Mac 10.6 で Cocoa を使用しています。メトロノームで時間を鳴らそうとしていますが、コードを実行すると最初の 2 つの音だけが再生され、最後に音が再び再生されるまで静かです。[player play] ステートメントを NSBeep() に置き換えると、正常に動作します。助言がありますか?
#import <Cocoa/Cocoa.h>
@interface Metronome : NSObject {
NSInteger timeSig;
NSInteger noteValue;
NSInteger bpm;
NSUInteger beatNumber;
CGFloat duration;
NSSound *tickPlayer;
NSSound *tockPlayer;
}
@property(readwrite) NSInteger timeSig;
@property(readwrite) NSInteger noteValue;
@property(readwrite) NSInteger bpm;
@property(readwrite) float duration;
@property(readwrite) NSUInteger beatNumber;
-(id)init;
-(id)initWithTimeSig:(NSInteger)ts andNoteValue:(NSInteger)nv andBpm:(NSInteger)bp;
-(void)BeginMetronome;
-(void)PlaySound;
@end
#import "Metronome.h"
#define defaultBpm 80
#define defaultTimeSig 4
#define defaultNoteValue 4
@implementation Metronome
@synthesize timeSig, noteValue, duration, bpm, beatNumber;
-(id)init{
return [self initWithTimeSig:defaultTimeSig andNoteValue:defaultNoteValue andBpm:defaultBpm];
}
-(id)initWithTimeSig:(NSInteger)ts andNoteValue:(NSInteger)nv andBpm:(NSInteger)bp {
[super init];
if(self){
self.timeSig = ts;
self.noteValue = nv;
self.bpm = bp;
self.duration = 60.0/bpm;
tickPlayer = [NSSound soundNamed:@"Hat1"];
tockPlayer = [NSSound soundNamed:@"Hat2"];
self.beatNumber = 1;
}
return self;
}
-(void)BeginMetronome{
BOOL continuePlaying = YES;
NSInteger iter=0;
while (continuePlaying){
if(iter > 12){
continuePlaying = FALSE;
}
iter++;
[self PlaySound];
NSDate *curtainTime = [[NSDate alloc] initWithTimeIntervalSinceNow:self.duration];
NSDate *currentTime = [[NSDate alloc] init];
while (continuePlaying && ([currentTime compare:curtainTime] != NSOrderedDescending)) {
// if ([soundPlayerThread isCancelled] == YES) {
// continuePlaying = NO;
//}
//[NSThread sleepForTimeInterval:0.01];
sleep(.01);
//[tickPlayer stop];
//[tockPlayer stop];
[currentTime release];
currentTime = [[NSDate alloc] init];
}
[curtainTime release];
[currentTime release];
}
}
- (void)PlaySound { //***********Problem in this loop
if ([tickPlayer isPlaying])
[tickPlayer stop];
if ([tockPlayer isPlaying])
[tockPlayer stop];
if (beatNumber == 1) {
[tockPlayer play];
}
else if (beatNumber == 2){
[tickPlayer play];
}
else if (beatNumber == self.timeSig) {
beatNumber = 0;
[tickPlayer play];
}
else{
//[tickPlayer stop];
[tickPlayer play];
NSBeep();
}
beatNumber++;
//NSLog(@" %d ", beatNumber);
// NSBeep();
}
@end