import { Disposable } from "@codingame/monaco-vscode-api/vscode/vs/base/common/lifecycle";
import { Event } from "@codingame/monaco-vscode-api/vscode/vs/base/common/event";
import { ILogService } from "@codingame/monaco-vscode-api/vscode/vs/platform/log/common/log.service";
import { ITtsPlaybackService } from "@codingame/monaco-vscode-api/vscode/vs/workbench/contrib/chat/browser/voiceClient/ttsPlaybackService.service";
export declare class TtsPlaybackService extends Disposable implements ITtsPlaybackService {
    private readonly logService;
    readonly _serviceBrand: undefined;
    constructor(logService: ILogService);
    private _window;
    private _playbackCtx;
    private _playbackTurn;
    private _playbackGen;
    private _analyserNode;
    private _isPlaying;
    private _lastPlayedSamples;
    private readonly _onPlaybackStarted;
    readonly onPlaybackStarted: Event<void>;
    private readonly _onPlaybackStopped;
    readonly onPlaybackStopped: Event<void>;
    get isPlaying(): boolean;
    get analyserNode(): AnalyserNode | undefined;
    getLastPlayedSamples(): Float32Array | null;
    ensureContext(window: Window & typeof globalThis): AudioContext;
    playAudioChunk(audio: string, isFinal: boolean, window: Window & typeof globalThis): void;
    stopPlayback(): void;
    /** Close the AudioContext entirely (for full teardown). */
    closeContext(): void;
    private _ensurePlayTurn;
    private _writeToPlayBuffer;
    private _startPlayback;
    private _schedulePlayStop;
    private _captureSamples;
    dispose(): void;
}