feat：计算视频帧传来的差值

frontend/src/types.ts

@@ -32,6 +32,15 @@ export interface VideoStatus {
   fps: number
   frame_dir: string
   source_detail?: string
+  timing?: {
+    available: boolean
+    latest_delta_ms: number | null
+    delta_samples_ms: number[]
+    sample_count: number
+    sample_window_size: number
+    timestamp_unit: string | null
+    timestamp_endianness: string | null
+  }
   receiver?: {
     backend_ready: boolean
     mode: string
@@ -45,6 +54,15 @@ export interface VideoStatus {
     relay_via?: string
     peer_id?: string
     buffer_bytes?: number
+    timing?: {
+      available: boolean
+      latest_delta_ms: number | null
+      delta_samples_ms: number[]
+      sample_count: number
+      sample_window_size: number
+      timestamp_unit: string | null
+      timestamp_endianness: string | null
+    }
   }
 }