export declare class M3U8ParseError extends Error {
}
interface BaseChunk {
    url: string;
}
interface NormalChunk extends BaseChunk {
    length: number;
    sequenceId: number;
    isInitialChunk: false;
}
interface InitialChunk extends BaseChunk {
    isInitialChunk: true;
}
interface PlainNormalChunk extends NormalChunk {
    isEncrypted: false;
}
interface EncryptedNormalChunk extends NormalChunk {
    key: string;
    iv: string;
    isEncrypted: true;
}
interface PlainInitialChunk extends InitialChunk {
    isEncrypted: false;
}
interface EncryptedInitialChunk extends InitialChunk {
    key: string;
    iv: string;
    isEncrypted: true;
}
export type M3U8Chunk = PlainNormalChunk | EncryptedNormalChunk | PlainInitialChunk | EncryptedInitialChunk;
export interface Stream {
    url: string;
    bandwidth: number;
    codecs?: string;
    frameRate?: number;
    resolution?: {
        width: number;
        height: number;
    };
}
export declare const isInitialChunk: (chunk: M3U8Chunk) => chunk is PlainInitialChunk | EncryptedInitialChunk;
export declare const isNormalChunk: (chunk: M3U8Chunk) => chunk is PlainNormalChunk | EncryptedNormalChunk;
export declare const isEncryptedChunk: (chunk: M3U8Chunk) => chunk is EncryptedNormalChunk | EncryptedInitialChunk;
export declare class MasterPlaylist {
    m3u8Content: string;
    m3u8Url: string;
    streams: Stream[];
    constructor({ m3u8Content, m3u8Url }: {
        m3u8Content: string;
        m3u8Url: string;
    });
    private parse;
}
export interface PlaylistParseParams {
    m3u8Content: string;
    m3u8Url?: string;
}
export declare class Playlist {
    m3u8Content: string;
    m3u8Url: string;
    sequenceId: number;
    isEnd: boolean;
    chunks: M3U8Chunk[];
    encryptKeys: string[];
    averageChunkLength: number;
    totalChunkLength: number;
    constructor({ m3u8Content, m3u8Url }: PlaylistParseParams);
    /**
     * 解析基本属性
     */
    private parse;
    /**
     * average length of chunks
     * @returns
     */
    getChunkLength(): number;
    getTotalChunkLength(): number;
}
export default class M3U8 {
    m3u8Content: string;
    m3u8Url: string;
    initPrimaryKey: number;
    constructor({ m3u8Content, m3u8Url, initPrimaryKey, }: {
        m3u8Content: string;
        m3u8Url?: string;
        initPrimaryKey?: number;
    });
    parse(): MasterPlaylist | Playlist;
}
export {};