355 lines
12 KiB
Dart
355 lines
12 KiB
Dart
|
import 'dart:async';
|
||
|
import 'dart:html' as html;
|
||
|
import 'dart:js' as js;
|
||
|
import 'package:audio_service/js/media_metadata.dart';
|
||
|
|
||
|
import 'js/media_session_web.dart';
|
||
|
|
||
|
import 'package:audio_service/audio_service.dart';
|
||
|
import 'package:flutter/services.dart';
|
||
|
import 'package:flutter_web_plugins/flutter_web_plugins.dart';
|
||
|
|
||
|
const String _CUSTOM_PREFIX = 'custom_';
|
||
|
|
||
|
class Art {
|
||
|
String src;
|
||
|
String type;
|
||
|
String sizes;
|
||
|
Art({this.src, this.type, this.sizes});
|
||
|
}
|
||
|
|
||
|
class AudioServicePlugin {
|
||
|
int fastForwardInterval;
|
||
|
int rewindInterval;
|
||
|
Map params;
|
||
|
bool started = false;
|
||
|
ClientHandler clientHandler;
|
||
|
BackgroundHandler backgroundHandler;
|
||
|
|
||
|
static void registerWith(Registrar registrar) {
|
||
|
AudioServicePlugin(registrar);
|
||
|
}
|
||
|
|
||
|
AudioServicePlugin(Registrar registrar) {
|
||
|
clientHandler = ClientHandler(this, registrar);
|
||
|
backgroundHandler = BackgroundHandler(this, registrar);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
class ClientHandler {
|
||
|
final AudioServicePlugin plugin;
|
||
|
final MethodChannel channel;
|
||
|
|
||
|
ClientHandler(this.plugin, Registrar registrar)
|
||
|
: channel = MethodChannel(
|
||
|
'ryanheise.com/audioService',
|
||
|
const StandardMethodCodec(),
|
||
|
registrar.messenger,
|
||
|
) {
|
||
|
channel.setMethodCallHandler(handleServiceMethodCall);
|
||
|
}
|
||
|
|
||
|
Future<T> invokeMethod<T>(String method, [dynamic arguments]) =>
|
||
|
channel.invokeMethod(method, arguments);
|
||
|
|
||
|
Future<dynamic> handleServiceMethodCall(MethodCall call) async {
|
||
|
switch (call.method) {
|
||
|
case 'start':
|
||
|
plugin.fastForwardInterval = call.arguments['fastForwardInterval'];
|
||
|
plugin.rewindInterval = call.arguments['rewindInterval'];
|
||
|
plugin.params = call.arguments['params'];
|
||
|
plugin.started = true;
|
||
|
return plugin.started;
|
||
|
case 'connect':
|
||
|
// No-op not really anything for us to do with connect on the web, the
|
||
|
// streams should all be hydrated
|
||
|
break;
|
||
|
case 'disconnect':
|
||
|
// No-op not really anything for us to do with disconnect on the web,
|
||
|
// the streams should stay hydrated because everything is static and we
|
||
|
// aren't working with isolates
|
||
|
break;
|
||
|
case 'isRunning':
|
||
|
return plugin.started;
|
||
|
case 'rewind':
|
||
|
return plugin.backgroundHandler.invokeMethod('onRewind');
|
||
|
case 'fastForward':
|
||
|
return plugin.backgroundHandler.invokeMethod('onFastForward');
|
||
|
case 'skipToPrevious':
|
||
|
return plugin.backgroundHandler.invokeMethod('onSkipToPrevious');
|
||
|
case 'skipToNext':
|
||
|
return plugin.backgroundHandler.invokeMethod('onSkipToNext');
|
||
|
case 'play':
|
||
|
return plugin.backgroundHandler.invokeMethod('onPlay');
|
||
|
case 'pause':
|
||
|
return plugin.backgroundHandler.invokeMethod('onPause');
|
||
|
case 'stop':
|
||
|
return plugin.backgroundHandler.invokeMethod('onStop');
|
||
|
case 'seekTo':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onSeekTo', [call.arguments]);
|
||
|
case 'prepareFromMediaId':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onPrepareFromMediaId', [call.arguments]);
|
||
|
case 'playFromMediaId':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onPlayFromMediaId', [call.arguments]);
|
||
|
case 'setBrowseMediaParent':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onLoadChildren', [call.arguments]);
|
||
|
case 'onClick':
|
||
|
// No-op we don't really have the idea of a bluetooth button click on
|
||
|
// the web
|
||
|
break;
|
||
|
case 'addQueueItem':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onAddQueueItem', [call.arguments]);
|
||
|
case 'addQueueItemAt':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onQueueItemAt', call.arguments);
|
||
|
case 'removeQueueItem':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onRemoveQueueItem', [call.arguments]);
