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-rw-r--r--src/server/internals/BlockDelay.cpp89
-rw-r--r--src/server/internals/BlockDelay.hpp62
-rw-r--r--src/server/internals/Controller.cpp174
-rw-r--r--src/server/internals/Controller.hpp71
-rw-r--r--src/server/internals/Note.cpp420
-rw-r--r--src/server/internals/Note.hpp109
-rw-r--r--src/server/internals/Time.cpp78
-rw-r--r--src/server/internals/Time.hpp59
-rw-r--r--src/server/internals/Trigger.cpp187
-rw-r--r--src/server/internals/Trigger.hpp75
10 files changed, 1324 insertions, 0 deletions
diff --git a/src/server/internals/BlockDelay.cpp b/src/server/internals/BlockDelay.cpp
new file mode 100644
index 00000000..5c7ad147
--- /dev/null
+++ b/src/server/internals/BlockDelay.cpp
@@ -0,0 +1,89 @@
+/*
+ This file is part of Ingen.
+ Copyright 2007-2015 David Robillard <http://drobilla.net/>
+
+ Ingen is free software: you can redistribute it and/or modify it under the
+ terms of the GNU Affero General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or any later version.
+
+ Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU Affero General Public License for details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with Ingen. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <climits>
+
+#include <cmath>
+
+#include "ingen/URIs.hpp"
+#include "raul/Array.hpp"
+#include "raul/Maid.hpp"
+
+#include "Buffer.hpp"
+#include "InputPort.hpp"
+#include "InternalPlugin.hpp"
+#include "OutputPort.hpp"
+#include "RunContext.hpp"
+#include "internals/BlockDelay.hpp"
+
+namespace ingen {
+namespace server {
+namespace internals {
+
+InternalPlugin* BlockDelayNode::internal_plugin(URIs& uris) {
+ return new InternalPlugin(
+ uris, URI(NS_INTERNALS "BlockDelay"), Raul::Symbol("blockDelay"));
+}
+
+BlockDelayNode::BlockDelayNode(InternalPlugin* plugin,
+ BufferFactory& bufs,
+ const Raul::Symbol& symbol,
+ bool polyphonic,
+ GraphImpl* parent,
+ SampleRate srate)
+ : InternalBlock(plugin, symbol, polyphonic, parent, srate)
+{
+ const ingen::URIs& uris = bufs.uris();
+ _ports = bufs.maid().make_managed<Ports>(2);
+
+ _in_port = new InputPort(bufs, this, Raul::Symbol("in"), 0, 1,
+ PortType::AUDIO, 0, bufs.forge().make(0.0f));
+ _in_port->set_property(uris.lv2_name, bufs.forge().alloc("In"));
+ _ports->at(0) = _in_port;
+
+ _out_port = new OutputPort(bufs, this, Raul::Symbol("out"), 0, 1,
+ PortType::AUDIO, 0, bufs.forge().make(0.0f));
+ _out_port->set_property(uris.lv2_name, bufs.forge().alloc("Out"));
+ _ports->at(1) = _out_port;
+}
+
+BlockDelayNode::~BlockDelayNode()
+{
+ _buffer.reset();
+}
+
+void
+BlockDelayNode::activate(BufferFactory& bufs)
+{
+ _buffer = bufs.create(
+ bufs.uris().atom_Sound, 0, bufs.audio_buffer_size());
+
+ BlockImpl::activate(bufs);
+}
+
+void
+BlockDelayNode::run(RunContext& context)
+{
+ // Copy buffer from last cycle to output
+ _out_port->buffer(0)->copy(context, _buffer.get());
+
+ // Copy input from this cycle to buffer
+ _buffer->copy(context, _in_port->buffer(0).get());
+}
+
+} // namespace internals
+} // namespace server
+} // namespace ingen
diff --git a/src/server/internals/BlockDelay.hpp b/src/server/internals/BlockDelay.hpp
new file mode 100644
index 00000000..0e8fadce
--- /dev/null
+++ b/src/server/internals/BlockDelay.hpp
@@ -0,0 +1,62 @@
+/*
+ This file is part of Ingen.
+ Copyright 2007-2015 David Robillard <http://drobilla.net/>
+
+ Ingen is free software: you can redistribute it and/or modify it under the
+ terms of the GNU Affero General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or any later version.
+
+ Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU Affero General Public License for details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with Ingen. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_INTERNALS_BLOCKDELAY_HPP
+#define INGEN_INTERNALS_BLOCKDELAY_HPP
+
+#include "BufferRef.hpp"
+#include "InternalBlock.hpp"
+#include "types.hpp"
+
+namespace ingen {
+namespace server {
+
+class InputPort;
+class OutputPort;
+class InternalPlugin;
+class BufferFactory;
+
+namespace internals {
+
+class BlockDelayNode : public InternalBlock
+{
+public:
+ BlockDelayNode(InternalPlugin* plugin,
+ BufferFactory& bufs,
+ const Raul::Symbol& symbol,
+ bool polyphonic,
+ GraphImpl* parent,
+ SampleRate srate);
+
+ ~BlockDelayNode();
+
+ void activate(BufferFactory& bufs) override;
+
+ void run(RunContext& context) override;
+
+ static InternalPlugin* internal_plugin(URIs& uris);
+
+private:
+ InputPort* _in_port;
+ OutputPort* _out_port;
+ BufferRef _buffer;
+};
+
+} // namespace server
+} // namespace ingen
+} // namespace internals
+
+#endif // INGEN_INTERNALS_BLOCKDELAY_HPP
diff --git a/src/server/internals/Controller.cpp b/src/server/internals/Controller.cpp
new file mode 100644
index 00000000..4b5735d7
--- /dev/null
+++ b/src/server/internals/Controller.cpp
@@ -0,0 +1,174 @@
+/*
+ This file is part of Ingen.
