meson: Enable echo-cancel module, add libwebrtc_util lib, add speex and webrtc dependencies

Signed-off-by: Arnaud Rebillout <arnaud.rebillout@collabora.com>

meson.build

@@ -279,11 +279,21 @@ if sbc_dep.found() and dbus_dep.found()
   cdata.set('HAVE_BLUEZ_5', 1)
 endif
 
+speex_dep = dependency('speexdsp', version : '>= 1.2', required : false)
+if speex_dep.found()
+  cdata.set('HAVE_SPEEX', 1)
+endif
+
 udev_dep = dependency('libudev', version : '>= 143', required : false)
 if udev_dep.found()
   cdata.set('HAVE_UDEV', 1)
 endif
 
+webrtc_dep = dependency('webrtc-audio-processing', version : '>= 0.2', required : false)
+if webrtc_dep.found()
+  cdata.set('HAVE_WEBRTC', 1)
+endif
+
 # Now generate config.h from everything above
 configure_file(output : 'config.h', configuration : cdata)
 

src/modules/echo-cancel/meson.build

@@ -0,0 +1,18 @@
+# The webrtc code is split off into a helper library to avoid having automake
+# link module-echo-cancel with C++ (which it does if there are any C++ deps,
+# even conditional ones).
+
+# Defining this library as shared fails, as it actually requires a symbol
+# from module-echo-cancel.c. Setting it to static solves that.
+
+libwebrtc_util_sources = [
+  'webrtc.cc'
+]
+
+libwebrtc_util = static_library('libwebrtc_util',
+  libwebrtc_util_sources,
+  cpp_args : [pa_c_args, server_c_args],
+  include_directories : [configinc, topinc],
+  dependencies : [libpulse_dep, libpulsecommon_dep, libpulsecore_dep, webrtc_dep],
+  install : true
+)

src/modules/meson.build

@@ -22,7 +22,6 @@ all_modules = [
   [ 'module-detect', 'module-detect.c' ],
   [ 'module-device-manager', 'module-device-manager.c', [], [], [], libprotocol_native ],
   [ 'module-device-restore', 'module-device-restore.c', [], [], [dbus_dep], libprotocol_native ],
-#  [ 'module-echo-cancel', 'module-echo-cancel.c' ],
   [ 'module-esound-compat-spawnfd', 'module-esound-compat-spawnfd.c' ],
   [ 'module-esound-compat-spawnpid', 'module-esound-compat-spawnpid.c' ],
 #  [ 'module-esound-protocol-tcp', 'module-protocol-stub.c' ],
@@ -197,6 +196,53 @@ if x11_dep.found()
   endif
 endif
 
+# Module echo-cancel is quite modular itself and requires a section of its own
+
+module_echo_cancel_sources = [
+  'echo-cancel/echo-cancel.h',
+  'echo-cancel/module-echo-cancel.c',
+  'echo-cancel/null.c',
+]
+module_echo_cancel_flags = []
+module_echo_cancel_deps = []
+module_echo_cancel_libs = []
+
+# FIXME: Adrian support should be optional
+module_echo_cancel_sources += [
+  'echo-cancel/adrian.c', 'echo-cancel/adrian.h',
+  'echo-cancel/adrian-aec.c', 'echo-cancel/adrian-aec.h',
+]
+module_echo_cancel_flags += ['-DHAVE_ADRIAN_EC=1']
+
+# FIXME: support ORC (depends on Adrian)
+#ORC_SOURCE += modules/echo-cancel/adrian-aec
+#module_echo_cancel_sources += [
+#  'echo-cancel/adrian-aec-orc-gen.c', 'echo-cancel/adrian-aec-orc-gen.h'
+#]
+#module_echo_cancel_deps += [orc_dep]
+
+if speex_dep.found()
+  module_echo_cancel_sources += ['echo-cancel/speex.c']
+  module_echo_cancel_deps += [speex_dep]
+endif
+
+if webrtc_dep.found()
+  subdir('echo-cancel')
+  module_echo_cancel_libs += [libwebrtc_util]
+endif
+
+all_modules += [
+  [ 'module-echo-cancel',
+    module_echo_cancel_sources,
+    [],
+    module_echo_cancel_flags,
+    module_echo_cancel_deps,
+    module_echo_cancel_libs,
+  ]
+]
+
+# Generate a shared module object for each modules
+
 foreach m : all_modules
   name = m[0]
   sources = m[1]

src/pulsecore/meson.build

@@ -126,6 +126,10 @@ if dbus_dep.found()
   ]
 endif
 
+if speex_dep.found()
+  libpulsecore_sources += ['resampler/speex.c']
+endif
+
 if x11_dep.found()
   libpulsecore_sources += ['x11wrap.c']
   libpulsecore_headers += ['x11wrap.h']
@@ -159,7 +163,7 @@ libpulsecore = shared_library('pulsecore-' + pa_version_major_minor,
   c_args : [pa_c_args, server_c_args],
   install : true,
   link_with : libpulsecore_simd_lib,
-  dependencies : [libm_dep, libpulsecommon_dep, libpulse_dep, ltdl_dep, shm_dep, sndfile_dep, database_dep, dbus_dep, x11_dep],
+  dependencies : [libm_dep, libpulsecommon_dep, libpulse_dep, ltdl_dep, shm_dep, sndfile_dep, database_dep, dbus_dep, speex_dep, x11_dep],
   implicit_include_directories : false)
 
 libpulsecore_dep = declare_dependency(link_with: libpulsecore)