feat: Initial clean release of CHM

packages/app-desktop/gui/NoteEditor/NoteBody/TinyMCE/utils/createVideoPoster.ts

@@ -0,0 +1,26 @@
+import { execFile } from 'child_process';
+import { mkdtemp, readFile, rm } from 'fs/promises';
+import { tmpdir } from 'os';
+import { basename, join } from 'path';
+import { promisify } from 'util';
+
+const execFileAsync = promisify(execFile);
+
+export default async function createVideoPoster(videoPath: string): Promise<string|null> {
+	if (process.platform !== 'darwin') return null;
+
+	const outputDirectory = await mkdtemp(join(tmpdir(), 'joplin-video-thumbnail-'));
+	try {
+		await execFileAsync('/usr/bin/qlmanage', ['-t', '-s', '920', '-o', outputDirectory, videoPath], {
+			timeout: 15_000,
+			maxBuffer: 1024 * 1024,
+		});
+
+		const thumbnail = await readFile(join(outputDirectory, `${basename(videoPath)}.png`));
+		return `data:image/png;base64,${thumbnail.toString('base64')}`;
+	} catch {
+		return null;
+	} finally {
+		await rm(outputDirectory, { force: true, recursive: true });
+	}
+}