/*! JpegCamera 1.0.0 | 2013-07-29
    (c) 2013 Adam Wrobel
    http://amw.github.io/jpeg_camera */
!function(){var a,b,c,d,e={}.hasOwnProperty,f=function(a,b){function c(){this.constructor=a}for(var d in b)e.call(b,d)&&(a[d]=b[d]);return c.prototype=b.prototype,a.prototype=new c,a.__super__=b.prototype,a};a=function(){function a(a,b){if(this.container="string"==typeof a?document.querySelector(a):a,!this.container||!this.container.offsetWidth)throw"JpegCamera: invalid container";this.container.innerHTML="",this.options=this._extend({},this.constructor.DefaultOptions,b),this._engine_init()}return a.DefaultOptions={shutter_url:"/jpeg_camera/shutter.mp3",swf_url:"/jpeg_camera/jpeg_camera.swf",on_debug:function(a){return console&&console.log?console.log("JpegCamera: "+a):void 0},quality:.9,shutter:!0,mirror:!1,timeout:0},a.prototype.ready=function(a){return this.options.on_ready=a,this.options.on_ready&&this._is_ready&&this.options.on_ready.call(this),this},a.prototype._is_ready=!1,a.prototype.error=function(a){return this.options.on_error=a,this.options.on_error&&this._error_occured&&this.options.on_error.call(this,this._error_occured),this},a.prototype._error_occured=!1,a.prototype.capture=function(a){var b,d;return null==a&&(a={}),b=new c(this,a),this._snapshots[b.id]=b,d=b._options(),d.shutter&&this._engine_play_shutter_sound(),this._engine_capture(b,d.mirror,d.quality),b},a.prototype._snapshots={},a.prototype.show_stream=function(){return this._engine_show_stream(),this._displayed_snapshot=null,this},a.prototype.discard_all=function(){var a,b,c;this._displayed_snapshot&&this.show_stream(),c=this._snapshots;for(a in c)b=c[a],this._engine_discard(b),b._discarded=!0;return this._snapshots={},this},a.prototype._extend=function(a){var b,c,d,e,f,g;for(d=Array.prototype.slice.call(arguments,1),f=0,g=d.length;g>f;f++)if(c=d[f])for(b in c)e=c[b],a[b]=e;return a},a.prototype._debug=function(a){return this.options.on_debug?this.options.on_debug.call(this,a):void 0},a.prototype._view_width=function(){return parseInt(this.container.offsetWidth,10)},a.prototype._view_height=function(){return parseInt(this.container.offsetHeight,10)},a.prototype._display=function(a){return this._engine_display(a),this._displayed_snapshot=a},a.prototype._displayed_snapshot=null,a.prototype._upload=function(a,b,c,d){return this._engine_upload(a,b,c,d)},a.prototype._discard=function(a){return this._displayed_snapshot===a&&this.show_stream(),this._engine_discard(a),a._discarded=!0,delete this._snapshots[a.id]},a.prototype._prepared=function(){return this._is_ready=!0,this.options.on_ready?this.options.on_ready.call(this):void 0},a.prototype._got_error=function(a){return this._debug("Error - "+a),this._error_occured=a,this.options.on_error?this.options.on_error.call(this,this._error_occured):void 0},a}(),navigator.getUserMedia||(navigator.getUserMedia=navigator.webkitGetUserMedia||navigator.mozGetUserMedia||navigator.msGetUserMedia),navigator.getUserMedia&&(b=function(a){function b(){return d=b.__super__.constructor.apply(this,arguments)}return f(b,a),b.prototype._engine_init=function(){var a,b,c,d;return this._debug("Using HTML5 engine"),this.internal_container=document.createElement("div"),this.internal_container.style.width="100%",this.internal_container.style.height="100%",this.internal_container.style.position="relative",this.container.appendChild(this.internal_container),d=Math.floor(.2*this._view_height()),b=Math.floor(.2*this._view_width()),this.message=document.createElement("div"),this.message["class"]="message",this.message.style.width="100%",this.message.style.height="100%",this._add_prefixed_style(this.message,"boxSizing","border-box"),this.message.style.overflow="hidden",this.message.style.textAlign="center",this.message.style.paddingTop=""+d+"px",this.message.style.paddingBottom=""+d+"px",this.message.style.paddingLeft=""+b+"px",this.message.style.paddingRight=""+b+"px",this.message.style.position="absolute",this.message.style.zIndex=3,this.message.innerHTML="Please