Add an option for subs auto loading

vlc-android/res/values/strings.xml

@@ -338,6 +338,7 @@
     <string name="subtitles_color_green">Green</string>
     <string name="subtitles_background_title">Subtitles Background</string>
     <string name="subtitles_bold_title">Bold subtitles</string>
+    <string name="subtitles_autoload_title">Auto load subtitles</string>
 
     <string name="audio_prefs_category">Audio</string>
     <string name="lockscreen_cover_title">Media cover on Lockscreen</string>

vlc-android/res/xml/preferences_subtitles.xml

@@ -4,6 +4,10 @@
     android:key="subtitles_category"
     android:title="@string/subtitles_prefs_category">
 
+    <CheckBoxPreference
+        android:defaultValue="true"
+        android:key="subtitles_autoload"
+        android:title="@string/subtitles_autoload_title" />
     <ListPreference
         android:defaultValue="16"
         android:entries="@array/subtitles_size_entries"

vlc-android/src/org/videolan/vlc/util/VLCOptions.java

@@ -197,10 +197,9 @@ public class VLCOptions {
             }
         } /* else automatic: use default options */
 
-        if (noVideo)
-            media.addOption(":no-video");
-        if (paused)
-            media.addOption(":start-paused");
+        if (noVideo) media.addOption(":no-video");
+        if (paused) media.addOption(":start-paused");
+        if (!PreferenceManager.getDefaultSharedPreferences(context).getBoolean("subtitles_autoload", true)) media.addOption(":sub-language=none");
     }
 
     private static MediaPlayer.Equalizer getEqualizerSetFromSettings(SharedPreferences pref) {