cog/Plugins/GME/GameMetadataReader.m

106 lines
2.2 KiB
Objective-C

//
// GameMetadataReader.m
// GME
//
// Created by Vincent Spader on 10/12/07.
// Copyright 2007 __MyCompanyName__. All rights reserved.
//
#import "GameMetadataReader.h"
#import "GameDecoder.h"
#import <GME/gme.h>
#import "Logging.h"
@implementation GameMetadataReader
+ (NSArray *)fileTypes
{
return [GameDecoder fileTypes];
}
+ (NSArray *)mimeTypes
{
return [GameDecoder mimeTypes];
}
+ (NSDictionary *)metadataForURL:(NSURL *)url
{
id audioSourceClass = NSClassFromString(@"AudioSource");
id<CogSource> source = [audioSourceClass audioSourceForURL:url];
if (![source open:url])
return 0;
if (![source seekable])
return 0;
NSString *ext = [[[url path] pathExtension] lowercaseString];
gme_type_t type = gme_identify_extension([ext UTF8String]);
if (!type)
{
ALog(@"GME: No type!");
return NO;
}
Music_Emu* emu;
emu = gme_new_emu(type, gme_info_only);
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];
gme_err_t error;
error = gme_load_custom(emu, readCallback, size, source);
if (error)
{
ALog(@"GME: ERROR Loding file!");
return NO;
}
int track_num;
if ([[url fragment] length] == 0)
track_num = 0;
else
track_num = [[url fragment] intValue];
gme_info_t * info;
error = gme_track_info( emu, &info, track_num );
if (error)
{
ALog(@"GME: Unable to get track info");
}
gme_delete(emu);
NSString *title = [NSString stringWithUTF8String: info->song];
if (!title || ![title length])
{
// this is needed to distinguish between different tracks in NSF, for example
// otherwise they will all be displayed as 'blahblah.nsf' in playlist
title = [[url lastPathComponent] stringByAppendingFormat:@" [%d]", track_num];
}
NSDictionary * dict = [NSDictionary dictionaryWithObjectsAndKeys:
[NSString stringWithUTF8String: info->system], @"genre",
[NSString stringWithUTF8String: info->game], @"album",
title, @"title",
[NSString stringWithUTF8String: info->author], @"artist",
[NSNumber numberWithInt:track_num+1], @"track",
nil];
gme_free_info( info );
return dict;
}
@end