mirror of https://github.com/asterisk/asterisk
own repository, and must be installed like any other library for Asterisk to use. The two modules that require it are codec_resample and app_jack. To install libresample: $ svn co http://svn.digium.com/svn/libresample/trunk libresample $ cd libresample $ ./configure $ make $ sudo make install This code is currently in our own repository because the build system did not include the appropriate targets for building a dynamic library or for installing the library. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@132390 65c4cc65-6c06-0410-ace0-fbb531ad65f31.6.1
Russell Bryant
17 years ago
parent
5de127e103
commit
c87f901cfd
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b) Give prominent notice with the combined library of the fact
|
|
||||||
that part of it is a work based on the Library, and explaining
|
|
||||||
where to find the accompanying uncombined form of the same work.
|
|
||||||
|
|
||||||
8. You may not copy, modify, sublicense, link with, or distribute
|
|
||||||
the Library except as expressly provided under this License. Any
|
|
||||||
attempt otherwise to copy, modify, sublicense, link with, or
|
|
||||||
distribute the Library is void, and will automatically terminate your
|
|
||||||
rights under this License. However, parties who have received copies,
|
|
||||||
or rights, from you under this License will not have their licenses
|
|
||||||
terminated so long as such parties remain in full compliance.
|
|
||||||
|
|
||||||
9. You are not required to accept this License, since you have not
|
|
||||||
signed it. However, nothing else grants you permission to modify or
|
|
||||||
distribute the Library or its derivative works. These actions are
|
|
||||||
prohibited by law if you do not accept this License. Therefore, by
|
|
||||||
modifying or distributing the Library (or any work based on the
|
|
||||||
Library), you indicate your acceptance of this License to do so, and
|
|
||||||
all its terms and conditions for copying, distributing or modifying
|
|
||||||
the Library or works based on it.
|
|
||||||
|
|
||||||
10. Each time you redistribute the Library (or any work based on the
|
|
||||||
Library), the recipient automatically receives a license from the
|
|
||||||
original licensor to copy, distribute, link with or modify the Library
|
|
||||||
subject to these terms and conditions. You may not impose any further
|
|
||||||
restrictions on the recipients' exercise of the rights granted herein.
|
|
||||||
You are not responsible for enforcing compliance by third parties with
|
|
||||||
this License.
|
|
||||||
|
|
||||||
11. If, as a consequence of a court judgment or allegation of patent
|
|
||||||
infringement or for any other reason (not limited to patent issues),
|
|
||||||
conditions are imposed on you (whether by court order, agreement or
|
|
||||||
otherwise) that contradict the conditions of this License, they do not
|
|
||||||
excuse you from the conditions of this License. If you cannot
|
|
||||||
distribute so as to satisfy simultaneously your obligations under this
|
|
||||||
License and any other pertinent obligations, then as a consequence you
|
|
||||||
may not distribute the Library at all. For example, if a patent
|
|
||||||
license would not permit royalty-free redistribution of the Library by
|
|
||||||
all those who receive copies directly or indirectly through you, then
|
|
||||||
the only way you could satisfy both it and this License would be to
|
|
||||||
refrain entirely from distribution of the Library.
|
|
||||||
|
|
||||||
If any portion of this section is held invalid or unenforceable under
|
|
||||||
any particular circumstance, the balance of the section is intended to
|
|
||||||
apply, and the section as a whole is intended to apply in other
|
|
||||||
circumstances.
|
|
||||||
|
|
||||||
It is not the purpose of this section to induce you to infringe any
|
|
||||||
patents or other property right claims or to contest validity of any
|
|
||||||
such claims; this section has the sole purpose of protecting the
|
|
||||||
integrity of the free software distribution system which is
|
|
||||||
implemented by public license practices. Many people have made
|
|
||||||
generous contributions to the wide range of software distributed
|
|
||||||
through that system in reliance on consistent application of that
|
|
||||||
system; it is up to the author/donor to decide if he or she is willing
|
|
||||||
to distribute software through any other system and a licensee cannot
|
|
||||||
impose that choice.
|
|
||||||
|
|
||||||
This section is intended to make thoroughly clear what is believed to
|
|
||||||
be a consequence of the rest of this License.
|
|
||||||
|
|
||||||
12. If the distribution and/or use of the Library is restricted in
|
|
||||||
certain countries either by patents or by copyrighted interfaces, the
|
|
||||||
original copyright holder who places the Library under this License
|
|
||||||
may add an explicit geographical distribution limitation excluding those
|
|
||||||
countries, so that distribution is permitted only in or among
|
|
||||||
countries not thus excluded. In such case, this License incorporates
|
|
||||||
the limitation as if written in the body of this License.
|
|
||||||
|
|
||||||
13. The Free Software Foundation may publish revised and/or new
|
|
||||||
versions of the Lesser General Public License from time to time.
|
|
||||||
Such new versions will be similar in spirit to the present version,
|
|
||||||
but may differ in detail to address new problems or concerns.
|
|
||||||
|
|
||||||
Each version is given a distinguishing version number. If the Library
|
|
||||||
specifies a version number of this License which applies to it and
|
|
||||||
"any later version", you have the option of following the terms and
|
|
||||||
conditions either of that version or of any later version published by
|
|
||||||
the Free Software Foundation. If the Library does not specify a
|
|
||||||
license version number, you may choose any version ever published by
|
|
||||||
the Free Software Foundation.
|
|
||||||
|
|
||||||
14. If you wish to incorporate parts of the Library into other free
|
|
||||||
programs whose distribution conditions are incompatible with these,
|
|
||||||
write to the author to ask for permission. For software which is
|
|
||||||
copyrighted by the Free Software Foundation, write to the Free
|
|
||||||
Software Foundation; we sometimes make exceptions for this. Our
|
|
||||||
decision will be guided by the two goals of preserving the free status
|
|
||||||
of all derivatives of our free software and of promoting the sharing
|
|
||||||
and reuse of software generally.
|
|
||||||
|
|
||||||
NO WARRANTY
|
|
||||||
|
|
||||||
15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
|
|
||||||
WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
|
|
||||||
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
|
|
||||||
OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
|
|
||||||
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
|
|
||||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
||||||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
|
|
||||||
LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
|
|
||||||
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
|
||||||
|
|
||||||
16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
|
|
||||||
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
|
|
||||||
AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
|
|
||||||
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
|
|
||||||
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
|
|
||||||
LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
|
|
||||||
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
|
|
||||||
FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
|
|
||||||
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
|
||||||
DAMAGES.
|
|
||||||
|
|
||||||
END OF TERMS AND CONDITIONS
|
|
||||||
|
|
||||||
@ -1,11 +0,0 @@
|
|||||||
include $(ASTTOPDIR)/Makefile.moddir_rules
|
|
||||||
|
|
||||||
ASTCFLAGS+= -Isrc -Iinclude
|
|
||||||
|
|
||||||
libresample.a: src/resample.o src/resamplesubs.o src/filterkit.o
|
|
||||||
$(ECHO_PREFIX) echo " [AR] $^ -> $@"
|
|
||||||
$(CMD_PREFIX) $(AR) cr $@ $^
|
|
||||||
$(CMD_PREFIX) $(RANLIB) $@
|
|
||||||
|
|
||||||
clean::
|
|
||||||
rm -f src/*.o libresample.a
|
|
||||||
@ -1,52 +0,0 @@
|
|||||||
# Run configure to generate Makefile from Makefile.in on
|
|
||||||
# any system supported by GNU autoconf. For all other
|
|
||||||
# systems, use this file as a template to create a
|
|
||||||
# working Makefile.
|
|
||||||
|
|
||||||
CC = @CC@
|
|
||||||
CFLAGS = @CFLAGS@ -Wall
|
|
||||||
|
|
||||||
LIBS = @LIBS@ -lm
|
|
||||||
|
|
||||||
AR = @AR@
|
|
||||||
RANLIB = @RANLIB@
|
|
||||||
|
|
||||||
OBJS = \
|
|
||||||
src/resample.c.o \
|
|
||||||
src/resamplesubs.c.o \
|
|
||||||
src/filterkit.c.o
|
|
||||||
|
|
||||||
TARGETS = @TARGETS@
|
|
||||||
|
|
||||||
all: $(TARGETS)
|
|
||||||
|
|
||||||
libresample.a: $(OBJS) Makefile
|
|
||||||
$(AR) ruv libresample.a $(OBJS)
|
|
||||||
ranlib libresample.a
|
|
||||||
|
|
||||||
tests/testresample: libresample.a tests/testresample.c
|
|
||||||
$(CC) -o tests/testresample \
|
|
||||||
$(CFLAGS) tests/testresample.c \
|
|
||||||
libresample.a $(LIBS)
|
|
||||||
|
|
||||||
tests/compareresample: libresample.a tests/compareresample.c
|
|
||||||
$(CC) -o tests/compareresample \
|
|
||||||
$(CFLAGS) tests/compareresample.c \
|
|
||||||
libresample.a -lsamplerate $(LIBS)
|
|
||||||
|
|
||||||
tests/resample-sndfile: libresample.a tests/resample-sndfile.c
|
|
||||||
$(CC) -o tests/resample-sndfile \
|
|
||||||
$(CFLAGS) tests/resample-sndfile.c \
|
|
||||||
libresample.a -lsndfile $(LIBS)
|
|
||||||
|
|
||||||
clean:
|
|
||||||
rm -f $(TARGETS) $(OBJS)
|
|
||||||
|
|
||||||
distclean: clean
|
|
||||||
rm -f Makefile
|
|
||||||
rm -f config.status config.cache config.log src/config.h
|
|
||||||
rm -f *~ src/*~ tests/*~ include/*~
|
|
||||||
|
|
||||||
%.c.o: %.c Makefile include/libresample.h \
|
|
||||||
src/resample_defs.h src/filterkit.h src/config.h
|
|
||||||
$(CC) -c $(CFLAGS) $< -o $@
|
|
||||||
@ -1,84 +0,0 @@
|
|||||||
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.
|
|
||||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@ -1,68 +0,0 @@
|
|||||||
dnl
|
|
||||||
dnl libresample configure.in script
|
|
||||||
dnl
|
|
||||||
dnl Dominic Mazzoni
|
|
||||||
dnl
|
|
||||||
|
|
||||||
dnl Require autoconf >= 2.13
|
|
||||||
AC_PREREQ(2.13)
|
|
||||||
|
|
||||||
dnl Init autoconf and make sure configure is being called
|
|
||||||
dnl from the right directory
|
|
||||||
AC_INIT([src/resample.c])
|
|
||||||
|
|
||||||
dnl Checks for programs.
|
|
||||||
AC_PROG_CC
|
|
||||||
AC_PROG_RANLIB
|
|
||||||
|
|
||||||
AC_PATH_PROG(AR, ar, no)
|
|
||||||
if [[ $AR = "no" ]] ; then
|
|
||||||
AC_MSG_ERROR("Could not find ar - needed to create a library");
|
|
||||||
fi
|
|
||||||
|
|
||||||
AC_SUBST(TARGETS)
|
|
||||||
TARGETS="libresample.a tests/testresample"
|
|
||||||
|
|
||||||
AC_CHECK_LIB(sndfile, sf_open, have_libsndfile=yes, have_libsndfile=no)
|
|
||||||
AC_CHECK_HEADER(sndfile.h, , have_libsndfile=no)
|
|
||||||
|
|
||||||
if [[ $have_libsndfile = "yes" ]] ; then
|
|
||||||
TARGETS="$TARGETS tests/resample-sndfile"
|
|
||||||
fi
|
|
||||||
|
|
||||||
AC_CHECK_LIB(samplerate, src_simple, have_libsamplerate=yes, have_libsamplerate=no)
|
|
||||||
AC_CHECK_HEADER(samplerate.h, , have_libsamplerate=no)
|
|
||||||
|
|
||||||
if [[ $have_libsamplerate = "yes" ]] ; then
|
|
||||||
TARGETS="$TARGETS tests/compareresample"
|
|
||||||
fi
|
|
||||||
|
|
||||||
AC_CHECK_HEADERS(inttypes.h)
|
|
||||||
|
|
||||||
AC_CONFIG_HEADER(src/config.h:src/configtemplate.h)
|
|
||||||
AC_OUTPUT([Makefile])
|
|
||||||
|
|
||||||
echo ""
|
|
||||||
|
|
||||||
if [[ $have_libsamplerate = "yes" ]] ; then
|
|
||||||
echo "Configured to build tests/resample-sndfile using libsndfile"
|
|
||||||
echo ""
|
|
||||||
else
|
|
||||||
echo "Could not find libsndfile - needed if you want to"
|
|
||||||
echo "compile tests/resample-sndfile"
|
|
||||||
echo ""
|
|
||||||
fi
|
|
||||||
|
|
||||||
if [[ $have_libsamplerate = "yes" ]] ; then
|
|
||||||
echo "Configured to build tests/compareresample to compare against"
|
|
||||||
echo "Erik de Castro Lopo's libsamplerate library."
|
|
||||||
echo ""
|
|
||||||
else
|
|
||||||
echo "Could not find libsamplerate - only needed if you want to"
|
|
||||||
echo "compile tests/compareresample to compare their performance."