|
||
|
case 'updateQueue':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onUpdateQueue', [call.arguments]);
|
||
|
case 'updateMediaItem':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onUpdateMediaItem', [call.arguments]);
|
||
|
case 'prepare':
|
||
|
return plugin.backgroundHandler.invokeMethod('onPrepare');
|
||
|
case 'playMediaItem':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onPlayMediaItem', [call.arguments]);
|
||
|
case 'skipToQueueItem':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onSkipToMediaItem', [call.arguments]);
|
||
|
case 'setRepeatMode':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onSetRepeatMode', [call.arguments]);
|
||
|
case 'setShuffleMode':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onSetShuffleMode', [call.arguments]);
|
||
|
case 'setRating':
|
||
|
return plugin.backgroundHandler.invokeMethod('onSetRating',
|
||
|
[call.arguments['rating'], call.arguments['extras']]);
|
||
|
case 'setSpeed':
|
||
|
return plugin.backgroundHandler
|
||
|
.invokeMethod('onSetSpeed', [call.arguments]);
|
||
|
default:
|
||
|
if (call.method.startsWith(_CUSTOM_PREFIX)) {
|
||
|
final result = await plugin.backgroundHandler
|
||
|
.invokeMethod(call.method, call.arguments);
|
||
|
return result;
|
||
|
}
|
||
|
throw PlatformException(
|
||
|
code: 'Unimplemented',
|
||
|
details: "The audio Service plugin for web doesn't implement "
|
||
|
"the method '${call.method}'");
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
class BackgroundHandler {
|
||
|
final AudioServicePlugin plugin;
|
||
|
final MethodChannel channel;
|
||
|
MediaItem mediaItem;
|
||
|
|
||
|
BackgroundHandler(this.plugin, Registrar registrar)
|
||
|
: channel = MethodChannel(
|
||
|
'ryanheise.com/audioServiceBackground',
|
||
|
const StandardMethodCodec(),
|
||
|
registrar.messenger,
|
||
|
) {
|
||
|
channel.setMethodCallHandler(handleBackgroundMethodCall);
|
||
|
}
|
||
|
|
||
|
Future<T> invokeMethod<T>(String method, [dynamic arguments]) =>
|
||
|
channel.invokeMethod(method, arguments);
|
||
|
|
||
|
Future<dynamic> handleBackgroundMethodCall(MethodCall call) async {
|
||
|
switch (call.method) {
|
||
|
case 'started':
|
||
|
return started(call);
|
||
|
case 'ready':
|
||
|
return ready(call);
|
||
|
case 'stopped':
|
||
|
return stopped(call);
|
||
|
case 'setState':
|
||
|
return setState(call);
|
||
|
case 'setMediaItem':
|
||
|
return setMediaItem(call);
|
||
|
case 'setQueue':
|
||
|
return setQueue(call);
|
||
|
case 'androidForceEnableMediaButtons':
|
||
|
//no-op
|
||
|
break;
|
||
|
default:
|
||
|
throw PlatformException(
|
||
|
code: 'Unimplemented',
|
||
|
details:
|
||
|
"The audio service background plugin for web doesn't implement "
|
||
|
"the method '${call.method}'");
|
||
|
}
|
||
|
}
|
||
|
|
||
|
Future<bool> started(MethodCall call) async => true;
|
||
|
|
||
|
Future<dynamic> ready(MethodCall call) async => {
|
||
|
'fastForwardInterval': plugin.fastForwardInterval ?? 30000,
|
||
|
'rewindInterval': plugin.rewindInterval ?? 30000,
|
||
|
'params': plugin.params
|
||
|
};
|
||
|
|
||
|
Future<void> stopped(MethodCall call) async {
|
||
|
final session = html.window.navigator.mediaSession;
|
||
|
session.metadata = null;
|
||
|
plugin.started = false;
|
||
|
mediaItem = null;
|
||
|
plugin.clientHandler.invokeMethod('onStopped');
|
||
|
}
|
||
|
|
||
|
Future<void> setState(MethodCall call) async {
|
||
|
final session = html.window.navigator.mediaSession;
|
||
|
final List args = call.arguments;
|
||
|
final List<MediaControl> controls = call.arguments[0]
|
||
|
.map<MediaControl>((element) => MediaControl(
|
||
|
action: MediaAction.values[element['action']],
|
||
|
androidIcon: element['androidIcon'],
|
||
|
label: element['label']))
|
||
|
.toList();
|
||
|
|
||
|
// Reset the handlers
|
||
|
// TODO: Make this better... Like only change ones that have been changed
|
||
|
try {
|
||
|
session.setActionHandler('play', null);
|
||
|
session.setActionHandler('pause', null);
|
||
|
session.setActionHandler('previoustrack', null);
