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easily fast forward video to the high time.
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// ==UserScript==
// @name Free your hand - Pornhub
// @namespace
// @version 0.3.3
// @license MPL-2.0
// @description easily fast forward video to the high time.
// @author c4r
// @match https://www.pornhub.com/view_video.php?viewkey=*
// @require https://code.jquery.com/jquery-latest.js
// @grant none
// ==/UserScript==
(function() {
'use strict';
function merge(left, right) { //合并两个子数组
var result = [];
while (left.length && right.length) {
var item = left[0] >= right[0] ? left.shift() : right.shift();//注意:判断的条件是小于或等于,如果只是小于,那么排序将不稳定.
result.push(item);
}
return result.concat(left.length ? left : right);
}
function mergeSort(array) { //采用自上而下的递归方法
var length = array.length;
if (length < 2) {
return array;
}
var m = (length >> 1),
left = array.slice(0, m),
right = array.slice(m); //拆分为两个子数组
return merge(mergeSort(left), mergeSort(right));//子数组继续递归拆分,然后再合并
}
function filter_av(array_y){
let av_n = Math.floor(array_y.length/100.);
if(av_n < 5) {
av_n = 5;
}
if(av_n%2 == 0){
av_n = av_n +1;
}
let array_r = new Array(array_y.length);
for(let i=0;i<array_y.length;i++){
if(i< (av_n-1)/2){
array_r[i]= array_y[i];
}else if(array_y.length-i <= (av_n-1)/2 ){
array_r[i]= array_y[i];
}else{
array_r[i] = 0;
for(let j=0;j<av_n;j++){
array_r[i] = array_r[i] + array_y[i +j - (av_n-1)/2];
}
array_r[i] = array_r[i] / av_n;
}
}
return array_r;
}
function find_peak(array_y){
let array_sort = array_y;
mergeSort(array_sort);
let average = array_sort[Math.floor(array_sort.length*0.7)];
// average = 0;
console.log("av : " + average);
let peek = new Array();
if(array_y[1]< array_y[0] && array_y[0] > average){
peek.push(0);
}
for(let i=1;i<array_y.length-1;i++){
if(array_y[i-1]< array_y[i] && array_y[i+1]<= array_y[i] && array_y[i] > average){
// console.log(peek.length, i,peek[peek.length-1], array_y[i]);
// if(peek.length == 0 || (i - peek[peek.length-1] > array_y.length/40) || (array_y[i] > array_y[peek[peek.length-1]]) ){
peek.push(i);
// }
}
}
if(array_y[array_y.length-2]< array_y[array_y.length-1] && array_y[array_y.length-1] > average ){
peek.push(array_y.length-1);
}
// console.log(peek)
// console.log("============")
// console.log(array_y.length/40)
// console.log("============")
// 去除多余
let peek_del = new Array();
for(let i=0;i<peek.length;i++){
let toSave = true
for(let j=0; j<peek.length;j++){
// 红点间距最短为视频时长40等分, 在前后40等分中取最高的
if(toSave && i != j && Math.abs(peek[j] - peek[i]) < array_y.length/40 && array_y[peek[i]] <= array_y[peek[j]] ){
toSave = false
// console.log('del-----')
// console.log(i,peek[i],array_y[peek[i]])
// console.log(j,peek[j],array_y[peek[j]])
}
}
if(toSave){
peek_del.push(peek[i])
// console.log('save-----')
// console.log(i,peek[i],array_y[peek[i]])
}
}
return peek_del;
}
function mark(array_y, duration){
let objBar = $("div.mhp1138_progressOverflow");
// console.log(objBar);
let markP1 = "<div data-tag=\"HighTime\" class=\"mhp1138_actionTag\" style=\"left: ";
let markP3 = "%; width: 0.178995%;\"></div>";
for(let i=0;i<array_y.length;i++){
// console.log(i);
$(objBar).append(markP1 + (array_y[i]/duration*100.).toString() + markP3);
}
$(objBar).find("div.mhp1138_actionTag").each((index, element) => {
if($(element).attr("data-tag") == "HighTime"){
$( element).css("background-color","red");
}
});
}
function actionVideo(){
