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亚伦影音工作室 发表于 2023-3-24 23:11

车载串烧【首首动听】

<style>
#papa {
margin: 10px -300px;
width: 1164px;
height: 620px;
background: gray url('') center/cover no-repeat;
box-shadow: 3px 3px 0px #cccccc;
position: relative;
z-index: 1;
--state: paused;
}
#dt{position: absolute;top:3%; left:22%;z-index: 2;
width:40px;
height:40px; transition: .3s all ease;/*一定要加上不然看着突兀*/}

#mplayer {
width: 80px;
height: 160px;
left: 10px;
bottom: 10px;
background: black;
border-radius: 8px;
box-shadow: 6px 4px 12px snow;
transition: .6s;
position: absolute;
pointer-events: none;
}
#mplayer::before, #mplayer::after {
position: absolute;
content: '';
}
#mplayer::before {
width: 30px;
height: 30px;
left: calc(50% - 15px);
bottom: 15px;
border-radius: 50%;
background: #333;
pointer-events: auto;
cursor: pointer;
border: 2px solid snow;
box-shadow: 0 0 10px blue;
animation: flash .3s infinite alternate var(--state);
}
#mplayer::after {
content:attr(data-tt);
top: 6px; right: 6px; bottom: 60px; left: 6px;
background: #333;
color: lightblue;
font-size: 14px;
text-align: center;
padding: 4px;
white-space:pre;
}
#mplayer:active { transform: rotate(5deg); }
#vid { display: none; }
#canv {
position: absolute;
display: block;
right: 0px;
top: 0px;
border-radius: 0%;
opacity: 1;
}
@keyframes flash {
to { box-shadow: 0 0 30px white; }
}
</style>

<div id="papa">

<canvas id="canv"></canvas>
<divid="testBtn"><div id="mplayer" data-tt="HCPlayer

00:00
00:00"><div id='dt'><img id="testImg" src="https://www.z4a.net/images/2022/06/23/123.gif" width="100%" height="100%"></div></div></div>
<div data-lrc="亚伦影音工作室" id="lrc">亚伦影音工作室</div>
</div>
<audio id="aud" src="https://p4.t57.cn:8399/2019/xc/1/BQL.m4a" autoplay loop></audio>
<video id="vid" src="https://img-baofun.zhhainiao.com/pcwallpaper_ugc/preview/4d08f15c741064b8607b06d5738af48f_preview.mp4" loop autoplay muted></video>

<script>
let ctx = canv.getContext('2d');
let ww = canv.width = 1164, hh = canv.height =620;
let loop = () => {ctx.drawImage(vid, 0, 0, ww, hh);if(!vid.paused) {requestAnimationFrame(loop);return;}}
let toMin = (val) => {if (!val) return '00:00';val = Math.floor(val);let min = parseInt(val / 60),sec = parseFloat(val % 60);if (min < 10) min = '0' + min;if (sec < 10) sec = '0' + sec;return min + ':' + sec;};
let mState = () => aud.paused ? (papa.style.setProperty('--state', 'paused'),vid.pause()) : (papa.style.setProperty('--state', 'running'),vid.play());
vid.playbackRate = 0.5;
vid.addEventListener('play', loop, false);
aud.addEventListener('play', () => mState());
aud.addEventListener('pause', () => mState());
aud.addEventListener('timeupdate', () => mplayer.dataset.tt = '.\n\n' + toMin(aud.duration) + '\n' + toMin(aud.currentTime));
mplayer.addEventListener('click', () => aud.paused ? aud.play() : aud.pause());
</script>
<style type="text/css">#lrc {
--state: paused;
--motion: cover2;
--tt: 2s;
--bg: linear-gradient(180deg, #880000, #880000);
position: absolute;z-index: 4;
left: 50%;
transform: translate(-50%);
top: 85%;
font:normal 3em 华文隶书;
color: #000078;
white-space: pre;
-webkit-background-clip: text;
filter:drop-shadow(#FFFFFF 1px 0 0)drop-shadow(#FFFFFF 0 1px 0)drop-shadow(#FFFFFF -1px 0 0) drop-shadow(#FFFFFF 0 -1px0);
}
#lrc::before {
position: absolute;
content: attr(data-lrc);
width: 20%;
height: 100%;
color: transparent;
overflow: hidden;
white-space: pre;
background: var(--bg);

-webkit-background-clip: text;
animation: var(--motion) var(--tt) linear forwards;
animation-play-state: var(--state);
}
@keyframes cover1 { from { width: 0; } to { width: 100%; } }
@keyframes cover2 { from { width: 0; } to { width: 100%; } }
</style>
<script >
(function() {
/*原始lrc歌词*/
let lrcStr = `
车载音乐串烧
没有填词
首首动听。。。
`;

/*变量：mKey - 当前歌词索引；mFlag ：调用关键帧动画索引；averAdd ：平均值补偿*/
let mKey = 0, mFlag = true, averAdd = 0.3;

