mirror of
https://github.com/bilawalsidhu/gods-eye-view.git
synced 2026-11-04 02:14:01 +00:00
Sameh Khamis
1c727842df
in push-to-talk, answer a Gemini tool call that arrives with no input, reply or tool result outstanding with a failure instead of running it, and refuse every other call in the reply it starts, including one after unprompted speech; the reply stays tracked so the next input retires it and its late boundary cannot close the user's turn in push-to-talk, a caption that arrives after its turn ended no longer opens a reply, so the next request is not retired with its tool calls discarded open mic cannot tell either case from a new reply and stays unchanged check packet ownership after the narration callback before queuing tools, and raise the per-connection call history to 4096 IDs move the pointer turn event, context item and announcement into pointerContext so the OpenAI and Gemini controllers share them, and drop the Gemini token route's copy of the shared exact-Origin comparison
2512 lines
85 KiB
JavaScript
2512 lines
85 KiB
JavaScript
import { t, translateKnown } from '../i18n/index.js';
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import { msg } from '../i18n/marker.js';
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import { createGeminiAudio } from './geminiAudio.js';
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import { RealtimeInput } from './realtimeInput.js';
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import { RealtimeRadio } from './realtimeRadio.js';
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import { captureViewportImage } from './realtimeViewport.js';
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import { createNarrationScheduler } from './narration.js';
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import { createEarcon } from './earcon.js';
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import { narrationLabel } from './speech.js';
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import { waitForSignal } from '../sources/requestDeadline.js';
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import { readResponseJsonCapped } from '../sources/httpBody.js';
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import { readLayerLifecycleSummary } from './layerSummary.js';
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import {
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POINTER_OPEN_MIC_RECENT_MS,
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pointerAnnouncement,
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pointerTurnContext,
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pointerTurnEvent,
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} from './pointerContext.js';
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import {
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hasStructuredViewIdentity,
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shouldSendViewportImage,
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shouldStopVoiceAfterRadioTool,
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responseInstructionForToolResult,
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} from './realtimeProtocol.js';
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const SOCKET_PATH =
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/^\/ws\/google\.ai\.generativelanguage\.v1(?:alpha|beta)\.GenerativeService\.BidiGenerateContentConstrained$/;
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const MAX_BUFFERED_BYTES = 256 * 1024;
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const MAX_CONTROL_BYTES = 1024 * 1024;
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const MAX_CONTROL_MESSAGES = 64;
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const CONTROL_PRESSURE_TIMEOUT_MS = 5_000;
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const CONTROL_POLL_MS = 25;
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const MAX_GO_AWAY_MS = 10 * 60 * 1000;
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const MAX_MESSAGE_LENGTH = 3 * 1024 * 1024;
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const MAX_TOOL_CALLS = 16;
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const MAX_SEEN_CALLS = 4096;
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const MAX_CALL_ID_LENGTH = 1024;
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const MAX_MAP_EVENTS = 16;
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const MAX_MAP_CONTEXT_LENGTH = 16000;
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/** Only an ephemeral token can be attached to the fixed Google Live endpoint. */
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export function geminiSocketUrl({ token, websocketUrl }) {
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if (
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typeof token !== 'string' ||
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!token.startsWith('auth_tokens/') ||
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token.length > 8192
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)
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throw new Error(
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msg('Gemini token response did not include an ephemeral credential'),
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);
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let url;
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try {
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url = new URL(websocketUrl);
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} catch {
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throw new Error(msg('Invalid Gemini connection endpoint'));
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}
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if (
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url.protocol !== 'wss:' ||
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url.hostname !== 'generativelanguage.googleapis.com' ||
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url.port ||
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url.username ||
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url.password ||
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url.search ||
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url.hash ||
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!SOCKET_PATH.test(url.pathname)
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)
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throw new Error(msg('Invalid Gemini connection endpoint'));
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url.searchParams.set('access_token', token);
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return url.href;
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}
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// Known local-server failures are translated; unexpected diagnostics stay intact.
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function tokenErrorMessage(error) {
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switch (error) {
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case msg('Gemini voice could not connect. Try again.'):
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case msg('Gemini voice requires a same-origin app request'):
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case msg('Add a Gemini API key in Provider Settings'):
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case msg('The Gemini Live model configuration is invalid'):
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case msg('Gemini voice is starting too often. Try again shortly.'):
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case msg('Gemini quota is unavailable. Try again later.'):
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case msg('Gemini access was refused. Check the API key and model access.'):
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case msg('Gemini Live is unavailable for the configured model.'):
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case msg('Token request is too large'):
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case msg('Use an empty JSON token request'):
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case msg('Method not allowed'):
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return t(error);
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default:
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return error;
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}
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}
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function validCallId(id) {
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return (
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typeof id === 'string' &&
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id.length > 0 &&
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id.length <= MAX_CALL_ID_LENGTH &&
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id.trim().length > 0 &&
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!/[\u0000-\u001f\u007f]/u.test(id)
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);
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}
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function cancelled() {
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return new DOMException('Voice operation cancelled', 'AbortError');
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}
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// Match the existing OpenAI/Radio classification; transport ownership stays local.
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function classifyGeminiTool(name, args = {}) {
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const radioControl = name === 'control_radio';
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const radioVisibility =
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name === 'set_layer_visibility' && args.layerId === 'radio';
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const radioAction = radioControl
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? String(args.action || '').toLowerCase()
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: null;
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const authorityDomain =
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radioVisibility || ['enable', 'disable'].includes(radioAction)
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? 'visibility'
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: radioAction === 'status'
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? 'query'
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: radioControl
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? 'playback'
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: null;
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const stronger =
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(radioControl && ['disable', 'pause', 'stop'].includes(radioAction)) ||
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(radioVisibility && args.enabled === false);
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return {
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radioControl,
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radioVisibility,
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authorityDomain,
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stronger,
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abortScope:
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radioAction === 'disable' || radioVisibility ? 'all' : 'playback',
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};
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}
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/** Gemini owns its socket/media; the common session owns action authorization. */
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export class GeminiSessionController {
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constructor({
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emit,
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runAction,
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signal,
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ui,
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radioLayer = null,
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dataManager = null,
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pointer = null,
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tokenEndpoint = '/api/gemini/token',
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startupTimeoutMs = 30_000,
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inputBoundaryTimeoutMs = 5_000,
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fetchImpl = (...args) => fetch(...args),
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WebSocketClass = globalThis.WebSocket,
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getUserMedia = (settings) => navigator.mediaDevices.getUserMedia(settings),
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createAudio = createGeminiAudio,
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createInput = (settings) => new RealtimeInput(settings),
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createNarration = createNarrationScheduler,
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createProgressEarcon = createEarcon,
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captureViewport = captureViewportImage,
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now = () => Date.now(),
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setTimer = setTimeout,
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clearTimer = clearTimeout,
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}) {
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Object.assign(this, {
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emit,
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runAction,
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signal,
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ui,
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tokenEndpoint,
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startupTimeoutMs,
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inputBoundaryTimeoutMs,
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fetchImpl,
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WebSocketClass,
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getUserMedia,
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createAudio,
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captureViewport,
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pointer,
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radioLayer,
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dataManager,
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now,
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// Browser timer functions reject the controller as their receiver.
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setTimer: (...args) => setTimer(...args),
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clearTimer: (...args) => clearTimer(...args),
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});
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this.status = 'idle';
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this.model = null;
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this.epoch = 0;
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this.turn = 0;
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this.inputGeneration = 0;
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this.turnAbort = new AbortController();
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this.disposed = false;
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this.socket = null;
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this.channel = null;
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this.stream = null;
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this.audio = null;
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this.abort = null;
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this.tools = new Map();
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this.radioPlaybackCalls = new WeakMap();
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this.seenCalls = new Set();
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this.cancelledCalls = new Set();
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this.toolQueue = Promise.resolve();
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this.pendingTools = 0;
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this.modelComplete = false;
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this.pendingCompletionStatus = null;
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this.postToolOutput = false;
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this.stopAfterReply = false;
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this.modelSpoke = false;
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this.transcripts = { assistant: '' };
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this.pendingMapEvents = [];
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this.userTurnPending = false;
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// Live output has no response ID. A locally retired reply keeps ownership
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// of incoming output until its ordered server turnComplete boundary.
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this.replyPending = false;
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// A reply Gemini started without a request; it gets no tool authority.
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this.unrequestedReply = false;
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this.automaticTurnOpen = false;
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this.automaticActivityOwner = null;
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this.retiredAutomaticActivityOwner = null;
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this.automaticActivitySequence = 0;
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this.retiredReplyPending = false;
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this.deferredInput = null;
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this.retiredBoundaryWait = null;
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this.forwardedActivityOpen = false;
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this.forwardedCaptureId = null;
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this.captureGeneration = 0;
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this.captureEnabled = false;
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this.pttPlaybackSuppressed = false;
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this.microphoneRequested = false;
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this.captureOwner = null;
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this.userActivityOpen = false;
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this.pointerSentKey = null;
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this.pointerAnnounced = null;
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this.pendingPointerContext = null;
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this.typedIntent = null;
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this.toolSequence = 0;
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this.radioStrongerCommit = null;
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this.intentSequence = 0;
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this.intentItemId = null;
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this.intentResponseId = null;
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this.intentCaptureId = null;
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this.controlQueue = [];
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this.controlBytes = 0;
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this.controlTimer = null;
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this.goAway = null;
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this.droppedAudioChunks = 0;
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this.deferredAudioDrops = { nonPttOwner: 0, closedActivity: 0 };
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this.droppedImages = 0;
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this.lastClose = null;
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this.lastError = null;
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this.completedTurns = 0;
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this.lastAudio = null;
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this.lastViewportAt = -Infinity;
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this.input = createInput({
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readUi: () => ui,
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readStream: () => this.stream,
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readStatus: () => this.status,
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operations: {
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isActive: () => this.isActive(),
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start: (settings) => this.start(settings),
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setStatus: (...args) => this.setStatus(...args),
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pauseRadioForVoice: () => this.radio.pauseRadioForVoice(),
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bargeIn: () => this.claimPttPlayback(),
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holdPointer: () => {
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this.heldPointerSnapshot = this.pointer?.hold('keydown');
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},
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releasePointerHold: () => this.pointer?.releaseHold(),
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beginPointerTurn: (at) =>
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this.input.pushToTalkMode && at === 'keydown'
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? this.heldPointerSnapshot
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: this.beginPointerTurn(at),
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mayClaimSpeaker: () => this.radio.mayVoiceClaimSpeaker(),
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},
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});
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const setMicrophoneEnabled = this.input.setMicrophoneEnabled.bind(
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this.input,
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);
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this.applyMicrophoneEnabled = (enabled) => {
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enabled = Boolean(enabled) && !this.goAway;
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setMicrophoneEnabled(enabled);
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if (enabled && !this.captureEnabled) {
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// The physical gate owns this generation, independently of tool turns.
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this.captureOwner = {
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captureId: ++this.captureGeneration,
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context: null,
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snapshot: this.heldPointerSnapshot,
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retired: false,
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admitted: false,
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settled: false,
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};
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}
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this.captureEnabled = enabled;
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const metadata = this.captureOwner
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? { captureId: this.captureOwner.captureId }
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: null;
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this.audio?.setMicrophoneEnabled(enabled, metadata);
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if (enabled && this.channel?.readyState === 'open') {
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if (this.input.pushToTalkMode) this.radio.cancelRadioHandoff();
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else this.noteUserActivity();
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}
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};
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this.input.setMicrophoneEnabled = (enabled) => {
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this.microphoneRequested = Boolean(enabled) && !this.goAway;
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this.applyMicrophoneEnabled(this.microphoneRequested);
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};
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this.radio = new RealtimeRadio({
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readRadioLayer: () => radioLayer,
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readDataManager: () => dataManager,
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readChannel: () => this.channel,
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readUserTurnPending: () => this.userTurnPending,
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readSessionId: () => `gemini-${this.epoch}`,
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operations: {
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abortTools: () => this.abortTools(),
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isActive: () => this.isActive(),
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stop: (settings) => this.stop(settings),
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setStatus: (...args) => this.setStatus(...args),
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// The shared Radio owner already surfaces a failed start in the UI.
