freeswitch/libs/spandsp
Andrey Volk e08406d1c4 FS-11288: [Build-System] Refactor WIX project to not miss modules in msi on slow machines. Move Windows build logic from legacy util.vbs to modern props. Fix sound packages improper extraction. Fix multiprocessor build under msbuild. 2018-07-27 18:56:46 +03:00
..
config add to make sure config dir is there for AC_CONFIG_AUX_DIR 2012-07-02 17:46:21 -04:00
debian update to snapshot spandsp-20090421 2009-04-20 18:33:33 +00:00
doc Improvements to image translation 2012-08-14 22:32:30 +08:00
m4 spandsp DSP tweaks to avoid problems with the LPC10 code compiled with the latest GCC 6.2 series compilers. Various other additional tweaks to spandsp. 2017-07-14 00:29:20 +01:00
spandsp The band filter for G.722 could cause numerical overflow in unusual circumstances with the maximum possiblke signal level. The filter output is now saturated to 16 bits to avoid this. 2016-08-31 23:59:32 +08:00
spandsp-sim Various little cleanups in spandsp 2015-06-18 21:15:41 +08:00
src FS-11288: [Build-System] Refactor WIX project to not miss modules in msi on slow machines. Move Windows build logic from legacy util.vbs to modern props. Fix sound packages improper extraction. Fix multiprocessor build under msbuild. 2018-07-27 18:56:46 +03:00
test-data Various little cleanups in spandsp 2015-06-18 21:15:41 +08:00
tests Tweaks and feature additions to some of the spandsp tests. 2018-01-22 15:19:38 +00:00
.gitignore libs/spandsp/.gitignore: added temporary files in test-data 2015-09-09 21:39:18 +00:00
.update bump 2014-07-22 07:26:04 -05:00
AUTHORS inital checkin of spandsp from http://www.soft-switch.org/downloads/snapshots/spandsp/spandsp-20080829.tar.gz 2008-09-03 19:02:00 +00:00
COPYING inital checkin of spandsp from http://www.soft-switch.org/downloads/snapshots/spandsp/spandsp-20080829.tar.gz 2008-09-03 19:02:00 +00:00
ChangeLog inital checkin of spandsp from http://www.soft-switch.org/downloads/snapshots/spandsp/spandsp-20080829.tar.gz 2008-09-03 19:02:00 +00:00
DueDiligence inital checkin of spandsp from http://www.soft-switch.org/downloads/snapshots/spandsp/spandsp-20080829.tar.gz 2008-09-03 19:02:00 +00:00
Makefile.am Tweaks to spandsp configuration 2013-09-01 00:36:48 +08:00
NEWS inital checkin of spandsp from http://www.soft-switch.org/downloads/snapshots/spandsp/spandsp-20080829.tar.gz 2008-09-03 19:02:00 +00:00
README Allow writing of T.85 format TIFF files 2013-04-13 01:46:14 +08:00
README.testdata inital checkin of spandsp from http://www.soft-switch.org/downloads/snapshots/spandsp/spandsp-20080829.tar.gz 2008-09-03 19:02:00 +00:00
autogen.sh Fixed V.22bis fixed point builds 2012-08-05 18:39:41 +08:00
configure.ac FS-10875: #resolve Portability issues for non-bash interpreters. 2018-01-09 13:31:32 -04:00
configure.gnu FS-10074: [libtiff] stop using embedded libtiff. Build now requires system libtiff 2017-03-14 18:29:37 -05:00
spandsp.pc.in Various little tweaks to spandsp to stop warnings with newer compilers 2012-07-02 21:31:04 +08:00
spandsp.spec Tweaks to spandsp configuration 2013-09-01 00:36:48 +08:00
spandsp.spec.in Various little tweaks to spandsp to stop warnings with newer compilers 2012-07-02 21:31:04 +08:00
unpack_g722_data.sh Moved spandsp to a more recent version. A huge number of little changes occur here, as recently spandsp 2010-07-25 03:29:44 +08:00
unpack_g726_data.sh Moved spandsp to a more recent version. A huge number of little changes occur here, as recently spandsp 2010-07-25 03:29:44 +08:00
unpack_gsm0610_data.sh FS-10875: #resolve Portability issues for non-bash interpreters. 2018-01-09 13:31:32 -04:00
unpack_v56ter_data.sh Moved spandsp to a more recent version. A huge number of little changes occur here, as recently spandsp 2010-07-25 03:29:44 +08:00
wrapper.xsl Numerous little changes to spandsp that haven't been pushed to Freeswitch for a 2011-07-02 14:45:27 +08:00
yum-prepare.sh Various small cleanups in spandsp 2014-05-07 13:11:53 +08:00

README

spandsp 0.0.6 - A DSP library for telephony
-------------------------------------------

SpanDSP is a library of DSP functions for telephony, in the 8000 sample per
second world of E1s, T1s, and higher order PCM channels. It contains low level
functions, such as basic filters. It also contains higher level functions, such
as cadenced supervisory tone detection, and a complete software FAX machine.
The software has been designed to avoid intellectual property issues, using
mature techniques where all relevant patents have expired. See the file
DueDiligence for important information about these intellectual property issues.

The library is licenced under the LGPL 2.1 licence. The test suite, and some support
programs are licenced under the GPL 2 licence. The full text of these licences can
be found in the file COPYING.

Dependencies
------------

spandsp depends on various other packages for various tasks. Most of these
dependencies relate to building the test suite.

libtiff (and libtiff-devel on most Linux distributions) is required to
build the spandsp library.

libaudiofile (and libaudiofile-devel) is required to build the test suite
fftw (and fftw-devel) is required to build the test suite. Version 2 or 3 of
FFTW may be used. Spandsp adapts to the differences between them.

fltk (and fltk-devel), Fl_Cartesian and Fl_Audio_Meter are required to build
the test suite with GUI interfaces for some of the tests. The tests will build
without these packages, but the GUI features will not be available.
Fl_Cartesian and Fl_Audio_Meter can be downloaded from
http://www.soft-switch.org/downloads.

Steve Underwood <steveu@coppice.org>