Updated

node_modules/prism-media/.eslintrc.json

@@ -0,0 +1,132 @@
+{
+  "extends": "eslint:recommended",
+  "parserOptions": {
+    "ecmaVersion": 6
+  },
+  "env": {
+    "es6": true,
+    "node": true
+  },
+  "rules": {
+    "no-extra-parens": ["warn", "all", {
+      "nestedBinaryExpressions": false
+    }],
+    "valid-jsdoc": ["error", {
+      "requireReturn": false,
+      "requireReturnDescription": false,
+      "preferType": {
+        "String": "string",
+        "Number": "number",
+        "Boolean": "boolean",
+        "Function": "function",
+        "object": "Object",
+        "date": "Date",
+        "error": "Error"
+      },
+      "prefer": {
+        "return": "returns"
+      }
+    }],
+
+    "accessor-pairs": "warn",
+    "array-callback-return": "error",
+    "complexity": "warn",
+    "consistent-return": "error",
+    "curly": ["error", "multi-line", "consistent"],
+    "dot-location": ["error", "property"],
+    "dot-notation": "error",
+    "eqeqeq": "error",
+    "no-empty-function": "error",
+    "no-floating-decimal": "error",
+    "no-implied-eval": "error",
+    "no-invalid-this": "error",
+    "no-lone-blocks": "error",
+    "no-multi-spaces": "error",
+    "no-new-func": "error",
+    "no-new-wrappers": "error",
+    "no-new": "error",
+    "no-octal-escape": "error",
+    "no-return-assign": "error",
+    "no-self-compare": "error",
+    "no-sequences": "error",
+    "no-throw-literal": "error",
+    "no-unmodified-loop-condition": "error",
+    "no-unused-expressions": "error",
+    "no-useless-call": "error",
+    "no-useless-concat": "error",
+    "no-useless-escape": "error",
+    "no-void": "error",
+    "no-warning-comments": "warn",
+    "wrap-iife": "error",
+    "yoda": "error",
+
+    "no-label-var": "error",
+    "no-shadow": "error",
+    "no-undef-init": "error",
+
+    "callback-return": "error",
+    "handle-callback-err": "error",
+    "no-mixed-requires": "error",
+    "no-new-require": "error",
+    "no-path-concat": "error",
+
+    "array-bracket-spacing": "error",
+    "block-spacing": "error",
+    "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
+    "comma-dangle": ["error", "always-multiline"],
+    "comma-spacing": "error",
+    "comma-style": "error",
+    "computed-property-spacing": "error",
+    "consistent-this": ["error", "$this"],
+    "eol-last": "error",
+    "func-names": "error",
+    "func-style": ["error", "declaration", { "allowArrowFunctions": true }],
+    "indent": ["error", 2, { "SwitchCase": 1 }],
+    "key-spacing": "error",
+    "keyword-spacing": "error",
+    "max-depth": "error",
+    "max-len": ["error", 120, 2],
+    "max-nested-callbacks": ["error", { "max": 4 }],
+    "max-statements-per-line": ["error", { "max": 2 }],
+    "new-cap": "error",
+    "newline-per-chained-call": ["error", { "ignoreChainWithDepth": 3 }],
+    "no-array-constructor": "error",
+    "no-inline-comments": "error",
+    "no-lonely-if": "error",
+    "no-mixed-operators": "error",
+    "no-multiple-empty-lines": ["error", { "max": 2, "maxEOF": 1, "maxBOF": 0 }],
+    "no-new-object": "error",
+    "no-spaced-func": "error",
+    "no-trailing-spaces": "error",
+    "no-unneeded-ternary": "error",
+    "no-whitespace-before-property": "error",
+    "object-curly-spacing": ["error", "always"],
+    "operator-assignment": "error",
+    "operator-linebreak": ["error", "after"],
+    "padded-blocks": ["error", "never"],
+    "quote-props": ["error", "as-needed"],
+    "quotes": ["error", "single", { "avoidEscape": true, "allowTemplateLiterals": true }],
+    "semi-spacing": "error",
+    "semi": "error",
+    "space-before-blocks": "error",
+    "space-before-function-paren": ["error", "never"],
+    "space-in-parens": "error",
+    "space-infix-ops": "error",
+    "space-unary-ops": "error",
+    "spaced-comment": "error",
+    "unicode-bom": "error",
+
+    "arrow-body-style": "error",
+    "arrow-spacing": "error",
+    "no-duplicate-imports": "error",
+    "no-useless-computed-key": "error",
+    "no-useless-constructor": "error",
+    "prefer-arrow-callback": "error",
+    "prefer-rest-params": "error",
+    "prefer-spread": "error",
+    "prefer-template": "error",
+    "rest-spread-spacing": "error",
+    "template-curly-spacing": "error",
+    "yield-star-spacing": "error"
+  }
+}

