如何在AudioQueue中检查当前时间和持续时间 [英] How to check current time and duration in AudioQueue

问题描述

如何在audioQueue中获取音乐的总持续时间.我正在使用

How to get total time duration of music in audioQueue. I am using

NSTimeInterval AQPlayer::getCurrentTime()
{
    NSTimeInterval timeInterval = 0.0;

    AudioQueueTimelineRef timeLine;
    OSStatus status = AudioQueueCreateTimeline(mQueue, &timeLine);
    if(status == noErr)
    {
        AudioTimeStamp timeStamp;
        AudioQueueGetCurrentTime(mQueue, timeLine, &timeStamp, NULL);
        timeInterval = timeStamp.mSampleTime;
    }

    return timeInterval;
}

AudioQueueGetCurrentTime(mQueue，timeLine，& timeStamp，NULL);对于获取当前播放时间，它提供了一个较大的值，它是否有效以及如何获取音乐文件的持续时间.

AudioQueueGetCurrentTime(mQueue, timeLine, &timeStamp, NULL); for getting current playing time, it gives some large value is it valid and how to get duration of music file.

推荐答案

供以后参考，我对Chandan的代码进行了一些修改，以秒为单位获取正确的时间:

For future reference, I am getting a correct time in seconds using a slight modification of Chandan's code:

int AQPlayer::GetCurrentTime() {
    int timeInterval = 0;
    AudioQueueTimelineRef timeLine;
    OSStatus status = AudioQueueCreateTimeline(mQueue, &timeLine);
    if(status == noErr) {
        AudioTimeStamp timeStamp;
        AudioQueueGetCurrentTime(mQueue, timeLine, &timeStamp, NULL);
        timeInterval = timeStamp.mSampleTime / mDataFormat.mSampleRate; // modified
    }
    return timeInterval;
}

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