Files
av-tools/scripts/copy-ffmpeg-assets.mjs

139 lines
3.7 KiB
JavaScript

import { createHash } from 'node:crypto';
import { cp, mkdir, readFile, rm, writeFile } from 'node:fs/promises';
import { dirname, join, relative } from 'node:path';
import { fileURLToPath } from 'node:url';
const repositoryRoot = join(dirname(fileURLToPath(import.meta.url)), '..');
const expectedVersion = '0.12.10';
const outputRoot = join(
repositoryRoot,
'public',
'vendor',
'ffmpeg',
expectedVersion
);
const packages = [
{
packageName: '@ffmpeg/core',
mode: 'st',
files: ['ffmpeg-core.js', 'ffmpeg-core.wasm'],
},
{
packageName: '@ffmpeg/core-mt',
mode: 'mt',
files: ['ffmpeg-core.js', 'ffmpeg-core.wasm', 'ffmpeg-core.worker.js'],
},
];
const expectedHashes = new Map([
[
'@ffmpeg/core:ffmpeg-core.js',
'67a48f11645f85439f3fde4f2119042c16b374b910206b7a7a24f342e28dcae3',
],
[
'@ffmpeg/core:ffmpeg-core.wasm',
'9f57947a5bd530d8f00c5b3f2cb2a3492faa7e5d823315342d6a8656d0a6b7b7',
],
[
'@ffmpeg/core-mt:ffmpeg-core.js',
'270a2e6ff945e173238610669a3f7132df5f9c52698a9bf708cf5c2ab6bda0de',
],
[
'@ffmpeg/core-mt:ffmpeg-core.wasm',
'be2c97605366b78f3f13e21b52e81a55a79e1f29c133b03a68ec187b1a2ec41a',
],
[
'@ffmpeg/core-mt:ffmpeg-core.worker.js',
'f77898d631dc010b45c29c23cb4379c611a7d7b131bf591d08a656bb729a4ca3',
],
]);
async function loadPackageVersion(packageName) {
const packagePath = join(
repositoryRoot,
'node_modules',
...packageName.split('/'),
'package.json'
);
const parsed = JSON.parse(await readFile(packagePath, 'utf8'));
if (parsed.version !== expectedVersion) {
throw new Error(
`${packageName} ${parsed.version ?? '<unknown>'} is installed; expected exactly ${expectedVersion}`
);
}
}
async function copyAsset(packageName, mode, fileName) {
const source = join(
repositoryRoot,
'node_modules',
...packageName.split('/'),
'dist',
'esm',
fileName
);
const destination = join(outputRoot, mode, fileName);
const sourceBytes = await readFile(source).catch((error) => {
throw new Error(`Required FFmpeg asset is missing: ${source}`, {
cause: error,
});
});
const sourceDigest = createHash('sha256').update(sourceBytes).digest('hex');
const expectedDigest = expectedHashes.get(`${packageName}:${fileName}`);
if (!expectedDigest || sourceDigest !== expectedDigest) {
throw new Error(
`Pinned FFmpeg asset checksum mismatch for ${packageName}/${fileName}`
);
}
await mkdir(dirname(destination), { recursive: true });
await cp(source, destination, {
dereference: true,
errorOnExist: false,
force: true,
preserveTimestamps: false,
});
const destinationBytes = await readFile(destination);
if (!sourceBytes.equals(destinationBytes)) {
throw new Error(`Copied FFmpeg asset differs from its source: ${fileName}`);
}
return {
path: relative(outputRoot, destination).replaceAll('\\', '/'),
bytes: destinationBytes.byteLength,
sha256: sourceDigest,
};
}
await rm(outputRoot, { force: true, recursive: true });
const assets = [];
for (const entry of packages) {
await loadPackageVersion(entry.packageName);
for (const fileName of entry.files) {
assets.push(await copyAsset(entry.packageName, entry.mode, fileName));
}
}
assets.sort((left, right) => left.path.localeCompare(right.path, 'en'));
const versionManifest = {
schemaVersion: 1,
coreVersion: expectedVersion,
packages: {
'@ffmpeg/core': expectedVersion,
'@ffmpeg/core-mt': expectedVersion,
},
assets,
};
await writeFile(
join(outputRoot, 'version.json'),
`${JSON.stringify(versionManifest, null, 2)}\n`
);
console.log(
`Copied ${assets.length} pinned FFmpeg assets to ${relative(repositoryRoot, outputRoot)}`
);