+ Copyright 2007-2016 David Robillard <http://drobilla.net/>
+
+ Ingen is free software: you can redistribute it and/or modify it under the
+ terms of the GNU Affero General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or any later version.
+
+ Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU Affero General Public License for details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with Ingen. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <cmath>
+
+#include "ingen/URIs.hpp"
+#include "internals/Controller.hpp"
+#include "lv2/atom/util.h"
+#include "lv2/midi/midi.h"
+
+#include "Buffer.hpp"
+#include "Engine.hpp"
+#include "InputPort.hpp"
+#include "InternalPlugin.hpp"
+#include "OutputPort.hpp"
+#include "PostProcessor.hpp"
+#include "RunContext.hpp"
+#include "util.hpp"
+
+namespace ingen {
+namespace server {
+namespace internals {
+
+InternalPlugin* ControllerNode::internal_plugin(URIs& uris) {
+ return new InternalPlugin(
+ uris, URI(NS_INTERNALS "Controller"), Raul::Symbol("controller"));
+}
+
+ControllerNode::ControllerNode(InternalPlugin* plugin,
+ BufferFactory& bufs,
+ const Raul::Symbol& symbol,
+ bool polyphonic,
+ GraphImpl* parent,
+ SampleRate srate)
+ : InternalBlock(plugin, symbol, false, parent, srate)
+ , _learning(false)
+{
+ const ingen::URIs& uris = bufs.uris();
+ _ports = bufs.maid().make_managed<Ports>(7);
+
+ const Atom zero = bufs.forge().make(0.0f);
+ const Atom one = bufs.forge().make(1.0f);
+ const Atom atom_Float = bufs.forge().make_urid(URI(LV2_ATOM__Float));
+
+ _midi_in_port = new InputPort(bufs, this, Raul::Symbol("input"), 0, 1,
+ PortType::ATOM, uris.atom_Sequence, Atom());
+ _midi_in_port->set_property(uris.lv2_name, bufs.forge().alloc("Input"));
+ _midi_in_port->set_property(uris.atom_supports,
+ bufs.forge().make_urid(uris.midi_MidiEvent));
+ _ports->at(0) = _midi_in_port;
+
+ _midi_out_port = new OutputPort(bufs, this, Raul::Symbol("event"), 1, 1,
+ PortType::ATOM, uris.atom_Sequence, Atom());
+ _midi_out_port->set_property(uris.lv2_name, bufs.forge().alloc("Event"));
+ _midi_out_port->set_property(uris.atom_supports,
+ bufs.forge().make_urid(uris.midi_MidiEvent));
+ _ports->at(1) = _midi_out_port;
+
+ _param_port = new InputPort(bufs, this, Raul::Symbol("controller"), 2, 1,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _param_port->set_property(uris.atom_supports, atom_Float);
+ _param_port->set_property(uris.lv2_minimum, zero);
+ _param_port->set_property(uris.lv2_maximum, bufs.forge().make(127.0f));
+ _param_port->set_property(uris.lv2_portProperty, uris.lv2_integer);
+ _param_port->set_property(uris.lv2_name, bufs.forge().alloc("Controller"));
+ _ports->at(2) = _param_port;
+
+ _log_port = new InputPort(bufs, this, Raul::Symbol("logarithmic"), 3, 1,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _log_port->set_property(uris.atom_supports, atom_Float);
+ _log_port->set_property(uris.lv2_portProperty, uris.lv2_toggled);
+ _log_port->set_property(uris.lv2_name, bufs.forge().alloc("Logarithmic"));
+ _ports->at(3) = _log_port;
+
+ _min_port = new InputPort(bufs, this, Raul::Symbol("minimum"), 4, 1,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _min_port->set_property(uris.atom_supports, atom_Float);
+ _min_port->set_property(uris.lv2_name, bufs.forge().alloc("Minimum"));
+ _ports->at(4) = _min_port;
+
+ _max_port = new InputPort(bufs, this, Raul::Symbol("maximum"), 5, 1,
+ PortType::ATOM, uris.atom_Sequence, one);
+ _max_port->set_property(uris.atom_supports, atom_Float);
+ _max_port->set_property(uris.lv2_name, bufs.forge().alloc("Maximum"));
+ _ports->at(5) = _max_port;
+
+ _audio_port = new OutputPort(bufs, this, Raul::Symbol("output"), 6, 1,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _audio_port->set_property(uris.atom_supports, atom_Float);
+ _audio_port->set_property(uris.lv2_name, bufs.forge().alloc("Output"));
+ _ports->at(6) = _audio_port;
+}
+
+void
+ControllerNode::run(RunContext& context)
+{
+ const BufferRef midi_in = _midi_in_port->buffer(0);
+ LV2_Atom_Sequence* seq = midi_in->get<LV2_Atom_Sequence>();
+ const BufferRef midi_out = _midi_out_port->buffer(0);
+ LV2_ATOM_SEQUENCE_FOREACH(seq, ev) {
+ const uint8_t* buf = (const uint8_t*)LV2_ATOM_BODY(&ev->body);
