++

client/public/media-monitoring.js

@@ -0,0 +1,62 @@
+export function createAudioAnalyser(stream, fftSize) {
+    const AudioContextCtor = window.AudioContext || window.webkitAudioContext;
+    const audioContext = new AudioContextCtor();
+    const source = audioContext.createMediaStreamSource(stream);
+    const analyser = audioContext.createAnalyser();
+    analyser.fftSize = fftSize;
+    source.connect(analyser);
+
+    return {
+        audioContext,
+        analyser,
+        dataArray: new Uint8Array(analyser.frequencyBinCount)
+    };
+}
+
+export function getAudioLevel(analyser, dataArray) {
+    analyser.getByteTimeDomainData(dataArray);
+
+    let sum = 0;
+    for (let i = 0; i < dataArray.length; i++) {
+        const amplitude = dataArray[i] - 128;
+        sum += amplitude * amplitude;
+    }
+
+    const rms = Math.sqrt(sum / dataArray.length);
+    return rms / 128;
+}
+
+function formatPacketLossRate(packetsLost, packetsReceived) {
+    if (packetsReceived <= 0) {
+        return '0%';
+    }
+
+    return `${((packetsLost / (packetsLost + packetsReceived)) * 100).toFixed(2)}%`;
+}
+
+export function buildStatsLogPayload(networkQuality, statsSummary) {
+    return {
+        networkQuality,
+        video: {
+            'Packets Lost': statsSummary.video.packetsLost,
+            'Packets Received': statsSummary.video.packetsReceived,
+            'Packet Loss Rate': formatPacketLossRate(
+                statsSummary.video.packetsLost,
+                statsSummary.video.packetsReceived
+            ),
+            'Jitter': `${(statsSummary.video.jitter * 1000).toFixed(2)}ms`,
+            'Round Trip Time': `${(statsSummary.video.roundTripTime * 1000).toFixed(2)}ms`,
+            'FPS': statsSummary.video.fps.toFixed(1),
+            'Bitrate': `${statsSummary.video.bitrate}kbps`
+        },
+        audio: {
+            'Packets Lost': statsSummary.audio.packetsLost,
+            'Packets Received': statsSummary.audio.packetsReceived,
+            'Packet Loss Rate': formatPacketLossRate(
+                statsSummary.audio.packetsLost,
+                statsSummary.audio.packetsReceived
+            ),
+            'Jitter': `${(statsSummary.audio.jitter * 1000).toFixed(2)}ms`
+        }
+    };
+}

client/public/store.js

@@ -25,6 +25,7 @@ import {
     getResolutionLabel,
     getTargetResolutionBitrate
 } from './media-config.js';
+import { buildStatsLogPayload, createAudioAnalyser, getAudioLevel } from './media-monitoring.js';
 import { getNetworkQualityFromSummary, summarizeInboundStats } from './webrtc-stats.js';
 
 class CallStateManager {
@@ -923,11 +924,8 @@ class CallStateManager {
     }
 
     _updateRemoteUserProfile(profile) {
-        this.state.session.remoteUser = {
-            ...this.state.session.remoteUser,
-            ...profile
-        };
-        this.notify({ type: 'REMOTE_MEDIA_CHANGE', mediaState: this.state.session.remoteUser.mediaState });
+        this._setRemoteUserState(profile);
+        this._notifyRemoteUserChange({ mediaState: this.state.session.remoteUser.mediaState });
     }
 
     _syncCallDuration(callDuration) {
@@ -953,6 +951,32 @@ class CallStateManager {
         }, 1000);
     }
 
+    _setRemoteUserState(patch) {
+        this.state.session.remoteUser = {
+            ...this.state.session.remoteUser,
+            ...patch
+        };
+    }
+
+    _setRemoteUserMediaState(mediaState) {
+        this._setRemoteUserState({
+            mediaState: {
+                ...this.state.session.remoteUser.mediaState,
+                ...mediaState
+            }
+        });
+    }
+
+    _notifyRemoteUserChange(changes = {}) {
+        this.notify({
+            type: 'REMOTE_MEDIA_CHANGE',
+            ...changes,
+            localUser: this.state.session.localUser,
+            remoteUser: this.state.session.remoteUser
+        });
+        this._notifyUserListUpdate();
+    }
+
     /**
      * 发送消息
      * @param {string} type - 消息类型
@@ -1188,23 +1212,29 @@ class CallStateManager {
 
     // 更新远端媒体状态 (由 WebSocket 触发)
     updateRemoteMedia(mediaState, participantId) {
-        this.state.session.remoteUser.mediaState = {
-            ...this.state.session.remoteUser.mediaState,
-            ...mediaState
-        };
-        this.notify({ type: 'REMOTE_MEDIA_CHANGE', mediaState, participantId });
-        // 通知UI更新用户列表
-        this.notify({ type: 'USER_LIST_UPDATE', localUser: this.state.session.localUser, remoteUser: this.state.session.remoteUser });
+        this._setRemoteUserMediaState(mediaState);
+        this._notifyRemoteUserChange({ mediaState, participantId });
     }
 
