1113 lines
41 KiB
TypeScript
1113 lines
41 KiB
TypeScript
|
||
import Debug from '../../conf/Debug';
|
||
import EdgeDetect from './edge-detect/EdgeDetect';
|
||
import EdgeStatus from './edge-detect/enums/EdgeStatusEnum';
|
||
import EdgeDetectPrimaryDirection from './edge-detect/enums/EdgeDetectPrimaryDirectionEnum';
|
||
import EdgeDetectQuality from './edge-detect/enums/EdgeDetectQualityEnum';
|
||
import GuardLine from './GuardLine';
|
||
// import DebugCanvas from './DebugCanvas';
|
||
import VideoAlignmentType from '../../../common/enums/VideoAlignmentType.enum';
|
||
import AspectRatioType from '../../../common/enums/AspectRatioType.enum';
|
||
import {sleep} from '../Util';
|
||
import BrowserDetect from '../../conf/BrowserDetect';
|
||
import Logger from '../Logger';
|
||
import VideoData from '../video-data/VideoData';
|
||
import Settings from '../Settings';
|
||
|
||
enum VideoPlaybackState {
|
||
Playing,
|
||
Paused,
|
||
Ended,
|
||
Error
|
||
}
|
||
|
||
class ArDetector {
|
||
logger: Logger;
|
||
conf: VideoData;
|
||
video: HTMLVideoElement;
|
||
settings: Settings;
|
||
|
||
guardLine: GuardLine;
|
||
edgeDetector: EdgeDetect;
|
||
|
||
setupTimer: any;
|
||
sampleCols: any[];
|
||
sampleLines
|
||
|
||
canFallback: boolean = true;
|
||
fallbackMode: boolean = false;
|
||
|
||
blackLevel: number;
|
||
|
||
arid: string;
|
||
|
||
// ar detector starts in this state. running main() sets both to false
|
||
_paused: boolean;
|
||
_halted: boolean = true;
|
||
_exited: boolean = true;
|
||
|
||
private manualTickEnabled: boolean;
|
||
_nextTick: boolean;
|
||
canDoFallbackMode: boolean = false;
|
||
|
||
// helper objects
|
||
private animationFrameHandle: any;
|
||
private attachedCanvas: HTMLCanvasElement;
|
||
canvas: HTMLCanvasElement;
|
||
private blackframeCanvas: HTMLCanvasElement;
|
||
private context: CanvasRenderingContext2D;
|
||
private blackframeContext: CanvasRenderingContext2D;
|
||
private canvasScaleFactor: number;
|
||
private detectionTimeoutEventCount: number;
|
||
canvasImageDataRowLength: number;
|
||
private noLetterboxCanvasReset: boolean;
|
||
private detectedAr: any;
|
||
private canvasDrawWindowHOffset: number;
|
||
private sampleCols_current: number;
|
||
private timers = {
|
||
nextFrameCheckTime: Date.now()
|
||
}
|
||
private status = {
|
||
lastVideoStatus: VideoPlaybackState.Playing
|
||
}
|
||
|
||
//#region debug variables
|
||
private performanceConfig = {
|
||
sampleCountForAverages: 32
|
||
}
|
||
private performance = {
|
||
animationFrame: {
|
||
lastTime: 0,
|
||
currentIndex: 0,
|
||
sampleTime: []
|
||
},
|
||
drawImage: {
|
||
currentIndex: 0,
|
||
sampleTime: [],
|
||
},
|
||
getImageData: {
|
||
currentIndex: 0,
|
||
sampleTime: [],
|
||
},
|
||
aard: {
|
||
currentIndex: 0,
|
||
sampleTime: [],
|
||
}
|
||
};
|
||
|
||
//#endregion
|
||
|
||
//#region getters
|
||
get defaultAr() {
|
||
const ratio = this.video.videoWidth / this.video.videoHeight;
|
||
if (isNaN(ratio)) {
|
||
return undefined;
|
||
}
|
||
return ratio;
|
||
}
|
||
|
||
//#endregion getters
|
||
|
||
//#region debug getters
|
||
|
||
/**
|
||
* We get one animation frame per this many ms. This means that our autodetection
|
||
* stuff must run in less than this many ms. This valuz is averaged out over multiple
|
||
* samples for better accuracy.
|
||
*
|
||
* Returns value in ms.
|
||
*
|
||
* A very important caveat: if autodetection takes up too much time, it WILL artificially
|
||
* increase time budget. Therefore, you should use (and firstly even implement) getTimeBudget()
|
||
* that turns off autodetection for a second or so to gather accurate timing info.
|
||
*/
|
||
get eyeballedTimeBudget() {
|
||
let sum;
|
||
for (let i = 0; i < this.performance.animationFrame.sampleTime.length; i++) {
|
||
sum += this.performance.animationFrame.sampleTime[i];
|
||
}
|
||
|
||
return sum / this.performance.animationFrame.sampleTime.length;
|
||
}
|
||
|
||
/**
|
||
* Converts time budget (eyeballed) into actual framerate. Since eyeballed time budget rises
|
||
* if our autodetection takes too long, it's still good enough for calculating framerate
|
||
*/
|
||
get fps() {
|
||
return 1000 / this.eyeballedTimeBudget;
|
||
}
|
||
|
||
//#endregion
|
||
|
||
//#region lifecycle
|
||
constructor(videoData){
|
||
this.logger = videoData.logger;
|
||
this.conf = videoData;
|
||
this.video = videoData.video;
|
||
this.settings = videoData.settings;
|
||
|
||
this.sampleCols = [];
|
||
|
||
this.blackLevel = this.settings.active.arDetect.blackbar.blackLevel;
|
||
|
||
this.arid = (Math.random()*100).toFixed();
|
||
|
||
// we can tick manually, for debugging
|
||
this.logger.log('info', 'init', `[ArDetector::ctor] creating new ArDetector. arid: ${this.arid}`);
|
||
}
|
||
|
||
init(){
|
||
this.logger.log('info', 'init', `[ArDetect::init] <@${this.arid}> Initializing autodetection.`);
|
||
|
||
try {
|
||
if (this.settings.canStartAutoAr()) {
|
||
this.setup();
|
||
} else {
|
||
throw "Settings prevent autoar from starting"
|
||
}
|
||
} catch (e) {
|
||
this.logger.log('error', 'init', `%c[ArDetect::init] <@${this.arid}> Initialization failed.`, _ard_console_stop, e);
|
||
}
|
||
}
|
||
|
||
setup(cwidth?: number, cheight?: number){
|
||
this.logger.log('info', 'init', `[ArDetect::setup] <@${this.arid}> Starting autodetection setup.`);
|
||
//
|
||
// [-1] check for zero-width and zero-height videos. If we detect this, we kick the proverbial
|
||
// can some distance down the road. This problem will prolly fix itself soon. We'll also
|
||
// not do any other setup until this issue is fixed
|
||
//
|
||
if (this.video.videoWidth === 0 || this.video.videoHeight === 0 ){
|
||
this.logger.log('warn', 'debug', `[ArDetect::setup] <@${this.arid}> This video has zero width or zero height. Dimensions: ${this.video.videoWidth} × ${this.video.videoHeight}`);
|
||
|
||
this.scheduleInitRestart();
|
||
return;
|
||
}
|
||
|
||
//
|
||
// [0] initiate "dependencies" first
|
||
//
|
||
|
||
this.guardLine = new GuardLine(this);
|
||
this.edgeDetector = new EdgeDetect(this);
|
||
// this.debugCanvas = new DebugCanvas(this);
|
||
|
||
|
||
//
|
||
// [1] initiate canvases
|
||
//
|
||
|
||
if (!cwidth) {
|
||
cwidth = this.settings.active.arDetect.canvasDimensions.sampleCanvas.width;
|
||
cheight = this.settings.active.arDetect.canvasDimensions.sampleCanvas.height;
|
||
}
|
||
|
||
if (this.canvas) {
|
||
this.canvas.remove();
|
||
}
|
||
if (this.blackframeCanvas) {
|
||
this.blackframeCanvas.remove();
|
||
}
|
||
|
||
// things to note: we'll be keeping canvas in memory only.