+ if (ev->body.type == _midi_in_port->bufs().uris().midi_MidiEvent &&
+ ev->body.size >= 3 &&
+ lv2_midi_message_type(buf) == LV2_MIDI_MSG_CONTROLLER) {
+ if (control(context, buf[1], buf[2], ev->time.frames + context.start())) {
+ midi_out->append_event(ev->time.frames, &ev->body);
+ }
+ }
+ }
+}
+
+bool
+ControllerNode::control(RunContext& context, uint8_t control_num, uint8_t val, FrameTime time)
+{
+ assert(time >= context.start() && time <= context.end());
+ const uint32_t offset = time - context.start();
+
+ const Sample nval = (val / 127.0f); // normalized [0, 1]
+
+ if (_learning) {
+ _param_port->set_control_value(context, time, control_num);
+ _param_port->force_monitor_update();
+ _learning = false;
+ } else {
+ _param_port->update_values(offset, 0);
+ }
+
+ if (control_num != _param_port->buffer(0)->value_at(offset)) {
+ return false;
+ }
+
+ for (const auto& port : { _min_port, _max_port, _log_port }) {
+ port->update_values(offset, 0);
+ }
+
+ const Sample min_port_val = _min_port->buffer(0)->value_at(offset);
+ const Sample max_port_val = _max_port->buffer(0)->value_at(offset);
+ const Sample log_port_val = _log_port->buffer(0)->value_at(offset);
+
+ Sample scaled_value;
+ if (log_port_val > 0.0f) {
+ // haaaaack, stupid negatives and logarithms
+ Sample log_offset = 0;
+ if (min_port_val < 0) {
+ log_offset = fabs(min_port_val);
+ }
+ const Sample min = log(min_port_val + 1 + log_offset);
+ const Sample max = log(max_port_val + 1 + log_offset);
+ scaled_value = expf(nval * (max - min) + min) - 1 - log_offset;
+ } else {
+ scaled_value = ((nval) * (max_port_val - min_port_val)) + min_port_val;
+ }
+
+ _audio_port->set_control_value(context, time, scaled_value);
+
+ return true;
+}
+
+} // namespace internals
+} // namespace server
+} // namespace ingen
diff --git a/src/server/internals/Controller.hpp b/src/server/internals/Controller.hpp
new file mode 100644
index 00000000..d138e690
--- /dev/null
+++ b/src/server/internals/Controller.hpp
@@ -0,0 +1,71 @@
+/*
+ This file is part of Ingen.
+ Copyright 2007-2016 David Robillard <http://drobilla.net/>
+
+ Ingen is free software: you can redistribute it and/or modify it under the
+ terms of the GNU Affero General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or any later version.
+
+ Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU Affero General Public License for details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with Ingen. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_INTERNALS_CONTROLLER_HPP
+#define INGEN_INTERNALS_CONTROLLER_HPP
+
+#include "InternalBlock.hpp"
+
+namespace ingen {
+namespace server {
+
+class InputPort;
+class OutputPort;
+class InternalPlugin;
+
+namespace internals {
+
+/** MIDI control input block.
+ *
+ * Creating one of these nodes is how a user makes "MIDI Bindings". Note that
+ * this node will always be monophonic, the poly parameter is ignored.
+ *
+ * \ingroup engine
+ */
+class ControllerNode : public InternalBlock
+{
+public:
+ ControllerNode(InternalPlugin* plugin,
+ BufferFactory& bufs,
+ const Raul::Symbol& symbol,
+ bool polyphonic,
+ GraphImpl* parent,
+ SampleRate srate);
+
+ void run(RunContext& context) override;
+
+ bool control(RunContext& context, uint8_t control_num, uint8_t val, FrameTime time);
+
+ void learn() override { _learning = true; }
+
+ static InternalPlugin* internal_plugin(URIs& uris);
+
+private:
+ InputPort* _midi_in_port;
+ OutputPort* _midi_out_port;
+ InputPort* _param_port;
+ InputPort* _log_port;
+ InputPort* _min_port;
+ InputPort* _max_port;
+ OutputPort* _audio_port;
+ bool _learning;
+};
+
+} // namespace server
+} // namespace ingen
+} // namespace internals
+
+#endif // INGEN_INTERNALS_CONTROLLER_HPP
diff --git a/src/server/internals/Note.cpp b/src/server/internals/Note.cpp
new file mode 100644
index 00000000..9d39f345
--- /dev/null
+++ b/src/server/internals/Note.cpp
@@ -0,0 +1,420 @@
+/*
+ This file is part of Ingen.
+ Copyright 2007-2015 David Robillard <http://drobilla.net/>
+
+ Ingen is free software: you can redistribute it and/or modify it under the
+ terms of the GNU Affero General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or any later version.
