cd95cd68f8
Both the midi_processing and the various players may throw exceptions, so we should check for these too. Signed-off-by: Christopher Snowhill <kode54@gmail.com>
74 lines
1.5 KiB
Text
74 lines
1.5 KiB
Text
//
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// MIDIContainer.mm
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// MIDI
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//
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// Created by Christopher Snowhill on 10/16/13.
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// Copyright 2013 __NoWork, Inc__. All rights reserved.
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//
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#import "MIDIContainer.h"
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#import "MIDIDecoder.h"
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#import <midi_processing/midi_processor.h>
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#import "Logging.h"
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@implementation MIDIContainer
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+ (NSArray *)fileTypes {
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return [MIDIDecoder fileTypes];
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}
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+ (NSArray *)mimeTypes {
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return [MIDIDecoder mimeTypes];
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}
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+ (float)priority {
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return 1.0f;
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}
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// This really should be source...
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+ (NSArray *)urlsForContainerURL:(NSURL *)url {
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if([url fragment]) {
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// input url already has fragment defined - no need to expand further
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return [NSMutableArray arrayWithObject:url];
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}
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id audioSourceClass = NSClassFromString(@"AudioSource");
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id<CogSource> source = [audioSourceClass audioSourceForURL:url];
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if(![source open:url])
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return @[];
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if(![source seekable])
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return @[];
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[source seek:0 whence:SEEK_END];
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long size = [source tell];
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[source seek:0 whence:SEEK_SET];
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size_t track_count = 0;
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try {
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std::vector<uint8_t> data;
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data.resize(size);
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[source read:&data[0] amount:size];
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if(!midi_processor::process_track_count(data, [[url pathExtension] UTF8String], track_count))
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return @[];
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} catch (std::exception &e) {
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ALog(@"Exception caught processing MIDI track count: %s", e.what());
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return @[];
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}
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NSMutableArray *tracks = [NSMutableArray array];
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long i;
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for(i = 0; i < track_count; i++) {
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[tracks addObject:[NSURL URLWithString:[[url absoluteString] stringByAppendingFormat:@"#%li", i]]];
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}
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return tracks;
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}
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@end
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