export type ReferenceAudioFormat = 'mp3' | 'm4a' | 'wav' | 'flac' | 'ogg' | 'unknown';
export interface PreparedReferenceAudio {
    data: Uint8Array;
    mimeType: string;
    sourceFormat: ReferenceAudioFormat;
    transcoded: boolean;
    trimmed: boolean;
    requestedDuration?: number;
    startOffset?: number;
    sourceDuration?: number;
}
export interface ReferenceAudioTranscodeRequest {
    data: Uint8Array;
    filename: string;
    inputMimeType: string;
    sourceFormat: ReferenceAudioFormat;
}
export interface ReferenceAudioTranscodeResult {
    data: Uint8Array;
    mimeType?: string | null;
}
export type ReferenceAudioTranscoder = (request: ReferenceAudioTranscodeRequest) => Promise<ReferenceAudioTranscodeResult>;
export declare const SEEDANCE_R2V_REFERENCE_AUDIO_MAX_DURATION_SECONDS = 15.2;
export interface ReferenceAudioTrimRequest {
    data: Uint8Array;
    filename: string;
    inputMimeType: string;
    sourceFormat: ReferenceAudioFormat;
    duration: number;
    start: number;
}
export interface ReferenceAudioTrimResult {
    data: Uint8Array;
    mimeType?: string | null;
}
export type ReferenceAudioTrimmer = (request: ReferenceAudioTrimRequest) => Promise<ReferenceAudioTrimResult>;
export interface PrepareReferenceAudioOptions {
    transcodeToM4a?: ReferenceAudioTranscoder;
    transcodeToMp3?: ReferenceAudioTranscoder;
    transcodeMp3?: ReferenceAudioTranscoder;
    trimAudio?: ReferenceAudioTrimmer;
    sourceDurationSeconds?: number;
    maxDurationSeconds?: number;
    startOffsetSeconds?: number;
    normalizeToM4a?: boolean;
    normalizeToMp3?: boolean;
}
export declare function normalizeReferenceAudioMimeType(mimeType?: string | null): string;
export declare function detectReferenceAudioFormat(data: Uint8Array, mimeType?: string | null): ReferenceAudioFormat;
export declare function shouldTrimSeedanceReferenceAudio(input: {
    sourceDurationSeconds?: number;
    maxDurationSeconds?: number;
    startOffsetSeconds?: number;
}): boolean;
export declare function prepareReferenceAudioForVideo(data: Uint8Array, mimeType?: string | null, filename?: string, options?: PrepareReferenceAudioOptions): Promise<PreparedReferenceAudio>;
export declare function prepareSeedanceReferenceAudioForVideo(data: Uint8Array, mimeType?: string | null, filename?: string, options?: PrepareReferenceAudioOptions): Promise<PreparedReferenceAudio>;
//# sourceMappingURL=audioReference.d.ts.map