通话质量检测

BRTC 提供两套关于通话质量反馈的回调：

• onStatistics 回调事件，它会每隔两秒钟上报当前的音视频推拉流度量数据。您可以通过这些度量数据来评价整体的通话质量。
• onNetworkQuality 回调事件，它根据 SDK 自定义的一套评价原则，提供了简单的几档评价结果，属于颗粒度比较粗的评价结果。对于不需要特别详细的度量数据时，也可以使用这个回调来完成通话质量的大致评价。

示例代码

class BRTCCore : public BRTCCallback {
 public:
   // interface BRTCCallback
   void onStatistics(const BRTCStatistics& statistics) override;
   void onNetworkQuality(uint32_t count, BRTCNetworkQualityInfo* qualityArray) override;

 private:
   BRTC* m_pBrtc = nullptr;
}

void BRTCCore::onStatistics(const BRTCStatistics& statistics) {
  std::string info;
  info.append("\nupLoss: ")
      .append(rtc::ToString(statistics.upLoss))
      .append("\ndownLoss: ")
      .append(rtc::ToString(statistics.downLoss))
      .append("\ncpu: ")
      .append(rtc::ToString(statistics.cpu))
      .append("\nrtt: ")
      .append(rtc::ToString(statistics.rtt));
  if (statistics.localStatisticsArray != nullptr && statistics.localStatisticsArraySize != 0) {
    for (int i = 0; i < static_cast<int>(statistics.localStatisticsArraySize); i++) {
      info.append("\nvideoBitrate: ")
        .append(rtc::ToString(statistics.localStatisticsArray[i].videoBitrate))
        .append("\naudioBitrate: ")
        .append(rtc::ToString(statistics.localStatisticsArray[i].audioBitrate))
        .append("\nwidth: ")
        .append(rtc::ToString(statistics.localStatisticsArray[i].width))
        .append("\nheight: ")
        .append(rtc::ToString(statistics.localStatisticsArray[i].height))
        .append("\nfps: ")
        .append(rtc::ToString(statistics.localStatisticsArray[i].frameRate))
        .append("\navailableSendBandwidth: ")
        .append(rtc::ToString(statistics.localStatisticsArray[i].availableSendBandwidth))
        .append("\nstreamType: ")
        .append(rtc::ToString(statistics.localStatisticsArray[i].streamType));
    }
  }

  if (statistics.remoteStatisticsArray != nullptr && statistics.remoteStatisticsArraySize != 0) {
    for (int i = 0; i < static_cast<int>(statistics.remoteStatisticsArraySize); i++) {
      info.append("\nremote userId: ")
        .append(rtc::ToString(statistics.remoteStatisticsArray[i].userId));
      info.append("\nremote videoBitrate: ")
        .append(rtc::ToString(statistics.remoteStatisticsArray[i].videoBitrate))
        .append("\nremote audioBitrate: ")
        .append(rtc::ToString(statistics.remoteStatisticsArray[i].audioBitrate))
        .append("\nremote width: ")
        .append(rtc::ToString(statistics.remoteStatisticsArray[i].width))
        .append("\nremote height: ")
        .append(rtc::ToString(statistics.remoteStatisticsArray[i].height))
        .append("\nremote fps: ")
        .append(rtc::ToString(statistics.remoteStatisticsArray[i].frameRate))
        .append("\nremote availableRecvBandwidth: ")
        .append(rtc::ToString(statistics.remoteStatisticsArray[i].availableRecvBandwidth));
        .append("\nremote streamType: ")
        .append(rtc::ToString(statistics.remoteStatisticsArray[i].streamType));
    }
  }
  LOG(INFO) << "received statistic:" << info;
}

void BRTCCore::onNetworkQuality(uint32_t count, BRTCNetworkQualityInfo* qualityArray) {
  BRTCNetworkQualityInfo* infoArray = new BRTCNetworkQualityInfo[count];
    for (uint32_t index = 0; index < count; index++) {
        // 用户ID： qualityArray[index].userId;
        // 用户的网络质量评价：static_cast<BRTCNetworkQualityLevel>(qualityArray[index].qualityLevel);
    }
}