gpsnavi: Add AGL 4A playback support

To properly support 4A on AGL, pull in the binding, add some code
to open / close the "navigation" role, and use a simple gstreamer
pipeline to play the generated files.  The existing script templates
have had their playback commands removed, but are retained for
driving the voice file generation.

Signed-off-by: Scott Murray <scott.murray@konsulko.com>

diff --git a/agl/config.xml b/agl/config.xml
index 9d4c0ca..960f652 100755
--- a/agl/config.xml
+++ b/agl/config.xml
@@ -7,11 +7,13 @@
   <author>AISIN AW</author>
   <feature name="urn:AGL:widget:required-permission">
     <param name="urn:AGL:permission::public:no-htdocs" value="required" />
+    <param name="urn:AGL:permission:audio:public:audiostream" value="required" />
     <param name="http://tizen.org/privilege/internal/dbus" value="required" />
   </feature>
   <feature name="urn:AGL:widget:required-api">
     <param name="homescreen" value="ws" />
     <param name="windowmanager" value="ws" />
+    <param name="ahl-4a" value="ws" />
   </feature>
   <license>GPL</license>
   <feature name="urn:AGL:widget:file-properties">
diff --git a/configure.ac b/configure.ac
index 33348c3..6b7b391 100755
--- a/configure.ac
+++ b/configure.ac
@@ -26,11 +26,13 @@ PKG_CHECK_MODULES([GLIB], [glib-2.0 gthread-2.0])
 PKG_CHECK_MODULES([FREETYPE2], [freetype2])
 PKG_CHECK_MODULES([WAYLAND], [wayland-client wayland-egl egl])
 PKG_CHECK_MODULES([GL], [glesv2])
+PKG_CHECK_MODULES([GSTREAMER], [gstreamer-1.0])
 PKG_CHECK_MODULES([ZLIB], [zlib])
 PKG_CHECK_MODULES([SQLITE3], [sqlite3])
 PKG_CHECK_MODULES([EXPAT], [expat])
 PKG_CHECK_MODULES([OPENSSL], [openssl])
 PKG_CHECK_MODULES([DBUSCXX], [dbus-c++-1])
+PKG_CHECK_MODULES([LIBAFBWSC], [libafbwsc])
 PKG_CHECK_MODULES([WINDOWMANAGER], [libwindowmanager])
 PKG_CHECK_MODULES([HOMESCREEN], [libhomescreen])
 
diff --git a/flite_agl.in b/flite_agl.in
index 28b512c..d11b043 100644
--- a/flite_agl.in
+++ b/flite_agl.in
@@ -1,6 +1,3 @@
 #!/bin/sh
 TMP=/tmp/navi.wav
 echo "$1" | flite_hts_engine -m  @datadir@/Voice/us/cmu_us_arctic_slt.htsvoice -o $TMP
-paplay --property='media.role=Navi' $TMP
-rm -f $TMP
-
diff --git a/jtalk_agl.in b/jtalk_agl.in
index 76900f4..857c824 100644
--- a/jtalk_agl.in
+++ b/jtalk_agl.in
@@ -1,6 +1,3 @@
 #!/bin/sh
 TMP=/tmp/navi.wav
 echo "$1" | open_jtalk -ow $TMP -m @exec_prefix@/share/Voice/mei/mei_normal.htsvoice -x @exec_prefix@/share/dic/
-paplay --property='media.role=Navi' $TMP
-rm -f $TMP
-
diff --git a/src/Makefile.am b/src/Makefile.am
index affb9a5..6d0fa55 100755
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -26,6 +26,7 @@ sms/sms-core/SMCoreDM/RG/RG_GuideNear.c \
 sms/sms-core/SMCoreDM/RG/RG_ShareData.c \
 sms/sms-core/SMCoreDM/RG/RG_GuideVoiceBuild_en.c \
 sms/sms-core/SMCoreDM/RG/RG_GuideVoice.c \
+sms/sms-core/SMCoreDM/RG/RG_GuideVoice4A.cpp \
 sms/sms-core/SMCoreDM/RG/RG_GuideApi.c \
 sms/sms-core/SMCoreDM/SCRTThread.c \
 sms/sms-core/SMCoreDAL/SMDALAreaCls.c \
@@ -537,6 +538,8 @@ libnavicore_la_CFLAGS = -fPIC \
         @FREETYPE2_CFLAGS@ \
         @WAYLAND_CFLAGS@ \
         @GL_CFLAGS@ \
+        @GSTREAMER_CFLAGS@ \
+        @LIBAFBWSC_CFLAGS@ \
         @ZLIB_CFLAGS@ \
         @SQLITE3_CFLAGS@ \
         @EXPAT_CFLAGS@ \
@@ -547,6 +550,8 @@ libnavicore_la_CXXFLAGS = -fPIC \
         @FREETYPE2_CFLAGS@ \
         @WAYLAND_CFLAGS@ \
         @GL_CFLAGS@ \
+        @GSTREAMER_CFLAGS@ \
+        @LIBAFBWSC_CFLAGS@ \
         @ZLIB_CFLAGS@ \
         @SQLITE3_CFLAGS@ \
         @EXPAT_CFLAGS@ \
@@ -555,6 +560,8 @@ libnavicore_la_CXXFLAGS = -fPIC \
 libnavicore_la_LIBADD = \
         @OPENSSL_LIBS@ \
         @GL_LIBS@ \
+        @GSTREAMER_LIBS@ \
+        @LIBAFBWSC_LIBS@ \
         @ZLIB_LIBS@ \
         @SQLITE3_LIBS@ \
         @EXPAT_LIBS@
diff --git a/src/sms/sms-core/SMCoreDM/RG/RG_GuideVoice.c b/src/sms/sms-core/SMCoreDM/RG/RG_GuideVoice.c
index 3828d5c..36e6775 100755
--- a/src/sms/sms-core/SMCoreDM/RG/RG_GuideVoice.c
+++ b/src/sms/sms-core/SMCoreDM/RG/RG_GuideVoice.c
@@ -16,6 +16,8 @@
 