|
||
this.canvas = document.createElement("canvas");
|
||
this.canvas.width = cwidth;
|
||
this.canvas.height = cheight;
|
||
this.blackframeCanvas = document.createElement("canvas");
|
||
this.blackframeCanvas.width = this.settings.active.arDetect.canvasDimensions.blackframeCanvas.width;
|
||
this.blackframeCanvas.height = this.settings.active.arDetect.canvasDimensions.blackframeCanvas.height;
|
||
|
||
this.context = this.canvas.getContext("2d");
|
||
this.blackframeContext = this.blackframeCanvas.getContext("2d");
|
||
|
||
|
||
// do setup once
|
||
// tho we could do it for every frame
|
||
this.canvasScaleFactor = cheight / this.video.videoHeight;
|
||
|
||
|
||
//
|
||
// [2] determine places we'll use to sample our main frame
|
||
//
|
||
|
||
let ncol = this.settings.active.arDetect.sampling.staticCols;
|
||
let nrow = this.settings.active.arDetect.sampling.staticRows;
|
||
|
||
let colSpacing = this.canvas.width / ncol;
|
||
let rowSpacing = (this.canvas.height << 2) / nrow;
|
||
|
||
this.sampleLines = [];
|
||
this.sampleCols = [];
|
||
|
||
for(let i = 0; i < ncol; i++){
|
||
if(i < ncol - 1)
|
||
this.sampleCols.push(Math.round(colSpacing * i));
|
||
else{
|
||
this.sampleCols.push(Math.round(colSpacing * i) - 1);
|
||
}
|
||
}
|
||
|
||
for(let i = 0; i < nrow; i++){
|
||
if(i < ncol - 5)
|
||
this.sampleLines.push(Math.round(rowSpacing * i));
|
||
else{
|
||
this.sampleLines.push(Math.round(rowSpacing * i) - 4);
|
||
}
|
||
}
|
||
|
||
//
|
||
// [3] detect if we're in the fallback mode and reset guardline
|
||
//
|
||
|
||
if (this.fallbackMode) {
|
||
this.logger.log('warn', 'debug', `[ArDetect::setup] <@${this.arid}> WARNING: CANVAS RESET DETECTED/we're in fallback mode - recalculating guardLine`, "background: #000; color: #ff2");
|
||
// blackbar, imagebar
|
||
this.guardLine.reset();
|
||
}
|
||
|
||
//
|
||
// [4] see if browser supports "fallback mode" by drawing a small portion of our window
|
||
//
|
||
|
||
try {
|
||
(this.blackframeContext as any).drawWindow(window,0, 0, this.blackframeCanvas.width, this.blackframeCanvas.height, "rgba(0,0,128,1)");
|
||
this.canDoFallbackMode = true;
|
||
} catch (e) {
|
||
this.canDoFallbackMode = false;
|
||
}
|
||
|
||
//
|
||
// [5] do other things setup needs to do
|
||
//
|
||
|
||
this.detectionTimeoutEventCount = 0;
|
||
this.resetBlackLevel();
|
||
|
||
// if we're restarting ArDetect, we need to do this in order to force-recalculate aspect ratio
|
||
this.conf.resizer.setLastAr({type: AspectRatioType.Automatic, ratio: this.defaultAr});
|
||
|
||
this.canvasImageDataRowLength = cwidth << 2;
|
||
this.noLetterboxCanvasReset = false;
|
||
|
||
if (this.settings.canStartAutoAr() ) {
|
||
// this.main();
|
||
this.start();
|
||
}
|
||
|
||
if(Debug.debugCanvas.enabled){
|
||
// this.debugCanvas.init({width: cwidth, height: cheight});
|
||
// DebugCanvas.draw("test marker","test","rect", {x:5, y:5}, {width: 5, height: 5});
|
||
}
|
||
|
||
this.conf.arSetupComplete = true;
|
||
}
|
||
|
||
destroy(){
|
||
this.logger.log('info', 'init', `%c[ArDetect::destroy] <@${this.arid}> Destroying aard.`, _ard_console_stop);
|
||
// this.debugCanvas.destroy();
|
||
this.halt();
|
||
}
|
||
//#endregion lifecycle
|
||
|
||
//#region AARD control
|
||
start() {
|
||
if (this.settings.canStartAutoAr()) {
|
||
this.logger.log('info', 'debug', `"%c[ArDetect::start] <@${this.arid}> Starting automatic aspect ratio detection`, _ard_console_start);
|
||
} else {
|
||
this.logger.log('warn', 'debug', `"%c[ArDetect::start] <@${this.arid}> Wanted to start automatic aspect ratio detection, but settings don't allow that. Aard won't be started.`, _ard_console_change);
|
||
return;
|
||
}
|
||
|
||
if (this.conf.resizer.lastAr.type === AspectRatioType.Automatic) {
|
||
// ensure first autodetection will run in any case
|
||
this.conf.resizer.setLastAr({type: AspectRatioType.Automatic, ratio: this.defaultAr});
|
||
}
|
||
|
||
this._paused = false;
|
||
this._halted = false;
|
||
this._paused = false;
|
||
|
||
// start autodetection
|
||
this.startLoop();
|
||
|
||
// automatic detection starts halted. If halted=false when main first starts, extension won't run
|
||
// this._paused is undefined the first time we run this function, which is effectively the same thing
|
||
// as false. Still, we'll explicitly fix this here.
