void cDelay_onMessage(HvBase *_c, ControlDelay *o, int letIn, const HvMessage *const m,
void (*sendMessage)(HvBase *, int, const HvMessage *const)) {
switch (letIn) {
case 0: {
if (msg_compareSymbol(m, 0, "flush")) {
// send all messages immediately
for (int i = 0; i < __HV_DELAY_MAX_MESSAGES; i++) {
HvMessage *n = o->msgs[i];
if (n != NULL) {
msg_setTimestamp(n, msg_getTimestamp(m)); // update the timestamp to now
sendMessage(_c, 0, n); // send the message
ctx_cancelMessage(_c, n, sendMessage); // then clear it
// NOTE(mhroth): there may be a problem here if a flushed message causes a clear message to return
// to this object in the same step
}
}
hv_memset(o->msgs, __HV_DELAY_MAX_MESSAGES*sizeof(HvMessage *));
} else if (msg_compareSymbol(m, 0, "clear")) {
// cancel (clear) all (pending) messages
for (int i = 0; i < __HV_DELAY_MAX_MESSAGES; i++) {
HvMessage *n = o->msgs[i];
if (n != NULL) {
ctx_cancelMessage(_c, n, sendMessage);
}
}
hv_memset(o->msgs, __HV_DELAY_MAX_MESSAGES*sizeof(HvMessage *));
} else {
hv_uint32_t ts = msg_getTimestamp(m);
msg_setTimestamp((HvMessage *) m, ts+o->delay); // update the timestamp to set the delay
int i;
for (i = 0; i < __HV_DELAY_MAX_MESSAGES; i++) {
if (o->msgs[i] == NULL) {
o->msgs[i] = ctx_scheduleMessage(_c, m, sendMessage, 0);
break;
}
}
hv_assert(i < __HV_DELAY_MAX_MESSAGES); // scheduled message limit reached
msg_setTimestamp((HvMessage *) m, ts); // return to the original timestamp
}
break;
}
case 1: {
if (msg_isFloat(m,0)) {
// set delay in milliseconds
o->delay = ctx_millisecondsToSamples(_c,msg_getFloat(m,0));
}
break;
}
case 2: {
if (msg_isFloat(m,0)) {
// set delay in samples
o->delay = (hv_uint32_t) msg_getFloat(m,0);
}
break;
}
default: break;
}
}
void hv_cancelMessage(HvBase *c, HvMessage *m) {
ctx_cancelMessage(c, m, NULL);
}