+
+ Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU Affero General Public License for details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with Ingen. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <cmath>
+
+#include "ingen/URIs.hpp"
+#include "lv2/atom/util.h"
+#include "lv2/midi/midi.h"
+#include "raul/Array.hpp"
+#include "raul/Maid.hpp"
+
+#include "Buffer.hpp"
+#include "GraphImpl.hpp"
+#include "InputPort.hpp"
+#include "InternalPlugin.hpp"
+#include "OutputPort.hpp"
+#include "RunContext.hpp"
+#include "ingen_config.h"
+#include "internals/Note.hpp"
+#include "util.hpp"
+
+// #define NOTE_DEBUG 1
+
+namespace ingen {
+namespace server {
+namespace internals {
+
+InternalPlugin* NoteNode::internal_plugin(URIs& uris) {
+ return new InternalPlugin(
+ uris, URI(NS_INTERNALS "Note"), Raul::Symbol("note"));
+}
+
+NoteNode::NoteNode(InternalPlugin* plugin,
+ BufferFactory& bufs,
+ const Raul::Symbol& symbol,
+ bool polyphonic,
+ GraphImpl* parent,
+ SampleRate srate)
+ : InternalBlock(plugin, symbol, polyphonic, parent, srate)
+ , _voices(bufs.maid().make_managed<Voices>(_polyphony))
+ , _sustain(false)
+{
+ const ingen::URIs& uris = bufs.uris();
+ _ports = bufs.maid().make_managed<Ports>(8);
+
+ const Atom zero = bufs.forge().make(0.0f);
+ const Atom one = bufs.forge().make(1.0f);
+
+ _midi_in_port = new InputPort(bufs, this, Raul::Symbol("input"), 0, 1,
+ PortType::ATOM, uris.atom_Sequence, Atom());
+ _midi_in_port->set_property(uris.lv2_name, bufs.forge().alloc("Input"));
+ _midi_in_port->set_property(uris.atom_supports,
+ bufs.forge().make_urid(uris.midi_MidiEvent));
+ _ports->at(0) = _midi_in_port;
+
+ _freq_port = new OutputPort(bufs, this, Raul::Symbol("frequency"), 1, _polyphony,
+ PortType::ATOM, uris.atom_Sequence,
+ bufs.forge().make(440.0f));
+ _freq_port->set_property(uris.atom_supports, bufs.uris().atom_Float);
+ _freq_port->set_property(uris.lv2_name, bufs.forge().alloc("Frequency"));
+ _freq_port->set_property(uris.lv2_minimum, bufs.forge().make(16.0f));
+ _freq_port->set_property(uris.lv2_maximum, bufs.forge().make(25088.0f));
+ _ports->at(1) = _freq_port;
+
+ _num_port = new OutputPort(bufs, this, Raul::Symbol("number"), 1, _polyphony,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _num_port->set_property(uris.atom_supports, bufs.uris().atom_Float);
+ _num_port->set_property(uris.lv2_minimum, zero);
+ _num_port->set_property(uris.lv2_maximum, bufs.forge().make(127.0f));
+ _num_port->set_property(uris.lv2_portProperty, uris.lv2_integer);
+ _num_port->set_property(uris.lv2_name, bufs.forge().alloc("Number"));
+ _ports->at(2) = _num_port;
+
+ _vel_port = new OutputPort(bufs, this, Raul::Symbol("velocity"), 2, _polyphony,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _vel_port->set_property(uris.atom_supports, bufs.uris().atom_Float);
+ _vel_port->set_property(uris.lv2_minimum, zero);
+ _vel_port->set_property(uris.lv2_maximum, one);
+ _vel_port->set_property(uris.lv2_name, bufs.forge().alloc("Velocity"));
+ _ports->at(3) = _vel_port;
+
+ _gate_port = new OutputPort(bufs, this, Raul::Symbol("gate"), 3, _polyphony,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _gate_port->set_property(uris.atom_supports, bufs.uris().atom_Float);
+ _gate_port->set_property(uris.lv2_portProperty, uris.lv2_toggled);
+ _gate_port->set_property(uris.lv2_name, bufs.forge().alloc("Gate"));
+ _ports->at(4) = _gate_port;
+
+ _trig_port = new OutputPort(bufs, this, Raul::Symbol("trigger"), 4, _polyphony,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _trig_port->set_property(uris.atom_supports, bufs.uris().atom_Float);
+ _trig_port->set_property(uris.lv2_portProperty, uris.lv2_toggled);
+ _trig_port->set_property(uris.lv2_name, bufs.forge().alloc("Trigger"));
+ _ports->at(5) = _trig_port;
+
+ _bend_port = new OutputPort(bufs, this, Raul::Symbol("bend"), 5, _polyphony,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _bend_port->set_property(uris.atom_supports, bufs.uris().atom_Float);
+ _bend_port->set_property(uris.lv2_name, bufs.forge().alloc("Bender"));
+ _bend_port->set_property(uris.lv2_default, zero);
+ _bend_port->set_property(uris.lv2_minimum, bufs.forge().make(-1.0f));
+ _bend_port->set_property(uris.lv2_maximum, one);
+ _ports->at(6) = _bend_port;
+
+ _pressure_port = new OutputPort(bufs, this, Raul::Symbol("pressure"), 6, _polyphony,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _pressure_port->set_property(uris.atom_supports, bufs.uris().atom_Float);
+ _pressure_port->set_property(uris.lv2_name, bufs.forge().alloc("Pressure"));
