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livetrax/libs/ardour/return.cc
Robin Gareus e31f5d9998 Clean up State API:
* Processor implement get_state(), classes derived from Processor
  implement protected ::state() -- as documented in processor.h
* likewise for Route, Track: make ::state() a protected interface
* removal of "full_state", use explicit "template_save"
* use RAII/Unwind to skip saving automation-state
2017-10-04 00:54:55 +02:00

159 lines
4.1 KiB
C++

/*
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/amp.h"
#include "ardour/audioengine.h"
#include "ardour/buffer_set.h"
#include "ardour/gain_control.h"
#include "ardour/io.h"
#include "ardour/meter.h"
#include "ardour/return.h"
#include "ardour/session.h"
#include "pbd/i18n.h"
using namespace ARDOUR;
using namespace PBD;
std::string
Return::name_and_id_new_return (Session& s, uint32_t& bitslot)
{
bitslot = s.next_return_id();
return string_compose (_("return %1"), bitslot + 1);
}
Return::Return (Session& s, bool internal)
: IOProcessor (s, (internal ? false : true), false,
name_and_id_new_return (s, _bitslot))
, _metering (false)
{
/* never muted */
boost::shared_ptr<AutomationList> gl (new AutomationList (Evoral::Parameter (GainAutomation)));
_gain_control = boost::shared_ptr<GainControl> (new GainControl (_session, Evoral::Parameter (GainAutomation), gl));
add_control (_gain_control);
_amp.reset (new Amp (_session, X_("Fader"), _gain_control, true));
_meter.reset (new PeakMeter (_session, name()));
}
Return::~Return ()
{
_session.unmark_return_id (_bitslot);
}
XMLNode&
Return::state()
{
XMLNode& node = IOProcessor::state ();
node.set_property ("type", "return");
node.set_property ("bitslot", _bitslot);
return node;
}
int
Return::set_state (const XMLNode& node, int version)
{
XMLNodeList nlist = node.children();
XMLNodeIterator niter;
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, version);
if (!node.property ("ignore-bitslot")) {
uint32_t bitslot;
if (node.get_property ("bitslot", bitslot)) {
_session.unmark_return_id (_bitslot);
_bitslot = bitslot;
_session.mark_return_id (_bitslot);
} else {
_bitslot = _session.next_return_id();
}
}
return 0;
}
void
Return::run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_sample, double speed, pframes_t nframes, bool)
{
if ((!_active && !_pending_active) || _input->n_ports() == ChanCount::ZERO) {
return;
}
_input->collect_input (bufs, nframes, _configured_input);
bufs.set_count(_configured_output);
// Can't automate gain for sends or returns yet because we need different buffers
// so that we don't overwrite the main automation data for the route amp
// _amp->setup_gain_automation (start_sample, end_sample, nframes);
_amp->run (bufs, start_sample, end_sample, speed, nframes, true);
if (_metering) {
if (_amp->gain_control()->get_value() == 0) {
_meter->reset();
} else {
_meter->run (bufs, start_sample, end_sample, speed, nframes, true);
}
}
_active = _pending_active;
}
bool
Return::can_support_io_configuration (const ChanCount& in, ChanCount& out)
{
out = in + _input->n_ports();
return true;
}
bool
Return::configure_io (ChanCount in, ChanCount out)
{
if (out != in + _input->n_ports()) {
return false;
}
// Ensure there are enough buffers (since we add some)
if (_session.get_scratch_buffers(in).count() < out) {
Glib::Threads::Mutex::Lock em (_session.engine().process_lock());
IO::PortCountChanged(out);
}
Processor::configure_io(in, out);
return true;
}