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/*
* Copyright (C) 2016 Robin Gareus <robin@gareus.org>
* Copyright (C) 2006 Paul Davis
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <algorithm>
#include "pbd/xml++.h"
#include "ardour/audioengine.h"
#include "ardour/buffer.h"
#include "ardour/buffer_set.h"
#include "ardour/io.h"
#include "ardour/session.h"
#include "ardour/sidechain.h"
#include "i18n.h"
using namespace ARDOUR;
using namespace PBD;
SideChain::SideChain (Session& s, const std::string& name)
: IOProcessor (s, true, false, name)
{
}
SideChain::~SideChain ()
{
}
XMLNode&
SideChain::state(bool full)
{
XMLNode& node = IOProcessor::state(full);
node.add_property ("type", "sidechain");
return node;
}
int
SideChain::set_state (const XMLNode& node, int version)
{
XMLNodeList nlist = node.children();
const XMLNode* insert_node = &node;
for (XMLNodeIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
if ((*niter)->name() == "IOProcessor") {
insert_node = *niter;
}
}
IOProcessor::set_state (*insert_node, version);
return 0;
}
void
SideChain::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool)
{
if (_input->n_ports() == ChanCount::ZERO) {
// inplace pass-through
return;
}
if ((!_active && !_pending_active)) {
// zero buffers
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
for (uint32_t out = _configured_input.get (*t); out < bufs.count().get (*t); ++out) {
bufs.get (*t, out).silence (nframes);
}
}
return;
}
_input->collect_input (bufs, nframes, _configured_input);
bufs.set_count(_configured_output);
_active = _pending_active;
}
bool
SideChain::can_support_io_configuration (const ChanCount& in, ChanCount& out)
{
out = in + _input->n_ports();
return true;
}
bool
SideChain::configure_io (ChanCount in, ChanCount out)
{
if (out != in + _input->n_ports()) {
return false;
}
Processor::configure_io(in, out);
return true;
}
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