@bililive-tools/manager/lib/FFMPEGRecorder.js

Batch scheduling recorders

import EventEmitter from "node:events";
import { createFFMPEGBuilder, StreamManager, utils } from "./index.js";
import { createInvalidStreamChecker, assert } from "./utils.js";
export class FFMPEGRecorder extends EventEmitter {
    onEnd;
    command;
    streamManager;
    timeoutChecker;
    hasSegment;
    getSavePath;
    segment;
    ffmpegOutputOptions = [];
    inputOptions = [];
    isHls = false;
    disableDanma = false;
    url;
    constructor(opts, onEnd) {
        super();
        this.onEnd = onEnd;
        const hasSegment = !!opts.segment;
        this.disableDanma = opts.disableDanma ?? false;
        this.streamManager = new StreamManager(opts.getSavePath, hasSegment, this.disableDanma, opts.videoFormat);
        this.timeoutChecker = utils.createTimeoutChecker(() => this.onEnd("ffmpeg timeout"), 3 * 10e3);
        this.hasSegment = hasSegment;
        this.getSavePath = opts.getSavePath;
        this.ffmpegOutputOptions = opts.outputOptions;
        this.inputOptions = opts.inputOptions ?? [];
        this.url = opts.url;
        this.segment = opts.segment;
        this.isHls = opts.isHls ?? false;
        this.command = this.createCommand();
        this.streamManager.on("videoFileCreated", ({ filename }) => {
            this.emit("videoFileCreated", { filename });
        });
        this.streamManager.on("videoFileCompleted", ({ filename }) => {
            this.emit("videoFileCompleted", { filename });
        });
        this.streamManager.on("DebugLog", (data) => {
            this.emit("DebugLog", data);
        });
    }
    createCommand() {
        const invalidCount = this.isHls ? 35 : 15;
        const isInvalidStream = createInvalidStreamChecker(invalidCount);
        const command = createFFMPEGBuilder()
            .input(this.url)
            .inputOptions([
            ...this.inputOptions,
            "-user_agent",
            "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36",
        ])
            .outputOptions(this.ffmpegOutputOptions)
            .output(this.streamManager.videoFilePath)
            .on("error", this.onEnd)
            .on("end", () => this.onEnd("finished"))
            .on("stderr", async (stderrLine) => {
            assert(typeof stderrLine === "string");
            await this.streamManager.handleVideoStarted(stderrLine);
            // TODO:解析时间
            this.emit("DebugLog", { type: "ffmpeg", text: stderrLine });
            const info = this.formatLine(stderrLine);
            if (info) {
                this.emit("progress", info);
            }
            if (isInvalidStream(stderrLine)) {
                this.onEnd("invalid stream");
            }
        })
            .on("stderr", this.timeoutChecker.update);
        if (this.hasSegment) {
            command.outputOptions("-f", "segment", "-segment_time", String(this.segment * 60), "-reset_timestamps", "1");
        }
        return command;
    }
    formatLine(line) {
        if (!line.includes("time=")) {
            return null;
        }
        let time = null;
        const timeMatch = line.match(/time=([0-9:.]+)/);
        if (timeMatch) {
            time = timeMatch[1];
        }
        return {
            time,
        };
    }
    run() {
        this.command.run();
    }
    getArguments() {
        return this.command._getArguments();
    }
    async stop() {
        this.timeoutChecker.stop();
        try {
            // @ts-ignore
            this.command.ffmpegProc?.stdin?.write("q");
            await this.streamManager.handleVideoCompleted();
        }
        catch (err) {
            this.emit("DebugLog", { type: "common", text: String(err) });
        }
    }
    getExtraDataController() {
        return this.streamManager?.getExtraDataController();
    }
}