At the moment, each new release is being tested on i386 Linux, x86_64 Linux,
80 PowerPC Linux, Win32 and Win64.
81 </P>
82 <!-- pepper -->
83
84 <A NAME="Capabilities"></A>
85 <A NAME="Features"></A>
86 <H1><B>Features</B></H1>
87 <P>
88 libsndfile has the following main features :
89 </P>
90 <UL>
91 <lI> Ability to read and write a large number of file formats.
92 <LI> A simple, elegant and easy to use Applications Programming Interface.
93 <LI> Usable on Unix, Win32, MacOS and others.
94 <LI> On the fly format conversion, including endian-ness swapping, type conversion
95 and bitwidth scaling.
96 <LI> Optional normalisation when reading floating point data from files containing
97 integer data.
98 <LI> Ability to open files in read/write mode.
99 <LI> The ability to write the file header without closing the file (only on files
100 open for write or read/write).
101 <LI> Ability to query the library about all supported formats and retrieve text
102 strings describing each format.
103 </UL>
104 <P>
105 libsndfile has a comprehensive test suite so that each release is as bug free
106 as possible.
107 When new bugs are found, new tests are added to the test suite to ensure that
108 these bugs don't creep back into the code.
109 When new features are added, tests are added to the test suite to make sure that
110 these features continue to work correctly even when they are old features.
111 </P>
112 <P>
113 The following table lists the file formats and encodings that libsndfile can read
114 and write.
115 The file formats are arranged across the top and encodings along the left
116 edge.
117 </P>
118 <br>
119
120 <TABLE BORDER="1" cellpadding="2">
121 <TR><TD>&nbsp;</TD>
122 <TD ALIGN="center">Micro- soft<br>WAV</TD>
123 <TD ALIGN="center">SGI / Apple<br>AIFF / AIFC</TD>
124 <TD ALIGN="center">Sun / DEC /<br>NeXT<br>AU / SND</TD>
125 <TD ALIGN="center">Header- less<br>RAW</TD>
126 <TD ALIGN="center">Paris Audio<br>File<br>PAF</TD>
127 <TD ALIGN="center">Commo- dore<br>Amiga<br>IFF / SVX</TD>
128 <TD ALIGN="center">Sphere<br>Nist<br>WAV</TD>
129 <TD ALIGN="center">IRCAM<br>SF</TD>
130 <TD ALIGN="center">Creative<br>VOC</TD>
131 <TD ALIGN="center">Sound forge<br>W64</TD>
132 <TD ALIGN="center"><A HREF="octave.html">GNU Octave 2.0</A><br>MAT4</TD>
133 <TD ALIGN="center"><A HREF="octave.html">GNU Octave 2.1</A><br>MAT5</TD>
134 <TD ALIGN="center">Portable Voice Format<br>PVF</TD>
135 <TD ALIGN="center">Fasttracker 2<br>XI</TD>
136 <TD ALIGN="center">HMM Tool Kit<br>HTK</TD>
137 <TD ALIGN="center">Apple<br>CAF</TD>
138 <TD ALIGN="center">Sound<br>Designer II<br>SD2</TD>
139 <TD ALIGN="center">Free Lossless Audio Codec<br>FLAC</TD>
140 </TR>
141 <TR><TD>Unsigned 8 bit PCM</TD>
142 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD>
143 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD>
144 <TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD>
145 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
146 </TR>
147
148 <TR><TD>Signed 8 bit PCM</TD>
149 <TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
150 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD>
151 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD>
152 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
153 </TR>
154
155 <TR><TD>Signed 16 bit PCM</TD>
156 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
157 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
158 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
159 <TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
160 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
161 </TR>
162
163 <TR><TD>Signed 24 bit PCM</TD>
164 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
165 <TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
166 <TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
167 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
168 </TR>
169
170 <TR><TD>Signed 32 bit PCM</TD>
171 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
172 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD>
173 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
174 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
175 </TR>
176
177 <TR><TD>32 bit float</TD>
178 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
179 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD>
180 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD>
181 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
182 </TR>
183
184 <TR><TD>64 bit double</TD>
185 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
186 <TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
187 <TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
188 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
189 </TR>
190
191 <TR><TD>u-law encoding</TD>
192 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
193 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
194 <TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
195 <TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
196 </TR>
197 <TR><TD>A-law encoding</TD>
198 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
199 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD>