|
||
|
session.setActionHandler('nexttrack', null);
|
||
|
session.setActionHandler('seekbackward', null);
|
||
|
session.setActionHandler('seekforward', null);
|
||
|
session.setActionHandler('stop', null);
|
||
|
} catch (e) {}
|
||
|
|
||
|
int actionBits = 0;
|
||
|
for (final control in controls) {
|
||
|
try {
|
||
|
switch (control.action) {
|
||
|
case MediaAction.play:
|
||
|
session.setActionHandler('play', AudioService.play);
|
||
|
break;
|
||
|
case MediaAction.pause:
|
||
|
session.setActionHandler('pause', AudioService.pause);
|
||
|
break;
|
||
|
case MediaAction.skipToPrevious:
|
||
|
session.setActionHandler(
|
||
|
'previoustrack', AudioService.skipToPrevious);
|
||
|
break;
|
||
|
case MediaAction.skipToNext:
|
||
|
session.setActionHandler('nexttrack', AudioService.skipToNext);
|
||
|
break;
|
||
|
// The naming convention here is a bit odd but seekbackward seems more
|
||
|
// analagous to rewind than seekBackward
|
||
|
case MediaAction.rewind:
|
||
|
session.setActionHandler('seekbackward', AudioService.rewind);
|
||
|
break;
|
||
|
case MediaAction.fastForward:
|
||
|
session.setActionHandler('seekforward', AudioService.fastForward);
|
||
|
break;
|
||
|
case MediaAction.stop:
|
||
|
session.setActionHandler('stop', AudioService.stop);
|
||
|
break;
|
||
|
default:
|
||
|
// no-op
|
||
|
break;
|
||
|
}
|
||
|
} catch (e) {}
|
||
|
int actionCode = 1 << control.action.index;
|
||
|
actionBits |= actionCode;
|
||
|
}
|
||
|
|
||
|
for (int rawSystemAction in call.arguments[1]) {
|
||
|
MediaAction action = MediaAction.values[rawSystemAction];
|
||
|
|
||
|
switch (action) {
|
||
|
case MediaAction.seekTo:
|
||
|
try {
|
||
|
setActionHandler('seekto', js.allowInterop((ActionResult ev) {
|
||
|
print(ev.action);
|
||
|
print(ev.seekTime);
|
||
|
// Chrome uses seconds for whatever reason
|
||
|
AudioService.seekTo(Duration(
|
||
|
milliseconds: (ev.seekTime * 1000).round(),
|
||
|
));
|
||
|
}));
|
||
|
} catch (e) {}
|
||
|
break;
|
||
|
default:
|
||
|
// no-op
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
int actionCode = 1 << rawSystemAction;
|
||
|
actionBits |= actionCode;
|
||
|
}
|
||
|
|
||
|
try {
|
||
|
// Dart also doesn't expose setPositionState
|
||
|
if (mediaItem != null) {
|
||
|
print(
|
||
|
'Setting positionState Duration(${mediaItem.duration.inSeconds}), PlaybackRate(${args[6] ?? 1.0}), Position(${Duration(milliseconds: args[4]).inSeconds})');
|
||
|
|
||
|
// Chrome looks for seconds for some reason
|
||
|
setPositionState(PositionState(
|
||
|
duration: (mediaItem.duration?.inMilliseconds ?? 0) / 1000,
|
||
|
playbackRate: args[6] ?? 1.0,
|
||
|
position: (args[4] ?? 0) / 1000,
|
||
|
));
|
||
|
}
|
||
|
} catch (e) {
|
||
|
print(e);
|
||
|
}
|
||
|
|
||
|
plugin.clientHandler.invokeMethod('onPlaybackStateChanged', [
|
||
|
args[2], // Processing state
|
||
|
args[3], // Playing
|
||
|
actionBits, // Action bits
|
||
|
args[4], // Position
|
||
|
args[5], // bufferedPosition
|
||
|
args[6] ?? 1.0, // speed
|
||
|
args[7] ?? DateTime.now().millisecondsSinceEpoch, // updateTime
|
||
|
args[9], // repeatMode
|
||
|
args[10], // shuffleMode
|
||
|
]);
|
||
|
}
|
||
|
|
||
|
Future<void> setMediaItem(MethodCall call) async {
|
||
|
mediaItem = MediaItem.fromJson(call.arguments);
|
||
|
// This would be how we could pull images out of the cache... But nothing is actually cached on web
|
||
|
final artUri = /* mediaItem.extras['artCacheFile'] ?? */
|
||
|
mediaItem.artUri;
|
||
|
|
||
|
try {
|
||
|
metadata = MediaMetadata(MetadataLiteral(
|
||
|
album: mediaItem.album,
|
||
|
title: mediaItem.title,
|
||
|
artist: mediaItem.artist,
|
||
|
artwork: [
|
||
|
MetadataArtwork(
|
||
|
src: artUri,
|
||
|
sizes: '512x512',
|
||
|
)
|
||
|
],
|
||
|
));
|
||
|
} catch (e) {
|
||
|
print('Metadata failed $e');
|
||
|
}
|
||
|
|
||
|
plugin.clientHandler.invokeMethod('onMediaChanged', [mediaItem.toJson()]);
|
||
|
}
|
||
|
|
||
|
Future<void> setQueue(MethodCall call) async {
|
||
|
plugin.clientHandler.invokeMethod('onQueueChanged', [call.arguments]);
|
||
|
}
|
||
|
}
|