AmEvent* ErodeFilter::HandleEvent(AmEvent* event, const am_filter_params* /*params*/)
{
if (!event) return event;
ArpVALIDATE(mAddOn != NULL && mHolder != NULL, return event);
event->SetNextFilter(mHolder->FirstConnection() );
if (event->Type() == event->NOTEON_TYPE || event->Type() == event->NOTEOFF_TYPE) {
AmNoteOn* note;
note = dynamic_cast<AmNoteOn*>( event );
if( !note ) return event;
AmTime stoppingCondition = note->Duration() / 64;
if (stoppingCondition <= 0) return event;
AmNoteOn* nextNote = dynamic_cast<AmNoteOn*>( note->Copy() );
AmNoteOn* prevNote = note;
while ( nextNote != NULL && nextNote->Duration() >= stoppingCondition ) {
if (nextNote->Duration() <= 0) {
nextNote->Delete();
return event;
}
if ( prevNote->Duration() < 4 ) return event;
nextNote->SetDuration(prevNote->Duration () * 0.75 );
nextNote->SetStartTime(prevNote->EndTime() + 1);
prevNote->AppendEvent(nextNote);
prevNote = nextNote;
nextNote = dynamic_cast<AmNoteOn*> ( nextNote->Copy() );
}
}
return event;
}
void AmFilterTest1::TestBasic01()
{
int i;
printf("Making a vector.\n");
vector<int, allocator<int> > myVect(2);
myVect[0] = 1;
printf("Making a map.\n");
map< int, int, less<int>, allocator<int> > myMap;
myMap[0] = 1;
printf("Creating example filter object...\n");
fflush(stdout);
ArpExampleFilterAddon* exAddon = new ArpExampleFilterAddon;
AmFilterHolder* exHolder = new AmFilterHolder;
exHolder->SetFilter(exAddon->NewInstance(exHolder));
printf("Creating BSynth filter object...\n");
fflush(stdout);
#if 1
AmConsumerFilterAddon* syAddon = new AmConsumerFilterAddon();
#else
AmConsumerFilterAddon* syAddon = new AmConsumerFilterAddon("<midi port name>");
#endif
/* NOTE: The second consumer filter is not valid. You need to
* supply the name of the midi port you want to use.
*/
AmFilterHolder* syHolder = new AmFilterHolder;
syHolder->SetFilter(syAddon->NewInstance(syHolder));
printf("Creating debug filter object...\n");
fflush(stdout);
ArpDebugFilterAddon* dbAddon = new ArpDebugFilterAddon(true);
AmFilterHolder* dbHolder = new AmFilterHolder;
dbHolder->SetFilter(dbAddon->NewInstance(dbHolder));
printf("Attaching BSynth filter to example filter...\n");
fflush(stdout);
exHolder->AddSuccessor(syHolder);
printf("Attaching debug filter to BSynth filter...\n");
fflush(stdout);
syHolder->AddSuccessor(dbHolder);
printf("Creating a chain of NoteOn events...\n");
fflush(stdout);
AmEventI* evHead=NULL;
AmEventI* evTail=NULL;
for( i=1; i<=4; i++ ) {
{
AmProgramChange* ev = new AmProgramChange((i-1)*10,
PPQN*4*i-((PPQN*3)/2));
if( !evHead ) {
evHead = ev;
} else {
evTail->AppendEvent(ev);
}
ev->SetNextFilter(exHolder);
evTail = ev;
}
{
AmNoteOn* ev = new AmNoteOn(60+5*i,100,PPQN*4*i);
ev->SetRelVelocity(80);
if( !evHead ) {
evHead = ev;
} else {
evTail->AppendEvent(ev);
}
ev->SetNextFilter(exHolder);
evTail = ev;
}
{
AmTempoChange* ev = new AmTempoChange(120 + 40*i,PPQN*4*i);
if( !evHead ) {
evHead = ev;
} else {
evTail->AppendEvent(ev);
}
ev->SetNextFilter(exHolder);
evTail = ev;
}
}
printf("Initial Event Chain:\n");
fflush(stdout);
PrintEventChain(evHead);
fflush(stdout);
printf("Processing filters on event chain...\n");
fflush(stdout);
evHead = ArpExecFilters(evHead);
printf("Final event chain:\n");
fflush(stdout);
PrintEventChain(evHead);
fflush(stdout);
printf("Performing the song!\n");
fflush(stdout);
{
AmPerformer p;
p.Start(evHead);
// this is a bit of a hack to wait for it to finish;
// it will be better when we flesh out the performer
// interface to be able to send messages.
do {
snooze(1 * 1000000); // wait for a sec
} while( p.IsPlaying() );
}
fflush(stdout);
printf("Placing the BSynth filter in its own list...\n");
fflush(stdout);
exHolder->RemoveSuccessor(syHolder);
syHolder->RemoveSuccessor(dbHolder);
printf("Creating a chain of sixteenth notes...\n");
fflush(stdout);
evHead = evTail = new AmProgramChange(B_KALIMBA, 0);
evTail->SetNextFilter(syHolder);
evTail->AppendEvent(new AmTempoChange(480, 0));
evTail = evTail->TailEvent();
evTail->SetNextFilter(syHolder);
for( i=1; i<=4*4*4; i++ ) {
{
AmNoteOn* ev = new AmNoteOn(70+2*(i/(4*4)),100,PPQN*i/4);
ev->SetDuration(PPQN/8);
ev->SetRelVelocity(80);
if( !evHead ) {
evHead = ev;
} else {
evTail->AppendEvent(ev);
}
ev->SetNextFilter(syHolder);
evTail = ev;
}
}
printf("Performing the next song!\n");
fflush(stdout);
{
AmPerformer p;
p.Start(evHead);
// this is a bit of a hack to wait for it to finish;
// it will be better when we flesh out the performer
// interface to be able to send messages.
do {
snooze(1 * 1000000); // wait for a sec
} while( p.IsPlaying() );
}
fflush(stdout);
printf("Deleting filters -- WHICH FOR SOME REASON IS CRASHING, SO IT'S BEEN REMOVED.\n");
#if 0
exHolder->Delete();
exAddon->RemReference();
syHolder->Delete();
syAddon->RemReference();
dbHolder->Delete();
dbAddon->RemReference();
#endif
DoBigTest();
printf("Repeating test...\n");
fflush(stdout);
DoBigTest();
}