308 lines
7.6 KiB
C++
308 lines
7.6 KiB
C++
/*
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Copyright (C) 2000,2007 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <string>
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#include "pbd/xml++.h"
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#include "ardour/audio_port.h"
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#include "ardour/audioengine.h"
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#include "ardour/delivery.h"
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#include "ardour/io.h"
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#include "ardour/mtdm.h"
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#include "ardour/port_insert.h"
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#include "ardour/session.h"
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#include "ardour/types.h"
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#include "i18n.h"
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using namespace std;
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using namespace ARDOUR;
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using namespace PBD;
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string
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PortInsert::name_and_id_new_insert (Session& s, uint32_t& bitslot)
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{
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bitslot = s.next_insert_id ();
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return string_compose (_("insert %1"), bitslot+ 1);
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}
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PortInsert::PortInsert (Session& s, boost::shared_ptr<Pannable> pannable, boost::shared_ptr<MuteMaster> mm)
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: IOProcessor (s, true, true, name_and_id_new_insert (s, _bitslot), "", DataType::AUDIO, true)
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, _out (new Delivery (s, _output, pannable, mm, _name, Delivery::Insert))
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{
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_mtdm = 0;
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_latency_detect = false;
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_latency_flush_frames = 0;
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_measured_latency = 0;
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}
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PortInsert::~PortInsert ()
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{
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_session.unmark_insert_id (_bitslot);
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delete _mtdm;
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}
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void
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PortInsert::set_pre_fader (bool p)
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{
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Processor::set_pre_fader (p);
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_out->set_pre_fader (p);
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}
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void
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PortInsert::start_latency_detection ()
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{
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delete _mtdm;
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_mtdm = new MTDM (_session.frame_rate());
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_latency_flush_frames = 0;
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_latency_detect = true;
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_measured_latency = 0;
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}
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void
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PortInsert::stop_latency_detection ()
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{
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_latency_flush_frames = signal_latency() + _session.engine().samples_per_cycle();
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_latency_detect = false;
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}
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void
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PortInsert::set_measured_latency (framecnt_t n)
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{
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_measured_latency = n;
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}
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framecnt_t
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PortInsert::latency() const
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{
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/* because we deliver and collect within the same cycle,
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all I/O is necessarily delayed by at least frames_per_cycle().
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if the return port for insert has its own latency, we
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need to take that into account too.
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*/
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if (_measured_latency == 0) {
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return _session.engine().samples_per_cycle() + _input->latency();
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} else {
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return _measured_latency;
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}
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}
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void
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PortInsert::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool)
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{
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if (_output->n_ports().n_total() == 0) {
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return;
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}
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if (_latency_detect) {
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if (_input->n_ports().n_audio() != 0) {
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AudioBuffer& outbuf (_output->ports().nth_audio_port(0)->get_audio_buffer (nframes));
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Sample* in = _input->ports().nth_audio_port(0)->get_audio_buffer (nframes).data();
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Sample* out = outbuf.data();
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_mtdm->process (nframes, in, out);
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outbuf.set_written (true);
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}
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return;
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} else if (_latency_flush_frames) {
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/* wait for the entire input buffer to drain before picking up input again so that we can't
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hear the remnants of whatever MTDM pumped into the pipeline.
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*/
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silence (nframes);
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if (_latency_flush_frames > nframes) {
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_latency_flush_frames -= nframes;
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} else {
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_latency_flush_frames = 0;
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}
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return;
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}
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if (!_active && !_pending_active) {
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/* deliver silence */
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silence (nframes);
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goto out;
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}
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_out->run (bufs, start_frame, end_frame, nframes, true);
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_input->collect_input (bufs, nframes, ChanCount::ZERO);
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out:
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_active = _pending_active;
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}
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XMLNode&
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PortInsert::get_state(void)
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{
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return state (true);
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}
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XMLNode&
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PortInsert::state (bool full)
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{
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XMLNode& node = IOProcessor::state(full);
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char buf[32];
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node.add_property ("type", "port");
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snprintf (buf, sizeof (buf), "%" PRIu32, _bitslot);
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node.add_property ("bitslot", buf);
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snprintf (buf, sizeof (buf), "%" PRId64, _measured_latency);
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node.add_property("latency", buf);
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snprintf (buf, sizeof (buf), "%u", _session.get_block_size());
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node.add_property("block_size", buf);
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return node;
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}
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int
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PortInsert::set_state (const XMLNode& node, int version)
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{
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XMLNodeList nlist = node.children();
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XMLNodeIterator niter;
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XMLPropertyList plist;
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const XMLProperty *prop;
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const XMLNode* insert_node = &node;
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// legacy sessions: search for child Redirect node
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for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
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if ((*niter)->name() == "Redirect") {
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insert_node = *niter;
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break;
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}
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}
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IOProcessor::set_state (*insert_node, version);
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if ((prop = node.property ("type")) == 0) {
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error << _("XML node describing port insert is missing the `type' field") << endmsg;
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return -1;
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}
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if (prop->value() != "port") {
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error << _("non-port insert XML used for port plugin insert") << endmsg;
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return -1;
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}
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uint32_t blocksize = 0;
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if ((prop = node.property ("block_size")) != 0) {
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sscanf (prop->value().c_str(), "%u", &blocksize);
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}
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//if the jack period is the same as when the value was saved, we can recall our latency..
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if ( (_session.get_block_size() == blocksize) && (prop = node.property ("latency")) != 0) {
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uint32_t latency = 0;
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sscanf (prop->value().c_str(), "%u", &latency);
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_measured_latency = latency;
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}
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if (!node.property ("ignore-bitslot")) {
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if ((prop = node.property ("bitslot")) == 0) {
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_bitslot = _session.next_insert_id();
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} else {
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_session.unmark_insert_id (_bitslot);
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sscanf (prop->value().c_str(), "%" PRIu32, &_bitslot);
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_session.mark_insert_id (_bitslot);
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}
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}
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return 0;
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}
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ARDOUR::framecnt_t
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PortInsert::signal_latency() const
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{
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/* because we deliver and collect within the same cycle,
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all I/O is necessarily delayed by at least frames_per_cycle().
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if the return port for insert has its own latency, we
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need to take that into account too.
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*/
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if (_measured_latency == 0) {
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return _session.engine().samples_per_cycle() + _input->signal_latency();
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} else {
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return _measured_latency;
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}
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}
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/** Caller must hold process lock */
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bool
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PortInsert::configure_io (ChanCount in, ChanCount out)
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{
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#ifndef PLATFORM_WINDOWS
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assert (!AudioEngine::instance()->process_lock().trylock());
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#endif
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/* for an insert, processor input corresponds to IO output, and vice versa */
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if (_input->ensure_io (in, false, this) != 0) {
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return false;
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}
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if (_output->ensure_io (out, false, this) != 0) {
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return false;
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}
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return Processor::configure_io (in, out);
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}
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bool
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PortInsert::can_support_io_configuration (const ChanCount& in, ChanCount& out)
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{
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out = in;
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return true;
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}
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bool
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PortInsert::set_name (const std::string& name)
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{
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bool ret = Processor::set_name (name);
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ret = (ret && _input->set_name (name) && _output->set_name (name));
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return ret;
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}
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void
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PortInsert::activate ()
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{
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IOProcessor::activate ();
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_out->activate ();
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}
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void
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PortInsert::deactivate ()
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{
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IOProcessor::deactivate ();
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_out->deactivate ();
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}
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