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queueResponseCreate: () => {},
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debugLog: () => {},
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},
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});
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this.earcon = createProgressEarcon({
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isMicrophoneMuted: () =>
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Boolean(
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this.isActive() &&
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this.channel?.readyState === 'open' &&
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this.input.pushToTalkMode &&
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!this.input.pushToTalkKeyHeld &&
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this.stream &&
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this.stream.getAudioTracks().every((track) => !track.enabled) &&
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!this.audio?.pending &&
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this.radio.mayVoiceClaimSpeaker(),
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),
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});
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this.narration = createNarration({
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// Live clientContent interrupts generation, even with turnComplete:false.
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// Reuse shared progress timing and muted-PTT earcons without injecting a
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// second conversation turn. The model's own preamble supplies speech.
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speak: () => false,
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earcon: this.earcon,
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canSpeak: () => false,
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});
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this.radio.observe();
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this.lifetimeAbort = () => this.stop({ removeUi: true });
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signal?.addEventListener('abort', this.lifetimeAbort, { once: true });
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}
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get spaceKeyHeld() {
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return this.input.spaceKeyHeld;
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}
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isActive() {
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return !['idle', 'error'].includes(this.status);
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}
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owns(epoch) {
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return (
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!this.disposed && epoch === this.epoch && !this.abort?.signal.aborted
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);
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}
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setStatus(status, detail, recovery) {
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this.status = status;
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if (status === 'listening' && this.input.pushToTalkMode)
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detail = this.input.pushToTalkKeyHeld
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? msg('Release Space to send')
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: msg('Hold Space to talk');
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const event = {
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type: 'state',
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state: status,
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detail: translateKnown(detail),
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};
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if (recovery) event.recovery = translateKnown(recovery);
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this.emit(event);
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this.input.updateVoiceButtonLabel();
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if (['idle', 'connecting', 'error'].includes(status))
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this.input.setVoiceSpeaker('idle');
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}
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send(
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message,
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{
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beforeSetup = false,
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captureId = null,
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onSent = null,
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durable = false,
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} = {},
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) {
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if (
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this.socket?.readyState !== 1 ||
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(!beforeSetup && this.channel?.readyState !== 'open')
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)
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return false;
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const body = JSON.stringify(message);
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const bytes = new TextEncoder().encode(body).byteLength;
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if (bytes > MAX_MESSAGE_LENGTH)
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throw new Error(msg('Voice command context is too large'));
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const optional = Boolean(
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message.realtimeInput?.audio || message.realtimeInput?.video,
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);
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if (optional) {
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this.pruneControls();
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if (
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this.goAway ||
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this.controlQueue.length ||
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this.socket.bufferedAmount + bytes > MAX_BUFFERED_BYTES
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) {
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if (message.realtimeInput.audio) this.droppedAudioChunks++;
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else this.droppedImages++;
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return false;
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}
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this.socket.send(body);
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onSent?.();
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return true;
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}
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this.pruneControls();
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const entry = {
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epoch: this.epoch,
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turn: this.turn,
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captureId,
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durable,
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message,
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body,
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bytes,
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onSent,
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deadline: this.now() + CONTROL_PRESSURE_TIMEOUT_MS,
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};
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if (!this.controlQueue.length && this.canSendControl(entry)) {
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this.writeControl(entry);
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return true;
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}
|
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if (
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bytes > MAX_CONTROL_BYTES ||
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this.controlBytes + bytes > MAX_CONTROL_BYTES ||
|
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this.controlQueue.length >= MAX_CONTROL_MESSAGES
|
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)
|
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throw new Error(
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msg(
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'Gemini reliable transport exceeded its queue limit. Start voice again.',
|
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),
|
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);
|
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this.controlQueue.push(entry);
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this.controlBytes += bytes;
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this.scheduleControls();
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return true;
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}
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|
|
controlCurrent(entry) {
|
|
if (!this.owns(entry.epoch)) return false;
|
|
if (entry.durable) return true;
|
|
const input = entry.message.realtimeInput;
|
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if (
|
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entry.message.toolResponse?.functionResponses?.some((call) =>
|
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this.cancelledCalls.has(call.id),
|
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)
|
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)
|
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return false;
|
|
if (input?.activityEnd)
|
|
return (
|
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(this.forwardedActivityOpen &&
|
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this.forwardedCaptureId === entry.captureId) ||
|
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(this.acceptsCapture({ captureId: entry.captureId }) &&
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this.controlQueue.some(
|
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(pending) =>
|
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pending.message.realtimeInput?.activityStart &&
|
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pending.captureId === entry.captureId &&
|
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this.controlCurrent(pending),
|
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))
|
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);
|
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if (entry.captureId !== null)
|
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return this.acceptsCapture({ captureId: entry.captureId });
|
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return entry.turn === this.turn;
|
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}
|
|
|
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pruneControls() {
|
|
this.controlQueue = this.controlQueue.filter((entry) =>
|
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this.controlCurrent(entry),
|
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);
|
|
this.controlBytes = this.controlQueue.reduce(
|
|
(total, entry) => total + entry.bytes,
|
|
0,
|
|
);
|
|
if (!this.controlQueue.length) {
|
|
if (this.controlTimer !== null) this.clearTimer(this.controlTimer);
|
|
this.controlTimer = null;
|
|
}
|
|
}
|
|
|
|
canSendControl(entry) {
|
|
return (
|
|
entry.bytes <= MAX_CONTROL_BYTES &&
|
|
(this.socket.bufferedAmount === 0 ||
|
|
this.socket.bufferedAmount + entry.bytes <= MAX_BUFFERED_BYTES)
|
|
);
|
|
}
|
|
|
|
writeControl(entry) {
|
|
this.socket.send(entry.body);
|
|
if (!this.controlCurrent(entry)) return;
|
|
const input = entry.message.realtimeInput;
|
|
// Only markers actually written to the socket own its physical activity.
|
|
if (input?.activityStart) {
|
|
this.forwardedActivityOpen = true;
|
|
this.forwardedCaptureId = entry.captureId;
|
|
this.beginSpeechIntent(entry.captureId);
|
|
if (!this.controlCurrent(entry)) return;
|
|
}
|
|
if (input?.activityEnd) {
|
|
this.forwardedActivityOpen = false;
|
|
this.forwardedCaptureId = null;
|
|
if (this.intentCaptureId === entry.captureId) this.bindSpeechIntent();
|
|
}
|
|
entry.onSent?.();
|
|
}
|
|
|
|
scheduleControls() {
|
|
if (this.controlTimer !== null || !this.controlQueue.length) return;
|
|
const epoch = this.epoch;
|
|
this.controlTimer = this.setTimer(
|
|
() => {
|
|
if (!this.owns(epoch)) return;
|
|
this.controlTimer = null;
|
|
try {
|
|
this.flushControls();
|
|
} catch (error) {
|
|
this.fail(error);
|
|
}
|
|
},
|
|
Math.min(
|
|
CONTROL_POLL_MS,
|
|
Math.max(0, this.controlQueue[0].deadline - this.now()),
|
|
),
|
|
);
|
|
this.controlTimer?.unref?.();
|
|
}
|
|
|
|
flushControls() {
|
|
this.pruneControls();
|
|
while (this.controlQueue.length) {
|
|
const entry = this.controlQueue[0];
|
|
if (this.now() >= entry.deadline)
|
|
throw new Error(
|
|
msg('Gemini reliable transport did not drain. Start voice again.'),
|
|
);
|
|
if (!this.canSendControl(entry)) break;
|
|
this.controlQueue.shift();
|
|
this.controlBytes -= entry.bytes;
|
|
if (this.controlCurrent(entry)) this.writeControl(entry);
|
|
}
|
|
this.scheduleControls();
|
|
if (!this.controlQueue.length) this.finishPlayback();
|
|
}
|
|
|
|
clearControls() {
|
|
if (this.controlTimer !== null) this.clearTimer(this.controlTimer);
|
|
this.controlTimer = null;
|
|
this.controlQueue = [];
|
|
this.controlBytes = 0;
|
|
}
|
|
|
|
async requestToken(signal, pushToTalk = false) {
|
|
signal.throwIfAborted();
|
|
let acquiredResponse;
|
|
const acquisition = Promise.resolve(
|
|
this.fetchImpl(this.tokenEndpoint, {
|
|
method: 'POST',
|
|
cache: 'no-store',
|
|
redirect: 'error',
|
|
signal,
|
|
headers: { 'Content-Type': 'application/json' },
|
|
body: pushToTalk ? '{"inputMode":"push-to-talk"}' : '{}',
|
|
}),
|
|
);
|
|
void acquisition.then(
|
|
(response) => {
|
|
acquiredResponse = response;
|
|
if (signal.aborted) void response.body?.cancel().catch(() => {});
|
|
},
|
|
() => {},
|
|
);
|
|
try {
|
|
const response = await waitForSignal(acquisition, signal);
|
|
signal.throwIfAborted();
|
|
const data = await readResponseJsonCapped(response, 256 * 1024, signal);
|
|
signal.throwIfAborted();
|
|
if (!response.ok)
|
|
throw new Error(
|
|
typeof data?.error === 'string'
|
|
? tokenErrorMessage(data.error)
|
|
: t('Gemini token request failed (HTTP {status})', {
|
|
status: response.status,
|
|
}),
|
|
);
|
|
if (
|
|
typeof data?.model !== 'string' ||
|
|
!/^gemini-[a-z0-9.-]+$/.test(data.model)
|
|
)
|
|
throw new Error(
|
|
msg('Gemini token response did not include a valid model'),
|
|
);
|
|
if (
|
|
!data.config ||
|
|
typeof data.config !== 'object' ||
|
|
Array.isArray(data.config)
|
|
)
|
|
throw new Error(
|
|
msg('Gemini token response did not include session settings'),
|
|
);
|
|
const manual =
|
|
data.config.realtimeInputConfig?.automaticActivityDetection?.disabled;
|
|
if (
|
|
pushToTalk ? manual !== true : manual !== undefined && manual !== false
|
|
)
|
|
throw new Error(
|
|
msg('Gemini session settings do not match the input mode'),
|
|
);
|
|
const url = geminiSocketUrl(data);
|
|
return { ...data, url };
|
|
} finally {
|
|
if (signal.aborted) void acquiredResponse?.body?.cancel().catch(() => {});
|
|
}
|
|
}
|
|
|
|
async start({ pushToTalk = false } = {}) {
|
|
if (this.disposed || this.isActive() || this.signal?.aborted) return;
|
|
const held = pushToTalk && this.input.pushToTalkKeyHeld;
|
|
const spaceHeld = this.input.spaceKeyHeld;
|
|
this.stop({ preserveStatus: true });
|
|
this.input.pushToTalkMode = pushToTalk;
|
|
this.input.pushToTalkKeyHeld = held;
|
|
this.input.spaceKeyHeld = spaceHeld;
|
|
this.abort = new AbortController();
|
|
const epoch = this.epoch;
|
|
const permissionSignal = AbortSignal.any([
|
|
this.abort.signal,
|
|
...(this.signal ? [this.signal] : []),
|
|
]);
|
|
let signal = permissionSignal;
|
|
this.lastError = null;
|
|
this.lastAudio = null;
|
|
this.completedTurns = 0;
|
|
let acquiredStream = null;
|
|
let releasedStream = null;
|
|
const releaseStream = (stream) => {
|
|
if (!stream || stream === releasedStream) return;
|
|
releasedStream = stream;
|
|
stream.getTracks().forEach((track) => track.stop());
|
|
};
|
|
try {
|
|
this.setStatus('connecting', msg('Requesting microphone'));
|
|
if (!this.owns(epoch)) return;
|
|
signal.throwIfAborted();
|
|
this.radio.pauseRadioForVoice();
|
|
if (!this.owns(epoch)) return;
|
|
// The worklet serializes start, PCM and flushed end notifications. A
|
|
// keydown must not send a new start ahead of the previous queued end.
