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5.3 KiB
1 lines
5.3 KiB
"use strict";function AudioPlayerAAC(){function a(a,b){var c=new Uint8Array(a.byteLength+b.byteLength);return c.set(new Uint8Array(a),0),c.set(new Uint8Array(b),a.byteLength),c}function b(){n=/Apple Computer/.test(navigator.vendor)&&/Safari/.test(navigator.userAgent)?"audio/x-aac":"audio/aac",p=document.createElement("audio"),document.body.appendChild(p),p.addEventListener("error",d)}function c(){var a=!1;return window.MediaSource?window.MediaSource.isTypeSupported(n)?(o=new MediaSource,o.addEventListener("sourceopen",e),o.addEventListener("sourceclose",g),o.addEventListener("sourceended",h),o.addEventListener("error",i),o.addEventListener("abort",j),a=!0):debug.error("Unsupported MIME type or codec: ",n):debug.error("MediaSource API is not supported!"),a}function d(a){switch(debug.error(a),a.target.error.code){case a.target.error.MEDIA_ERR_ABORTED:debug.error("audio tag error : You aborted the media playback.");break;case a.target.error.MEDIA_ERR_NETWORK:debug.error("audio tag error : A network error caused the media download to fail.");break;case a.target.error.MEDIA_ERR_DECODE:debug.error("audio tag error : The media playback was aborted due to a corruption problem or because the media used features your browser did not support.");break;case a.target.error.MEDIA_ERR_SRC_NOT_SUPPORTED:debug.error("audio tag error : The media could not be loaded, either because the server or network failed or because the format is not supported.");break;default:debug.error("audio tag error : An unknown media error occurred.")}}function e(){if(debug.info("sourceopened"),null===q)try{q=o.addSourceBuffer(n),q.addEventListener("updateend",f)}catch(a){return void debug.error("Exception calling addSourceBuffer : "+a)}}function f(){p.paused&&p.play()}function g(){debug.info("sourceclose")}function h(){debug.info("sourceended")}function i(){debug.info("error")}function j(){debug.info("abort")}function k(){o.removeEventListener("sourceopen",e),o.removeEventListener("sourceclose",g),o.removeEventListener("sourceended",h),o.removeEventListener("error",i),o.removeEventListener("abort",j),q.removeEventListener("updateend",f),p.removeEventListener("error",d)}function l(){}var m=200,n=null,o=null,p=null,q=null,r=0,s=new Uint8Array,t=0,u=0,v=null,w=!1,x=null,y=0;return l.prototype={audioInit:function(a){b();var d=c();return d&&null!==p&&(p.src=window.URL.createObjectURL(o),this.controlVolumn(a),p.play()),d},play:function(){this.controlVolumn(r)},stop:function(){p.volume=0,r=0},bufferAudio:function(b,c){var d=c-t;if((d>m||0>d)&&(s=new Uint8Array,x=new Array,w=!0),w&&(x.push(y),y+=b.length),t=c,s=a(s,b),null!==q&&!w&&!q.updating)try{null!==x?null!==v&&(parseInt(x.length/16)-parseInt(v)>=2&&(v+=1),y=parseInt(16*v,10),y<x.length?(q.appendBuffer(s.subarray(x[y],s.length)),q.buffered.length>0&&(p.currentTime=q.buffered.end(0))):q.buffered.length>0&&(p.currentTime=q.buffered.end(0)-.3)):q.appendBuffer(s),s=new Uint8Array,x=null,y=0}catch(e){}},controlVolumn:function(a){r=a,null!==p&&(p.volume=0>=a?0:a>=1?1:a,r=a)},getVolume:function(){return r},terminate:function(){k(),"open"===o.readyState&&o.removeSourceBuffer(q),o.endOfStream(),q=null,o=null,p.parentElement.removeChild(p),p=null},setBufferingFlag:function(a,b){"init"===b?u=a:w&&(0===a||"undefined"==typeof a||null===a?v=null:(v=a-u,u=0),w=!1)},getBufferingFlag:function(){return w},setInitVideoTimeStamp:function(a){u=a},getInitVideoTimeStamp:function(){return u},setSamplingRate:function(){}},new l}function AudioPlayerGxx(){function a(a,c){var d=c-o;if((d>e||0>d)&&(m=0,t=0,r=!0,null!==u&&u.stop()),m-h.currentTime<0&&(m=0),o=c,s=b(s,a,t),t+=a.length,!r){var g=0;if(t/a.length>1&&(null!==q&&(g=q*f),g>=t||null===q))return void(t=0);var i=null;i=h.createBuffer(1,t-g,l.samplingRate),i.getChannelData(0).set(s.subarray(g,t)),t=0,u=h.createBufferSource(),u.buffer=i,u.connect(j),m||(m=h.currentTime+.1),u.start(m),m+=i.duration}}function b(a,b,c){var d=8e4,e=a;return c+b.length>=e.length&&(e=new Float32Array(e.length+d),e.set(e,0)),e.set(b,c),e}function c(){}var d=8e4,e=200,f=8e3,g=1,h=null,i=null,j=null,k=0,l={type:"G.711",samplingRate:f,bitrate:"8000"},m=0,n=!1,o=0,p=0,q=null,r=!1,s=new Float32Array(d),t=0,u=null;return c.prototype={audioInit:function(a){if(m=0,null!==h)debug.info("Audio context already defined!");else try{return window.AudioContext=window.AudioContext||window.webkitAudioContext||window.mozAudioContext||window.oAudioContext||window.msAudioContext,h=new AudioContext,h.onstatechange=function(){debug.info("Audio Context State changed :: "+h.state),"running"===h.state&&(n=!0)},i=h.createGain(),j=h.createBiquadFilter(),j.connect(i),j.type="lowpass",j.frequency.value=4e3,j.gain.value=40,i.connect(h.destination),this.controlVolumn(a),!0}catch(b){return debug.error("Web Audio API is not supported in this web browser! : "+b),!1}},play:function(){this.controlVolumn(k)},stop:function(){k=0,i.gain.value=0,m=0},bufferAudio:function(b,c){n&&a(b,c)},controlVolumn:function(a){k=a;var b=a/g;0>=b?(i.gain.value=0,m=0):i.gain.value=b>=1?1:b},getVolume:function(){return k},terminate:function(){"closed"!==h.state&&(m=0,n=!1,h.close())},setBufferingFlag:function(a,b){"init"===b?p=a:r&&(0===a||"undefined"==typeof a||null===a?q=null:(q=a-p,p=0),r=!1)},getBufferingFlag:function(){return r},setInitVideoTimeStamp:function(a){p=a},getInitVideoTimeStamp:function(){return p},setSamplingRate:function(a){l.samplingRate=a}},new c}
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