allow camera access when prompted by the browser.",this.internal_container.appendChild(this.message),this.video_container=document.createElement("div"),this.video_container.style.width=""+this._view_width()+"px",this.video_container.style.height=""+this._view_height()+"px",this.video_container.style.overflow="hidden",this.video_container.style.position="absolute",this.video_container.style.zIndex=1,this.internal_container.appendChild(this.video_container),this.video=document.createElement("video"),this.video.autoplay=!0,this._add_prefixed_style(this.video,"transform","scalex(-1.0)"),window.AudioContext||(window.AudioContext=window.webkitAudioContext),window.AudioContext&&this._load_shutter_sound(),a={video:{optional:[{minWidth:1280},{minWidth:640},{minWidth:480},{minWidth:360}]}},c=this,navigator.getUserMedia(a,function(a){return c._remove_message(),c.video.src=window.URL?URL.createObjectURL(a):a,c._wait_for_video_ready()},function(a){var b,d,e;b=a.code;for(d in a)if(e=a[d],"code"!==d)return c._got_error(d),void 0;return c._got_error("UNKNOWN ERROR")})},b.prototype._engine_play_shutter_sound=function(){var a;if(this.shutter_buffer)return a=this.audio_context.createBufferSource(),a.buffer=this.shutter_buffer,a.connect(this.audio_context.destination),a.start(0)},b.prototype._engine_capture=function(a,b,c){var d,e,f;return f=this._get_capture_crop(),d=document.createElement("canvas"),d.width=f.width,d.height=f.height,e=d.getContext("2d"),e.drawImage(this.video,f.x_offset,f.y_offset,f.width,f.height,0,0,f.width,f.height),a._canvas=d,a._mirror=b,a._quality=c},b.prototype._engine_display=function(a){return this.displayed_canvas&&this.internal_container.removeChild(this.displayed_canvas),this.displayed_canvas=a._canvas,this.displayed_canvas.style.width=""+this._view_width()+"px",this.displayed_canvas.style.height=""+this._view_height()+"px",this.displayed_canvas.style.top=0,this.displayed_canvas.style.left=0,this.displayed_canvas.style.position="absolute",this.displayed_canvas.style.zIndex=2,this._add_prefixed_style(this.displayed_canvas,"transform","scalex(-1.0)"),this.internal_container.appendChild(this.displayed_canvas)},b.prototype._engine_discard=function(a){return a._xhr&&a._xhr.abort(),delete a._xhr,delete a._canvas,delete a._jpeg_blob},b.prototype._engine_show_stream=function(){return this.displayed_canvas&&(this.internal_container.removeChild(this.displayed_canvas),this.displayed_canvas=null),this.video_container.style.display="block"},b.prototype._engine_upload=function(a,b,c,d){var e,f,g,h,i;return h=this,a._jpeg_blob?(this._debug("Uploading the file"),g=function(b){return delete a._xhr,a._status=b.target.status,a._response=b.target.responseText,a._status>=200&&a._status<300?a._upload_done():(a._error_message=b.target.statusText||"Unknown error",a._upload_fail())},i=new XMLHttpRequest,i.open("POST",b),i.timeout=d,c&&i.setRequestHeader("X-CSRF-Token",c),i.onload=g,i.onerror=g,i.onabort=g,i.send(a._jpeg_blob),a._xhr=i):(this._debug("Generating JPEG file"),a._mirror?(e=document.createElement("canvas"),e.width=a._canvas.width,e.height=a._canvas.height,f=e.getContext("2d"),f.setTransform(1,0,0,1,0,0),f.translate(e.width,0),f.scale(-1,1),f.drawImage(a._canvas,0,0)):e=a._canvas,e.toBlob(function(e){return a._jpeg_blob=e,h._engine_upload(a,b,c,d)},"image/jpeg",this.quality))},b.prototype._remove_message=function(){return this.message.style.display="none"},b.prototype._load_shutter_sound=function(){var a,b;if(!this.audio_context)return this.audio_context=new AudioContext,a=new XMLHttpRequest,a.open("GET",this.options.shutter_url,!0),a.responseType="arraybuffer",b=this,a.onload=function(){return b.audio_context.decodeAudioData(a.response,function(a){return b.shutter_buffer=a})},a.send()},b.prototype._wait_for_video_ready=function(){var a,b,c,d;return d=parseInt(this.video.videoWidth),c=parseInt(this.video.videoHeight),d>0&&c>0?