This adds Andre Adrian's AEC implementation from his intercom project
(http://andreadrian.de/intercom/) as an alternative to the speex echo
cancellation routines. Since the implementation was in C++ and not in
the form of a library, I have converted the code to C and made a local
copy of the implementation.
The implementation actually works on floating point data, so we can
tweak it to work with both integer and floating point samples (currently
we just use S16LE).
Make a new echo-cancel module that exposes a new sink and source. All data sent
to the sink is matched against the data captured from the source and
echo-canceled using the speex echo canceler.
This is needed to better support out of tree builds (including
distcheck) and to ensure the necessary folders are created in the
build tree on configure and also works around an intl-tools bug
(https://bugs.launchpad.net/intltool/+bug/605826)
The Makefile.am's used are minimal (and in some cases completely
blank). At present they do not include anything interesting
with the majority of the real work still done by the monolitic
src/Makefile.am
It may make sense to start splitting out src/Makefile.am into
smaller chunks but this commit makes the minimum changes to address
the issues that result from using make distcheck and other out of
tree builds.
Note: This 'breaks' the ability to type make in e.g. the src/modules
folder and have all of PA rebuilt accordingly (this is because the
static Makefiles previously present just did a "make -C ..") which
was purportedly for use in emacs. But I'm sure there will be a better
and more robust way to configure emacs to do your builds properly if
this behaviour is still desirable.
This patch serves two purposes:
1) Allows something other than the de-facto standard udev rules dir or
/lib/udev/rules.d to be used (the udev build system allows you to
customise this)
2) Allows a prefixed, non-root install (right now, the /lib/... path
is hard-coded into the build system
Commits e8cb96c and 0c836aa created mixer paths but did not update
src/Makefile.am. Building a snapshot containing these two commits
therefore results in the user being unable to adjust the volume or
(un)mute through PA. Fix this by adding the two new mixer paths
files to src/Makefile.am.
Likewise, commit 66e1a2d created a profile for the M-Audio FastTrack
Pro USB but did not update src/Makefile.am. Fix this by adding the
profile to src/Makefile.am.
This will be used as the basis for a queryable system for past and present devices, initially for use in KDE.
Currently all this module does is save lists of sinks/sources and their descriptions, so it needs to
gain a protocol extension to make this queryable.
As things stand it will save the device descriptions of all sinks and restore them if they differ from whats on record.
Provides getgrgid, getgrnam, getpwuid & getpwnam replacements that are
thread safe (a la getgrgid_r() and friends) that internally
handle allocating big-enough buffers to avoid ERANGE errors
on large users or groups.
Move the volume code into a separate file with the reference C implementations.
Add a function to retrieve the volume function and one to install a new one.
This adds module-hal-detect-compat.c which when enabled will be compiled
into a module module-hal-detect which simply loads module-udev-detect.
The purpose of this is to allow easy upgrading without breaking
default.pa. Distributions are recommended to enable this to easy
upgrades from HAL versions of PA to udev versions.
Since Fedora does not enable OSS output support at all, but still uses
padsp, and in Gentoo we could also make use of padsp without OSS output
support, split the two things in two parameters, although they both check
for sys/soundcard.h once.
On non-GNU, non-Sun linkers, the -z option is often not understood; make
sure that the -z nodelete option is usable before making use of it.
Unbreaks build on Mac OS X.
Instead of trying to re-execute pulseaudio itself with LD_BIND_NOW set,
just find the correct flag for the linker to request immediate bindings
(all ELF files support that option), and use that when linking the daemon.
Reduce the amount of compiled and executed code as well.
Without this change, undefined symbols will be found in the module and the
link will be rejected (thanks to the just-made change to reject outstanding
undefined symbols).
Also, in -test1, without this change it would have caused the module to not
load because of missing symbols.
