158 lines
4.3 KiB
C++
158 lines
4.3 KiB
C++
/*
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* Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
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* Copyright (C) 2009-2012 David Robillard <d@drobilla.net>
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* Copyright (C) 2009-2017 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2013-2017 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <algorithm>
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#include "pbd/xml++.h"
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#include "ardour/amp.h"
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#include "ardour/audioengine.h"
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#include "ardour/buffer_set.h"
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#include "ardour/gain_control.h"
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#include "ardour/io.h"
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#include "ardour/meter.h"
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#include "ardour/return.h"
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#include "ardour/session.h"
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#include "pbd/i18n.h"
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using namespace ARDOUR;
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using namespace PBD;
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std::string
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Return::name_and_id_new_return (Session& s, uint32_t& bitslot)
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{
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bitslot = s.next_return_id();
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return string_compose (_("return %1"), bitslot + 1);
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}
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Return::Return (Session& s, bool internal)
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: IOProcessor (s, (internal ? false : true), false, name_and_id_new_return (s, _bitslot), "", DataType::AUDIO, true)
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, _metering (false)
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{
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/* never muted */
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std::shared_ptr<AutomationList> gl (new AutomationList (Evoral::Parameter (GainAutomation), *this));
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_gain_control = std::shared_ptr<GainControl> (new GainControl (_session, Evoral::Parameter (GainAutomation), gl));
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add_control (_gain_control);
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_amp.reset (new Amp (_session, X_("Fader"), _gain_control, true));
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_meter.reset (new PeakMeter (_session, name()));
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}
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Return::~Return ()
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{
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_session.unmark_return_id (_bitslot);
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}
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XMLNode&
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Return::state() const
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{
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XMLNode& node = IOProcessor::state ();
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node.set_property ("type", "return");
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node.set_property ("bitslot", _bitslot);
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return node;
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}
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int
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Return::set_state (const XMLNode& node, int version)
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{
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XMLNodeList nlist = node.children();
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XMLNodeIterator niter;
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const XMLNode* insert_node = &node;
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/* Return has regular IO automation (gain, pan) */
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for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
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if ((*niter)->name() == "IOProcessor") {
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insert_node = *niter;
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} else if ((*niter)->name() == X_("Automation")) {
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// _io->set_automation_state (*(*niter), Evoral::Parameter(GainAutomation));
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}
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}
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IOProcessor::set_state (*insert_node, version);
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if (!node.property ("ignore-bitslot")) {
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uint32_t bitslot;
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if (node.get_property ("bitslot", bitslot)) {
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_session.unmark_return_id (_bitslot);
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_bitslot = bitslot;
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_session.mark_return_id (_bitslot);
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} else {
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_bitslot = _session.next_return_id();
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}
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}
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return 0;
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}
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void
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Return::run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_sample, double speed, pframes_t nframes, bool)
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{
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if (!check_active() || (_input->n_ports() == ChanCount::ZERO)) {
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return;
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}
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_input->collect_input (bufs, nframes, _configured_input);
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bufs.set_count(_configured_output);
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// Can't automate gain for sends or returns yet because we need different buffers
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// so that we don't overwrite the main automation data for the route amp
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// _amp->setup_gain_automation (start_sample, end_sample, nframes);
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_amp->run (bufs, start_sample, end_sample, speed, nframes, true);
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if (_metering) {
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if (_amp->gain_control()->get_value() == 0) {
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_meter->reset();
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} else {
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_meter->run (bufs, start_sample, end_sample, speed, nframes, true);
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}
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}
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}
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bool
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Return::can_support_io_configuration (const ChanCount& in, ChanCount& out)
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{
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out = in + _input->n_ports();
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return true;
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}
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bool
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Return::configure_io (ChanCount in, ChanCount out)
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{
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if (out != in + _input->n_ports()) {
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return false;
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}
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// Ensure there are enough buffers (since we add some)
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if (_session.get_scratch_buffers(in).count() < out) {
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Glib::Threads::Mutex::Lock em (_session.engine().process_lock());
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IO::PortCountChanged(out);
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}
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Processor::configure_io(in, out);
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return true;
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}
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