initial commit

Example/SellyCloudSDK/Play/AVLiveStreamModel.m

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+//
+//  AVLiveStreamModel.m
+//  AVDemo
+//
+
+#import "AVLiveStreamModel.h"
+
+@implementation AVLiveStreamModel
+
+- (NSString *)displayName {
+    return self.stream.length > 0 ? self.stream : @"未知流";
+}
+
+- (NSString *)durationString {
+    NSInteger totalSeconds = (NSInteger)self.duration;
+    NSInteger hours = totalSeconds / 3600;
+    NSInteger minutes = (totalSeconds % 3600) / 60;
+    NSInteger seconds = totalSeconds % 60;
+    
+    if (hours > 0) {
+        // 大于1小时，显示 hh:mm:ss
+        return [NSString stringWithFormat:@"%02ld:%02ld:%02ld", (long)hours, (long)minutes, (long)seconds];
+    } else {
+        // 1小时内，显示 mm:ss
+        return [NSString stringWithFormat:@"%02ld:%02ld", (long)minutes, (long)seconds];
+    }
+}
+
+@end