我在类上使用AudioKit的AKMIDIListener协议来侦听MIDI消息。这适用于标准邮件,例如Note On
,但SysEx
邮件未通过。
func receivedMIDINoteOn(noteNumber: MIDINoteNumber, velocity: MIDIVelocity, channel: MIDIChannel) {
NSLog("Note On \(noteNumber), \(velocity), \(channel)") // works perfectly
}
func receivedMIDISystemCommand(_ data: [MIDIByte]) {
NSLog("SysEx \(data)") // never triggers
// More code to handle the messages...
}
SysEx消息从外部硬件或测试软件发送。我已经使用MIDI监控应用程序来确保正确发送消息,但在我的应用程序中它们没有触发receivedMIDISystemCommand
。
接收我错过的SysEx消息是否还需要其他步骤?
提前感谢任何线索。
答案 0 :(得分:0)
编辑:感谢您引起我们的注意。现在,在AudioKit的开发分支中修复了SysEx接收问题:https://github.com/AudioKit/AudioKit/pull/1017
-
而不是
NSLog("SysEx \(data)")
你试过吗?
if let sysExCommand = AKMIDISystemCommand(rawValue: data[0]) {
print("MIDI System Command: \(sysExCommand)")
}
AKMIDISystemCommand会将您的SysEx数据转换为更有用的东西,定义如下:
public enum AKMIDISystemCommand: MIDIByte {
/// Trivial Case of None
case none = 0
/// System Exclusive
case sysex = 240
/// Song Position
case songPosition = 242
/// Song Selection
case songSelect = 243
/// Request Tune
case tuneRequest = 246
/// End System Exclusive
case sysexEnd = 247
/// Clock
case clock = 248
/// Start
case start = 250
/// Continue
case `continue` = 251
/// Stop
case stop = 252
/// Active Sensing
case activeSensing = 254
/// System Reset
case sysReset = 255
}
- matthew @ audiokit