[AUDIO] add close mp3 file playing

Change-Id: I2345b112e9143f0685dad6997706757cc26cbdbf
diff --git a/mbtk/mbtk_lib/src/mbtk_audio_alsa.c b/mbtk/mbtk_lib/src/mbtk_audio_alsa.c
index d654c6a..6d85edc 100755
--- a/mbtk/mbtk_lib/src/mbtk_audio_alsa.c
+++ b/mbtk/mbtk_lib/src/mbtk_audio_alsa.c
@@ -220,6 +220,16 @@
     pthread_mutex_unlock(&pcxt->_cond_mutex);
 }
 
+
+int mbtk_audio_get_status(void* hdl)
+{
+    struct mopen_audio_t *pcxt = (struct mopen_audio_t *)hdl;
+    if (NULL == hdl || NULL == internal_hdl)
+        return 0;
+
+    return pcxt->state;
+}
+
 static void* mbtk_record_pthread(void* hdl)
 {
     struct mopen_audio_t *pcxt = (struct mopen_audio_t *)hdl;