2 Copyright (C) 2000 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include "pbd/xml++.h"
24 #include "ardour/amp.h"
25 #include "ardour/audioengine.h"
26 #include "ardour/buffer_set.h"
27 #include "ardour/gain_control.h"
28 #include "ardour/io.h"
29 #include "ardour/meter.h"
30 #include "ardour/return.h"
31 #include "ardour/session.h"
35 using namespace ARDOUR;
39 Return::name_and_id_new_return (Session& s, uint32_t& bitslot)
41 bitslot = s.next_return_id();
42 return string_compose (_("return %1"), bitslot + 1);
46 Return::Return (Session& s, bool internal)
47 : IOProcessor (s, (internal ? false : true), false,
48 name_and_id_new_return (s, _bitslot))
53 boost::shared_ptr<AutomationList> gl (new AutomationList (Evoral::Parameter (GainAutomation)));
54 _gain_control = boost::shared_ptr<GainControl> (new GainControl (_session, Evoral::Parameter (GainAutomation), gl));
55 add_control (_gain_control);
57 _amp.reset (new Amp (_session, X_("Fader"), _gain_control, true));
58 _meter.reset (new PeakMeter (_session, name()));
63 _session.unmark_return_id (_bitslot);
67 Return::get_state(void)
73 Return::state(bool full)
75 XMLNode& node = IOProcessor::state(full);
77 node.add_property ("type", "return");
78 snprintf (buf, sizeof (buf), "%" PRIu32, _bitslot);
79 node.add_property ("bitslot", buf);
85 Return::set_state (const XMLNode& node, int version)
87 XMLNodeList nlist = node.children();
88 XMLNodeIterator niter;
89 XMLProperty const * prop;
90 const XMLNode* insert_node = &node;
92 /* Return has regular IO automation (gain, pan) */
94 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
95 if ((*niter)->name() == "IOProcessor") {
97 } else if ((*niter)->name() == X_("Automation")) {
98 // _io->set_automation_state (*(*niter), Evoral::Parameter(GainAutomation));
102 IOProcessor::set_state (*insert_node, version);
104 if (!node.property ("ignore-bitslot")) {
105 if ((prop = node.property ("bitslot")) == 0) {
106 _bitslot = _session.next_return_id();
108 _session.unmark_return_id (_bitslot);
109 sscanf (prop->value().c_str(), "%" PRIu32, &_bitslot);
110 _session.mark_return_id (_bitslot);
118 Return::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool)
120 if ((!_active && !_pending_active) || _input->n_ports() == ChanCount::ZERO) {
124 _input->collect_input (bufs, nframes, _configured_input);
125 bufs.set_count(_configured_output);
127 // Can't automate gain for sends or returns yet because we need different buffers
128 // so that we don't overwrite the main automation data for the route amp
129 // _amp->setup_gain_automation (start_frame, end_frame, nframes);
130 _amp->run (bufs, start_frame, end_frame, nframes, true);
133 if (_amp->gain_control()->get_value() == 0) {
136 _meter->run (bufs, start_frame, end_frame, nframes, true);
140 _active = _pending_active;
144 Return::can_support_io_configuration (const ChanCount& in, ChanCount& out)
146 out = in + _input->n_ports();
151 Return::configure_io (ChanCount in, ChanCount out)
153 if (out != in + _input->n_ports()) {
157 // Ensure there are enough buffers (since we add some)
158 if (_session.get_scratch_buffers(in).count() < out) {
159 Glib::Threads::Mutex::Lock em (_session.engine().process_lock());
160 IO::PortCountChanged(out);
163 Processor::configure_io(in, out);