AmEvent* ArpVelocityMapFilter::HandleEvent(AmEvent* event, const am_filter_params* /*params*/)
{
if (!event) return event;
ArpVALIDATE(mAddOn != NULL && mHolder != NULL, return event);
event->SetNextFilter(mHolder->ConnectionAt(0) );
if (event->Type() != event->NOTEON_TYPE) return event;
AmNoteOn* e = dynamic_cast<AmNoteOn*>(event);
if (!e || !in_range(e, mFromRange) ) return event;
int32 fromStart = mFromRange.start, fromEnd = mFromRange.end;
int32 toStart = mToRange.start, toEnd = mToRange.end;
/* If both the from and start are reversed, but them back to normal.
* Otherwise leave them skewed, to allow users to invert the range.
*/
if (fromEnd < fromStart && toEnd < toStart) {
fromStart = mFromRange.end;
fromEnd = mFromRange.start;
toStart = mToRange.end;
toEnd = mToRange.start;
}
float scale = fabs(float(fromEnd - fromStart) / float(toEnd - toStart));
if (mToRange.end < mToRange.start) scale = -scale;
int32 newVel = int32(toStart + ((e->Velocity() - fromStart) * scale));
if (toStart < toEnd) {
if (newVel < toStart) newVel = toStart;
else if (newVel > toEnd) newVel = toEnd;
} else {
if (newVel < toEnd) newVel = toEnd;
else if (newVel > toStart) newVel = toStart;
}
e->SetVelocity(newVel);
return event;
}
AmEvent* ArpAccentRandomizerFilter::HandleEvent(AmEvent* event, const am_filter_params* /*params*/)
{
if(!event)
return event;
ArpVALIDATE(mAddOn != 0 && mHolder != 0, return event);
event->SetNextFilter(mHolder->FirstConnection() );
if( (event->Type() == event->NOTEON_TYPE) && (0 < mRandomizeAmount) ) {
AmNoteOn* note = dynamic_cast<AmNoteOn*>(event);
if(!note)
return event;
int32 delta = rand() % mRandomizeAmount;
if(rand() % 2) // flip sign with 50% chance
delta *= -1;
int32 vel = note->Velocity();
vel += delta;
if(vel > 127)
vel = 127;
if(vel < 0)
vel = 0;
note->SetVelocity(vel);
}
return event;
}
AmEvent* ArpVaccineFilter::HandleEvent(AmEvent* event, const am_filter_params* params)
{
if (!event) return event;
if (mFrequency == 0 || mAmount == 0) return event;
if (event->Type() != event->NOTEON_TYPE && event->Type() != event->NOTEOFF_TYPE) return event;
if ( !ShouldVaccinate(mFrequency) ) return event;
ArpVALIDATE(params && params->cur_signature, return event);
const AmSignature* curSig = params->cur_signature;
AmSignature sig;
if ( !get_signature(event->StartTime(), curSig, sig) ) return event;
int32 prox = (int32)(proximity_to_beat(event->StartTime(), sig) * 100);
float prox2 = (float)abs(mProximity - prox) / 100;
// printf("proximity is %ld, that puts prox2 at %f\n", prox, prox2);
if (prox2 < 0) prox2 = 0;
else if (prox2 > 1) prox2 = 1;
prox2 = 1 - prox2;
/* If there are tool params, set my amount based on the param data.
*/
int32 amount = mAmount;
if (params->flags&AMFF_TOOL_PARAMS) {
if (mAmount >= 0) amount = (int32)(params->view_orig_y_pixel - params->view_cur_y_pixel);
else amount = (int32)(params->view_cur_y_pixel - params->view_orig_y_pixel);
if (amount < MIN_AMOUNT) amount = MIN_AMOUNT;
else if (amount > MAX_AMOUNT) amount = MAX_AMOUNT;
}
if (event->Type() == event->NOTEON_TYPE) {
AmNoteOn* noe = dynamic_cast<AmNoteOn*>(event);
if (noe) {
int32 vel = noe->Velocity();
float scale = ((float)amount / 100) * prox2;
vel = vel + (int32)(vel * scale);
if (vel < 0) vel = 0;
else if (vel > 127) vel = 127;
noe->SetVelocity(vel);
}
} else if (event->Type() == event->NOTEOFF_TYPE) {
}
return event;
}