+ _pressure_port->set_property(uris.lv2_default, zero);
+ _pressure_port->set_property(uris.lv2_minimum, zero);
+ _pressure_port->set_property(uris.lv2_maximum, one);
+ _ports->at(7) = _pressure_port;
+}
+
+bool
+NoteNode::prepare_poly(BufferFactory& bufs, uint32_t poly)
+{
+ if (!_polyphonic) {
+ return true;
+ }
+
+ BlockImpl::prepare_poly(bufs, poly);
+
+ if (_prepared_voices && poly <= _prepared_voices->size()) {
+ return true;
+ }
+
+ _prepared_voices = bufs.maid().make_managed<Voices>(
+ poly, *_voices, Voice());
+
+ return true;
+}
+
+bool
+NoteNode::apply_poly(RunContext& context, uint32_t poly)
+{
+ if (!BlockImpl::apply_poly(context, poly)) {
+ return false;
+ }
+
+ if (_prepared_voices) {
+ assert(_polyphony <= _prepared_voices->size());
+ _voices = std::move(_prepared_voices);
+ }
+ assert(_polyphony <= _voices->size());
+
+ return true;
+}
+
+void
+NoteNode::run(RunContext& context)
+{
+ Buffer* const midi_in = _midi_in_port->buffer(0).get();
+ LV2_Atom_Sequence* seq = midi_in->get<LV2_Atom_Sequence>();
+ LV2_ATOM_SEQUENCE_FOREACH(seq, ev) {
+ const uint8_t* buf = (const uint8_t*)LV2_ATOM_BODY_CONST(&ev->body);
+ const FrameTime time = context.start() + (FrameTime)ev->time.frames;
+ if (ev->body.type == _midi_in_port->bufs().uris().midi_MidiEvent &&
+ ev->body.size >= 3) {
+ switch (lv2_midi_message_type(buf)) {
+ case LV2_MIDI_MSG_NOTE_ON:
+ if (buf[2] == 0) {
+ note_off(context, buf[1], time);
+ } else {
+ note_on(context, buf[1], buf[2], time);
+ }
+ break;
+ case LV2_MIDI_MSG_NOTE_OFF:
+ note_off(context, buf[1], time);
+ break;
+ case LV2_MIDI_MSG_CONTROLLER:
+ switch (buf[1]) {
+ case LV2_MIDI_CTL_ALL_NOTES_OFF:
+ case LV2_MIDI_CTL_ALL_SOUNDS_OFF:
+ all_notes_off(context, time);
+ break;
+ case LV2_MIDI_CTL_SUSTAIN:
+ if (buf[2] > 63) {
+ sustain_on(context, time);
+ } else {
+ sustain_off(context, time);
+ }
+ break;
+ }
+ break;
+ case LV2_MIDI_MSG_BENDER:
+ bend(context, time, (((((uint16_t)buf[2] << 7) | buf[1]) - 8192.0f)
+ / 8192.0f));
+ break;
+ case LV2_MIDI_MSG_CHANNEL_PRESSURE:
+ channel_pressure(context, time, buf[1] / 127.0f);
+ break;
+ case LV2_MIDI_MSG_NOTE_PRESSURE:
+ note_pressure(context, time, buf[1], buf[2] / 127.0f);
+ break;
+ default:
+ break;
+ }
+ }
+ }
+}
+
+static inline float
+note_to_freq(uint8_t num)
+{
+ static const float A4 = 440.0f;
+ return A4 * powf(2.0f, (float)(num - 57.0f) / 12.0f);
+}
+
+void
+NoteNode::note_on(RunContext& context, uint8_t note_num, uint8_t velocity, FrameTime time)
+{
+ assert(time >= context.start() && time <= context.end());
+ assert(note_num <= 127);
+
+ Key* key = &_keys[note_num];
+ Voice* voice = nullptr;
+ uint32_t voice_num = 0;
+
+ if (key->state != Key::State::OFF) {
+ return;
+ }
+
+ // Look for free voices
+ for (uint32_t i=0; i < _polyphony; ++i) {
+ if ((*_voices)[i].state == Voice::State::FREE) {
+ voice = &(*_voices)[i];
+ voice_num = i;
+ break;
+ }
+ }
+
+ // If we didn't find a free one, steal the oldest
+ if (voice == nullptr) {
+ voice_num = 0;
+ voice = &(*_voices)[0];
+ FrameTime oldest_time = (*_voices)[0].time;
+ for (uint32_t i=1; i < _polyphony; ++i) {
+ if ((*_voices)[i].time < oldest_time) {
+ voice = &(*_voices)[i];
+ voice_num = i;
+ oldest_time = voice->time;
+ }
+ }
+ }
+ assert(voice != nullptr);
+ assert(voice == &(*_voices)[voice_num]);
+
+ // Update stolen key, if applicable
+ if (voice->state == Voice::State::ACTIVE) {
+ assert(_keys[voice->note].state == Key::State::ON_ASSIGNED);
+ assert(_keys[voice->note].voice == voice_num);
+ _keys[voice->note].state = Key::State::ON_UNASSIGNED;
+ }
+
+ // Store key information for later reallocation on note off
+ key->state = Key::State::ON_ASSIGNED;
+ key->voice = voice_num;
+ key->time = time;
+
+ // Check if we just triggered this voice at the same time
+ // (Double note-on at the same sample on the same voice)
+ const bool double_trigger = (voice->state == Voice::State::ACTIVE &&
+ voice->time == time);
+
+ // Trigger voice
+ voice->state = Voice::State::ACTIVE;
+ voice->note = note_num;
+ voice->time = time;
+
+ assert(_keys[voice->note].state == Key::State::ON_ASSIGNED);
+ assert(_keys[voice->note].voice == voice_num);
+
+ _freq_port->set_voice_value(context, voice_num, time, note_to_freq(note_num));
+ _num_port->set_voice_value(context, voice_num, time, (float)note_num);
+ _vel_port->set_voice_value(context, voice_num, time, velocity / 127.0f);
+ _gate_port->set_voice_value(context, voice_num, time, 1.0f);
+ if (!double_trigger) {
+ _trig_port->set_voice_value(context, voice_num, time, 1.0f);
