Function drawFrames

src/__tests__/MediaStreamRecorder.js:1856–1898

()

    var isOnStartedDrawingNonBlankFramesInvoked = false;

    function drawFrames() {
        if (isPaused) {
            lastTime = new Date().getTime();
            setTimeout(drawFrames, 500);
            return;
        }

        if (isStopDrawing) {
            return;
        }

        if (requestDataInvoked) {
            return setTimeout(drawFrames, 100);
        }

        var duration = new Date().getTime() - lastTime;
        if (!duration) {
            return drawFrames();
        }

        // via webrtc-experiment#206, by Jack i.e. @Seymourr
        lastTime = new Date().getTime();

        if (!self.isHTMLObject && video.paused) {
            video.play(); // Android
        }

        context.drawImage(video, 0, 0, canvas.width, canvas.height);

        if (!isStopDrawing) {
            whammy.frames.push({
                duration: duration,
                image: canvas.toDataURL('image/webp')
            });
        }

        if (!isOnStartedDrawingNonBlankFramesInvoked && !isBlankFrame(whammy.frames[whammy.frames.length - 1])) {
            isOnStartedDrawingNonBlankFramesInvoked = true;
            root.onStartedDrawingNonBlankFrames();
        }

        setTimeout(drawFrames, 10);
    }

    var isStopDrawing = false;