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✨ feat: Rework on streaming to use WebM format

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This commit is contained in:
Yuzu
2024-06-21 00:30:21 +07:00
parent 237a041301
commit a8062b5fe2
14 changed files with 1553 additions and 400 deletions
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22
example/test.ts
View File

@@ -2,6 +2,7 @@ import NekoMelody from "../src";
import Speaker from "speaker";
import ffmpeg from "fluent-ffmpeg";
import { YtDlpProvider } from "../src/providers";
const main = async () => {
// Create the Speaker instance
@@ -9,18 +10,23 @@ const main = async () => {
const videoId = "9PuudPiyma4";
// Get the stream from the URL
const stream = await NekoMelody.stream(
`https://www.youtube.com/watch?v=${videoId}`,
);
// Providers
const providers = [new YtDlpProvider()];
const player = NekoMelody.createPlayer(providers);
await player.play(`https://www.youtube.com/watch?v=${videoId}`);
if (!player.stream) {
console.error("No input stream");
return;
}
// PCM data from stdin gets piped into the speaker
let audioStream = stream;
const ffmpegProcess = ffmpeg()
.input(audioStream)
.input(player.stream)
.format("s16le") // Output format (PCM 16-bit little-endian)
//.audioChannels(2) // Number of audio channels
//.audioFrequency(44100) // Sample rate
.audioChannels(2)
.audioFrequency(44100)
.on("error", (err) => {
console.error("An error occurred:", err.message);
})

3
package.json
View File

@@ -42,7 +42,10 @@
"dependencies": {
"axios": "^1.7.2",
"fluent-ffmpeg": "^2.1.3",
"music-metadata": "^8.3.0",
"play-audio": "^0.5.2",
"play-dl": "github:YuzuZensai/play-dl-test#test",
"readable-web-to-node-stream": "^3.0.2",
"speaker": "^0.5.5",
"yt-dlp-wrap": "^2.3.12"
}

