import { AudioMixingTrack } from "../stream/audiomixingtrack";
import { Track, AudioTrack, Stream } from "../stream";
import { AudioEffectManager } from "./effect";
import { AudioMusicManager } from "./music";
export declare class TrackMixingManager {
    outputTrack: AudioMixingTrack;
    source: AudioTrack;
    effectManager: AudioEffectManager;
    musicManager: AudioMusicManager;
    private playbackEngine;
    private sourcePlayebackState;
    constructor(originSource: Track);
    /**
     * 获取背景音乐返听的状态, 默认打开
     */
    getMusicPlaybackState(): boolean;
    /**
     * 设置背景音乐的返听状态，默认打开
     * @param state boolean
     */
    setMusicPlaybackState(state: boolean): void;
    /**
     * 获取输入音源返听的状态，默认关闭
     */
    getSourcePlaybackState(): boolean;
    /**
     * 设置输入音源的返听状态，默认关闭
     * @param state boolean
     */
    setSourcePlaybackState(state: boolean): void;
    /**
     * 获取音效返听的状态，默认打开
     */
    getEffectPlaybackState(): boolean;
    /**
     * 设置音效返听的状态，默认打开
     */
    setEffectPlaybackState(state: boolean): void;
    setBitrate(kbps: number): void;
    setTag(tag: string): void;
    /**
     * 释放整个混音模块，清除 output/音乐/音效等资源
     * 但是不会释放构造函数传入的原始源
     */
    release(): void;
}
export declare class StreamMixingManager extends TrackMixingManager {
    outputStream: Stream;
    private input;
    constructor(input: Stream);
    /**
     * 设置输出 Stream 的码率
     * @param audio 音频码率
     * @param video 视频码率
     */
    setBitrate(audio?: number, video?: number): void;
}