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/*
* Copyright 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 "MessageListPrepend.h"
MessageListPrepend::MessageListPrepend(pd::Message *init_message, PdGraph *graph) : message::Object(2, 1, graph) {
prependMessage = init_message->clone_on_heap();
}
MessageListPrepend::~MessageListPrepend() {
prependMessage->free_message();
}
void MessageListPrepend::process_message(int inlet_index, pd::Message *message) {
switch (inlet_index) {
case 0: {
int numPrependElements = prependMessage->get_num_elements();
int numMessageElements = message->get_num_elements();
int numElements = numPrependElements + numMessageElements;
pd::Message *outgoing_message = PD_MESSAGE_ON_STACK(numElements);
outgoing_message->from_timestamp(message->get_timestamp(), numElements);
memcpy(outgoing_message->get_element(0), prependMessage->get_element(0), numPrependElements * sizeof(pd::message::Atom));
memcpy(outgoing_message->get_element(numPrependElements), message->get_element(0), numMessageElements * sizeof(pd::message::Atom));
send_message(0, outgoing_message);
break;
}
case 1: {
// NOTE(mhroth): would be faster to copy in place rather than destroying and creating memory
// can change if it becomes a problem
prependMessage->free_message();
prependMessage = message->clone_on_heap();
break;
}
default: {
break;
}
}
}