added prompt ack event and updated setPrompt

decart/lipsync/client.py

@@ -23,7 +23,6 @@
 
 
 class RealtimeLipsyncClient:
-
     DECART_LIPSYNC_ENDPOINT = "/router/lipsync/ws"
     VIDEO_FPS = 25
 

decart/realtime/client.py

@@ -1,4 +1,5 @@
 from typing import Callable, Optional
+import asyncio
 import logging
 import uuid
 from aiortc import MediaStreamTrack
@@ -81,7 +82,23 @@ def _emit_error(self, error: DecartSDKError) -> None:
     async def set_prompt(self, prompt: str, enrich: bool = True) -> None:
         if not prompt or not prompt.strip():
             raise InvalidInputError("Prompt cannot be empty")
-        await self._manager.send_message(PromptMessage(type="prompt", prompt=prompt))
+
+        event, result = self._manager.register_prompt_wait(prompt)
+
+        try:
+            await self._manager.send_message(
+                PromptMessage(type="prompt", prompt=prompt, enhance_prompt=enrich)
+            )
+
+            try:
+                await asyncio.wait_for(event.wait(), timeout=15.0)
+            except asyncio.TimeoutError:
+                raise DecartSDKError("Prompt acknowledgment timed out")
+
+            if not result["success"]:
+                raise DecartSDKError(result["error"] or "Prompt failed")
+        finally:
+            self._manager.unregister_prompt_wait(prompt)
 
     def is_connected(self) -> bool:
         return self._manager.is_connected()

decart/realtime/messages.py

@@ -1,4 +1,4 @@
-from typing import Literal, Union, Annotated
+from typing import Literal, Optional, Union, Annotated
 from pydantic import BaseModel, Field, TypeAdapter
 
 try:
@@ -42,9 +42,18 @@ class SessionIdMessage(BaseModel):
     server_ip: str
 
 
+class PromptAckMessage(BaseModel):
+    """Acknowledgment for prompt update from server."""
+
+    type: Literal["prompt_ack"]
+    prompt: str
+    success: bool
+    error: Optional[str] = None
+
+
 # Discriminated union for incoming messages
 IncomingMessage = Annotated[
-    Union[AnswerMessage, IceCandidateMessage, SessionIdMessage],
+    Union[AnswerMessage, IceCandidateMessage, SessionIdMessage, PromptAckMessage],
     Field(discriminator="type"),
 ]
 
@@ -67,6 +76,7 @@ class PromptMessage(BaseModel):
 
     type: Literal["prompt"]
     prompt: str
+    enhance_prompt: bool = True
 
 
 # Outgoing message union (no discriminator needed - we know what we're sending)

decart/realtime/webrtc_connection.py

@@ -21,6 +21,7 @@
     OfferMessage,
     IceCandidateMessage,
     IceCandidatePayload,
+    PromptAckMessage,
     OutgoingMessage,
 )
 from .types import ConnectionState
@@ -36,7 +37,6 @@ def __init__(
         on_error: Optional[Callable[[Exception], None]] = None,
         customize_offer: Optional[Callable] = None,
     ):
-
         self._pc: Optional[RTCPeerConnection] = None
         self._ws: Optional[aiohttp.ClientWebSocketResponse] = None
         self._session: Optional[aiohttp.ClientSession] = None
@@ -47,6 +47,7 @@ def __init__(
         self._customize_offer = customize_offer
         self._ws_task: Optional[asyncio.Task] = None
         self._ice_candidates_queue: list[RTCIceCandidate] = []
+        self._pending_prompts: dict[str, tuple[asyncio.Event, dict]] = {}
 
     async def connect(
         self,
@@ -176,6 +177,8 @@ async def _handle_message(self, data: dict) -> None:
             await self._handle_ice_candidate(message.candidate)
         elif message.type == "session_id":
             logger.debug(f"Session ID: {message.session_id}")
+        elif message.type == "prompt_ack":
+            self._handle_prompt_ack(message)
 
     async def _handle_answer(self, sdp: str) -> None:
         logger.debug("Received answer from server")
@@ -207,6 +210,23 @@ async def _handle_ice_candidate(self, candidate_data: IceCandidatePayload) -> No
             logger.debug("Queuing ICE candidate (no remote description yet)")
             self._ice_candidates_queue.append(candidate)
 