121
pnpm-lock.yaml generated
View File

@@ -14,9 +14,18 @@ importers:
fluent-ffmpeg:
specifier: ^2.1.3
version: 2.1.3
music-metadata:
specifier: ^8.3.0
version: 8.3.0
play-audio:
specifier: ^0.5.2
version: 0.5.2
play-dl:
specifier: github:YuzuZensai/play-dl-test#test
version: https://codeload.github.com/YuzuZensai/play-dl-test/tar.gz/45fefec62445eba6b10359a446d3ec7d28587f86
readable-web-to-node-stream:
specifier: ^3.0.2
version: 3.0.2
speaker:
specifier: ^0.5.5
version: 0.5.5
@@ -432,6 +441,9 @@ packages:
'@swc/types@0.1.8':
resolution: {integrity: sha512-RNFA3+7OJFNYY78x0FYwi1Ow+iF1eF5WvmfY1nXPOEH4R2p/D4Cr1vzje7dNAI2aLFqpv8Wyz4oKSWqIZArpQA==}
'@tokenizer/token@0.3.0':
resolution: {integrity: sha512-OvjF+z51L3ov0OyAU0duzsYuvO01PH7x4t6DJx+guahgTnBHkhJdG7soQeTSFLWN3efnHyibZ4Z8l2EuWwJN3A==}
'@types/estree@1.0.5':
resolution: {integrity: sha512-/kYRxGDLWzHOB7q+wtSUQlFrtcdUccpfy+X+9iMBpHK8QLLhx2wIPYuS5DYtR9Wa/YlZAbIovy7qVdB1Aq6Lyw==}
@@ -620,6 +632,10 @@ packages:
concat-map@0.0.1:
resolution: {integrity: sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==}
content-type@1.0.5:
resolution: {integrity: sha512-nTjqfcBFEipKdXCv4YDQWCfmcLZKm81ldF0pAopTvyrFGVbcR6P/VAAd5G7N+0tTr8QqiU0tFadD6FK4NtJwOA==}
engines: {node: '>= 0.6'}
cross-spawn@7.0.3:
resolution: {integrity: sha512-iRDPJKUPVEND7dHPO8rkbOnPpyDygcDFtWjpeWNCgy8WP2rXcxXL8TskReQl6OrB2G7+UJrags1q15Fudc7G6w==}
engines: {node: '>= 8'}
@@ -746,6 +762,10 @@ packages:
resolution: {integrity: sha512-XXTUwCvisa5oacNGRP9SfNtYBNAMi+RPwBFmblZEF7N7swHYQS6/Zfk7SRwx4D5j3CH211YNRco1DEMNVfZCnQ==}
engines: {node: '>=16.0.0'}
file-type@18.7.0:
resolution: {integrity: sha512-ihHtXRzXEziMrQ56VSgU7wkxh55iNchFkosu7Y9/S+tXHdKyrGjVK0ujbqNnsxzea+78MaLhN6PGmfYSAv1ACw==}
engines: {node: '>=14.16'}
file-uri-to-path@1.0.0:
resolution: {integrity: sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw==}
@@ -829,6 +849,9 @@ packages:
resolution: {integrity: sha512-B4FFZ6q/T2jhhksgkbEW3HBvWIfDW85snkQgawt07S7J5QXTk6BkNV+0yAeZrM5QpMAdYlocGoljn0sJ/WQkFw==}
engines: {node: '>=10.17.0'}
ieee754@1.2.1:
resolution: {integrity: sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA==}
ignore@5.3.1:
resolution: {integrity: sha512-5Fytz/IraMjqpwfd34ke28PTVMjZjJG2MPn5t7OE4eUCUNf8BAa7b5WUS9/Qvr6mwOQS7Mk6vdsMno5he+T8Xw==}
engines: {node: '>= 4'}
@@ -841,6 +864,9 @@ packages:
resolution: {integrity: sha512-JmXMZ6wuvDmLiHEml9ykzqO6lwFbof0GG4IkcGaENdCRDDmMVnny7s5HsIgHCbaq0w2MyPhDqkhTUgS2LU2PHA==}
engines: {node: '>=0.8.19'}
inherits@2.0.4:
resolution: {integrity: sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==}
is-binary-path@2.1.0:
resolution: {integrity: sha512-ZMERYes6pDydyuGidse7OsHxtbI7WVeUEozgR/g7rd0xUimYNlvZRE/K2MgZTjWy725IfelLeVcEM97mmtRGXw==}
engines: {node: '>=8'}
@@ -925,6 +951,10 @@ packages:
resolution: {integrity: sha512-9hp3Vp2/hFQUiIwKo8XCeFVnrg8Pk3TYNPIR7tJADKi5YfcF7vEaK7avFHTlSy3kOKYaJQaalfEo6YuXdceBOQ==}
engines: {node: 14 || >=16.14}
media-typer@1.1.0:
resolution: {integrity: sha512-aisnrDP4GNe06UcKFnV5bfMNPBUw4jsLGaWwWfnH3v02GnBuXX2MCVn5RbrWo0j3pczUilYblq7fQ7Nw2t5XKw==}
engines: {node: '>= 0.8'}
merge-stream@2.0.0:
