private void Form1_Load(object sender, System.EventArgs e)
{
uint version = 0;
FMOD.RESULT result;
FMOD.DSPConnection dspconnectiontemp = null;
/*
* Create a System object and initialize.
*/
result = FMOD.Factory.System_Create(ref system);
ERRCHECK(result);
result = system.getVersion(ref version);
ERRCHECK(result);
if (version < FMOD.VERSION.number)
{
MessageBox.Show("Error! You are using an old version of FMOD " + version.ToString("X") + ". This program requires " + FMOD.VERSION.number.ToString("X") + ".");
Application.Exit();
}
result = system.init(32, FMOD.INITFLAGS.NORMAL, (IntPtr)null);
ERRCHECK(result);
result = system.createSound("../../../../../examples/media/drumloop.wav", FMOD.MODE.SOFTWARE | FMOD.MODE.LOOP_NORMAL, ref sound);
ERRCHECK(result);
result = system.playSound(FMOD.CHANNELINDEX.FREE, sound, false, ref channel);
ERRCHECK(result);
/*
* Create the DSP effects.
*/
result = system.createDSPByType(FMOD.DSP_TYPE.LOWPASS, ref dsplowpass);
ERRCHECK(result);
result = system.createDSPByType(FMOD.DSP_TYPE.CHORUS, ref dspchorus);
ERRCHECK(result);
/*
* Connect up the DSP network
*/
/*
* When a sound is played, a subnetwork is set up in the DSP network which looks like this.
* Wavetable is the drumloop sound, and it feeds its data from right to left.
*
* [DSPHEAD]<------------[DSPCHANNELMIXER]
*/
result = system.getDSPHead(ref dsphead);
ERRCHECK(result);
result = dsphead.getInput(0, ref dspchannelmixer, ref dspconnectiontemp);
ERRCHECK(result);
/*
* Now disconnect channeldsp head from wavetable to look like this.
*
* [DSPHEAD] [DSPCHANNELMIXER]
*/
result = dsphead.disconnectFrom(dspchannelmixer);
ERRCHECK(result);
/*
* Now connect the 2 effects to channeldsp head.
*
* [DSPLOWPASS]
* /
* [DSPHEAD] [DSPCHANNELMIXER]
\
\ [DSPCHORUS]
*/
result = dsphead.addInput(dsplowpass, ref dsplowpassconnection);
ERRCHECK(result);
result = dsphead.addInput(dspchorus, ref dspchorusconnection);
ERRCHECK(result);
/*
* Now connect the wavetable to the 2 effects
*
* [DSPLOWPASS]
* / \
* [DSPHEAD] [DSPCHANNELMIXER]
\ /
\ [DSPCHORUS]
*/
result = dsplowpass.addInput(dspchannelmixer, ref dspconnectiontemp);
ERRCHECK(result);
result = dspchorus.addInput(dspchannelmixer, ref dspconnectiontemp);
ERRCHECK(result);
/*
* Now the drumloop will be twice as loud, because it is being split into 2, then recombined at the end.
* What we really want is to only feed the dspchannelmixer->dsplowpass through the left speaker, and
* dspchannelmixer->dspchorus to the right speaker.
* We can do that simply by setting the pan, or speaker levels of the connections.
*
* [DSPLOWPASS]
* /1,0 \
* [DSPHEAD] [DSPCHANNELMIXER]
\0,1 /
* [DSPCHORUS]
*/
{
float[] leftinputon = { 1.0f, 0.0f };
float[] rightinputon = { 0.0f, 1.0f };
float[] inputsoff = { 0.0f, 0.0f };
result = dsplowpassconnection.setLevels(FMOD.SPEAKER.FRONT_LEFT, leftinputon, 2);
ERRCHECK(result);
result = dsplowpassconnection.setLevels(FMOD.SPEAKER.FRONT_RIGHT, inputsoff, 2);
ERRCHECK(result);
result = dsplowpassconnection.setLevels(FMOD.SPEAKER.FRONT_LEFT, inputsoff, 2);
ERRCHECK(result);
result = dsplowpassconnection.setLevels(FMOD.SPEAKER.FRONT_RIGHT, rightinputon, 2);
ERRCHECK(result);
}
result = dsplowpass.setBypass(true);
result = dspchorus.setBypass(true);
result = dsplowpass.setActive(true);
result = dspchorus.setActive(true);
}