|
|
||||||
echo ""
|
|
||||||
fi
|
|
||||||
|
|
||||||
echo "Type 'configure --help' to see options."
|
|
||||||
echo ""
|
|
||||||
echo "Type 'make' to build libresample and tests."
|
|
||||||
@ -1,120 +0,0 @@
|
|||||||
/**********************************************************************
|
|
||||||
|
|
||||||
resample.h
|
|
||||||
|
|
||||||
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
|
|
||||||
|
|
||||||
**********************************************************************/
|
|
||||||
|
|
||||||
/*!
|
|
||||||
* \file
|
|
||||||
* \brief libresample API
|
|
||||||
* \author Dominic Mazzoni
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifndef LIBRESAMPLE_INCLUDED
|
|
||||||
#define LIBRESAMPLE_INCLUDED
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
extern "C" {
|
|
||||||
#endif /* __cplusplus */
|
|
||||||
|
|
||||||
/*!
|
|
||||||
* \brief Create a resampler
|
|
||||||
*
|
|
||||||
* \param highQuality Set this argument to non-zero to enable higher quality
|
|
||||||
* resampling.
|
|
||||||
* \param minFactor This is the minimum resampling factor that will be used for
|
|
||||||
* this resampler. The resampling factor is calculated in the following
|
|
||||||
* way: ( from sample rate / to sample rate ).
|
|
||||||
* \param maxFactor This is the maximum resampling factor that will be used for
|
|
||||||
* this resampler.
|
|
||||||
*
|
|
||||||
* Use this function to create a new resampler that will maintain state
|
|
||||||
* information about the stream of audio being resampled.
|
|
||||||
*
|
|
||||||
* \return A handle to a new resampler
|
|
||||||
*/
|
|
||||||
void *resample_open(int highQuality,
|
|
||||||
double minFactor,
|
|
||||||
double maxFactor);
|
|
||||||
|
|
||||||
/*!
|
|
||||||
* \brief Duplicate a resampler
|
|
||||||
*
|
|
||||||
* \param handle the resampler to duplicate
|
|
||||||
*
|
|
||||||
* \return A new handle to a resampler, initialized with the same parameters
|
|
||||||
* used to create the original resampler.
|
|
||||||
*/
|
|
||||||
void *resample_dup(const void *handle);
|
|
||||||
|
|
||||||
/*!
|
|
||||||
* \brief Get filter width for resampler
|
|
||||||
*
|
|
||||||
* \param handle the resampler
|
|
||||||
*
|
|
||||||
* \return the filter width.
|
|
||||||
*/
|
|
||||||
int resample_get_filter_width(const void *handle);
|
|
||||||
|
|
||||||
/*!
|
|
||||||
* \brief Resample a chunk of audio
|
|
||||||
*
|
|
||||||
* \param handle the resampler
|
|
||||||
* \param factor the resampling factor. This factor should be calculated as
|
|
||||||
* ( from sample rate / to sample rate ). So, for converting from 8 kHz
|
|
||||||
* to 16 kHz, this value would be 2.0.
|
|
||||||
* \param inBuffer the input buffer for audio to resample.
|
|
||||||
* \param inBufferLen the number of samples in the input buffer
|
|
||||||
* \param lastFlag Set this argument to non-zero if the data in the input buffer
|
|
||||||
* is known to be the end of a stream. This would be used if you're
|
|
||||||
* resampling a file, for example.
|
|
||||||
* \param inBufferUsed This is an output parameter that indicates how many
|
|
||||||
* samples were consumed from the input buffer. Generally, this function
|
|
||||||
* is called in a loop until you know that the entire input buffer has
|
|
||||||
* been consumed, as it may take multiple calls to complete.
|
|
||||||
* \param outBuffer This is the output buffer. This function will write the
|
|
||||||
* resampled audio into this buffer.
|
|
||||||
* \param outBufferLen This parameter specifies how many samples there is room
|
|
||||||
* for in the output buffer.
|
|
||||||
*
|
|
||||||
* This is the main function used for resampling audio. It should be called
|
|
||||||
* in a loop until all of the data from the input buffer is consumed, or the
|
|
||||||
* output buffer has been filled.
|
|
||||||
*
|
|
||||||
* \return the number of samples written to the output buffer. If the return
|
|
||||||
* value is equal to the value provided in the outBufferLen parameter,
|
|
||||||
* then the output buffer has been filled.
|
|
||||||
*/
|
|
||||||
int resample_process(void *handle,
|
|
||||||
double factor,
|
|
||||||
float *inBuffer,
|
|
||||||
int inBufferLen,
|
|
||||||
int lastFlag,
|
|
||||||
int *inBufferUsed,
|
|
||||||
float *outBuffer,
|
|
||||||
int outBufferLen);
|
|
||||||
|
|
||||||
/*!
|
|
||||||
* \brief Close a resampler
|
|
||||||
*
|
|
||||||
* \param handle the resampler to close
|
|
||||||
*
|
|
||||||
* Use this function to release a handle to a resampler that was created using
|
|
||||||
* either resample_open() or resample_dup().
|
|
||||||
*
|
|
||||||
* \return nothing.
|
|
||||||
*/
|
|
||||||
void resample_close(void *handle);
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
} /* extern "C" */
|
|
||||||
#endif /* __cplusplus */
|
|
||||||
|
|
||||||
#endif /* LIBRESAMPLE_INCLUDED */
|
|
||||||
@ -1,251 +0,0 @@
|
|||||||
#!/bin/sh
|
|
||||||
#
|
|
||||||
# install - install a program, script, or datafile
|
|
||||||
# This comes from X11R5 (mit/util/scripts/install.sh).
|
|
||||||
#
|
|
||||||
# Copyright 1991 by the Massachusetts Institute of Technology
|
|
||||||
#
|
|
||||||
# Permission to use, copy, modify, distribute, and sell this software and its
|
|
||||||
# documentation for any purpose is hereby granted without fee, provided that
|
|
||||||
# the above copyright notice appear in all copies and that both that
|
|
||||||
# copyright notice and this permission notice appear in supporting
|
|
||||||
# documentation, and that the name of M.I.T. not be used in advertising or
|
|
||||||
# publicity pertaining to distribution of the software without specific,
|
|
||||||
# written prior permission. M.I.T. makes no representations about the
|
|
||||||
# suitability of this software for any purpose. It is provided "as is"
|
|
||||||
# without express or implied warranty.
|
|
||||||
#
|
|
||||||
# Calling this script install-sh is preferred over install.sh, to prevent
|
|
||||||
# `make' implicit rules from creating a file called install from it
|
|
||||||
# when there is no Makefile.
|
|
||||||
#
|
|
||||||
# This script is compatible with the BSD install script, but was written
|
|
||||||
# from scratch. It can only install one file at a time, a restriction
|
|
||||||
# shared with many OS's install programs.
|
|
||||||
|
|
||||||
|
|
||||||
# set DOITPROG to echo to test this script
|
|
||||||
|
|
||||||
# Don't use :- since 4.3BSD and earlier shells don't like it.
|
|
||||||
doit="${DOITPROG-}"
|
|
||||||
|
|
||||||
|
|
||||||
# put in absolute paths if you don't have them in your path; or use env. vars.
|
|
||||||
|
|
||||||
mvprog="${MVPROG-mv}"
|
|
||||||
cpprog="${CPPROG-cp}"
|
|
||||||
chmodprog="${CHMODPROG-chmod}"
|
|
||||||
chownprog="${CHOWNPROG-chown}"
|
|
||||||
chgrpprog="${CHGRPPROG-chgrp}"
|
|
||||||
stripprog="${STRIPPROG-strip}"
|
|
||||||
rmprog="${RMPROG-rm}"
|
|
||||||
mkdirprog="${MKDIRPROG-mkdir}"
|
|
||||||
|
|
||||||
transformbasename=""
|
|
||||||
transform_arg=""
|
|
||||||
instcmd="$mvprog"
|
|
||||||
chmodcmd="$chmodprog 0755"
|
|
||||||
chowncmd=""
|
|
||||||
chgrpcmd=""
|
|
||||||
stripcmd=""
|
|
||||||
rmcmd="$rmprog -f"
|
|
||||||
mvcmd="$mvprog"
|
|
||||||
src=""
|
|
||||||
dst=""
|
|
||||||
dir_arg=""
|
|
||||||
|
|
||||||
while [ x"$1" != x ]; do
|
|
||||||
case $1 in
|
|
||||||
-c) instcmd="$cpprog"
|
|
||||||
shift
|
|
||||||
continue;;
|
|
||||||
|
|
||||||
-d) dir_arg=true
|
|
||||||
shift
|
|
||||||
continue;;
|
|
||||||
|
|
||||||
-m) chmodcmd="$chmodprog $2"
|
|
||||||
shift
|
|
||||||
shift
|
|
||||||
continue;;
|
|
||||||
|
|
||||||
-o) chowncmd="$chownprog $2"
|
|
||||||
shift
|
|
||||||
shift
|
|
||||||
continue;;
|
|
||||||
|
|
||||||
-g) chgrpcmd="$chgrpprog $2"
|
|
||||||
shift
|
|
||||||
shift
|
|
||||||
continue;;
|
|
||||||
|
|
||||||
-s) stripcmd="$stripprog"
|
|
||||||
shift
|
|
||||||
continue;;
|
|
||||||
|
|
||||||
-t=*) transformarg=`echo $1 | sed 's/-t=//'`
|
|
||||||
shift
|
|
||||||
continue;;
|
|
||||||
|
|
||||||
-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
|
|
||||||
shift
|
|
||||||
continue;;
|
|
||||||
|
|
||||||
*) if [ x"$src" = x ]
|
|
||||||
then
|
|
||||||
src=$1
|
|
||||||
else
|
|
||||||
# this colon is to work around a 386BSD /bin/sh bug
|
|
||||||
:
|
|
||||||
dst=$1
|
|
||||||
fi
|
|
||||||
shift
|
|
||||||
continue;;
|
|
||||||
esac
|
|
||||||
done
|
|
||||||
|
|
||||||
if [ x"$src" = x ]
|
|
||||||
then
|
|
||||||
echo "install: no input file specified"
|
|
||||||
exit 1
|
|
||||||
else
|
|
||||||
true
|
|
||||||
fi
|
|
||||||
|
|
||||||
if [ x"$dir_arg" != x ]; then
|
|
||||||
dst=$src
|
|
||||||
src=""
|
|
||||||
|
|
||||||
if [ -d $dst ]; then
|
|
||||||
instcmd=:
|
|
||||||
chmodcmd=""
|
|
||||||
else
|
|
||||||
instcmd=mkdir
|
|
||||||
fi
|
|
||||||
else
|
|
||||||
|
|
||||||
# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
|
|
||||||
# might cause directories to be created, which would be especially bad
|
|
||||||
# if $src (and thus $dsttmp) contains '*'.
|
|
||||||
|
|
||||||
if [ -f $src -o -d $src ]
|
|
||||||
then
|
|
||||||
true
|
|
||||||
else
|
|
||||||
echo "install: $src does not exist"
|
|
||||||
exit 1
|
|
||||||
fi
|
|
||||||
|
|
||||||
if [ x"$dst" = x ]
|
|
||||||
then
|
|
||||||
echo "install: no destination specified"
|
|
||||||
exit 1
|
|
||||||
else
|
|
||||||
true
|
|
||||||
fi
|
|
||||||
|
|
||||||
# If destination is a directory, append the input filename; if your system
|
|
||||||
# does not like double slashes in filenames, you may need to add some logic
|
|
||||||
|
|
||||||
if [ -d $dst ]
|
|
||||||
then
|
|
||||||
dst="$dst"/`basename $src`
|
|
||||||
else
|
|
||||||
true
|
|
||||||
fi
|
|
||||||
fi
|
|
||||||
|
|
||||||
## this sed command emulates the dirname command
|
|
||||||
dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
|
|
||||||
|
|
||||||
# Make sure that the destination directory exists.
|
|
||||||
# this part is taken from Noah Friedman's mkinstalldirs script
|
|
||||||
|
|
||||||
# Skip lots of stat calls in the usual case.
|
|
||||||
if [ ! -d "$dstdir" ]; then
|
|
||||||
defaultIFS='
|
|
||||||
'
|
|
||||||
IFS="${IFS-${defaultIFS}}"
|
|
||||||
|
|
||||||
oIFS="${IFS}"
|
|
||||||
# Some sh's can't handle IFS=/ for some reason.
|
|
||||||
IFS='%'
|
|
||||||
set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
|
|
||||||
IFS="${oIFS}"
|
|
||||||
|
|
||||||
pathcomp=''
|
|
||||||
|
|
||||||
while [ $# -ne 0 ] ; do
|
|
||||||
pathcomp="${pathcomp}${1}"
|
|
||||||
shift
|
|
||||||
|
|
||||||
if [ ! -d "${pathcomp}" ] ;
|
|
||||||
then
|
|
||||||
$mkdirprog "${pathcomp}"
|
|
||||||
else
|
|
||||||
true
|
|
||||||
fi
|
|
||||||
|
|
||||||
pathcomp="${pathcomp}/"
|
|
||||||
done
|
|
||||||
fi
|
|
||||||
|
|
||||||
if [ x"$dir_arg" != x ]
