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-libresample
-
-Real-time library interface by Dominic Mazzoni
-
-Based on resample-1.7:
- http://www-ccrma.stanford.edu/~jos/resample/
-
-License: LGPL - see the file LICENSE.txt for more information
-
-History:
-
-This library is not the highest-quality resampling library
-available, nor is it the most flexible, nor is it the
-fastest. But it is pretty good in all of these regards, and
-it is quite portable. The best resampling library I am aware
-of is libsamplerate by Erik de Castro Lopo. It's small, fast,
-and very high quality. However, it uses the GPL for its
-license (with commercial options available) and I needed
-a more free library. So I wrote this library, using
-the LGPL resample-1.7 library by Julius Smith as a basis.
-
-Resample-1.7 is a fixed-point resampler, and as a result
-has only limited precision. I rewrote it to use single-precision
-floating-point arithmetic instead and increased the number
-of filter coefficients between time steps significantly.
-On modern processors it can resample in real time even
-with this extra overhead.
-
-Resample-1.7 was designed to read and write from files, so
-I removed all of that code and replaced it with an API that
-lets you pass samples in small chunks. It should be easy
-to link to resample-1.7 as a library.
-
-Changes in version 0.1.3:
-
-* Fixed two bugs that were causing subtle problems
- on Intel x86 processors due to differences in roundoff errors.
-
-* Prefixed most function names with lrs and changed header file
- from resample.h to libresample.h, to avoid namespace
- collisions with existing programs and libraries.
-
-* Added resample_dup (thanks to Glenn Maynard)
-
-* Argument to resample_get_filter_width takes a const void *
- (thanks to Glenn Maynard)
-
-* resample-sndfile clips output to -1...1 (thanks to Glenn Maynard)
-
-Usage notes:
-
-- If the output buffer you pass is too small, resample_process
- may not use any input samples because its internal output
- buffer is too full to process any more. So do not assume
- that it is an error just because no input samples were
- consumed. Just keep passing valid output buffers.
-
-- Given a resampling factor f > 1, and a number of input
- samples n, the number of output samples should be between
- floor(n - f) and ceil(n + f). In other words, if you
- resample 1000 samples at a factor of 8, the number of
- output samples might be between 7992 and 8008. Do not
- assume that it will be exactly 8000. If you need exactly
- 8000 outputs, pad the input with extra zeros as necessary.
-
-License and warranty:
-
-All of the files in this package are Copyright 2003 by Dominic
-Mazzoni <dominic@minorninth.com>. This library was based heavily
-on Resample-1.7, Copyright 1994-2002 by Julius O. Smith III
-<jos@ccrma.stanford.edu>, all rights reserved.
-
-Permission to use and copy is granted subject to the terms of the
-"GNU Lesser General Public License" (LGPL) as published by the
-Free Software Foundation; either version 2.1 of the License,
-or any later version. In addition, Julius O. Smith III requests
-that a copy of any modified files be sent by email to
-jos@ccrma.stanford.edu so that he may incorporate them into the
-CCRMA version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.