+ _trig_port->set_voice_value(context, voice_num, time + 1, 0.0f);
+ }
+
+ assert(key->state == Key::State::ON_ASSIGNED);
+ assert(voice->state == Voice::State::ACTIVE);
+ assert(key->voice == voice_num);
+ assert((*_voices)[key->voice].note == note_num);
+}
+
+void
+NoteNode::note_off(RunContext& context, uint8_t note_num, FrameTime time)
+{
+ assert(time >= context.start() && time <= context.end());
+
+ Key* key = &_keys[note_num];
+
+ if (key->state == Key::State::ON_ASSIGNED) {
+ // Assigned key, turn off voice and key
+ if ((*_voices)[key->voice].state == Voice::State::ACTIVE) {
+ assert((*_voices)[key->voice].note == note_num);
+ if ( ! _sustain) {
+ free_voice(context, key->voice, time);
+ } else {
+ (*_voices)[key->voice].state = Voice::State::HOLDING;
+ }
+ }
+ }
+
+ key->state = Key::State::OFF;
+}
+
+void
+NoteNode::free_voice(RunContext& context, uint32_t voice, FrameTime time)
+{
+ assert(time >= context.start() && time <= context.end());
+
+ // Find a key to reassign to the freed voice (the newest, if there is one)
+ Key* replace_key = nullptr;
+ uint8_t replace_key_num = 0;
+
+ for (uint8_t i = 0; i <= 127; ++i) {
+ if (_keys[i].state == Key::State::ON_UNASSIGNED) {
+ if (replace_key == nullptr || _keys[i].time > replace_key->time) {
+ replace_key = &_keys[i];
+ replace_key_num = i;
+ }
+ }
+ }
+
+ if (replace_key != nullptr) { // Found a key to assign to freed voice
+ assert(&_keys[replace_key_num] == replace_key);
+ assert(replace_key->state == Key::State::ON_UNASSIGNED);
+
+ // Change the freq but leave the gate high and don't retrigger
+ _freq_port->set_voice_value(context, voice, time, note_to_freq(replace_key_num));
+ _num_port->set_voice_value(context, voice, time, replace_key_num);
+
+ replace_key->state = Key::State::ON_ASSIGNED;
+ replace_key->voice = voice;
+ _keys[(*_voices)[voice].note].state = Key::State::ON_UNASSIGNED;
+ (*_voices)[voice].note = replace_key_num;
+ (*_voices)[voice].state = Voice::State::ACTIVE;
+ } else {
+ // No new note for voice, deactivate (set gate low)
+ _gate_port->set_voice_value(context, voice, time, 0.0f);
+ (*_voices)[voice].state = Voice::State::FREE;
+ }
+}
+
+void
+NoteNode::all_notes_off(RunContext& context, FrameTime time)
+{
+ assert(time >= context.start() && time <= context.end());
+
+ // FIXME: set all keys to Key::OFF?
+
+ for (uint32_t i = 0; i < _polyphony; ++i) {
+ _gate_port->set_voice_value(context, i, time, 0.0f);
+ (*_voices)[i].state = Voice::State::FREE;
+ }
+}
+
+void
+NoteNode::sustain_on(RunContext& context, FrameTime time)
+{
+ _sustain = true;
+}
+
+void
+NoteNode::sustain_off(RunContext& context, FrameTime time)
+{
+ assert(time >= context.start() && time <= context.end());
+
+ _sustain = false;
+
+ for (uint32_t i=0; i < _polyphony; ++i) {
+ if ((*_voices)[i].state == Voice::State::HOLDING) {
+ free_voice(context, i, time);
+ }
+ }
+}
+
+void
+NoteNode::bend(RunContext& context, FrameTime time, float amount)
+{
+ _bend_port->set_control_value(context, time, amount);
+}
+
+void
+NoteNode::note_pressure(RunContext& context, FrameTime time, uint8_t note_num, float amount)
+{
+ for (uint32_t i=0; i < _polyphony; ++i) {
+ if ((*_voices)[i].state != Voice::State::FREE && (*_voices)[i].note == note_num) {
+ _pressure_port->set_voice_value(context, i, time, amount);
+ return;
+ }
+ }
+}
+
+void
+NoteNode::channel_pressure(RunContext& context, FrameTime time, float amount)
+{
+ _pressure_port->set_control_value(context, time, amount);
+}
+
+} // namespace internals
+} // namespace server
+} // namespace ingen
diff --git a/src/server/internals/Note.hpp b/src/server/internals/Note.hpp
new file mode 100644
index 00000000..fb935179
--- /dev/null
+++ b/src/server/internals/Note.hpp
@@ -0,0 +1,109 @@
+/*
+ This file is part of Ingen.
+ Copyright 2007-2015 David Robillard <http://drobilla.net/>
+
+ Ingen is free software: you can redistribute it and/or modify it under the
+ terms of the GNU Affero General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or any later version.
+
+ Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU Affero General Public License for details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with Ingen. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_INTERNALS_NOTE_HPP
+#define INGEN_INTERNALS_NOTE_HPP
+
+#include "InternalBlock.hpp"
+#include "types.hpp"
+
+namespace ingen {
+namespace server {
+
+class InputPort;
+class OutputPort;
+class InternalPlugin;
+
+namespace internals {
+
+/** MIDI note input block.
+ *
+ * For pitched instruments like keyboard, etc.