+    def _handle_prompt_ack(self, message: PromptAckMessage) -> None:
+        logger.debug(f"Received prompt_ack for: {message.prompt}, success: {message.success}")
+        if message.prompt in self._pending_prompts:
+            event, result = self._pending_prompts[message.prompt]
+            result["success"] = message.success
+            result["error"] = message.error
+            event.set()
+
+    def register_prompt_wait(self, prompt: str) -> tuple[asyncio.Event, dict]:
+        event = asyncio.Event()
+        result: dict = {"success": False, "error": None}
+        self._pending_prompts[prompt] = (event, result)
+        return event, result
+
+    def unregister_prompt_wait(self, prompt: str) -> None:
+        self._pending_prompts.pop(prompt, None)
+
     async def _send_message(self, message: OutgoingMessage) -> None:
         if not self._ws or self._ws.closed:
             raise RuntimeError("WebSocket not connected")

decart/realtime/webrtc_manager.py

@@ -1,3 +1,4 @@
+import asyncio
 import logging
 from typing import Optional, Callable
 from dataclasses import dataclass
@@ -84,3 +85,9 @@ def is_connected(self) -> bool:
 
     def get_connection_state(self) -> ConnectionState:
         return self._connection.state
+
+    def register_prompt_wait(self, prompt: str) -> tuple[asyncio.Event, dict]:
+        return self._connection.register_prompt_wait(prompt)
+
+    def unregister_prompt_wait(self, prompt: str) -> None:
+        self._connection.unregister_prompt_wait(prompt)

examples/lipsync_file.py

@@ -72,7 +72,6 @@ async def process_lipsync(video_path: str, audio_path: str, output_path: str):
         )
         for i in range(frame_count):
             try:
-
                 video_frame, audio_frame = await client.get_synced_output(timeout=1.0)
                 bgr_frame = cv2.cvtColor(video_frame, cv2.COLOR_RGB2BGR)
                 out.write(bgr_frame)

examples/realtime_synthetic.py

@@ -126,7 +126,11 @@ def on_error(error):
                 await asyncio.sleep(5)
 
                 print("\n🎨 Changing style to 'Cyberpunk city'...")
-                await realtime_client.set_prompt("Cyberpunk city")
+                try:
+                    await realtime_client.set_prompt("Cyberpunk city")
+                    print("✓ Prompt set successfully")
+                except Exception as e:
+                    print(f"⚠️ Failed to set prompt: {e}")
 
                 await asyncio.sleep(5)
 

tests/test_realtime_unit.py

@@ -44,13 +44,23 @@ def test_realtime_models_available():
 @pytest.mark.asyncio
 async def test_realtime_client_creation_with_mock():
     """Test client creation with mocked WebRTC"""
+    import asyncio
+
     client = DecartClient(api_key="test-key")
 
     with patch("decart.realtime.client.WebRTCManager") as mock_manager_class:
         mock_manager = AsyncMock()
         mock_manager.connect = AsyncMock(return_value=True)
         mock_manager.is_connected = MagicMock(return_value=True)
         mock_manager.get_connection_state = MagicMock(return_value="connected")
+        mock_manager.send_message = AsyncMock()
+
+        prompt_event = asyncio.Event()
+        prompt_result = {"success": True, "error": None}
+        prompt_event.set()
+
+        mock_manager.register_prompt_wait = MagicMock(return_value=(prompt_event, prompt_result))
+        mock_manager.unregister_prompt_wait = MagicMock()
         mock_manager_class.return_value = mock_manager
 
         mock_track = MagicMock()
@@ -76,13 +86,24 @@ async def test_realtime_client_creation_with_mock():
 
 @pytest.mark.asyncio
 async def test_realtime_set_prompt_with_mock():
-    """Test set_prompt with mocked WebRTC"""
+    """Test set_prompt with mocked WebRTC and prompt_ack"""
+    import asyncio
+
     client = DecartClient(api_key="test-key")
 
     with patch("decart.realtime.client.WebRTCManager") as mock_manager_class:
         mock_manager = AsyncMock()
         mock_manager.connect = AsyncMock(return_value=True)
         mock_manager.send_message = AsyncMock()
+
+        prompt_event = asyncio.Event()
+        prompt_result = {"success": True, "error": None}
+
+        def register_prompt_wait(prompt):
+            return prompt_event, prompt_result
+
+        mock_manager.register_prompt_wait = MagicMock(side_effect=register_prompt_wait)
+        mock_manager.unregister_prompt_wait = MagicMock()
         mock_manager_class.return_value = mock_manager
 
         mock_track = MagicMock()
@@ -99,12 +120,19 @@ async def test_realtime_set_prompt_with_mock():
             ),
         )
 
