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/send.h>
25 #include <ardour/session.h>
26 #include <ardour/port.h>
27 #include <ardour/audio_port.h>
28 #include <ardour/buffer_set.h>
29 #include <ardour/meter.h>
30 #include <ardour/panner.h>
31 #include <ardour/io.h>
35 using namespace ARDOUR;
38 Send::Send (Session& s, Placement p)
39 : IOProcessor (s, string_compose (_("send %1"), (bitslot = s.next_send_id()) + 1), p)
42 ProcessorCreated (this); /* EMIT SIGNAL */
45 Send::Send (Session& s, const XMLNode& node)
46 : IOProcessor (s, "send", PreFader)
50 if (set_state (node)) {
51 throw failed_constructor();
54 ProcessorCreated (this); /* EMIT SIGNAL */
69 Send::state(bool full)
71 XMLNode& node = IOProcessor::state(full);
73 node.add_property ("type", "send");
74 snprintf (buf, sizeof (buf), "%" PRIu32, bitslot);
75 node.add_property ("bitslot", buf);
81 Send::set_state(const XMLNode& node)
83 XMLNodeList nlist = node.children();
84 XMLNodeIterator niter;
85 const XMLProperty* prop;
87 if ((prop = node.property ("bitslot")) == 0) {
88 bitslot = _session.next_send_id();
90 sscanf (prop->value().c_str(), "%" PRIu32, &bitslot);
91 _session.mark_send_id (bitslot);
94 const XMLNode* insert_node = &node;
96 /* Send has regular IO automation (gain, pan) */
98 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
99 if ((*niter)->name() == "IOProcessor") {
100 insert_node = *niter;
101 } else if ((*niter)->name() == X_("Automation")) {
102 // _io->set_automation_state (*(*niter), Evoral::Parameter(GainAutomation));
106 IOProcessor::set_state (*insert_node);
112 Send::run_in_place (BufferSet& bufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes, nframes_t offset)
116 // we have to copy the input, because IO::deliver_output may alter the buffers
117 // in-place, which a send must never do.
119 BufferSet& sendbufs = _session.get_mix_buffers(bufs.count());
121 sendbufs.read_from(bufs, nframes);
122 assert(sendbufs.count() == bufs.count());
124 _io->deliver_output (sendbufs, start_frame, end_frame, nframes, offset);
127 if (_io->effective_gain() == 0) {
128 _io->peak_meter().reset();
130 _io->peak_meter().run_in_place(_io->output_buffers(), start_frame, end_frame, nframes, offset);
135 _io->silence (nframes, offset);
138 _io->peak_meter().reset();
144 Send::set_metering (bool yn)
149 /* XXX possible thread hazard here */
150 _io->peak_meter().reset();
155 Send::can_support_io_configuration (const ChanCount& in, ChanCount& out_is_ignored) const
157 if (_io->input_maximum() == ChanCount::INFINITE && _io->output_maximum() == ChanCount::INFINITE) {
159 /* not configured yet */
161 return 1; /* we can support anything the first time we're asked */
165 /* the "input" config for a port insert corresponds to how
166 many output ports it will have.
169 if (_io->output_maximum() == in) {
178 Send::configure_io (ChanCount in, ChanCount out)
180 /* we're transparent no matter what. fight the power. */
186 _io->set_output_maximum (in);
187 _io->set_output_minimum (in);
188 _io->set_input_maximum (ChanCount::ZERO);
189 _io->set_input_minimum (ChanCount::ZERO);
191 if (_io->ensure_io (ChanCount::ZERO, in, false, this) != 0) {
195 Processor::configure_io(in, out);
202 Send::output_streams() const
204 // this method reflects the idea that from the perspective of the Route's ProcessorList,
205 // a send is just a passthrough. that doesn't match what the Send actually does with its
206 // data, but since what it does is invisible to the Route, it appears to be a passthrough.
208 return _configured_input;
212 Send::input_streams() const
214 return _configured_input;
219 Send::expect_inputs (const ChanCount& expected)
221 if (expected != expected_inputs) {
222 expected_inputs = expected;
223 _io->reset_panner ();
227 /** Set up the XML description of a send so that its name is unique.
228 * @param state XML send state.
229 * @param session Session.
232 Send::make_unique (XMLNode &state, Session &session)
234 uint32_t const bitslot = session.next_send_id() + 1;
237 snprintf (buf, sizeof (buf), "%" PRIu32, bitslot);
238 state.property("bitslot")->set_value (buf);
240 std::string const name = string_compose (_("send %1"), bitslot);
242 state.property("name")->set_value (name);
244 XMLNode* io = state.child ("IO");
246 io->property("name")->set_value (name);