74 lines
2.0 KiB
Objective-C
74 lines
2.0 KiB
Objective-C
//
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// MIKMIDIClientSourceEndpoint.m
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// MIKMIDI
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//
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// Created by Dan Rosenstark on 2015-01-07
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//
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#import "MIKMIDIClientSourceEndpoint.h"
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#import "MIKMIDICommand.h"
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#import "MIKMIDIErrors.h"
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@implementation MIKMIDIClientSourceEndpoint
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+ (NSArray *)representedMIDIObjectTypes; { return @[@(kMIDIObjectType_Source)]; }
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- (instancetype)initWithName:(NSString*)name error:(NSError **)error
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{
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error = error ?: &(NSError *__autoreleasing){ nil };
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if (!name || name.length == 0) {
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[NSException raise:@"Problem instantiating MIKMIDIClientSourceEndpoint" format:@"Virtual endpoint needs name"];
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*error = [NSError MIKMIDIErrorWithCode:MIKMIDIInvalidArgumentError userInfo:nil];
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return nil;
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}
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MIDIClientRef midiClient;
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MIDIEndpointRef midiOut;
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MIDIClientCreate((__bridge CFStringRef)name, NULL, NULL, &midiClient);
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OSStatus err = MIDISourceCreate(midiClient, (__bridge CFStringRef)name, &midiOut);
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if (err != noErr) {
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NSLog(@"%s failed. Unable to create MIDISource.", __PRETTY_FUNCTION__);
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#if TARGET_OS_IPHONE
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if (err == kMIDINotPermitted) {
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NSLog(@"MIKMIDI's use of some CoreMIDI functions requires that your app have the audio key in its UIBackgroundModes.\n"
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"Please see https://github.com/mixedinkey-opensource/MIKMIDI/wiki/Adding-Audio-to-UIBackgroundModes");
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}
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#endif
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*error = [NSError errorWithDomain:NSOSStatusErrorDomain code:err userInfo:nil];
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return nil;
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}
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self = [super initWithObjectRef:midiOut];
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if (self) {
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}
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return self;
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}
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- (BOOL)sendCommands:(NSArray *)commands error:(NSError **)error
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{
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if (![commands count]) return NO;
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error = error ? error : &(NSError *__autoreleasing){ nil };
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MIDIPacketList *packetList;
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if (!MIKCreateMIDIPacketListFromCommands(&packetList, commands)) return NO;
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OSStatus err = MIDIReceived(self.objectRef, packetList);
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free(packetList);
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if (err != noErr) {
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*error = [NSError errorWithDomain:NSOSStatusErrorDomain code:err userInfo:nil];
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return NO;
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}
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return YES;
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}
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-(void)dealloc
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{
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MIDIEndpointDispose(self.objectRef);
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}
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@end
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