macosx_finder_args: use cocoa instead of carbon

macosx_finder_args was using Carbon and wasn't usable any longer on
modern versions of MacOSX. This is very useful to embed mplayer in a
mac application bundle.

When using application bundles, the operating system will call the
main function with only one argument that identifies the process
serial number (this is some additional process identifier in osx other
than the pid). File open events are then dispatched to the application
through events that must be handled accordingly.

1 files changed, 83 insertions, 0 deletions

diff --git a/osdep/macosx_finder_args.m b/osdep/macosx_finder_args.m
new file mode 100644
index 0000000000..cce5acbcc6
--- /dev/null
+++ b/osdep/macosx_finder_args.m
@@ -0,0 +1,83 @@
+/*
+ * This file is part of mplayer2.
+ *
+ * mplayer2 is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mplayer2 is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with mplayer2; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#import <Cocoa/Cocoa.h>
+#import <ApplicationServices/ApplicationServices.h>
+#include <stdio.h>
+#include "macosx_finder_args.h"
+
+static play_tree_t *files = NULL;
+
+void macosx_wait_fileopen_events(void);
+bool psn_matches_current_process(char *psn_arg_to_check);
+
+@interface FileOpenDelegate : NSObject
+- (void)application:(NSApplication *)sender openFiles:(NSArray *)filenames;
+@end
+
+@implementation FileOpenDelegate
+- (void)application:(NSApplication *)sender openFiles:(NSArray *)filenames
+{
+    files = play_tree_new();
+    play_tree_t *last_entry = nil;
+    for (NSString *filename in filenames) {
+        play_tree_t *entry = play_tree_new();
+        play_tree_add_file(entry, [filename UTF8String]);
+
+        if (last_entry)
+          play_tree_append_entry(files, entry);
+        else
+          play_tree_set_child(files, entry);
+
+        last_entry = entry;
+    }
+    [NSApp stop:nil]; // stop the runloop (give back control to mplayer2 code)
+}
+@end
+
+void macosx_wait_fileopen_events()
+{
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+    NSApp = [NSApplication sharedApplication];
+    [NSApp setDelegate: [[[FileOpenDelegate alloc] init] autorelease]];
+    [NSApp run]; // block until we recive the fileopen events
+    [pool release];
+}
+
+bool psn_matches_current_process(char *psn_arg_to_check)
+{
+    ProcessSerialNumber psn;
+    char psn_arg[5+10+1+10+1];
+
+    GetCurrentProcess(&psn);
+    snprintf(psn_arg, 5+10+1+10+1, "-psn_%u_%u",
+             psn.highLongOfPSN, psn.lowLongOfPSN);
+    psn_arg[5+10+1+10]=0;
+
+    return strcmp(psn_arg, psn_arg_to_check) == 0;
+}
+
+play_tree_t *macosx_finder_args(m_config_t *config, int argc, char **argv)
+{
+    if (argc==2 && psn_matches_current_process(argv[1])) {
+        m_config_set_option0(config, "quiet", NULL, false);
+        macosx_wait_fileopen_events();
+    }
+
+    return files;
+}