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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 "MessageDelay.h"
#include "PdGraph.h"
message::Object *MessageDelay::new_object(pd::Message *init_message, PdGraph *graph) {
return new MessageDelay(init_message, graph);
}
MessageDelay::MessageDelay(pd::Message *init_message, PdGraph *graph) : message::Object(2, 1, graph) {
delayMs = init_message->is_float(0) ? (double) init_message->get_float(0) : 0.0;
scheduledMessage = NULL;
}
MessageDelay::~MessageDelay() {
// nothing to do
}
void MessageDelay::cancelScheduledMessageIfExists() {
if (scheduledMessage != NULL) {
graph->cancel_message(this, 0, scheduledMessage);
scheduledMessage = NULL;
}
}
void MessageDelay::process_message(int inlet_index, pd::Message *message) {
switch (inlet_index) {
case 0: {
switch (message->get_type(0)) {
case SYMBOL: {
if (message->is_symbol_str(0, "stop")) {
cancelScheduledMessageIfExists();
break;
}
// allow fall-through
}
case FLOAT:
case BANG: {
cancelScheduledMessageIfExists();
scheduledMessage = PD_MESSAGE_ON_STACK(1);
scheduledMessage->from_timestamp_and_bang(message->get_timestamp() + delayMs);
scheduledMessage = graph->schedule_message(this, 0, scheduledMessage);
break;
}
default: {
break;
}
}
break;
}
case 1: {
if (message->is_float(0)) {
// if an outstanding message exists when the delay is reset, the message is cancelled
cancelScheduledMessageIfExists();
delayMs = (double) message->get_float(0);
}
break;
}
default: {
break;
}
}
}
void MessageDelay::send_message(int outlet_index, pd::Message *message) {
if (message == scheduledMessage) {
// now that we know that this message is being sent, we don't have to worry about it anymore
scheduledMessage = NULL;
}
message::Object::send_message(outlet_index, message);
}