Remove voice-control-elm dependency

Some devices don't support voice-control-elm library.
The launchpad-loader calls dlopen() to use voice-control-elm APIs.

Change-Id: I082f56a67bce519d6a1c15cb0a446683293d46e9
Signed-off-by: Hwankyu Jhun <h.jhun@samsung.com>

3 files changed, 72 insertions, 9 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1fbed8a..709a6e9 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -33,7 +33,6 @@ PKG_CHECK_MODULES(${this_target_loader} REQUIRED
 	vconf
 	buxton2
 	libsystemd
-	voice-control-elm
 	gio-2.0
 	)
 
diff --git a/packaging/launchpad.spec b/packaging/launchpad.spec
index 9c591c8..85bf389 100644
--- a/packaging/launchpad.spec
+++ b/packaging/launchpad.spec
@@ -24,7 +24,6 @@ BuildRequires:  pkgconfig(ttrace)
 BuildRequires:  pkgconfig(libtzplatform-config)
 BuildRequires:  pkgconfig(libcap)
 BuildRequires:  pkgconfig(tanchor)
-BuildRequires:  pkgconfig(voice-control-elm)
 
 Requires(post): /sbin/ldconfig
 Requires(post): /usr/bin/systemctl
diff --git a/src/launchpad_loader.c b/src/launchpad_loader.c
index 8e75181..0bc44c9 100644
--- a/src/launchpad_loader.c
+++ b/src/launchpad_loader.c
@@ -26,8 +26,6 @@
 #include <Elementary.h>
 #include <bundle_internal.h>
 #include <vconf.h>
-#include <voice_control_elm.h>
-#include <voice_control_elm_private.h>
 
 #include "launchpad_common.h"
 #include "launchpad.h"
@@ -38,6 +36,8 @@
 #define LOADER_TYPE_HW		"hw-loader"
 #define LOADER_TYPE_SW		"sw-loader"
 
+#define PATH_LIB_VC_ELM "/usr/lib/libvc-elm.so.0"
+
 extern bundle *launchpad_loader_get_bundle(void);
 
 static Ecore_Fd_Handler *__fd_handler;
@@ -50,7 +50,13 @@ static Evas_Object *__win;
 static Evas_Object *__bg;
 static Evas_Object *__conform;
 static int __type;
+
 static bool __vc_elm_initialized;
+static void *__vc_elm_handle;
+static int (*__vc_elm_initialize)(void);
+static int (*__vc_elm_deinitialize)(void);
+static int (*__vc_elm_set_auto_register_mode)(int, int);
+
 
 enum loader_type {
 	TYPE_COMMON,
@@ -144,6 +150,60 @@ static void __fini_window(void)
 	}
 }
 
+static void __unload_vc_elm(void)
+{
+	if (!__vc_elm_handle)
+		return;
+
+	__vc_elm_initialize = NULL;
+	__vc_elm_deinitialize = NULL;
+	__vc_elm_set_auto_register_mode = NULL;
+
+	dlclose(__vc_elm_handle);
+	__vc_elm_handle = NULL;
+}
+
+static int __load_vc_elm(void)
+{
+	if (__vc_elm_handle)
+		return 0;
+
+	if (access(PATH_LIB_VC_ELM, F_OK) != 0) {
+		_W("Failed to access %s", PATH_LIB_VC_ELM);
+		return -1;
+	}
+
+	__vc_elm_handle = dlopen(PATH_LIB_VC_ELM, RTLD_LAZY | RTLD_GLOBAL);
+	if (!__vc_elm_handle) {
+		_E("Failed to open %s", PATH_LIB_VC_ELM);
+		return -1;
+	}
+
+	__vc_elm_initialize = dlsym(__vc_elm_handle, "vc_elm_initialize");
+	if (!__vc_elm_initialize) {
+		_E("Failed to load vc_elm_initialize");
+		__unload_vc_elm();
+		return -1;
+	}
+
+	__vc_elm_deinitialize = dlsym(__vc_elm_handle, "vc_elm_deinitialize");
+	if (!__vc_elm_deinitialize) {
+		_E("Failed to load vc_elm_deinitialize");
+		__unload_vc_elm();
+		return -1;
+	}
+
+	__vc_elm_set_auto_register_mode = dlsym(__vc_elm_handle,
+			"vc_elm_set_auto_register_mode");
+	if (!__vc_elm_set_auto_register_mode) {
+		_E("Failed to load vc_elm_set_auto_register_mode");
+		__unload_vc_elm();
+		return -1;
+	}
+
+	return 0;
+}
+
 static void __vc_vtauto_changed_cb(keynode_t *key, void *data)
 {
 	const char *name;
@@ -156,12 +216,12 @@ static void __vc_vtauto_changed_cb(keynode_t *key, void *data)
 	vt_automode = vconf_keynode_get_bool(key);
 	if (vt_automode) {
 		if (!__vc_elm_initialized) {
-			vc_elm_initialize();
+			__vc_elm_initialize();
 			__vc_elm_initialized = true;
 		}
-		vc_elm_set_auto_register_mode(2, 0);
+		__vc_elm_set_auto_register_mode(2, 0);
 	} else {
-		vc_elm_deinitialize();
+		__vc_elm_deinitialize();
 		__vc_elm_initialized = false;
 	}
 }
@@ -169,16 +229,21 @@ static void __vc_vtauto_changed_cb(keynode_t *key, void *data)
 static void __vc_elm_init(void)
 {
 	int vt_automode = 0;
+	int r;
+
+	r = __load_vc_elm();
+	if (r < 0)
+		return;
 
 	vconf_notify_key_changed(VCONFKEY_VC_VOICE_TOUCH_AUTOMODE,
 			__vc_vtauto_changed_cb, NULL);
 	vconf_get_bool(VCONFKEY_VC_VOICE_TOUCH_AUTOMODE, &vt_automode);
 	if (vt_automode) {
 		if (!__vc_elm_initialized) {
-			vc_elm_initialize();
+			__vc_elm_initialize();
 			__vc_elm_initialized = true;
 		}
-		vc_elm_set_auto_register_mode(2, 0);
+		__vc_elm_set_auto_register_mode(2, 0);
 	}
 
 	setenv("VC_ELM_INIT", "1", 1);