200 <TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
201 <TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
202 </TR>
203
204 <TR><TD>IMA ADPCM</TD>
205 <TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
206 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD>
207 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
208 <TD>&nbsp;</TD><TD>&nbsp;</TD>
209 </TR>
210
211 <TR><TD>MS ADPCM</TD>
212 <TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
213 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
214 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
215 </TR>
216
217 <TR><TD>GSM 6.10</TD>
218 <TD ALIGN="center">R/W</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
219 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
220 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
221 </TR>
222
223 <TR><TD>G721 ADPCM 32kbps</TD>
224 <TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
225 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
226 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
227 </TR>
228
229 <TR><TD>G723 ADPCM 24kbps</TD>
230 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
231 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
232 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
233 </TR>
234
235 <TR><TD>G723 ADPCM 40kbps</TD>
236 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
237 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
238 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
239 </TR>
240
241 <TR><TD>12 bit DWVW</TD>
242 <TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
243 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
244 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
245 </TR>
246
247 <TR><TD>16 bit DWVW</TD>
248 <TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
249 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
250 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
251 </TR>
252
253 <TR><TD>24 bit DWVW</TD>
254 <TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
255 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
256 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
257 </TR>
258 <TR><TD>Ok Dialogic ADPCM</TD>
259 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
260 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
261 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
262 </TR>
263 <TR><TD>8 bit DPCM</TD>
264 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
265 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
266 <TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
267 </TR>
268 <TR><TD>16 bit DPCM</TD>
269 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
270 <TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
271 <TD>&nbsp;</TD><TD ALIGN="center">R/W</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD>
272 </TR>
273 </TABLE>
274
275 <p>
276 From version 1.0.18, libsndfile also reads and writes
277 <a href="http://flac.sourceforge.net/">FLAC</a>
278 and
279 <a href="http://www.vorbis.com/">Ogg/Vorbis</a>.
280 </p>
281
282 <!-- pepper -->
283
284 <P>
285 Some of the file formats I am also interested in adding are:
286 </P>
287 <UL>
288 <LI> Kurzweil K2000 sampler files.
289 <LI> Ogg Speex.
290 </UL>
291 <P>
292 I have decided that I will not be adding support for MPEG Layer 3 (commonly
293 known as MP3) due to the patent issues surrounding this file format.
294 See
295 <a href="FAQ.html#Q020">
296 the FAQ</a>
297 for more.
298 </P>
299 <P>
300 Other file formats may also be added on request.
301 </P>
302
303 <!-- pepper -->
304
305 <A NAME="History"></A>
306 <H1><B>History</B></H1>
307 <P>
308 My first attempt at reading and writing WAV files was in 1990 or so under Windows
309 3.1.
310 I started using Linux in early 1995 and contributed some code to the
311 <A HREF="http://www.vaxxine.com/ve3wwg/gnuwave.html">wavplay</A>
312 program.
313 That contributed code would eventually mutate into this library.
314 As one of my interests is Digital Signal Processing (DSP) I decided that as well as
315 reading data from an audio file in the native format (typically 16 bit short integers)
316 it would also be useful to be able to have the library do the conversion to floating
317 point numbers for DSP applications.
318 It then dawned on me that whatever file format (anything from 8 bit unsigned chars,
319 to 32 bit floating point numbers) the library should be able to convert the data to
320 whatever format the library user wishes to use it in.
321 For example, in a sound playback program, the library caller typically wants the sound
322 data in 16 bit short integers to dump into a sound card even though the data in the
323 file may be 32 bit floating point numbers (ie Microsoft's WAVE_FORMAT_IEEE_FLOAT
324 format).
325 Another example would be someone doing speech recognition research who has recorded
326 some speech as a 16 bit WAV file but wants to process it as double precision floating
327 point numbers.
328 </P>
329 <P>
330 Here is the release history for libsndfile :
331 </P>
332 <UL>
333 <LI>Version 0.0.8 (Feb 15 1999) First official release.
334 <LI>Version 0.0.28 (Apr 26 2002) Final release of version 0 of libsndfile.