+ *
+ * \ingroup engine
+ */
+class NoteNode : public InternalBlock
+{
+public:
+ NoteNode(InternalPlugin* plugin,
+ BufferFactory& bufs,
+ const Raul::Symbol& symbol,
+ bool polyphonic,
+ GraphImpl* parent,
+ SampleRate srate);
+
+ bool prepare_poly(BufferFactory& bufs, uint32_t poly) override;
+ bool apply_poly(RunContext& context, uint32_t poly) override;
+
+ void run(RunContext& context) override;
+
+ void note_on(RunContext& context, uint8_t note_num, uint8_t velocity, FrameTime time);
+ void note_off(RunContext& context, uint8_t note_num, FrameTime time);
+ void all_notes_off(RunContext& context, FrameTime time);
+
+ void sustain_on(RunContext& context, FrameTime time);
+ void sustain_off(RunContext& context, FrameTime time);
+
+ void bend(RunContext& context, FrameTime time, float amount);
+ void note_pressure(RunContext& context, FrameTime time, uint8_t note_num, float amount);
+ void channel_pressure(RunContext& context, FrameTime time, float amount);
+
+ static InternalPlugin* internal_plugin(URIs& uris);
+
+private:
+ /** Key, one for each key on the keyboard */
+ struct Key {
+ enum class State { OFF, ON_ASSIGNED, ON_UNASSIGNED };
+ Key() : state(State::OFF), voice(0), time(0) {}
+ State state;
+ uint32_t voice;
+ SampleCount time;
+ };
+
+ /** Voice, one of these always exists for each voice */
+ struct Voice {
+ enum class State { FREE, ACTIVE, HOLDING };
+ Voice() : state(State::FREE), note(0), time(0) {}
+ State state;
+ uint8_t note;
+ SampleCount time;
+ };
+
+ typedef Raul::Array<Voice> Voices;
+
+ void free_voice(RunContext& context, uint32_t voice, FrameTime time);
+
+ MPtr<Voices> _voices;
+ MPtr<Voices> _prepared_voices;
+
+ Key _keys[128];
+ bool _sustain; ///< Whether or not hold pedal is depressed
+
+ InputPort* _midi_in_port;
+ OutputPort* _freq_port;
+ OutputPort* _num_port;
+ OutputPort* _vel_port;
+ OutputPort* _gate_port;
+ OutputPort* _trig_port;
+ OutputPort* _bend_port;
+ OutputPort* _pressure_port;
+};
+
+} // namespace server
+} // namespace ingen
+} // namespace internals
+
+#endif // INGEN_INTERNALS_NOTE_HPP
diff --git a/src/server/internals/Time.cpp b/src/server/internals/Time.cpp
new file mode 100644
index 00000000..c35aa02b
--- /dev/null
+++ b/src/server/internals/Time.cpp
@@ -0,0 +1,78 @@
+/*
+ This file is part of Ingen.
+ Copyright 2007-2015 David Robillard <http://drobilla.net/>
+
+ Ingen is free software: you can redistribute it and/or modify it under the
+ terms of the GNU Affero General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or any later version.
+
+ Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU Affero General Public License for details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with Ingen. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "ingen/URIs.hpp"
+#include "lv2/atom/util.h"
+#include "lv2/midi/midi.h"
+
+#include "Buffer.hpp"
+#include "Driver.hpp"
+#include "Engine.hpp"
+#include "InternalPlugin.hpp"
+#include "OutputPort.hpp"
+#include "RunContext.hpp"
+#include "internals/Time.hpp"
+#include "util.hpp"
+
+namespace ingen {
+namespace server {
+namespace internals {
+
+InternalPlugin* TimeNode::internal_plugin(URIs& uris) {
+ return new InternalPlugin(
+ uris, URI(NS_INTERNALS "Time"), Raul::Symbol("time"));
+}
+
+TimeNode::TimeNode(InternalPlugin* plugin,
+ BufferFactory& bufs,
+ const Raul::Symbol& symbol,
+ bool polyphonic,
+ GraphImpl* parent,
+ SampleRate srate)
+ : InternalBlock(plugin, symbol, false, parent, srate)
+{
+ const ingen::URIs& uris = bufs.uris();
+ _ports = bufs.maid().make_managed<Ports>(1);
+
+ _notify_port = new OutputPort(
+ bufs, this, Raul::Symbol("notify"), 0, 1,
+ PortType::ATOM, uris.atom_Sequence, Atom(), 1024);
+ _notify_port->set_property(uris.lv2_name, bufs.forge().alloc("Notify"));
+ _notify_port->set_property(uris.atom_supports,
+ bufs.forge().make_urid(uris.time_Position));
+ _ports->at(0) = _notify_port;
+}
+
+void
+TimeNode::run(RunContext& context)
+{
+ BufferRef buf = _notify_port->buffer(0);
+ LV2_Atom_Sequence* seq = buf->get<LV2_Atom_Sequence>();
+
+ // Initialise output to the empty sequence
+ seq->atom.type = _notify_port->bufs().uris().atom_Sequence;
+ seq->atom.size = sizeof(LV2_Atom_Sequence_Body);
+ seq->body.unit = 0;
+ seq->body.pad = 0;
+
+ // Ask the driver to append any time events for this cycle
+ context.engine().driver()->append_time_events(
+ context, *_notify_port->buffer(0));
+}
+
+} // namespace internals
+} // namespace server
+} // namespace ingen
diff --git a/src/server/internals/Time.hpp b/src/server/internals/Time.hpp
new file mode 100644
index 00000000..958cd239
--- /dev/null
+++ b/src/server/internals/Time.hpp
@@ -0,0 +1,59 @@
+/*
+ This file is part of Ingen.
+ Copyright 2007-2015 David Robillard <http://drobilla.net/>
+
+ Ingen is free software: you can redistribute it and/or modify it under the
+ terms of the GNU Affero General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or any later version.
+
+ Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU Affero General Public License for details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with Ingen. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_INTERNALS_TIME_HPP
+#define INGEN_INTERNALS_TIME_HPP
+
+#include "InternalBlock.hpp"
+
+namespace ingen {
+namespace server {
+
+class InputPort;
+class OutputPort;
+class InternalPlugin;
+
+namespace internals {
+
+/** Time information block.