|
|
||||||
then
|
|
||||||
$doit $instcmd $dst &&
|
|
||||||
|
|
||||||
if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
|
|
||||||
if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
|
|
||||||
if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
|
|
||||||
if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
|
|
||||||
else
|
|
||||||
|
|
||||||
# If we're going to rename the final executable, determine the name now.
|
|
||||||
|
|
||||||
if [ x"$transformarg" = x ]
|
|
||||||
then
|
|
||||||
dstfile=`basename $dst`
|
|
||||||
else
|
|
||||||
dstfile=`basename $dst $transformbasename |
|
|
||||||
sed $transformarg`$transformbasename
|
|
||||||
fi
|
|
||||||
|
|
||||||
# don't allow the sed command to completely eliminate the filename
|
|
||||||
|
|
||||||
if [ x"$dstfile" = x ]
|
|
||||||
then
|
|
||||||
dstfile=`basename $dst`
|
|
||||||
else
|
|
||||||
true
|
|
||||||
fi
|
|
||||||
|
|
||||||
# Make a temp file name in the proper directory.
|
|
||||||
|
|
||||||
dsttmp=$dstdir/#inst.$$#
|
|
||||||
|
|
||||||
# Move or copy the file name to the temp name
|
|
||||||
|
|
||||||
$doit $instcmd $src $dsttmp &&
|
|
||||||
|
|
||||||
trap "rm -f ${dsttmp}" 0 &&
|
|
||||||
|
|
||||||
# and set any options; do chmod last to preserve setuid bits
|
|
||||||
|
|
||||||
# If any of these fail, we abort the whole thing. If we want to
|
|
||||||
# ignore errors from any of these, just make sure not to ignore
|
|
||||||
# errors from the above "$doit $instcmd $src $dsttmp" command.
|
|
||||||
|
|
||||||
if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
|
|
||||||
if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
|
|
||||||
if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
|
|
||||||
if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
|
|
||||||
|
|
||||||
# Now rename the file to the real destination.
|
|
||||||
|
|
||||||
$doit $rmcmd -f $dstdir/$dstfile &&
|
|
||||||
$doit $mvcmd $dsttmp $dstdir/$dstfile
|
|
||||||
|
|
||||||
fi &&
|
|
||||||
|
|
||||||
|
|
||||||
exit 0
|
|
||||||
@ -1,7 +0,0 @@
|
|||||||
/* Run configure to generate config.h automatically on any
|
|
||||||
system supported by GNU autoconf. For all other systems,
|
|
||||||
use this file as a template to create config.h
|
|
||||||
*/
|
|
||||||
|
|
||||||
#undef HAVE_INTTYPES_H
|
|
||||||
|
|
||||||
@ -1,215 +0,0 @@
|
|||||||
/**********************************************************************
|
|
||||||
|
|
||||||
resamplesubs.c
|
|
||||||
|
|
||||||
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
|
|
||||||
|
|
||||||
This file provides Kaiser-windowed low-pass filter support,
|
|
||||||
including a function to create the filter coefficients, and
|
|
||||||
two functions to apply the filter at a particular point.
|
|
||||||
|
|
||||||
**********************************************************************/
|
|
||||||
|
|
||||||
/* Definitions */
|
|
||||||
#include "resample_defs.h"
|
|
||||||
|
|
||||||
#include "filterkit.h"
|
|
||||||
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <string.h>
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <math.h>
|
|
||||||
|
|
||||||
/* LpFilter()
|
|
||||||
*
|
|
||||||
* reference: "Digital Filters, 2nd edition"
|
|
||||||
* R.W. Hamming, pp. 178-179
|
|
||||||
*
|
|
||||||
* Izero() computes the 0th order modified bessel function of the first kind.
|
|
||||||
* (Needed to compute Kaiser window).
|
|
||||||
*
|
|
||||||
* LpFilter() computes the coeffs of a Kaiser-windowed low pass filter with
|
|
||||||
* the following characteristics:
|
|
||||||
*
|
|
||||||
* c[] = array in which to store computed coeffs
|
|
||||||
* frq = roll-off frequency of filter
|
|
||||||
* N = Half the window length in number of coeffs
|
|
||||||
* Beta = parameter of Kaiser window
|
|
||||||
* Num = number of coeffs before 1/frq
|
|
||||||
*
|
|
||||||
* Beta trades the rejection of the lowpass filter against the transition
|
|
||||||
* width from passband to stopband. Larger Beta means a slower
|
|
||||||
* transition and greater stopband rejection. See Rabiner and Gold
|
|
||||||
* (Theory and Application of DSP) under Kaiser windows for more about
|
|
||||||
* Beta. The following table from Rabiner and Gold gives some feel
|
|
||||||
* for the effect of Beta:
|
|
||||||
*
|
|
||||||
* All ripples in dB, width of transition band = D*N where N = window length
|
|
||||||
*
|
|
||||||
* BETA D PB RIP SB RIP
|
|
||||||
* 2.120 1.50 +-0.27 -30
|
|
||||||
* 3.384 2.23 0.0864 -40
|
|
||||||
* 4.538 2.93 0.0274 -50
|
|
||||||
* 5.658 3.62 0.00868 -60
|
|
||||||
* 6.764 4.32 0.00275 -70
|
|
||||||
* 7.865 5.0 0.000868 -80
|
|
||||||
* 8.960 5.7 0.000275 -90
|
|
||||||
* 10.056 6.4 0.000087 -100
|
|
||||||
*/
|
|
||||||
|
|
||||||
#define IzeroEPSILON 1E-21 /* Max error acceptable in Izero */
|
|
||||||
|
|
||||||
static double Izero(double x)
|
|
||||||
{
|
|
||||||
double sum, u, halfx, temp;
|
|
||||||
int n;
|
|
||||||
|
|
||||||
sum = u = n = 1;
|
|
||||||
halfx = x/2.0;
|
|
||||||
do {
|
|
||||||
temp = halfx/(double)n;
|
|
||||||
n += 1;
|
|
||||||
temp *= temp;
|
|
||||||
u *= temp;
|
|
||||||
sum += u;
|
|
||||||
} while (u >= IzeroEPSILON*sum);
|
|
||||||
return(sum);
|
|
||||||
}
|
|
||||||
|
|
||||||
void lrsLpFilter(double c[], int N, double frq, double Beta, int Num)
|
|
||||||
{
|
|
||||||
double IBeta, temp, temp1, inm1;
|
|
||||||
int i;
|
|
||||||
|
|
||||||
/* Calculate ideal lowpass filter impulse response coefficients: */
|
|
||||||
c[0] = 2.0*frq;
|
|
||||||
for (i=1; i<N; i++) {
|
|
||||||
temp = PI*(double)i/(double)Num;
|
|
||||||
c[i] = sin(2.0*temp*frq)/temp; /* Analog sinc function, cutoff = frq */
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Calculate and Apply Kaiser window to ideal lowpass filter.
|
|
||||||
* Note: last window value is IBeta which is NOT zero.
|
|
||||||
* You're supposed to really truncate the window here, not ramp
|
|
||||||
* it to zero. This helps reduce the first sidelobe.
|
|
||||||
*/
|
|
||||||
IBeta = 1.0/Izero(Beta);
|
|
||||||
inm1 = 1.0/((double)(N-1));
|
|
||||||
for (i=1; i<N; i++) {
|
|
||||||
temp = (double)i * inm1;
|
|
||||||
temp1 = 1.0 - temp*temp;
|
|
||||||
temp1 = (temp1<0? 0: temp1); /* make sure it's not negative since
|
|
||||||
we're taking the square root - this
|
|
||||||
happens on Pentium 4's due to tiny
|
|
||||||
roundoff errors */
|
|
||||||
c[i] *= Izero(Beta*sqrt(temp1)) * IBeta;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
float lrsFilterUp(float Imp[], /* impulse response */
|
|
||||||
float ImpD[], /* impulse response deltas */
|
|
||||||
UWORD Nwing, /* len of one wing of filter */
|
|
||||||
BOOL Interp, /* Interpolate coefs using deltas? */
|
|
||||||
float *Xp, /* Current sample */
|
|
||||||
double Ph, /* Phase */
|
|
||||||
int Inc) /* increment (1 for right wing or -1 for left) */
|
|
||||||
{
|
|
||||||
float *Hp, *Hdp = NULL, *End;
|
|
||||||
double a = 0;
|
|
||||||
float v, t;
|
|
||||||
|
|
||||||
Ph *= Npc; /* Npc is number of values per 1/delta in impulse response */
|
|
||||||
|
|
||||||
v = 0.0; /* The output value */
|
|
||||||
Hp = &Imp[(int)Ph];
|
|
||||||
End = &Imp[Nwing];
|
|
||||||
if (Interp) {
|
|
||||||
Hdp = &ImpD[(int)Ph];
|
|
||||||
a = Ph - floor(Ph); /* fractional part of Phase */
|
|
||||||
}
|
|
||||||
|
|
||||||
if (Inc == 1) /* If doing right wing... */
|
|
||||||
{ /* ...drop extra coeff, so when Ph is */
|
|
||||||
End--; /* 0.5, we don't do too many mult's */
|
|
||||||
if (Ph == 0) /* If the phase is zero... */
|
|
||||||
{ /* ...then we've already skipped the */
|
|
||||||
Hp += Npc; /* first sample, so we must also */
|
|
||||||
Hdp += Npc; /* skip ahead in Imp[] and ImpD[] */
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (Interp)
|
|
||||||
while (Hp < End) {
|
|
||||||
t = *Hp; /* Get filter coeff */
|
|
||||||
t += (*Hdp)*a; /* t is now interp'd filter coeff */
|
|
||||||
Hdp += Npc; /* Filter coeff differences step */
|
|
||||||
t *= *Xp; /* Mult coeff by input sample */
|
|
||||||
v += t; /* The filter output */
|
|
||||||
Hp += Npc; /* Filter coeff step */
|
|
||||||
Xp += Inc; /* Input signal step. NO CHECK ON BOUNDS */
|
|
||||||
}
|
|
||||||
else
|
|
||||||
while (Hp < End) {
|
|
||||||
t = *Hp; /* Get filter coeff */
|
|
||||||
t *= *Xp; /* Mult coeff by input sample */
|
|
||||||
v += t; /* The filter output */
|
|
||||||
Hp += Npc; /* Filter coeff step */
|
|
||||||
Xp += Inc; /* Input signal step. NO CHECK ON BOUNDS */
|
|
||||||
}
|
|
||||||
|
|
||||||
return v;
|
|
||||||
}
|
|
||||||
|
|
||||||
float lrsFilterUD(float Imp[], /* impulse response */
|
|
||||||
float ImpD[], /* impulse response deltas */
|
|
||||||
UWORD Nwing, /* len of one wing of filter */
|
|
||||||
BOOL Interp, /* Interpolate coefs using deltas? */
|
|
||||||
float *Xp, /* Current sample */
|
|
||||||
double Ph, /* Phase */
|
|
||||||
int Inc, /* increment (1 for right wing or -1 for left) */
|
|
||||||
double dhb) /* filter sampling period */
|
|
||||||
{
|
|
||||||
float a;
|
|
||||||
float *Hp, *Hdp, *End;
|
|
||||||
float v, t;
|
|
||||||
double Ho;
|
|
||||||
|
|
||||||
v = 0.0; /* The output value */
|
|
||||||
Ho = Ph*dhb;
|
|
||||||
End = &Imp[Nwing];
|
|
||||||
if (Inc == 1) /* If doing right wing... */
|
|
||||||
{ /* ...drop extra coeff, so when Ph is */
|
|
||||||
End--; /* 0.5, we don't do too many mult's */
|
|
||||||
if (Ph == 0) /* If the phase is zero... */
|
|
||||||
Ho += dhb; /* ...then we've already skipped the */
|
|
||||||
} /* first sample, so we must also */
|
|
||||||
/* skip ahead in Imp[] and ImpD[] */
|
|
||||||
|
|
||||||
if (Interp)
|
|
||||||
while ((Hp = &Imp[(int)Ho]) < End) {
|
|
||||||
t = *Hp; /* Get IR sample */
|
|
||||||
Hdp = &ImpD[(int)Ho]; /* get interp bits from diff table*/
|
|
||||||
a = Ho - floor(Ho); /* a is logically between 0 and 1 */
|
|
||||||
t += (*Hdp)*a; /* t is now interp'd filter coeff */
|
|
||||||
t *= *Xp; /* Mult coeff by input sample */
|
|
||||||
v += t; /* The filter output */
|
|
||||||
Ho += dhb; /* IR step */
|
|
||||||
Xp += Inc; /* Input signal step. NO CHECK ON BOUNDS */
|
|
||||||
}
|
|
||||||
else
|
|
||||||
while ((Hp = &Imp[(int)Ho]) < End) {
|
|
||||||
t = *Hp; /* Get IR sample */
|
|
||||||
t *= *Xp; /* Mult coeff by input sample */
|
|
||||||
v += t; /* The filter output */
|
|
||||||
Ho += dhb; /* IR step */
|
|
||||||
Xp += Inc; /* Input signal step. NO CHECK ON BOUNDS */
|
|
||||||
}
|
|
||||||
|
|
||||||
return v;
|
|
||||||
}
|
|
||||||
@ -1,28 +0,0 @@
|
|||||||
/**********************************************************************
|
|
||||||
|
|
||||||
resamplesubs.c
|
|
||||||
|
|
||||||
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
|
|
||||||
|
|
||||||
**********************************************************************/
|
|
||||||
|
|
||||||
/* Definitions */
|
|
||||||
#include "resample_defs.h"
|
|
||||||
|
|
||||||
/*
|
|
||||||
* FilterUp() - Applies a filter to a given sample when up-converting.