|
|
let activityCaptureId = null;
|
|
const audio = this.createAudio({
|
|
pushToTalk,
|
|
onAudioStart: (metadata) => {
|
|
if (
|
|
!this.owns(epoch) ||
|
|
this.goAway ||
|
|
!this.acceptsCapture(metadata)
|
|
)
|
|
return;
|
|
if (!pushToTalk || activityCaptureId === metadata.captureId) return;
|
|
this.captureOwner.admitted = true;
|
|
if (
|
|
!this.interrupt('push-to-talk', {
|
|
keepPlayback: !this.pttPlaybackSuppressed,
|
|
})
|
|
)
|
|
return;
|
|
if (!this.owns(epoch) || !this.acceptsCapture(metadata)) return;
|
|
const activityGeneration = this.inputGeneration;
|
|
const activityCurrent = () =>
|
|
this.owns(epoch) &&
|
|
this.inputGeneration === activityGeneration &&
|
|
this.acceptsCapture(metadata);
|
|
this.beginPointerTurn(
|
|
'speech_start',
|
|
this.captureOwner.snapshot,
|
|
activityCurrent,
|
|
);
|
|
if (!activityCurrent()) return;
|
|
const context = this.pendingPointerContext;
|
|
this.captureOwner.context = context;
|
|
if (!this.sendPointerContext(context, metadata)) {
|
|
if (this.owns(epoch))
|
|
this.fail(
|
|
new Error(
|
|
msg('Gemini could not submit this input. Start voice again.'),
|
|
),
|
|
);
|
|
return;
|
|
}
|
|
if (!activityCurrent()) return;
|
|
const accepted = this.sendUserInput(
|
|
{ realtimeInput: { activityStart: {} } },
|
|
metadata,
|
|
);
|
|
if (!activityCurrent()) return;
|
|
// Quiet context and an empty hold have no response to retire later.
|
|
if (accepted) activityCaptureId = metadata.captureId;
|
|
else if (this.owns(epoch))
|
|
this.fail(
|
|
new Error(
|
|
msg('Gemini could not submit this input. Start voice again.'),
|
|
),
|
|
);
|
|
},
|
|
onAudio: (chunk, metadata) => {
|
|
if (!this.owns(epoch) || !this.acceptsCapture(metadata)) return;
|
|
if (!pushToTalk || activityCaptureId === metadata.captureId) {
|
|
const sent = this.sendUserInput(
|
|
{
|
|
realtimeInput: { audio: chunk },
|
|
},
|
|
metadata,
|
|
);
|
|
if (sent && pushToTalk) this.replyPending = true;
|
|
}
|
|
},
|
|
onAudioEnd: (metadata) => {
|
|
if (!this.owns(epoch) || !this.validCaptureMetadata(metadata)) return;
|
|
if (pushToTalk) {
|
|
if (this.captureOwner?.captureId === metadata.captureId)
|
|
this.captureOwner.settled = true;
|
|
if (activityCaptureId !== metadata.captureId) {
|
|
this.finishPlayback();
|
|
return;
|
|
}
|
|
this.sendUserInput(
|
|
{ realtimeInput: { activityEnd: {} } },
|
|
metadata,
|
|
);
|
|
if (this.acceptsCapture(metadata)) this.narration.userTurnEnded();
|
|
activityCaptureId = null;
|
|
} else if (this.acceptsCapture(metadata)) {
|
|
this.send({ realtimeInput: { audioStreamEnd: true } });
|
|
}
|
|
},
|
|
onAudioDiscard: (metadata) => {
|
|
if (
|
|
!this.owns(epoch) ||
|
|
!pushToTalk ||
|
|
!this.validCaptureMetadata(metadata) ||
|
|
this.captureOwner?.captureId !== metadata.captureId
|
|
)
|
|
return;
|
|
this.captureOwner.settled = true;
|
|
if (!this.acceptsCapture(metadata)) {
|
|
// New typed input owns completion; its retired capture cannot
|
|
// revoke that request or leave its presentation waiting.
|
|
this.finishPlayback();
|
|
return;
|
|
}
|
|
if (
|
|
activityCaptureId === metadata.captureId ||
|
|
this.forwardedCaptureId === metadata.captureId ||
|
|
this.deferredInput?.captureId === metadata.captureId
|
|
)
|
|
return;
|
|
// No provider turn was submitted or retired. Keep an older request's
|
|
// tool/completion ownership; the physical claim still revokes Radio.
|
|
this.radio.cancelRadioHandoff();
|
|
if (!this.audio?.pending) this.input.setVoiceSpeaker('idle');
|
|
this.finishPlayback();
|
|
},
|
|
onDrain: () => {
|
|
if (this.owns(epoch)) {
|
|
this.narration.quiet();
|
|
this.finishPlayback();
|
|
}
|
|
},
|
|
onError: (error) => {
|
|
if (this.owns(epoch)) this.fail(error);
|
|
},
|
|
});
|
|
if (!this.owns(epoch) || signal.aborted) {
|
|
void Promise.resolve(audio.close()).catch(() => {});
|
|
return;
|
|
}
|
|
this.audio = audio;
|
|
// Invoke resume in the initiating gesture, but do not mint the short-lived
|
|
// admission credential while an uncancellable permission prompt is open.
|
|
const initialized = Promise.resolve(audio.initialize(permissionSignal));
|
|
void initialized.catch(() => {});
|
|
if (!this.owns(epoch)) return;
|
|
signal.throwIfAborted();
|
|
const mediaRequest = Promise.resolve(
|
|
this.getUserMedia({
|
|
audio: {
|
|
echoCancellation: true,
|
|
noiseSuppression: true,
|
|
autoGainControl: true,
|
|
channelCount: 1,
|
|
},
|
|
}),
|
|
);
|
|
// Permission prompts cannot be cancelled. A later grant still belongs
|
|
// to this attempt and must release its own tracks after stop/timeout.
|
|
void mediaRequest.then(
|
|
(stream) => {
|
|
if (!this.owns(epoch) || signal.aborted) releaseStream(stream);
|
|
},
|
|
() => {},
|
|
);
|
|
acquiredStream = await waitForSignal(mediaRequest, signal);
|
|
if (!this.owns(epoch)) {
|
|
releaseStream(acquiredStream);
|
|
return;
|
|
}
|
|
signal.throwIfAborted();
|
|
this.stream = acquiredStream;
|
|
acquiredStream.getAudioTracks().forEach((track) => {
|
|
track.enabled = false;
|
|
});
|
|
signal = AbortSignal.any([
|
|
permissionSignal,
|
|
AbortSignal.timeout(this.startupTimeoutMs),
|
|
]);
|
|
this.setStatus('connecting', msg('Connecting to Gemini'));
|
|
if (!this.owns(epoch)) return;
|
|
signal.throwIfAborted();
|
|
const startup = Promise.all([
|
|
initialized,
|
|
this.requestToken(signal, pushToTalk),
|
|
]);
|
|
void startup.catch(() => {});
|
|
const [, credential] = await waitForSignal(startup, signal);
|
|
if (!this.owns(epoch)) return;
|
|
this.model = credential.model;
|
|
await this.connect(credential, epoch, signal);
|
|
if (!this.owns(epoch)) return;
|
|
signal.throwIfAborted();
|
|
const enabled =
|
|
!this.input.pushToTalkMode || this.input.pushToTalkKeyHeld;
|
|
this.input.setMicrophoneEnabled(enabled);
|
|
audio.connectMicrophone(
|
|
acquiredStream,
|
|
enabled,
|
|
this.captureOwner ? { captureId: this.captureOwner.captureId } : null,
|
|
);
|
|
this.input.startVoiceVisualizer(acquiredStream);
|
|
this.input.startAssistantVoiceVisualizer(audio.outputStream);
|
|
this.setStatus('listening', msg('Ask or command'));
|
|
} catch (error) {
|
|
if (acquiredStream && acquiredStream !== this.stream)
|
|
releaseStream(acquiredStream);
|
|
if (this.owns(epoch)) this.fail(error);
|
|
}
|
|
}
|
|
|
|
connect(credential, epoch, signal) {
|
|
return new Promise((resolve, reject) => {
|
|
signal.throwIfAborted();
|
|
if (!this.owns(epoch)) return reject(cancelled());
|
|
const socket = new this.WebSocketClass(credential.url);
|
|
socket.binaryType = 'arraybuffer';
|
|
this.socket = socket;
|
|
const channel = { readyState: 'connecting' };
|
|
this.channel = channel;
|
|
let connected = false;
|
|
const current = () => this.owns(epoch) && this.socket === socket;
|
|
const abort = () => {
|
|
signal.removeEventListener('abort', abort);
|
|
reject(signal.reason || cancelled());
|
|
};
|
|
signal.addEventListener('abort', abort, { once: true });
|
|
socket.onopen = () => {
|
|
if (!current()) return;
|
|
try {
|
|
this.send(
|
|
{
|
|
setup: {
|
|
...credential.config,
|
|
model: `models/${credential.model}`,
|
|
},
|
|
},
|
|
{ beforeSetup: true },
|
|
);
|
|
} catch (error) {
|
|
reject(error);
|
|
}
|
|
};
|
|
socket.onmessage = ({ data }) => {
|
|
if (!current()) return;
|
|
try {
|
|
const text =
|
|
typeof data === 'string' ? data : new TextDecoder().decode(data);
|
|
if (text.length > MAX_MESSAGE_LENGTH)
|
|
throw new Error(msg('Gemini returned an oversized message'));
|
|
const message = JSON.parse(text);
|
|
if (message.setupComplete) {
|
|
if (connected) return;
|
|
connected = true;
|
|
channel.readyState = 'open';
|
|
signal.removeEventListener('abort', abort);
|
|
resolve();
|
|
}
|
|
this.handleMessage(message, epoch);
|
|
} catch (error) {
|
|
if (!connected) reject(error);
|
|
else if (current()) this.fail(error);
|
|
}
|
|
};
|
|
socket.onerror = () => {
|
|
const error = new Error(
|
|
msg(
|
|
'Gemini Live connection failed. Check network access, then start voice again.',
|
|
),
|
|
);
|
|
if (!current()) return;
|
|
if (!connected) reject(error);
|
|
else this.fail(error);
|
|
};
|
|
socket.onclose = (event) => {
|
|
if (!current()) return;
|
|
const code =
|
|
Number.isInteger(event?.code) &&
|
|
event.code >= 1000 &&
|
|
event.code <= 4999
|
|
? event.code
|
|
: null;
|
|
this.lastClose = {
|
|
code,
|
|
category:
|
|
code === 1000
|
|
? 'normal'
|
|
: code === 1008
|
|
? 'policy'
|
|
: code === 1011
|
|
? 'server'
|
|
: 'connection',
|
|
};
|
|
const error = new Error(
|
|
connected
|
|
? msg(
|
|
'Gemini Live connection ended. Start voice again for a new conversation.',
|
|
)
|
|
: msg(
|
|
'Gemini Live could not start. Start voice again to request a fresh session.',
|
|
),
|
|
);
|
|
error.recovery = connected
|
|
? msg('Start voice again for a fresh token and a new conversation.')
|
|
: msg('Start voice again to request a fresh session credential.');
|
|
if (!connected) reject(error);
|
|
else this.fail(error);
|
|
};
|
|
});
|
|
}
|
|
|
|
fail(error, recovery = error?.recovery) {
|
|
const detail =
|
|
error?.name === 'NotAllowedError'
|
|
? msg(
|
|
'Microphone permission was denied. Allow microphone access and try again.',
|
|
)
|
|
: error?.name === 'TimeoutError'
|
|
? msg('Gemini connection timed out. Try again.')