|
||
}
|
||
|
||
startLoop() {
|
||
if (this.animationFrameHandle) {
|
||
window.cancelAnimationFrame(this.animationFrameHandle);
|
||
}
|
||
|
||
this.animationFrameHandle = window.requestAnimationFrame( (ts) => this.animationFrameBootstrap(ts));
|
||
}
|
||
|
||
stop() {
|
||
if (this.animationFrameHandle) {
|
||
window.cancelAnimationFrame(this.animationFrameHandle);
|
||
}
|
||
this.logger.log('info', 'debug', `"%c[ArDetect::stop] <@${this.arid}> Stopping AnimationFrame loop.`, _ard_console_stop);
|
||
}
|
||
|
||
unpause() {
|
||
this.startLoop();
|
||
}
|
||
|
||
pause() {
|
||
// pause only if we were running before. Don't pause if we aren't running
|
||
// (we are running when _halted is neither true nor undefined)
|
||
if (this._halted === false) {
|
||
this._paused = true;
|
||
}
|
||
this.stop();
|
||
}
|
||
|
||
halt(){
|
||
this.logger.log('info', 'debug', `"%c[ArDetect::stop] <@${this.arid}> Halting automatic aspect ratio detection`, _ard_console_stop);
|
||
this.stop();
|
||
this._halted = true;
|
||
// this.conf.resizer.setArLastAr();
|
||
}
|
||
|
||
setManualTick(manualTick) {
|
||
this.manualTickEnabled = manualTick;
|
||
}
|
||
|
||
tick() {
|
||
this._nextTick = true;
|
||
}
|
||
//#endregion
|
||
|
||
//#region helper functions (general)
|
||
|
||
isRunning(){
|
||
return ! (this._halted || this._paused || this._exited);
|
||
}
|
||
|
||
private getVideoPlaybackState(): VideoPlaybackState {
|
||
try {
|
||
if (this.video.ended) {
|
||
return VideoPlaybackState.Ended;
|
||
} else if (this.video.paused) {
|
||
return VideoPlaybackState.Paused;
|
||
} else if (this.video.error) {
|
||
return VideoPlaybackState.Error;
|
||
} else {
|
||
return VideoPlaybackState.Playing;
|
||
}
|
||
} catch (e) {
|
||
this.logger.log('warn', 'debug', `[ArDetect::getVideoPlaybackState] There was an error while determining video playback state.`, e);
|
||
return VideoPlaybackState.Error;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Checks whether conditions for granting a frame check are fulfilled
|
||
* @returns
|
||
*/
|
||
private canTriggerFrameCheck() {
|
||
if (this._paused) {
|
||
return false;
|
||
}
|
||
|
||
// if video was paused & we know that we already checked that frame,
|
||
// we will not check it again.
|
||
const videoState = this.getVideoPlaybackState();
|
||
if (videoState !== VideoPlaybackState.Playing) {
|
||
if (this.status.lastVideoStatus === videoState) {
|
||
return false;
|
||
}
|
||
}
|
||
this.status.lastVideoStatus = videoState;
|
||
|
||
if (Date.now() < this.timers.nextFrameCheckTime) {
|
||
return false;
|
||
}
|
||
|
||
this.timers.nextFrameCheckTime = Date.now() + this.settings.active.arDetect.timers.playing;
|
||
return true;
|
||
}
|
||
|
||
private scheduleInitRestart(timeout?: number, force_reset?: boolean){
|
||
if(! timeout){
|
||
timeout = 100;
|
||
}
|
||
// don't allow more than 1 instance
|
||
if(this.setupTimer){
|
||
clearTimeout(this.setupTimer);
|
||
}
|
||
|
||
let ths = this;
|
||
this.setupTimer = setTimeout(function(){
|
||
ths.setupTimer = null;
|
||
try{
|
||
ths.start();
|
||
} catch(e) {
|
||
this.logger('error', 'debug', `[ArDetector::scheduleInitRestart] <@${this.arid}> Failed to start main(). Error:`,e);
|
||
}
|
||
ths = null;
|
||
},
|
||
timeout
|
||
);
|
||
}
|
||
|
||
private attachCanvas(canvas){
|
||
if(this.attachedCanvas)
|
||
this.attachedCanvas.remove();
|
||
|
||
// todo: place canvas on top of the video instead of random location
|
||
canvas.style.position = "absolute";
|
||
canvas.style.left = "200px";
|
||
canvas.style.top = "1200px";
|
||
canvas.style.zIndex = 10000;
|
||
|
||
document.getElementsByTagName("body")[0]
|
||
.appendChild(canvas);
|
||
}
|
||
|
||
private canvasReadyForDrawWindow(){
|
||
this.logger.log('info', 'debug', `%c[ArDetect::canvasReadyForDrawWindow] <@${this.arid}> canvas is ${this.canvas.height === window.innerHeight ? '' : 'NOT '}ready for drawWindow(). Canvas height: ${this.canvas.height}px; window inner height: ${window.innerHeight}px.`)
|
||
|
||
return this.canvas.height == window.innerHeight
|
||
}
|
||
|
||
/**
|
||
* Adds execution time sample for performance metrics
|
||
* @param performanceObject
|
||
* @param executionTime
|
||
*/
|
||
private addPerformanceTimeMeasure(performanceObject, executionTime) {
|
||
performanceObject.sampleTime[performanceObject.currentIndex] = executionTime;
|
||
performanceObject.currentIndex = (performanceObject.currentIndex + 1) % this.performanceConfig.sampleCountForAverages;
|
||
}
|
||
|
||
//#endregion
|
||
|
||
//#region helper functions (performance measurements)
|
||
|
||
/**
|
||
* Returns time ultrawidify spends on certain aspects of autodetection.
|
||
*
|
||
* The returned object contains the following:
|
||
*
|
||
* eyeballedTimeBudget — a very inaccurate time budget
|
||
* fps — framerate at which we run
|
||
* aardTime — time spent on average frameCheck loop.