 #include "sms-core/SMCoreDM/SMCoreDMInternal.h"
 
+extern int play_voice(const char* voice_gen_cmd);
+
 typedef struct _tts_text_tbl 
 {
 	INT32	code;
@@ -205,9 +207,9 @@ E_SC_RESULT RG_CTL_CreateVoiceText(RT_NAME_t *in, INT32 language)
 	}
 	else
 	{
-		strncat(tts_voice, "\" & ", (TTSMAX - len - 1));
+		strncat(tts_voice, "\"", (TTSMAX - len - 1));
 		
-		system(tts_voice);
+		play_voice(tts_voice);
 	}
 	
 	return (e_SC_RESULT_SUCCESS);
diff --git a/src/sms/sms-core/SMCoreDM/RG/RG_GuideVoice4A.cpp b/src/sms/sms-core/SMCoreDM/RG/RG_GuideVoice4A.cpp
new file mode 100644
index 0000000..6b59c0e
--- /dev/null
+++ b/src/sms/sms-core/SMCoreDM/RG/RG_GuideVoice4A.cpp
@@ -0,0 +1,223 @@
+/*
+ * Copyright (C) 2018 Konsulko Group
+ * Author: Scott Murray <scott.murray@konsulko.com>
+ *
+ * This program is licensed under GPL version 2 license.
+ * See the LICENSE file distributed with this source file.
+ */
+
+#include <string>
+#include <iostream>
+#include <cstring>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <pthread.h>
+#include <gst/gst.h>
+#include <json-c/json.h>
+
+extern "C"
+{
+#include <afb/afb-wsj1.h>
+#include <afb/afb-ws-client.h>
+#include <systemd/sd-event.h>
+}
+
+#define NAVI_TMPFILE	"/tmp/navi.wav"
+
+static struct afb_wsj1* ws;
+static struct afb_wsj1_itf itf;
+sd_event* loop;
+
+// port and token from src/glview/glview_wayland.cpp
+extern long g_port;
+extern std::string g_token;
+
+static int set_role_state(bool state);
+
+void play_voice_file(const char *output)
+{
+	if(!output)
+		return;
+
+        // Initialize GStreamer
+        gst_init(NULL, NULL);
+
+	std::string pipeline_str = "filesrc location=";
+	pipeline_str += NAVI_TMPFILE;
+	pipeline_str += " ! wavparse ! audioconvert ! audioresample ! alsasink device=";
+	pipeline_str += output;
+	GstElement *pipeline = gst_parse_launch(pipeline_str.c_str(), NULL);
+	if(!pipeline) {
+		std::cerr << "gstreamer pipeline construction failed!" << std::endl;
+		return;
+	}
+
+	// Start pipeline
+	gst_element_set_state(pipeline, GST_STATE_PLAYING);
+	std::cerr << "Playing guidance" << std::endl;
+
+	// Wait until error or EOS
+	GstBus *bus = gst_element_get_bus(pipeline);
+	GstMessage *msg = gst_bus_timed_pop_filtered(bus,
+						     GST_CLOCK_TIME_NONE,
+						     (GstMessageType) (GST_MESSAGE_ERROR | GST_MESSAGE_EOS));
+
+	// Free resources
+	if(msg != NULL)
+		gst_message_unref(msg);
+	gst_object_unref(bus);
+	gst_element_set_state(pipeline, GST_STATE_NULL);
+	gst_object_unref(pipeline);
+
+	// Remove temporary file
+	unlink(NAVI_TMPFILE);
+
+	return;
+}
+
+static void on_hangup(void *closure, struct afb_wsj1 *wsj)
+{
+}
+
+static void on_call(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg)
+{
+}
+
+static void on_event(void* closure, const char* event, struct afb_wsj1_msg *msg)
+{
+}
+
+static void on_reply(void *closure, struct afb_wsj1_msg *msg)
+{
+	bool state = (bool) closure;
+
+	if(!state) {
+		// Role is closed, return