resolution: {integrity: sha512-abv/qOcuPfk3URPfDzmZU1LKmuw8kT+0nIHvKrKgFrwifol/doWcdA4ZqsWQ8ENrFKkd67Mfpo/LovbIUsbt3w==}
@@ -962,6 +992,10 @@ packages:
ms@2.1.2:
resolution: {integrity: sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==}
music-metadata@8.3.0:
resolution: {integrity: sha512-Mjt+Mqea2gooB+14XhJBxuGJVXrmAlWgeyBHlYRKSl7RfA92ktoJBz+fZ25zOa0yqKqg47ocNAngWE/WQOPYbw==}
engines: {node: ^14.13.1 || >=16.0.0}
mz@2.7.0:
resolution: {integrity: sha512-z81GNO7nnYMEhrGh9LeymoE4+Yr0Wn5McHIZMK5cfQCl+NDX08sCZgUc9/6MHni9IWuFLm1Z3HTCXu2z9fN62Q==}
@@ -1019,6 +1053,10 @@ packages:
resolution: {integrity: sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==}
engines: {node: '>=8'}
peek-readable@5.0.0:
resolution: {integrity: sha512-YtCKvLUOvwtMGmrniQPdO7MwPjgkFBtFIrmfSbYmYuq3tKDV/mcfAhBth1+C3ru7uXIZasc/pHnb+YDYNkkj4A==}
engines: {node: '>=14.16'}
picomatch@2.3.1:
resolution: {integrity: sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==}
engines: {node: '>=8.6'}
@@ -1070,6 +1108,14 @@ packages:
queue-microtask@1.2.3:
resolution: {integrity: sha512-NuaNSa6flKT5JaSYQzJok04JzTL1CA6aGhv5rfLW3PgqA+M2ChpZQnAC8h8i4ZFkBS8X5RqkDBHA7r4hej3K9A==}
readable-stream@3.6.2:
resolution: {integrity: sha512-9u/sniCrY3D5WdsERHzHE4G2YCXqoG5FTHUiCC4SIbr6XcLZBY05ya9EKjYek9O5xOAwjGq+1JdGBAS7Q9ScoA==}
engines: {node: '>= 6'}
readable-web-to-node-stream@3.0.2:
resolution: {integrity: sha512-ePeK6cc1EcKLEhJFt/AebMCLL+GgSKhuygrZ/GLaKZYEecIgIECf4UaUuaByiGtzckwR4ain9VzUh95T1exYGw==}
engines: {node: '>=8'}
readdirp@3.6.0:
resolution: {integrity: sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA==}
engines: {node: '>=8.10.0'}
@@ -1097,6 +1143,9 @@ packages:
run-parallel@1.2.0:
resolution: {integrity: sha512-5l4VyZR86LZ/lDxZTR6jqL8AFE2S0IFLMP26AbjsLVADxHdhB/c0GUsH+y39UfCi3dzz8OlQuPmnaJOMoDHQBA==}
safe-buffer@5.2.1:
resolution: {integrity: sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==}
semver@7.6.2:
resolution: {integrity: sha512-FNAIBWCx9qcRhoHcgcJ0gvU7SN1lYU2ZXuSfl04bSC5OpvDHFyJCjdNHomPXxjQlCBU67YW64PzY7/VIEH7F2w==}
engines: {node: '>=10'}
@@ -1137,6 +1186,9 @@ packages:
resolution: {integrity: sha512-HnLOCR3vjcY8beoNLtcjZ5/nxn2afmME6lhrDrebokqMap+XbeW8n9TXpPDOqdGK5qcI3oT0GKTW6wC7EMiVqA==}
engines: {node: '>=12'}
string_decoder@1.3.0:
resolution: {integrity: sha512-hkRX8U1WjJFd8LsDJ2yQ/wWWxaopEsABU1XfkM8A+j0+85JAGppt16cr1Whg6KIbb4okU6Mql6BOj+uup/wKeA==}
strip-ansi@6.0.1:
resolution: {integrity: sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==}
engines: {node: '>=8'}
@@ -1153,6 +1205,10 @@ packages:
resolution: {integrity: sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig==}
engines: {node: '>=8'}
strtok3@7.0.0:
resolution: {integrity: sha512-pQ+V+nYQdC5H3Q7qBZAz/MO6lwGhoC2gOAjuouGf/VO0m7vQRh8QNMl2Uf6SwAtzZ9bOw3UIeBukEGNJl5dtXQ==}
engines: {node: '>=14.16'}
sucrase@3.35.0:
resolution: {integrity: sha512-8EbVDiu9iN/nESwxeSxDKe0dunta1GOlHufmSSXxMD2z2/tMZpDMpvXQGsc+ajGo8y2uYUmixaSRUc/QPoQ0GA==}
engines: {node: '>=16 || 14 >=14.17'}
@@ -1180,6 +1236,10 @@ packages:
resolution: {integrity: sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==}
