google-meet-captions/print_captions.js

class CaptionCapture {
    constructor() {
        this.isCapturing = false; // Flag to control capturing
        this.intervalId = null; // Store interval reference
        this.lastCaption = ""; // Store last seen caption
    }

    // Function to detect and get the caption text
    detectCaption() {
        return document.querySelector('div[jsname="tgaKEf"]')?.innerText || "";
    }

    // Function to start capturing captions
    startCapturing() {
        if (this.isCapturing) {
            console.log("Caption capturing is already running.");
            return;
        }

        this.isCapturing = true;
        console.log("Caption capturing started.");

        this.intervalId = setInterval(() => {
            let currentCaption = this.detectCaption();
            if (currentCaption && currentCaption !== this.lastCaption) {
                console.log(currentCaption);
                this.lastCaption = currentCaption; // Update last seen caption
            }
        }, 1000); // Runs every 1 second
    }

    // Function to stop capturing captions
    stopCapturing() {
        if (!this.isCapturing) {
            console.log("Caption capturing is not running.");
            return;
        }

        this.isCapturing = false;
        clearInterval(this.intervalId);
        console.log("Caption capturing stopped.");
    }
}

// Usage:
const captionCapture = new CaptionCapture();

// Start capturing:
captionCapture.startCapturing();

// Stop capturing:
captionCapture.stopCapturing();