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Merged
merged 1 commit into from
Jul 12, 2025
Merged

Add tests for openai realtime model #1081

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133 changes: 76 additions & 57 deletions src/agents/realtime/openai_realtime.py
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Original file line number Diff line number Diff line change
Expand Up @@ -9,9 +9,11 @@
from typing import Any, Callable

import websockets
from openai.types.beta.realtime.conversation_item import ConversationItem
from openai.types.beta.realtime.realtime_server_event import (
RealtimeServerEvent as OpenAIRealtimeServerEvent,
)
from openai.types.beta.realtime.response_audio_delta_event import ResponseAudioDeltaEvent
from pydantic import TypeAdapter
from websockets.asyncio.client import ClientConnection

Expand Down Expand Up @@ -233,6 +235,77 @@ async def interrupt(self) -> None:
self._audio_length_ms = 0.0
self._current_audio_content_index = None

async def _handle_audio_delta(self, parsed: ResponseAudioDeltaEvent) -> None:
"""Handle audio delta events and update audio tracking state."""
self._current_audio_content_index = parsed.content_index
self._current_item_id = parsed.item_id
if self._audio_start_time is None:
self._audio_start_time = datetime.now()
self._audio_length_ms = 0.0

audio_bytes = base64.b64decode(parsed.delta)
# Calculate audio length in ms using 24KHz pcm16le
self._audio_length_ms += self._calculate_audio_length_ms(audio_bytes)
await self._emit_event(
RealtimeModelAudioEvent(data=audio_bytes, response_id=parsed.response_id)
)

def _calculate_audio_length_ms(self, audio_bytes: bytes) -> float:
"""Calculate audio length in milliseconds for 24KHz PCM16LE format."""
return len(audio_bytes) / 24 / 2

async def _handle_output_item(self, item: ConversationItem) -> None:
"""Handle response output item events (function calls and messages)."""
if item.type == "function_call" and item.status == "completed":
tool_call = RealtimeToolCallItem(
item_id=item.id or "",
previous_item_id=None,
type="function_call",
# We use the same item for tool call and output, so it will be completed by the
# output being added
status="in_progress",
arguments=item.arguments or "",
name=item.name or "",
output=None,
)
await self._emit_event(RealtimeModelItemUpdatedEvent(item=tool_call))
await self._emit_event(
RealtimeModelToolCallEvent(
call_id=item.id or "",
name=item.name or "",
arguments=item.arguments or "",
id=item.id or "",
)
)
elif item.type == "message":
# Handle message items from output_item events (no previous_item_id)
message_item: RealtimeMessageItem = TypeAdapter(RealtimeMessageItem).validate_python(
{
"item_id": item.id or "",
"type": item.type,
"role": item.role,
"content": item.content,
"status": "in_progress",
}
)
await self._emit_event(RealtimeModelItemUpdatedEvent(item=message_item))

async def _handle_conversation_item(
self, item: ConversationItem, previous_item_id: str | None
) -> None:
"""Handle conversation item creation/retrieval events."""
message_item: RealtimeMessageItem = TypeAdapter(RealtimeMessageItem).validate_python(
{
"item_id": item.id or "",
"previous_item_id": previous_item_id,
"type": item.type,
"role": item.role,
"content": item.content,
"status": "in_progress",
}
)
await self._emit_event(RealtimeModelItemUpdatedEvent(item=message_item))

async def close(self) -> None:
"""Close the session."""
if self._websocket:
Expand All @@ -258,18 +331,7 @@ async def _handle_ws_event(self, event: dict[str, Any]):
return

if parsed.type == "response.audio.delta":
self._current_audio_content_index = parsed.content_index
self._current_item_id = parsed.item_id
if self._audio_start_time is None:
self._audio_start_time = datetime.now()
self._audio_length_ms = 0.0

audio_bytes = base64.b64decode(parsed.delta)
# Calculate audio length in ms using 24KHz pcm16le
self._audio_length_ms += len(audio_bytes) / 24 / 2
await self._emit_event(
RealtimeModelAudioEvent(data=audio_bytes, response_id=parsed.response_id)
)
await self._handle_audio_delta(parsed)
elif parsed.type == "response.audio.done":
await self._emit_event(RealtimeModelAudioDoneEvent())
elif parsed.type == "input_audio_buffer.speech_started":
Expand All @@ -291,21 +353,10 @@ async def _handle_ws_event(self, event: dict[str, Any]):
parsed.type == "conversation.item.created"
or parsed.type == "conversation.item.retrieved"
):
item = parsed.item
previous_item_id = (
parsed.previous_item_id if parsed.type == "conversation.item.created" else None
)
message_item: RealtimeMessageItem = TypeAdapter(RealtimeMessageItem).validate_python(
{
"item_id": item.id or "",
"previous_item_id": previous_item_id,
"type": item.type,
"role": item.role,
"content": item.content,
"status": "in_progress",
}
)
await self._emit_event(RealtimeModelItemUpdatedEvent(item=message_item))
await self._handle_conversation_item(parsed.item, previous_item_id)
elif (
parsed.type == "conversation.item.input_audio_transcription.completed"
or parsed.type == "conversation.item.truncated"
Expand Down Expand Up @@ -341,36 +392,4 @@ async def _handle_ws_event(self, event: dict[str, Any]):
parsed.type == "response.output_item.added"
or parsed.type == "response.output_item.done"
):
item = parsed.item
if item.type == "function_call" and item.status == "completed":
tool_call = RealtimeToolCallItem(
item_id=item.id or "",
previous_item_id=None,
type="function_call",
# We use the same item for tool call and output, so it will be completed by the
# output being added
status="in_progress",
arguments=item.arguments or "",
name=item.name or "",
output=None,
)
await self._emit_event(RealtimeModelItemUpdatedEvent(item=tool_call))
await self._emit_event(
RealtimeModelToolCallEvent(
call_id=item.id or "",
name=item.name or "",
arguments=item.arguments or "",
id=item.id or "",
)
)
elif item.type == "message":
message_item = TypeAdapter(RealtimeMessageItem).validate_python(
{
"item_id": item.id or "",
"type": item.type,
"role": item.role,
"content": item.content,
"status": "in_progress",
}
)
await self._emit_event(RealtimeModelItemUpdatedEvent(item=message_item))
await self._handle_output_item(parsed.item)
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