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/*
* Copyright 2010,2012 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 "DspSend.h"
#include "PdGraph.h"
message::Object *DspSend::new_object(pd::Message *init_message, PdGraph *graph) {
return new DspSend(init_message, graph);
}
DspSend::DspSend(pd::Message *init_message, PdGraph *graph) : DspObject(0, 1, 0, 0, graph) {
if (init_message->is_symbol(0)) {
name = utils::copy_string(init_message->get_symbol(0));
dspBufferAtOutlet[0] = ALLOC_ALIGNED_BUFFER(graph->get_block_size()*sizeof(float));
} else {
name = NULL;
graph->print_err("send~ not initialised with a name.");
}
process_function = &processSignal;
}
DspSend::~DspSend() {
free(name);
FREE_ALIGNED_BUFFER(dspBufferAtOutlet[0]);
}
/*
* It would be very nice to not have to use memcpys with send~ and receive~, but unfortunately
* things become very complicated very quickly. If s~ is already in an attached graph, then
* everything works out fine. If s~ does not yet exist, then it is also easy for r~ to use the
* zero buffer as its output. Ideally, we'd like to remove s~ and r~ entirely from the dsp graph
* and all objects receiving from r~ to simply refer to the buffer at s~. But for that we'd need
* to make sure that the s~ buffer is accordingly retained and not reused before all r~ receivers
* have had a chance to use it.
*/
void DspSend::processSignal(DspObject *dspObject, int fromIndex, int toIndex) {
// make a defensive copy of the input in case the buffer is reused before all receives
// have had the chance to refer to it
DspSend *d = reinterpret_cast<DspSend *>(dspObject);
memcpy(d->dspBufferAtOutlet[0], d->dspBufferAtInlet[0], toIndex*sizeof(float));
}