gstreamer/examples/tutorials/xcode iOS/Tutorial 5/GStreamerBackendDelegate.h

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#import <Foundation/Foundation.h>
@protocol GStreamerBackendDelegate <NSObject>
@optional
/* Called when the GStreamer backend has finished initializing
* and is ready to accept orders. */
-(void) gstreamerInitialized;
/* Called when the GStreamer backend wants to output some message
* to the screen. */
-(void) gstreamerSetUIMessage:(NSString *)message;
/* Called when the media size is first discovered or it changes */
-(void) mediaSizeChanged:(NSInteger)width height:(NSInteger)height;
/* Called when the media position changes. Times in milliseconds */
-(void) setCurrentPosition:(NSInteger)position duration:(NSInteger)duration;
@end