node_modules/prism-media/.travis.yml

@@ -0,0 +1,6 @@
+language: node_js
+node_js:
+  - node
+cache:
+  directories:
+    - node_modules

node_modules/prism-media/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
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node_modules/prism-media/README.md

@@ -0,0 +1,29 @@
+# prism-media
+[![Build Status](https://travis-ci.org/hydrabolt/prism-media.svg?branch=master)](https://travis-ci.org/hydrabolt/prism-media)
+[![dependencies](https://david-dm.org/hydrabolt/prism-media/status.svg)](https://david-dm.org/hydrabolt/prism-media)
+[![devDependencies](https://david-dm.org/hydrabolt/prism-media/dev-status.svg)](https://david-dm.org/hydrabolt/prism-media?type=dev)
+
+Makes programmatically transcoding media easier
+
+`npm install --save hydrabolt/prism-media`
+
+```js
+const Prism = require('prism-media');
+const fs = require('fs');
+
+const prism = new Prism();
+
+const transcoder = prism.transcode({
+  type: 'ffmpeg',
+  media: './test/test.mp3',
+  ffmpegArguments: [
+    '-analyzeduration', '0',
+    '-loglevel', '0',
+    '-f', 's16le',
+    '-ar', '48000',
+    '-ac', '2',
+  ],
+});
+
+transcoder.output.pipe(fs.createWriteStream('./test/test.pcm'));
+```

node_modules/prism-media/package.json

@@ -0,0 +1,56 @@
+{
+  "_from": "prism-media@^0.0.3",
+  "_id": "prism-media@0.0.3",
+  "_inBundle": false,
+  "_integrity": "sha512-c9KkNifSMU/iXT8FFTaBwBMr+rdVcN+H/uNv1o+CuFeTThNZNTOrQ+RgXA1yL/DeLk098duAeRPP3QNPNbhxYQ==",
+  "_location": "/prism-media",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "prism-media@^0.0.3",
+    "name": "prism-media",
+    "escapedName": "prism-media",
+    "rawSpec": "^0.0.3",
+    "saveSpec": null,
+    "fetchSpec": "^0.0.3"
+  },
+  "_requiredBy": [
+    "/discord.js"
+  ],
+  "_resolved": "https://registry.npmjs.org/prism-media/-/prism-media-0.0.3.tgz",
+  "_shasum": "8842d4fae804f099d3b48a9a38e3c2bab6f4855b",
+  "_spec": "prism-media@^0.0.3",
+  "_where": "C:\\Users\\matia\\Madebot\\node_modules\\discord.js",
+  "author": {
+    "name": "Amish Shah",
+    "email": "amishshah.2k@gmail.com"
+  },
+  "bugs": {
+    "url": "https://github.com/hydrabolt/prism-media/issues"
+  },
+  "bundleDependencies": false,
+  "deprecated": false,
+  "description": "Makes transcoding media easier",
+  "devDependencies": {
+    "eslint": "^3.12.2"
+  },
+  "homepage": "https://github.com/hydrabolt/prism-media#readme",
+  "keywords": [
+    "audio",
+    "media",
+    "ffmpeg"
+  ],
+  "license": "Apache-2.0",
+  "main": "src/index.js",
+  "name": "prism-media",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/hydrabolt/prism-media.git"
+  },
+  "scripts": {
+    "lint": "eslint src && eslint test",
+    "test": "npm run lint"
+  },
+  "version": "0.0.3"
+}

