通话质量检测

BRTC 提供 statistics 回调事件，它会每隔两秒钟一次向应用层上报当前网络质量，其参数包括本地推流和远端拉流质量两个部分：

示例代码

this.client = BRTCCloud.createBRTCloud({appId: this.appId})
this.client.on('statistics', statistics => {
  console.log('\n fps: ${statistics.fps},')
  console.log('\n uploss: ${statistics.upLoss},')
  console.log('\n rtt: ${statistics.rtt},')
  console.log('\n cpu: ${statistics.cpu},')
  console.log('\n bytesSent: ${statistics.sentBytes},')
  console.log('\n downloss:  ${statistics.downLoss},')
  console.log('\n receiveSent: ${statistics.receivedBytes},')
  if (statistics.localStatisticsArray.length) {
    for (let i = 0; i < statistics.localStatisticsArray.length; i++) {
      console.log('\n width: ${statistics.localStatisticsArray[i].width},')
      console.log('\n height: ${statistics.localStatisticsArray[i].height},')
      console.log('\n videoBitrate: ${statistics.localStatisticsArray[i].videoBitrate},')
      console.log('\n audioBitrate: ${statistics.localStatisticsArray[i].audioBitrate},')
      console.log('\n frameRate: ${statistics.localStatisticsArray[i].frameRate},')
      console.log('\n audioSampleRate: ${statistics.localStatisticsArray[i].audioSampleRate},')
      console.log('\n availableSendBandwidth: ${statistics.localStatisticsArray[i].availableSendBandwidth},')
      console.log('\n streamType: ${statistics.localStatisticsArray[i].streamType},')
    }
  }
  if (statistics.remoteStatisticsArray.length) {
    for (let i = 0; i < statistics.remoteStatisticsArray.length; i++) {
      console.log('\n streamType: ${statistics.remoteStatisticsArray[i].streamType}')
      console.log('\n width:  ${statistics.remoteStatisticsArray[i].width},')
      console.log('\n height:  ${statistics.remoteStatisticsArray[i].height},')
      console.log('\n videoBitrate:  ${statistics.remoteStatisticsArray[i].videoBitrate},')
      console.log('\n audioBitrate:  ${statistics.remoteStatisticsArray[i].audioBitrate},')
      console.log('\n finalLoss:  ${statistics.remoteStatisticsArray[i].finalLoss},')
      console.log('\n frameRate:  ${statistics.remoteStatisticsArray[i].frameRate},')
      console.log('\n audioSampleRate:  ${statistics.remoteStatisticsArray[i].audioSampleRate},')
      console.log('\n jitterBufferDelay:  ${statistics.remoteStatisticsArray[i].jitterBufferDelay},')
      console.log('\n availableRecvBandwidth:  ${statistics.remoteStatisticsArray[i].availableRecvBandwidth},')
      console.log('\n userId:  ${statistics.remoteStatisticsArray[i].userId},')
    }
  }
})













class BRTCCore : public BRTCCallback, public BRTCAudioFrameCallback {
 public:
   // interface BRTCCallback
   void onStatistics(const BRTCStatistics& statistics) 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;
}

流类型 BRTCVideoStreamType 定义如下：

• BRTCVideoStreamTypeBig(0): 主画面视频流
• BRTCVideoStreamTypeSmall(1): 小画面视频流
• BRTCVideoStreamTypeSub(2): 辅流（屏幕分享）