+        async def set_event():
+            await asyncio.sleep(0.01)
+            prompt_event.set()
+
+        asyncio.create_task(set_event())
         await realtime_client.set_prompt("New prompt")
 
-        mock_manager.send_message.assert_called_once()
+        mock_manager.send_message.assert_called()
         call_args = mock_manager.send_message.call_args[0][0]
         assert call_args.type == "prompt"
         assert call_args.prompt == "New prompt"
+        assert call_args.enhance_prompt is True
+        mock_manager.unregister_prompt_wait.assert_called_with("New prompt")
 
 
 @pytest.mark.asyncio
@@ -152,3 +180,101 @@ def on_error(error):
         realtime_client._emit_error(test_error)
         assert len(errors) == 1
         assert errors[0].message == "Test error"
+
+
+@pytest.mark.asyncio
+async def test_realtime_set_prompt_timeout():
+    """Test set_prompt raises on timeout"""
+    import asyncio
+
+    client = DecartClient(api_key="test-key")
+
+    with patch("decart.realtime.client.WebRTCManager") as mock_manager_class:
+        mock_manager = AsyncMock()
+        mock_manager.connect = AsyncMock(return_value=True)
+        mock_manager.send_message = AsyncMock()
+
+        prompt_event = asyncio.Event()
+        prompt_result = {"success": False, "error": None}
+
+        def register_prompt_wait(prompt):
+            return prompt_event, prompt_result
+
+        mock_manager.register_prompt_wait = MagicMock(side_effect=register_prompt_wait)
+        mock_manager.unregister_prompt_wait = MagicMock()
+        mock_manager_class.return_value = mock_manager
+
+        mock_track = MagicMock()
+
+        from decart.realtime.types import RealtimeConnectOptions
+
+        realtime_client = await RealtimeClient.connect(
+            base_url=client.base_url,
+            api_key=client.api_key,
+            local_track=mock_track,
+            options=RealtimeConnectOptions(
+                model=models.realtime("mirage"),
+                on_remote_stream=lambda t: None,
+            ),
+        )
+
+        from decart.errors import DecartSDKError
+
+        # Mock asyncio.wait_for to immediately raise TimeoutError
+        with patch("asyncio.wait_for", side_effect=asyncio.TimeoutError):
+            with pytest.raises(DecartSDKError) as exc_info:
+                await realtime_client.set_prompt("New prompt")
+
+        assert "timed out" in str(exc_info.value)
+        mock_manager.unregister_prompt_wait.assert_called_with("New prompt")
+
+
+@pytest.mark.asyncio
+async def test_realtime_set_prompt_server_error():
+    """Test set_prompt raises on server error"""
+    import asyncio
+
+    client = DecartClient(api_key="test-key")
+
+    with patch("decart.realtime.client.WebRTCManager") as mock_manager_class:
+        mock_manager = AsyncMock()
+        mock_manager.connect = AsyncMock(return_value=True)
+        mock_manager.send_message = AsyncMock()
+
+        prompt_event = asyncio.Event()
+        prompt_result = {"success": False, "error": "Server rejected prompt"}
+
+        def register_prompt_wait(prompt):
+            return prompt_event, prompt_result
+
+        mock_manager.register_prompt_wait = MagicMock(side_effect=register_prompt_wait)
+        mock_manager.unregister_prompt_wait = MagicMock()
+        mock_manager_class.return_value = mock_manager
+
+        mock_track = MagicMock()
+
+        from decart.realtime.types import RealtimeConnectOptions
+
+        realtime_client = await RealtimeClient.connect(
+            base_url=client.base_url,
+            api_key=client.api_key,
+            local_track=mock_track,
+            options=RealtimeConnectOptions(
+                model=models.realtime("mirage"),
+                on_remote_stream=lambda t: None,
+            ),
+        )
+
+        async def set_event():
+            await asyncio.sleep(0.01)
+            prompt_event.set()
+
+        asyncio.create_task(set_event())
+
+        from decart.errors import DecartSDKError
+
+        with pytest.raises(DecartSDKError) as exc_info:
+            await realtime_client.set_prompt("New prompt")
+
+        assert "Server rejected prompt" in str(exc_info.value)
+        mock_manager.unregister_prompt_wait.assert_called_with("New prompt")