|
|
: error?.message || msg('Gemini voice could not start');
|
|
this.lastError = detail;
|
|
this.stop({ preserveStatus: true });
|
|
this.setStatus('error', detail, recovery);
|
|
}
|
|
|
|
abortTools() {
|
|
const resources = this.turnAbort;
|
|
const tools = [...this.tools.values()];
|
|
this.turnAbort = new AbortController();
|
|
this.turn++;
|
|
this.typedIntent = null;
|
|
this.radioStrongerCommit = null;
|
|
this.pruneControls();
|
|
this.tools.clear();
|
|
this.radio?.clearTools();
|
|
this.pendingTools = 0;
|
|
this.toolQueue = Promise.resolve();
|
|
this.narration?.cancel();
|
|
resources.abort();
|
|
for (const entry of tools) entry.abort();
|
|
}
|
|
|
|
noteUserActivity() {
|
|
this.narration?.cancel();
|
|
this.modelSpoke = false;
|
|
this.userTurnPending = true;
|
|
this.radio.cancelRadioHandoff();
|
|
}
|
|
|
|
/** A physical hold silences playback; only admitted speech retires a turn. */
|
|
claimPttPlayback() {
|
|
if (
|
|
this.channel?.readyState !== 'open' ||
|
|
this.goAway ||
|
|
!this.radio.mayVoiceClaimSpeaker()
|
|
)
|
|
return false;
|
|
this.pttPlaybackSuppressed = true;
|
|
this.audio?.clearPlayback();
|
|
this.input.setVoiceSpeaker('user');
|
|
return true;
|
|
}
|
|
|
|
/** A claimed Space hold stops local playback before its audio reaches Live. */
|
|
bargeIn() {
|
|
if (
|
|
this.channel?.readyState !== 'open' ||
|
|
this.goAway ||
|
|
!this.radio.mayVoiceClaimSpeaker()
|
|
)
|
|
return false;
|
|
return this.interrupt('push-to-talk');
|
|
}
|
|
|
|
interrupt(
|
|
reason = 'user-speech',
|
|
{
|
|
keepPlayback = false,
|
|
preserveAdvisoryCaption = false,
|
|
serverInterrupted = false,
|
|
} = {},
|
|
) {
|
|
if (this.goAway && !serverInterrupted) return false;
|
|
const epoch = this.epoch;
|
|
const generation = ++this.inputGeneration;
|
|
const channel = this.channel;
|
|
const owned = () =>
|
|
this.owns(epoch) &&
|
|
this.inputGeneration === generation &&
|
|
this.channel === channel;
|
|
this.pttPlaybackSuppressed = false;
|
|
// Arm only for an outstanding reply: an idle hold/first text command has
|
|
// no old boundary to wait for. This also covers generation before the
|
|
// first output packet, because input submission marks replyPending.
|
|
const deferred = this.deferredInput;
|
|
const deferInput =
|
|
deferred || (this.retiredReplyPending && this.replyPending);
|
|
if (this.replyPending) {
|
|
if (!this.retiredReplyPending)
|
|
this.retiredAutomaticActivityOwner = this.automaticActivityOwner;
|
|
this.retiredReplyPending = true;
|
|
}
|
|
this.replyPending = false;
|
|
this.unrequestedReply = false;
|
|
if (['push-to-talk', 'user-text'].includes(reason)) {
|
|
this.automaticTurnOpen = false;
|
|
this.automaticActivityOwner = null;
|
|
}
|
|
this.clearDeferredInput();
|
|
this.abortTools();
|
|
if (!owned()) return false;
|
|
this.intentItemId = null;
|
|
this.intentResponseId = null;
|
|
this.intentCaptureId = null;
|
|
if (deferInput) {
|
|
// Only one successor may reach Live before the previous boundary. A
|
|
// newer local turn replaces unsent input and waits to interrupt that
|
|
// successor, rather than creating indistinguishable overlapping replies.
|
|
const owner = {
|
|
epoch: this.epoch,
|
|
turn: this.turn,
|
|
messages: [],
|
|
bytes: 0,
|
|
activityOpen: false,
|
|
kind: reason,
|
|
context: null,
|
|
deadline:
|
|
deferred?.deadline ||
|
|
this.retiredBoundaryWait?.deadline ||
|
|
this.now() + this.inputBoundaryTimeoutMs,
|
|
};
|
|
this.clearRetiredBoundaryWait();
|
|
this.deferredInput = owner;
|
|
owner.timer = this.setTimer(
|
|
() => {
|
|
if (this.deferredInput === owner && this.owns(owner.epoch))
|
|
this.fail(
|
|
new Error(
|
|
msg(
|
|
'Gemini did not finish the interrupted reply. Start voice again.',
|
|
),
|
|
),
|
|
);
|
|
},
|
|
Math.max(0, owner.deadline - this.now()),
|
|
);
|
|
owner.timer.unref?.();
|
|
} else this.boundRetiredReply();
|
|
this.noteUserActivity();
|
|
if (!owned()) return false;
|
|
if (!keepPlayback) this.audio?.clearPlayback();
|
|
if (!owned()) return false;
|
|
this.modelComplete = false;
|
|
this.pendingCompletionStatus = null;
|
|
this.postToolOutput = false;
|
|
this.stopAfterReply = false;
|
|
this.transcripts.assistant = '';
|
|
this.emit({
|
|
type: 'interruption',
|
|
reason,
|
|
...(preserveAdvisoryCaption ? { preserveAdvisoryCaption: true } : {}),
|
|
});
|
|
if (!owned()) return false;
|
|
this.input.setVoiceSpeaker(this.goAway ? 'idle' : 'user');
|
|
if (!owned()) return false;
|
|
this.setStatus(
|
|
'listening',
|
|
this.goAway
|
|
? msg('Gemini session expiring; finishing the current reply')
|
|
: msg('Ask or command'),
|
|
);
|
|
return owned();
|
|
}
|
|
|
|
discardRetiredReply(message, epoch) {
|
|
if (!this.owns(epoch) || !this.retiredReplyPending) return false;
|
|
const content = message.serverContent;
|
|
// Retired output proves the old reply is still running; only silence
|
|
// after it counts toward the first retirement's recovery bound.
|
|
if (
|
|
this.retiredBoundaryWait?.extendable &&
|
|
!content?.turnComplete &&
|
|
(content?.modelTurn ||
|
|
content?.outputTranscription ||
|
|
content?.generationComplete ||
|
|
message.toolCall)
|
|
) {
|
|
this.clearRetiredBoundaryWait();
|
|
this.boundRetiredReply();
|
|
}
|
|
const retiredIds = (message.toolCall?.functionCalls || [])
|
|
.map((call) => call?.id)
|
|
.filter(validCallId);
|
|
this.rememberCallIds(retiredIds);
|
|
for (const id of retiredIds) this.cancelledCalls.add(id);
|
|
// Gemini documents interrupted -> turnComplete. Discard all retired
|
|
// output, including content coalesced with either marker. A natural
|
|
// completion racing the local claim also closes the old reply safely.
|
|
if (content?.turnComplete) {
|
|
this.clearRetiredBoundaryWait();
|
|
this.retiredReplyPending = false;
|
|
if (
|
|
this.typedIntent?.retiredAutomaticPredecessor ===
|
|
this.retiredAutomaticActivityOwner
|
|
)
|
|
this.typedIntent.retiredAutomaticPredecessor = null;
|
|
// A true replyPending now belongs to a successor submitted while
|
|
// this older reply was retired. Its boundary cannot revoke that input.
|
|
if (this.automaticActivityOwner === this.retiredAutomaticActivityOwner) {
|
|
this.automaticTurnOpen = false;
|
|
this.automaticActivityOwner = null;
|
|
}
|
|
this.retiredAutomaticActivityOwner = null;
|
|
if (this.goAway) {
|
|
this.clearDeferredInput();
|
|
if (
|
|
this.goAway.supersededSuccessor ||
|
|
(!this.replyPending &&
|
|
!this.automaticTurnOpen &&
|
|
!this.pendingTools &&
|
|
!this.audio?.pending &&
|
|
!this.controlQueue.length)
|
|
)
|
|
this.finishGoAway();
|
|
} else this.flushDeferredInput();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
handleMessage(message, epoch = this.epoch) {
|
|
if (!this.owns(epoch)) return;
|
|
const initialGeneration = this.inputGeneration;
|
|
const initialTurn = this.turn;
|
|
const initialCurrent = () =>
|
|
this.owns(epoch) &&
|
|
this.inputGeneration === initialGeneration &&
|
|
this.turn === initialTurn;
|
|
if (this.goAway && this.now() >= this.goAway.deadline) {
|
|
this.finishGoAway();
|
|
return;
|
|
}
|
|
if (message.error) {
|
|
this.fail(
|
|
new Error(
|
|
msg(
|
|
'Gemini rejected the voice session. Start voice again to request a fresh session.',
|
|
),
|
|
),
|
|
msg(
|
|
'Start voice again for a fresh session credential. If it repeats, check Gemini model and API access.',
|
|
),
|
|
);
|
|
return;
|
|
}
|
|
if (message.goAway) {
|
|
this.beginGoAway(message.goAway.timeLeft, epoch);
|
|
if (!initialCurrent()) return;
|
|
}
|
|
let prunedCancelledControls = false;
|
|
for (const id of message.toolCallCancellation?.ids || []) {
|
|
const action = this.tools.get(id);
|
|
const results = [
|
|
this.radio.pendingRadioPlaybackResult,
|
|
this.radio.radioHandoffInFlightResult,
|
|
].filter((result) => {
|
|
const owner = result && this.radioPlaybackCalls.get(result);
|
|
return (
|
|
owner?.id === id && owner.epoch === epoch && owner.turn === this.turn
|
|
);
|
|
});
|
|
const queuedResponse = this.controlQueue.some((entry) =>
|
|
entry.message.toolResponse?.functionResponses?.some(
|
|
(call) => call.id === id,
|
|
),
|
|
);
|
|
// A queued response still owns transport work until it reaches the wire.
|
|
if (!action && !results.length && !queuedResponse) continue;
|
|
this.cancelledCalls.add(id);
|
|
action?.abort();
|
|
if (!initialCurrent()) return;
|
|
for (const result of results) this.radio.cancelPlaybackResult(result);
|
|
if (!initialCurrent()) return;
|
|
const queuedControls = this.controlQueue.length;
|
|
this.pruneControls();
|
|
prunedCancelledControls ||= this.controlQueue.length < queuedControls;
|
|
}
|
|
if (prunedCancelledControls) {
|
|
// Removing the last queued response can release an already complete turn.
|
|
this.finishPlayback();
|
|
// Completion observers may stop this session or accept a successor input.
|
|
if (!initialCurrent()) return;
|
|
}
|
|
const content = message.serverContent;
|
|
let receivedReplyPending = this.replyPending || this.retiredReplyPending;
|
|
const settleFencedBoundary = () => {
|
|
// Preserve this packet's old terminal without publishing its caption,
|
|
// audio or tools into the new input. A terminal already processed below
|
|
// must never be reused to close a successor retired by a final observer.
|
|
if (receivedReplyPending && content?.turnComplete)
|
|
this.discardRetiredReply(message, epoch);
|
|
};
|
|
// A server acknowledgment of a local interruption belongs to the retired
|
|
// reply; it must not revoke the successor's pointer, timing or turn token.
|
|
if (content?.interrupted) {
|
|
const newAutomaticActivity =
|
|
!this.input.pushToTalkMode &&
|
|
!this.goAway &&
|
|
message.voiceActivity?.type === 'ACTIVITY_START' &&
|
|
!this.userActivityOpen;
|
|
const predecessor = this.typedIntent?.automaticPredecessor;
|
|
if (
|
|
!this.retiredReplyPending &&
|
|
!newAutomaticActivity &&
|
|
predecessor?.epoch === epoch &&
|
|
this.currentTypedInput()
|
|
) {
|
|
// Automatic VAD may not have produced output before text superseded
|
|
// it. This specific local predecessor owns one interruption boundary;
|
|
// the acknowledgment is not another user input. Do not infer this
|
|
// from output silence alone, or wait for a boundary until it arrives.
|
|
this.retiredAutomaticActivityOwner = predecessor;
|
|
this.typedIntent.retiredAutomaticPredecessor = predecessor;
|
|
this.typedIntent.automaticPredecessor = null;
|
|
} else if (!this.retiredReplyPending) {
|
|
if (
|
|
!this.interrupt('user-speech', {
|
|
preserveAdvisoryCaption: true,
|
|
serverInterrupted: true,
|
|
})
|
|
) {
|
|
settleFencedBoundary();
|
|
return;
|
|
}
|
|
}
|
|
this.retiredReplyPending = true;
|
|
receivedReplyPending = true;
|
|
this.boundRetiredReply();
|
|
}
|
|
// Manual PTT owns its onset locally. Automatic speech takes one snapshot
|
|
// per activity, regardless of duplicate/late transcription notifications.
|
|
if (!this.input.pushToTalkMode && !this.goAway) {
|
|
if (
|
|
message.voiceActivity?.type === 'ACTIVITY_START' &&
|
|
!this.userActivityOpen
|
|
) {
|
|
this.userActivityOpen = true;
|
|
const typedPredecessor = this.typedIntent?.retiredAutomaticPredecessor;
|
|
if (
|
|
this.retiredReplyPending &&
|
|
typedPredecessor &&
|
|
typedPredecessor === this.retiredAutomaticActivityOwner &&
|
|
this.currentTypedInput()
|
|
) {
|
|
// This precise wait still belongs to the automatic predecessor, not
|
|
// the submitted text. New speech revokes that text without inventing
|
|
// a second retirement/deferred input or renewing the existing bound.
