Use flite to announce flight state

[fw/altos] / aoview / aoview_voice.c

diff --git a/aoview/aoview_voice.c b/aoview/aoview_voice.c
new file mode 100644 (file)
index 0000000..7f4e576
--- /dev/null
+++ b/aoview/aoview_voice.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright © 2009 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "aoview.h"
+
+#if HAVE_FLITE
+#include <stdarg.h>
+
+FILE   *aoview_flite;
+
+void aoview_voice_open(void)
+{
+       if (!aoview_flite)
+               aoview_flite = popen("aoview_flite", "w");
+}
+
+void aoview_voice_close(void)
+{
+       if (aoview_flite) {
+               pclose(aoview_flite);
+               aoview_flite = NULL;
+       }
+}
+
+void aoview_voice_speak(char *format, ...)
+{
+       va_list ap;
+
+       if (aoview_flite) {
+               va_start(ap, format);
+               vfprintf(aoview_flite, format, ap);
+               fflush(aoview_flite);
+               va_end(ap);
+       }
+}
+
+#else
+void aoview_voice_open(void)
+{
+}
+
+void aoview_voice_close(void)
+{
+}
+
+void aoview_voice_speak(char *format, ...)
+{
+}
+#endif
+
+
+static GtkCheckMenuItem        *voice_enable;
+
+static void
+aoview_voice_enable(GtkWidget *widget, gpointer data)
+{
+       if (gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) {
+               aoview_voice_open();
+               aoview_voice_speak("enable voice system\n");
+       } else {
+               aoview_voice_speak("disable voice system\n");
+               aoview_voice_close();
+       }
+}
+
+void
+aoview_voice_init(GladeXML *xml)
+{
+       aoview_voice_open();
+
+       voice_enable = GTK_CHECK_MENU_ITEM(glade_xml_get_widget(xml, "voice_enable"));
+       assert(voice_enable);
+
+       g_signal_connect(G_OBJECT(voice_enable), "toggled",
+                        G_CALLBACK(aoview_voice_enable),
+                        voice_enable);
+}