2 Copyright (C) 2000,2007 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.
23 #include "pbd/failed_constructor.h"
24 #include "pbd/xml++.h"
26 #include "ardour/audioengine.h"
27 #include "ardour/audio_port.h"
28 #include "ardour/buffer_set.h"
29 #include "ardour/delivery.h"
30 #include "ardour/mtdm.h"
31 #include "ardour/plugin.h"
32 #include "ardour/port.h"
33 #include "ardour/port_insert.h"
34 #include "ardour/route.h"
35 #include "ardour/session.h"
36 #include "ardour/types.h"
41 using namespace ARDOUR;
44 PortInsert::PortInsert (Session& s, boost::shared_ptr<MuteMaster> mm)
45 : IOProcessor (s, true, true, string_compose (_("insert %1"), (bitslot = s.next_insert_id()) + 1), "")
46 , _out (new Delivery (s, _output, mm, _name, Delivery::Insert))
49 _latency_detect = false;
50 _latency_flush_frames = false;
51 _measured_latency = 0;
53 ProcessorCreated (this); /* EMIT SIGNAL */
56 PortInsert::PortInsert (Session& s, boost::shared_ptr<MuteMaster> mm, const XMLNode& node)
57 : IOProcessor (s, true, true, "unnamed port insert")
58 , _out (new Delivery (s, _output, mm, _name, Delivery::Insert))
62 _latency_detect = false;
63 _latency_flush_frames = false;
64 _measured_latency = 0;
66 if (set_state (node, Stateful::loading_state_version)) {
67 throw failed_constructor();
70 ProcessorCreated (this); /* EMIT SIGNAL */
73 PortInsert::~PortInsert ()
79 PortInsert::start_latency_detection ()
86 _latency_flush_frames = false;
87 _latency_detect = true;
88 _measured_latency = 0;
92 PortInsert::stop_latency_detection ()
94 _latency_flush_frames = signal_latency() + _session.engine().frames_per_cycle();
95 _latency_detect = false;
99 PortInsert::set_measured_latency (nframes_t n)
101 _measured_latency = n;
105 PortInsert::run (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes, bool)
107 if (_output->n_ports().n_total() == 0) {
111 if (_latency_detect) {
113 if (_input->n_ports().n_audio() != 0) {
115 AudioBuffer& outbuf (_output->ports().nth_audio_port(0)->get_audio_buffer (nframes));
116 Sample* in = _input->ports().nth_audio_port(0)->get_audio_buffer (nframes).data();
117 Sample* out = outbuf.data();
119 _mtdm->process (nframes, in, out);
121 outbuf.is_silent (false);
126 } else if (_latency_flush_frames) {
128 /* wait for the entire input buffer to drain before picking up input again so that we can't
129 hear the remnants of whatever MTDM pumped into the pipeline.
134 if (_latency_flush_frames > nframes) {
135 _latency_flush_frames -= nframes;
137 _latency_flush_frames = 0;
143 if (!_active && !_pending_active) {
144 /* deliver silence */
149 _out->run (bufs, start_frame, end_frame, nframes, true);
150 _input->collect_input (bufs, nframes, ChanCount::ZERO);
153 _active = _pending_active;
157 PortInsert::get_state(void)
163 PortInsert::state (bool full)
165 XMLNode& node = Processor::state(full);
167 node.add_property ("type", "port");
168 snprintf (buf, sizeof (buf), "%" PRIu32, bitslot);
169 node.add_property ("bitslot", buf);
175 PortInsert::set_state (const XMLNode& node, int version)
177 XMLNodeList nlist = node.children();
178 XMLNodeIterator niter;
179 XMLPropertyList plist;
180 const XMLProperty *prop;
182 if ((prop = node.property ("type")) == 0) {
183 error << _("XML node describing port insert is missing the `type' field") << endmsg;
187 if (prop->value() != "port") {
188 error << _("non-port insert XML used for port plugin insert") << endmsg;
192 if ((prop = node.property ("bitslot")) == 0) {
193 bitslot = _session.next_insert_id();
195 sscanf (prop->value().c_str(), "%" PRIu32, &bitslot);
196 _session.mark_insert_id (bitslot);
199 const XMLNode* insert_node = &node;
201 // legacy sessions: search for child IOProcessor node
202 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
203 if ((*niter)->name() == "IOProcessor") {
204 insert_node = *niter;
209 Processor::set_state (*insert_node, version);
215 PortInsert::signal_latency() const
217 /* because we deliver and collect within the same cycle,
218 all I/O is necessarily delayed by at least frames_per_cycle().
220 if the return port for insert has its own latency, we
221 need to take that into account too.
224 if (_measured_latency == 0) {
225 return _session.engine().frames_per_cycle() + _input->signal_latency();
227 return _measured_latency;
232 PortInsert::configure_io (ChanCount in, ChanCount out)
234 /* for an insert, processor input corresponds to IO output, and vice versa */
236 if (_input->ensure_io (in, false, this) != 0) {
240 if (_output->ensure_io (out, false, this) != 0) {
244 return Processor::configure_io (in, out);
248 PortInsert::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
255 PortInsert::set_name (const std::string& name)
257 bool ret = Processor::set_name (name);
259 ret = (ret && _input->set_name (name) && _output->set_name (name));
265 PortInsert::activate ()
267 IOProcessor::activate ();
273 PortInsert::deactivate ()
275 IOProcessor::deactivate ();