Updated packages, rewrote player = gapless playback, faster loading

just_audio/macos/Classes/IndexedAudioSource.m

@@ -0,0 +1,68 @@
+#import "IndexedAudioSource.h"
+#import "IndexedPlayerItem.h"
+#import <AVFoundation/AVFoundation.h>
+
+@implementation IndexedAudioSource {
+    BOOL _isAttached;
+}
+
+- (instancetype)initWithId:(NSString *)sid {
+    self = [super init];
+    NSAssert(self, @"super init cannot be nil");
+    _isAttached = NO;
+    return self;
+}
+
+- (IndexedPlayerItem *)playerItem {
+    return nil;
+}
+
+- (BOOL)isAttached {
+    return _isAttached;
+}
+
+- (int)buildSequence:(NSMutableArray *)sequence treeIndex:(int)treeIndex {
+    [sequence addObject:self];
+    return treeIndex + 1;
+}
+
+- (int)shuffle:(int)treeIndex currentIndex:(int)currentIndex {
+    return treeIndex + 1;
+}
+
+- (void)attach:(AVQueuePlayer *)player {
+    _isAttached = YES;
+}
+
+- (void)play:(AVQueuePlayer *)player {
+}
+
+- (void)pause:(AVQueuePlayer *)player {
+}
+
+- (void)stop:(AVQueuePlayer *)player {
+}
+
+- (void)seek:(CMTime)position {
+    [self seek:position completionHandler:nil];
+}
+
+- (void)seek:(CMTime)position completionHandler:(void (^)(BOOL))completionHandler {
+}
+
+- (CMTime)duration {
+    return kCMTimeInvalid;
+}
+
+- (void)setDuration:(CMTime)duration {
+}
+
+- (CMTime)position {
+    return kCMTimeInvalid;
+}
+
+- (CMTime)bufferedPosition {
+    return kCMTimeInvalid;
+}
+
+@end