node_modules/prism-media/src/Prism.js

@@ -0,0 +1,17 @@
+const MediaTranscoder = require('./transcoders/MediaTranscoder');
+
+class Prism {
+  constructor() {
+    this.transcoder = new MediaTranscoder(this);
+  }
+
+  createTranscoder(...args) {
+    return this.transcode(...args);
+  }
+
+  transcode(...args) {
+    return this.transcoder.transcode(...args);
+  }
+}
+
+module.exports = Prism;

node_modules/prism-media/src/index.js

@@ -0,0 +1,6 @@
+const Prism = require('./Prism');
+const MediaTranscoder = require('./transcoders/MediaTranscoder');
+
+Prism.MediaTranscoder = MediaTranscoder;
+
+module.exports = Prism;

node_modules/prism-media/src/opus/OggOpus.js

@@ -0,0 +1,90 @@
+const { Transform } = require('stream');
+
+const OGG_PAGE_HEADER_SIZE = 26;
+const STREAM_STRUCTURE_VERSION = 0;
+
+const OGGS_HEADER = Buffer.from('OggS'.split('').map(x => x.charCodeAt(0)));
+const OPUS_HEAD = Buffer.from('OpusHead'.split('').map(x => x.charCodeAt(0)));
+const OPUS_TAGS = Buffer.from('OpusTags'.split('').map(x => x.charCodeAt(0)));
+
+class OggOpusTransform extends Transform {
+  constructor() {
+    super();
+    this._remainder = null;
+    this._head = null;
+  }
+
+  _transform(chunk, encoding, done) {
+    if (this._remainder) {
+      chunk = Buffer.concat([this._remainder, chunk]);
+      this._remainder = null;
+    }
+
+    while (chunk) {
+      try {
+        const result = this.readPage(chunk);
+        if (result) chunk = result;
+        else break;
+      } catch (err) {
+        this.emit('error', err);
+      }
+    }
+    this._remainder = chunk;
+    done();
+  }
+
+  /**
+   * Reads a page from a buffer
+   * @param {Buffer} chunk The chunk containing the page
+   * @returns {boolean|Buffer}
+   */
+  readPage(chunk) {
+    if (chunk.length < OGG_PAGE_HEADER_SIZE) {
+      return false;
+    }
+    if (!chunk.slice(0, 4).equals(OGGS_HEADER)) {
+      throw Error(`capture_pattern is not ${OGGS_HEADER}`);
+    }
+    if (chunk.readUInt8(4) !== STREAM_STRUCTURE_VERSION) {
+      throw Error(`stream_structure_version is not ${STREAM_STRUCTURE_VERSION}`);
+    }
+
+    const pageSegments = chunk.readUInt8(26),
+      table = chunk.slice(27, 27 + pageSegments);
+
+    let sizes = [], totalSize = 0;
+
+    for (let i = 0; i < pageSegments;) {
+      let size = 0, x = 255;
+      while (x === 255) {
+        x = table.readUInt8(i);
+        i++;
+        size += x;
+      }
+      sizes.push(size);
+      totalSize += size;
+    }
+
+    if (chunk.length < 27 + pageSegments + totalSize) {
+      return false;
+    }
+
+    let start = 27 + pageSegments;
+    for (const size of sizes) {
+      const segment = chunk.slice(start, start + size);
+      const header = segment.slice(0, 8);
+      if (this._head) {
+        if (header.equals(OPUS_TAGS)) this.emit('opusTags', segment);
+        else this.push(segment);
+      } else if (header.equals(OPUS_HEAD)) {
+        this._head = segment;
+      } else {
+        throw Error(`Invalid segment ${segment}`);
+      }
+      start += size;
+    }
+    return chunk.slice(start);
+  }
+}
+
+module.exports = OggOpusTransform;