|
|
||||||
* FilterUD() - Applies a filter to a given sample when up- or down-
|
|
||||||
*/
|
|
||||||
|
|
||||||
float lrsFilterUp(float Imp[], float ImpD[], UWORD Nwing, BOOL Interp,
|
|
||||||
float *Xp, double Ph, int Inc);
|
|
||||||
|
|
||||||
float lrsFilterUD(float Imp[], float ImpD[], UWORD Nwing, BOOL Interp,
|
|
||||||
float *Xp, double Ph, int Inc, double dhb);
|
|
||||||
|
|
||||||
void lrsLpFilter(double c[], int N, double frq, double Beta, int Num);
|
|
||||||
@ -1,347 +0,0 @@
|
|||||||
/**********************************************************************
|
|
||||||
|
|
||||||
resample.c
|
|
||||||
|
|
||||||
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
|
|
||||||
|
|
||||||
This is the main source file, implementing all of the API
|
|
||||||
functions and handling all of the buffering logic.
|
|
||||||
|
|
||||||
**********************************************************************/
|
|
||||||
|
|
||||||
/* External interface */
|
|
||||||
#include "../include/libresample.h"
|
|
||||||
|
|
||||||
/* Definitions */
|
|
||||||
#include "resample_defs.h"
|
|
||||||
|
|
||||||
#include "filterkit.h"
|
|
||||||
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <math.h>
|
|
||||||
#include <string.h>
|
|
||||||
|
|
||||||
typedef struct {
|
|
||||||
float *Imp;
|
|
||||||
float *ImpD;
|
|
||||||
float LpScl;
|
|
||||||
UWORD Nmult;
|
|
||||||
UWORD Nwing;
|
|
||||||
double minFactor;
|
|
||||||
double maxFactor;
|
|
||||||
UWORD XSize;
|
|
||||||
float *X;
|
|
||||||
UWORD Xp; /* Current "now"-sample pointer for input */
|
|
||||||
UWORD Xread; /* Position to put new samples */
|
|
||||||
UWORD Xoff;
|
|
||||||
UWORD YSize;
|
|
||||||
float *Y;
|
|
||||||
UWORD Yp;
|
|
||||||
double Time;
|
|
||||||
} rsdata;
|
|
||||||
|
|
||||||
void *resample_dup(const void * handle)
|
|
||||||
{
|
|
||||||
const rsdata *cpy = (const rsdata *)handle;
|
|
||||||
rsdata *hp = (rsdata *)malloc(sizeof(rsdata));
|
|
||||||
|
|
||||||
hp->minFactor = cpy->minFactor;
|
|
||||||
hp->maxFactor = cpy->maxFactor;
|
|
||||||
hp->Nmult = cpy->Nmult;
|
|
||||||
hp->LpScl = cpy->LpScl;
|
|
||||||
hp->Nwing = cpy->Nwing;
|
|
||||||
|
|
||||||
hp->Imp = (float *)malloc(hp->Nwing * sizeof(float));
|
|
||||||
memcpy(hp->Imp, cpy->Imp, hp->Nwing * sizeof(float));
|
|
||||||
hp->ImpD = (float *)malloc(hp->Nwing * sizeof(float));
|
|
||||||
memcpy(hp->ImpD, cpy->ImpD, hp->Nwing * sizeof(float));
|
|
||||||
|
|
||||||
hp->Xoff = cpy->Xoff;
|
|
||||||
hp->XSize = cpy->XSize;
|
|
||||||
hp->X = (float *)malloc((hp->XSize + hp->Xoff) * sizeof(float));
|
|
||||||
memcpy(hp->X, cpy->X, (hp->XSize + hp->Xoff) * sizeof(float));
|
|
||||||
hp->Xp = cpy->Xp;
|
|
||||||
hp->Xread = cpy->Xread;
|
|
||||||
hp->YSize = cpy->YSize;
|
|
||||||
hp->Y = (float *)malloc(hp->YSize * sizeof(float));
|
|
||||||
memcpy(hp->Y, cpy->Y, hp->YSize * sizeof(float));
|
|
||||||
hp->Yp = cpy->Yp;
|
|
||||||
hp->Time = cpy->Time;
|
|
||||||
|
|
||||||
return (void *)hp;
|
|
||||||
}
|
|
||||||
|
|
||||||
void *resample_open(int highQuality, double minFactor, double maxFactor)
|
|
||||||
{
|
|
||||||
double *Imp64;
|
|
||||||
double Rolloff, Beta;
|
|
||||||
rsdata *hp;
|
|
||||||
UWORD Xoff_min, Xoff_max;
|
|
||||||
int i;
|
|
||||||
|
|
||||||
/* Just exit if we get invalid factors */
|
|
||||||
if (minFactor <= 0.0 || maxFactor <= 0.0 || maxFactor < minFactor) {
|
|
||||||
#if defined(DEBUG)
|
|
||||||
fprintf(stderr,
|
|
||||||
"libresample: "
|
|
||||||
"minFactor and maxFactor must be positive real numbers,\n"
|
|
||||||
"and maxFactor should be larger than minFactor.\n");
|
|
||||||
#endif
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
hp = (rsdata *)malloc(sizeof(rsdata));
|
|
||||||
|
|
||||||
hp->minFactor = minFactor;
|
|
||||||
hp->maxFactor = maxFactor;
|
|
||||||
|
|
||||||
if (highQuality)
|
|
||||||
hp->Nmult = 35;
|
|
||||||
else
|
|
||||||
hp->Nmult = 11;
|
|
||||||
|
|
||||||
hp->LpScl = 1.0;
|
|
||||||
hp->Nwing = Npc*(hp->Nmult-1)/2; /* # of filter coeffs in right wing */
|
|
||||||
|
|
||||||
Rolloff = 0.90;
|
|
||||||
Beta = 6;
|
|
||||||
|
|
||||||
Imp64 = (double *)malloc(hp->Nwing * sizeof(double));
|
|
||||||
|
|
||||||
lrsLpFilter(Imp64, hp->Nwing, 0.5*Rolloff, Beta, Npc);
|
|
||||||
|
|
||||||
hp->Imp = (float *)malloc(hp->Nwing * sizeof(float));
|
|
||||||
hp->ImpD = (float *)malloc(hp->Nwing * sizeof(float));
|
|
||||||
for(i=0; i<hp->Nwing; i++)
|
|
||||||
hp->Imp[i] = Imp64[i];
|
|
||||||
|
|
||||||
/* Storing deltas in ImpD makes linear interpolation
|
|
||||||
of the filter coefficients faster */
|
|
||||||
for (i=0; i<hp->Nwing-1; i++)
|
|
||||||
hp->ImpD[i] = hp->Imp[i+1] - hp->Imp[i];
|
|
||||||
|
|
||||||
/* Last coeff. not interpolated */
|
|
||||||
hp->ImpD[hp->Nwing-1] = - hp->Imp[hp->Nwing-1];
|
|
||||||
|
|
||||||
free(Imp64);
|
|
||||||
|
|
||||||
/* Calc reach of LP filter wing (plus some creeping room) */
|
|
||||||
Xoff_min = ((hp->Nmult+1)/2.0) * MAX(1.0, 1.0/minFactor) + 10;
|
|
||||||
Xoff_max = ((hp->Nmult+1)/2.0) * MAX(1.0, 1.0/maxFactor) + 10;
|
|
||||||
hp->Xoff = MAX(Xoff_min, Xoff_max);
|
|
||||||
|
|
||||||
/* Make the inBuffer size at least 4096, but larger if necessary
|
|
||||||
in order to store the minimum reach of the LP filter and then some.
|
|
||||||
Then allocate the buffer an extra Xoff larger so that
|
|
||||||
we can zero-pad up to Xoff zeros at the end when we reach the
|
|
||||||
end of the input samples. */
|
|
||||||
hp->XSize = MAX(2*hp->Xoff+10, 4096);
|
|
||||||
hp->X = (float *)malloc((hp->XSize + hp->Xoff) * sizeof(float));
|
|
||||||
hp->Xp = hp->Xoff;
|
|
||||||
hp->Xread = hp->Xoff;
|
|
||||||
|
|
||||||
/* Need Xoff zeros at begining of X buffer */
|
|
||||||
for(i=0; i<hp->Xoff; i++)
|
|
||||||
hp->X[i]=0;
|
|
||||||
|
|
||||||
/* Make the outBuffer long enough to hold the entire processed
|
|
||||||
output of one inBuffer */
|
|
||||||
hp->YSize = (int)(((double)hp->XSize)*maxFactor+2.0);
|
|
||||||
hp->Y = (float *)malloc(hp->YSize * sizeof(float));
|
|
||||||
hp->Yp = 0;
|
|
||||||
|
|
||||||
hp->Time = (double)hp->Xoff; /* Current-time pointer for converter */
|
|
||||||
|
|
||||||
return (void *)hp;
|
|
||||||
}
|
|
||||||
|
|
||||||
int resample_get_filter_width(const void *handle)
|
|
||||||
{
|
|
||||||
const rsdata *hp = (const rsdata *)handle;
|
|
||||||
return hp->Xoff;
|
|
||||||
}
|
|
||||||
|
|
||||||
int resample_process(void *handle,
|
|
||||||
double factor,
|
|
||||||
float *inBuffer,
|
|
||||||
int inBufferLen,
|
|
||||||
int lastFlag,
|
|
||||||
int *inBufferUsed, /* output param */
|
|
||||||
float *outBuffer,
|
|
||||||
int outBufferLen)
|
|
||||||
{
|
|
||||||
rsdata *hp = (rsdata *)handle;
|
|
||||||
float *Imp = hp->Imp;
|
|
||||||
float *ImpD = hp->ImpD;
|
|
||||||
float LpScl = hp->LpScl;
|
|
||||||
UWORD Nwing = hp->Nwing;
|
|
||||||
BOOL interpFilt = FALSE; /* TRUE means interpolate filter coeffs */
|
|
||||||
int outSampleCount;
|
|
||||||
UWORD Nout, Ncreep, Nreuse;
|
|
||||||
int Nx;
|
|
||||||
int i, len;
|
|
||||||
|
|
||||||
#if defined(DEBUG)
|
|
||||||
fprintf(stderr, "resample_process: in=%d, out=%d lastFlag=%d\n",
|
|
||||||
inBufferLen, outBufferLen, lastFlag);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/* Initialize inBufferUsed and outSampleCount to 0 */
|
|
||||||
*inBufferUsed = 0;
|
|
||||||
outSampleCount = 0;
|
|
||||||
|
|
||||||
if (factor < hp->minFactor || factor > hp->maxFactor) {
|
|
||||||
#if defined(DEBUG)
|
|
||||||
fprintf(stderr,
|
|
||||||
"libresample: factor %f is not between "
|
|
||||||
"minFactor=%f and maxFactor=%f",
|
|
||||||
factor, hp->minFactor, hp->maxFactor);
|
|
||||||
#endif
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Start by copying any samples still in the Y buffer to the output
|
|
||||||
buffer */
|
|
||||||
if (hp->Yp && (outBufferLen-outSampleCount)>0) {
|
|
||||||
len = MIN(outBufferLen-outSampleCount, hp->Yp);
|
|
||||||
for(i=0; i<len; i++)
|
|
||||||
outBuffer[outSampleCount+i] = hp->Y[i];
|
|
||||||
outSampleCount += len;
|
|
||||||
for(i=0; i<hp->Yp-len; i++)
|
|
||||||
hp->Y[i] = hp->Y[i+len];
|
|
||||||
hp->Yp -= len;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* If there are still output samples left, return now - we need
|
|
||||||
the full output buffer available to us... */
|
|
||||||
if (hp->Yp)
|
|
||||||
return outSampleCount;
|
|
||||||
|
|
||||||
/* Account for increased filter gain when using factors less than 1 */
|
|
||||||
if (factor < 1)
|
|
||||||
LpScl = LpScl*factor;
|
|
||||||
|
|
||||||
for(;;) {
|
|
||||||
|
|
||||||
/* This is the maximum number of samples we can process
|
|
||||||
per loop iteration */
|
|
||||||
|
|
||||||
#if defined(DEBUG)
|
|
||||||
printf("XSize: %d Xoff: %d Xread: %d Xp: %d lastFlag: %d\n",
|
|
||||||
hp->XSize, hp->Xoff, hp->Xread, hp->Xp, lastFlag);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/* Copy as many samples as we can from the input buffer into X */
|
|
||||||
len = hp->XSize - hp->Xread;
|
|
||||||
|
|
||||||
if (len >= (inBufferLen - (*inBufferUsed)))
|
|
||||||
len = (inBufferLen - (*inBufferUsed));
|
|
||||||
|
|
||||||
for(i=0; i<len; i++)
|
|
||||||
hp->X[hp->Xread + i] = inBuffer[(*inBufferUsed) + i];
|
|
||||||
|
|
||||||
*inBufferUsed += len;
|
|
||||||
hp->Xread += len;
|
|
||||||
|
|
||||||
if (lastFlag && (*inBufferUsed == inBufferLen)) {
|
|
||||||
/* If these are the last samples, zero-pad the
|
|
||||||
end of the input buffer and make sure we process
|
|
||||||
all the way to the end */
|
|
||||||
Nx = hp->Xread - hp->Xoff;
|
|
||||||
for(i=0; i<hp->Xoff; i++)
|
|
||||||
hp->X[hp->Xread + i] = 0;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
