just_audio/darwin/Classes/ClippingAudioSource.m
2020-09-18 19:17:35 +02:00

80 lines
2.2 KiB
Objective-C

#import "AudioSource.h"
#import "ClippingAudioSource.h"
#import "IndexedPlayerItem.h"
#import "UriAudioSource.h"
#import <AVFoundation/AVFoundation.h>
@implementation ClippingAudioSource {
UriAudioSource *_audioSource;
CMTime _start;
CMTime _end;
}
- (instancetype)initWithId:(NSString *)sid audioSource:(UriAudioSource *)audioSource start:(NSNumber *)start end:(NSNumber *)end {
self = [super initWithId:sid];
NSAssert(self, @"super init cannot be nil");
_audioSource = audioSource;
_start = start == [NSNull null] ? kCMTimeZero : CMTimeMake([start intValue], 1000);
_end = end == [NSNull null] ? kCMTimeInvalid : CMTimeMake([end intValue], 1000);
return self;
}
- (UriAudioSource *)audioSource {
return _audioSource;
}
- (void)findById:(NSString *)sourceId matches:(NSMutableArray<AudioSource *> *)matches {
[super findById:sourceId matches:matches];
[_audioSource findById:sourceId matches:matches];
}
- (void)attach:(AVQueuePlayer *)player {
[super attach:player];
_audioSource.playerItem.forwardPlaybackEndTime = _end;
// XXX: Not needed since currentItem observer handles it?
[self seek:kCMTimeZero];
}
- (IndexedPlayerItem *)playerItem {
return _audioSource.playerItem;
}
- (NSArray *)getShuffleOrder {
return @[@(0)];
}
- (void)play:(AVQueuePlayer *)player {
}
- (void)pause:(AVQueuePlayer *)player {
}
- (void)stop:(AVQueuePlayer *)player {
}
- (void)seek:(CMTime)position completionHandler:(void (^)(BOOL))completionHandler {
if (!completionHandler || (self.playerItem.status == AVPlayerItemStatusReadyToPlay)) {
CMTime absPosition = CMTimeAdd(_start, position);
[_audioSource.playerItem seekToTime:absPosition toleranceBefore:kCMTimeZero toleranceAfter:kCMTimeZero completionHandler:completionHandler];
}
}
- (CMTime)duration {
return CMTimeSubtract(CMTIME_IS_INVALID(_end) ? self.playerItem.duration : _end, _start);
}
- (void)setDuration:(CMTime)duration {
}
- (CMTime)position {
return CMTimeSubtract(self.playerItem.currentTime, _start);
}
- (CMTime)bufferedPosition {
CMTime pos = CMTimeSubtract(_audioSource.bufferedPosition, _start);
CMTime dur = [self duration];
return CMTimeCompare(pos, dur) >= 0 ? dur : pos;
}
@end