public static void UnsubscribeFromMidi(this IMidiSampleProvider msp, Midi midi)
{
midi.NoteOn -= msp.HandleNoteOn;
midi.NoteOff -= msp.HandleNoteOff;
midi.PitchWheelChange -= msp.HandlePitchWheelChange;
midi.ControlChange -= msp.HandleControlChange;
}
public static void PlayMidiToFile(string midiFile, string destFile, IMidiSampleProvider msp, SynthData data)
{
float sampleNum = 0;
var file = new MidiFile(midiFile);
int ticksPerQuarterNote = file.DeltaTicksPerQuarterNote;
var events = file.Events.Aggregate((IEnumerable <MidiEvent>) new List <MidiEvent>(), (totalList, list) => totalList.Concat(list)).OrderBy(me => me.AbsoluteTime);
var totalEvents = events.Count();
var board = msp.Clone(data);
var midi = new Midi(ticksPerQuarterNote);
midi.NoteOn += board.HandleNoteOn;
midi.NoteOff += board.HandleNoteOff;
using (var output = new WaveFileWriter(destFile, WaveFormat.CreateIeeeFloatWaveFormat(data.SampleRate, 2)))
{
int eventCount = 0;
foreach (var me in events)
{
var absSample = midi.MidiTicksToSamples(me.AbsoluteTime, board.SampleRate);
var samples = (int)(absSample - sampleNum);
var result = new float[samples];
board.Next(result, 0, samples, 1);
output.WriteSamples(result, 0, samples);
sampleNum = absSample;
midi.HandleMidiEvent(me);
Console.WriteLine($"{++eventCount}/{totalEvents}");
}
}
}
public static void SubscribeToMidi(this IMidiSampleProvider msp, Midi midi)
{
midi.NoteOn += msp.HandleNoteOn;
midi.NoteOff += msp.HandleNoteOff;
midi.PitchWheelChange += msp.HandlePitchWheelChange;
midi.ControlChange += msp.HandleControlChange;
}
public static void PlayMidi(string midiFile, IMidiSampleProvider msp, SynthData data)
{
var file = new MidiFile(midiFile);
int ticksPerQuarterNote = file.DeltaTicksPerQuarterNote;
var events = file.Events.Aggregate((IEnumerable <MidiEvent>) new List <MidiEvent>(), (totalList, list) => totalList.Concat(list)).OrderBy(me => me.AbsoluteTime);
var totalEvents = events.Count();
var board = msp.Clone(data);
var midi = new Midi(ticksPerQuarterNote);
midi.NoteOn += board.HandleNoteOn;
midi.NoteOff += board.HandleNoteOff;
var synthResult = new SynthResult(data);
synthResult.ReplaceSynthProvider(board);
var aOut = new WaveOutEvent
{
DesiredLatency = data.DesiredLatency,
DeviceNumber = -1
};
aOut.Init(synthResult);
aOut.Play();
long startTime = DateTime.Now.Ticks;
foreach (var me in events)
{
while (DateTime.Now.Ticks - startTime < midi.MidiTicksToDateTimeTicks(me.AbsoluteTime))
{
;
}
midi.HandleMidiEvent(me);
}
}