Nx = hp->Xread - 2 * hp->Xoff;
|
|
||||||
|
|
||||||
#if defined(DEBUG)
|
|
||||||
fprintf(stderr, "new len=%d Nx=%d\n", len, Nx);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
if (Nx <= 0)
|
|
||||||
break;
|
|
||||||
|
|
||||||
/* Resample stuff in input buffer */
|
|
||||||
if (factor >= 1) { /* SrcUp() is faster if we can use it */
|
|
||||||
Nout = lrsSrcUp(hp->X, hp->Y, factor, &hp->Time, Nx,
|
|
||||||
Nwing, LpScl, Imp, ImpD, interpFilt);
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
Nout = lrsSrcUD(hp->X, hp->Y, factor, &hp->Time, Nx,
|
|
||||||
Nwing, LpScl, Imp, ImpD, interpFilt);
|
|
||||||
}
|
|
||||||
|
|
||||||
#if defined(DEBUG)
|
|
||||||
printf("Nout: %d\n", Nout);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
hp->Time -= Nx; /* Move converter Nx samples back in time */
|
|
||||||
hp->Xp += Nx; /* Advance by number of samples processed */
|
|
||||||
|
|
||||||
/* Calc time accumulation in Time */
|
|
||||||
Ncreep = (int)(hp->Time) - hp->Xoff;
|
|
||||||
if (Ncreep) {
|
|
||||||
hp->Time -= Ncreep; /* Remove time accumulation */
|
|
||||||
hp->Xp += Ncreep; /* and add it to read pointer */
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Copy part of input signal that must be re-used */
|
|
||||||
Nreuse = hp->Xread - (hp->Xp - hp->Xoff);
|
|
||||||
|
|
||||||
for (i=0; i<Nreuse; i++)
|
|
||||||
hp->X[i] = hp->X[i + (hp->Xp - hp->Xoff)];
|
|
||||||
|
|
||||||
#if defined(DEBUG)
|
|
||||||
printf("New Xread=%d\n", Nreuse);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
hp->Xread = Nreuse; /* Pos in input buff to read new data into */
|
|
||||||
hp->Xp = hp->Xoff;
|
|
||||||
|
|
||||||
/* Check to see if output buff overflowed (shouldn't happen!) */
|
|
||||||
if (Nout > hp->YSize) {
|
|
||||||
#if defined(DEBUG)
|
|
||||||
printf("Nout: %d YSize: %d\n", Nout, hp->YSize);
|
|
||||||
#endif
|
|
||||||
fprintf(stderr, "libresample: Output array overflow!\n");
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
|
|
||||||
hp->Yp = Nout;
|
|
||||||
|
|
||||||
/* Copy as many samples as possible to the output buffer */
|
|
||||||
if (hp->Yp && (outBufferLen-outSampleCount)>0) {
|
|
||||||
len = MIN(outBufferLen-outSampleCount, hp->Yp);
|
|
||||||
for(i=0; i<len; i++)
|
|
||||||
outBuffer[outSampleCount+i] = hp->Y[i];
|
|
||||||
outSampleCount += len;
|
|
||||||
for(i=0; i<hp->Yp-len; i++)
|
|
||||||
hp->Y[i] = hp->Y[i+len];
|
|
||||||
hp->Yp -= len;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* If there are still output samples left, return now,
|
|
||||||
since we need the full output buffer available */
|
|
||||||
if (hp->Yp)
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
return outSampleCount;
|
|
||||||
}
|
|
||||||
|
|
||||||
void resample_close(void *handle)
|
|
||||||
{
|
|
||||||
rsdata *hp = (rsdata *)handle;
|
|
||||||
free(hp->X);
|
|
||||||
free(hp->Y);
|
|
||||||
free(hp->Imp);
|
|
||||||
free(hp->ImpD);
|
|
||||||
free(hp);
|
|
||||||
}
|
|
||||||
|
|
||||||
@ -1,88 +0,0 @@
|
|||||||
/**********************************************************************
|
|
||||||
|
|
||||||
resample_defs.h
|
|
||||||
|
|
||||||
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
|
|
||||||
|
|
||||||
**********************************************************************/
|
|
||||||
|
|
||||||
#ifndef __RESAMPLE_DEFS__
|
|
||||||
#define __RESAMPLE_DEFS__
|
|
||||||
|
|
||||||
#if 0
|
|
||||||
#if !defined(WIN32) && !defined(__CYGWIN__)
|
|
||||||
#include "config.h"
|
|
||||||
#endif
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifndef TRUE
|
|
||||||
#define TRUE 1
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifndef FALSE
|
|
||||||
#define FALSE 0
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifndef PI
|
|
||||||
#define PI (3.14159265358979232846)
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifndef PI2
|
|
||||||
#define PI2 (6.28318530717958465692)
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#define D2R (0.01745329348) /* (2*pi)/360 */
|
|
||||||
#define R2D (57.29577951) /* 360/(2*pi) */
|
|
||||||
|
|
||||||
#ifndef MAX
|
|
||||||
#define MAX(x,y) ((x)>(y) ?(x):(y))
|
|
||||||
#endif
|
|
||||||
#ifndef MIN
|
|
||||||
#define MIN(x,y) ((x)<(y) ?(x):(y))
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifndef ABS
|
|
||||||
#define ABS(x) ((x)<0 ?(-(x)):(x))
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifndef SGN
|
|
||||||
#define SGN(x) ((x)<0 ?(-1):((x)==0?(0):(1)))
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#if HAVE_INTTYPES_H
|
|
||||||
#include <inttypes.h>
|
|
||||||
typedef char BOOL;
|
|
||||||
typedef int32_t WORD;
|
|
||||||
typedef uint32_t UWORD;
|
|
||||||
#else
|
|
||||||
typedef char BOOL;
|
|
||||||
typedef int WORD;
|
|
||||||
typedef unsigned int UWORD;
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifdef DEBUG
|
|
||||||
#define INLINE
|
|
||||||
#else
|
|
||||||
#define INLINE inline
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/* Accuracy */
|
|
||||||
|
|
||||||
#define Npc 4096
|
|
||||||
|
|
||||||
/* Function prototypes */
|
|
||||||
|
|
||||||
int lrsSrcUp(float X[], float Y[], double factor, double *Time,
|
|
||||||
UWORD Nx, UWORD Nwing, float LpScl,
|
|
||||||
float Imp[], float ImpD[], BOOL Interp);
|
|
||||||
|
|
||||||
int lrsSrcUD(float X[], float Y[], double factor, double *Time,
|
|
||||||
UWORD Nx, UWORD Nwing, float LpScl,
|
|
||||||
float Imp[], float ImpD[], BOOL Interp);
|
|
||||||
|
|
||||||
#endif
|
|
||||||
@ -1,123 +0,0 @@
|
|||||||
/**********************************************************************
|
|
||||||
|
|
||||||
resamplesubs.c
|
|
||||||
|
|
||||||
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
|
|
||||||
|
|
||||||
This file provides the routines that do sample-rate conversion
|
|
||||||
on small arrays, calling routines from filterkit.
|
|
||||||
|
|
||||||
**********************************************************************/
|
|
||||||
|
|
||||||
/* Definitions */
|
|
||||||
#include "resample_defs.h"
|
|
||||||
|
|
||||||
#include "filterkit.h"
|
|
||||||
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <math.h>
|
|
||||||
#include <string.h>
|
|
||||||
|
|
||||||
/* Sampling rate up-conversion only subroutine;
|
|
||||||
* Slightly faster than down-conversion;
|
|
||||||
*/
|
|
||||||
int lrsSrcUp(float X[],
|
|
||||||
float Y[],
|
|
||||||
double factor,
|
|
||||||
double *TimePtr,
|
|
||||||
UWORD Nx,
|
|
||||||
UWORD Nwing,
|
|
||||||
float LpScl,
|
|
||||||
float Imp[],
|
|
||||||
float ImpD[],
|
|
||||||
BOOL Interp)
|
|
||||||
{
|
|
||||||
float *Xp, *Ystart;
|
|
||||||
float v;
|
|
||||||
|
|
||||||
double CurrentTime = *TimePtr;
|
|
||||||
double dt; /* Step through input signal */
|
|
||||||
double endTime; /* When Time reaches EndTime, return to user */
|
|
||||||
|
|
||||||
dt = 1.0/factor; /* Output sampling period */
|
|
||||||
|
|
||||||
Ystart = Y;
|
|
||||||
endTime = CurrentTime + Nx;
|
|
||||||
while (CurrentTime < endTime)
|
|
||||||
{
|
|
||||||
double LeftPhase = CurrentTime-floor(CurrentTime);
|
|
||||||
double RightPhase = 1.0 - LeftPhase;
|
|
||||||
|
|
||||||
Xp = &X[(int)CurrentTime]; /* Ptr to current input sample */
|
|
||||||
/* Perform left-wing inner product */
|
|
||||||
v = lrsFilterUp(Imp, ImpD, Nwing, Interp, Xp,
|
|
||||||
LeftPhase, -1);
|
|
||||||
/* Perform right-wing inner product */
|
|
||||||
v += lrsFilterUp(Imp, ImpD, Nwing, Interp, Xp+1,
|
|
||||||
RightPhase, 1);
|
|
||||||
|
|
||||||
v *= LpScl; /* Normalize for unity filter gain */
|
|
||||||
|
|
||||||
*Y++ = v; /* Deposit output */
|
|
||||||
CurrentTime += dt; /* Move to next sample by time increment */
|
|
||||||
}
|
|
||||||
|
|
||||||
*TimePtr = CurrentTime;
|
|
||||||
return (Y - Ystart); /* Return the number of output samples */
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Sampling rate conversion subroutine */
|
|
||||||
|
|
||||||
int lrsSrcUD(float X[],
|
|
||||||
float Y[],
|
|
||||||
double factor,
|
|
||||||
double *TimePtr,
|
|
||||||
UWORD Nx,
|
|
||||||
UWORD Nwing,
|
|
||||||
float LpScl,
|
|
||||||
float Imp[],
|
|
||||||
float ImpD[],
|
|
||||||
BOOL Interp)
|
|
||||||
{
|
|
||||||
float *Xp, *Ystart;
|
|
||||||
float v;
|
|
||||||
|
|
||||||
double CurrentTime = (*TimePtr);
|
|
||||||
double dh; /* Step through filter impulse response */
|
|
||||||
double dt; /* Step through input signal */
|
|
||||||
double endTime; /* When Time reaches EndTime, return to user */
|
|
||||||
|
|
||||||
dt = 1.0/factor; /* Output sampling period */
|
|
||||||
|
|
||||||
dh = MIN(Npc, factor*Npc); /* Filter sampling period */
|
|
||||||
|
|
||||||
Ystart = Y;
|
|
||||||
endTime = CurrentTime + Nx;
|
|
||||||
while (CurrentTime < endTime)
|
|
||||||
{
|
|
||||||
double LeftPhase = CurrentTime-floor(CurrentTime);
|
|
||||||
double RightPhase = 1.0 - LeftPhase;
|
|
||||||
|
|
||||||
Xp = &X[(int)CurrentTime]; /* Ptr to current input sample */
|
|
||||||
/* Perform left-wing inner product */
|
|
||||||
v = lrsFilterUD(Imp, ImpD, Nwing, Interp, Xp,
|
|
||||||
LeftPhase, -1, dh);
|
|
||||||
/* Perform right-wing inner product */
|
|
||||||
v += lrsFilterUD(Imp, ImpD, Nwing, Interp, Xp+1,
|
|
||||||
RightPhase, 1, dh);
|
|
||||||
|
|
||||||
v *= LpScl; /* Normalize for unity filter gain */
|
|
||||||
*Y++ = v; /* Deposit output */
|
|
||||||
|
|
||||||
CurrentTime += dt; /* Move to next sample by time increment */
|
|
||||||
}
|
|
||||||
|
|
||||||
*TimePtr = CurrentTime;
|
|
||||||
return (Y - Ystart); /* Return the number of output samples */
|
|
||||||
}
|
|
||||||
@ -1,183 +0,0 @@
|
|||||||
/**********************************************************************
