screenshot.mjs
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screenshot.mjs
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	import { loadPackageDefinition, credentials } from '@grpc/grpc-js';
	import { loadSync } from '@grpc/proto-loader';

	let PROTO_PATH = '/opt/android-sdk-linux/emulator/lib/emulator_controller.proto';
	let packageDefinition = loadSync(
	PROTO_PATH,
	{keepCase: true,
	longs: String,
	enums: String,
	defaults: true,
	oneofs: true
	});

	let emu_control = loadPackageDefinition(packageDefinition).android.emulation.control;

	export async function get_screenshot() {
	let target = 'localhost:8888';
	let emu_controller = new emu_control.EmulatorController(target,
	credentials.createInsecure());
	let promise = new Promise((resolve, reject) => {
	emu_controller.getScreenshot({}, function(err, response) {
	if (err === null) {
	resolve (response.image);
	} else {
	reject (err);
	}
	});
	});
	return promise;
	}