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- /*****************************************************************************
- * VLCWatchCommunication.m
- * VLC for iOS
- *****************************************************************************
- * Copyright (c) 2015 VideoLAN. All rights reserved.
- * $Id$
- *
- * Author: Tobias Conradi <videolan # tobias-conradi.de>
- *
- * Refer to the COPYING file of the official project for license.
- *****************************************************************************/
- #import "VLCWatchCommunication.h"
- #import "VLCWatchMessage.h"
- #import "VLCPlaybackController+MediaLibrary.h"
- #import <MediaPlayer/MediaPlayer.h>
- #import <MediaLibraryKit/UIImage+MLKit.h>
- #import <WatchKit/WatchKit.h>
- #import "VLCThumbnailsCache.h"
- @interface VLCWatchCommunication()
- @property (nonatomic, strong) NSOperationQueue *thumbnailingQueue;
- @end
- @implementation VLCWatchCommunication
- + (BOOL)isSupported {
- return [WCSession class] != nil && [WCSession isSupported];
- }
- - (instancetype)init
- {
- self = [super init];
- if (self) {
- if ([VLCWatchCommunication isSupported]) {
- WCSession *session = [WCSession defaultSession];
- session.delegate = self;
- [session activateSession];
- _thumbnailingQueue = [NSOperationQueue new];
- _thumbnailingQueue.name = @"org.videolan.vlc.watch-thumbnailing";
- }
- }
- return self;
- }
- - (void)dealloc {
- [[NSNotificationCenter defaultCenter] removeObserver:self name:nil object:nil];
- }
- static VLCWatchCommunication *_singeltonInstance = nil;
- + (VLCWatchCommunication *)sharedInstance
- {
- @synchronized(self) {
- static dispatch_once_t pred;
- dispatch_once(&pred, ^{
- _singeltonInstance = [[self alloc] init];
- });
- }
- return _singeltonInstance;
- }
- - (void)playFileFromWatch:(VLCWatchMessage *)message
- {
- NSManagedObject *managedObject = nil;
- NSString *uriString = (id)message.payload;
- if ([uriString isKindOfClass:[NSString class]]) {
- NSURL *uriRepresentation = [NSURL URLWithString:uriString];
- managedObject = [[MLMediaLibrary sharedMediaLibrary] objectForURIRepresentation:uriRepresentation];
- }
- if (managedObject == nil) {
- APLog(@"%s file not found: %@",__PRETTY_FUNCTION__,message);
- return;
- }
- VLCPlaybackController *vpc = [VLCPlaybackController sharedInstance];
- [vpc playMediaLibraryObject:managedObject];
- }
- #pragma mark - WCSessionDelegate
- - (NSDictionary *)handleMessage:(nonnull VLCWatchMessage *)message {
- UIApplication *application = [UIApplication sharedApplication];
- /* dispatch background task */
- __block UIBackgroundTaskIdentifier taskIdentifier = [application beginBackgroundTaskWithName:nil
- expirationHandler:^{
- [application endBackgroundTask:taskIdentifier];
- taskIdentifier = UIBackgroundTaskInvalid;
- }];
- NSString *name = message.name;
- NSDictionary *responseDict = @{};
- if ([name isEqualToString:VLCWatchMessageNameGetNowPlayingInfo]) {
- responseDict = [self nowPlayingResponseDict];
- } else if ([name isEqualToString:VLCWatchMessageNamePlayPause]) {
- [[VLCPlaybackController sharedInstance] playPause];
- responseDict = @{@"playing": @([VLCPlaybackController sharedInstance].isPlaying)};
- } else if ([name isEqualToString:VLCWatchMessageNameSkipForward]) {
- [[VLCPlaybackController sharedInstance] forward];
- } else if ([name isEqualToString:VLCWatchMessageNameSkipBackward]) {
- [[VLCPlaybackController sharedInstance] backward];
- } else if ([name isEqualToString:VLCWatchMessageNamePlayFile]) {
- [self playFileFromWatch:message];
- } else if ([name isEqualToString:VLCWatchMessageNameSetVolume]) {
- [self setVolumeFromWatch:message];
- } else if ([name isEqualToString:VLCWatchMessageNameRequestThumbnail]) {
- [self requestThumnail:message];
- } else if([name isEqualToString:VLCWatchMessageNameRequestDB]) {
- [self copyCoreDataToWatch];
- } else {
- APLog(@"Did not handle request from WatchKit Extension: %@",message);
- }