engines: {node: '>=8.0'}
token-types@5.0.1:
resolution: {integrity: sha512-Y2fmSnZjQdDb9W4w4r1tswlMHylzWIeOKpx0aZH9BgGtACHhrk3OkT52AzwcuqTRBZtvvnTjDBh8eynMulu8Vg==}
engines: {node: '>=14.16'}
tr46@1.0.1:
resolution: {integrity: sha512-dTpowEjclQ7Kgx5SdBkqRzVhERQXov8/l9Ft9dVM9fmg0W0KQSVaXX9T4i6twCPNtYiZM53lpSSUAwJbFPOHxA==}
@@ -1238,6 +1298,9 @@ packages:
uri-js@4.4.1:
resolution: {integrity: sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==}
util-deprecate@1.0.2:
resolution: {integrity: sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==}
webidl-conversions@4.0.2:
resolution: {integrity: sha512-YQ+BmxuTgd6UXZW3+ICGfyqRyHXVlD5GtQr5+qjiNW7bF0cqrzX500HVXPBOvgXb5YnzDd+h0zqyv61KUD7+Sg==}
@@ -1528,6 +1591,8 @@ snapshots:
dependencies:
'@swc/counter': 0.1.3
'@tokenizer/token@0.3.0': {}
'@types/estree@1.0.5': {}
'@types/fluent-ffmpeg@2.1.24':
@@ -1735,6 +1800,8 @@ snapshots:
concat-map@0.0.1: {}
content-type@1.0.5: {}
cross-spawn@7.0.3:
dependencies:
path-key: 3.1.1
@@ -1902,6 +1969,12 @@ snapshots:
dependencies:
flat-cache: 4.0.1
file-type@18.7.0:
dependencies:
readable-web-to-node-stream: 3.0.2
strtok3: 7.0.0
token-types: 5.0.1
file-uri-to-path@1.0.0: {}
fill-range@7.1.1:
@@ -1981,6 +2054,8 @@ snapshots:
human-signals@2.1.0: {}
ieee754@1.2.1: {}
ignore@5.3.1: {}
import-fresh@3.3.0:
@@ -1990,6 +2065,8 @@ snapshots:
imurmurhash@0.1.4: {}
inherits@2.0.4: {}
is-binary-path@2.1.0:
dependencies:
binary-extensions: 2.3.0
@@ -2053,6 +2130,8 @@ snapshots:
lru-cache@10.2.2: {}
media-typer@1.1.0: {}
merge-stream@2.0.0: {}
merge2@1.4.1: {}
@@ -2082,6 +2161,18 @@ snapshots:
ms@2.1.2: {}
music-metadata@8.3.0:
dependencies:
'@tokenizer/token': 0.3.0
content-type: 1.0.5
debug: 4.3.5
file-type: 18.7.0
media-typer: 1.1.0
strtok3: 7.0.0
token-types: 5.0.1
transitivePeerDependencies:
- supports-color
mz@2.7.0:
dependencies:
any-promise: 1.3.0
@@ -2136,6 +2227,8 @@ snapshots:
path-type@4.0.0: {}
peek-readable@5.0.0: {}
picomatch@2.3.1: {}
pirates@4.0.6: {}
@@ -2165,6 +2258,16 @@ snapshots:
queue-microtask@1.2.3: {}
readable-stream@3.6.2:
dependencies:
inherits: 2.0.4
string_decoder: 1.3.0
util-deprecate: 1.0.2
readable-web-to-node-stream@3.0.2:
dependencies:
readable-stream: 3.6.2
readdirp@3.6.0:
dependencies:
picomatch: 2.3.1
@@ -2203,6 +2306,8 @@ snapshots:
dependencies:
queue-microtask: 1.2.3
safe-buffer@5.2.1: {}
semver@7.6.2: {}
shebang-command@2.0.0:
@@ -2241,6 +2346,10 @@ snapshots:
emoji-regex: 9.2.2
strip-ansi: 7.1.0
string_decoder@1.3.0:
dependencies:
safe-buffer: 5.2.1
strip-ansi@6.0.1:
dependencies:
ansi-regex: 5.0.1
@@ -2253,6 +2362,11 @@ snapshots:
strip-json-comments@3.1.1: {}
strtok3@7.0.0:
dependencies:
'@tokenizer/token': 0.3.0
peek-readable: 5.0.0
sucrase@3.35.0:
dependencies:
'@jridgewell/gen-mapping': 0.3.5
@@ -2286,6 +2400,11 @@ snapshots:
dependencies:
is-number: 7.0.0
token-types@5.0.1:
dependencies:
'@tokenizer/token': 0.3.0
ieee754: 1.2.1
tr46@1.0.1:
dependencies:
punycode: 2.3.1
@@ -2342,6 +2461,8 @@ snapshots:
dependencies:
punycode: 2.3.1
util-deprecate@1.0.2: {}
webidl-conversions@4.0.2: {}
whatwg-url@7.1.0:

