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/*
Copyright (C) 2000 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <algorithm>
#include "pbd/xml++.h"
#include "ardour/return.h"
#include "ardour/session.h"
#include "ardour/port.h"
#include "ardour/audio_port.h"
#include "ardour/buffer_set.h"
#include "ardour/meter.h"
#include "ardour/panner.h"
#include "ardour/io.h"
#include "i18n.h"
using namespace ARDOUR;
using namespace PBD;
Return::Return (Session& s)
: IOProcessor (s, string_compose (_("return %1"), (_bitslot = s.next_return_id()) + 1))
{
ProcessorCreated (this); /* EMIT SIGNAL */
}
Return::Return (Session& s, const XMLNode& node)
: IOProcessor (s, "return")
{
if (set_state (node)) {
throw failed_constructor();
}
ProcessorCreated (this); /* EMIT SIGNAL */
}
Return::~Return ()
{
GoingAway ();
}
XMLNode&
Return::get_state(void)
{
return state (true);
}
XMLNode&
Return::state(bool full)
{
XMLNode& node = IOProcessor::state(full);
char buf[32];
node.add_property ("type", "return");
snprintf (buf, sizeof (buf), "%" PRIu32, _bitslot);
node.add_property ("bitslot", buf);
return node;
}
int
Return::set_state(const XMLNode& node)
{
XMLNodeList nlist = node.children();
XMLNodeIterator niter;
const XMLProperty* prop;
if ((prop = node.property ("bitslot")) == 0) {
_bitslot = _session.next_return_id();
} else {
sscanf (prop->value().c_str(), "%" PRIu32, &_bitslot);
_session.mark_return_id (_bitslot);
}
const XMLNode* insert_node = &node;
/* Return has regular IO automation (gain, pan) */
for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
if ((*niter)->name() == "IOProcessor") {
insert_node = *niter;
} else if ((*niter)->name() == X_("Automation")) {
// _io->set_automation_state (*(*niter), Evoral::Parameter(GainAutomation));
}
}
IOProcessor::set_state (*insert_node);
return 0;
}
void
Return::run_in_place (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes)
{
if (active()) {
_io->collect_input (bufs, nframes, _configured_input);
bufs.set_count(_configured_output);
}
}
bool
Return::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
{
out = in + _io->n_inputs();
return true;
}
bool
Return::configure_io (ChanCount in, ChanCount out)
{
if (out != in + _io->n_inputs()) {
return false;
}
// Ensure there are enough buffers (since we add some)
if (_session.get_scratch_buffers(in).count() < out) {
Glib::Mutex::Lock em (_session.engine().process_lock());
IO::PortCountChanged(out);
}
Processor::configure_io(in, out);
return true;
}
/** Set up the XML description of a return so that its name is unique.
* @param state XML return state.
* @param session Session.
*/
void
Return::make_unique (XMLNode &state, Session &session)
{
uint32_t const bitslot = session.next_return_id() + 1;
char buf[32];
snprintf (buf, sizeof (buf), "%" PRIu32, bitslot);
state.property("bitslot")->set_value (buf);
std::string const name = string_compose (_("return %1"), bitslot);
state.property("name")->set_value (name);
XMLNode* io = state.child ("IO");
if (io) {
io->property("name")->set_value (name);
}
}
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