|
||
* It's a nearly useless metric, because
|
||
* frameCheck can exit very early.
|
||
* drawWindowTime — how much time browser spends on executing
|
||
* drawWindow() calls.
|
||
* getImageData — how much time browser spends on executing
|
||
* getImageData() calls.
|
||
*
|
||
* Most of these are on "per frame" basis and averaged.
|
||
*/
|
||
getTimings() {
|
||
let drawWindowTime = 0, getImageDataTime = 0, aardTime = 0;
|
||
|
||
// drawImage and getImageData are of same length and use same everything
|
||
for (let i = 0; i < this.performance.drawImage.sampleTime.length; i++) {
|
||
drawWindowTime += this.performance.drawImage.sampleTime[i] ?? 0;
|
||
getImageDataTime += this.performance.getImageData.sampleTime[i] ?? 0;
|
||
}
|
||
drawWindowTime /= this.performance.drawImage.sampleTime.length;
|
||
getImageDataTime /= this.performance.getImageData.sampleTime.length;
|
||
|
||
return {
|
||
eyeballedTimeBudget: this.eyeballedTimeBudget,
|
||
fps: this.fps,
|
||
drawWindowTime,
|
||
getImageDataTime
|
||
}
|
||
}
|
||
//#endregion
|
||
|
||
/**
|
||
* This is the "main loop" for aspect ratio autodetection
|
||
*/
|
||
private animationFrameBootstrap(timestamp: number) {
|
||
// do timekeeping first
|
||
this.addPerformanceTimeMeasure(this.performance.animationFrame, timestamp - this.performance.animationFrame.lastTime)
|
||
this.performance.animationFrame.lastTime = timestamp;
|
||
|
||
// trigger frame check, if we're allowed to
|
||
if ( (!this.manualTickEnabled && this.canTriggerFrameCheck()) || this._nextTick) {
|
||
this._nextTick = false;
|
||
|
||
try {
|
||
const startTime = performance.now();
|
||
this.frameCheck();
|
||
this.addPerformanceTimeMeasure(this.performance.aard, performance.now() - startTime);
|
||
} catch (e) {
|
||
this.logger.log('error', 'debug', `%c[ArDetect::main] <@${this.arid}> Frame check failed:`, "color: #000, background: #f00", e);
|
||
}
|
||
}
|
||
|
||
if (this && !this._halted && !this._paused) {
|
||
this.animationFrameHandle = window.requestAnimationFrame( (ts) => this.animationFrameBootstrap(ts));
|
||
} else if (this._halted) {
|
||
this.logger.log('info', 'debug', `%c[ArDetect::main] <@${this.arid}> Main autodetection loop exited. Halted? ${this._halted}`, _ard_console_stop);
|
||
this._exited = true;
|
||
} else {
|
||
this.logger.log('info', 'debug', `[ArDetect::main] <@${this.arid}> Not renewing animation frame for some reason. Paused? ${this._paused}; Halted?: ${this._halted}, Exited?: ${this._exited}`);
|
||
}
|
||
}
|
||
|
||
calculateArFromEdges(edges) {
|
||
// if we don't specify these things, they'll have some default values.
|
||
if(edges.top === undefined){
|
||
edges.top = 0;
|
||
edges.bottom = 0;
|
||
edges.left = 0; // RESERVED FOR FUTURE — CURRENTLY UNUSED
|
||
edges.right = 0; // THIS FUNCTION CAN PRESENTLY ONLY HANDLE LETTERBOX
|
||
}
|
||
|
||
let letterbox = edges.top + edges.bottom;
|
||
|
||
|
||
if (! this.fallbackMode) {
|
||
// Since video is stretched to fit the canvas, we need to take that into account when calculating target
|
||
// aspect ratio and correct our calculations to account for that
|
||
|
||
const fileAr = this.video.videoWidth / this.video.videoHeight;
|
||
const canvasAr = this.canvas.width / this.canvas.height;
|
||
let widthCorrected;
|
||
|
||
if (edges.top && edges.bottom) {
|
||
// in case of letterbox, we take canvas height as canon and assume width got stretched or squished
|
||
|
||
if (fileAr != canvasAr) {
|
||
widthCorrected = this.canvas.height * fileAr;
|
||
} else {
|
||
widthCorrected = this.canvas.width;
|
||
}
|
||
|
||
return widthCorrected / (this.canvas.height - letterbox);
|
||
}
|
||
} else {
|
||
// fallback mode behaves a wee bit differently
|
||
|
||
let zoomFactor = 1;
|
||
|
||
// there's stuff missing from the canvas. We need to assume canvas' actual height is bigger by a factor x, where
|
||
// x = [video.zoomedHeight] / [video.unzoomedHeight]
|
||
//
|
||
// letterbox also needs to be corrected:
|
||
// letterbox += [video.zoomedHeight] - [video.unzoomedHeight]
|
||
|
||
let vbr = this.video.getBoundingClientRect();
|
||
|
||
zoomFactor = vbr.height / this.video.clientHeight;
|
||
letterbox += vbr.height - this.video.clientHeight;
|
||
|
||
let trueHeight = this.canvas.height * zoomFactor - letterbox;
|
||
|
||
if(edges.top > 1 && edges.top <= this.settings.active.arDetect.fallbackMode.noTriggerZonePx ){
|
||
this.logger.log('info', 'arDetect', `%c[ArDetect::calculateArFromEdges] <@${this.arid}> Edge is in the no-trigger zone. Aspect ratio change is not triggered.`)
|
||
return;
|
||
}
|
||
|
||
// varnostno območje, ki naj ostane črno (da lahko v fallback načinu odkrijemo ožanje razmerja stranic).
|
||
// x2, ker je safetyBorderPx definiran za eno stran.
|
||
// safety border so we can detect aspect ratio narrowing (21:9 -> 16:9).
|
||
// x2 because safetyBorderPx is for one side.
|
||
trueHeight += (this.settings.active.arDetect.fallbackMode.safetyBorderPx << 1);
|
||
|
||
return this.canvas.width * zoomFactor / trueHeight;
|
||
}
|
||
}
|
||
|
||
processAr(trueAr){
|
||
this.detectedAr = trueAr;
|
||
|
||
// poglejmo, če se je razmerje stranic spremenilo
|
||
// check if aspect ratio is changed:
|
||
let lastAr = this.conf.resizer.getLastAr();
|
||
if (lastAr.type === AspectRatioType.Automatic && lastAr.ratio !== null && lastAr.ratio !== undefined){
|
||
// spremembo lahko zavrnemo samo, če uporabljamo avtomatski način delovanja in če smo razmerje stranic
|
||
// že nastavili.
