diff --git a/tools/chatgui-android/video-tests/build.gradle.kts b/tools/chatgui-android/video-tests/build.gradle.kts
index 60b91be5..a1206423 100644
--- a/tools/chatgui-android/video-tests/build.gradle.kts
+++ b/tools/chatgui-android/video-tests/build.gradle.kts
@@ -12,10 +12,14 @@ kotlin {
         kotlin.include("com/utun/chat/VideoHostApp.kt", "com/utun/chat/data/VideoEngineHost.kt",
             "com/utun/chat/data/CallVideoEngine.kt", "com/utun/chat/data/CallVideoBitrateRange.kt",
             "com/utun/chat/data/CallVideoCadence.kt", "com/utun/chat/data/CallVideoOrientation.kt")
+        kotlin.include("com/utun/chat/data/StreamHost.kt", "com/utun/chat/data/StreamPlayerEngine.kt",
+            "com/utun/chat/data/StreamAudioMixer.kt", "com/utun/chat/data/StreamAudioOutput.kt",
+            "com/utun/chat/data/StreamAudioMix.kt", "com/utun/chat/data/StreamReadQueue.kt", "com/utun/chat/data/StreamPlaybackTelemetry.kt")
     }
 }
 dependencies {
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.7.3")
+    implementation("org.json:json:20240303")
     testImplementation("junit:junit:4.13.2")
 }
 tasks.test { testLogging { showStandardStreams = true } }
diff --git a/tools/chatgui-android/video-tests/src/main/kotlin/com/utun/chat/VideoHostApp.kt b/tools/chatgui-android/video-tests/src/main/kotlin/com/utun/chat/VideoHostApp.kt
index 276aba5b..7af82190 100644
--- a/tools/chatgui-android/video-tests/src/main/kotlin/com/utun/chat/VideoHostApp.kt
+++ b/tools/chatgui-android/video-tests/src/main/kotlin/com/utun/chat/VideoHostApp.kt
@@ -7,4 +7,10 @@ object ChatApplication { val instance = VideoHostApplication() }
 class VideoHostApplication {
     val configProvider = VideoHostConfig()
 }
-object R { object string { const val call_video_unavailable = 1; const val call_video_mode_restored = 2 } }
+object R { object string {
+    const val call_video_unavailable = 1; const val call_video_mode_restored = 2
+    const val stream_ended = 3; const val stream_connecting = 4; const val stream_live = 5; const val stream_waiting_key = 6
+    const val stream_waiting_decoder = 7; const val stream_group_closed = 8; const val chat_service_stopped = 9
+    const val stream_source_changed = 10; const val stream_member_removed = 11; const val stream_failed = 12
+    const val stream_decoder_unsupported = 13
+} }
diff --git a/tools/chatgui-android/video-tests/src/main/kotlin/com/utun/chat/data/VideoHost.kt b/tools/chatgui-android/video-tests/src/main/kotlin/com/utun/chat/data/VideoHost.kt
index 8a67bb1e..418d3732 100644
--- a/tools/chatgui-android/video-tests/src/main/kotlin/com/utun/chat/data/VideoHost.kt
+++ b/tools/chatgui-android/video-tests/src/main/kotlin/com/utun/chat/data/VideoHost.kt
@@ -17,6 +17,7 @@ object LogManager {
         entries.add(Entry(level, category, message)); System.err.println("[$level] [$category] $message")
     }
     fun videoTrace(message: String) { addLog("DEBUG", "video", message) }
+    fun videoDebug(message: String) { addLog("DEBUG", "video", message) }
 }
 
 /** Граница аппаратной пробы; сам RX и разбор uAV2 KEY компилируются из приложения. */
@@ -64,6 +65,33 @@ internal class CallVideoCodec(val format: CallVideoFormat, var bitrate: Int, val
 object NativeLib {
     fun callAudioClock(id: Long, now: Long, out: LongArray): Boolean { out[5] = 1; return true }
     fun setChatSetting(name: String, value: String) {}
+    fun isReady() = true
+    fun streamOpen(id: Long, group: Long, source: Long, audio: Boolean, epoch: Long) = HostStreams.open(id)
+    fun streamStop(id: Long) = HostStreams.stop(id)
+    fun streamSignalCreate(id: Long) = HostStreams.createSignal()
+    fun streamSignalClose(handle: Long) = HostStreams.closeSignal(handle)
+    fun streamSignalNotify(handle: Long) = HostStreams.notifySignal(handle)
+    fun streamSignalWait(handle: Long, timeout: Int) = HostStreams.waitSignal(handle)
+    fun streamStatus(id: Long): LongArray? = if (HostStreams.status)
+        longArrayOf(10_000_000, 10_000_000, 10_000_000, 1000, 1, if (HostStreams.audioEnabled) 3 else 1) else null
+    fun streamPull(id: Long, position: Long, video: Int, audioAhead: Long, count: Int): ByteArray? {
+        HostStreams.onPull(); HostStreams.access("pull"); return HostStreams.records.poll()
+    }
+    fun streamTelemetry(id: Long): ByteArray? = null
+    fun streamResync(id: Long): Boolean { HostStreams.access("resync"); return true }
+    fun streamPlaybackCreate(id: Long, pts: Long, audio: Boolean) = HostStreams.createPlayback()
+    fun streamPlaybackClose(handle: Long) = HostStreams.closePlayback(handle)
+    fun streamPlaybackEmpty(handle: Long) = true
+    fun streamPlaybackNeedsInput(handle: Long) = true
+    fun streamPlaybackBuffered(handle: Long) = 0
+    fun streamPlaybackPrepare(handle: Long) = 0
+    fun streamPlaybackFeed(handle: Long, pts: Long, packet: ByteArray): Int { HostStreams.access("feed"); return 0 }
+    fun streamPlaybackFinish(handle: Long) {}
+    fun streamPlaybackPull(handle: Long, pcm: ShortArray, frames: Int, limit: Long) = frames
+    fun streamPlaybackSilence(handle: Long, frames: Int) {}
+    fun streamPlaybackUpdate(handle: Long, now: Long, played: Long, ready: Long, guard: Long, starved: Boolean): LongArray {
+        HostStreams.access("update"); return longArrayOf(1000 + played * 1_000_000 / 48_000, 0, 0, 1000, 0, 1, 0, 0, 3, 0, 0)
+    }
 }
 
 /** Native playout/encoded FIFO: только управляемые границы, без загрузки JNI/декодирования/сетевого ядра. */