+		return;
+	}
+
+	// We opened the role, play the file
+	struct json_object* reply = afb_wsj1_msg_object_j(msg);
+	if(reply) {
+		struct json_object* response;
+		int rc = json_object_object_get_ex(reply, "response", &response);
+		if(rc) {
+			struct json_object* val;
+			rc = json_object_object_get_ex(response, "device_uri", &val);
+			if (rc && json_object_get_string_len(val)) {
+				const char* jres_pcm = json_object_get_string(val);
+				play_voice_file(jres_pcm);
+			}
+		}
+	}
+
+	// Give up role now that we're done
+	set_role_state(false);
+}
+
+static void *event_loop_run(void *args)
+{
+	struct sd_event* loop = (struct sd_event*)(args);
+
+	for(;;)
+		sd_event_run(loop, 30000000);
+}
+
+static int start_event_loop(void)
+{
+	if(ws && loop) {
+		pthread_t thread_id;
+		if(pthread_create(&thread_id, NULL, event_loop_run, loop) != 0) {
+			return -1;
+		} else {
+			return thread_id;
+		}
+        } else {
+		return -1;
+	}
+}
+
+static int init_ws(int port, std::string &token)
+{
+	loop = NULL;
+	std::string uri;
+
+	if(sd_event_default(&loop) < 0) {
+		std::cerr << __FUNCTION__ << ": Failed to create event loop" << std::endl;
+		goto error;
+	}
+
+	// Initialize interface for websocket
+	itf.on_hangup = on_hangup;
+	itf.on_call = on_call;
+	itf.on_event = on_event;
+
+	uri = "ws://localhost:" + std::to_string(port) + "/api?token=" + token;
+	std::cerr << "Using URI: " << uri << std::endl;
+	ws = afb_ws_client_connect_wsj1(loop, uri.c_str(), &itf, NULL);
+	if(ws == NULL) {
+		std::cerr << __FUNCTION__ << ": Failed to create websocket connection" << std::endl;
+		goto error;
+	}
+	start_event_loop();
+	return 0;
+error:
+	if(loop) {
+		sd_event_unref(loop);
+	}
+	return -1;
+}
+
+static int set_role_state(bool state)
+{
+	int rc;
+	json_object *jsonData = json_object_new_object();
+
+	json_object_object_add(jsonData, "action", json_object_new_string(state ? "open" : "close"));
+	rc = afb_wsj1_call_j(ws, "ahl-4a", "navigation", jsonData, on_reply, (void*) state);
+	if (rc < 0) {
+		std::cerr << __FUNCTION__ <<  ": Failed to call ahl-4a/navigation!" << std::endl;
+	}
+	return rc;
+}
+
+pthread_mutex_t ws_mutex = PTHREAD_MUTEX_INITIALIZER;
+
+static void *play_voice_handler(void *data)
+{
+	int rc;
+	char *voice_gen_cmd = (char*) data;
+	if(!voice_gen_cmd)
+		return NULL;
+
+	pthread_mutex_lock(&ws_mutex);
+	if(!ws) {
+		rc = init_ws(g_port, g_token);
+		pthread_mutex_unlock(&ws_mutex);
+		if(rc < 0)
+			return NULL;
+	}
+	pthread_mutex_unlock(&ws_mutex);
+
+	// Generate guidance voice file
+	rc = system(voice_gen_cmd);
+	free(voice_gen_cmd);
+
+	// Try to get role and play file
+	set_role_state(true);
+
+	return NULL;
+}
+
+extern "C" int play_voice(const char* voice_gen_cmd)
+{
+	pthread_t handler_thread;
+	char *tmp;
+
+	if(!voice_gen_cmd)
+		return -1;
+
+	tmp = strdup(voice_gen_cmd);
+	return pthread_create(&handler_thread, NULL, play_voice_handler, (void*) tmp);
+}