335 <LI>Version 1.0.0rc1 (Jun 24 2002) Release candidate 1 of version 1 of libsndfile.
336 <LI>Version 1.0.0rc6 (Aug 14 2002) MacOS 9 fixes.
337 <LI>Version 1.0.0 (Aug 16 2002) First 1.0.X release.
338 <LI>Version 1.0.1 (Sep 14 2002) Added MAT4 and MAT5 file formats.
339 <LI>Version 1.0.2 (Nov 24 2002) Added VOX ADPCM format.
340 <LI>Version 1.0.3 (Dec 09 2002) Fixes for Linux on ia64 CPUs.
341 <LI>Version 1.0.4 (Feb 02 2003) New file formats and functionality.
342 <LI>Version 1.0.5 (May 03 2003) One new file format and new functionality.
343 <LI>Version 1.0.6 (Feb 08 2004) Large file fix for Linux/Solaris, new functionality
344 and Win32 improvements.
345 <LI>Version 1.0.7 (Feb 24 2004) Fix build problems on MacOS X and fix ia64/MIPS etc
346 clip mode detction.
347 <LI>Version 1.0.8 (Mar 14 2004) Minor bug fixes.
348 <LI>Version 1.0.9 (Mar 30 2004) Add AVR format. Improve handling of some WAV files.
349 <LI>Version 1.0.10 (Jun 15 2004) Minor bug fixes. Fix support for Win32 MinGW compiler.
350 <LI>Version 1.0.11 (Nov 15 2004) Add SD2 file support, reading of loop data in WAV and AIFF.
351 Minor bug fixes.
352 <LI>Version 1.0.12 (Sep 30 2005) Add FLAC and CAF file support, virtual I/O interface.
353 Minor bug fixes and cleanups.
354 <LI>Version 1.0.13 (Jan 21 2006) Add read/write of instrument chunks. Minor bug fixes.
355 <LI>Version 1.0.14 (Feb 19 2006) Minor bug fixes. Start shipping windows binary/source ZIP.
356 <LI>Version 1.0.15 (Mar 16 2006) Minor bug fixes.
357 <LI>Version 1.0.16 (Apr 30 2006) Add support for RIFX. Other minor feature enhancements and
358 bug fixes.
359 <LI>Version 1.0.17 (Aug 31 2006) Add C++ wrapper sndfile.hh. Minor bug fixes and cleanups.
360 <LI>Version 1.0.18 (Feb 07 2009) Add Ogg/Vorbis suppport, remove captive libraries, many
361 new features and bug fixes. Generate Win32 and Win64 pre-compiled binaries.
362 <LI>Version 1.0.19 (Mar 02 2009) Fix for CVE-2009-0186. Huge number of minor fixes as a
363 result of static analysis.
364 <LI>Version 1.0.20 (May 14 2009) Fix for potential heap overflow.
365 <LI>Version 1.0.21 (December 13 2009) Bunch of minor bug fixes.
366 <LI>Version 1.0.22 (October 04 2010) Bunch of minor bug fixes.
367 <LI>Version 1.0.23 (October 10 2010) Minor bug fixes.
368 <LI>Version 1.0.24 (March 23 2011) Minor bug fixes.
369 <LI>Version 1.0.25 (July 13 2011) Fix for Secunia Advisory SA45125. Minor bug fixes and
370 improvements.
371 <LI>Version 1.0.26 (November 22 2015) Fix for CVE-2014-9496, CVE-2014-9756 and CVE-2015-7805.
372 Add ALAC/CAF support. Minor bug fixes and improvements.
373 <LI>Version 1.0.27 (June 19 2016) Fix a seek regression in 1.0.26. Add metadata read/write
374 for CAF and RF64. FIx PAF endian-ness issue.
375 </UL>
376
377 <A NAME="Similar"></A>
378 <H1><B>Similar or Related Projects</B></H1>
379
380 <UL>
381 <LI><A HREF="http://sox.sourceforge.net/">SoX</A> is a program for
382 converting between sound file formats.
383 <LI><A HREF="http://www.hitsquad.com/smm/programs/WavPlay/">Wavplay</A> started out
384 as a minimal WAV file player under Linux and has mutated into Gnuwave, a client/server
385 application for more general multimedia and games sound playback.
