Files
FreeJ/xcode/FrameRate.h

40 lines
1.1 KiB
Objective-C

/* FreeJ
* (c) Copyright 2009 Andrea Guzzo <xant@dyne.org>
*
* This source code is free software; you can redistribute it and/or
* modify it under the terms of the GNU Public License as published
* by the Free Software Foundation; either version 3 of the License,
* or (at your option) any later version.
*
* This source code 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.
* Please refer to the GNU Public License for more details.
*
* You should have received a copy of the GNU Public License along with
* this source code; if not, write to:
* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#import <Cocoa/Cocoa.h>
// GOT From apple example : QTQuartzPlayer
#pragma mark
// Frame rate calculator
#define NumStamps 25
@interface FrameRate : NSObject
{
int _count;
int32_t _scale;
double _rate;
int64_t _stamps[NumStamps + 1];
NSRecursiveLock *lock;
}
-(id)initWithTimeScale:(int32_t)scale;
-(void)tick:(int64_t)timestamp;
-(double)rate;
@end