- return responseDict;
- }
- - (void)session:(nonnull WCSession *)session didReceiveMessage:(nonnull NSDictionary<NSString *,id> *)userInfo replyHandler:(nonnull void (^)(NSDictionary<NSString *,id> * _Nonnull))replyHandler {
- VLCWatchMessage *message = [[VLCWatchMessage alloc] initWithDictionary:userInfo];
- NSDictionary *responseDict = [self handleMessage:message];
- replyHandler(responseDict);
- }
- - (void)session:(nonnull WCSession *)session didReceiveMessage:(nonnull NSDictionary<NSString *,id> *)messageDict {
- VLCWatchMessage *message = [[VLCWatchMessage alloc] initWithDictionary:messageDict];
- [self handleMessage:message];
- }
- - (void)sessionWatchStateDidChange:(WCSession *)session {
- NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
- [center removeObserver:self name:NSManagedObjectContextDidSaveNotification object:nil];
- [center removeObserver:self name:MLFileThumbnailWasUpdated object:nil];
- if ([[WCSession defaultSession] isPaired] && [[WCSession defaultSession] isWatchAppInstalled]) {
- [center addObserver:self selector:@selector(savedManagedObjectContextNotification:) name:NSManagedObjectContextDidSaveNotification object:nil];
- [center addObserver:self selector:@selector(didUpdateThumbnail:) name:MLFileThumbnailWasUpdated object:nil];
- }
- }
- #pragma mark -
- - (void)setVolumeFromWatch:(VLCWatchMessage *)message
- {
- NSNumber *volume = (id)message.payload;
- if ([volume isKindOfClass:[NSNumber class]]) {
- /*
- * Since WatchKit doesn't provide something like MPVolumeView we use deprecated API.
- * rdar://20783803 Feature Request: WatchKit equivalent for MPVolumeView
- */
- [MPMusicPlayerController applicationMusicPlayer].volume = volume.floatValue;
- }
- }
- - (NSDictionary *)nowPlayingResponseDict {
- NSMutableDictionary *response = [NSMutableDictionary new];
- NSMutableDictionary *nowPlayingInfo = [[MPNowPlayingInfoCenter defaultCenter].nowPlayingInfo mutableCopy];
- NSNumber *playbackTime = [VLCPlaybackController sharedInstance].mediaPlayer.time.numberValue;
- if (playbackTime) {
- nowPlayingInfo[MPNowPlayingInfoPropertyElapsedPlaybackTime] = @(playbackTime.floatValue/1000);
- }
- if (nowPlayingInfo) {
- response[@"nowPlayingInfo"] = nowPlayingInfo;
- }
- MLFile *currentFile = [VLCPlaybackController sharedInstance].currentlyPlayingMediaFile;
- NSString *URIString = currentFile.objectID.URIRepresentation.absoluteString;
- if (URIString) {
- response[VLCWatchMessageKeyURIRepresentation] = URIString;
- }
- response[@"volume"] = @([MPMusicPlayerController applicationMusicPlayer].volume);
- return response;
- }
- - (void)requestThumnail:(VLCWatchMessage *)message {
- NSString *uriString = message.payload[VLCWatchMessageKeyURIRepresentation];
- NSURL *url = [NSURL URLWithString:uriString];
- NSManagedObject *object = [[MLMediaLibrary sharedMediaLibrary] objectForURIRepresentation:url];
- if (object) {
- [self transferThumbnailForObject:object refreshCache:NO];
- }
- }
- #pragma mark - Notifications
- - (void)startRelayingNotificationName:(nullable NSString *)name object:(nullable id)object {
- [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(relayNotification:) name:name object:object];
- }
- - (void)stopRelayingNotificationName:(nullable NSString *)name object:(nullable id)object {
- [[NSNotificationCenter defaultCenter] removeObserver:self name:name object:object];
- }
- - (void)relayNotification:(NSNotification *)notification {
- NSMutableDictionary *payload = [NSMutableDictionary dictionary];
- payload[@"name"] = notification.name;
- if (notification.userInfo) {
- payload[@"userInfo"] = notification.userInfo;
- }
- NSDictionary *dict = [VLCWatchMessage messageDictionaryForName:VLCWatchMessageNameNotification
- payload:payload];
- if ([WCSession isSupported] && [[WCSession defaultSession] isWatchAppInstalled] && [[WCSession defaultSession] isReachable]) {
- [[WCSession defaultSession] sendMessage:dict replyHandler:nil errorHandler:nil];
