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echo-cancel: Add the WebRTC echo canceller

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This adds the WebRTC echo canceller as another module-echo-cancel
backend. We're exposing both the full echo canceller as well as the
mobile echo control version as modargs.

Pending items:

1. The mobile canceller doesn't seem to work at the moment.

2. We still need to add bits to hook in drift compensation (to support
   sink and source from different devices).

The most controversial part of this patch would probably be the
mandatory build-time dependency on a C++ compiler. If the optional
--enable-webrtc-aec is set, then there's also a dependency on libstdc++.
This commit is contained in:
Arun Raghavan 2011-09-19 13:41:13 +05:30
parent dbe8f2e595
commit 6df6eb959e
5 changed files with 297 additions and 0 deletions
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19
configure.ac
View file

@ -78,6 +78,9 @@ AC_PROG_MKDIR_P
AC_PROG_CC
AC_PROG_CC_C99
AM_PROG_CC_C_O
# Only required if you want the WebRTC canceller -- no runtime dep on
# libstdc++ otherwise
AC_PROG_CXX
AC_PROG_GCC_TRADITIONAL
AC_USE_SYSTEM_EXTENSIONS
@ -1139,6 +1142,20 @@ if test "x$os_is_darwin" = "x1" ; then
fi
fi
AC_ARG_ENABLE([webrtc-aec],
AS_HELP_STRING([--enable-webrtc-aec], [Enable the optional WebRTC-based echo canceller]))
AS_IF([test "x$enable_webrtc_aec" != "xno"],
[PKG_CHECK_MODULES(WEBRTC, [ webrtc-audio-processing ], [HAVE_WEBRTC=1], [HAVE_WEBRTC=0])],
[HAVE_WEBRTC=0])
AS_IF([test "x$enable_webrtc_aec" = "xyes" && test "x$HAVE_WEBRTC" = "x0"],
[AC_MSG_ERROR([*** webrtc-audio-processing library not found])])
AC_SUBST(WEBRTC_CFLAGS)
AC_SUBST(WEBRTC_LIBS)
AM_CONDITIONAL([HAVE_WEBRTC], [test "x$HAVE_WEBRTC" = "x1"])
###################################
# Output #
@ -1275,6 +1292,7 @@ AS_IF([test "x$HAVE_IPV6" = "x1"], ENABLE_IPV6=yes, ENABLE_IPV6=no)
AS_IF([test "x$HAVE_OPENSSL" = "x1"], ENABLE_OPENSSL=yes, ENABLE_OPENSSL=no)
AS_IF([test "x$HAVE_FFTW" = "x1"], ENABLE_FFTW=yes, ENABLE_FFTW=no)
AS_IF([test "x$HAVE_ORC" = "xyes"], ENABLE_ORC=yes, ENABLE_ORC=no)
AS_IF([test "x$HAVE_WEBRTC" = "x1"], ENABLE_WEBRTC=yes, ENABLE_WEBRTC=no)
AS_IF([test "x$HAVE_TDB" = "x1"], ENABLE_TDB=yes, ENABLE_TDB=no)
AS_IF([test "x$HAVE_GDBM" = "x1"], ENABLE_GDBM=yes, ENABLE_GDBM=no)
AS_IF([test "x$HAVE_SIMPLEDB" = "x1"], ENABLE_SIMPLEDB=yes, ENABLE_SIMPLEDB=no)
@ -1321,6 +1339,7 @@ echo "
Enable OpenSSL (for Airtunes): ${ENABLE_OPENSSL}
Enable fftw: ${ENABLE_FFTW}
Enable orc: ${ENABLE_ORC}
Enable WebRTC echo canceller: ${ENABLE_WEBRTC}
Database
tdb: ${ENABLE_TDB}
gdbm: ${ENABLE_GDBM}