// // GameFile.m // Cog // // Created by Vincent Spader on 5/29/06. // Copyright 2006 Vincent Spader. All rights reserved. // #import "GameDecoder.h" #import "Logging.h" #import "PlaylistController.h" @implementation GameDecoder gme_err_t readCallback(void *data, void *out, int count) { id source = (__bridge id)data; DLog(@"Amount: %i", count); int n = (int)[source read:out amount:count]; DLog(@"Read: %i", n); if(n <= 0) { DLog(@"ERROR!"); return (gme_err_t)1; // Return non-zero for error } return 0; // Return 0 for no error } - (id)init { self = [super init]; if(self) { emu = NULL; } return self; } - (BOOL)open:(id)s { [self setSource:s]; // We need file-size to use GME if(![source seekable]) { return NO; } gme_err_t error; NSString *ext = [[[source url] pathExtension] lowercaseString]; gme_type_t type = gme_identify_extension([ext UTF8String]); if(!type) { ALog(@"GME: No type!"); return NO; } sampleRate = [[[[NSUserDefaultsController sharedUserDefaultsController] defaults] valueForKey:@"synthSampleRate"] doubleValue]; if(sampleRate < 8000.0) { sampleRate = 44100.0; } else if(sampleRate > 192000.0) { sampleRate = 192000.0; } if(type == gme_spc_type || type == gme_sfm_type) sampleRate = 32000.0; emu = gme_new_emu(type, (int)sampleRate); if(!emu) { ALog(@"GME: No new emu!"); return NO; } [source seek:0 whence:SEEK_END]; long size = [source tell]; [source seek:0 whence:SEEK_SET]; DLog(@"Size: %li", size); error = gme_load_custom(emu, readCallback, size, (__bridge void *)(s)); if(error) { ALog(@"GME: ERROR Loding custom!"); return NO; } NSURL *m3uurl = [[source url] URLByDeletingPathExtension]; m3uurl = [m3uurl URLByAppendingPathExtension:@"m3u"]; id audioSourceClass = NSClassFromString(@"AudioSource"); id m3usrc = [audioSourceClass audioSourceForURL:m3uurl]; if([m3usrc open:m3uurl]) { if([m3usrc seekable]) { [m3usrc seek:0 whence:SEEK_END]; long size = [m3usrc tell]; [m3usrc seek:0 whence:SEEK_SET]; void *data = malloc(size); [m3usrc read:data amount:size]; gme_load_m3u_data(emu, data, size); free(data); } } int track_num = [[[source url] fragment] intValue]; // What if theres no fragment? Assuming we get 0. gme_info_t *info; error = gme_track_info(emu, &info, track_num); if(error) { ALog(@"Unable to get track info"); return NO; } // As recommended if(info->length > 0) { DLog(@"Using length: %i", info->length); length = info->length; } else if(info->loop_length > 0) { DLog(@"Using loop length: %i", info->loop_length); int loopCount = [[[[NSUserDefaultsController sharedUserDefaultsController] defaults] valueForKey:@"synthDefaultLoopCount"] intValue]; if(loopCount < 0) { loopCount = 1; } else if(loopCount > 10) { loopCount = 10; } length = info->intro_length + loopCount * info->loop_length; } else { double defaultLength = [[[[NSUserDefaultsController sharedUserDefaultsController] defaults] valueForKey:@"synthDefaultSeconds"] doubleValue]; if(defaultLength < 0) { defaultLength = 150.0; } length = (int)ceil(defaultLength * 1000.0); DLog(@"Setting default: %li", length); } if(info->fade_length >= 0) { fade = info->fade_length; } else { double defaultFade = [[[[NSUserDefaultsController sharedUserDefaultsController] defaults] valueForKey:@"synthDefaultFadeSeconds"] doubleValue]; if(defaultFade < 0) { defaultFade = 0; } fade = (int)ceil(defaultFade * 1000.0); } gme_free_info(info); DLog(@"Length: %li", length); DLog(@"Track num: %i", track_num); error = gme_start_track(emu, track_num); if(error) { ALog(@"GME: Error starting track"); return NO; } length += fade; [self willChangeValueForKey:@"properties"]; [self didChangeValueForKey:@"properties"]; return YES; } - (NSDictionary *)properties { return @{ @"bitrate": @(0), @"sampleRate": @(sampleRate), @"totalFrames": @((long)(length * (sampleRate * 0.001))), @"bitsPerSample": @(sizeof(short) * 8), // Samples are short @"channels": @(2), // output from gme_play is in stereo @"seekable": @(YES), @"endian": @"host", @"encoding": @"synthesized" }; } - (NSDictionary *)metadata { return @{}; } - (AudioChunk *)readAudio { int frames = 1024; void *buf = (void *)sampleBuffer; id audioChunkClass = NSClassFromString(@"AudioChunk"); AudioChunk *chunk = [[audioChunkClass alloc] initWithProperties:[self properties]]; int numSamples = frames * 2; // channels = 2 if(gme_track_ended(emu)) { return nil; } if(IsRepeatOneSet()) gme_set_fade(emu, -1, 0); else gme_set_fade(emu, (int)(length - fade), (int)fade); gme_play(emu, numSamples, (short int *)buf); // Some formats support length, but we'll add that in the future. //(From gme.txt) If track length, then use it. If loop length, play for intro + loop * 2. Otherwise, default to 2.5 minutes // GME will always generate samples. There's no real EOS. [chunk assignSamples:sampleBuffer frameCount:numSamples]; return chunk; } - (long)seek:(long)frame { gme_err_t error; error = gme_seek(emu, frame * sampleRate * 0.001); if(error) { return -1; } return frame; } - (void)close { if(emu) { gme_delete(emu); emu = NULL; } } - (void)dealloc { [self close]; } + (NSArray *)fileTypes { return @[@"ay", @"gbs", @"hes", @"kss", @"nsf", @"nsfe", @"sap", @"sfm", @"sgc", @"spc"]; } + (NSArray *)mimeTypes { return nil; } + (float)priority { return 1.0; } + (NSArray *)fileTypeAssociations { NSMutableArray *ret = [[NSMutableArray alloc] init]; [ret addObject:@"Game Music Emu Files"]; [ret addObject:@"vg.icns"]; [ret addObjectsFromArray:[self fileTypes]]; return @[ret]; } - (void)setSource:(id)s { source = s; } - (id)source { return source; } @end