- }
- }
- #pragma mark - Copy CoreData to Watch
- - (void)savedManagedObjectContextNotification:(NSNotification *)notification {
- NSManagedObjectContext *moc = notification.object;
- if (moc.persistentStoreCoordinator == [[MLMediaLibrary sharedMediaLibrary] persistentStoreCoordinator]) {
- [self copyCoreDataToWatch];
- }
- }
- - (void)copyCoreDataToWatch {
- if (![[WCSession defaultSession] isPaired] || ![[WCSession defaultSession] isWatchAppInstalled]) return;
- MLMediaLibrary *library = [MLMediaLibrary sharedMediaLibrary];
- NSPersistentStoreCoordinator *libraryPSC = [library persistentStoreCoordinator];
- NSPersistentStore *persistentStore = [libraryPSC persistentStoreForURL:[library persistentStoreURL]];
- NSURL *tmpDirectoryURL = [[WCSession defaultSession] watchDirectoryURL];
- NSURL *tmpURL = [tmpDirectoryURL URLByAppendingPathComponent:persistentStore.URL.lastPathComponent];
- NSMutableDictionary *destOptions = [persistentStore.options mutableCopy] ?: [NSMutableDictionary new];
- destOptions[NSSQLitePragmasOption] = @{@"journal_mode": @"DELETE"};
- NSError *error;
- bool success = [libraryPSC replacePersistentStoreAtURL:tmpURL destinationOptions:destOptions withPersistentStoreFromURL:persistentStore.URL sourceOptions:persistentStore.options storeType:NSSQLiteStoreType error:&error];
- if (!success) {
- NSLog(@"%s failed to copy persistent store to tmp location for copy to watch with error %@",__PRETTY_FUNCTION__,error);
- }
- // cancel old transfers
- NSArray<WCSessionFileTransfer *> *outstandingtransfers = [[WCSession defaultSession] outstandingFileTransfers];
- [outstandingtransfers enumerateObjectsUsingBlock:^(WCSessionFileTransfer * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
- if ([obj.file.metadata[@"filetype"] isEqualToString:@"coredata"]) {
- [obj cancel];
- }
- }];
- NSDictionary *metadata = @{@"filetype":@"coredata"};
- [[WCSession defaultSession] transferFile:tmpURL metadata:metadata];
- }
- - (void)transferThumbnailForObject:(NSManagedObject *__nonnull)object refreshCache:(BOOL)refresh{
- if (![[WCSession defaultSession] isPaired] || ![[WCSession defaultSession] isWatchAppInstalled]) {
- return;
- }
- CGRect bounds = [WKInterfaceDevice currentDevice].screenBounds;
- CGFloat scale = [WKInterfaceDevice currentDevice].screenScale;
- [self.thumbnailingQueue addOperationWithBlock:^{
- UIImage *scaledImage = [VLCThumbnailsCache thumbnailForManagedObject:object refreshCache:refresh toFitRect:bounds scale:scale shouldReplaceCache:NO];
- [self transferImage:scaledImage forObjectID:object.objectID];
- }];
- }
- - (void)didUpdateThumbnail:(NSNotification *)notification {
- NSManagedObject *object = notification.object;
- if(![object isKindOfClass:[NSManagedObject class]])
- return;
- [self transferThumbnailForObject:object refreshCache:YES];
- }
- - (void)transferImage:(UIImage *)image forObjectID:(NSManagedObjectID *)objectID {
- if (!image || ![[WCSession defaultSession] isPaired] || ![[WCSession defaultSession] isWatchAppInstalled]) {
- return;
- }
- NSString *imageName = [[NSUUID UUID] UUIDString];
- NSURL *tmpDirectoryURL = [[WCSession defaultSession] watchDirectoryURL];
- NSURL *tmpURL = [tmpDirectoryURL URLByAppendingPathComponent:imageName];
- NSData *data = UIImageJPEGRepresentation(image, 0.7);
- [data writeToURL:tmpURL atomically:YES];
- NSDictionary *metaData = @{@"filetype" : @"thumbnail",
- VLCWatchMessageKeyURIRepresentation : objectID.URIRepresentation.absoluteString};
- NSArray<WCSessionFileTransfer *> *outstandingtransfers = [[WCSession defaultSession] outstandingFileTransfers];
- [outstandingtransfers enumerateObjectsUsingBlock:^(WCSessionFileTransfer * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
- if ([obj.file.metadata isEqualToDictionary:metaData])
- [obj cancel];
- }];
- [[WCSession defaultSession] transferFile:tmpURL metadata:metaData];
- }
- @end
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