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Add realtime voice selection (#17176)

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- Add realtime voice selection for realtime/start.
- Expose the supported v1/v2 voice lists and cover explicit, configured,
default, and invalid voice paths.
This commit is contained in:
Ahmed Ibrahim
2026-04-08 20:19:15 -07:00
committed by GitHub
parent 4c2a1ae31b
commit 2f9090be62
36 changed files with 860 additions and 33 deletions
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18
codex-rs/codex-api/src/endpoint/realtime_websocket/methods.rs
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@@ -11,6 +11,7 @@ use crate::endpoint::realtime_websocket::protocol::RealtimeSessionConfig;
use crate::endpoint::realtime_websocket::protocol::RealtimeSessionMode;
use crate::endpoint::realtime_websocket::protocol::RealtimeTranscriptDelta;
use crate::endpoint::realtime_websocket::protocol::RealtimeTranscriptEntry;
use crate::endpoint::realtime_websocket::protocol::RealtimeVoice;
use crate::endpoint::realtime_websocket::protocol::parse_realtime_event;
use crate::error::ApiError;
use crate::provider::Provider;
@@ -306,9 +307,10 @@ impl RealtimeWebsocketWriter {
&self,
instructions: String,
session_mode: RealtimeSessionMode,
voice: RealtimeVoice,
) -> Result<(), ApiError> {
let session_mode = normalized_session_mode(self.event_parser, session_mode);
let session = session_update_session(self.event_parser, instructions, session_mode);
let session = session_update_session(self.event_parser, instructions, session_mode, voice);
self.send_json(&RealtimeOutboundMessage::SessionUpdate { session })
.await
}
@@ -577,7 +579,7 @@ impl RealtimeWebsocketClient {
);
connection
.writer
.send_session_update(config.instructions, config.session_mode)
.send_session_update(config.instructions, config.session_mode, config.voice)
.await?;
Ok(connection)
}
@@ -722,6 +724,7 @@ mod tests {
use codex_protocol::protocol::RealtimeHandoffRequested;
use codex_protocol::protocol::RealtimeInputAudioSpeechStarted;
use codex_protocol::protocol::RealtimeResponseCancelled;
use codex_protocol::protocol::RealtimeVoice;
use http::HeaderValue;
use pretty_assertions::assert_eq;
use serde_json::Value;
@@ -1238,7 +1241,7 @@ mod tests {
);
assert_eq!(
first_json["session"]["audio"]["output"]["voice"],
Value::String("fathom".to_string())
Value::String("breeze".to_string())
);
ws.send(Message::Text(
@@ -1371,6 +1374,7 @@ mod tests {
session_id: Some("conv_1".to_string()),
event_parser: RealtimeEventParser::V1,
session_mode: RealtimeSessionMode::Conversational,
voice: RealtimeVoice::Breeze,
},
HeaderMap::new(),
HeaderMap::new(),
@@ -1546,7 +1550,7 @@ mod tests {
);
assert_eq!(
first_json["session"]["audio"]["output"]["voice"],
Value::String("marin".to_string())
Value::String("cedar".to_string())
);
assert_eq!(
first_json["session"]["tools"][0]["type"],
@@ -1644,6 +1648,7 @@ mod tests {
session_id: Some("conv_1".to_string()),
event_parser: RealtimeEventParser::RealtimeV2,
session_mode: RealtimeSessionMode::Conversational,
voice: RealtimeVoice::Cedar,
},
HeaderMap::new(),
HeaderMap::new(),
@@ -1748,6 +1753,7 @@ mod tests {
session_id: Some("conv_1".to_string()),
event_parser: RealtimeEventParser::RealtimeV2,
session_mode: RealtimeSessionMode::Transcription,
voice: RealtimeVoice::Marin,
},
HeaderMap::new(),
HeaderMap::new(),
@@ -1811,7 +1817,7 @@ mod tests {
);
assert_eq!(
first_json["session"]["audio"]["output"]["voice"],
Value::String("fathom".to_string())
Value::String("cove".to_string())
);
assert!(first_json["session"].get("tools").is_none());
@@ -1850,6 +1856,7 @@ mod tests {
session_id: Some("conv_1".to_string()),
event_parser: RealtimeEventParser::V1,
session_mode: RealtimeSessionMode::Transcription,
voice: RealtimeVoice::Cove,
},
HeaderMap::new(),
HeaderMap::new(),
@@ -1938,6 +1945,7 @@ mod tests {
session_id: Some("conv_1".to_string()),
event_parser: RealtimeEventParser::V1,
session_mode: RealtimeSessionMode::Conversational,
voice: RealtimeVoice::Cove,
},
HeaderMap::new(),
HeaderMap::new(),