|
|
||||||
|
|
||||||
compareresample.c
|
|
||||||
|
|
||||||
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
|
|
||||||
|
|
||||||
**********************************************************************/
|
|
||||||
|
|
||||||
#include "../include/libresample.h"
|
|
||||||
|
|
||||||
#include <samplerate.h>
|
|
||||||
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <math.h>
|
|
||||||
|
|
||||||
#include <sys/time.h>
|
|
||||||
|
|
||||||
#define MIN(A, B) (A) < (B)? (A) : (B)
|
|
||||||
|
|
||||||
void dostat(char *name, float *d1, float *d2, int len)
|
|
||||||
{
|
|
||||||
int i;
|
|
||||||
double sum, sumsq, err, rmserr;
|
|
||||||
|
|
||||||
sum = 0.0;
|
|
||||||
sumsq = 0.0;
|
|
||||||
for(i=0; i<len; i++) {
|
|
||||||
double diff = d1[i] - d2[i];
|
|
||||||
sum += fabs(diff);
|
|
||||||
sumsq += diff * diff;
|
|
||||||
}
|
|
||||||
err = sum / len;
|
|
||||||
rmserr = sqrt(sumsq / len);
|
|
||||||
printf(" %s: Avg err: %f RMS err: %f\n", name, err, rmserr);
|
|
||||||
}
|
|
||||||
|
|
||||||
void runtest(float *src, int srclen,
|
|
||||||
float *ans, int anslen,
|
|
||||||
double factor)
|
|
||||||
{
|
|
||||||
struct timeval tv0, tv1;
|
|
||||||
int dstlen = (int)(srclen * factor);
|
|
||||||
float *dst_rs = (float *)malloc((dstlen+100) * sizeof(float));
|
|
||||||
float *dst_rabbit = (float *)malloc((dstlen+100) * sizeof(float));
|
|
||||||
void *handle;
|
|
||||||
SRC_DATA rabbit;
|
|
||||||
double deltat;
|
|
||||||
int srcblocksize = srclen;
|
|
||||||
int dstblocksize = dstlen;
|
|
||||||
int i, out, out_rabbit, o, srcused;
|
|
||||||
int statlen, srcpos;
|
|
||||||
|
|
||||||
/* do resample */
|
|
||||||
|
|
||||||
for(i=0; i<dstlen+100; i++)
|
|
||||||
dst_rs[i] = -99.0;
|
|
||||||
|
|
||||||
gettimeofday(&tv0, NULL);
|
|
||||||
|
|
||||||
handle = resample_open(1, factor, factor);
|
|
||||||
out = 0;
|
|
||||||
srcpos = 0;
|
|
||||||
for(;;) {
|
|
||||||
int srcBlock = MIN(srclen-srcpos, srcblocksize);
|
|
||||||
int lastFlag = (srcBlock == srclen-srcpos);
|
|
||||||
|
|
||||||
o = resample_process(handle, factor,
|
|
||||||
&src[srcpos], srcBlock,
|
|
||||||
lastFlag, &srcused,
|
|
||||||
&dst_rs[out], MIN(dstlen-out, dstblocksize));
|
|
||||||
srcpos += srcused;
|
|
||||||
if (o >= 0)
|
|
||||||
out += o;
|
|
||||||
if (o < 0 || (o == 0 && srcpos == srclen))
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
resample_close(handle);
|
|
||||||
|
|
||||||
gettimeofday(&tv1, NULL);
|
|
||||||
deltat =
|
|
||||||
(tv1.tv_sec + tv1.tv_usec * 0.000001) -
|
|
||||||
(tv0.tv_sec + tv0.tv_usec * 0.000001);
|
|
||||||
|
|
||||||
if (o < 0) {
|
|
||||||
printf("Error: resample_process returned an error: %d\n", o);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (out <= 0) {
|
|
||||||
printf("Error: resample_process returned %d samples\n", out);
|
|
||||||
free(dst_rs);
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
printf(" resample: %.3f seconds, %d outputs\n", deltat, out);
|
|
||||||
|
|
||||||
/* do rabbit (Erik's libsamplerate) */
|
|
||||||
|
|
||||||
for(i=0; i<dstlen+100; i++)
|
|
||||||
dst_rabbit[i] = -99.0;
|
|
||||||
|
|
||||||
rabbit.data_in = src;
|
|
||||||
rabbit.data_out = dst_rabbit;
|
|
||||||
rabbit.input_frames = srclen;
|
|
||||||
rabbit.output_frames = dstlen;
|
|
||||||
rabbit.input_frames_used = 0;
|
|
||||||
rabbit.output_frames_gen = 0;
|
|
||||||
rabbit.end_of_input = 1;
|
|
||||||
rabbit.src_ratio = factor;
|
|
||||||
|
|
||||||
gettimeofday(&tv0, NULL);
|
|
||||||
|
|
||||||
/* src_simple(&rabbit, SRC_SINC_BEST_QUALITY, 1); */
|
|
||||||
src_simple(&rabbit, SRC_SINC_FASTEST, 1);
|
|
||||||
/* src_simple(&rabbit, SRC_LINEAR, 1); */
|
|
||||||
|
|
||||||
gettimeofday(&tv1, NULL);
|
|
||||||
deltat =
|
|
||||||
(tv1.tv_sec + tv1.tv_usec * 0.000001) -
|
|
||||||
(tv0.tv_sec + tv0.tv_usec * 0.000001);
|
|
||||||
|
|
||||||
out_rabbit = rabbit.output_frames_gen;
|
|
||||||
|
|
||||||
printf(" rabbit : %.3f seconds, %d outputs\n",
|
|
||||||
deltat, out_rabbit);
|
|
||||||
|
|
||||||
statlen = MIN(out, out_rabbit);
|
|
||||||
if (anslen > 0)
|
|
||||||
statlen = MIN(statlen, anslen);
|
|
||||||
|
|
||||||
if (ans) {
|
|
||||||
dostat("resample ", dst_rs, ans, statlen);
|
|
||||||
dostat("rabbit ", dst_rabbit, ans, statlen);
|
|
||||||
}
|
|
||||||
dostat( "RS vs rabbit", dst_rs, dst_rabbit, statlen);
|
|
||||||
|
|
||||||
free(dst_rs);
|
|
||||||
free(dst_rabbit);
|
|
||||||
}
|
|
||||||
|
|
||||||
int main(int argc, char **argv)
|
|
||||||
{
|
|
||||||
int i, srclen;
|
|
||||||
float *src, *ans;
|
|
||||||
|
|
||||||
printf("\n*** sin wave, factor = 1.0 *** \n\n");
|
|
||||||
srclen = 100000;
|
|
||||||
src = malloc(srclen * sizeof(float));
|
|
||||||
for(i=0; i<srclen; i++)
|
|
||||||
src[i] = sin(i/100.0);
|
|
||||||
|
|
||||||
runtest(src, srclen, src, srclen, 1.0);
|
|
||||||
|
|
||||||
printf("\n*** sin wave, factor = 0.25 *** \n\n");
|
|
||||||
srclen = 100000;
|
|
||||||
for(i=0; i<srclen; i++)
|
|
||||||
src[i] = sin(i/100.0);
|
|
||||||
ans = malloc((srclen/4) * sizeof(float));
|
|
||||||
for(i=0; i<srclen/4; i++)
|
|
||||||
ans[i] = sin(i/25.0);
|
|
||||||
|
|
||||||
runtest(src, srclen, ans, srclen/4, 0.25);
|
|
||||||
free(ans);
|
|
||||||
|
|
||||||
printf("\n*** sin wave, factor = 4.0 *** \n\n");
|
|
||||||
srclen = 20000;
|
|
||||||
for(i=0; i<srclen; i++)
|
|
||||||
src[i] = sin(i/100.0);
|
|
||||||
ans = malloc((srclen*4) * sizeof(float));
|
|
||||||
for(i=0; i<srclen*4; i++)
|
|
||||||
ans[i] = sin(i/400.0);
|
|
||||||
|
|
||||||
runtest(src, srclen, ans, srclen*4, 4.0);
|
|
||||||
free(ans);
|
|
||||||
free(src);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
@ -1,213 +0,0 @@
|
|||||||
/**********************************************************************
|
|
||||||
|
|
||||||
resample-sndfile.c
|
|
||||||
|
|
||||||
Written 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
|
|
||||||
|
|
||||||
**********************************************************************/
|
|
||||||
|
|
||||||
#include "../include/libresample.h"
|
|
||||||
|
|
||||||
#include <sndfile.h>
|
|
||||||
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <string.h>
|
|
||||||
#include <math.h>
|
|
||||||
|
|
||||||
#include <sys/time.h>
|
|
||||||
|
|
||||||
#define MIN(A, B) (A) < (B)? (A) : (B)
|
|
||||||
|
|
||||||
void usage(char *progname)
|
|
||||||
{
|
|
||||||
fprintf(stderr, "Usage: %s -by <ratio> <input> <output>\n", progname);
|
|
||||||
fprintf(stderr, " %s -to <rate> <input> <output>\n", progname);
|
|
||||||
fprintf(stderr, "\n");
|
|
||||||
exit(-1);
|
|
||||||
}
|
|
||||||
|
|
||||||
int main(int argc, char **argv)
|
|
||||||
{
|
|
||||||
SNDFILE *srcfile, *dstfile;
|
|
||||||
SF_INFO srcinfo, dstinfo;
|
|
||||||
SF_FORMAT_INFO formatinfo;
|
|
||||||
char *extension;
|
|
||||||
void **handle;
|
|
||||||
int channels;
|
|
||||||
int srclen, dstlen;
|
|
||||||
float *src, *srci;
|
|
||||||
float *dst, *dsti;
|
|
||||||
double ratio = 0.0;
|
|
||||||
double srcrate;
|
|
||||||
double dstrate = 0.0;
|
|
||||||
struct timeval tv0, tv1;
|
|
||||||
double deltat;
|
|
||||||
int numformats;
|
|
||||||
int pos, bufferpos, outcount;
|
|
||||||
int i, c;
|
|
||||||
|
|
||||||
if (argc != 5)
|
|
||||||
usage(argv[0]);
|
|
||||||
|
|
||||||
if (!strcmp(argv[1], "-by")) {
|
|
||||||
ratio = atof(argv[2]);
|
|
||||||
if (ratio <= 0.0) {
|
|
||||||
fprintf(stderr, "Ratio of %f is illegal\n", ratio);
|
|
||||||
usage(argv[0]);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else if (!strcmp(argv[1], "-to")) {
|
|
||||||
dstrate = atof(argv[2]);
|
|
||||||
if (dstrate < 10.0 || dstrate > 100000.0) {
|
|
||||||
fprintf(stderr, "Sample rate of %f is illegal\n", dstrate);
|
|
||||||
usage(argv[0]);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else
|
|
||||||
usage(argv[0]);
|
|
||||||
|
|
||||||
memset(&srcinfo, 0, sizeof(srcinfo));
|
|
||||||
memset(&dstinfo, 0, sizeof(dstinfo));
|
|
||||||
srcfile = sf_open(argv[3], SFM_READ, &srcinfo);
|
|
||||||
if (!srcfile) {
|
|
||||||
fprintf(stderr, "%s", sf_strerror(NULL));
|
|
||||||
exit(-1);
|
|
||||||
}
|
|
||||||
|
|
||||||
srcrate = srcinfo.samplerate;
|
|
||||||
if (dstrate == 0.0)
|
|
||||||
dstrate = srcrate * ratio;
|
|
||||||
else
|
|
||||||
ratio = dstrate / srcrate;
|
|
||||||
|
|
||||||
channels = srcinfo.channels;
|
|
||||||
|
|
||||||
/* figure out format of destination file */
|
|
||||||
|
|
||||||
extension = strstr(argv[4], ".");
|
|
||||||
if (extension) {
|
|
||||||
extension++;
|
|
||||||
sf_command(NULL, SFC_GET_FORMAT_MAJOR_COUNT,
|
|
||||||
&numformats, sizeof(numformats));
|
|
||||||
for(i=0; i<numformats; i++) {
|
|
||||||
memset(&formatinfo, 0, sizeof(formatinfo));
|
|
||||||
formatinfo.format = i;
|
|
||||||
sf_command(NULL, SFC_GET_FORMAT_MAJOR,
|
|
||||||
&formatinfo, sizeof(formatinfo));
|
|
||||||
if (!strcmp(formatinfo.extension, extension)) {
|
|
||||||
printf("Using %s for output format.\n", formatinfo.name);
|
|
||||||
dstinfo.format = formatinfo.format |
|
|
||||||
(srcinfo.format & SF_FORMAT_SUBMASK);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!dstinfo.format) {
|
|
||||||
if (extension)
|
|
||||||
printf("Warning: output format (%s) not recognized, "
|
|
||||||
"using same as input format.\n",
|
|
||||||
extension);
|
|
||||||
dstinfo.format = srcinfo.format;
|
|
||||||
}
|
|
||||||
|
|
||||||
dstinfo.samplerate = (int)(dstrate + 0.5);
|
|
||||||
dstinfo.channels = channels;
|
|
||||||
|
|
||||||
dstfile = sf_open(argv[4], SFM_WRITE, &dstinfo);
|
|
||||||
if (!dstfile) {
|
|
||||||
fprintf(stderr, "%s", sf_strerror(NULL));
|
|
||||||
exit(-1);
|
|
||||||
}
|
|
||||||
|
|
||||||
printf("Source: %s (%d frames, %.2f Hz)\n",