|
||
//
|
||
// we can only deny aspect ratio changes if we use automatic mode and if aspect ratio was set from here.
|
||
|
||
let arDiff = trueAr - lastAr.ratio;
|
||
|
||
if (arDiff < 0)
|
||
arDiff = -arDiff;
|
||
|
||
const arDiff_percent = arDiff / trueAr;
|
||
|
||
// ali je sprememba v mejah dovoljenega? Če da -> fertik
|
||
// is ar variance within acceptable levels? If yes -> we done
|
||
this.logger.log('info', 'arDetect', `%c[ArDetect::processAr] <@${this.arid}> New aspect ratio varies from the old one by this much:\n`,"color: #aaf","old Ar", lastAr.ratio, "current ar", trueAr, "arDiff (absolute):",arDiff,"ar diff (relative to new ar)", arDiff_percent);
|
||
|
||
if (arDiff < trueAr * this.settings.active.arDetect.allowedArVariance){
|
||
this.logger.log('info', 'arDetect', `%c[ArDetect::processAr] <@${this.arid}> Aspect ratio change denied — diff %: ${arDiff_percent}`, "background: #740; color: #fa2");
|
||
return;
|
||
}
|
||
this.logger.log('info', 'arDetect', `%c[ArDetect::processAr] <@${this.arid}> aspect ratio change accepted — diff %: ${arDiff_percent}`, "background: #153; color: #4f9");
|
||
}
|
||
this.logger.log('info', 'debug', `%c[ArDetect::processAr] <@${this.arid}> Triggering aspect ratio change. New aspect ratio: ${trueAr}`, _ard_console_change);
|
||
|
||
this.conf.resizer.updateAr({type: AspectRatioType.Automatic, ratio: trueAr});
|
||
}
|
||
|
||
clearImageData(id) {
|
||
if ((ArrayBuffer as any).transfer) {
|
||
(ArrayBuffer as any).transfer(id, 0);
|
||
}
|
||
id = undefined;
|
||
}
|
||
|
||
async frameCheck(){
|
||
if(! this.video){
|
||
this.logger.log('error', 'debug', `%c[ArDetect::frameCheck] <@${this.arid}> Video went missing. Destroying current instance of videoData.`);
|
||
this.conf.destroy();
|
||
return;
|
||
}
|
||
|
||
if (!this.blackframeContext) {
|
||
this.init();
|
||
}
|
||
|
||
let startTime;
|
||
let partialDrawImageTime = 0;
|
||
let sampleCols = this.sampleCols.slice(0);
|
||
|
||
//
|
||
// [0] blackframe tests (they also determine whether we need fallback mode)
|
||
//
|
||
try {
|
||
startTime = performance.now();
|
||
|
||
// do it in ghetto async. This way, other javascript function should be able to
|
||
// get a chance to do something _before_ we process our data
|
||
await new Promise<void>(
|
||
resolve => {
|
||
this.blackframeContext.drawImage(this.video, 0, 0, this.blackframeCanvas.width, this.blackframeCanvas.height);
|
||
resolve();
|
||
}
|
||
);
|
||
partialDrawImageTime += performance.now() - startTime;
|
||
|
||
this.fallbackMode = false;
|
||
|
||
// If we detected DRM and if we're here, this means we're also using Google Chrome.
|
||
// And if we're here while DRM is detected, we know we'll be looking at black frames.
|
||
// We won't be able to do anything useful, therefore we're just gonna call it quits.
|
||
if (this.conf.hasDrm) {
|
||
this.logger.log('info', 'debug', 'we have drm, doing nothing.', this.conf.hasDrm);
|
||
return;
|
||
}
|
||
} catch (e) {
|
||
this.logger.log('error', 'arDetect', `%c[ArDetect::frameCheck] <@${this.arid}> %c[ArDetect::frameCheck] can't draw image on canvas. ${this.canDoFallbackMode ? 'Trying canvas.drawWindow instead' : 'Doing nothing as browser doesn\'t support fallback mode.'}`, "color:#000; backgroud:#f51;", e);
|
||
|
||
if (! this.canvasReadyForDrawWindow()) {
|
||
// this means canvas needs to be resized, so we'll just re-run setup with all those new parameters
|
||
this.halt();
|
||
|
||
let newCanvasWidth = window.innerHeight * (this.video.videoWidth / this.video.videoHeight);
|
||
let newCanvasHeight = window.innerHeight;
|
||
|
||
if (this.conf.resizer.videoAlignment === VideoAlignmentType.Center) {
|
||
this.canvasDrawWindowHOffset = Math.round((window.innerWidth - newCanvasWidth) * 0.5);
|
||
} else if (this.conf.resizer.videoAlignment === VideoAlignmentType.Left) {
|
||
this.canvasDrawWindowHOffset = 0;
|
||
} else {
|
||
this.canvasDrawWindowHOffset = window.innerWidth - newCanvasWidth;
|
||
}
|
||
|
||
this.setup(newCanvasWidth, newCanvasHeight);
|
||
|
||
return;
|
||
}
|
||
// if this is the case, we'll first draw on canvas, as we'll need intermediate canvas if we want to get a
|
||
// smaller sample for blackframe check
|
||
this.fallbackMode = true;
|
||
|
||
startTime = performance.now();
|
||
try {
|
||
(this.context as any).drawWindow(window, this.canvasDrawWindowHOffset, 0, this.canvas.width, this.canvas.height);
|
||
} catch (e) {
|
||
this.logger.log('error', 'arDetect', `%c[ArDetect::frameCheck] can't draw image on canvas with fallback mode either. This error is prolly only temporary.`, "color:#000; backgroud:#f51;", e);
|
||
return; // it's prolly just a fluke, so we do nothing special here
|
||
}
|
||
// draw blackframe sample from our main sample:
|
||
await new Promise(resolve => {
|
||
this.blackframeContext.drawImage(this.canvas, this.blackframeCanvas.width, this.blackframeCanvas.height);
|
||
});
|
||
partialDrawImageTime += performance.now() - startTime;
|
||
|
||
this.logger.log('info', 'arDetect_verbose', `%c[ArDetect::frameCheck] canvas.drawImage seems to have worked`, "color:#000; backgroud:#2f5;");
|
||
}
|
||
|
||
const bfanalysis = this.blackframeTest();
|
||
if (bfanalysis.isBlack) {
|
||
// we don't do any corrections on frames confirmed black
|
||
this.logger.log('info', 'arDetect_verbose', `%c[ArDetect::frameCheck] Black frame analysis suggests this frame is black or too dark. Doing nothing.`, "color: #fa3", bfanalysis);
|
||
return;
|
||
}
|
||
|
||
// if we are in fallback mode, then frame has already been drawn to the main canvas.