|
|
this.replyPending = false;
|
|
if (!this.interrupt()) return;
|
|
} else if (!this.retiredReplyPending && !this.interrupt()) return;
|
|
// Local activity ownership is only for expiry liveness, not tools.
|
|
// Assign after retiring observed output so its boundary cannot clear
|
|
// a newer detected activity that has not received a reply yet.
|
|
this.automaticActivityOwner = {
|
|
epoch,
|
|
sequence: ++this.automaticActivitySequence,
|
|
};
|
|
this.automaticTurnOpen = true;
|
|
const activityGeneration = this.inputGeneration;
|
|
const activityCurrent = () =>
|
|
this.owns(epoch) && this.inputGeneration === activityGeneration;
|
|
this.beginSpeechIntent(null);
|
|
if (!activityCurrent()) return;
|
|
this.beginPointerTurn('speech_start', undefined, activityCurrent);
|
|
if (!activityCurrent()) return;
|
|
const context = this.pendingPointerContext;
|
|
if (
|
|
context &&
|
|
this.send({
|
|
realtimeInput: { text: JSON.stringify(context.item) },
|
|
}) &&
|
|
activityCurrent()
|
|
)
|
|
this.consumePointerContext(context);
|
|
} else if (
|
|
message.voiceActivity?.type === 'ACTIVITY_END' &&
|
|
this.userActivityOpen
|
|
) {
|
|
this.userActivityOpen = false;
|
|
this.bindSpeechIntent();
|
|
this.narration.userTurnEnded();
|
|
}
|
|
}
|
|
// Native activity above may intentionally advance the local input. From
|
|
// here, observers must not let the rest of this packet reach a successor.
|
|
const messageGeneration = this.inputGeneration;
|
|
const messageTurn = this.turn;
|
|
const messageCurrent = () =>
|
|
this.owns(epoch) &&
|
|
this.inputGeneration === messageGeneration &&
|
|
this.turn === messageTurn;
|
|
// Native Live captions are unordered advisory segments. Never attach them
|
|
// to a command token or use them to grant/revoke a tool's lifetime.
|
|
if (content?.inputTranscription?.text) {
|
|
this.transcript('user', content.inputTranscription);
|
|
if (!messageCurrent()) {
|
|
settleFencedBoundary();
|
|
return;
|
|
}
|
|
}
|
|
if (this.discardRetiredReply(message, epoch)) return;
|
|
// Push-to-talk owns every input boundary locally: a call that arrives with
|
|
// no input, reply or tool result outstanding was not requested, and nor is
|
|
// anything else in the reply it starts. Open-mic turns start on Gemini's
|
|
// server-side activity detection, which reports no boundary to gate on.
|
|
const unrequested =
|
|
this.input.pushToTalkMode &&
|
|
!this.replyPending &&
|
|
!this.userTurnPending &&
|
|
!this.pendingTools;
|
|
let toolCalls = message.toolCall?.functionCalls || [];
|
|
if (toolCalls.length && (unrequested || this.unrequestedReply)) {
|
|
this.refuseUnrequestedTools(toolCalls);
|
|
toolCalls = [];
|
|
}
|
|
// In push-to-talk, a caption alone after its turn ended still belongs to
|
|
// that turn. It must not open a reply the next input would retire,
|
|
// discarding that input's own tool calls while it waits for a boundary
|
|
// that never comes. Open mic cannot tell it from a new reply's first
|
|
// caption, so there it still opens one.
|
|
const lateCaption =
|
|
this.input.pushToTalkMode &&
|
|
!this.replyPending &&
|
|
!this.userTurnPending &&
|
|
!this.automaticTurnOpen &&
|
|
!this.pendingTools &&
|
|
!content?.modelTurn &&
|
|
!content?.generationComplete &&
|
|
!toolCalls.length;
|
|
if (
|
|
content?.modelTurn ||
|
|
(content?.outputTranscription && !lateCaption) ||
|
|
content?.generationComplete ||
|
|
toolCalls.length
|
|
) {
|
|
// Output with nothing outstanding starts a reply nobody requested; a
|
|
// later call in it is refused like one that arrived first.
|
|
if (unrequested) this.unrequestedReply = true;
|
|
// Once successor output is observed, an unattributed later interruption
|
|
// cannot still claim the unobserved automatic predecessor's boundary.
|
|
if (this.typedIntent) {
|
|
this.typedIntent.automaticPredecessor = null;
|
|
this.typedIntent.retiredAutomaticPredecessor = null;
|
|
}
|
|
this.replyPending = true;
|
|
receivedReplyPending = true;
|
|
}
|
|
if (content?.outputTranscription?.text) {
|
|
this.userTurnPending = false;
|
|
this.postToolOutput = true;
|
|
this.transcript('assistant', content.outputTranscription);
|
|
if (!messageCurrent()) {
|
|
settleFencedBoundary();
|
|
return;
|
|
}
|
|
}
|
|
for (const part of (content?.interrupted
|
|
? []
|
|
: content?.modelTurn?.parts) || []) {
|
|
if (part.thought) continue;
|
|
if (part.inlineData?.data) {
|
|
this.userTurnPending = false;
|
|
this.modelComplete = false;
|
|
this.postToolOutput = true;
|
|
if (!this.pttPlaybackSuppressed) {
|
|
this.input.setVoiceSpeaker('ai');
|
|
if (!messageCurrent()) {
|
|
settleFencedBoundary();
|
|
return;
|
|
}
|
|
this.audio?.play(part.inlineData.data, part.inlineData.mimeType);
|
|
if (!messageCurrent()) {
|
|
settleFencedBoundary();
|
|
return;
|
|
}
|
|
this.modelSpoke = true;
|
|
this.narration.audible();
|
|
if (!messageCurrent()) {
|
|
settleFencedBoundary();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (toolCalls.length) this.enqueueTools(toolCalls, epoch);
|
|
if (content?.turnComplete) {
|
|
if (this.typedIntent) {
|
|
this.typedIntent.automaticPredecessor = null;
|
|
this.typedIntent.retiredAutomaticPredecessor = null;
|
|
}
|
|
this.pttPlaybackSuppressed = false;
|
|
// A native terminal boundary also completes a silent user turn. Output,
|
|
// pending tools and queued controls still gate presentation completion.
|
|
this.userTurnPending = false;
|
|
this.replyPending = false;
|
|
this.unrequestedReply = false;
|
|
this.automaticTurnOpen = false;
|
|
this.automaticActivityOwner = null;
|
|
this.retiredAutomaticActivityOwner = null;
|
|
this.modelComplete = true;
|
|
this.pendingCompletionStatus = content.interrupted
|
|
? 'interrupted'
|
|
: 'completed';
|
|
this.completedTurns++;
|
|
// Native input captions have no response identity. A model completion
|
|
// cannot finalize them or join speech from either side of an interruption.
|
|
if (this.transcripts.assistant) {
|
|
this.emit({
|
|
type: 'transcript',
|
|
role: 'assistant',
|
|
text: this.transcripts.assistant,
|
|
final: true,
|
|
responseId: this.intentResponseId,
|
|
});
|
|
if (!messageCurrent()) return;
|
|
this.transcripts.assistant = '';
|
|
}
|
|
this.finishPlayback();
|
|
}
|
|
}
|
|
|
|
transcript(role, value) {
|
|
if (role === 'assistant')
|
|
this.transcripts.assistant = (
|
|
this.transcripts.assistant + value.text
|
|
).slice(-16000);
|
|
this.emit({
|
|
type: 'transcript',
|
|
role,
|
|
text: value.text,
|
|
final: false,
|
|
responseId: role === 'user' ? null : this.intentResponseId,
|
|
...(role === 'user' ? { attribution: 'unverified', delta: true } : {}),
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Answer unrequested calls without running them: every declaration is
|
|
* BLOCKING, so Live waits for a result. The reply stays tracked, so the next
|
|
* input retires it and its late boundary cannot close the user's turn.
|
|
*/
|
|
refuseUnrequestedTools(calls) {
|
|
const refused = new Map();
|
|
for (const call of calls)
|
|
if (
|
|
validCallId(call?.id) &&
|
|
typeof call.name === 'string' &&
|
|
!this.seenCalls.has(call.id)
|
|
)
|
|
refused.set(call.id, call.name);
|
|
this.rememberCallIds([...refused.keys()]);
|
|
if (!refused.size) return;
|
|
this.unrequestedReply = true;
|
|
this.replyPending = true;
|
|
this.send({
|
|
toolResponse: {
|
|
functionResponses: [...refused].map(([id, name]) => ({
|
|
id,
|
|
name,
|
|
response: {
|
|
ok: false,
|
|
action: name,
|
|
changed: false,
|
|
error: 'No user request is active.',
|
|
responseGuidance:
|
|
'Do not call another tool or claim an action ran. Wait for the user.',
|
|
},
|
|
})),
|
|
},
|
|
});
|
|
}
|
|
|
|
rememberCallIds(ids) {
|
|
const freshIds = new Set(ids.filter((id) => !this.seenCalls.has(id)));
|
|
// Forgetting an old ID would let its replay acquire a new turn's authority.
|
|
// Reserve the entire batch before changing policy or queuing any action.
|
|
if (this.seenCalls.size + freshIds.size > MAX_SEEN_CALLS)
|
|
throw new Error(
|
|
msg(
|
|
'Gemini action history is full. Start voice again for a fresh session.',
|
|
),
|
|
);
|
|
for (const id of freshIds) this.seenCalls.add(id);
|
|
}
|
|
|
|
enqueueTools(calls, epoch) {
|
|
if (
|
|
calls.length > MAX_TOOL_CALLS ||
|
|
this.pendingTools + calls.length > MAX_TOOL_CALLS
|
|
)
|
|
throw new Error(msg('Gemini requested too many simultaneous actions'));
|
|
const turn = this.turn;
|
|
this.userTurnPending = false;
|
|
this.modelComplete = false;
|
|
// Admit each valid native call ID once per connection.
|
|
const batchIds = new Set();
|
|
const acceptedCalls = calls.filter((call) => {
|
|
if (
|
|
!validCallId(call?.id) ||
|
|
typeof call.name !== 'string' ||
|
|
this.seenCalls.has(call.id) ||
|
|
batchIds.has(call.id)
|
|
)
|
|
return false;
|
|
batchIds.add(call.id);
|
|
return true;
|
|
});
|
|
this.rememberCallIds(acceptedCalls.map((call) => call.id));
|
|
for (const call of acceptedCalls) {
|
|
this.pendingTools++;
|
|
const action = new AbortController();
|
|
action.call = { id: call.id, name: call.name };
|
|
action.sequence = ++this.toolSequence;
|
|
this.tools.set(call.id, action);
|
|
const priorTools = this.toolQueue;
|
|
const args =
|
|
call.args && typeof call.args === 'object' && !Array.isArray(call.args)
|
|
? call.args
|
|
: {};
|
|
// Stronger Radio controls must reach their shared reservation/result
|
|
// owner while an older selection is awaiting a service. Keep ordinary
|
|
// siblings ordered, and retain every in-flight call in the drain promise.
|
|
// executeTool still checks currentness before any
|
|
// reservation; only a successful stronger result revokes older work.