7
src/index.ts
View File

@@ -1,5 +1,8 @@
import { stream } from "./stream";
import { Player, createPlayer } from "./player";
export { Player, createPlayer };
export default {
stream,
Player,
createPlayer,
};

50
src/player/index.ts Normal file
View File

@@ -0,0 +1,50 @@
import { Readable, Stream } from "stream";
import { Provider } from "../providers/base";
import { SeekableStream } from "../utils/SeekableStream";
export class Player {
private providers: Provider[];
private currentProvider: Provider | null = null;
public _stream: SeekableStream | null = null;
get stream() {
return this._stream?.stream;
}
constructor(providers: Provider[]) {
this.providers = providers;
}
public async play(url: string) {
if (!this.currentProvider) {
const providers = this.providers.filter((provider) =>
provider.canPlay(url),
);
if (providers.length === 0) {
throw new Error("No provider can play this URL");
}
this.currentProvider = providers[0];
}
// TODO: Handle if already playing
const information = await this.currentProvider.getInformation(url);
//console.log(information);
if (information.livestream)
// TODO: Implement livestreams
throw new Error("Livestreams are not supported yet");
else this._stream = new SeekableStream(information, url);
}
public getCurrentSampleRate() {
return this._stream?.information.bitrate || 0;
}
}
export function createPlayer(providers: Provider[]) {
return new Player(providers);
}

17
src/providers/base.ts Normal file
View File

@@ -0,0 +1,17 @@
export interface AudioInformation {
url: string;
fileSize: number;
duration: number;
indexRange: {
start: number;
end: number;
};
bitrate: number;
livestream: boolean;
refreshInfoFunction: () => Promise<AudioInformation>;
}
export abstract class Provider {
abstract canPlay(url: string): boolean;
abstract getInformation(url: string): Promise<AudioInformation>;
}

7
src/providers/index.ts Normal file
View File

@@ -0,0 +1,7 @@
import { YtDlpProvider } from "./yt-dlp";
export default {
YtDlpProvider,
};
export { YtDlpProvider };

49
src/providers/yt-dlp.ts Normal file
View File

@@ -0,0 +1,49 @@
import YTDlpWrap from "yt-dlp-wrap";
import { AudioInformation, Provider } from "./base";
import { getYouTubeFormats } from "../utils/Request";
export class YtDlpProvider extends Provider {
public ytDlpWrap = new YTDlpWrap();
public canPlay(url: string) {
// TODO: Implement this
return true;
}
public async getInformation(url: string) {
const getYtDlpWrapInfo = async () => {
return JSON.parse(
await this.ytDlpWrap.execPromise([
url,
"-f",
"bestaudio[ext=webm]",
//"--extractor-args",
//"youtube:player_client=ios",
"--dump-json",
]),
);
};
const refreshInfoFunction = async () => {
const ytDlpWrapInfo = await getYtDlpWrapInfo();
const formats = await getYouTubeFormats(ytDlpWrapInfo.id);
if (!formats) {
throw new Error("Failed to parse YouTube formats");
}
return {
url: ytDlpWrapInfo.url,
fileSize: ytDlpWrapInfo.filesize,
duration: ytDlpWrapInfo.duration,
indexRange: formats[0].indexRange,
// TODO: Check if this is correct
bitrate: ytDlpWrapInfo.asr, //bitrate: Math.ceil((ytDlpWrapInfo.tbr || 128) * 1000),
livestream: ytDlpWrapInfo.is_live,
refreshInfoFunction,
} as AudioInformation;
};
return await refreshInfoFunction();
}
}

105
src/stream.ts
View File

@@ -1,105 +0,0 @@
import { Readable } from "stream";
import playdl from "play-dl/play-dl";
import YTDlpWrap from "yt-dlp-wrap";
import { Stream } from "./utils/stream";
const ytDlpWrap = new YTDlpWrap();
export const stream = async (url: string): Promise<Readable> => {
const getPlayDlInfo = async () => {
const info = await playdl.video_basic_info(url);
if (!info.format) {
throw new Error("No stream URL found");
}
for (const format of info.format) {
if (format.itag === 140) {
console.log("format", format);
if (
!format.url ||
!format.contentLength ||
!format.approxDurationMs
) {
continue;
}
type DefinedFormat = typeof format & {
url: string;
contentLength: number;
approxDurationMs: number;
};
const newFormat: DefinedFormat = format as DefinedFormat;
return newFormat;
}
}
throw new Error("No stream URL found");
};
const getYtDlpWrapInfo = async () => {
return JSON.parse(
await ytDlpWrap.execPromise([
url,
"-f",
"140",
"--extractor-args",
"youtube:player_client=ios",
"--dump-json",
]),
);
};
const ytDlpWrapInfo = await getYtDlpWrapInfo();
const playDlInfo = await getPlayDlInfo();
console.log("dlp", ytDlpWrapInfo.url);
console.log("play-dl", playDlInfo);
const ytDlpRefreshStreamUrlFunction = async () => {
const info = await getYtDlpWrapInfo();
return info.url;
};
const playDlRefreshStreamUrlFunction = async () => {
const info = await getPlayDlInfo();
if (!info.url) throw new Error("No stream URL found");
return info.url;
};
const ytDlpWrapStream = new Stream(
ytDlpWrapInfo.url,
url,
ytDlpWrapInfo.filesize,
ytDlpWrapInfo.duration,
ytDlpRefreshStreamUrlFunction,
);
const playDlStream = new Stream(
playDlInfo.url,
url,
playDlInfo.contentLength,
Math.ceil(playDlInfo.approxDurationMs / 1000),
playDlRefreshStreamUrlFunction,
);
const stream = playDlStream.stream;
// stream.on("error", (err) => {
// console.error("An error occurred:", err.message);
// });
// stream.on("end", () => {
// console.log("Stream ended.");
// });
// stream.on("close", () => {
// console.log("Stream closed.");
// });
stream.on("finished", () => {
console.log("Stream finished.");
});
return stream;
};