|
|
||||||
argv[3], (int)srcinfo.frames, srcrate);
|
|
||||||
printf("Destination: %s (%.2f Hz, ratio=%.5f)\n", argv[4],
|
|
||||||
dstrate, ratio);
|
|
||||||
|
|
||||||
srclen = 4096;
|
|
||||||
dstlen = (srclen * ratio + 1000);
|
|
||||||
srci = (float *)malloc(srclen * channels * sizeof(float));
|
|
||||||
dsti = (float *)malloc(dstlen * channels * sizeof(float));
|
|
||||||
src = (float *)malloc(srclen * sizeof(float));
|
|
||||||
dst = (float *)malloc(dstlen * sizeof(float));
|
|
||||||
|
|
||||||
handle = (void **)malloc(channels * sizeof(void *));
|
|
||||||
for(c=0; c<channels; c++)
|
|
||||||
handle[c] = resample_open(1, ratio, ratio);
|
|
||||||
|
|
||||||
gettimeofday(&tv0, NULL);
|
|
||||||
|
|
||||||
pos = 0;
|
|
||||||
bufferpos = 0;
|
|
||||||
outcount = 0;
|
|
||||||
while(pos < srcinfo.frames) {
|
|
||||||
int block = MIN(srclen-bufferpos, srcinfo.frames-pos);
|
|
||||||
int lastFlag = (pos+block == srcinfo.frames);
|
|
||||||
int inUsed, inUsed2=0, out=0, out2=0;
|
|
||||||
|
|
||||||
sf_readf_float(srcfile, &srci[bufferpos*channels], block);
|
|
||||||
block += bufferpos;
|
|
||||||
|
|
||||||
for(c=0; c<channels; c++) {
|
|
||||||
for(i=0; i<block; i++)
|
|
||||||
src[i] = srci[i*channels+c];
|
|
||||||
|
|
||||||
inUsed = 0;
|
|
||||||
out = resample_process(handle[c], ratio, src, block, lastFlag,
|
|
||||||
&inUsed, dst, dstlen);
|
|
||||||
if (c==0) {
|
|
||||||
inUsed2 = inUsed;
|
|
||||||
out2 = out;
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
if (inUsed2 != inUsed || out2 != out) {
|
|
||||||
fprintf(stderr, "Fatal error: channels out of sync!\n");
|
|
||||||
exit(-1);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
for(i=0; i<out; i++)
|
|
||||||
{
|
|
||||||
if(dst[i] <= -1)
|
|
||||||
dsti[i*channels+c] = -1;
|
|
||||||
else if(dst[i] >= 1)
|
|
||||||
dsti[i*channels+c] = 1;
|
|
||||||
else
|
|
||||||
dsti[i*channels+c] = dst[i];
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
sf_writef_float(dstfile, dsti, out);
|
|
||||||
|
|
||||||
bufferpos = block - inUsed;
|
|
||||||
for(i=0; i<bufferpos*channels; i++)
|
|
||||||
srci[i] = srci[i+(inUsed*channels)];
|
|
||||||
pos += inUsed;
|
|
||||||
outcount += out;
|
|
||||||
}
|
|
||||||
|
|
||||||
sf_close(srcfile);
|
|
||||||
sf_close(dstfile);
|
|
||||||
|
|
||||||
gettimeofday(&tv1, NULL);
|
|
||||||
deltat =
|
|
||||||
(tv1.tv_sec + tv1.tv_usec * 0.000001) -
|
|
||||||
(tv0.tv_sec + tv0.tv_usec * 0.000001);
|
|
||||||
|
|
||||||
printf("Elapsed time: %.3f seconds\n", deltat);
|
|
||||||
printf("%d frames written to output file\n", outcount);
|
|
||||||
|
|
||||||
free(src);
|
|
||||||
free(srci);
|
|
||||||
free(dst);
|
|
||||||
free(dsti);
|
|
||||||
|
|
||||||
exit(0);
|
|
||||||
}
|
|
||||||
@ -1,182 +0,0 @@
|
|||||||
/**********************************************************************
|
|
||||||
|
|
||||||
testresample.c
|
|
||||||
|
|
||||||
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
|
|
||||||
|
|
||||||
**********************************************************************/
|
|
||||||
|
|
||||||
#include "../include/libresample.h"
|
|
||||||
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <math.h>
|
|
||||||
|
|
||||||
#define MIN(A, B) (A) < (B)? (A) : (B)
|
|
||||||
|
|
||||||
void runtest(int srclen, double freq, double factor,
|
|
||||||
int srcblocksize, int dstblocksize)
|
|
||||||
{
|
|
||||||
int expectedlen = (int)(srclen * factor);
|
|
||||||
int dstlen = expectedlen + 1000;
|
|
||||||
float *src = (float *)malloc((srclen+100) * sizeof(float));
|
|
||||||
float *dst = (float *)malloc((dstlen+100) * sizeof(float));
|
|
||||||
void *handle;
|
|
||||||
double sum, sumsq, err, rmserr;
|
|
||||||
int i, out, o, srcused, errcount, rangecount;
|
|
||||||
int statlen, srcpos, lendiff;
|
|
||||||
int fwidth;
|
|
||||||
|
|
||||||
printf("-- srclen: %d sin freq: %.1f factor: %.3f srcblk: %d dstblk: %d\n",
|
|
||||||
srclen, freq, factor, srcblocksize, dstblocksize);
|
|
||||||
|
|
||||||
for(i=0; i<srclen; i++)
|
|
||||||
src[i] = sin(i/freq);
|
|
||||||
for(i=srclen; i<srclen+100; i++)
|
|
||||||
src[i] = -99.0;
|
|
||||||
|
|
||||||
for(i=0; i<dstlen+100; i++)
|
|
||||||
dst[i] = -99.0;
|
|
||||||
|
|
||||||
handle = resample_open(1, factor, factor);
|
|
||||||
fwidth = resample_get_filter_width(handle);
|
|
||||||
out = 0;
|
|
||||||
srcpos = 0;
|
|
||||||
for(;;) {
|
|
||||||
int srcBlock = MIN(srclen-srcpos, srcblocksize);
|
|
||||||
int lastFlag = (srcBlock == srclen-srcpos);
|
|
||||||
|
|
||||||
o = resample_process(handle, factor,
|
|
||||||
&src[srcpos], srcBlock,
|
|
||||||
lastFlag, &srcused,
|
|
||||||
&dst[out], MIN(dstlen-out, dstblocksize));
|
|
||||||
srcpos += srcused;
|
|
||||||
if (o >= 0)
|
|
||||||
out += o;
|
|
||||||
if (o < 0 || (o == 0 && srcpos == srclen))
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
resample_close(handle);
|
|
||||||
|
|
||||||
if (o < 0) {
|
|
||||||
printf("Error: resample_process returned an error: %d\n", o);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (out <= 0) {
|
|
||||||
printf("Error: resample_process returned %d samples\n", out);
|
|
||||||
free(src);
|
|
||||||
free(dst);
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
lendiff = abs(out - expectedlen);
|
|
||||||
if (lendiff > (int)(2*factor + 1.0)) {
|
|
||||||
printf(" Expected ~%d, got %d samples out\n",
|
|
||||||
expectedlen, out);
|
|
||||||
}
|
|
||||||
|
|
||||||
sum = 0.0;
|
|
||||||
sumsq = 0.0;
|
|
||||||
errcount = 0.0;
|
|
||||||
|
|
||||||
/* Don't compute statistics on all output values; the last few
|
|
||||||
are guaranteed to be off because it's based on far less
|
|
||||||
interpolation. */
|
|
||||||
statlen = out - fwidth;
|
|
||||||
|
|
||||||
for(i=0; i<statlen; i++) {
|
|
||||||
double diff = sin((i/freq)/factor) - dst[i];
|
|
||||||
if (fabs(diff) > 0.05) {
|
|
||||||
if (errcount == 0)
|
|
||||||
printf(" First error at i=%d: expected %.3f, got %.3f\n",
|
|
||||||
i, sin((i/freq)/factor), dst[i]);
|
|
||||||
errcount++;
|
|
||||||
}
|
|
||||||
sum += fabs(diff);
|
|
||||||
sumsq += diff * diff;
|
|
||||||
}
|
|
||||||
|
|
||||||
rangecount = 0;
|
|
||||||
for(i=0; i<statlen; i++) {
|
|
||||||
if (dst[i] < -1.01 || dst[i] > 1.01) {
|
|
||||||
if (rangecount == 0)
|
|
||||||
printf(" Error at i=%d: value is %.3f\n", i, dst[i]);
|
|
||||||
rangecount++;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (rangecount > 1)
|
|
||||||
printf(" At least %d samples were out of range\n", rangecount);
|
|
||||||
|
|
||||||
if (errcount > 0) {
|
|
||||||
i = out - 1;
|
|
||||||
printf(" i=%d: expected %.3f, got %.3f\n",
|
|
||||||
i, sin((i/freq)/factor), dst[i]);
|
|
||||||
printf(" At least %d samples had significant error.\n", errcount);
|
|
||||||
}
|
|
||||||
err = sum / statlen;
|
|
||||||
rmserr = sqrt(sumsq / statlen);
|
|
||||||
printf(" Out: %d samples Avg err: %f RMS err: %f\n", out, err, rmserr);
|
|
||||||
free(src);
|
|
||||||
free(dst);
|
|
||||||
}
|
|
||||||
|
|
||||||
int main(int argc, char **argv)
|
|
||||||
{
|
|
||||||
int i, srclen, dstlen, ifreq;
|
|
||||||
double factor;
|
|
||||||
|
|
||||||
printf("\n*** Vary source block size*** \n\n");
|
|
||||||
srclen = 10000;
|
|
||||||
ifreq = 100;
|
|
||||||
for(i=0; i<20; i++) {
|
|
||||||
factor = ((rand() % 16) + 1) / 4.0;
|
|
||||||
dstlen = (int)(srclen * factor + 10);
|
|
||||||
runtest(srclen, (double)ifreq, factor, 64, dstlen);
|
|
||||||
runtest(srclen, (double)ifreq, factor, 32, dstlen);
|
|
||||||
runtest(srclen, (double)ifreq, factor, 8, dstlen);
|
|
||||||
runtest(srclen, (double)ifreq, factor, 2, dstlen);
|
|
||||||
runtest(srclen, (double)ifreq, factor, srclen, dstlen);
|
|
||||||
}
|
|
||||||
|
|
||||||
printf("\n*** Vary dest block size ***\n\n");
|
|
||||||
srclen = 10000;
|
|
||||||
ifreq = 100;
|
|
||||||
for(i=0; i<20; i++) {
|
|
||||||
factor = ((rand() % 16) + 1) / 4.0;
|
|
||||||
runtest(srclen, (double)ifreq, factor, srclen, 32);
|
|
||||||
dstlen = (int)(srclen * factor + 10);
|
|
||||||
runtest(srclen, (double)ifreq, factor, srclen, dstlen);
|
|
||||||
}
|
|
||||||
|
|
||||||
printf("\n*** Resample factor 1.0, testing different srclen ***\n\n");
|
|
||||||
ifreq = 40;
|
|
||||||
for(i=0; i<100; i++) {
|
|
||||||
srclen = (rand() % 30000) + 10;
|
|
||||||
dstlen = (int)(srclen + 10);
|
|
||||||
runtest(srclen, (double)ifreq, 1.0, srclen, dstlen);
|
|
||||||
}
|
|
||||||
|
|
||||||
printf("\n*** Resample factor 1.0, testing different sin freq ***\n\n");
|
|
||||||
srclen = 10000;
|
|
||||||
for(i=0; i<100; i++) {
|
|
||||||
ifreq = ((int)rand() % 10000) + 1;
|
|
||||||
dstlen = (int)(srclen * 10);
|
|
||||||
runtest(srclen, (double)ifreq, 1.0, srclen, dstlen);
|
|
||||||
}
|
|
||||||
|
|
||||||
printf("\n*** Resample with different factors ***\n\n");
|
|
||||||
srclen = 10000;
|
|
||||||
ifreq = 100;
|
|
||||||
for(i=0; i<100; i++) {
|
|
||||||
factor = ((rand() % 64) + 1) / 4.0;
|
|
||||||
dstlen = (int)(srclen * factor + 10);
|
|
||||||
runtest(srclen, (double)ifreq, factor, srclen, dstlen);
|
|
||||||
}
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
@ -1,116 +0,0 @@
|
|||||||
# Microsoft Developer Studio Project File - Name="libresample" - Package Owner=<4>
|
|
||||||
# Microsoft Developer Studio Generated Build File, Format Version 6.00
|
|
||||||
# ** DO NOT EDIT **
|
|
||||||
|
|
||||||
# TARGTYPE "Win32 (x86) Static Library" 0x0104
|
|
||||||
|
|
||||||
CFG=libresample - Win32 Debug
|
|
||||||
!MESSAGE This is not a valid makefile. To build this project using NMAKE,
|
|
||||||
!MESSAGE use the Export Makefile command and run
|
|
||||||
!MESSAGE
|
|
||||||
!MESSAGE NMAKE /f "libresample.mak".
