int CHAIN::run()
{
for (std::vector<Instrument *>::iterator it = mInstVector.begin(); it != mInstVector.end(); ++it) {
Instrument *inst = *it;
if (!inst->isDone()) {
inst->setchunk(framesToRun()); // For outer instrument, this is done in inTraverse()
inst->run(true);
}
else {
inst->clearOutput(framesToRun()); // This should be optimized to happen only once
}
inst->addout(BUS_NONE_OUT, 0); // Special bus type makes this a no-op
}
// Copy from inputChainedBuf, which points to the outbuf of the last instrument in the chain.
unsigned copySize = framesToRun() * outputChannels() * sizeof(BUFTYPE);
memcpy(outbuf, inputChainBuf, copySize);
return framesToRun();
}
double note_exists(const Arg args[], const int nargs)
{
if (nargs != 1)
return die("note_exists", "Usage: val = note_exists(Instrument_Handle)");
Instrument *Iptr = (Instrument *)args[0];
if (Iptr == NULL) {
warn("note_exists", "Instrument/note not initialized");
return -1;
}
Iptr->ref(); // increase ref count on instrument
double retval;
if (Iptr->isDone() == true)
retval = 0.0;
else
retval = 1.0;
Iptr->unref(); // decrease ref count on instrument
return retval;
}