mac: fix libmpv usage without embedding

NSApp is only an Application when initialised from mpv itself. when used
via libmpv an Application is never initialised and mpv would always
immediately exit.

make the retrieval of the vo and mac options static so they can be
retrieved in all cases.

Fixes mpv-player#12518

osdep/macos/libmpv_helper.swift

@@ -34,10 +34,8 @@ class LibmpvHelper {
         mpvHandle = mpv
         log = LogHelper(mpLog)
 
-        guard let app = NSApp as? Application,
-              let ptr = mp_get_config_group(nil,
-                                            mp_client_get_global(mpvHandle),
-                                            app.getMacOSConf()) else
+        let global = mp_client_get_global(mpvHandle)
+        guard let ptr = mp_get_config_group(nil, global, Application.getMacOSConf()) else
         {
             log.sendError("macOS config group couldn't be retrieved'")
             exit(1)

osdep/macos/mpv_helper.swift

@@ -42,23 +42,14 @@ class MPVHelper {
         self.vo = vo
         self.log = log
 
-        guard let app = NSApp as? Application,
-              let cache = m_config_cache_alloc(vo, vo.pointee.global, app.getVoSubConf()) else
+        guard let cache = m_config_cache_alloc(vo, vo.pointee.global, Application.getVoSubConf()),
+              let macCache = m_config_cache_alloc(vo, vo.pointee.global, Application.getMacOSConf()) else
         {
-            log.sendError("NSApp couldn't be retrieved")
+            // will never be hit, mp_get_config_group asserts for invalid groups
             exit(1)
         }
-
         optsCachePtr = cache
         optsPtr = UnsafeMutablePointer<mp_vo_opts>(OpaquePointer(cache.pointee.opts))
-
-        guard let macCache = m_config_cache_alloc(vo,
-                                                  vo.pointee.global,
-                                                  app.getMacOSConf()) else
-        {
-            // will never be hit, mp_get_config_group asserts for invalid groups
-            exit(1)
-        }
         macOptsCachePtr = macCache
         macOptsPtr = UnsafeMutablePointer<macos_opts>(OpaquePointer(macCache.pointee.opts))
     }

osdep/macosx_application.m

@@ -190,12 +190,12 @@ - (void)setMpvHandle:(struct mpv_handle *)ctx
 #endif
 }
 
-- (const struct m_sub_options *)getMacOSConf
++ (const struct m_sub_options *)getMacOSConf
 {
     return &macos_conf;
 }
 
-- (const struct m_sub_options *)getVoSubConf
++ (const struct m_sub_options *)getVoSubConf
 {
     return &vo_sub_opts;
 }

osdep/macosx_application_objc.h

@@ -31,8 +31,8 @@ struct mpv_handle;
 - (void)stopMPV:(char *)cmd;
 - (void)openFiles:(NSArray *)filenames;
 - (void)setMpvHandle:(struct mpv_handle *)ctx;
-- (const struct m_sub_options *)getMacOSConf;
-- (const struct m_sub_options *)getVoSubConf;
++ (const struct m_sub_options *)getMacOSConf;
++ (const struct m_sub_options *)getVoSubConf;
 
 @property(nonatomic, retain) MenuBar *menuBar;
 @property(nonatomic, assign) size_t openCount;