91
src/utils/Request.ts Normal file
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import axios, { AxiosRequestConfig, AxiosResponse } from "axios";
export async function makeStreamRequest(
url: string,
options: AxiosRequestConfig = {},
body?: any,
): Promise<AxiosResponse> {
const { headers = {}, method = "GET" } = options;
let config: AxiosRequestConfig = {
url,
method,
headers,
data: body,
responseType: "stream",
};
// Override / Add config
config = Object.assign(config, options);
try {
const response = await axios(config);
return response;
} catch (err) {
throw err;
}
}
export async function getStream(
url: string,
options: AxiosRequestConfig = { method: "GET" },
): Promise<AxiosResponse<any, any>> {
try {
let response = await makeStreamRequest(url, options);
const visitedUrls = new Set<string>();
// Handle redirection and detect redirection loop
while (
response.status >= 300 &&
response.status < 400 &&
response.headers.location
) {
const redirectUrl = response.headers.location;
if (visitedUrls.has(redirectUrl)) {
throw new Error("Redirection loop detected");
}
visitedUrls.add(redirectUrl);
response = await makeStreamRequest(redirectUrl, options);
}
return response;
} catch (error) {
throw error;
}
}
export async function getYouTubeFormats(id: string) {
const new_url = `https://www.youtube.com/watch?v=${id}&has_verified=1`;
const response = await axios.get(new_url, {
headers: { "accept-language": "en-US,en;q=0.9" },
withCredentials: true,
});
const body = response.data;
const match = body.match(
/var ytInitialPlayerResponse = (.*?)(?=;\s*<\/script>)/,
);
const data = match ? match[1] : null;
if (!data) throw new Error("Failed to get YouTube formats");
try {
let formats = JSON.parse(data).streamingData.adaptiveFormats;
if (!formats) throw new Error("Failed to parse YouTube formats");
// Filters only audio formats that are webm
formats = formats.filter((format: any) =>
format.mimeType.startsWith("audio/webm;"),
);
// Sort the quality of the formats
formats = formats.sort((a: any, b: any) => {
const aQuality = a.audioQuality === "AUDIO_QUALITY_MEDIUM" ? 0 : 1;
const bQuality = b.audioQuality === "AUDIO_QUALITY_MEDIUM" ? 0 : 1;
return aQuality - bQuality;
});
return formats;
} catch (err) {
throw new Error("Failed to parse YouTube formats");
}
}

202
src/utils/SeekableStream.ts Normal file
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import { Readable } from "stream";
import { AudioInformation } from "../providers/base";
import { Timer } from "./Timer";
import { WebmSeeker } from "./WebmSeeker";
import { getStream } from "./Request";
const DEBUG_SIMULATE_FAILURE = false;
export class SeekableStream {
private id: string;
public information: AudioInformation;
private referenceUrl: string;
public stream: WebmSeeker;
private timer: Timer;
private ticking: boolean = false;
private locked: boolean = false;
private destroyed: boolean = false;
private bytesReceived: number = 0;
private bytesRead: number = 0;
private bytesPerRequestLimit = 1 * 1024 * 1024; // 1 MB per request
constructor(information: AudioInformation, referenceUrl: string) {
this.id = Math.random().toString(36).substring(8);
this.information = information;
this.referenceUrl = referenceUrl;
this.stream = new WebmSeeker(0, {
highWaterMark: 5 * 1024 * 1024,
});
this.stream.on("data", (chunk: any) => {
this.bytesRead += chunk.length;
});
this.timer = new Timer(() => {
if (this.ticking) return;
this.ticking = true;
this.timer.reset();
this.tick();
this.ticking = false;
}, 2000);
this.timer.start();
this.tick();
}
private async tick() {
console.log(`[${this.id}] > Ticking...`);
if (this.destroyed) {
console.debug(
`[${this.id}] > Stream already destroyed, not ticking`,
);
this.destroy();
return;
}
this.debugLog();
const isBufferSufficient =
this.stream.readableLength >= this.bytesPerRequestLimit;
if (!this.locked) {
if (
!isBufferSufficient &&
this.bytesReceived < this.information.fileSize
) {
this.locked = true;
const end = Math.min(
this.bytesReceived + this.bytesPerRequestLimit,
this.information.fileSize,
);
const rangeHeader = `bytes=${this.bytesReceived}-${end}`;
const request = await getStream(this.information.url, {
headers: {
range: rangeHeader,
},
}).catch((err: Error) => err);
console.debug(
`[${this.id}] > Requesting range | ${rangeHeader}`,
);
if (request instanceof Error) {
console.debug(
`[${this.id}] > Request error: ${request.message}`,
);
await this.refreshInformation();
this.locked = false;
this.timer.reset();
this.tick();
return;
}
// Simulate failed request 25% of the time
if (DEBUG_SIMULATE_FAILURE && Math.random() < 0.25) {
console.debug(`[${this.id}] > Simulating request failure`);
request.status = 416;
}
if (request.status >= 400) {
console.debug(
`[${this.id}] > Request failed with status ${request.status}`,
);
await this.refreshInformation();
this.locked = false;
this.timer.reset();
this.tick();
return;
}
if (!request.data) {
this.locked = false;
return;
}
console.debug(`[${this.id}] > Request successful`);
const incomingStream = request.data;
incomingStream.on("data", (chunk: any) => {
this.stream.push(chunk);
this.bytesReceived += chunk.length;
});
incomingStream.once("error", async () => {
console.debug(`[${this.id}] > Pipe error, refreshing...`);
this.destroy();
await this.refreshInformation();
this.timer.reset();
this.tick();
});
incomingStream.on("end", async () => {
console.debug(
`[${this.id}] > Full chunk received, unlocking`,
);
this.locked = false;
incomingStream.destroy();
this.debugLog();
});
}
}
if (
this.bytesReceived >= this.information.fileSize &&
this.stream.readableLength === 0
) {
console.debug(`[${this.id}] > Stream completed`);
this.destroy();
return;
}
console.debug(`[${this.id}] > Tick completed`);
}
private getCurrentTimestamp() {
// TODO: Calculate more accurately
const realBitrate =
this.information.fileSize / this.information.duration;
const currentTime = this.bytesRead / realBitrate;
return currentTime;
}
private async refreshInformation() {
console.debug(`[${this.id}] > Refreshing stream info...`);
let information = await this.information.refreshInfoFunction();
this.information = information;
console.debug(`[${this.id}] > Stream info refreshed`);
}
public on(event: string, listener: (...args: any[]) => void) {
this.stream.on(event, listener);
}
private destroy() {
console.debug(`[${this.id}] > Stream destroyed`);
if (!this.timer.isDestroyed()) this.timer.destroy();
if (this.stream) this.stream.destroy();
this.destroyed = true;
}
private debugLog() {
// console.debug("Tick");
const isBufferSufficient =
this.stream.readableLength >= this.bytesPerRequestLimit;
console.debug(
`[${this.id}] > ` +
`Timestamp: ${this.getCurrentTimestamp().toFixed(1)}s / ${this.information.duration.toFixed(1)}s | ` +
`Data Received: ${(this.bytesReceived / (1024 * 1024)).toFixed(3)} MB / ${(this.information.fileSize / (1024 * 1024)).toFixed(3)} MB | ` +
`Data Read: ${(this.bytesRead / (1024 * 1024)).toFixed(3)} MB | ` +
`Buffer Remaining: ${(this.stream.readableLength / (1024 * 1024)).toFixed(3)} MB | ` +
`${!false ? `Buffer Sufficient: ${isBufferSufficient} | ` : ``}` +
`Locked: ${this.locked} | `, // +
//`Fetch Completed: ${this.fetchCompleted}`,
);
}
}