|
||
// if we are in normal mode though, the frame has yet to be drawn
|
||
if (!this.fallbackMode) {
|
||
startTime = performance.now();
|
||
await new Promise(resolve => {
|
||
this.context.drawImage(this.video, 0, 0, this.canvas.width, this.canvas.height);
|
||
})
|
||
partialDrawImageTime += performance.now() - startTime;
|
||
}
|
||
|
||
this.addPerformanceTimeMeasure(this.performance.drawImage, partialDrawImageTime);
|
||
startTime = performance.now();
|
||
const imageData = this.context.getImageData(0, 0, this.canvas.width, this.canvas.height).data;
|
||
this.addPerformanceTimeMeasure(this.performance.getImageData, performance.now() - startTime);
|
||
|
||
if (! this.fastLetterboxPresenceTest(imageData, sampleCols) ) {
|
||
// Če ne zaznamo letterboxa, kličemo reset. Lahko, da je bilo razmerje stranic popravljeno na roke. Možno je tudi,
|
||
// da je letterbox izginil.
|
||
// If we don't detect letterbox, we reset aspect ratio to aspect ratio of the video file. The aspect ratio could
|
||
// have been corrected manually. It's also possible that letterbox (that was there before) disappeared.
|
||
this.conf.resizer.updateAr({type: AspectRatioType.Automatic, ratio: this.defaultAr});
|
||
this.guardLine.reset();
|
||
this.noLetterboxCanvasReset = true;
|
||
|
||
this.logger.log('info', 'arDetect_verbose', `%c[ArDetect::frameCheck] Letterbox not detected in fast test. Letterbox is either gone or we manually corrected aspect ratio. Nothing will be done.`, "color: #fa3");
|
||
|
||
this.clearImageData(imageData);
|
||
return;
|
||
}
|
||
|
||
|
||
// Če preverjamo naprej, potem moramo postaviti to vrednost nazaj na 'false'. V nasprotnem primeru se bo
|
||
// css resetiral enkrat na video/pageload namesto vsakič, ko so za nekaj časa obrobe odstranejene
|
||
// if we look further we need to reset this value back to false. Otherwise we'll only get CSS reset once
|
||
// per video/pageload instead of every time letterbox goes away (this can happen more than once per vid)
|
||
this.noLetterboxCanvasReset = false;
|
||
|
||
// poglejmo, če obrežemo preveč.
|
||
// let's check if we're cropping too much
|
||
const guardLineOut = this.guardLine.check(imageData, this.fallbackMode);
|
||
|
||
// če ni padla nobena izmed funkcij, potem se razmerje stranic ni spremenilo
|
||
// if both succeed, then aspect ratio hasn't changed.
|
||
if (!guardLineOut.imageFail && !guardLineOut.blackbarFail) {
|
||
this.logger.log('info', 'arDetect_verbose', `%c[ArDetect::frameCheck] guardLine tests were successful. (no imagefail and no blackbarfail)\n`, "color: #afa", guardLineOut);
|
||
this.clearImageData(imageData);
|
||
return;
|
||
}
|
||
|
||
// drugače nadaljujemo, našemu vzorcu stolpcev pa dodamo tiste stolpce, ki so
|
||
// kršili blackbar (če obstajajo) ter jih razvrstimo
|
||
// otherwise we continue. We add blackbar violations to the list of the cols
|
||
// we'll sample and sort them
|
||
if (guardLineOut.blackbarFail) {
|
||
sampleCols.concat(guardLineOut.offenders).sort(
|
||
(a: number, b: number) => a - b
|
||
);
|
||
}
|
||
|
||
// if we're in fallback mode and blackbar test failed, we restore CSS and quit
|
||
// (since the new letterbox edge isn't present in our sample due to technical
|
||
// limitations)
|
||
if (this.fallbackMode && guardLineOut.blackbarFail) {
|
||
this.conf.resizer.setAr({type: AspectRatioType.Automatic, ratio: this.defaultAr});
|
||
this.guardLine.reset();
|
||
this.noLetterboxCanvasReset = true;
|
||
|
||
this.clearImageData(imageData);
|
||
return;
|
||
}
|
||
|
||
// će se razmerje stranic spreminja iz ožjega na širšega, potem najprej poglejmo za prisotnostjo navpičnih črnih obrob.
|
||
// če so prisotne navpične obrobe tudi na levi in desni strani, potlej obstaja možnost, da gre za logo na črnem ozadju.
|
||
// v tem primeru obstaja nevarnost, da porežemo preveč. Ker obstaja dovolj velika možnost, da bi porezali preveč, rajši
|
||
// ne naredimo ničesar.
|
||
//
|
||
// če je pillarbox zaznan v primeru spremembe iz ožjega na širše razmerje stranice, razmerje povrnemo na privzeto vrednost.
|
||
//
|
||
// If aspect ratio changes from narrower to wider, we first check for presence of pillarbox. Presence of pillarbox indicates
|
||
// a chance of a logo on black background. We could cut easily cut too much. Because there's a somewhat significant chance
|
||
// that we will cut too much, we rather avoid doing anything at all. There's gonna be a next chance.
|
||
try{
|
||
if(guardLineOut.blackbarFail || guardLineOut.imageFail){
|
||
if(this.edgeDetector.findBars(imageData, null, EdgeDetectPrimaryDirection.Horizontal).status === 'ar_known'){
|
||
if(guardLineOut.blackbarFail){
|
||
this.logger.log('info', 'arDetect', `[ArDetect::frameCheck] Detected blackbar violation and pillarbox. Resetting to default aspect ratio.`);
|
||
this.conf.resizer.setAr({type: AspectRatioType.Automatic, ratio: this.defaultAr});
|
||
this.guardLine.reset();
|
||
}
|
||
|
||
this.clearImageData(imageData);
|
||
return;
|
||
}
|
||
}
|
||
} catch(e) {
|
||
this.logger.log('info', 'arDetect', `[ArDetect::frameCheck] something went wrong while checking for pillarbox. Error:\n`, e);
|
||
}
|
||
|
||
// pa poglejmo, kje se končajo črne letvice na vrhu in na dnu videa.
