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68 lines
1.8 KiB
68 lines
1.8 KiB
/*
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meSpeakFallback.as
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An experimental fallback option for meSpeak to play wav files
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Wav-files are sent as a plain array of uint 8-bit data via ExternalInterface
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JS interface:
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meSpeakFallback.play( <wav-array> );
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meSpeak.setVolume( value ) // 0 >= value <= 1
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Handshake: calls JS function 'meSpeakFallbackHandshake()', when initialized and ready
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Norbert Landsteiner, www.masswerk.at, July 2013
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*/
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package {
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import flash.display.Sprite;
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import flash.events.Event;
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import flash.external.ExternalInterface;
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import flash.media.Sound;
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import flash.media.SoundTransform;
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import flash.utils.ByteArray;
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import flash.utils.setTimeout;
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import org.as3wavsound.WavSound;
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import org.as3wavsound.WavSoundChannel;
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public class meSpeakFallback extends Sprite
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{
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private var sndTransform:SoundTransform=new SoundTransform(1, 0);
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public function meSpeakFallback()
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{
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initExtIF();
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}
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private function initExtIF():void {
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var available:Boolean=false;
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try {
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if (ExternalInterface.available) {
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ExternalInterface.addCallback("play", play);
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ExternalInterface.addCallback("setVolume", setVolume);
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ExternalInterface.call("meSpeakFallbackHandshake");
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available=true;
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}
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}
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catch (e:Error) {}
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if (!available) setTimeout(initExtIF, 100);
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}
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public function setVolume(v:Number=0):void {
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if (v>=0 && v<=1) sndTransform.volume=v;
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}
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public function play(data:Array=null):void {
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if (!data) return;
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var l:uint=data.length;
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if (!l) return;
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// copy data to a ByteArray (oops: time, memory!)
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var ba:ByteArray=new ByteArray();
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ba.length=l;
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for (var i:uint=0; i<l; i++) ba.writeByte(data[i]);
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// play sound with global volume
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var snd:WavSound = new WavSound(ba);
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var chnl:WavSoundChannel=snd.play(0, 0, sndTransform);
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}
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}
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}
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