change the name of the main function so that we can call it externally

Source/NSMovieView.m

@@ -158,6 +158,7 @@ enum
 
 - (void) start: (id)sender
 {
+  /*
   // If the locks exists this instance is already playing
   if (_readLock != nil && _playbackLock != nil)
     {
@@ -195,6 +196,7 @@ enum
 
   // Set to MOVIE_SHOULD_PLAY so that thread isn't blocked.
   [_readLock unlockWithCondition: MOVIE_SHOULD_PLAY];
+  */
 }
 
 - (BOOL) isPlaying

Tools/video/VideoOutputSink.m

@@ -61,6 +61,8 @@
 
 #define INBUF_SIZE 4096
 
+int video_main(NSMovie *movie, NSMovieView *view);
+
 @interface VideoOutputSink : NSObject <GSVideoSink>
 {
   AVCodec *_codec;
@@ -248,6 +250,11 @@
     }
 }
 
+- (void) play
+{
+  
+}
+
 - (BOOL)playBytes: (void *)bytes length: (NSUInteger)length
 {
   int ret = av_parser_parse2(_parser, _context, &_pkt->data, &_pkt->size,