|
||
// let's see where black bars end.
|
||
this.sampleCols_current = sampleCols.length;
|
||
|
||
// blackSamples -> {res_top, res_bottom}
|
||
|
||
let edgePost = this.edgeDetector.findBars(imageData, sampleCols, EdgeDetectPrimaryDirection.Vertical, EdgeDetectQuality.Improved, guardLineOut, bfanalysis);
|
||
|
||
this.logger.log('info', 'arDetect_verbose', `%c[ArDetect::frameCheck] edgeDetector returned this\n`, "color: #aaf", edgePost);
|
||
|
||
if (edgePost.status !== EdgeStatus.ARKnown){
|
||
// rob ni bil zaznan, zato ne naredimo ničesar.
|
||
// no edge was detected. Let's leave things as they were
|
||
this.logger.log('info', 'arDetect_verbose', `%c[ArDetect::frameCheck] Edge wasn't detected with findBars`, "color: #fa3", edgePost, "EdgeStatus.AR_KNOWN:", EdgeStatus.ARKnown);
|
||
|
||
this.clearImageData(imageData);
|
||
return;
|
||
}
|
||
|
||
let newAr = this.calculateArFromEdges(edgePost);
|
||
|
||
this.logger.log('info', 'arDetect_verbose', `%c[ArDetect::frameCheck] Triggering aspect ration change! new ar: ${newAr}`, "color: #aaf");
|
||
|
||
// we also know edges for guardline, so set them.
|
||
// we need to be mindful of fallbackMode though
|
||
// if edges are okay and not invalid, we also
|
||
// allow automatic aspect ratio correction. If edges
|
||
// are bogus, we remain aspect ratio unchanged.
|
||
try {
|
||
if (!this.fallbackMode) {
|
||
// throws error if top/bottom are invalid
|
||
this.guardLine.setBlackbar({top: edgePost.guardLineTop, bottom: edgePost.guardLineBottom});
|
||
} else {
|
||
if (this.conf.player.dimensions){
|
||
this.guardLine.setBlackbarManual({
|
||
top: this.settings.active.arDetect.fallbackMode.noTriggerZonePx,
|
||
bottom: this.conf.player.dimensions.height - this.settings.active.arDetect.fallbackMode.noTriggerZonePx - 1
|
||
},{
|
||
top: edgePost.guardLineTop + this.settings.active.arDetect.guardLine.edgeTolerancePx,
|
||
bottom: edgePost.guardLineBottom - this.settings.active.arDetect.guardLine.edgeTolerancePx
|
||
})
|
||
}
|
||
}
|
||
|
||
this.processAr(newAr);
|
||
} catch (e) {
|
||
// edges weren't gucci, so we'll just reset
|
||
// the aspect ratio to defaults
|
||
this.logger.log('error', 'arDetect', `%c[ArDetect::frameCheck] There was a problem setting blackbar. Doing nothing. Error:`, e);
|
||
|
||
try {
|
||
this.guardLine.reset();
|
||
} catch (e) {
|
||
// no guardline, no bigge
|
||
}
|
||
// WE DO NOT RESET ASPECT RATIO HERE IN CASE OF PROBLEMS, CAUSES UNWARRANTED RESETS:
|
||
// (eg. here: https://www.youtube.com/watch?v=nw5Z93Yt-UQ&t=410)
|
||
//
|
||
// this.conf.resizer.setAr({type: AspectRatioType.Automatic, ratio: this.defaultAr});
|
||
}
|
||
|
||
this.clearImageData(imageData);
|
||
}
|
||
|
||
resetBlackLevel(){
|
||
this.blackLevel = this.settings.active.arDetect.blackbar.blackLevel;
|
||
}
|
||
|
||
blackLevelTest_full() {
|
||
|
||
}
|
||
|
||
blackframeTest() {
|
||
if (this.blackLevel === undefined) {
|
||
this.logger.log('info', 'arDetect_verbose', "[ArDetect::blackframeTest] black level undefined, resetting");
|
||
this.resetBlackLevel();
|
||
}
|
||
|
||
const rows = this.blackframeCanvas.height;
|
||
const cols = this.blackframeCanvas.width;
|
||
const pixels = rows * cols;
|
||
let cumulative_r = 0, cumulative_g = 0, cumulative_b = 0;
|
||
let max_r = 0, max_g = 0, max_b = 0;
|
||
let avg_r, avg_g, avg_b;
|
||
let var_r = 0, var_g = 0, var_b = 0;
|
||
|
||
let pixelMax = 0;
|
||
let cumulativeValue = 0;
|
||
let blackPixelCount = 0;
|
||
const bfImageData = this.blackframeContext.getImageData(0, 0, cols, rows).data;
|
||
const blackTreshold = this.blackLevel + this.settings.active.arDetect.blackbar.frameThreshold;
|
||
|
||
|
||
// we do some recon for letterbox and pillarbox. While this can't determine whether letterbox/pillarbox exists
|
||
// with sufficient level of certainty due to small sample resolution, it can still give us some hints for later
|
||
let rowMax = new Array(rows).fill(0);
|
||
let colMax = new Array(cols).fill(0);
|
||
|
||
let r: number, c: number;
|
||
|
||
|
||
for (let i = 0; i < bfImageData.length; i+= 4) {
|
||
pixelMax = Math.max(bfImageData[i], bfImageData[i+1], bfImageData[i+2]);
|
||
bfImageData[i+3] = pixelMax;
|
||
|
||
if (pixelMax < blackTreshold) {
|
||
if (pixelMax < this.blackLevel) {
|
||
this.blackLevel = pixelMax;
|
||
}
|
||
blackPixelCount++;
|
||
} else {
|
||
cumulativeValue += pixelMax;
|
||
cumulative_r += bfImageData[i];
|
||
cumulative_g += bfImageData[i+1];
|
||
cumulative_b += bfImageData[i+2];
|
||
|
||
max_r = max_r > bfImageData[i] ? max_r : bfImageData[i];
|
||
max_g = max_g > bfImageData[i+1] ? max_g : bfImageData[i+1];
|
||
max_b = max_b > bfImageData[i+2] ? max_b : bfImageData[i+2];
|
||
}
|
||
|
||
r = ~~(i/rows);
|
||
c = i % cols;
|
||
|
||
if (pixelMax > rowMax[r]) {
|
||
rowMax[r] = pixelMax;
|
||
}
|
||
if (pixelMax > colMax[c]) {
|
||
colMax[c] = colMax;
|
||
}
|
||
}
|
||
|
||
max_r = 1 / (max_r || 1);
|
||
max_g = 1 / (max_g || 1);
|
||
max_b = 1 / (max_b || 1);
