ToLaptop
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ImBenji
@@ -1,5 +1,221 @@
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// Singleton
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import 'dart:async';
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import 'package:bus_infotainment/audio_cache.dart';
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import 'package:bus_infotainment/tfl_datasets.dart';
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import 'package:bus_infotainment/utils/audio%20wrapper.dart';
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import 'package:bus_infotainment/utils/delegates.dart';
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import 'package:flutter/services.dart';
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import 'package:http/http.dart' as http;
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import 'package:just_audio/just_audio.dart';
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class LiveInformation {
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static final LiveInformation _singleton = LiveInformation._internal();
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factory LiveInformation() {
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return _singleton;
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}
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LiveInformation._internal();
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Future<void> LoadDatasets() async {
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{
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// Load the bus sequences
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try {
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http.Response response = await http.get(Uri.parse('https://tfl.gov.uk/bus-sequences.csv'));
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busSequences = BusSequences.fromCSV(response.body);
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print("Loaded bus sequences from TFL");
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} catch (e) {
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String csv = await rootBundle.loadString("assets/datasets/bus-sequences.csv");
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busSequences = BusSequences.fromCSV(csv);
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print("Loaded bus sequences from assets");
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}
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}
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refreshTimer();
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}
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Timer refreshTimer() => Timer.periodic(Duration(seconds: 1), (timer) {
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_handleAnnouncementQueue();
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});
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AudioWrapper audioPlayer = AudioWrapper();
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AnnouncementCache announcementCache = AnnouncementCache();
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List<AnnouncementQueueEntry> announcementQueue = [];
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EventDelegate<AnnouncementQueueEntry> announcementDelegate = EventDelegate();
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String CurrentAnnouncement = "*** NO MESSAGE ***";
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void _handleAnnouncementQueue() async {
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print("Handling announcement queue");
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if (audioPlayer.state != AudioWrapper_State.Playing) {
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if (announcementQueue.isNotEmpty) {
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AnnouncementQueueEntry announcement = announcementQueue.first;
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announcementDelegate.trigger(announcement);
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CurrentAnnouncement = announcement.displayText;
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for (AudioWrapperSource source in announcement.audioSources) {
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Duration? duration = await audioPlayer.play(source);
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if (source == announcement.audioSources.last) {
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announcementQueue.removeAt(0);
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}
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await Future.delayed(duration!);
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await Future.delayed(Duration(milliseconds: 150));
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}
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audioPlayer.stop();
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print("Popped announcement queue");
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}
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}
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}
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void announceRouteVariant(BusRouteVariant routeVariant) async {
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if (routeVariant == null) {
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return;
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}
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String display = "${routeVariant.busRoute.routeNumber} to ${routeVariant.busStops.last.formattedStopName}";
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String audio_route = "R_${routeVariant.busRoute.routeNumber}_001.mp3";
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String audio_destination = routeVariant.busStops.last.getAudioFileName();
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print("Audio file: $audio_route");
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await announcementCache.loadAnnouncements([audio_route, audio_destination]);
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AudioWrapperSource source_route = AudioWrapperByteSource(announcementCache[audio_route]);
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AudioWrapperSource source_destination = AudioWrapperByteSource(announcementCache[audio_destination]);
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queueAnnouncement(AnnouncementQueueEntry(
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displayText: display,
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audioSources: [source_route, AudioWrapperAssetSource("audio/to_destination.wav"), source_destination]
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));
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}
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late BusSequences busSequences;
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BusRouteVariant? _currentRouteVariant;
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void setRouteVariant(BusRouteVariant routeVariant) {
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_currentRouteVariant = routeVariant;
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announceRouteVariant(routeVariant);
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}
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BusRouteVariant? getRouteVariant() {
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return _currentRouteVariant;
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}
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void queueAnnouncement(AnnouncementQueueEntry announcement) {
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announcementQueue.add(announcement);
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}
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List<ManualAnnouncementEntry> manualAnnouncements = [
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ManualAnnouncementEntry(
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shortName: "Driver Change",
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informationText: "Driver Change",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/driverchange.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "No Standing Upr Deck",
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informationText: "No standing on the upper deck",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/nostanding.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Face Covering",
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informationText: "Please wear a face covering!",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/facecovering.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Seats Upstairs",
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informationText: "Seats are available upstairs",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/seatsupstairs.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Bus Terminates Here",
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informationText: "Bus terminates here. Please take your belongings with you",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/busterminateshere.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Bus On Diversion",
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informationText: "Bus on diversion. Please listen for further announcements",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/busondiversion.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Destination Change",
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informationText: "Destination Changed - please listen for further instructions",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/destinationchange.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Wheelchair Space",
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informationText: "Wheelchair space requested",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/wheelchairspace1.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Move Down The Bus",
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informationText: "Please move down the bus",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/movedownthebus.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Next Stop Closed",
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informationText: "The next bus stop is closed",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/nextstopclosed.wav")],
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),
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ManualAnnouncementEntry(
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shortName: "CCTV In Operation",
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informationText: "CCTV is in operation on this bus",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/cctvoperation.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Safe Door Opening",
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informationText: "Driver will open the doors when it is safe to do so",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/safedooropening.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Buggy Safety",
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informationText: "For your child's safety, please remain with your buggy",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/buggysafety.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Wheelchair Space 2",
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informationText: "Wheelchair priority space required",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/wheelchairspace2.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Service Regulation",
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informationText: "Regulating service - please listen for further information",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/serviceregulation.mp3")],
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),
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ManualAnnouncementEntry(
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shortName: "Bus Ready To Depart",
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informationText: "This bus is ready to depart",
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audioSources: [AudioWrapperAssetSource("audio/manual_announcements/readytodepart.mp3")],
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),
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];
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}
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class AnnouncementQueueEntry {
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final String displayText;
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final List<AudioWrapperSource> audioSources;
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AnnouncementQueueEntry({required this.displayText, required this.audioSources});
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}
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class ManualAnnouncementEntry extends AnnouncementQueueEntry {
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final String shortName;
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ManualAnnouncementEntry({required this.shortName, required String informationText, required List<AudioWrapperSource> audioSources}) : super(displayText: informationText, audioSources: audioSources);
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}
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