node_modules/prism-media/src/transcoders/MediaTranscoder.js

@@ -0,0 +1,31 @@
+const Ffmpeg = require('./ffmpeg/Ffmpeg');
+
+const transcoders = [
+  'ffmpeg',
+];
+
+class MediaTranscoder {
+  constructor(prism) {
+    this.prism = prism;
+    this.ffmpeg = new Ffmpeg(this);
+  }
+
+  static verifyOptions(options) {
+    if (!options) throw new Error('Options must be passed to MediaTranscoder.transcode()');
+    if (!options.type) throw new Error('Options.type must be passed to MediaTranscoder.transcode()');
+    if (!transcoders.includes(options.type)) throw new Error(`Options.type must be: ${transcoders.join(' ')}`);
+    return options;
+  }
+
+  /**
+   * Transcodes a media stream based on specified options
+   * @param {Object} options the options to use when transcoding
+   * @returns {ReadableStream} the transcodeed stream
+   */
+  transcode(options) {
+    options = MediaTranscoder.verifyOptions(options);
+    return this[options.type].transcode(options);
+  }
+}
+
+module.exports = MediaTranscoder;

node_modules/prism-media/src/transcoders/ffmpeg/Ffmpeg.js

@@ -0,0 +1,51 @@
+const ChildProcess = require('child_process');
+const FfmpegProcess = require('./FfmpegProcess');
+
+class FfmpegTranscoder {
+  constructor(mediaTranscoder) {
+    this.mediaTranscoder = mediaTranscoder;
+    this.command = FfmpegTranscoder.selectFfmpegCommand();
+    this.processes = [];
+  }
+
+  static verifyOptions(options) {
+    if (!options) throw new Error('Options not provided!');
+    if (!options.media) throw new Error('Media must be provided');
+    if (!options.ffmpegArguments || !(options.ffmpegArguments instanceof Array)) {
+      throw new Error('FFMPEG Arguments must be an array');
+    }
+    if (options.ffmpegArguments.includes('-i')) return options;
+    if (typeof options.media === 'string') {
+      options.ffmpegArguments = ['-i', `${options.media}`].concat(options.ffmpegArguments).concat(['pipe:1']);
+    } else {
+      options.ffmpegArguments = ['-i', '-'].concat(options.ffmpegArguments).concat(['pipe:1']);
+    }
+    return options;
+  }
+
+  /**
+   * Transcodes an input using FFMPEG
+   * @param {FfmpegTranscoderOptions} options the options to use
+   * @returns {FfmpegProcess} the created FFMPEG process
+   * @throws {FFMPEGOptionsError}
+   */
+  transcode(options) {
+    if (!this.command) this.command = FfmpegTranscoder.selectFfmpegCommand();
+    const proc = new FfmpegProcess(this, FfmpegTranscoder.verifyOptions(options));
+    this.processes.push(proc);
+    return proc;
+  }
+
+  static selectFfmpegCommand() {
+    try {
+      return require('ffmpeg-binaries');
+    } catch (err) {
+      for (const command of ['ffmpeg', 'avconv', './ffmpeg', './avconv']) {
+        if (!ChildProcess.spawnSync(command, ['-h']).error) return command;
+      }
+      throw new Error('FFMPEG not found');
+    }
+  }
+}
+
+module.exports = FfmpegTranscoder;