988
src/utils/WebmSeeker.ts Normal file
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@@ -0,0 +1,988 @@
/*
GPL-3.0 License
This file is modified from the original file of the play-dl project.
https://github.com/play-dl/play-dl/blob/main/play-dl/YouTube/classes/WebmSeeker.ts
License URL: https://github.com/play-dl/play-dl/blob/main/LICENSE
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
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To protect your rights, we need to prevent others from denying you
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For example, if you distribute copies of such a program, whether
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not accept this License. Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.
10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License. You are not responsible
for enforcing compliance by third parties with this License.
An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations. If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
11. Patents.
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version. For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.
In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement). To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.
If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.
*/
import { WebmElements, WebmHeader } from "play-audio";
import { Duplex, DuplexOptions } from "node:stream";
enum DataType {
master,
string,
uint,
binary,
float,
}
export enum WebmSeekerState {
READING_HEAD = "READING_HEAD",
READING_DATA = "READING_DATA",
}
interface WebmSeekerOptions extends DuplexOptions {
mode?: "precise" | "granular";
}
const WEB_ELEMENT_KEYS = Object.keys(WebmElements);
export class WebmSeeker extends Duplex {
remaining?: Buffer;
state: WebmSeekerState;
chunk?: Buffer;
cursor: number;
header: WebmHeader;
headfound: boolean;
headerparsed: boolean;
seekfound: boolean;
private data_size: number;
private offset: number;
private data_length: number;
private sec: number;
private time: number;
constructor(sec: number, options: WebmSeekerOptions) {
super(options);
this.state = WebmSeekerState.READING_HEAD;
this.cursor = 0;
this.header = new WebmHeader();
this.headfound = false;
this.headerparsed = false;
this.seekfound = false;
this.data_length = 0;
this.data_size = 0;
this.offset = 0;
this.sec = sec;
this.time = Math.floor(sec / 10) * 10;
}
private get vint_length(): number {
let i = 0;
for (; i < 8; i++) {
if ((1 << (7 - i)) & this.chunk![this.cursor]) break;
}
return ++i;
}
private vint_value(): boolean {
if (!this.chunk) return false;
const length = this.vint_length;
if (this.chunk.length < this.cursor + length) return false;
let value = this.chunk[this.cursor] & ((1 << (8 - length)) - 1);
for (let i = this.cursor + 1; i < this.cursor + length; i++)
value = (value << 8) + this.chunk[i];
this.data_size = length;
this.data_length = value;
return true;
}
cleanup() {
this.cursor = 0;
this.chunk = undefined;
this.remaining = undefined;
}
_read() {}
seek(content_length: number): Error | number {
let clusterlength = 0,
position = 0;
let time_left = (this.sec - this.time) * 1000 || 0;
time_left = Math.round(time_left / 20) * 20;
if (!this.header.segment.cues) return new Error("Failed to Parse Cues");
for (let i = 0; i < this.header.segment.cues.length; i++) {
const data = this.header.segment.cues[i];
if (Math.floor((data.time as number) / 1000) === this.time) {
position = data.position as number;
clusterlength =
(this.header.segment.cues[i + 1]?.position ||
content_length) -
position -
1;
break;
} else continue;
}
if (clusterlength === 0) return position;
return (
this.offset +
Math.round(position + (time_left / 20) * (clusterlength / 500))
);
}
_write(
chunk: Buffer,
_: BufferEncoding,
callback: (error?: Error | null) => void,
): void {
if (this.remaining) {
this.chunk = Buffer.concat([this.remaining, chunk]);
this.remaining = undefined;
} else this.chunk = chunk;
let err: Error | undefined;
if (this.state === WebmSeekerState.READING_HEAD) err = this.readHead();
else if (!this.seekfound) err = this.getClosestBlock();
else err = this.readTag();
if (err) callback(err);
else callback();
}
private readHead(): Error | undefined {
if (!this.chunk) return new Error("Chunk is missing");
while (this.chunk.length > this.cursor) {
const oldCursor = this.cursor;
const id = this.vint_length;
if (this.chunk.length < this.cursor + id) break;
const ebmlID = this.parseEbmlID(
this.chunk.slice(this.cursor, this.cursor + id).toString("hex"),
);
this.cursor += id;
if (!this.vint_value()) {
this.cursor = oldCursor;
break;
}
if (!ebmlID) {
this.cursor += this.data_size + this.data_length;
continue;
}
if (!this.headfound) {
if (ebmlID.name === "ebml") this.headfound = true;
else
return new Error(
"Failed to find EBML ID at start of stream.",
);
}
const data = this.chunk.slice(
this.cursor + this.data_size,
this.cursor + this.data_size + this.data_length,
);
const parse = this.header.parse(ebmlID, data);
if (parse instanceof Error) return parse;
// stop parsing the header once we have found the correct cue
if (ebmlID.name === "seekHead") this.offset = oldCursor;
if (
ebmlID.name === "cueClusterPosition" &&
this.header.segment.cues!.length > 2 &&
this.time ===
(this.header.segment.cues!.at(-2)!.time as number) / 1000
)
this.emit("headComplete");
if (ebmlID.type === DataType.master) {
this.cursor += this.data_size;
continue;
}
if (
this.chunk.length <
this.cursor + this.data_size + this.data_length
) {
this.cursor = oldCursor;
break;
} else this.cursor += this.data_size + this.data_length;
}
this.remaining = this.chunk.slice(this.cursor);
this.cursor = 0;
}
private readTag(): Error | undefined {
if (!this.chunk) return new Error("Chunk is missing");
while (this.chunk.length > this.cursor) {
const oldCursor = this.cursor;
const id = this.vint_length;
if (this.chunk.length < this.cursor + id) break;
const ebmlID = this.parseEbmlID(
this.chunk.slice(this.cursor, this.cursor + id).toString("hex"),
);
this.cursor += id;
if (!this.vint_value()) {
this.cursor = oldCursor;
break;
}
if (!ebmlID) {
this.cursor += this.data_size + this.data_length;
continue;
}
const data = this.chunk.slice(
this.cursor + this.data_size,
this.cursor + this.data_size + this.data_length,
);
const parse = this.header.parse(ebmlID, data);
if (parse instanceof Error) return parse;
if (ebmlID.type === DataType.master) {
this.cursor += this.data_size;
continue;
}
if (
this.chunk.length <
this.cursor + this.data_size + this.data_length
) {
this.cursor = oldCursor;
break;
} else this.cursor += this.data_size + this.data_length;
if (ebmlID.name === "simpleBlock") {
const track =
this.header.segment.tracks![this.header.audioTrack];
if (!track || track.trackType !== 2)
return new Error("No audio Track in this webm file.");
if ((data[0] & 0xf) === track.trackNumber)
this.push(data.slice(4));
}
}
this.remaining = this.chunk.slice(this.cursor);
this.cursor = 0;
}
private getClosestBlock(): Error | undefined {
if (this.sec === 0) {
this.seekfound = true;
return this.readTag();
}
if (!this.chunk) return new Error("Chunk is missing");
this.cursor = 0;
let positionFound = false;
while (!positionFound && this.cursor < this.chunk.length) {
this.cursor = this.chunk.indexOf("a3", this.cursor, "hex");
if (this.cursor === -1)
return new Error("Failed to find nearest Block.");
this.cursor++;
if (!this.vint_value())
return new Error(
"Failed to find correct simpleBlock in first chunk",
);
if (
this.cursor + this.data_length + this.data_length >
this.chunk.length
)
continue;
const data = this.chunk.slice(
this.cursor + this.data_size,
this.cursor + this.data_size + this.data_length,
);
const track = this.header.segment.tracks![this.header.audioTrack];
if (!track || track.trackType !== 2)
return new Error("No audio Track in this webm file.");
if ((data[0] & 0xf) === track.trackNumber) {
this.cursor += this.data_size + this.data_length;
this.push(data.slice(4));
positionFound = true;
} else continue;
}
if (!positionFound)
return new Error("Failed to find nearest correct simple Block.");
this.seekfound = true;
return this.readTag();
}
private parseEbmlID(ebmlID: string) {
if (WEB_ELEMENT_KEYS.includes(ebmlID)) return WebmElements[ebmlID];
else return false;
}
_destroy(
error: Error | null,
callback: (error: Error | null) => void,
): void {
this.cleanup();
callback(error);
}
_final(callback: (error?: Error | null) => void): void {
this.cleanup();
callback();
}
}

