驻波：无限循环 MP3

Question

如何在 驻波 中无限循环播放 mp3 文件。我尝试过 LoopSource 和 SoundGenerators 等，但我没有运气。我在文档或网上找不到循环 anInfinitely mp3 的人的使用示例：

var player:AudioPlayer = new AudioPlayer()
const generator:SoundGenerator = new SoundGenerator(sound)
source = new LoopSource(new AudioDescriptor(), generator)
player.play(source)

谢谢

Answer 1

我是该库的作者。由于很多人问这个问题，我在该项目的 github wiki 中添加了一个页面来回答这个问题。

https://github.com/maxl0rd/standwave3/wiki/How-to -use-loopsource

希望有帮助。

Answer 2

看起来 LoopSource 函数的 AudioDescriptor 参数应该与 soundGenerator 参数匹配。根据文档，实例化一个新的 AudioDescriptor 会将 channels 和 rate 属性设置为 NaN （即使它们'重新输入uint？？）。无论如何，看看这是否有效：

var player:AudioPlayer = new AudioPlayer()
const generator:SoundGenerator = new SoundGenerator(sound)
source = new LoopSource(generator.descriptor, generator)
player.play(source)

除此之外，AudioPlayer 类包含一个完整事件，该事件在音频源完成播放时调度。您可以简单地使用布尔开关来设置自己的循环，以从完整的处理程序中调用 play(source:IAudioSource) 。

Answer 3

我一直在尝试使用如何使用loopsource信息这里< /a>.我可以播放声音，但只能循环 3 次。想法？

import com.noteflight.standingwave3.performance.ListPerformance;
import com.noteflight.standingwave3.elements.AudioDescriptor;
import com.noteflight.standingwave3.performance.AudioPerformer;
import com.noteflight.standingwave3.elements.IAudioSource;
import com.noteflight.standingwave3.sources.SineSource;
import com.noteflight.standingwave3.output.AudioPlayer;
import hype.framework.behavior.AbstractBehavior;
import com.greensock.loading.LoaderMax;
import com.greensock.loading.MP3Loader;
import com.noteflight.standingwave3.sources.LoopSource;
import com.noteflight.standingwave3.elements.Sample;
import flash.media.Sound;
import com.greensock.events.LoaderEvent;
import com.demonsters.debugger.MonsterDebugger;
import flash.events.Event;


var player:AudioPlayer = new AudioPlayer();
var loader:LoaderMax = new LoaderMax( { onComplete:onComplete } );
loader.append( new MP3Loader( "../deploy/assets/audio/Letter_A1.mp3", { autoPlay:false } ) );
loader.load();


function onComplete(e:LoaderEvent):void
{

    var mySound:Sound = e.currentTarget.content[ 0 ] as Sound;
    var length:Number = mySound.length * 44.1;
    var mySample:com.noteflight.standingwave3.elements.Sample = new com.noteflight.standingwave3.elements.Sample( new AudioDescriptor, length );

    mySample.extractSound( mySound, 0, length ); // now all of the Sound's data is in this Sample

    // LoopSource
    var myLoop:LoopSource = new LoopSource( new AudioDescriptor( 44100, 2 ), mySample );
    myLoop.firstFrame = 1;
    myLoop.startFrame = 1;
    myLoop.endFrame = myLoop.frameCount;

    // Play.
    player.play( myLoop );

}

Answer 4

好吧，由于我在尝试根据文档和少量在线帮助循环音频源时遇到了困难，所以我决定创建自己的 Standing Wave 3 插件库。它并不完美，但它可以完成工作，并且是在字节级别上；没有循环计时器或任何东西。它的工作原理是接收带有开始和结束循环点的声音。然后，它根据提供的时间（以秒为单位）多次克隆循环样本。它应该可以直接使用。这是 Main.as 类的代码
“examples”文件夹中的“looping”文件：

package
{

    // Imports.
    import com.greensock.events.LoaderEvent;
    import com.greensock.loading.LoaderMax;
    import com.greensock.loading.MP3Loader;
    import flash.display.Sprite;
    import flash.events.Event;
    import com.greensock.TweenMax;
    import com.SW3.gadget.LoopGadget;
    import flash.media.Sound;


    // Class.
    public class Main extends Sprite
    {

        // Vars.
        private var loader:LoaderMax;// Using LoaderMax for ease of use.


        // Constructor.
        public function Main()
        {

            trace("Main");

            loader = new LoaderMax( { name:"audio", onComplete:onSoundsLoaded } );
            loader.append( new MP3Loader( "assets/Beat.mp3", { autoPlay:false } ) );
            loader.append( new MP3Loader( "assets/Clap.mp3", { autoPlay:false } ) );
            loader.append( new MP3Loader( "assets/Boom.mp3", { autoPlay:false } ) );
            loader.load();

        }


        private function onSoundsLoaded(e:LoaderEvent):void
        {

            trace("onSoundsLoaded");
            var looping:LoopGadget = new LoopGadget;
            looping.addLoopSound( "Beat", e.currentTarget.content[ 0 ] as Sound, 0, 10 );
            looping.addLoopSound( "Clap", e.currentTarget.content[ 1 ] as Sound, 0, 10 );
            //looping.addLoopSound( "Boom", e.currentTarget.content[ 2 ] as Sound, 0, 10 ); // Commented out to test possible error.

            looping.playLoop( "Beat" );// Play the "Beat" loop.
            looping.playLoop( "Clap" );// Play the "Clap" loop.
            looping.stopLoop( "Beat" );// Stop the "Beat" loop.
            looping.playLoop( "Beat" );// Play the "Beat" loop.
            looping.playLoop( "Beat" );// Play the "Beat" loop again to test if it would error out..

            looping.stopAllLoops();// Stop all the loops.
            looping.playLoops( [ "Beat", "Clap", "Boom" ] );// Play all the loops. Test to see if "Boom" will error out.

        }

    }

}

在此处查看源文件：
https://github.com/charlesclements/standwave3-addons