365 lines
9.8 KiB
Objective-C
365 lines
9.8 KiB
Objective-C
#import "PluginController.h"
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#import "Plugin.h"
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#import "CogPluginMulti.h"
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#import "Logging.h"
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@implementation PluginController
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@synthesize sources;
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@synthesize containers;
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@synthesize metadataReaders;
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@synthesize propertiesReadersByExtension;
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@synthesize propertiesReadersByMimeType;
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@synthesize decodersByExtension;
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@synthesize decodersByMimeType;
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@synthesize configured;
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static PluginController *sharedPluginController = nil;
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+ (id<CogPluginController>)sharedPluginController
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{
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@synchronized(self) {
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if (sharedPluginController == nil) {
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sharedPluginController = [[self alloc] init];
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}
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}
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return sharedPluginController;
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}
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- (id)init {
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self = [super init];
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if (self) {
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self.sources = [[NSMutableDictionary alloc] init];
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self.containers = [[NSMutableDictionary alloc] init];
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self.metadataReaders = [[NSMutableDictionary alloc] init];
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self.propertiesReadersByExtension = [[NSMutableDictionary alloc] init];
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self.propertiesReadersByMimeType = [[NSMutableDictionary alloc] init];
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self.decodersByExtension = [[NSMutableDictionary alloc] init];
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self.decodersByMimeType = [[NSMutableDictionary alloc] init];
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[self setup];
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}
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return self;
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}
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- (void)setup
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{
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if (self.configured == NO) {
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self.configured = YES;
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(bundleDidLoad:) name:NSBundleDidLoadNotification object:nil];
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[self loadPlugins];
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[self printPluginInfo];
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}
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}
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- (void)bundleDidLoad:(NSNotification *)notification
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{
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NSArray *classNames = [[notification userInfo] objectForKey:@"NSLoadedClasses"];
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for (NSString *className in classNames)
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{
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DLog(@"Class loaded: %@", className);
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Class bundleClass = NSClassFromString(className);
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if ([bundleClass conformsToProtocol:@protocol(CogContainer)]) {
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[self setupContainer:className];
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}
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if ([bundleClass conformsToProtocol:@protocol(CogDecoder)]) {
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[self setupDecoder:className];
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}
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if ([bundleClass conformsToProtocol:@protocol(CogMetadataReader)]) {
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[self setupMetadataReader:className];
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}
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if ([bundleClass conformsToProtocol:@protocol(CogPropertiesReader)]) {
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[self setupPropertiesReader:className];
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}
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if ([bundleClass conformsToProtocol:@protocol(CogSource)]) {
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[self setupSource:className];
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}
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}
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}
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- (void)loadPluginsAtPath:(NSString *)path
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{
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NSArray *dirContents = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:path error:nil];
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for (NSString *pname in dirContents)
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{
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NSString *ppath;
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ppath = [NSString pathWithComponents:[NSArray arrayWithObjects:path,pname,nil]];
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if ([[pname pathExtension] isEqualToString:@"bundle"])
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{
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NSBundle *b = [NSBundle bundleWithPath:ppath];
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[b load];
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}
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}
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}
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- (void)loadPlugins
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{
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[self loadPluginsAtPath:[[NSBundle mainBundle] builtInPlugInsPath]];
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[self loadPluginsAtPath:[@"~/Library/Application Support/Cog/Plugins" stringByExpandingTildeInPath]];
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}
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- (void)setupContainer:(NSString *)className
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{
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Class container = NSClassFromString(className);
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if (container && [container respondsToSelector:@selector(fileTypes)]) {
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for (id fileType in [container fileTypes])
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{
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NSString *ext = [fileType lowercaseString];
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NSMutableArray *containerSet;
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if (![containers objectForKey:ext])
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{
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containerSet = [[NSMutableArray alloc] init];
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[containers setObject:containerSet forKey:ext];
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}
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else
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containerSet = [containers objectForKey:ext];
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[containerSet addObject:className];
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}
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}
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}
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- (void)setupDecoder:(NSString *)className
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{
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Class decoder = NSClassFromString(className);
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if (decoder && [decoder respondsToSelector:@selector(fileTypes)]) {
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for (id fileType in [decoder fileTypes])
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{
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NSString *ext = [fileType lowercaseString];
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NSMutableArray *decoders;
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if (![decodersByExtension objectForKey:ext])
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{
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decoders = [[NSMutableArray alloc] init];
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[decodersByExtension setObject:decoders forKey:ext];
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}
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else
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decoders = [decodersByExtension objectForKey:ext];
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[decoders addObject:className];
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}
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}
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if (decoder && [decoder respondsToSelector:@selector(mimeTypes)]) {
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for (id mimeType in [decoder mimeTypes])
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{
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[decodersByMimeType setObject:className forKey:[mimeType lowercaseString]];
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}
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}
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}
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- (void)setupMetadataReader:(NSString *)className
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{
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Class metadataReader = NSClassFromString(className);
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if (metadataReader && [metadataReader respondsToSelector:@selector(fileTypes)]) {
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for (id fileType in [metadataReader fileTypes])
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{
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NSString *ext = [fileType lowercaseString];
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NSMutableArray *readers;
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if (![metadataReaders objectForKey:ext])
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{
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readers = [[NSMutableArray alloc] init];
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[metadataReaders setObject:readers forKey:ext];
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}
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else
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readers = [metadataReaders objectForKey:ext];
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[readers addObject:className];
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}
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}
