default rdpsnd audin off, can enable with --enable-rdpsndaudin

configure.ac

@@ -150,6 +150,11 @@ AC_ARG_ENABLE(rfxcodec, AS_HELP_STRING([--disable-rfxcodec],
               [], [enable_rfxcodec=yes])
 AM_CONDITIONAL(XRDP_RFXCODEC, [test x$enable_rfxcodec = xyes])
 
+AC_ARG_ENABLE(rdpsndaudin, AS_HELP_STRING([--enable-rdpsndaudin],
+              [Use rdpsnd audio in (default: no)]),
+              [], [enable_rdpsndaudin=no])
+AM_CONDITIONAL(XRDP_RDPSNDAUDIN, [test x$enable_rdpsndaudin = xyes])
+
 # Don't fail without working nasm if rfxcodec is not enabled
 if test "x$enable_rfxcodec" != xyes; then
   with_simd=no
@@ -390,6 +395,7 @@ echo "  vsock           $enable_vsock"
 echo "  pam             $enable_pam"
 echo "  kerberos        $enable_kerberos"
 echo "  debug           $enable_xrdpdebug"
+echo "  rdpsndaudin     $enable_rdpsndaudin"
 echo ""
 echo "  strict_locations        $enable_strict_locations"
 echo "  prefix                  $prefix"

sesman/chansrv/Makefile.am

@@ -37,6 +37,10 @@ AM_CPPFLAGS += -DXRDP_MP3LAME
 CHANSRV_EXTRA_LIBS += -lmp3lame
 endif
 
+if XRDP_RDPSNDAUDIN
+AM_CPPFLAGS += -DXRDP_RDPSNDAUDIN
+endif
+
 AM_CFLAGS = $(X_CFLAGS)
 
 sbin_PROGRAMS = \

sesman/chansrv/sound.c

@@ -1438,6 +1438,7 @@ sound_check_wait_objs(void)
 static int
 sound_send_server_input_formats(void)
 {
+#if defined(XRDP_RDPSNDAUDIN)
     struct stream *s;
     int bytes;
     int index;
@@ -1492,6 +1493,10 @@ sound_send_server_input_formats(void)
     bytes = (int)(s->end - s->data);
     send_channel_data(g_rdpsnd_chan_id, s->data, bytes);
     free_stream(s);
+#else
+    /* avoid warning */
+    (void)g_wave_inp_formats;
+#endif
     return 0;
 }