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/*
* Copyright 2009,2010,2011 Reality Jockey, Ltd.
* info@rjdj.me
* http://rjdj.me/
*
* This file is part of ZenGarden.
*
* ZenGarden is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* ZenGarden is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with ZenGarden. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "MessagePipe.h"
#include "PdGraph.h"
MessageObject *MessagePipe::newObject(PdMessage *initMessage, PdGraph *graph) {
return new MessagePipe(initMessage, graph);
}
MessagePipe::MessagePipe(PdMessage *initMessage, PdGraph *graph) : MessageObject(2, 1, graph) {
delayMs = initMessage->isFloat(0) ? (double) initMessage->getFloat(0) : 0.0;
}
MessagePipe::~MessagePipe() {
// nothing to do
}
const char *MessagePipe::getObjectLabel() {
return "pipe";
}
bool MessagePipe::shouldDistributeMessageToInlets() {
return false;
}
void MessagePipe::sendMessage(int outletIndex, PdMessage *message) {
// remove the scheduled message from the list before it is sent
scheduledMessagesList.remove(message);
MessageObject::sendMessage(outletIndex, message);
}
void MessagePipe::processMessage(int inletIndex, PdMessage *message) {
switch (inletIndex) {
case 0: {
switch (message->getType(0)) {
case SYMBOL: {
if (message->isSymbol(0, "flush")) {
// cancel all scheduled messages and send them immediately
for(list<PdMessage *>::iterator it = scheduledMessagesList.begin();
it != scheduledMessagesList.end(); it++) {
// send the message using the super class's sendMessage because otherwise the
// list will be changed while iterating over it. Leads to badness.
(*it)->setTimestamp(message->getTimestamp());
MessageObject::sendMessage(0, *it);
graph->cancelMessage(this, 0, *it); // cancel the scheduled message and free it from memory
}
scheduledMessagesList.clear();
break;
} else if (message->isSymbol(0, "clear")) {
// cancel all scheduled messages
for(list<PdMessage *>::iterator it = scheduledMessagesList.begin();
it != scheduledMessagesList.end(); it++) {
graph->cancelMessage(this, 0, *it);
}
scheduledMessagesList.clear();
break;
}
// allow fall-through
}
case FLOAT:
case BANG: {
// copy the message, update the timestamp, schedule it to be sent later
int numElements = message->getNumElements();
PdMessage *scheduledMessage = PD_MESSAGE_ON_STACK(numElements);
scheduledMessage->initWithTimestampAndNumElements(message->getTimestamp() + delayMs, numElements);
memcpy(scheduledMessage->getElement(0), message->getElement(0), numElements * sizeof(MessageAtom));
scheduledMessagesList.push_back(graph->scheduleMessage(this, 0, scheduledMessage));
break;
}
default: {
break;
}
}
}
case 1: {
if (message->isFloat(0)) {
delayMs = (double) message->getFloat(0);
}
break;
}
default: {
break;
}
}
}
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