node_modules/prism-media/src/transcoders/ffmpeg/FfmpegProcess.js

@@ -0,0 +1,95 @@
+const EventEmitter = require('events').EventEmitter;
+const ChildProcess = require('child_process');
+
+/**
+ * A spawned FFMPEG process
+ */
+class FfmpegProcess extends EventEmitter {
+  constructor(ffmpegTranscoder, options) {
+    super();
+    /**
+     * The ffmpeg process
+     * @type {ChildProcess}
+     */
+    this.process = ChildProcess.spawn(ffmpegTranscoder.command, options.ffmpegArguments);
+    /**
+     * The FFMPEG transcoder that created this process
+     * @type {FfmpegTranscoder}
+     */
+    this.transcoder = ffmpegTranscoder;
+    /**
+     * The input media
+     * @type {?ReadableStream|string}
+     */
+    this.inputMedia = options.media;
+
+    if (typeof this.inputMedia !== 'string') {
+      try {
+        this.connectStream(this.inputMedia);
+      } catch (e) {
+        this.emit('error', e, 'instantiation');
+      }
+    } else {
+      this.attachErrorHandlers();
+    }
+
+    this.on('error', this.kill.bind(this));
+    this.once('end', this.kill.bind(this));
+  }
+
+  /**
+   * The ffmpeg output stream
+   * @type {?ReadableStream}
+   */
+  get output() {
+    return this.process ? this.process.stdout : null;
+  }
+
+  attachErrorHandlers() {
+    this.process.stdin.on('error', e => {
+      // if not killed
+      if (this.process) {
+        this.emit('error', e, 'ffmpegProcess.stdin');
+      }
+    });
+    this.process.stdout.on('error', e => {
+      // if not killed
+      if (this.process) {
+        this.emit('error', e, 'ffmpegProcess.stdout');
+      }
+    });
+    this.process.on('error', e => this.emit('error', e, 'ffmpegProcess'));
+    this.process.stdout.on('end', () => this.emit('end'));
+  }
+
+  /**
+   * Connects an input stream to the ffmpeg process
+   * @param {ReadableStream} inputMedia the stream to pass to ffmpeg
+   * @returns {ReadableStream} the ffmpeg output stream
+   */
+  connectStream(inputMedia) {
+    if (!this.process) throw new Error('No FFMPEG process available');
+    this.inputMedia = inputMedia;
+    this.inputMedia.pipe(this.process.stdin, { end: false });
+
+    inputMedia.on('error', e => this.emit('error', e, 'inputstream', inputMedia));
+
+    this.attachErrorHandlers();
+
+    return this.process.stdout;
+  }
+
+  /**
+   * Kills the ffmpeg process
+   */
+  kill() {
+    if (!this.process) return;
+    if (this.inputMedia && this.inputMedia.unpipe) {
+      this.inputMedia.unpipe(this.process.stdin);
+    }
+    this.process.kill('SIGKILL');
+    this.process = null;
+  }
+}
+
+module.exports = FfmpegProcess;

node_modules/prism-media/test/main.js

@@ -0,0 +1,19 @@
+/* eslint no-console: 0 */
+const Prism = require('../');
+const fs = require('fs');
+
+const prism = new Prism();
+
+const transcoder = prism.transcode({
+  type: 'ffmpeg',
+  media: './test/test.mp3',
+  ffmpegArguments: [
+    '-analyzeduration', '0',
+    '-loglevel', '0',
+    '-f', 's16le',
+    '-ar', '48000',
+    '-ac', '2',
+  ],
+});
+
+transcoder.output.pipe(fs.createWriteStream('./test/test.pcm'));

node_modules/prism-media/test/test.js

@@ -0,0 +1,12 @@
+const fs = require('fs');
+const OggOpusTransform = require('../src/opus/OggOpus');
+const opus = require('node-opus');
+
+const decoder = new opus.Decoder(48000, 2, 1920);
+
+const transformer = new OggOpusTransform();
+
+fs.createReadStream('./test/ts.ogg')
+  .pipe(transformer)
+  .pipe(decoder)
+  .pipe(fs.createWriteStream('./output.opus'));