|
|
const { stronger } = classifyGeminiTool(call.name, args);
|
|
const execution = (stronger ? Promise.resolve() : priorTools)
|
|
.then(async () => {
|
|
if (!this.owns(epoch) || turn !== this.turn) return;
|
|
if (this.cancelledCalls.has(call.id)) {
|
|
if (this.tools.get(call.id) === action) this.tools.delete(call.id);
|
|
this.pendingTools--;
|
|
if (!this.pendingTools) {
|
|
this.setStatus('listening', msg('Ask or command'));
|
|
if (this.owns(epoch) && turn === this.turn) this.finishPlayback();
|
|
}
|
|
return;
|
|
}
|
|
await this.executeTool(call, epoch, turn, action);
|
|
})
|
|
.catch((error) => {
|
|
if (this.owns(epoch) && turn === this.turn) this.fail(error);
|
|
});
|
|
this.toolQueue = stronger
|
|
? Promise.all([priorTools, execution]).then(() => {})
|
|
: execution;
|
|
}
|
|
}
|
|
|
|
async executeTool(call, epoch, turn, action) {
|
|
const args =
|
|
call.args && typeof call.args === 'object' && !Array.isArray(call.args)
|
|
? call.args
|
|
: {};
|
|
const deadline = AbortSignal.timeout(45_000);
|
|
const expire = () => action.abort(deadline.reason);
|
|
deadline.addEventListener('abort', expire, { once: true });
|
|
const toolSignal = AbortSignal.any([action.signal, this.turnAbort.signal]);
|
|
const {
|
|
radioControl,
|
|
radioVisibility,
|
|
authorityDomain: authority,
|
|
stronger,
|
|
abortScope,
|
|
} = classifyGeminiTool(call.name, args);
|
|
let reservation = null;
|
|
let handoffEpoch = this.radio.radioHandoffEpoch;
|
|
const current = () =>
|
|
this.owns(epoch) && this.turn === turn && !toolSignal.aborted;
|
|
const actionCurrent = () =>
|
|
current() &&
|
|
!this.radioSuperseded(action, authority, epoch, turn) &&
|
|
(authority !== 'playback' ||
|
|
handoffEpoch === this.radio.radioHandoffEpoch);
|
|
let result;
|
|
try {
|
|
if (!actionCurrent()) throw cancelled();
|
|
if (stronger)
|
|
reservation = this.radio.reserveRadioToolHandoff({ abortScope });
|
|
handoffEpoch = this.radio.radioHandoffEpoch;
|
|
if (!actionCurrent()) throw cancelled();
|
|
if (authority)
|
|
this.radio.registerTool(action, {
|
|
responseId: String(turn),
|
|
authorityDomain: authority,
|
|
});
|
|
this.setStatus('executing', msg('Running command'));
|
|
// A common state observer may synchronously stop/replace the session.
|
|
if (!actionCurrent()) throw cancelled();
|
|
this.radio.pauseRadioForVoice();
|
|
if (!actionCurrent()) throw cancelled();
|
|
if (this.modelSpoke) this.narration.preamble();
|
|
this.narration.toolStarted(call.id, {
|
|
name: call.name,
|
|
label: narrationLabel(call.name, args),
|
|
narrate: !radioControl && !radioVisibility,
|
|
});
|
|
if (!actionCurrent()) throw cancelled();
|
|
const execution = Promise.resolve(
|
|
this.runAction(call.name, args, {
|
|
signal: toolSignal,
|
|
callId: call.id,
|
|
progress: (update) => {
|
|
if (actionCurrent()) this.narration.progress(call.id, update);
|
|
},
|
|
isCurrent: actionCurrent,
|
|
}),
|
|
);
|
|
// action-call observers can abort before waitForSignal receives the
|
|
// already-started operation; retain its rejection handler in that case.
|
|
void execution.catch(() => {});
|
|
result = await waitForSignal(execution, toolSignal);
|
|
if (!actionCurrent()) throw cancelled();
|
|
if (result?.ok && result.radioPlaybackRequested) {
|
|
const playbackResult = { ...result };
|
|
this.radioPlaybackCalls.set(playbackResult, {
|
|
id: call.id,
|
|
epoch,
|
|
turn,
|
|
});
|
|
this.radio.setPendingPlayback(playbackResult);
|
|
}
|
|
if (
|
|
result?.action === 'get_entity_context' &&
|
|
shouldSendViewportImage(result.scene?.basemap?.viewScale) &&
|
|
!hasStructuredViewIdentity(result) &&
|
|
this.now() - this.lastViewportAt >= 1000
|
|
) {
|
|
const capture = Promise.resolve(this.captureViewport());
|
|
void capture.catch(() => {});
|
|
const image = await waitForSignal(capture, toolSignal);
|
|
if (actionCurrent() && image?.startsWith('data:image/jpeg;base64,')) {
|
|
this.lastViewportAt = this.now();
|
|
this.send({
|
|
realtimeInput: {
|
|
video: {
|
|
mimeType: 'image/jpeg',
|
|
data: image.slice(image.indexOf(',') + 1),
|
|
},
|
|
},
|
|
});
|
|
}
|
|
}
|
|
} catch (error) {
|
|
result = {
|
|
ok: false,
|
|
tool: call.name,
|
|
...(radioVisibility ? { layerId: 'radio' } : {}),
|
|
error:
|
|
error?.name === 'AbortError'
|
|
? 'Action cancelled by a newer request'
|
|
: error?.message || 'GEV command failed',
|
|
};
|
|
} finally {
|
|
deadline.removeEventListener('abort', expire);
|
|
if (this.tools.get(call.id) === action) this.tools.delete(call.id);
|
|
this.radio.releaseTool(action);
|
|
if (this.owns(epoch) && turn === this.turn)
|
|
this.narration.toolFinished(call.id);
|
|
}
|
|
if (!this.owns(epoch) || turn !== this.turn) return;
|
|
this.pendingTools--;
|
|
// Successful stronger ownership commits before the result is serialized.
|
|
// A failed reservation stays held until after its failure reaches transport.
|
|
if (reservation && result?.ok) {
|
|
this.radio.settleRadioToolHandoffReservation(reservation, {
|
|
commit: true,
|
|
responseId: String(turn),
|
|
});
|
|
reservation = null;
|
|
this.noteRadioStrongerCommit(action, abortScope, turn);
|
|
}
|
|
if (!this.owns(epoch) || turn !== this.turn) return;
|
|
const playbackObsolete =
|
|
authority === 'playback' && handoffEpoch !== this.radio.radioHandoffEpoch;
|
|
if (radioControl || radioVisibility) {
|
|
const state = this.radioLayer?.getUIState?.() || {};
|
|
const lifecycle = readLayerLifecycleSummary(this.dataManager, 'radio', {
|
|
fallbackEnabled: state.enabled ?? result?.enabled,
|
|
});
|
|
result = {
|
|
...result,
|
|
...lifecycle,
|
|
audioState: state.audioState || result?.audioState || 'stopped',
|
|
...(result?.radioAction === 'pause' && lifecycle.enabled === false
|
|
? { changed: false }
|
|
: {}),
|
|
...(playbackObsolete && result?.ok && result.radioPlaybackRequested
|
|
? { radioPlaybackRequested: false, radioPlaybackSuppressed: true }
|
|
: {}),
|
|
};
|
|
}
|
|
if (
|
|
!this.cancelledCalls.has(call.id) &&
|
|
shouldStopVoiceAfterRadioTool(result) &&
|
|
!result.radioPlaybackRequested &&
|
|
!result.radioPlaybackSuppressed
|
|
)
|
|
this.stopAfterReply = true;
|
|
// Native call cancellation suppresses its output, without canceling siblings.
|
|
if (!this.cancelledCalls.has(call.id)) {
|
|
this.postToolOutput = false;
|
|
this.modelComplete = false;
|
|
this.replyPending = true;
|
|
const mapSnapshot = [...this.pendingMapEvents];
|
|
const mapEvents = mapSnapshot.map((text) => JSON.parse(text));
|
|
const response = {
|
|
...(result ?? { ok: false, error: 'Command returned no result' }),
|
|
responseGuidance: responseInstructionForToolResult(result),
|
|
};
|
|
this.send(
|
|
{
|
|
toolResponse: {
|
|
functionResponses: [
|
|
{
|
|
id: call.id,
|
|
name: call.name,
|
|
response: mapEvents.length
|
|
? { ...response, mapEvents }
|
|
: response,
|
|
},
|
|
],
|
|
},
|
|
},
|
|
{ onSent: () => this.consumeMapEvents(mapSnapshot) },
|
|
);
|
|
}
|
|
if (!this.owns(epoch) || turn !== this.turn) return;
|
|
if (reservation)
|
|
this.radio.settleRadioToolHandoffReservation(reservation, {
|
|
commit: false,
|
|
responseId: String(turn),
|
|
});
|
|
if (this.owns(epoch) && turn === this.turn && !this.pendingTools) {
|
|
this.setStatus('listening', msg('Ask or command'));
|
|
if (this.owns(epoch) && turn === this.turn) this.finishPlayback();
|
|
}
|
|
}
|
|
|
|
finishPlayback() {
|
|
if (this.goAway && this.now() >= this.goAway.deadline) {
|
|
this.finishGoAway();
|
|
return;
|
|
}
|
|
if (
|
|
!this.isActive() ||
|
|
!this.modelComplete ||
|
|
this.userTurnPending ||
|
|
this.pendingTools ||
|
|
(this.input.pushToTalkMode &&
|
|
this.captureOwner &&
|
|
!this.captureOwner.retired &&
|
|
!this.captureOwner.admitted &&
|
|
!this.captureOwner.settled) ||
|
|
this.audio?.pending ||
|
|
this.controlQueue.length
|
|
)
|
|
return;
|
|
const completionStatus = this.pendingCompletionStatus;
|
|
this.pendingCompletionStatus = null;
|
|
this.narration.cancel();
|
|
if (completionStatus) {
|
|
const responseId = this.intentResponseId;
|
|
const completionEpoch = this.epoch;
|
|
const completionTurn = this.turn;
|
|
this.emit({
|
|
type: 'completion',
|
|
status: completionStatus,
|
|
responseId,
|
|
spoken: Boolean(this.modelSpoke),
|
|
audioDrained: true,
|
|
});
|
|
// Observers may synchronously accept new input or replace the session.
|
|
// Old completion must not clear its metadata or overwrite its status.
|
|
if (this.epoch !== completionEpoch || this.turn !== completionTurn)
|
|
return;
|
|
// Caption completion does not create an input or tool authority boundary.
|
|
this.clearSettledSpeechIntent();
|
|
}
|
|
// A completion observer may replace this provider immediately. Do not let
|
|
// the retired session update UI or start delayed Radio work afterward.
|
|
if (!this.isActive()) return;
|
|
this.input.setVoiceSpeaker('idle');
|
|
this.setStatus('listening', msg('Ask or command'));
|
|
if (this.stopAfterReply && this.postToolOutput) {
|
|
this.stop({ preserveRadioPlayback: true });
|
|
return;
|
|
}
|
|
if (this.goAway) {
|
|
this.finishGoAway();
|
|
return;
|
|
}
|
|
if (this.postToolOutput && this.radio.pendingRadioPlaybackResult)
|
|
void this.radio.startPendingRadioHandoff();
|
|
}
|
|
|
|
sendTextCommand(text) {
|
|
const clean = String(text || '').trim();
|
|
if (!clean || this.goAway) return false;
|
|
if (clean.length > 16000)
|
|
throw new Error(msg('Voice text command is too long'));
|
|
if (this.channel?.readyState !== 'open')
|
|
throw new Error(msg('Gemini voice is not connected'));
|
|
if (this.input.pushToTalkMode && this.captureOwner)
|
|
this.captureOwner.retired = true;
|
|
const automaticPredecessor =
|
|
this.automaticTurnOpen &&
|
|
!this.replyPending &&
|
|
!this.retiredReplyPending &&
|
|
!this.deferredInput
|
|
? this.automaticActivityOwner
|
|
: null;
|
|
if (!this.interrupt('user-text')) return false;
|
|
const epoch = this.epoch;
|
|
const turn = this.turn;
|
|
const generation = this.inputGeneration;
|
|
const owned = () =>
|
|
this.owns(epoch) &&
|
|
this.turn === turn &&
|
|
this.inputGeneration === generation;
|
|
// Typed intent supersedes the held speech even if its worklet end is late.
|
|
// Close the forwarded manual activity before submitting the new text.
|
|
if (this.input.pushToTalkMode && this.forwardedActivityOpen)
|
|
this.send(
|
|
{ realtimeInput: { activityEnd: {} } },
|
|
{ captureId: this.forwardedCaptureId },
|
|
);
|
|
if (!owned()) return false;
|
|
const typedIntent = {
|
|
epoch: this.epoch,
|
|
turn: this.turn,
|
|
text: clean,
|
|
responseId: `gemini-response-${this.epoch}-${++this.intentSequence}`,
|
|
automaticPredecessor,
|
|
retiredAutomaticPredecessor: null,
|
|
};
|
|
// Keep local presentation ownership while reliable transport drains.
