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/audio_port.h"
26 #include "ardour/buffer_set.h"
27 #include "ardour/io.h"
28 #include "ardour/meter.h"
29 #include "ardour/panner.h"
30 #include "ardour/port.h"
31 #include "ardour/return.h"
32 #include "ardour/session.h"
33 #include "ardour/mute_master.h"
34 #include "ardour/audioengine.h"
38 using namespace ARDOUR;
41 Return::Return (Session& s, bool internal)
42 : IOProcessor (s, (internal ? false : true), false,
43 string_compose (_("return %1"), (_bitslot = s.next_return_id()) + 1))
48 _amp.reset (new Amp (_session));
49 _meter.reset (new PeakMeter (_session));
54 _session.unmark_return_id (_bitslot);
58 Return::get_state(void)
64 Return::state(bool full)
66 XMLNode& node = IOProcessor::state(full);
68 node.add_property ("type", "return");
69 snprintf (buf, sizeof (buf), "%" PRIu32, _bitslot);
70 node.add_property ("bitslot", buf);
76 Return::set_state (const XMLNode& node, int version)
78 XMLNodeList nlist = node.children();
79 XMLNodeIterator niter;
80 const XMLProperty* prop;
81 const XMLNode* insert_node = &node;
83 /* Return has regular IO automation (gain, pan) */
85 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
86 if ((*niter)->name() == "IOProcessor") {
88 } else if ((*niter)->name() == X_("Automation")) {
89 // _io->set_automation_state (*(*niter), Evoral::Parameter(GainAutomation));
93 IOProcessor::set_state (*insert_node, version);
95 if ((prop = node.property ("bitslot")) == 0) {
96 _bitslot = _session.next_return_id();
98 _session.unmark_return_id (_bitslot);
99 sscanf (prop->value().c_str(), "%" PRIu32, &_bitslot);
100 _session.mark_return_id (_bitslot);
107 Return::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool)
109 if ((!_active && !_pending_active) || _input->n_ports() == ChanCount::ZERO) {
113 _input->collect_input (bufs, nframes, _configured_input);
114 bufs.set_count(_configured_output);
116 // Can't automate gain for sends or returns yet because we need different buffers
117 // so that we don't overwrite the main automation data for the route amp
118 // _amp->setup_gain_automation (start_frame, end_frame, nframes);
119 _amp->run (bufs, start_frame, end_frame, nframes, true);
122 if (_amp->gain_control()->get_value() == 0) {
125 _meter->run (bufs, start_frame, end_frame, nframes, true);
129 _active = _pending_active;
133 Return::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
135 out = in + _input->n_ports();
140 Return::configure_io (ChanCount in, ChanCount out)
142 if (out != in + _input->n_ports()) {
146 // Ensure there are enough buffers (since we add some)
147 if (_session.get_scratch_buffers(in).count() < out) {
148 Glib::Mutex::Lock em (_session.engine().process_lock());
149 IO::PortCountChanged(out);
152 Processor::configure_io(in, out);
157 /** Set up the XML description of a return so that its name is unique.
158 * @param state XML return state.
159 * @param session Session.
162 Return::make_unique (XMLNode &state, Session &session)
164 uint32_t const bitslot = session.next_return_id() + 1;
167 snprintf (buf, sizeof (buf), "%" PRIu32, bitslot);
168 state.property("bitslot")->set_value (buf);
170 std::string const name = string_compose (_("return %1"), bitslot);
172 state.property("name")->set_value (name);
174 XMLNode* io = state.child ("IO");
176 io->property("name")->set_value (name);