let str_point = $("polygon").attr("points");
let str_array_point=str_point.split(" ");
// console.log(str_array_point.length);
// console.log(str_array_point[str_array_point.length-1]);
// 得到数组
let len_video=parseFloat(str_array_point[str_array_point.length-2].split(",")[0]);
console.log("video :" + len_video);
let array_point= new Array();
for (i=0;i< str_array_point.length -1; i++){
let point = str_array_point[i].split(",");
let x = parseFloat(point[0]);
let y = -parseFloat(point[1])+100.;
// console.log(x,y);
array_point.push([x,y]);
}
let nodevideo = $("video").get(0);
let len_array = Math.floor(nodevideo.duration);
console.log("debug : len_array : ", len_array)
if(len_array % 2 == 0){
len_array = len_array +1;
}
let array_eq_point = new Array(len_array);
let dis=len_video/(len_array-1);
let array_y = new Array();
let array_x = new Array();
for(i=0;i<len_array;i++){
let x = dis*(i);
let y = 0.;
let xInRange= false;
for(let j=0;j<array_point.length;j++){
if((array_point[j])[0] > x ){
y = ((array_point[j])[1]-(array_point[j-1])[1])/((array_point[j])[0]-(array_point[j-1])[0])*(x-(array_point[j-1])[0])+(array_point[j-1])[1];
break;
}
}
array_y.push(y);
array_x.push(x);
// console.log(i, x,y, (array_point[i]) )
}
let array_filter_y = filter_av(array_y);
// console.log("====");
// console.log(array_filter_y);
// console.log("====");
// <============得到峰值对应的index============>
let array_peek_index = find_peak(array_filter_y);
console.log("时长 : " + nodevideo.duration);
// 得到对应的时间
for(let i=0;i<array_peek_index.length;i++){
array_peek_index[i] = array_peek_index[i] * dis/len_video * nodevideo.duration;
}
// console.log("peak : " + array_peek_index.length);
// 做标记
mark(array_peek_index,nodevideo.duration);
// console.log(array_peek_index);
// 当前播放进度
// console.log(nodevideo.currentTime);
$(document).keydown(function(event){
if(event.keyCode == 190){ // 前进
for(let i=0;i<array_peek_index.length;i++){
if(array_peek_index[i]>nodevideo.currentTime){
nodevideo.currentTime = array_peek_index[i];
break;
}
}
}else if (event.keyCode == 188){ // 后退
for(let i=array_peek_index.length-1;i>0;i--){
if(array_peek_index[i]<nodevideo.currentTime){
if( i == 0 ){
if((nodevideo.currentTime - array_peek_index[i])< (array_peek_index[i+1]-array_peek_index[i])/3.){
nodevideo.currentTime = 0;
break;
}else{
nodevideo.currentTime = array_peek_index[i];
break;
}
}else if(i == array_peek_index.length-1){
if((nodevideo.currentTime - array_peek_index[i])< (nodevideo.duration-array_peek_index[i])/3.){
nodevideo.currentTime = array_peek_index[i-1];
break;
}else{
nodevideo.currentTime = array_peek_index[i];
break;
}
}else{
if((nodevideo.currentTime - array_peek_index[i])< (array_peek_index[i+1]-array_peek_index[i])/3.){
nodevideo.currentTime = array_peek_index[i-1];
break;
}else{
nodevideo.currentTime = array_peek_index[i];
break;
}
}
}
}
}else if (event.keyCode >= 48 && event.keyCode <= 57){ // 数字键
nodevideo.currentTime = (event.keyCode-48) * nodevideo.duration/10.
}
});
}
$( document ).ready(function() {
console.log( "ready!" );
// 准备等分数组
// if(array_point.length %2 == 0){
// let len_array = array_point.length+1;
// }else{
// let len_array = array_point.length;
// }
console.log("check video : " , $("video").get(0).duration)
if(isNaN($("video").get(0).duration) ){
console.log("wait load")
$("video").on('loadedmetadata', function() {
actionVideo()
})
}else{
console.log("load directly")
actionVideo()
}
});
})();