386 <LI><A HREF="http://www.68k.org/~michael/audiofile/">Audiofile</A> (libaudiofile) is
387 a library similar to libsndfile but with a different programming interface. The
388 author Michael Pruett has set out to clone (and fix some bugs in) the libaudiofile
389 library which ships with SGI's IRIX OS.
390 <LI><A HREF="ftp://ccrma-ftp.stanford.edu/pub/Lisp/sndlib.tar.gz">sndlib.tar.gz</A> is
391 another library written by Bill Schottstaedt of CCRMA.
392 </UL>
393
394 <A NAME="Licensing"></A>
395 <H1><B>Licensing</B></H1>
396 <P>
397 libsndfile is released under the terms of the GNU Lesser General Public License,
398 of which there are two versions;
399 <a href="http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html">version 2.1</a>
400 and
401 <a href="http://www.gnu.org/copyleft/lesser.html">version 3</a>.
402 To maximise the compatibility of libsndfile, the user may choose to use libsndfile
403 under either of the above two licenses.
404 You can also read a simple explanation of the ideas behind the GPL and the LGPL
405 <A HREF="http://www.gnu.org/copyleft/copyleft.html">here</A>.
406 </P>
407 <P>
408 You can use libsndfile with
409 <A HREF="http://www.gnu.org/">Free Software</A>,
410 <A HREF="http://www.opensource.org/">Open Source</A>,
411 proprietary, shareware or other closed source applications as long as libsndfile
412 is used as a dynamically loaded library and you abide by a small number of other
413 conditions (read the LGPL for more info).
414 With applications released under the GNU GPL you can also use libsndfile statically
415 linked to your application.
416 </P>
417 <P>
418 I would like to see libsndfile used as widely as possible but I would prefer it
419 if you released software that uses libsndfile as
420 <A HREF="http://www.gnu.org/">Free Software</A>
421 or
422 <A HREF="http://www.opensource.org/">Open Source</A>.
423 However, if you put in a great deal of effort building a significant application
424 which simply uses libsndfile for file I/O, then I have no problem with you releasing
425 that as closed source and charging as much money as you want for it as long as you
426 abide by <A HREF="http://www.gnu.org/copyleft/lesser.html">the license</A>.
427 </P>
428
429 <A NAME="Download"></A>
430 <H1><B>Download</B></H1>
431 <P>
432 Here is the latest version. It is available in the following formats:
433 </P>
434 <UL>
435 <LI>Source code as a .tar.gz :
436 <A HREF="files/libsndfile-1.0.27.tar.gz">libsndfile-1.0.27.tar.gz</A>.
437 <LI>Win32 installer:
438 <A HREF="files/libsndfile-1.0.27-w32-setup.exe">
439 libsndfile-1.0.27-w32-setup.exe</A> (thoroughly tested under
440 <a href="http://www.winehq.com/">Wine</a> and Windows XP).
441 <LI>Win64 installer:
442 <A HREF="files/libsndfile-1.0.27-w64-setup.exe">
443 libsndfile-1.0.27-w64-setup.exe</A>
444 (thoroughly tested on 64 bit Windows 7).
445 </UL>
446
447 <P>
448 The Win32 installer should work on Windows Vista or later.
449 </p>
450
451 <P>
452 Pre-release versions of libsndfile are available
453 <A HREF="http://www.mega-nerd.com/tmp/">here</A>
454 and are announced on the
455 <A HREF="lists.html">libsndfile-devel</A>
456 mailing list.
457 </P>
458
459 <A NAME="SeeAlso"></A>
460 <H1><B>See Also</B></H1>
461 <UL>
462 <LI><a href="http://www.mega-nerd.com/libsndfile/tools/">
463 sndfile-tools</a>
464 : a small collection of programs which use libsndfile.
465 </UL>
466
467 <br><br>
468
469 <hr>
470
471 <P>
472 The latest version of this document can be found
473 <A HREF="http://www.mega-nerd.com/libsndfile/">here</A>.
474 </P>
475 <P>
476 Author :
477 <A HREF="m&#97;ilt&#111;:&#101;rikd&#64;&#109;eg&#97;-&#110;erd.&#99;om">
478 Erik de Castro Lopo</a>
479 </P>
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