(this.video_container.appendChild(this.video),this.video_width=d,this.video_height=c,this._debug("Camera resolution "+this.video_width+"x"+this.video_height+"px"),a=this._get_video_crop(),this.video.style.position="relative",this.video.style.width=""+a.width+"px",this.video.style.height=""+a.height+"px",this.video.style.left=""+a.x_offset+"px",this.video.style.top=""+a.y_offset+"px",this._prepared()):this._status_checks_count>100?this._got_error("Camera failed to initialize in 10 seconds"):(this._status_checks_count++,b=this,setTimeout(function(){return b._wait_for_video_ready()},100))},b.prototype._status_checks_count=0,b.prototype._add_prefixed_style=function(a,b,c){var d;return d=b.charAt(0).toUpperCase()+b.slice(1),a.style[b]=c,a.style["Webkit"+d]=c,a.style["Moz"+d]=c,a.style["ms"+d]=c,a.style["O"+d]=c},b.prototype._get_video_crop=function(){var a,b,c,d,e,f,g;return g=this._view_width(),e=this._view_height(),c=this.video_width/this.video_height,f=g/e,c>=f?(this._debug("Filling height"),d=e/this.video_height,b=Math.round(this.video_width*d),{width:b,height:e,x_offset:-Math.floor((b-g)/2),y_offset:0}):(this._debug("Filling width"),d=g/this.video_width,a=Math.round(this.video_height*d),{width:g,height:a,x_offset:0,y_offset:-Math.floor((a-e)/2)})},b.prototype._get_capture_crop=function(){var a,b,c,d,e,f;return f=this._view_width(),d=this._view_height(),c=this.video_width/this.video_height,e=f/d,c>=e?(b=Math.round(this.video_height*e),{width:b,height:this.video_height,x_offset:Math.floor((this.video_width-b)/2),y_offset:0}):(a=Math.round(this.video_width/e),{width:this.video_width,height:a,x_offset:0,y_offset:Math.floor((this.video_height-a)/2)})},b}(a),window.JpegCamera=b),c=function(){function a(a,b){this.camera=a,this.options=b,this.id=this.constructor._next_snapshot_id++}return a._next_snapshot_id=1,a.prototype._discarded=!1,a.prototype.show=function(){return this._discarded&&raise("discarded snapshot cannot be used"),this.camera._display(this),this},a.prototype.hide=function(){return this.camera.displayed_snapshot()===this&&this.camera.show_stream(),this},a.prototype.upload=function(a){var b,c;if(null==a&&(a={}),this._discarded&&raise("discarded snapshot cannot be used"),this._uploading)return this._debug("Upload already in progress"),void 0;if(this._uploading=!0,this._upload_options=a,b=this._options(),!b.api_url)throw this.camera._debug("Snapshot#upload called without valid api_url"),"Snapshot#upload called without valid api_url";return c="string"==typeof b.csrf_token&&b.csrf_token.length>0?b.csrf_token:null,this._done=!1,this._response=null,this._fail=!1,this._status=null,this._error_message=null,this.camera._upload(this,b.api_url,c,b.timeout),this},a.prototype._upload_options={},a.prototype._uploading=!1,a.prototype.done=function(a){var b;return this._discarded&&raise("discarded snapshot cannot be used"),this._upload_options.on_upload_done=a,b=this._options(),b.on_upload_done&&this._done&&b.on_upload_done.call(this,this._response),this},a.prototype._done=!1,a.prototype._response=null,a.prototype.fail=function(a){var b;return this._discarded&&raise("discarded snapshot cannot be used"),this._upload_options.on_upload_fail=a,b=this._options(),b.on_upload_fail&&this._fail&&b.on_upload_fail.call(this,this._status,this._error_message,this._response),this},a.prototype._fail=!1,a.prototype._status=null,a.prototype._error_message=null,a.prototype.discard=function(){return this.camera._discard(this),void 0},a.prototype._options=function(){return this.camera._extend({},this.camera.options,this.options,this._upload_options)},a.prototype._upload_done=function(){var a;return this.camera._debug("Upload completed"),this._uploading=!1,this._done=!0,a=this._options(),a.on_upload_done?a.on_upload_done.call(this,this._response):void 0},a.prototype._upload_fail=function(){var a;return this.camera._debug("Upload failed with status "+this._status),this._uploading=!1,this._fail=!0,a=this._options(),a.on_upload_fail?a.on_upload_fail.call(this,this._status,this._error_message,this._response):void 0},a}()}.call(this);