public (short, short) GetSample(int index, double sampleRate, Tone t)
{
var time = MidiTimingConverter.GetTime(index, (int)sampleRate);
var i = (int)((index % (100)) * (32 * 0.01));
if (i > 31)
{
i -= 32;
}
var o = Wave[i];
float vol;
EnvelopeFlag flag = EnvelopeFlag.Attack;
if (time > Envelope.A)
{
flag = EnvelopeFlag.Decay;
}
if (time > Envelope.A + Envelope.D)
{
flag = EnvelopeFlag.Sustain;
}
switch (flag)
{
case EnvelopeFlag.Attack:
vol = (float)MathHelper.Linear(time, 0, Envelope.A, 0, 1);
break;
case EnvelopeFlag.Decay:
vol = (float)MathHelper.Linear(time, Envelope.A, Envelope.A + Envelope.D, 1, Envelope.S * 0.0039);
break;
case EnvelopeFlag.Sustain:
vol = Envelope.S * 0.0039f;
break;
case EnvelopeFlag.Release:
case EnvelopeFlag.None:
default:
vol = 0;
break;
}
if (t != null)
{
t.EnvVolume = vol;
}
short a = (short)(Math.Min(short.MaxValue, Math.Max(short.MinValue, o * vol)));
return(a, a);
}
public (short l, short r) GetSample(int index, double sampleRate)
{
var time = MidiTimingConverter.GetTime(index, (int)sampleRate);
//var cycle = sampleRate / freq;
//if (cycle == 0)
// return (0, 0);
var i = (int)((index % (100)) * (32 / 100d));
//var i = index;
if (i > 31)
{
i -= 32;
}
var o = Wave[i];
float vol;
EnvelopeFlag flag = EnvelopeFlag.Attack;
if (time > Envelope.A)
{
flag = EnvelopeFlag.Decay;
}
if (time > Envelope.A + Envelope.D)
{
flag = EnvelopeFlag.Sustain;
}
switch (flag)
{
case EnvelopeFlag.Attack:
vol = (float)MathHelper.Linear(time, 0, Envelope.A, 0, 1);
break;
case EnvelopeFlag.Decay:
vol = (float)MathHelper.Linear(time, Envelope.A + 1, Envelope.D, 1, Envelope.S / 255d);
break;
case EnvelopeFlag.Sustain:
vol = Envelope.S / 255f;
break;
case EnvelopeFlag.Release:
case EnvelopeFlag.None:
default:
vol = 0;
break;
}
return((short)(o * vol), (short)(o * vol));
}
public void Stop()
{
ReleasedVolume = OutVolume;
Envflag = EnvelopeFlag.Release;
Tick = 0;
IsStopping = true;
//Console.WriteLine("[DEBUG]音源再生終了リクエスト受信");
}
public void StartPlay(int miditick, int gate)
{
_outvolume = 0;
Playing = true;
DX.ChangeVolumeSoundMem(0, Handle);
DX.SetFrequencySoundMem((int) (GetFreq(Pitch, 4) * 100), Handle);
if (Octave > 6)
DX.SetFrequencySoundMem((int) (GetFreq(Pitch, Octave - 2) * 100), Handle);
DX.PlaySoundMem(Handle, DX.DX_PLAYTYPE_LOOP);
//DX.ChangeVolumeSoundMem(0, Handle);
Envflag = EnvelopeFlag.Attack;
Tick = (int) (Envelope.AttackTime / 1.2);
Bmilisec = DX.GetNowCount();
StartedMidiTick = miditick;
Gate = gate;
//Console.WriteLine("[DEBUG]音源再生開始");
}
public void PlayLoop(int miditick)
{
if (!Playing)
return;
if (IsNew && _beforenew)
IsNew = false;
if (!_beforenew)
_beforenew = true;
//if (DX.GetNowCount() - bmilisec <= 0)
// return;
#region ふるいの
/*
switch (envflag)
{
case EnvelopeFlag.Attack:
if (Envelope.AttackTime <= 1)
{
tick = -1;
envflag = EnvelopeFlag.Decay;
break;
}
if (tick >= Envelope.AttackTime)
{
tick = -1;
envflag = EnvelopeFlag.Decay;
break;
}
_outvolume = (int)((tick) * ((float)Volume / (Envelope.AttackTime - 1)));
break;
case EnvelopeFlag.Decay:
if (Envelope.DecayTime == 0)
{
tick = -1;
envflag = EnvelopeFlag.Sustain;
break;
}
if (tick >= Envelope.DecayTime)
{
tick = -1;
envflag = EnvelopeFlag.Sustain;
break;
}
_outvolume = (int)(Volume - (tick + 1) * ((float)(Volume - Envelope.SustainLevel * (Volume / 255.0)) / Envelope.DecayTime));
break;
case EnvelopeFlag.Release:
if (tick >= Envelope.ReleaseTime)
{
Abort();
return;
}
_outvolume = (int)(releasedVolume - (tick + 1) * ((float)releasedVolume / Envelope.ReleaseTime));
break;
}
*/
#endregion
switch (Envflag)
{
case EnvelopeFlag.Attack:
if (Envelope.AttackTime == 0)
{
_outvolume = 255;
Envflag = EnvelopeFlag.Decay;
break;
}
var zoubun = 255f / Envelope.AttackTime;
_outvolume = _outvolume + zoubun * Tick;
if (_outvolume >= 255)
{
_outvolume = 255;
Envflag = EnvelopeFlag.Decay;
}
break;
case EnvelopeFlag.Decay:
if (Envelope.DecayTime == 0)
{
_outvolume = Envelope.SustainLevel;
Envflag = EnvelopeFlag.Sustain;
break;
}
var genbun = (255f - Envelope.SustainLevel) / Envelope.DecayTime;
_outvolume = _outvolume - genbun * Tick;
if (_outvolume <= Envelope.SustainLevel)
{
_outvolume = Envelope.SustainLevel;
Envflag = EnvelopeFlag.Sustain;
}
break;
case EnvelopeFlag.Release:
if (Envelope.ReleaseTime == 0)
{
Abort();
break;
}
var genbun2 = (float) ReleasedVolume / Envelope.ReleaseTime;
_outvolume = _outvolume - genbun2 * Tick;
if (_outvolume <= 0)
{
_outvolume = 0;
Abort();
}
break;
}
NowMidiTick = miditick;
if ((NowMidiTick - StartedMidiTick > Gate) && (Gate != -1) && (Envflag != EnvelopeFlag.Release))
Stop();
Tick = DX.GetNowCount() - Bmilisec;
Bmilisec = DX.GetNowCount();
//Console.WriteLine("[DEBUG]音源ループ: {0}, {1}, {2}", outVolume, tick, envflag);
}
public void Abort()
{
Tick = 0;
Envflag = EnvelopeFlag.None;
DX.StopSoundMem(Handle);
DX.DeleteSoundMem(Handle);
Playing = false;
//Console.WriteLine("[DEBUG]音源再生終了");
}