283
src/utils/stream.ts
View File

@@ -1,283 +0,0 @@
import { Readable } from "stream";
import axios, { AxiosRequestConfig, AxiosResponse } from "axios";
import { Timer } from "./timer";
const DEBUG_SIMULATE_FAILURE = false;
async function makeStreamRequest(
url: string,
options: AxiosRequestConfig = {},
body?: any,
): Promise<AxiosResponse> {
const { headers = {}, method = "GET" } = options;
let config: AxiosRequestConfig = {
url,
method,
headers,
data: body,
responseType: "stream",
};
// Override / Add config
config = Object.assign(config, options);
try {
const response = await axios(config);
return response;
} catch (err) {
throw err;
}
}
export async function fetchStream(
url: string,
options: AxiosRequestConfig = { method: "GET" },
): Promise<AxiosResponse<any, any>> {
try {
let response = await makeStreamRequest(url, options);
const visitedUrls = new Set<string>();
// Handle redirection and detect redirection loop
while (
response.status >= 300 &&
response.status < 400 &&
response.headers.location
) {
const redirectUrl = response.headers.location;
if (visitedUrls.has(redirectUrl)) {
throw new Error("Redirection loop detected");
}
visitedUrls.add(redirectUrl);
response = await makeStreamRequest(redirectUrl, options);
}
return response;
} catch (error) {
throw error;
}
}
export class Stream {
private id: string;
private url: string;
private referenceUrl: string;
private duration: number;
private timer: Timer;
private locked: boolean = false;
private destroyed: boolean = false;
private fetchCompleted: boolean = false;
public stream: Readable;
private bytesReceived: number = 0;
private contentLength: number;
private inputReadable: Readable | null = null;
private bytesPerRequestLimit = 1 * 1024 * 1024; // 1 MB per request
private refreshStreamUrlFunction: () => Promise<string>;
constructor(
streamUrl: string,
referenceUrl: string,
contentLength: number,
duration: number,
refreshStreamUrlFunction: () => Promise<string>,
) {
this.id = Math.random().toString(36).substring(7);
this.url = streamUrl;
this.referenceUrl = referenceUrl;
this.duration = duration;
this.stream = new Readable({
highWaterMark: 5 * 1024 * 1024,
read() {},
});
this.contentLength = contentLength;
this.refreshStreamUrlFunction = refreshStreamUrlFunction;
this.timer = new Timer(() => {
this.timer.reset();
this.tick();
}, 2000);
this.stream.on("close", () => {
console.debug(
`[${this.id}] > Destination stream closed, destroying...`,
);
this.timer.destroy();
this.destroy();
});
this.timer.start();
this.tick();
}
private debugLog() {
const isBufferSufficient =
this.stream.readableLength >= this.bytesPerRequestLimit;
console.debug(
`[${this.id}] > ` +
`Data Received: ${(this.bytesReceived / (1024 * 1024)).toFixed(3)} MB / ${(this.contentLength / (1024 * 1024)).toFixed(3)} MB | ` +
`Buffer Remaining: ${(this.stream.readableLength / (1024 * 1024)).toFixed(3)} MB | ` +
`${!this.fetchCompleted ? `Buffer Sufficient: ${isBufferSufficient} | ` : ``}` +
`Locked: ${this.locked} | ` +
`Fetch Completed: ${this.fetchCompleted}`,
);
}
private async tick() {
if (this.destroyed) {
console.debug(`[${this.id}] > Stream destroyed, not ticking`);
this.timer.destroy();
return;
}
if (this.stream.destroyed) {
console.debug(
`[${this.id}] > Destination stream destroyed, destroying...`,
);
this.timer.destroy();
this.destroy();
return;
}
const remainingBufferBytes = this.stream.readableLength;
const isBufferSufficient =
remainingBufferBytes >= this.bytesPerRequestLimit;
this.debugLog();
if (!this.locked && !this.fetchCompleted) {
// Check if the remaining buffer size is less than a threshold before fetching the next chunk
if (!isBufferSufficient) {
this.locked = true;
const end = Math.min(
this.bytesReceived + this.bytesPerRequestLimit,
this.contentLength,
);
const rangeHeader = `bytes=${this.bytesReceived}-${end}`;
const request = await fetchStream(this.url, {
headers: {
range: rangeHeader,
},
}).catch((err: Error) => err);
console.log(`[${this.id}] > Requesting range | ${rangeHeader}`);
if (request instanceof Error) {
console.debug(
`[${this.id}] > Request error: ${request.message}`,
);
await this.refreshStreamUrl();
this.locked = false;
this.timer.reset();
this.tick();
return;
}
// Simulate failed request 25% of the time
if (DEBUG_SIMULATE_FAILURE && Math.random() < 0.25) {
console.debug(`[${this.id}] > Simulating request failure`);
request.status = 416;
}
if (request.status >= 400) {
await this.refreshStreamUrl();
this.locked = false;
this.timer.reset();
this.tick();
return;
}
this.inputReadable = request.data;
if (this.inputReadable === null) {
this.locked = false;
return;
}
console.debug(`[${this.id}] > Request successful`);
request.data.on("data", (data: any) => {
this.stream.push(data);
this.bytesReceived += data.length;
});
request.data.on("end", (data: any) => {
const check = () => {
// If still locked, delay the check
if (this.locked) {
console.debug(
`[${this.id}] > Still locked, delaying end check...`,
);
setTimeout(check, 1000);
return;
}
if (end >= this.contentLength - 1) {
console.debug(
`[${this.id}] > Fetching completed, permanently locking...`,
);
this.locked = true;
//this.timer.destroy();
this.stream.push(null);
this.debugLog();
this.fetchCompleted = true;
//this.destroy();
}
};
check();
});
request.data.once("error", async () => {
this.destroy();
await this.refreshStreamUrl();
this.timer.reset();
this.tick();
});
this.locked = false;
}
}
// If data fetch is completed, check if the buffer is empty, if so, destroy the stream
if (this.fetchCompleted && remainingBufferBytes === 0) {
console.debug(`[${this.id}] > Buffer empty, destroying...`);
this.stream.emit("finished");
this.destroy();
return;
}
return;
}
pause() {
this.timer.pause();
}
resume() {
this.timer.resume();
}
private async refreshStreamUrl() {
console.debug(`[${this.id}] > Refreshing stream URL...`);
let url = await this.refreshStreamUrlFunction();
this.url = url;
console.debug(`[${this.id}] > Stream URL refreshed | ${url}`);
}
private destroy() {
this.debugLog();
console.debug(`[${this.id}] > Stream destroyed`);
if (this.inputReadable) this.inputReadable.destroy();
this.destroyed = true;
}
}

8
src/utils/timer.ts
View File

@@ -1,4 +1,4 @@
type TimerState = "idle" | "running" | "paused" | "finished";
type TimerState = "idle" | "running" | "paused" | "finished" | "destroyed";
export class Timer {
private callback: () => void | Promise<void>;
@@ -72,7 +72,11 @@ export class Timer {
destroy() {
this.clearExistingInterval();
this.callback = () => {};
this.state = "finished";
this.state = "destroyed";
}
isDestroyed(): boolean {
return this.state === "destroyed";
}
getState(): TimerState {