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}
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- (void)setupPropertiesReader:(NSString *)className
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{
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Class propertiesReader = NSClassFromString(className);
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if (propertiesReader && [propertiesReader respondsToSelector:@selector(fileTypes)]) {
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for (id fileType in [propertiesReader fileTypes])
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{
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NSString *ext = [fileType lowercaseString];
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NSMutableArray *readers;
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if (![propertiesReadersByExtension objectForKey:ext])
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{
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readers = [[NSMutableArray alloc] init];
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[propertiesReadersByExtension setObject:readers forKey:ext];
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}
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else
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readers = [propertiesReadersByExtension objectForKey:ext];
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[readers addObject:className];
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}
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}
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if (propertiesReader && [propertiesReader respondsToSelector:@selector(mimeTypes)]) {
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for (id mimeType in [propertiesReader mimeTypes])
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{
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[propertiesReadersByMimeType setObject:className forKey:[mimeType lowercaseString]];
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}
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}
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}
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- (void)setupSource:(NSString *)className
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{
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Class source = NSClassFromString(className);
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if (source && [source respondsToSelector:@selector(schemes)]) {
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for (id scheme in [source schemes])
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{
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[sources setObject:className forKey:scheme];
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}
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}
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}
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- (void)printPluginInfo
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{
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ALog(@"Sources: %@", self.sources);
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ALog(@"Containers: %@", self.containers);
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ALog(@"Metadata Readers: %@", self.metadataReaders);
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ALog(@"Properties Readers By Extension: %@", self.propertiesReadersByExtension);
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ALog(@"Properties Readers By Mime Type: %@", self.propertiesReadersByMimeType);
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ALog(@"Decoders by Extension: %@", self.decodersByExtension);
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ALog(@"Decoders by Mime Type: %@", self.decodersByMimeType);
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}
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- (id<CogSource>) audioSourceForURL:(NSURL *)url
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{
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NSString *scheme = [url scheme];
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Class source = NSClassFromString([sources objectForKey:scheme]);
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return [[source alloc] init];
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}
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- (NSArray *) urlsForContainerURL:(NSURL *)url
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{
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NSString *ext = [[url path] pathExtension];
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NSArray *containerSet = [containers objectForKey:[ext lowercaseString]];
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NSString *classString;
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if (containerSet) {
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if ( [containerSet count] > 1 ) {
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return [CogContainerMulti urlsForContainerURL:url containers:containerSet];
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}
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else {
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classString = [containerSet objectAtIndex:0];
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}
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}
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else {
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return nil;
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}
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Class container = NSClassFromString(classString);
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return [container urlsForContainerURL:url];
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}
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//Note: Source is assumed to already be opened.
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- (id<CogDecoder>) audioDecoderForSource:(id <CogSource>)source
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{
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NSString *ext = [[[source url] path] pathExtension];
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NSArray *decoders = [decodersByExtension objectForKey:[ext lowercaseString]];
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NSString *classString;
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if (decoders) {
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if ( [decoders count] > 1 ) {
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return [[CogDecoderMulti alloc] initWithDecoders:decoders];
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}
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else {
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classString = [decoders objectAtIndex:0];
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}
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}
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else {
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classString = [decodersByMimeType objectForKey:[[source mimeType] lowercaseString]];
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}
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Class decoder = NSClassFromString(classString);
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return [[decoder alloc] init];
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}
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- (NSDictionary *)metadataForURL:(NSURL *)url
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{
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NSString *ext = [[url path] pathExtension];
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NSArray *readers = [metadataReaders objectForKey:[ext lowercaseString]];
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NSString *classString;
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if (readers) {
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if ( [readers count] > 1 ) {
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return [CogMetadataReaderMulti metadataForURL:url readers:readers];
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}
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else {
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classString = [readers objectAtIndex:0];
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}
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}
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else {
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return nil;
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}
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Class metadataReader = NSClassFromString(classString);
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return [metadataReader metadataForURL:url];
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}
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//If no properties reader is defined, use the decoder's properties.
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- (NSDictionary *)propertiesForURL:(NSURL *)url
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{
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NSString *ext = [[url path] pathExtension];
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id<CogSource> source = [self audioSourceForURL:url];
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if (![source open:url])
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return nil;
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NSArray *readers = [propertiesReadersByExtension objectForKey:[ext lowercaseString]];
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NSString *classString;
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if (readers)
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{
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if ( [readers count] > 1 ) {
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return [CogPropertiesReaderMulti propertiesForSource:source readers:readers];
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}
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else {
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classString = [readers objectAtIndex:0];
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}
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}
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else {
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classString = [propertiesReadersByMimeType objectForKey:[[source mimeType] lowercaseString]];
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}
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if (classString)
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{
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Class propertiesReader = NSClassFromString(classString);
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return [propertiesReader propertiesForSource:source];
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}
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else
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{
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id<CogDecoder> decoder = [self audioDecoderForSource:source];
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if (![decoder open:source])
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{
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return nil;
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}
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NSDictionary *properties = [decoder properties];
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[decoder close];
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return properties;
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}
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}
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- (int)putMetadataInURL:(NSURL *)url
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{
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return 0;
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}
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@end
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