59 lines
1.2 KiB
JavaScript
59 lines
1.2 KiB
JavaScript
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//>>built
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define("dojox/encoding/bits",["dojo/_base/lang"],function(_1){
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var _2=_1.getObject("dojox.encoding.bits",true);
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_2.OutputStream=function(){
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this.reset();
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};
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_1.extend(_2.OutputStream,{reset:function(){
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this.buffer=[];
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this.accumulator=0;
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this.available=8;
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},putBits:function(_3,_4){
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while(_4){
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var w=Math.min(_4,this.available);
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var v=(w<=_4?_3>>>(_4-w):_3)<<(this.available-w);
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this.accumulator|=v&(255>>>(8-this.available));
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this.available-=w;
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if(!this.available){
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this.buffer.push(this.accumulator);
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this.accumulator=0;
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this.available=8;
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}
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_4-=w;
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}
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},getWidth:function(){
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return this.buffer.length*8+(8-this.available);
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},getBuffer:function(){
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var b=this.buffer;
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if(this.available<8){
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b.push(this.accumulator&(255<<this.available));
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}
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this.reset();
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return b;
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}});
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_2.InputStream=function(_5,_6){
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this.buffer=_5;
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this.width=_6;
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this.bbyte=this.bit=0;
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};
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_1.extend(_2.InputStream,{getBits:function(_7){
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var r=0;
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while(_7){
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var w=Math.min(_7,8-this.bit);
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var v=this.buffer[this.bbyte]>>>(8-this.bit-w);
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r<<=w;
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r|=v&~(~0<<w);
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this.bit+=w;
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if(this.bit==8){
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++this.bbyte;
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this.bit=0;
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}
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_7-=w;
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}
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return r;
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},getWidth:function(){
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return this.width-this.bbyte*8-this.bit;
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}});
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return _2;
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});
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