mVideoBw is zero when publisher device is in low network

[shahalRahman]

When the publisher device is moved to low network(2G), SubscriberVideoStats.videoBytesReceived is coming same for around 30 seconds. And during this time mVideoBw is calculated to 0.

private void checkSubscriberVideoStats(SubscriberKit.SubscriberVideoStats stats) {
    double videoTimestamp = stats.timeStamp / 1000;

    Log.d(TAG, "onVideoStats: stats considering same_timestamp:" + (s_prevVideoTimestamp==videoTimestamp)+" same_byte:"+(stats.videoBytesReceived == s_prevVideoBytes));
    //initialize values
    if (s_prevVideoTimestamp == 0) {
        s_prevVideoTimestamp = videoTimestamp;
        s_prevVideoBytes = stats.videoBytesReceived;
    }

    if (videoTimestamp - s_prevVideoTimestamp >= TIME_WINDOW) {
        //calculate video packets lost ratio
        if (s_prevVideoPacketsRcvd != 0) {
            long pl = stats.videoPacketsLost - s_prevVideoPacketsLost;
            long pr = stats.videoPacketsReceived - s_prevVideoPacketsRcvd;
            long pt = pl + pr;

            if (pt > 0) {
                s_videoPLRatio = (double) pl / (double) pt;
            }
        }
        s_prevVideoPacketsLost = stats.videoPacketsLost;
        s_prevVideoPacketsRcvd = stats.videoPacketsReceived;

        long mVideoBw = (long) ((8 * (stats.videoBytesReceived - s_prevVideoBytes)) / (videoTimestamp - s_prevVideoTimestamp));

        s_prevVideoTimestamp = videoTimestamp;
        s_prevVideoBytes = stats.videoBytesReceived;
        if (s_videoPLRatio > 0) {
            s_avgVideoPLRatio = (s_videoPLRatio + s_avgVideoPLRatio) / 2;
        } else {
            s_avgVideoPLRatio = s_videoPLRatio;
        }
        if (mVideoBw > 0) {
            s_avgVideoBw = (mVideoBw + s_avgVideoBw) / 2;
        } else {
            s_avgVideoBw = mVideoBw;
        }
        Log.d(TAG, "onVideoStats: stats considering avgVideoBw:" + s_avgVideoBw + " PLRatio:" + s_avgVideoPLRatio + " BytesReceived:" + stats.videoBytesReceived + " PacketsReceived:" + stats.videoPacketsReceived + " PacketsLost:" + stats.videoPacketsLost + " mVideoBw:" + mVideoBw);

    }

}

We're using v2.17.0