canvas 视频音乐播放器

var play_nor_img_path = 'images/play_btn_n.png'; //播放按钮 正常时   60x60 px
var play_sec_img_path = "images/play_btn_s.png";//播放按钮 选中时
var play_clc_img_path = "images/play_btn_c.png";//播放按钮 单击时
var pause_nor_img_path = 'images/pause_btn_n.png';//暂停按钮 正常时
var pause_sec_img_path = "images/pause_btn_s.png";//暂停按钮 选中时
var pause_clc_img_path = "images/pause_btn_c.png";//暂停按钮 单击时
var main_bg = "images/main_UI_bg.png";  //背景图 1920x930 px;
var logo ="images/logo.webm";
var logop;
var pause_icon;
var songTime;
var nowSongTime;
var lunt_update = false;function player(path=""){window.audio=[]; var mobj;var isMovie = getFiletype(path);window.audio.isMovie = isMovie;//获取对象LEFT 总宽度function getpos(e){var obj = e;var left = obj.offsetLeft;while(obj = obj.offsetParent){left+= obj.offsetLeft;}return left;}if(isMovie == false){ //是否视频  可以改为自动判断拓展名 mobj = new Audio(path); logop = document.createElement("video");document.body.appendChild(logop);logop.style.display="none";logop.src=logo;logop.play();window.setInterval(function(){if(logop.ended == true){logop.play();}},100);}else{var mobj_style="display:none;"mobj = document.createElement("video");document.body.appendChild(mobj);mobj.setAttribute("style",mobj_style);mobj.src=path;}audio.id=mobj;setWindow();var count = 0;var inc_lunt=document.getElementById("inc_lunt");var main_lunt = document.getElementById("main_lunt");mobj.play();// 设置播放按钮if(mobj.ended == true || mobj.paused == true){play_icon.style.background="url('"+play_nor_img_path+"')"} else {play_icon.style.background="url('"+pause_nor_img_path+"')"}//获取目标参数;//手动设置播放进度main_lunt.onclick = function (e=window.event){ //取得单位位置所处时间 乘以 鼠标所在相对于进度条的位置console.info(e.clientX+","+e.clientY+":"+getInc_pos(songTime,700,e.clientX - getpos(inc_lunt)));inc_lunt.style.width = (e.clientX - inc_lunt.offsetLeft)+"px";mobj.currentTime =getInc_pos(songTime,700,e.clientX - getpos(inc_lunt));}mobj.addEventListener("play",function (){start_update_lunt()//循环绘制视频var t3 = window.setInterval(function (){if(mobj.ended == true || mobj.paused == true){ //播放停止时移除计时器clearInterval(t3);}else{try{if(window.audio.isMovie == false){window.audio.rect.drawImage(logop,0,0,900,490); //绘制一帧}else {window.audio.rect.drawImage(mobj,0,0,900,490); //绘制一帧}}catch(e){console.error(e.message);//报错 }}},100);},false);//player 代码结束
}
function setWindow(){//设置窗口 及UIvar musicWinObj = document.getElementsByClassName("music_win")[0];var nodeValue="";nodeValue += "position: absolute;";nodeValue += "width: 900px;";nodeValue += "height:550px;";nodeValue += "margin-top: -275px;";nodeValue += "margin-left: -450px;";nodeValue += "left: 50%;";nodeValue += "top:50%;";nodeValue += "background:#C3C3C3; z-index:1";nodeValue += "";musicWinObj.setAttribute("style",nodeValue);var h_data='';h_data += '<div style="position: absolute; width: 900px;height: 60px; background: #F0F0F0;bottom: 0px; margin-left: -450px; left:50%;">';h_data += '<div style="position: absolute; width: 120px; height: 60px; margin-top: -30px;  top:50%;">';h_data += '<div id="play_icon" style=" position: absolute; width: 60px; height: 60px;margin-left: -30px;left:50%; margin-top: -30px;  top:50%;"></div><!--播放按钮-->';h_data += '</div><!--播放按钮层 -->';h_data += '<div id="main_lunt" style="width: 700px;height: 10px; border: #000000 1px solid; margin-left: -350px; left:55%;position: absolute; margin-top: -5px; top:50%;">';h_data += '<div id="inc_lunt" style="height: 10px; background: #000000;left:0%;position: absolute; margin-top: -5px; top:50%;"></div><!--动态进度条-->';h_data += '</div><div style="border-radius:90deg;"></div><!