|
|
this.typedIntent = typedIntent;
|
|
this.beginPointerTurn('text', undefined, owned);
|
|
if (!owned()) return false;
|
|
const context = this.pendingPointerContext;
|
|
const mapSnapshot = [...this.pendingMapEvents];
|
|
const parts = context ? [{ text: JSON.stringify(context.item) }] : [];
|
|
if (this.pendingMapEvents.length)
|
|
parts.push({
|
|
text: JSON.stringify({
|
|
type: 'map_events',
|
|
events: mapSnapshot.map((value) => JSON.parse(value)),
|
|
}),
|
|
});
|
|
parts.push({ text: clean });
|
|
const sent = this.sendUserInput(
|
|
{
|
|
clientContent: { turns: [{ role: 'user', parts }], turnComplete: true },
|
|
},
|
|
undefined,
|
|
{
|
|
onSent: () => {
|
|
if (!owned() || this.typedIntent !== typedIntent) return;
|
|
this.replyPending = true;
|
|
this.bindTextIntent(typedIntent);
|
|
if (!owned() || this.typedIntent !== typedIntent) return;
|
|
this.consumePointerContext(context);
|
|
this.consumeMapEvents(mapSnapshot);
|
|
},
|
|
},
|
|
);
|
|
if (sent && owned()) {
|
|
this.narration.userTurnEnded();
|
|
}
|
|
return sent && owned();
|
|
}
|
|
|
|
consumeMapEvents(snapshot) {
|
|
// Queue acceptance is not delivery. A cancelled envelope retains passive
|
|
// context for the next genuine turn, and new events cannot be erased.
|
|
if (snapshot.every((text, index) => this.pendingMapEvents[index] === text))
|
|
this.pendingMapEvents.splice(0, snapshot.length);
|
|
}
|
|
|
|
validCaptureMetadata(metadata) {
|
|
return Number.isSafeInteger(metadata?.captureId) && metadata.captureId > 0;
|
|
}
|
|
|
|
acceptsCapture(metadata) {
|
|
return (
|
|
this.validCaptureMetadata(metadata) &&
|
|
metadata.captureId === this.captureOwner?.captureId &&
|
|
!this.captureOwner.retired
|
|
);
|
|
}
|
|
|
|
sendUserInput(message, metadata, { onSent = null } = {}) {
|
|
const owner = this.deferredInput;
|
|
const input = message.realtimeInput;
|
|
const captureContext = message.clientContent?.turnComplete === false;
|
|
// A superseded start cannot read the current pointer or acquire its queue.
|
|
// Only an end for the actually forwarded old activity may close that wire.
|
|
if (
|
|
captureContext ||
|
|
input?.activityStart ||
|
|
input?.activityEnd ||
|
|
input?.audio
|
|
) {
|
|
if (!this.validCaptureMetadata(metadata)) return false;
|
|
if (!this.acceptsCapture(metadata)) {
|
|
return input?.activityEnd &&
|
|
this.forwardedActivityOpen &&
|
|
this.forwardedCaptureId === metadata.captureId
|
|
? this.send(message, { captureId: metadata.captureId, onSent })
|
|
: false;
|
|
}
|
|
}
|
|
if (
|
|
input?.activityEnd &&
|
|
!this.forwardedActivityOpen &&
|
|
!this.controlQueue.some(
|
|
(entry) =>
|
|
entry.captureId === metadata?.captureId &&
|
|
entry.message.realtimeInput?.activityStart,
|
|
) &&
|
|
!owner?.activityOpen
|
|
)
|
|
return true;
|
|
if (!owner)
|
|
return this.send(message, {
|
|
captureId: metadata?.captureId ?? null,
|
|
onSent,
|
|
});
|
|
if (!this.owns(owner.epoch) || owner.turn !== this.turn) return false;
|
|
// Worklet callbacks keep the previous end ahead of the new start. After
|
|
// replacing unsent input, that old end/PCM has no new gesture to belong to.
|
|
if (input?.activityEnd && !owner.activityOpen)
|
|
return this.forwardedActivityOpen
|
|
? this.send(message, { captureId: this.forwardedCaptureId, onSent })
|
|
: true;
|
|
if (
|
|
input?.audio &&
|
|
(!owner.activityOpen || owner.kind !== 'push-to-talk')
|
|
) {
|
|
// These frames cannot be replayed under the deferred explicit owner.
|
|
// Preserve that discard policy while making the loss observable.
|
|
this.droppedAudioChunks++;
|
|
this.deferredAudioDrops[
|
|
owner.kind !== 'push-to-talk' ? 'nonPttOwner' : 'closedActivity'
|
|
]++;
|
|
return true;
|
|
}
|
|
const bytes = new TextEncoder().encode(JSON.stringify(message)).byteLength;
|
|
if (
|
|
owner.bytes + bytes > MAX_BUFFERED_BYTES ||
|
|
this.now() >= owner.deadline
|
|
) {
|
|
this.fail(
|
|
new Error(
|
|
msg(
|
|
'Gemini interrupted input exceeded its buffer or wait limit. Start voice again.',
|
|
),
|
|
),
|
|
);
|
|
return false;
|
|
}
|
|
if (input?.activityStart) {
|
|
owner.activityOpen = true;
|
|
owner.captureId = metadata?.captureId;
|
|
}
|
|
if (input?.activityEnd) owner.activityOpen = false;
|
|
owner.messages.push(message);
|
|
if (onSent) {
|
|
owner.onSent ||= new Map();
|
|
owner.onSent.set(message, onSent);
|
|
}
|
|
owner.bytes += bytes;
|
|
return true;
|
|
}
|
|
|
|
clearDeferredInput() {
|
|
if (this.deferredInput) this.clearTimer(this.deferredInput.timer);
|
|
this.deferredInput = null;
|
|
}
|
|
|
|
clearRetiredBoundaryWait() {
|
|
if (this.retiredBoundaryWait)
|
|
this.clearTimer(this.retiredBoundaryWait.timer);
|
|
this.retiredBoundaryWait = null;
|
|
}
|
|
|
|
waitForRetiredBoundary(owner) {
|
|
this.clearRetiredBoundaryWait();
|
|
const wait = { epoch: owner.epoch, deadline: owner.deadline };
|
|
this.retiredBoundaryWait = wait;
|
|
wait.timer = this.setTimer(
|
|
() => {
|
|
if (
|
|
this.retiredBoundaryWait === wait &&
|
|
this.owns(wait.epoch) &&
|
|
this.retiredReplyPending
|
|
)
|
|
this.fail(
|
|
new Error(
|
|
msg(
|
|
'Gemini did not finish the interrupted reply. Start voice again.',
|
|
),
|
|
),
|
|
);
|
|
},
|
|
Math.max(0, wait.deadline - this.now()),
|
|
);
|
|
wait.timer.unref?.();
|
|
}
|
|
|
|
// A first retirement has no deferred owner, yet everything Live sends is
|
|
// discarded until the old boundary. Never leave that wait unbounded.
|
|
boundRetiredReply() {
|
|
if (
|
|
!this.retiredReplyPending ||
|
|
this.deferredInput ||
|
|
this.retiredBoundaryWait
|
|
)
|
|
return;
|
|
this.waitForRetiredBoundary({
|
|
epoch: this.epoch,
|
|
deadline: this.now() + this.inputBoundaryTimeoutMs,
|
|
});
|
|
this.retiredBoundaryWait.extendable = true;
|
|
}
|
|
|
|
flushDeferredInput() {
|
|
const owner = this.deferredInput;
|
|
if (!owner) return;
|
|
this.clearDeferredInput();
|
|
const generation = this.inputGeneration;
|
|
const current = () =>
|
|
this.owns(owner.epoch) &&
|
|
owner.turn === this.turn &&
|
|
generation === this.inputGeneration;
|
|
if (!current()) return;
|
|
if (this.now() >= owner.deadline) {
|
|
this.fail(
|
|
new Error(
|
|
msg(
|
|
'Gemini did not finish the interrupted reply. Start voice again.',
|
|
),
|
|
),
|
|
);
|
|
return;
|
|
}
|
|
// The already submitted successor is now the one being retired. Send the
|
|
// newest start/text immediately to trigger its own provider boundary.
|
|
this.retiredReplyPending = true;
|
|
// The forwarded predecessor here is explicit PTT/text, not a later VAD
|
|
// activity that may have arrived while its boundary was pending.
|
|
this.retiredAutomaticActivityOwner = null;
|
|
// Flushing (even an empty capture queue) must not remove the absolute
|
|
// recovery bound while the forwarded predecessor still owns output.
|
|
this.waitForRetiredBoundary(owner);
|
|
this.replyPending = false;
|
|
for (const message of owner.messages) {
|
|
if (!current()) return;
|
|
const onSent = owner.onSent?.get(message);
|
|
this.send(message, {
|
|
captureId: owner.captureId ?? null,
|
|
onSent: () => {
|
|
if (!current()) return;
|
|
onSent?.();
|
|
if (!current()) return;
|
|
if (
|
|
(message.clientContent &&
|
|
message.clientContent.turnComplete !== false) ||
|
|
message.realtimeInput?.audio ||
|
|
message.realtimeInput?.text
|
|
)
|
|
this.replyPending = true;
|
|
},
|
|
});
|
|
if (!current()) return;
|
|
}
|
|
if (current() && owner.context && !this.controlQueue.length)
|
|
this.consumePointerContext(owner.context);
|
|
}
|
|
|
|
/** Use the common pointer owner; held speech context precedes audio quietly. */
|
|
beginPointerTurn(at, capturedSnapshot = undefined, isCurrent = () => true) {
|
|
if (!this.pointer || !isCurrent()) return null;
|
|
// The delayed manual speech notification still refers to the released hold.
|
|
if (
|
|
capturedSnapshot === undefined &&
|
|
at === 'speech_start' &&
|
|
this.input.pushToTalkMode &&
|
|
!this.pointer.isHeld?.()
|
|
)
|
|
return this.pointer.activeSnapshot?.() || null;
|
|
const gesture =
|
|
at === 'keydown' || (at === 'speech_start' && this.input.pushToTalkMode);
|
|
let snapshot = null;
|
|
try {
|
|
snapshot = this.pointer.beginTurn(
|
|
at,
|
|
capturedSnapshot !== undefined
|
|
? { capturedSnapshot }
|
|
: gesture
|
|
? {}
|
|
: { recentMs: POINTER_OPEN_MIC_RECENT_MS },
|
|
);
|
|
} catch {
|
|
snapshot = null;
|
|
}
|
|
if (!isCurrent()) return null;
|
|
const event = pointerTurnEvent(snapshot, gesture);
|
|
this.pointerAnnounced = event.announced;
|
|
this.emit({ type: 'pointer', pointer: event.pointer });
|
|
if (!isCurrent()) return null;
|
|
this.pendingPointerContext = pointerTurnContext(snapshot, {
|
|
at,
|
|
gesture,
|
|
sentKey: this.pointerSentKey,
|
|
});
|
|
return snapshot;
|
|
}
|
|
|
|
/** Reveal an implicit referent only after the shared action runner uses it. */
|
|
announcePointer() {
|
|
const snapshot = this.pointer?.activeSnapshot?.() || null;
|
|
const pointer = pointerAnnouncement(snapshot, this.pointerAnnounced);
|
|
if (!pointer) return false;
|
|
this.pointerAnnounced = snapshot;
|
|
this.emit({ type: 'pointer', pointer });
|
|
return true;
|
|
}
|
|
|
|
/** Pointing accompanies speech without asking Live to answer the context. */
|
|
sendPointerContext(context, metadata) {
|
|
if (!context) return true;
|
|
const message = {
|
|
clientContent: {
|
|
turns: [
|
|
{ role: 'user', parts: [{ text: JSON.stringify(context.item) }] },
|
|
],
|
|
turnComplete: false,
|
|
},
|
|
};
|
|
// Context has the same physical owner and queue as its PTT start/PCM/end.
|
|
const deferred = Boolean(this.deferredInput);
|
|
const accepted = this.sendUserInput(message, metadata, {
|
|
onSent: () => this.consumePointerContext(context),
|
|
});
|
|
if (accepted && deferred) this.consumePointerContext(context);
|
|
return accepted;
|
|
}
|
|
|
|
consumePointerContext(context) {
|
|
if (!context) return;
|
|
if (this.deferredInput) {
|
|
this.deferredInput.context = context;
|
|
if (this.pendingPointerContext === context)
|
|
this.pendingPointerContext = null;
|
|
return;
|
|
}
|
|
this.pointerSentKey = context.key;
|
|
if (this.pendingPointerContext === context)
|
|
this.pendingPointerContext = null;
|
|
}
|
|
|
|
// Any clientContent message can interrupt Live generation, including one
|
|
// with turnComplete:false. Passive map results wait for an explicit turn
|
|
// or a tool response; they must never cut off spoken output or start speech.