     // 更新远端用户状态
     updateRemoteUserStatus(status) {
-        this.state.session.remoteUser.status = status;
-        this.notify({ type: 'REMOTE_MEDIA_CHANGE', localUser: this.state.session.localUser, remoteUser: this.state.session.remoteUser });
+        this._setRemoteUserState({ status });
+        this._notifyRemoteUserChange();
     }
     updateRemoteUserNetworkQuality(networkQuality) {
-        this.state.session.remoteUser.networkQuality = networkQuality;
-        this.notify({ type: 'REMOTE_MEDIA_CHANGE', localUser: this.state.session.localUser, remoteUser: this.state.session.remoteUser });
+        this._setRemoteUserState({ networkQuality });
+        this._notifyRemoteUserChange();
+    }
+
+    _setSpeakingState(isLocal, isSpeaking) {
+        if (isLocal) {
+            this.state.session.localUser.mediaState.isSpeaking = isSpeaking;
+            this._notifyLocalMediaChange('isSpeaking', isSpeaking);
+            this.emitMediaStateChange();
+            return;
+        }
+
+        this.updateRemoteMedia({ isSpeaking });
     }
     // 结束通话（用户主动点击挂断按钮）
     async endCall() {
@@ -1256,7 +1286,7 @@ class CallStateManager {
 
             // 更新网络质量状态
             if (this.state.session.remoteUser.networkQuality !== quality) {
-                this.state.session.remoteUser.networkQuality = quality;
+                this.updateRemoteUserNetworkQuality(quality);
                 this.notify({ type: 'NETWORK_CHANGE', quality });
             }
 
@@ -1278,14 +1308,7 @@ class CallStateManager {
         try {
             const { threshold, debounceTime, fftSize } = VAD_CONFIG;
 
-            const audioContext = new (window.AudioContext || window.webkitAudioContext)();
-            const source = audioContext.createMediaStreamSource(stream);
-            const analyser = audioContext.createAnalyser();
-            analyser.fftSize = fftSize;
-
-            source.connect(analyser);
-
-            const dataArray = new Uint8Array(analyser.frequencyBinCount);
+            const { analyser, dataArray } = createAudioAnalyser(stream, fftSize);
             let isSpeaking = false;
             let lastActivityTime = 0;
 
@@ -1294,38 +1317,18 @@ class CallStateManager {
                     return;
                 }
 
-                analyser.getByteTimeDomainData(dataArray);
-
-                let sum = 0;
-                for (let i = 0; i < dataArray.length; i++) {
-                    const amplitude = dataArray[i] - 128;
-                    sum += amplitude * amplitude;
-                }
-                const rms = Math.sqrt(sum / dataArray.length);
-                const level = rms / 128;
+                const level = getAudioLevel(analyser, dataArray);
 
                 const currentTime = Date.now();
                 if (level > threshold / 100) {
                     lastActivityTime = currentTime;
                     if (!isSpeaking) {
                         isSpeaking = true;
-                        if (isLocal) {
-                            this.state.session.localUser.mediaState.isSpeaking = true;
-                            this.notify({ type: 'LOCAL_MEDIA_CHANGE', mediaType: 'isSpeaking', value: true });
-                            this.emitMediaStateChange();
-                        } else {
-                            this.updateRemoteMedia({ isSpeaking: true });
-                        }
+                        this._setSpeakingState(isLocal, true);
                     }
                 } else if (isSpeaking && currentTime - lastActivityTime > debounceTime) {
                     isSpeaking = false;
-                    if (isLocal) {
-                        this.state.session.localUser.mediaState.isSpeaking = false;
-                        this.notify({ type: 'LOCAL_MEDIA_CHANGE', mediaType: 'isSpeaking', value: false });
-                        this.emitMediaStateChange();
-                    } else {
-                        this.updateRemoteMedia({ isSpeaking: false });
-                    }
+                    this._setSpeakingState(isLocal, false);
                 }
 
                 if (this.state.session.status === 'ongoing') {
@@ -1395,27 +1398,13 @@ class CallStateManager {
                 }
 
                 const statsSummary = summarizeInboundStats(stats);
+                const statsLog = buildStatsLogPayload(this.state.session.remoteUser.networkQuality, statsSummary);
 
                 // 输出详细统计信息
                 console.log('=== WebRTC Statistics ===');
-                console.log(`Network Quality: ${this.state.session.remoteUser.networkQuality}`);
-                console.log('Video Stats:', {
-                    'Packets Lost': statsSummary.video.packetsLost,
-                    'Packets Received': statsSummary.video.packetsReceived,
-                    'Packet Loss Rate': statsSummary.video.packetsReceived > 0 ?
-                        `${((statsSummary.video.packetsLost / (statsSummary.video.packetsLost + statsSummary.video.packetsReceived)) * 100).toFixed(2)}%` : '0%',
-                    'Jitter': `${(statsSummary.video.jitter * 1000).toFixed(2)}ms`,
-                    'Round Trip Time': `${(statsSummary.video.roundTripTime * 1000).toFixed(2)}ms`,
-                    'FPS': statsSummary.video.fps.toFixed(1),
-                    'Bitrate': `${statsSummary.video.bitrate}kbps`
-                });
-                console.log('Audio Stats:', {
-                    'Packets Lost': statsSummary.audio.packetsLost,
-                    'Packets Received': statsSummary.audio.packetsReceived,
-                    'Packet Loss Rate': statsSummary.audio.packetsReceived > 0 ?
-                        `${((statsSummary.audio.packetsLost / (statsSummary.audio.packetsLost + statsSummary.audio.packetsReceived)) * 100).toFixed(2)}%` : '0%',
-                    'Jitter': `${(statsSummary.audio.jitter * 1000).toFixed(2)}ms`
-                });
+                console.log(`Network Quality: ${statsLog.networkQuality}`);
+                console.log('Video Stats:', statsLog.video);
+                console.log('Audio Stats:', statsLog.audio);
                 console.log('========================');
 
             } catch (error) {