sd_piper: add module for piper speech synthesis

config/modules/piper.conf

@@ -0,0 +1,29 @@
+# Debug 1
+
+# Location of the piper binary
+PiperBinPath "/usr/lib/piper/piper"
+
+# Location of voice model files
+PiperModelsPath "/usr/share/piper-voices"
+
+# The amount of voice data (ms) to buffer from piper before returning it to
+# speech-dispatcher for playback
+#   default 200
+PiperAudioBufferMsec 200
+
+# For the following parameters, value/100 is passed to piper cmdline
+
+# seconds of silence after each sentence
+#   default 20 -> 0.20 sec
+PiperSentenceSilence 20
+
+# generator noise
+#   default 67 -> 0.67
+PiperNoiseScale 67
+
+# phoneme width noise
+#   default 80 -> 0.80
+PiperNoiseWidth 80
+
+# Voice definitions. The name must be the filename within ${PiperModelsPath}/
+AddVoice "en-gb" "female1" "en_GB-alba-medium.onnx"

config/speechd.conf

@@ -288,6 +288,7 @@ SymbolsPreprocFile "symbols-fallback.dic"
 #AddModule "baratinoo"                "sd_baratinoo" "baratinoo.conf"
 #AddModule "rhvoice"                  "sd_rhvoice"   "rhvoice.conf"
 #AddModule "voxin"                    "sd_voxin"     "voxin.conf"
+#AddModule "piper"                    "sd_piper"     "piper.conf"
 
 # The output module testing doesn't actually connect to anything. It
 # outputs the requested commands to standard output and reads

configure.ac

@@ -201,7 +201,7 @@ AS_IF([test $enable_python != "no"],
 			[AC_MSG_FAILURE([python 3 or greater is not available])])])])
 AM_CONDITIONAL([HAVE_PYTHON], [test $enable_python = "yes"])
 
-output_modules="cicero dummy festival openjtalk generic"
+output_modules="cicero dummy festival openjtalk generic piper"
 # checks for output modules
 # check for espeak support
 AC_ARG_WITH([espeak],

src/modules/.gitignore

@@ -36,6 +36,7 @@
 /sd_kali
 /sd_openjtalk
 /sd_pico
+/sd_piper
 /sd_skeleton0
 /sd_skeleton0_espeak-ng-async
 /sd_skeleton0_espeak-ng-async-server

src/modules/Makefile.am

@@ -323,6 +323,17 @@ sd_openjtalk_LDADD = $(top_builddir)/src/common/libcommon.la \
 sd_openjtalk_CPPFLAGS = $(AM_CPPFLAGS) \
 	$(DOTCONF_CFLAGS)
 
+#
+# piper module
+#
+modulebin_PROGRAMS += sd_piper
+sd_piper_SOURCES = piper.c $(common_SOURCES) \
+	module_utils_addvoice.c
+sd_piper_LDADD = $(top_builddir)/src/common/libcommon.la \
+	$(common_LDADD)
+sd_piper_CPPFLAGS = $(AM_CPPFLAGS) \
+	$(DOTCONF_CFLAGS)
+
 #
 # Dummy module speech message
 #