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;
42 Return::name_and_id_new_return (Session& s, uint32_t& bitslot)
44 bitslot = s.next_return_id();
45 return string_compose (_("return %1"), bitslot + 1);
49 Return::Return (Session& s, bool internal)
50 : IOProcessor (s, (internal ? false : true), false,
51 name_and_id_new_return (s, _bitslot))
56 _amp.reset (new Amp (_session));
57 _meter.reset (new PeakMeter (_session));
60 Return::Return (Session& s, const std::string& name, uint32_t bslot, bool internal)
61 : IOProcessor (s, (internal ? false : true), false, name)
67 _amp.reset (new Amp (_session));
68 _meter.reset (new PeakMeter (_session));
73 _session.unmark_return_id (_bitslot);
77 Return::get_state(void)
83 Return::state(bool full)
85 XMLNode& node = IOProcessor::state(full);
87 node.add_property ("type", "return");
88 snprintf (buf, sizeof (buf), "%" PRIu32, _bitslot);
89 node.add_property ("bitslot", buf);
95 Return::set_state (const XMLNode& node, int version)
97 XMLNodeList nlist = node.children();
98 XMLNodeIterator niter;
99 const XMLProperty* prop;
100 const XMLNode* insert_node = &node;
102 /* Return has regular IO automation (gain, pan) */
104 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
105 if ((*niter)->name() == "IOProcessor") {
106 insert_node = *niter;
107 } else if ((*niter)->name() == X_("Automation")) {
108 // _io->set_automation_state (*(*niter), Evoral::Parameter(GainAutomation));
112 IOProcessor::set_state (*insert_node, version);
114 if (!node.property ("ignore-bitslot")) {
115 if ((prop = node.property ("bitslot")) == 0) {
116 _bitslot = _session.next_return_id();
118 _session.unmark_return_id (_bitslot);
119 sscanf (prop->value().c_str(), "%" PRIu32, &_bitslot);
120 _session.mark_return_id (_bitslot);
128 Return::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool)
130 if ((!_active && !_pending_active) || _input->n_ports() == ChanCount::ZERO) {
134 _input->collect_input (bufs, nframes, _configured_input);
135 bufs.set_count(_configured_output);
137 // Can't automate gain for sends or returns yet because we need different buffers
138 // so that we don't overwrite the main automation data for the route amp
139 // _amp->setup_gain_automation (start_frame, end_frame, nframes);
140 _amp->run (bufs, start_frame, end_frame, nframes, true);
143 if (_amp->gain_control()->get_value() == 0) {
146 _meter->run (bufs, start_frame, end_frame, nframes, true);
150 _active = _pending_active;
154 Return::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
156 out = in + _input->n_ports();
161 Return::configure_io (ChanCount in, ChanCount out)
163 if (out != in + _input->n_ports()) {
167 // Ensure there are enough buffers (since we add some)
168 if (_session.get_scratch_buffers(in).count() < out) {
169 Glib::Mutex::Lock em (_session.engine().process_lock());
170 IO::PortCountChanged(out);
173 Processor::configure_io(in, out);
178 /** Set up the XML description of a return so that we will not
179 * reset its name or bitslot during ::set_state()
180 * @param state XML return state.
183 Return::make_unique (XMLNode &state)
185 state.add_property ("ignore-bitslot", "1");
186 state.add_property ("ignore-name", "1");