public OscSoundEvent(double freq)
: base()
{
_freq = freq;
FMOD.RESULT r = MusicEngine.AudioEngine.createDSPByType(FMOD.DSP_TYPE.OSCILLATOR, ref _dsp);
if (r == FMOD.RESULT.OK)
{
_dsp.setParameter((int)FMOD.DSP_OSCILLATOR.RATE, (float)freq); // freq in Hz.
}
}
private void sineWave_Click(object sender, System.EventArgs e)
{
FMOD.RESULT result;
float pan = 0, frequency = 0;
if (channel != null)
{
channel.stop();
}
if (dsp != null)
{
dsp.release();
}
/*
* Create an oscillator DSP unit for the tone.
*/
result = system.createDSPByType(FMOD.DSP_TYPE.OSCILLATOR, ref dsp);
ERRCHECK(result);
result = dsp.setParameter((int)FMOD.DSP_OSCILLATOR.RATE, 440.0f); /* musical note 'A' */
ERRCHECK(result);
result = system.playDSP(FMOD.CHANNELINDEX.REUSE, dsp, true, ref channel);
ERRCHECK(result);
channel.setVolume(0.5f);
result = dsp.setParameter((int)FMOD.DSP_OSCILLATOR.TYPE, 0);
ERRCHECK(result);
channel.setPaused(false);
channel.getFrequency(ref frequency);
channel.getPan(ref pan);
trackBarVolume.Value = 512;
trackBarFrequency.Value = (int)frequency;
trackBarPan.Value = (int)(pan * 512);
}
public static void Update()
{
if (system == null)
{
return;
}
// Update sound
if (channel != null)
{
FMOD.MODE mode = FMOD.MODE.DEFAULT;
channel.getMode(ref mode);
if ((mode & FMOD.MODE._3D) == FMOD.MODE._3D)
{
FMOD.VECTOR pos; pos.x = 0.0f; pos.y = 0.0f; pos.z = 0.0f;
FMOD.VECTOR vel; vel.x = 0.0f; vel.y = 0.0f; vel.z = 0.0f;
channel.get3DAttributes(ref pos, ref vel);
float distance = (float)Math.Sqrt((double)(pos.x * pos.x + pos.y * pos.y));
float minDist = 0.0f, maxDist = 1000.0f;
channel.get3DMinMaxDistance(ref minDist, ref maxDist);
float distRatio = distance / maxDist;
if (ignorefod == false)
{
// Set direct and reverb occlusion
float direct = 1.0f - GetDistanceRatioValue(CONTROLTYPE.DIRECT, distRatio);
float reverb = 1.0f - GetDistanceRatioValue(CONTROLTYPE.REVERB, distRatio);
channel.set3DOcclusion(direct, reverb);
// Set lowpass
FMOD.DSP head = null;
channel.getDSPHead(ref head);
if (head != null)
{
int inputs = 0;
head.getNumInputs(ref inputs);
for (int i = 0; i < inputs; i++)
{
FMOD.DSP dsp = null;
FMOD.DSPConnection dspcon = null;
head.getInput(i, ref dsp, ref dspcon);
if (dsp == null)
{
continue;
}
FMOD.DSP_TYPE type = FMOD.DSP_TYPE.UNKNOWN;
dsp.getType(ref type);
if (type == FMOD.DSP_TYPE.LOWPASS_SIMPLE)
{
float hrtf = 1.0f;
FMOD.VECTOR dir;
dir.x = pos.x;
dir.y = pos.y;
dir.z = 0.0f;
float length = (float)Math.Sqrt((double)(dir.x * dir.x + dir.y * dir.y));
if (length > 0.0001f)
{
length = 1.0f / length;
dir.x *= length;
dir.y *= length;
float _angle = (float)Math.Acos((double)dir.y);
hrtf = 1.0f - HRTFDATA.Scale * Math.Min(1.0f, Math.Max(0.0f, (_angle - HRTFDATA.MinAngle) / (HRTFDATA.MaxAngle - HRTFDATA.MinAngle)));
}
float lowpass = 21990.0f * GetDistanceRatioValue(CONTROLTYPE.LOWPASS, distRatio) * hrtf + 10.0f;
dsp.setParameter((int)FMOD.DSP_LOWPASS_SIMPLE.CUTOFF, lowpass);
break;
}
}
}
// Set pan level
float panlevel = GetDistanceRatioValue(CONTROLTYPE.PANLEVEL, distRatio);
channel.set3DPanLevel(panlevel);
}
else
{
channel.set3DPanLevel(0.0f);
}
}
}
system.update();
}
public static bool Play(string strRootPath, SoundItemProperty prop)
{
FMOD.RESULT result;
if (channel != null)
{
channel.stop();
}
string name = strRootPath + prop.FileName;
FMOD.MODE mode = FMOD.MODE.DEFAULT;
if (prop.Type == SoundItemProperty.typeSound[0])
{
mode |= FMOD.MODE._2D | FMOD.MODE.CREATESAMPLE | FMOD.MODE.SOFTWARE;
}
else if (prop.Type == SoundItemProperty.typeSound[1])
{
mode |= FMOD.MODE._3D | FMOD.MODE.CREATESAMPLE | FMOD.MODE.SOFTWARE | FMOD.MODE._3D_LINEARROLLOFF | FMOD.MODE._3D_WORLDRELATIVE | FMOD.MODE._3D_IGNOREGEOMETRY;
}
else if (prop.Type == SoundItemProperty.typeSound[2])
{
mode |= FMOD.MODE._2D | FMOD.MODE.CREATESTREAM | FMOD.MODE.SOFTWARE;
}
if (prop.Loop == true)
{
mode |= FMOD.MODE.LOOP_NORMAL;
}
result = system.createSound(name, mode, ref sound);
ERRCHECK(result);
result = system.playSound(FMOD.CHANNELINDEX.FREE, sound, true, ref channel);
ERRCHECK(result);
if (prop.Type == SoundItemProperty.typeSound[1])
{
channel.set3DMinMaxDistance(100.0f, prop.MaxDistance);
FMOD.VECTOR pos = new FMOD.VECTOR();
pos.x = 0.0f; pos.y = 0.0f; pos.z = 0.0f;
FMOD.VECTOR vel = new FMOD.VECTOR();
vel.x = 0.0f; vel.y = 0.0f; vel.z = 0.0f;
channel.set3DAttributes(ref pos, ref vel);
FMOD.DSP dsp = null;
result = system.createDSPByType(FMOD.DSP_TYPE.LOWPASS_SIMPLE, ref dsp);
ERRCHECK(result);
dsp.setParameter((int)FMOD.DSP_LOWPASS_SIMPLE.CUTOFF, 22000.0f);
FMOD.DSPConnection dspcon = null;
channel.addDSP(dsp, ref dspcon);
}
channel.setVolume((float)prop.Volume * 0.01f);
channel.setCallback(CHANNELCALLBACK);
channel.setPaused(false);
return(true);
}
public void SetParameter(int param, double value)
{
_dsp.setParameter(param, (float)value);
}