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<h1><a href="../index.html">All files</a> / <a href="index.html">src</a> process.ts</h1> |
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<span class="strong">86.93% </span> |
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<span class="quiet">Statements</span> |
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<span class='fraction'>153/176</span> |
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<span class="strong">87.87% </span> |
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<span class='fraction'>29/33</span> |
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<span class="strong">100% </span> |
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<span class='fraction'>4/4</span> |
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<span class="strong">86.93% </span> |
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<span class='fraction'>153/176</span> |
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Press <em>n</em> or <em>j</em> to go to the next uncovered block, <em>b</em>, <em>p</em> or <em>k</em> for the previous block. |
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<pre><table class="coverage"> |
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<tr><td class="line-count quiet"><a name='L1'></a><a href='#L1'>1</a> |
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import { spawn } from 'node:child_process' |
|
|
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import { isWindows } from './utils/platform' |
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import { |
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extractErrorMessage, |
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extractProgress, |
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CodecDataExtractor |
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} from './utils/parsing' |
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import LineBuffer from './utils/line-buffer' |
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import { InputCodecInformation, ProgressInformation } from './utils/data-types' |
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import { Readable, Writable } from 'node:stream' |
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|
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export type RunResult = { |
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stderr: string |
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stdout: string |
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} |
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|
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export type RunOptions = { |
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nice?: number |
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cwd?: string |
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timeout?: number |
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onProgress?: (progress: ProgressInformation) => void |
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onCodecData?: (data: InputCodecInformation) => void |
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onStderr?: (line: string) => void |
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} |
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|
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export type ProcessOptions = RunOptions & { |
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args: string[] |
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captureStdout?: boolean |
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inputStream?: Readable |
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outputStream?: Writable |
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} |
|
|
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export class FfmpegProcess implements ProcessOptions { |
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args: string[] |
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nice?: number |
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cwd?: string |
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timeout?: number |
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captureStdout?: boolean |
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inputStream?: Readable |
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outputStream?: Writable |
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onProgress?: (progress: ProgressInformation) => void |
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onCodecData?: (data: InputCodecInformation) => void |
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onStderr?: (line: string) => void |
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|
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constructor(options: ProcessOptions) { |
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this.args = options.args |
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this.nice = options.nice |
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this.cwd = options.cwd |
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this.timeout = options.timeout |
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this.captureStdout = options.captureStdout |
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this.inputStream = options.inputStream |
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this.outputStream = options.outputStream |
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this.onProgress = options.onProgress |
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this.onCodecData = options.onCodecData |
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this.onStderr = options.onStderr |
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|
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this.#validateOptions() |
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} |
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|
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#validateOptions() { |
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if (this.outputStream<span class="branch-0 cbranch-no" title="branch not covered" > && this.captureStdout)</span> <span class="branch-0 cbranch-no" title="branch not covered" >{</span> |
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<span class="cstat-no" title="statement not covered" > throw new Error(</span> |
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<span class="cstat-no" title="statement not covered" > "Cannot use 'captureStdout' when a stream output is present"</span> |
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<span class="cstat-no" title="statement not covered" > )</span> |
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<span class="cstat-no" title="statement not covered" > }</span> |
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} |
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|
|
// TODO return a compound type that is PromiseLike and has methods on the process (like kill) |
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run(callback?: (err: any, result?: any) => any): Promise<RunResult> { |
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let cmd = process.env.FFMPEG_PATH || 'ffmpeg' |
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let args: string[] = [...this.args] |
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|
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let { onProgress, onCodecData, onStderr } = this |
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|
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if (this.nice && this.nice !== 0 && !isWindows) { |
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args = ['-n', this.nice.toString(), cmd, ...args] |
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cmd = 'nice' |
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} |
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|
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let promise: Promise<RunResult> = new Promise((resolve, reject) => { |
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let child = spawn(cmd, args, { |
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cwd: this.cwd, |
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timeout: this.timeout, |
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windowsHide: true |
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}) |
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|
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let stderr = new LineBuffer() |
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let stdout = new LineBuffer() |
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|
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if (onStderr) { |
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stderr.on('line', onStderr) |
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} |
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|
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if (onProgress) { |
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stderr.on('line', (line: string) => { |
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let progress = extractProgress(line) |
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if (progress) { |
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onProgress?.(progress) |
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} |
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}) |
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} |
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|
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if (onCodecData) { |
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let extractor = new CodecDataExtractor(onCodecData) |
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stderr.on('line', (line: string) => { |
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if (!extractor.done) { |
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extractor.processLine(line) |
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} |
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}) |
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} |
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child.on('error', (err) => reject(err)) |
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|
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child.on('close', (code, signal) => { |
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stderr.close() |
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stdout.close() |
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|
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if (signal) { |
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reject(new Error(`ffmpeg was killed with signal ${signal}`)) |
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} else if (code) { |
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let message = `ffmpeg exited with code ${code}` |
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let error = extractErrorMessage(stderr.lines) |
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if (error) { |
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message = `${message}:\n${error}` |
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} |
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reject(new Error(message)) |
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} else { |
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resolve({ |
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stdout: stdout.toString(), |
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stderr: stderr.toString() |
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}) |
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} |
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}) |
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if (this.inputStream) <span class="branch-0 cbranch-no" title="branch not covered" >{</span> |
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<span class="cstat-no" title="statement not covered" > this.inputStream.pipe(child.stdin)</span> |
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<span class="cstat-no" title="statement not covered" > this.inputStream.on('error', (err) => {</span> |
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<span class="cstat-no" title="statement not covered" > // TODO make a specific error type</span> |
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<span class="cstat-no" title="statement not covered" > reject(err)</span> |
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<span class="cstat-no" title="statement not covered" ></span> |
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<span class="cstat-no" title="statement not covered" > child.kill()</span> |
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<span class="cstat-no" title="statement not covered" > })</span> |
|
<span class="cstat-no" title="statement not covered" ></span> |
|
<span class="cstat-no" title="statement not covered" > // Prevent stdin errors from bubbling up, ffmpeg will crash anyway</span> |
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<span class="cstat-no" title="statement not covered" > child.stdin.on('error', () => {})</span> |
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<span class="cstat-no" title="statement not covered" > }</span> |
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|
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child.stderr.on('data', (data) => stderr.append(data.toString())) |
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|
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if (this.outputStream) <span class="branch-0 cbranch-no" title="branch not covered" >{</span> |
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<span class="cstat-no" title="statement not covered" > child.stdout.pipe(this.outputStream)</span> |
|
<span class="cstat-no" title="statement not covered" ></span> |
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<span class="cstat-no" title="statement not covered" > this.outputStream.on('error', (err) => {</span> |
|
<span class="cstat-no" title="statement not covered" > // TODO make a specific error type</span> |
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<span class="cstat-no" title="statement not covered" > reject(err)</span> |
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<span class="cstat-no" title="statement not covered" ></span> |
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<span class="cstat-no" title="statement not covered" > child.kill()</span> |
|
<span class="cstat-no" title="statement not covered" > })</span> |
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} else if (this.captureStdout) { |
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child.stdout.on('data', (data) => stdout.append(data.toString())) |
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} |
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}) |
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|
|
if (callback) { |
|
promise.then( |
|
(value) => callback(null, value), |
|
(reason) => callback(reason) |
|
) |
|
} |
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|
|
return promise |
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} |
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} |
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</pre></td></tr></table></pre> |
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<div class='push'></div> |
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</div> |
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<div class='footer quiet pad2 space-top1 center small'> |
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Code coverage generated by |
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<a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a> |
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at 2023-11-17T09:02:42.005Z |
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window.onload = function () { |
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