|
||
|
||
const imagePixels = pixels - blackPixelCount;
|
||
// calculate averages and normalize them
|
||
avg_r = (cumulative_r / imagePixels) * max_r;
|
||
avg_g = (cumulative_g / imagePixels) * max_g;
|
||
avg_b = (cumulative_b / imagePixels) * max_b;
|
||
|
||
// second pass for color variance
|
||
for (let i = 0; i < bfImageData.length; i+= 4) {
|
||
if (bfImageData[i+3] >= this.blackLevel) {
|
||
var_r += Math.abs(avg_r - bfImageData[i] * max_r);
|
||
var_g += Math.abs(avg_g - bfImageData[i+1] * max_g);
|
||
var_b += Math.abs(avg_b - bfImageData[i+1] * max_b);
|
||
}
|
||
}
|
||
|
||
const hasSufficientVariance = Math.abs(var_r - var_g) / Math.max(var_r, var_g, 1) > this.settings.active.arDetect.blackframe.sufficientColorVariance
|
||
|| Math.abs(var_r - var_b) / Math.max(var_r, var_b, 1) > this.settings.active.arDetect.blackframe.sufficientColorVariance
|
||
|| Math.abs(var_b - var_g) / Math.max(var_b, var_g, 1) > this.settings.active.arDetect.blackframe.sufficientColorVariance
|
||
|
||
let isBlack = (blackPixelCount/(cols * rows) > this.settings.active.arDetect.blackframe.blackPixelsCondition);
|
||
|
||
if (! isBlack) {
|
||
if (hasSufficientVariance) {
|
||
isBlack = cumulativeValue < this.settings.active.arDetect.blackframe.cumulativeThresholdLax;
|
||
} else {
|
||
isBlack = cumulativeValue < this.settings.active.arDetect.blackframe.cumulativeThresholdStrict;
|
||
}
|
||
}
|
||
|
||
if (Debug.debug) {
|
||
return {
|
||
isBlack: isBlack,
|
||
blackPixelCount: blackPixelCount,
|
||
blackPixelRatio: (blackPixelCount/(cols * rows)),
|
||
cumulativeValue: cumulativeValue,
|
||
hasSufficientVariance: hasSufficientVariance,
|
||
blackLevel: this.blackLevel,
|
||
variances: {
|
||
raw: {
|
||
r: var_r, g: var_g, b: var_b
|
||
},
|
||
relative: {
|
||
rg: Math.abs(var_r - var_g) / Math.max(var_r, var_g, 1),
|
||
rb: Math.abs(var_r - var_b) / Math.max(var_r, var_b, 1),
|
||
gb: Math.abs(var_b - var_g) / Math.max(var_b, var_g, 1),
|
||
},
|
||
relativePercent: {
|
||
rg: Math.abs(var_r - var_g) / Math.max(var_r, var_g, 1) / this.settings.active.arDetect.blackframe.sufficientColorVariance,
|
||
rb: Math.abs(var_r - var_b) / Math.max(var_r, var_b, 1) / this.settings.active.arDetect.blackframe.sufficientColorVariance,
|
||
gb: Math.abs(var_b - var_g) / Math.max(var_b, var_g, 1) / this.settings.active.arDetect.blackframe.sufficientColorVariance,
|
||
},
|
||
varianceLimit: this.settings.active.arDetect.blackframe.sufficientColorVariance,
|
||
},
|
||
cumulativeValuePercent: cumulativeValue / (hasSufficientVariance ? this.settings.active.arDetect.blackframe.cumulativeThresholdLax : this.settings.active.arDetect.blackframe.cumulativeThresholdStrict),
|
||
rowMax: rowMax,
|
||
colMax: colMax,
|
||
};
|
||
}
|
||
return {
|
||
isBlack: isBlack,
|
||
rowMax: rowMax,
|
||
colMax: colMax,
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Does a quick test to see if the aspect ratio is correct
|
||
* Returns 'true' if there's a chance of letterbox existing, false if not.
|
||
* @param imageData
|
||
* @param sampleCols
|
||
* @returns
|
||
*/
|
||
fastLetterboxPresenceTest(imageData, sampleCols) {
|
||
// fast test to see if aspect ratio is correct.
|
||
// returns 'true' if presence of letterbox is possible.
|
||
// returns 'false' if we found a non-black edge pixel.
|
||
|
||
// If we detect anything darker than blackLevel, we modify blackLevel to the new lowest value
|
||
const rowOffset = this.canvas.width * (this.canvas.height - 1);
|
||
let currentMin = 255, currentMax = 0, colOffset_r, colOffset_g, colOffset_b, colOffset_rb, colOffset_gb, colOffset_bb, blthreshold = this.settings.active.arDetect.blackbar.threshold;
|
||
|
||
// detect black level. if currentMax comes above blackbar + blackbar threshold, we know we aren't letterboxed
|
||
|
||
for (let i = 0; i < sampleCols.length; ++i){
|
||
colOffset_r = sampleCols[i] << 2;
|
||
colOffset_g = colOffset_r + 1;
|
||
colOffset_b = colOffset_r + 2;
|
||
colOffset_rb = colOffset_r + rowOffset;
|
||
colOffset_gb = colOffset_g + rowOffset;
|
||
colOffset_bb = colOffset_b + rowOffset;
|
||
|
||
currentMax = Math.max(
|
||
imageData[colOffset_r], imageData[colOffset_g], imageData[colOffset_b],
|
||
// imageData[colOffset_rb], imageData[colOffset_gb], imageData[colOffset_bb],
|
||
currentMax
|
||
);
|
||
|
||
if (currentMax > this.blackLevel + blthreshold) {
|
||
// we search no further
|
||
if (currentMin < this.blackLevel) {
|
||
this.blackLevel = currentMin;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
currentMin = Math.min(
|
||
currentMax,
|
||
currentMin
|
||
);
|
||
}
|
||
|
||
|
||
|
||
if (currentMin < this.blackLevel) {
|
||
this.blackLevel = currentMin
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
}
|
||
|
||
let _ard_console_stop = "background: #000; color: #f41";
|
||
let _ard_console_start = "background: #000; color: #00c399";
|
||
let _ard_console_change = "background: #000; color: #ff8";
|
||
|
||
export default ArDetector;
|