|
|
||||||
!MESSAGE
|
|
||||||
!MESSAGE You can specify a configuration when running NMAKE
|
|
||||||
!MESSAGE by defining the macro CFG on the command line. For example:
|
|
||||||
!MESSAGE
|
|
||||||
!MESSAGE NMAKE /f "libresample.mak" CFG="libresample - Win32 Debug"
|
|
||||||
!MESSAGE
|
|
||||||
!MESSAGE Possible choices for configuration are:
|
|
||||||
!MESSAGE
|
|
||||||
!MESSAGE "libresample - Win32 Release" (based on "Win32 (x86) Static Library")
|
|
||||||
!MESSAGE "libresample - Win32 Debug" (based on "Win32 (x86) Static Library")
|
|
||||||
!MESSAGE
|
|
||||||
|
|
||||||
# Begin Project
|
|
||||||
# PROP AllowPerConfigDependencies 0
|
|
||||||
# PROP Scc_ProjName ""
|
|
||||||
# PROP Scc_LocalPath ""
|
|
||||||
CPP=cl.exe
|
|
||||||
RSC=rc.exe
|
|
||||||
|
|
||||||
!IF "$(CFG)" == "libresample - Win32 Release"
|
|
||||||
|
|
||||||
# PROP BASE Use_MFC 0
|
|
||||||
# PROP BASE Use_Debug_Libraries 0
|
|
||||||
# PROP BASE Output_Dir "Release"
|
|
||||||
# PROP BASE Intermediate_Dir "Release"
|
|
||||||
# PROP BASE Target_Dir ""
|
|
||||||
# PROP Use_MFC 0
|
|
||||||
# PROP Use_Debug_Libraries 0
|
|
||||||
# PROP Output_Dir "Release"
|
|
||||||
# PROP Intermediate_Dir "Release"
|
|
||||||
# PROP Target_Dir ""
|
|
||||||
# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_MBCS" /D "_LIB" /YX /FD /c
|
|
||||||
# ADD CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_MBCS" /D "_LIB" /YX /FD /c
|
|
||||||
# ADD BASE RSC /l 0x409 /d "NDEBUG"
|
|
||||||
# ADD RSC /l 0x409 /d "NDEBUG"
|
|
||||||
BSC32=bscmake.exe
|
|
||||||
# ADD BASE BSC32 /nologo
|
|
||||||
# ADD BSC32 /nologo
|
|
||||||
LIB32=link.exe -lib
|
|
||||||
# ADD BASE LIB32 /nologo
|
|
||||||
# ADD LIB32 /nologo /out:"libresample.lib"
|
|
||||||
|
|
||||||
!ELSEIF "$(CFG)" == "libresample - Win32 Debug"
|
|
||||||
|
|
||||||
# PROP BASE Use_MFC 0
|
|
||||||
# PROP BASE Use_Debug_Libraries 1
|
|
||||||
# PROP BASE Output_Dir "Debug"
|
|
||||||
# PROP BASE Intermediate_Dir "Debug"
|
|
||||||
# PROP BASE Target_Dir ""
|
|
||||||
# PROP Use_MFC 0
|
|
||||||
# PROP Use_Debug_Libraries 1
|
|
||||||
# PROP Output_Dir "Debug"
|
|
||||||
# PROP Intermediate_Dir "Debug"
|
|
||||||
# PROP Target_Dir ""
|
|
||||||
# ADD BASE CPP /nologo /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_MBCS" /D "_LIB" /YX /FD /GZ /c
|
|
||||||
# ADD CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_MBCS" /D "_LIB" /YX /FD /GZ /c
|
|
||||||
# ADD BASE RSC /l 0x409 /d "_DEBUG"
|
|
||||||
# ADD RSC /l 0x409 /d "_DEBUG"
|
|
||||||
BSC32=bscmake.exe
|
|
||||||
# ADD BASE BSC32 /nologo
|
|
||||||
# ADD BSC32 /nologo
|
|
||||||
LIB32=link.exe -lib
|
|
||||||
# ADD BASE LIB32 /nologo
|
|
||||||
# ADD LIB32 /nologo /out:"libresampled.lib"
|
|
||||||
|
|
||||||
!ENDIF
|
|
||||||
|
|
||||||
# Begin Target
|
|
||||||
|
|
||||||
# Name "libresample - Win32 Release"
|
|
||||||
# Name "libresample - Win32 Debug"
|
|
||||||
# Begin Group "Source Files"
|
|
||||||
|
|
||||||
# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
|
|
||||||
# Begin Source File
|
|
||||||
|
|
||||||
SOURCE=..\src\filterkit.c
|
|
||||||
# End Source File
|
|
||||||
# Begin Source File
|
|
||||||
|
|
||||||
SOURCE=..\src\resample.c
|
|
||||||
# End Source File
|
|
||||||
# Begin Source File
|
|
||||||
|
|
||||||
SOURCE=..\src\resamplesubs.c
|
|
||||||
# End Source File
|
|
||||||
# End Group
|
|
||||||
# Begin Group "Header Files"
|
|
||||||
|
|
||||||
# PROP Default_Filter "h;hpp;hxx;hm;inl"
|
|
||||||
# Begin Source File
|
|
||||||
|
|
||||||
SOURCE=..\src\filterkit.h
|
|
||||||
# End Source File
|
|
||||||
# Begin Source File
|
|
||||||
|
|
||||||
SOURCE=..\include\libresample.h
|
|
||||||
# End Source File
|
|
||||||
# Begin Source File
|
|
||||||
|
|
||||||
SOURCE=..\src\resample_defs.h
|
|
||||||
# End Source File
|
|
||||||
# End Group
|
|
||||||
# End Target
|
|
||||||
# End Project
|
|
||||||
@ -1,192 +0,0 @@
|
|||||||
<?xml version="1.0" encoding="Windows-1252"?>
|
|
||||||
<VisualStudioProject
|
|
||||||
ProjectType="Visual C++"
|
|
||||||
Version="7.10"
|
|
||||||
Name="libresample"
|
|
||||||
SccProjectName=""
|
|
||||||
SccLocalPath="">
|
|
||||||
<Platforms>
|
|
||||||
<Platform
|
|
||||||
Name="Win32"/>
|
|
||||||
</Platforms>
|
|
||||||
<Configurations>
|
|
||||||
<Configuration
|
|
||||||
Name="Debug|Win32"
|
|
||||||
OutputDirectory=".\Debug"
|
|
||||||
IntermediateDirectory=".\Debug"
|
|
||||||
ConfigurationType="4"
|
|
||||||
UseOfMFC="0"
|
|
||||||
ATLMinimizesCRunTimeLibraryUsage="FALSE"
|
|
||||||
CharacterSet="2">
|
|
||||||
<Tool
|
|
||||||
Name="VCCLCompilerTool"
|
|
||||||
Optimization="0"
|
|
||||||
PreprocessorDefinitions="WIN32;_DEBUG;_LIB"
|
|
||||||
BasicRuntimeChecks="3"
|
|
||||||
RuntimeLibrary="1"
|
|
||||||
UsePrecompiledHeader="2"
|
|
||||||
PrecompiledHeaderFile=".\Debug/libresample.pch"
|
|
||||||
AssemblerListingLocation=".\Debug/"
|
|
||||||
ObjectFile=".\Debug/"
|
|
||||||
ProgramDataBaseFileName=".\Debug/"
|
|
||||||
WarningLevel="3"
|
|
||||||
SuppressStartupBanner="TRUE"
|
|
||||||
DebugInformationFormat="4"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCCustomBuildTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCLibrarianTool"
|
|
||||||
OutputFile="libresampled.lib"
|
|
||||||
SuppressStartupBanner="TRUE"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCMIDLTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCPostBuildEventTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCPreBuildEventTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCPreLinkEventTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCResourceCompilerTool"
|
|
||||||
PreprocessorDefinitions="_DEBUG"
|
|
||||||
Culture="1033"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCWebServiceProxyGeneratorTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCXMLDataGeneratorTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCManagedWrapperGeneratorTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
|
|
||||||
</Configuration>
|
|
||||||
<Configuration
|
|
||||||
Name="Release|Win32"
|
|
||||||
OutputDirectory=".\Release"
|
|
||||||
IntermediateDirectory=".\Release"
|
|
||||||
ConfigurationType="4"
|
|
||||||
UseOfMFC="0"
|
|
||||||
ATLMinimizesCRunTimeLibraryUsage="FALSE"
|
|
||||||
CharacterSet="2">
|
|
||||||
<Tool
|
|
||||||
Name="VCCLCompilerTool"
|
|
||||||
AdditionalOptions="/O2"
|
|
||||||
Optimization="2"
|
|
||||||
InlineFunctionExpansion="1"
|
|
||||||
OptimizeForProcessor="3"
|
|
||||||
PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
|
|
||||||
StringPooling="TRUE"
|
|
||||||
RuntimeLibrary="0"
|
|
||||||
EnableFunctionLevelLinking="TRUE"
|
|
||||||
UsePrecompiledHeader="2"
|
|
||||||
PrecompiledHeaderFile=".\Release/libresample.pch"
|
|
||||||
AssemblerListingLocation=".\Release/"
|
|
||||||
ObjectFile=".\Release/"
|
|
||||||
ProgramDataBaseFileName=".\Release/"
|
|
||||||
WarningLevel="3"
|
|
||||||
SuppressStartupBanner="TRUE"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCCustomBuildTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCLibrarianTool"
|
|
||||||
OutputFile="libresample.lib"
|
|
||||||
SuppressStartupBanner="TRUE"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCMIDLTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCPostBuildEventTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCPreBuildEventTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCPreLinkEventTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCResourceCompilerTool"
|
|
||||||
PreprocessorDefinitions="NDEBUG"
|
|
||||||
Culture="1033"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCWebServiceProxyGeneratorTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCXMLDataGeneratorTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCManagedWrapperGeneratorTool"/>
|
|
||||||
<Tool
|
|
||||||
Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
|
|
||||||
</Configuration>
|
|
||||||
</Configurations>
|
|
||||||
<References>
|
|
||||||
</References>
|
|
||||||
<Files>
|
|
||||||
<Filter
|
|
||||||
Name="Source Files"
|
|
||||||
Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
|
|
||||||
<File
|
|
||||||
RelativePath="..\src\filterkit.c">
|
|
||||||
<FileConfiguration
|
|
||||||
Name="Debug|Win32">
|
|
||||||
<Tool
|
|
||||||
Name="VCCLCompilerTool"
|
|
||||||
Optimization="0"
|
|
||||||
PreprocessorDefinitions=""
|
|
||||||
BasicRuntimeChecks="3"/>
|
|
||||||
</FileConfiguration>
|
|
||||||
<FileConfiguration
|
|
||||||
Name="Release|Win32">
|
|
||||||
<Tool
|
|
||||||
Name="VCCLCompilerTool"
|
|
||||||
Optimization="2"
|
|
||||||
PreprocessorDefinitions=""/>
|
|
||||||
</FileConfiguration>
|
|
||||||
</File>
|
|
||||||
<File
|
|
||||||
RelativePath="..\src\resample.c">
|
|
||||||
<FileConfiguration
|
|
||||||
Name="Debug|Win32">
|
|
||||||
<Tool
|
|
||||||
Name="VCCLCompilerTool"
|
|
||||||
Optimization="0"
|
|
||||||
PreprocessorDefinitions=""
|
|
||||||
BasicRuntimeChecks="3"/>
|
|
||||||
</FileConfiguration>
|
|
||||||
<FileConfiguration
|
|
||||||
Name="Release|Win32">
|
|
||||||
<Tool
|
|
||||||
Name="VCCLCompilerTool"
|
|
||||||
Optimization="2"
|
|
||||||
PreprocessorDefinitions=""/>
|
|
||||||
</FileConfiguration>
|
|
||||||
</File>
|
|
||||||
<File
|
|
||||||
RelativePath="..\src\resamplesubs.c">
|
|
||||||
<FileConfiguration
|
|
||||||
Name="Debug|Win32">
|
|
||||||
<Tool
|
|
||||||
Name="VCCLCompilerTool"
|
|
||||||
Optimization="0"
|
|
||||||
PreprocessorDefinitions=""
|
|
||||||
BasicRuntimeChecks="3"/>
|
|
||||||
</FileConfiguration>
|
|
||||||
<FileConfiguration
|
|
||||||
Name="Release|Win32">
|
|
||||||
<Tool
|
|
||||||
Name="VCCLCompilerTool"
|
|
||||||
Optimization="2"
|
|
||||||
PreprocessorDefinitions=""/>
|
|
||||||
</FileConfiguration>
|
|
||||||
</File>
|
|
||||||
</Filter>
|
|
||||||
<Filter
|
|
||||||
Name="Header Files"
|
|
||||||
Filter="h;hpp;hxx;hm;inl">
|
|
||||||
<File
|
|
||||||
RelativePath="..\src\filterkit.h">
|
|
||||||
</File>
|
|
||||||
<File
|
|
||||||
RelativePath="..\include\libresample.h">
|
|
||||||
</File>
|
|
||||||
<File
|
|
||||||
RelativePath="..\src\resample_defs.h">
|
|
||||||
</File>
|
|
||||||
</Filter>
|
|
||||||
</Files>
|
|
||||||
<Globals>
|
|
||||||
</Globals>
|
|
||||||
</VisualStudioProject>
|
|
||||||
Loading…
Reference in new issue