xcode AVPlayer - 为 CMTime 添加秒数
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AVPlayer - Add Seconds to CMTime
提问by Lorenz W?hr
How can I add 5 seconds to my current playing Time?
Actually this is my code:
如何将 5 秒添加到我当前的播放时间？
其实这是我的代码：
CMTime currentTime = music.currentTime;
I can′t use CMTimeGetSeconds() , because I need the CMTime format.
我不能使用 CMTimeGetSeconds() ，因为我需要 CMTime 格式。
Thank you for your answers...
谢谢您的回答...
EDIT: How can I set a variable for CMTime?
编辑：如何为 CMTime 设置变量？
回答by BlueVoodoo
Here is one way:
这是一种方法：
CMTimeMakeWithSeconds(CMTimeGetSeconds(music.currentTime) + 5, music.currentTime.timescale);
回答by tomasgatial
elegant way is using CMTimeAdd
优雅的方式是使用 CMTimeAdd
CMTime currentTime = music.currentTime;
CMTime timeToAdd = CMTimeMakeWithSeconds(5,1);
CMTime resultTime = CMTimeAdd(currentTime,timeToAdd);
//then hopefully
[music seekToTime:resultTime];
to your edit: you can create CMTime struct by these ways
到您的编辑：您可以通过这些方式创建 CMTime 结构
CMTimeMake
CMTimeMakeFromDictionary
CMTimeMakeWithEpoch
CMTimeMakeWithSeconds
更多@：https: //developer.apple.com/library/mac/#documentation/CoreMedia/Reference/CMTime/Reference/reference.html
回答by Rudolf Adamkovi?
In Swift:
在斯威夫特：
private extension CMTime {
func timeWithOffset(offset: NSTimeInterval) -> CMTime {
let seconds = CMTimeGetSeconds(self)
let secondsWithOffset = seconds + offset
return CMTimeMakeWithSeconds(secondsWithOffset, timescale)
}
}
回答by idrougge
Swift 4, using custom operator:
Swift 4，使用自定义运算符：
extension CMTime {
static func + (lhs: CMTime, rhs: TimeInterval) -> CMTime {
return CMTime(seconds: lhs.seconds + rhs,
preferredTimescale: lhs.timescale)
}
static func += (lhs: inout CMTime, rhs: TimeInterval) {
lhs = CMTime(seconds: lhs.seconds + rhs,
preferredTimescale: lhs.timescale)
}
}