--进度条-->';h_data += '</div>';   musicWinObj.innerHTML=h_data;//创建视频绘画区var vid_win = document.createElement("canvas");var vid_win_style = "width: 900px; height: 490px; position:relative;  margin-left: -450px; top: 0px; left: 50%; background: #000000;";vid_win.setAttribute("style",vid_win_style);vid_win.style.display="block";musicWinObj.appendChild(vid_win);vid_win.width="900";vid_win.height="490";window.audio.rect = vid_win.getContext("2d"); //取得绘图上下文//设置播放按钮play_icon = document.getElementById("play_icon");play_icon.style.background="url('"+play_nor_img_path+"')"var main_bg_style = '';main_bg_style +='position:absolute; width:1920px; height:960px; margin-left:-960px; left:50%; margin-top:-480px; top:50%; z-index:0';//创建背景区var main_bg_win = document.createElement("div");document.body.appendChild(main_bg_win); main_bg_win.setAttribute("style",main_bg_style);main_bg_win.style.background="url('"+main_bg+"')";vid_win.ondblclick =function (){  //双击绘图层 canvas 最大化if(main_bg_win.style.display != "none" ){main_bg_win.style.display = "none";var full_scr_style = "width: 1920px; height: 960px; position:absolute;  margin-left: -960px; margin-top: -475px; top: 50%; left: 50%; background: #000000; display:block;z-index:20";vid_win.setAttribute("style",full_scr_style);}else{main_bg_win.style.display = "block";vid_win.setAttribute("style",vid_win_style);}}//事件绑定   移入移出事件play_icon.onmousemove=function (){if(audio.id.ended == true || audio.id.paused == true){play_icon.style.background="url('"+play_sec_img_path+"')"} else {play_icon.style.background="url('"+pause_sec_img_path+"')"}}play_icon.onmouseover=function (){if(audio.id.ended == true || audio.id.paused == true){play_icon.style.background="url('"+play_sec_img_path+"')"} else {play_icon.style.background="url('"+pause_sec_img_path+"')"}}play_icon.onmouseout=function (){if(audio.id.ended == true || audio.id.paused == true){play_icon.style.background="url('"+play_nor_img_path+"')"} else {play_icon.style.background="url('"+pause_nor_img_path+"')"}}//播放暂停及图标设置play_icon.onmousedown=function(){  if(audio.id.ended == true || audio.id.paused == true){play_icon.style.background="url('"+play_clc_img_path+"')"audio.id.play();start_update_lunt();} else {play_icon.style.background="url('"+pause_clc_img_path+"')"audio.id.pause();}}play_icon.onmouseup=function(){if(audio.id.ended == true || audio.id.paused == true){play_icon.style.background="url('"+play_nor_img_path+"')"} else {play_icon.style.background="url('"+pause_nor_img_path+"')"}}}
function getInc_pos(maxnum,max_t,pos){ //进度条比例计算return pos*(maxnum/max_t);
}function getInc_pos_f(maxnum,max_t,pin){ //没有用的 函数return pin*(max_t/maxnum);
}
function start_update_lunt(){if(lunt_update == false){lunt_update = true;var t = setInterval(function(timeV=t){songTime = window.audio.id.duration;nowSongTime = window.audio.id.currentTime;inc_lunt.style.width = getInc_pos(100,songTime,nowSongTime)+"%"; //设置进度条if(window.audio.id.ended == true){lunt_update = false;console.error("end!");clearInterval(t);//停止时移除定时器}       },100)}
}function getFiletype(str_path){/*var end5 = str_path.substr(str_path.length-6,str_path.length);console.info(end5);var pos = end5.indexOf(".");console.info(pos);var end5len = end5.length;console.info(end5len);var type = end5.substr(pos,end5len-1);console.info(type);*/var pos = str_path.indexOf(".");var str_path_len = str_path.length;var type = str_path.substr(pos,str_path_len-1);console.log(type);var video = new Array(10);var music = new Array(10);video = ["mp4","avi","3gp","webm","mkv","mpg","wmv","vob","flv"];music = ["mp3","wav","ogg","m4a","amr","m4r","acc","wave","flac"];for(var i =0;i<10;i++){if(type == "."+video[i]){return true;}if(type == "."+music[i]){return false;}}return false;
}