OSX: run native event loop in a separate thread

This commit is a followup on the previous one and uses a solution I like more
since it totally decouples the Cocoa code from mpv's core and tries to emulate
a generic Cocoa application's lifecycle as much as possible without fighting
the framework.

mpv's main is executed in a pthread while the main thread runs the native cocoa
event loop.

All of the thread safety is mainly accomplished with additional logic in
cocoa_common as to not increase complexity on the crossplatform parts of the
code.

1 files changed, 8 insertions, 9 deletions

diff --git a/osdep/macosx_application.h b/osdep/macosx_application.h
index c2227ae05d..b0f7944512 100644
--- a/osdep/macosx_application.h
+++ b/osdep/macosx_application.h
@@ -22,9 +22,7 @@
 struct input_ctx;
 struct mp_fifo;
 
-// Playloop callback function pointer
-typedef void(*play_loop_callback)(void *);
-typedef int(*should_stop_callback)(void *);
+typedef int (*mpv_main_fn)(int, char**);
 
 // Menu Keys identifing menu items
 typedef enum {
@@ -35,22 +33,23 @@ typedef enum {
     MPM_ZOOM,
 } MPMenuKey;
 
+// multithreaded wrapper for mpv_main
+int cocoa_main(mpv_main_fn mpv_main, int argc, char *argv[]);
+
 void cocoa_register_menu_item_action(MPMenuKey key, void* action);
 
 // initializes Cocoa application
 void init_cocoa_application(void);
 void terminate_cocoa_application(void);
+void cocoa_autorelease_pool_alloc(void);
+void cocoa_autorelease_pool_drain(void);
 
 // Runs the Cocoa Main Event Loop
 void cocoa_run_runloop(void);
+void cocoa_stop_runloop(void);
 void cocoa_post_fake_event(void);
 
-// Adds play_loop as a timer of the Main Cocoa Event Loop
-void cocoa_run_loop_schedule(play_loop_callback callback,
-                             should_stop_callback playback_stopped,
-                             void *context,
-                             struct input_ctx *input_context,
-                             struct mp_fifo *key_fifo);
+void cocoa_set_state(struct input_ctx *input_context, struct mp_fifo *key_fifo);
 
 void macosx_finder_args_preinit(int *argc, char ***argv);