freeswitch

History

Steve Underwood fc7a74905b Various little memory leak possibilities in spandsp sorts, and the spandsp test suite is now mostly OK with valgrind.		2014-06-14 19:49:05 +08:00
..
config	add to make sure config dir is there for AC_CONFIG_AUX_DIR	2012-07-02 17:46:21 -04:00
debian
doc	Improvements to image translation	2012-08-14 22:32:30 +08:00
m4	Fixed poor checking for ARM NEON	2014-01-17 23:16:23 +08:00
spandsp	Improved FAX disconnect handling	2014-06-11 10:52:54 +08:00
spandsp-sim	Various little memory leak possibilities in spandsp sorts, and the spandsp	2014-06-14 19:49:05 +08:00
src	Various little memory leak possibilities in spandsp sorts, and the spandsp	2014-06-14 19:49:05 +08:00
test-data	Reworked some of the definition names and values in preparation for	2013-07-24 11:58:36 +08:00
tests	Various little memory leak possibilities in spandsp sorts, and the spandsp	2014-06-14 19:49:05 +08:00
.gitignore	.gitignore	2014-01-29 17:56:51 -05:00
.update	force spandsp rebuild	2014-06-05 22:07:08 +05:00
AUTHORS
autogen.sh	Fixed V.22bis fixed point builds	2012-08-05 18:39:41 +08:00
ChangeLog
configure.ac	Various small cleanups in spandsp	2014-05-07 13:11:53 +08:00
configure.gnu
COPYING
DueDiligence
Makefile.am	Tweaks to spandsp configuration	2013-09-01 00:36:48 +08:00
NEWS
README	Allow writing of T.85 format TIFF files	2013-04-13 01:46:14 +08:00
README.testdata
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
unpack_g726_data.sh
unpack_gsm0610_data.sh	Various small cleanups in spandsp	2014-05-07 13:11:53 +08:00
unpack_v56ter_data.sh
wrapper.xsl
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>