/*函数：获取每句歌词用时，歌词用时若超过平均值则取平均值，最后一句歌词则取平均值*/
let lrcTime = (ar) => {
let tmpAr = [];
for(j = 0; j <ar.length - 1; j ++) {
if(j !== ar.length - 1) tmpAr = parseFloat((ar - ar).toFixed(1));
}
let aver = parseInt(tmpAr.reduce((a,b) => a + b) / (tmpAr.length - 1)) + averAdd;
tmpAr.push(aver);
tmpAr.forEach((item,key) => {
ar = item > aver ? aver : item;
});
return ar;
};

/*函数：从原始lrc歌词获取信息并存入 n*3 数组*/
let getLrcAr = (text) => {
let lrcAr = [];
let calcRule = ;
for(x of text.split('\n')) {
let ar = [];
let re = /\d+[\.:]\d+([\.:]\d+)?/g;
let geci = x.replace(re,'');
if(geci) {
geci = geci.replace(/[\[\]\'\"\t,]s?/g,'');
let time = x.match(re);
if(time != null) {
for(y of time) {
let tmp = y.match(/\d+/g);
let sec = 0;
for(z in tmp) sec += tmp * calcRule;
ar = ;
lrcAr.push(ar);
}
}
}
}
lrcAr.sort((a,b)=> a - b);
return(lrcTime(lrcAr));
};

/*函数：模拟显示同步歌词*/
let showLrc = (time) => {
let name = mFlag ? 'cover1' : 'cover2';
lrc.innerHTML = lrcAr;
lrc.dataset.lrc = lrcAr;
lrc.style.setProperty('--motion', name);
lrc.style.setProperty('--tt', time + 's');
lrc.style.setProperty('--state', 'running');
mKey += 1;
mFlag = !mFlag;
};

/*函数：处理当前歌词索引 mKey*/
let calcKey = () => {
for (j = 0; j < lrcAr.length; j++) {
if (aud.currentTime <= lrcAr) {
mKey = j - 1;
break;
}
}
if (mKey < 0) mKey = 0;
if (mKey > lrcAr.length - 1) mKey = lrcAr.length - 1;
let time = lrcAr - (aud.currentTime - lrcAr);
showLrc(time);
};

/*格式化时间信息*/
let toMin = (val) => {
if (!val) return '00:00';
val = Math.floor(val);
let min = parseInt(val / 60),
sec = parseFloat(val % 60);
if (min < 10) min = '0' + min;
if (sec < 10) sec = '0' + sec;
return min + ':' + sec;
}

/*函数：关键帧动画状态切换*/
let mState = () => aud.paused ? (lrc.style.setProperty('--state','paused'),mplayer.style.animationPlayState = 'paused') : (lrc.style.setProperty('--state','running'),mplayer.style.animationPlayState = 'running');

/*监听播放进度*/
aud.addEventListener('timeupdate', () => {
for (j = 0; j < lrcAr.length; j++) {
if (aud.currentTime >= lrcAr) {
cKey = j;
if (mKey === j) showLrc(lrcAr);
else continue;
}
}
});
aud.addEventListener('pause', () => mState());/*监听暂停事件*/
aud.addEventListener('play', () => mState());/*监听播放事件*/
aud.addEventListener('seeked', () => calcKey());/*监听查询事件*/
let lrcAr = getLrcAr(lrcStr); /*获得歌词数组*/
})();
</script>
<script>
if ('getContext' in document.createElement('canvas')) {
HTMLImageElement.prototype.play = function() {
   if (this.storeCanvas) {
         // 移除存储的canvas
         this.storeCanvas.parentElement.removeChild(this.storeCanvas);
         this.storeCanvas = null;
         // 透明度还原
         image.style.opacity = '';
   }
   if (this.storeUrl) {
         this.src = this.storeUrl;
   }
};
HTMLImageElement.prototype.stop = function() {
   var canvas = document.createElement('canvas');
   // 尺寸
   var width = this.width, height = this.height;
   if (width && height) {
         // 存储之前的地址
         if (!this.storeUrl) {
            this.storeUrl = this.src;
         }
         // canvas大小
         canvas.width = width;
         canvas.height = height;
         // 绘制图片帧（第一帧）
         canvas.getContext('2d').drawImage(this, 0, 0, width, height);
         // 重置当前图片
         try {
            this.src = canvas.toDataURL("image/gif");
         } catch(e) {
            // 跨域
            this.removeAttribute('src');
            // 载入canvas元素
            canvas.style.position = 'absolute';
            // 前面插入图片
            this.parentElement.insertBefore(canvas, this);
            // 隐藏原图
            this.style.opacity = '0';
            // 存储canvas
            this.storeCanvas = canvas;
         }
   }
};
}
var image = document.getElementById("testImg"),
button = document.getElementById("testBtn");

if (image && button) {
button.onclick = function() {
   if (this.value == '') {
      image.play();
         this.value = '.';
   } else {
         image.stop();
         this.value = '';
   }
};
}

</script>

庶民发表于 2023-3-25 06:13

感谢你带给我们的欢乐！
好思维，有创意！

红影发表于 2023-3-26 08:46

在这么优美的背景里，线上这么多的歌曲，真是好享受。欣赏亚伦老师好帖{:4_187:}

红影发表于 2023-3-26 08:52

音乐很好听，不过里面第一首结束的地方有语音广告呢。找来的音乐有时会有这样的问题。

梦油发表于 2023-3-26 09:23

好美的画面啊。

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