|
|
notifyMapEvent(event) {
|
|
if (this.goAway || this.channel?.readyState !== 'open') return false;
|
|
let text;
|
|
try {
|
|
text = JSON.stringify(event);
|
|
} catch {
|
|
return false;
|
|
}
|
|
if (!text || text.length > MAX_MAP_CONTEXT_LENGTH) return false;
|
|
this.pendingMapEvents.push(text);
|
|
while (
|
|
this.pendingMapEvents.length > MAX_MAP_EVENTS ||
|
|
this.pendingMapEvents.reduce((sum, value) => sum + value.length, 0) >
|
|
MAX_MAP_CONTEXT_LENGTH
|
|
)
|
|
this.pendingMapEvents.shift();
|
|
return true;
|
|
}
|
|
|
|
beginSpeechIntent(captureId) {
|
|
if (this.retiredReplyPending && this.currentTypedInput()) return;
|
|
// Local onset labels serve timing/UI only. They do not assert native
|
|
// transcript ownership or mint a completed-speech authorization token.
|
|
this.clearSettledSpeechIntent();
|
|
// interrupt() revokes old input when a new local turn actually starts.
|
|
// Onsets racing a retired reply must not erase its typed successor.
|
|
this.intentItemId = `gemini-input-${this.epoch}-${++this.intentSequence}`;
|
|
this.intentResponseId = null;
|
|
this.intentCaptureId = captureId;
|
|
// A physical speech onset clears display-only recent captions, including
|
|
// when retirement already fenced the reply and no second interrupt runs.
|
|
this.emit({ type: 'transcript', role: 'user', text: '', final: false });
|
|
}
|
|
|
|
bindSpeechIntent() {
|
|
if (!this.intentItemId || this.intentResponseId) return;
|
|
this.intentResponseId = `gemini-response-${this.epoch}-${this.intentSequence}`;
|
|
}
|
|
|
|
currentTypedInput(turn = this.turn) {
|
|
const input = this.typedIntent;
|
|
return input?.epoch === this.epoch && input.turn === turn ? input : null;
|
|
}
|
|
|
|
// Stronger Radio controls skip the ordered queue. An older Radio call still
|
|
// waiting behind a sibling must not start after a successful stronger
|
|
// result has revoked it; later calls in the same turn remain the model's.
|
|
noteRadioStrongerCommit(action, abortScope, turn) {
|
|
let commit = this.radioStrongerCommit;
|
|
if (commit?.epoch !== this.epoch || commit.turn !== turn)
|
|
commit = this.radioStrongerCommit = {
|
|
epoch: this.epoch,
|
|
turn,
|
|
all: 0,
|
|
playback: 0,
|
|
};
|
|
const scope = abortScope === 'all' ? 'all' : 'playback';
|
|
commit[scope] = Math.max(commit[scope], action.sequence);
|
|
}
|
|
|
|
radioSuperseded(action, authority, epoch, turn) {
|
|
const commit = this.radioStrongerCommit;
|
|
// Read-only status queries stay current, as for the shared sibling abort.
|
|
if (
|
|
!authority ||
|
|
authority === 'query' ||
|
|
commit?.epoch !== epoch ||
|
|
commit.turn !== turn
|
|
)
|
|
return false;
|
|
return (
|
|
action.sequence < commit.all ||
|
|
(authority === 'playback' && action.sequence < commit.playback)
|
|
);
|
|
}
|
|
|
|
bindTextIntent(intent) {
|
|
if (
|
|
intent !== this.typedIntent ||
|
|
intent.epoch !== this.epoch ||
|
|
intent.turn !== this.turn
|
|
)
|
|
return;
|
|
this.clearSettledSpeechIntent();
|
|
this.intentResponseId = intent.responseId;
|
|
this.emit({
|
|
type: 'transcript',
|
|
role: 'user',
|
|
text: intent.text,
|
|
final: true,
|
|
});
|
|
}
|
|
|
|
clearSettledSpeechIntent() {
|
|
this.intentResponseId = null;
|
|
this.intentItemId = null;
|
|
this.intentCaptureId = null;
|
|
}
|
|
|
|
beginGoAway(timeLeft, epoch) {
|
|
const duration =
|
|
typeof timeLeft === 'string' &&
|
|
/^(?:\d{1,6})(?:\.\d{1,9})?s$/.test(timeLeft)
|
|
? Number(timeLeft.slice(0, -1)) * 1000
|
|
: 0;
|
|
const milliseconds = Math.min(
|
|
MAX_GO_AWAY_MS,
|
|
Number.isFinite(duration) ? duration : 0,
|
|
);
|
|
const deadline = this.now() + milliseconds;
|
|
if (this.goAway && this.goAway.deadline <= deadline) return;
|
|
const supersededSuccessor =
|
|
Boolean(this.deferredInput) || Boolean(this.goAway?.supersededSuccessor);
|
|
if (this.goAway) this.clearTimer(this.goAway.timer);
|
|
const owner = {
|
|
epoch,
|
|
turn: this.turn,
|
|
deadline,
|
|
timer: null,
|
|
// Dropping the newest unsent input must not make its superseded,
|
|
// already forwarded predecessor current at the retired boundary.
|
|
supersededSuccessor,
|
|
};
|
|
this.goAway = owner;
|
|
this.clearDeferredInput();
|
|
owner.timer = this.setTimer(() => {
|
|
if (this.goAway === owner && this.owns(epoch)) this.finishGoAway();
|
|
}, milliseconds);
|
|
owner.timer?.unref?.();
|
|
this.input.setMicrophoneEnabled(false);
|
|
this.radio.cancelRadioHandoff();
|
|
this.setStatus(
|
|
this.status,
|
|
msg('Gemini session expiring; finishing the current reply'),
|
|
);
|
|
if (
|
|
milliseconds === 0 ||
|
|
(!this.replyPending &&
|
|
!this.automaticTurnOpen &&
|
|
!this.pendingTools &&
|
|
!this.audio?.pending &&
|
|
!this.controlQueue.length)
|
|
)
|
|
this.finishGoAway();
|
|
else this.finishPlayback();
|
|
}
|
|
|
|
finishGoAway() {
|
|
if (!this.goAway) return;
|
|
this.fail(
|
|
new Error(
|
|
msg(
|
|
'Gemini Live connection is expiring. Start voice again for a new conversation.',
|
|
),
|
|
),
|
|
msg('Start voice again for a fresh token and a new conversation.'),
|
|
);
|
|
}
|
|
|
|
getDiagnostics() {
|
|
return {
|
|
provider: 'gemini',
|
|
status: this.status,
|
|
model: this.model,
|
|
connected: this.channel?.readyState === 'open',
|
|
microphoneActive: Boolean(
|
|
this.stream
|
|
?.getAudioTracks()
|
|
.some((track) => track.enabled && track.readyState !== 'ended'),
|
|
),
|
|
pendingTools: this.pendingTools,
|
|
narration: this.narration.state(),
|
|
completedTurns: this.completedTurns,
|
|
audio: this.audio?.diagnostics() || this.lastAudio,
|
|
error: this.lastError,
|
|
close: this.lastClose,
|
|
droppedAudioChunks: this.droppedAudioChunks,
|
|
deferredAudioDrops: { ...this.deferredAudioDrops },
|
|
droppedImages: this.droppedImages,
|
|
queuedControls: this.controlQueue.length,
|
|
expiring: Boolean(this.goAway),
|
|
};
|
|
}
|
|
|
|
stop({
|
|
removeUi = false,
|
|
preserveStatus = false,
|
|
preserveRadioPlayback = false,
|
|
} = {}) {
|
|
if (this.disposed) return;
|
|
this.epoch++;
|
|
this.inputGeneration++;
|
|
this.clearSettledSpeechIntent();
|
|
this.clearControls();
|
|
if (this.goAway) this.clearTimer(this.goAway.timer);
|
|
this.goAway = null;
|
|
this.abort?.abort();
|
|
this.abort = null;
|
|
this.abortTools();
|
|
this.earcon.dispose();
|
|
this.radio.invalidateHandoff();
|
|
this.radio.stopHandoff({ preserveRadioPlayback });
|
|
this.radio.clearPendingPlayback();
|
|
if (this.channel) this.channel.readyState = 'closed';
|
|
this.channel = null;
|
|
const socket = this.socket;
|
|
this.socket = null;
|
|
if (socket) {
|
|
socket.onopen = socket.onmessage = socket.onerror = socket.onclose = null;
|
|
socket.close();
|
|
}
|
|
if (this.audio) {
|
|
const lastAudio = {
|
|
...this.audio.diagnostics(),
|
|
queuedSeconds: 0,
|
|
resourcesReleased: true,
|
|
contextState: 'closing',
|
|
};
|
|
this.lastAudio = lastAudio;
|
|
void Promise.resolve(this.audio.close()).then(
|
|
(closed) => {
|
|
lastAudio.contextState = closed === false ? 'close-failed' : 'closed';
|
|
},
|
|
() => {
|
|
lastAudio.contextState = 'close-failed';
|
|
},
|
|
);
|
|
}
|
|
this.audio = null;
|
|
this.stream?.getTracks().forEach((track) => track.stop());
|
|
this.stream = null;
|
|
this.input.cancelPushToTalkHold();
|
|
this.input.stopVoiceVisualizer();
|
|
this.pointer?.clear({ keepHold: this.input.pushToTalkKeyHeld });
|
|
if (!this.input.pushToTalkKeyHeld) this.heldPointerSnapshot = undefined;
|
|
this.input.resetSession();
|
|
this.radio.setRadioVoiceDucking(false);
|
|
this.modelComplete = false;
|
|
this.pendingCompletionStatus = null;
|
|
this.postToolOutput = false;
|
|
this.modelSpoke = false;
|
|
this.stopAfterReply = false;
|
|
this.seenCalls.clear();
|
|
this.cancelledCalls.clear();
|
|
this.pendingMapEvents = [];
|
|
this.userTurnPending = false;
|
|
this.replyPending = false;
|
|
this.unrequestedReply = false;
|
|
this.automaticTurnOpen = false;
|
|
this.automaticActivityOwner = null;
|
|
this.retiredAutomaticActivityOwner = null;
|
|
this.automaticActivitySequence = 0;
|
|
this.retiredReplyPending = false;
|
|
this.clearDeferredInput();
|
|
this.clearRetiredBoundaryWait();
|
|
this.forwardedActivityOpen = false;
|
|
this.forwardedCaptureId = null;
|
|
this.captureEnabled = false;
|
|
this.pttPlaybackSuppressed = false;
|
|
this.microphoneRequested = false;
|
|
this.captureOwner = null;
|
|
this.userActivityOpen = false;
|
|
this.pointerSentKey = null;
|
|
this.pointerAnnounced = null;
|
|
this.pendingPointerContext = null;
|
|
this.transcripts = { assistant: '' };
|
|
if (removeUi) {
|
|
this.disposed = true;
|
|
this.status = 'idle';
|
|
this.input.detachBindings();
|
|
this.radio.detachObservers();
|
|
this.signal?.removeEventListener('abort', this.lifetimeAbort);
|
|
this.ui?.root?.remove();
|
|
this.emit({ type: 'disposed' });
|
|
} else if (!preserveStatus) this.setStatus('idle', msg('Voice off'));
|
|
}
|
|
}
|
|
|
|
export function createGeminiSession(options) {
|
|
const controller = new GeminiSessionController(options);
|
|
return {
|
|
controller,
|
|
capabilities: {
|
|
costControls: false,
|
|
pushToTalk: true,
|
|
advisoryLimit: t(
|
|
'Gemini voice sessions have a time limit. When a session expires, start voice again for a new conversation.',
|
|
),
|
|
},
|
|
start: (settings) => controller.start(settings),
|
|
getStartOptions: () => ({
|
|
pushToTalk: Boolean(controller.input.pushToTalkMode),
|
|
}),
|
|
stop: (settings) => controller.stop(settings),
|
|
sendText: (text) => controller.sendTextCommand(text),
|
|
sendMapEvent: (event) => controller.notifyMapEvent(event),
|
|
ignoreButtonClick: () => Boolean(controller.spaceKeyHeld),
|
|
bindControls: () => controller.input.bindPushToTalkShortcut(),
|
|
};
|
|
}
|