+ *
+ * This sends messages whenever the transport speed or tempo changes.
+ *
+ * \ingroup engine
+ */
+class TimeNode : public InternalBlock
+{
+public:
+ TimeNode(InternalPlugin* plugin,
+ BufferFactory& bufs,
+ const Raul::Symbol& symbol,
+ bool polyphonic,
+ GraphImpl* parent,
+ SampleRate srate);
+
+ void run(RunContext& context) override;
+
+ static InternalPlugin* internal_plugin(URIs& uris);
+
+private:
+ OutputPort* _notify_port;
+};
+
+} // namespace server
+} // namespace ingen
+} // namespace internals
+
+#endif // INGEN_INTERNALS_TIME_HPP
diff --git a/src/server/internals/Trigger.cpp b/src/server/internals/Trigger.cpp
new file mode 100644
index 00000000..793e508d
--- /dev/null
+++ b/src/server/internals/Trigger.cpp
@@ -0,0 +1,187 @@
+/*
+ This file is part of Ingen.
+ Copyright 2007-2016 David Robillard <http://drobilla.net/>
+
+ Ingen is free software: you can redistribute it and/or modify it under the
+ terms of the GNU Affero General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or any later version.
+
+ Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU Affero General Public License for details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with Ingen. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <cmath>
+
+#include "ingen/URIs.hpp"
+#include "lv2/atom/util.h"
+#include "lv2/midi/midi.h"
+
+#include "Buffer.hpp"
+#include "Engine.hpp"
+#include "InputPort.hpp"
+#include "InternalPlugin.hpp"
+#include "OutputPort.hpp"
+#include "RunContext.hpp"
+#include "ingen_config.h"
+#include "internals/Trigger.hpp"
+#include "util.hpp"
+
+namespace ingen {
+namespace server {
+namespace internals {
+
+InternalPlugin* TriggerNode::internal_plugin(URIs& uris) {
+ return new InternalPlugin(
+ uris, URI(NS_INTERNALS "Trigger"), Raul::Symbol("trigger"));
+}
+
+TriggerNode::TriggerNode(InternalPlugin* plugin,
+ BufferFactory& bufs,
+ const Raul::Symbol& symbol,
+ bool polyphonic,
+ GraphImpl* parent,
+ SampleRate srate)
+ : InternalBlock(plugin, symbol, false, parent, srate)
+ , _learning(false)
+{
+ const ingen::URIs& uris = bufs.uris();
+ _ports = bufs.maid().make_managed<Ports>(6);
+
+ const Atom zero = bufs.forge().make(0.0f);
+
+ _midi_in_port = new InputPort(bufs, this, Raul::Symbol("input"), 0, 1,
+ PortType::ATOM, uris.atom_Sequence, Atom());
+ _midi_in_port->set_property(uris.lv2_name, bufs.forge().alloc("Input"));
+ _midi_in_port->set_property(uris.atom_supports,
+ bufs.forge().make_urid(uris.midi_MidiEvent));
+ _ports->at(0) = _midi_in_port;
+
+ _midi_out_port = new OutputPort(bufs, this, Raul::Symbol("event"), 1, 1,
+ PortType::ATOM, uris.atom_Sequence, Atom());
+ _midi_out_port->set_property(uris.lv2_name, bufs.forge().alloc("Event"));
+ _midi_out_port->set_property(uris.atom_supports,
+ bufs.forge().make_urid(uris.midi_MidiEvent));
+ _ports->at(1) = _midi_out_port;
+
+ _note_port = new InputPort(bufs, this, Raul::Symbol("note"), 2, 1,
+ PortType::ATOM, uris.atom_Sequence,
+ bufs.forge().make(60.0f));
+ _note_port->set_property(uris.atom_supports, bufs.uris().atom_Float);
+ _note_port->set_property(uris.lv2_minimum, zero);
+ _note_port->set_property(uris.lv2_maximum, bufs.forge().make(127.0f));
+ _note_port->set_property(uris.lv2_portProperty, uris.lv2_integer);
+ _note_port->set_property(uris.lv2_name, bufs.forge().alloc("Note"));
+ _ports->at(2) = _note_port;
+
+ _gate_port = new OutputPort(bufs, this, Raul::Symbol("gate"), 3, 1,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _gate_port->set_property(uris.atom_supports, bufs.uris().atom_Float);
+ _gate_port->set_property(uris.lv2_portProperty, uris.lv2_toggled);
+ _gate_port->set_property(uris.lv2_name, bufs.forge().alloc("Gate"));
+ _ports->at(3) = _gate_port;
+
+ _trig_port = new OutputPort(bufs, this, Raul::Symbol("trigger"), 4, 1,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _trig_port->set_property(uris.atom_supports, bufs.uris().atom_Float);
+ _trig_port->set_property(uris.lv2_portProperty, uris.lv2_toggled);
+ _trig_port->set_property(uris.lv2_name, bufs.forge().alloc("Trigger"));
+ _ports->at(4) = _trig_port;
+
+ _vel_port = new OutputPort(bufs, this, Raul::Symbol("velocity"), 5, 1,
+ PortType::ATOM, uris.atom_Sequence, zero);
+ _vel_port->set_property(uris.atom_supports, bufs.uris().atom_Float);
+ _vel_port->set_property(uris.lv2_minimum, zero);
+ _vel_port->set_property(uris.lv2_maximum, bufs.forge().make(1.0f));
+ _vel_port->set_property(uris.lv2_name, bufs.forge().alloc("Velocity"));
+ _ports->at(5) = _vel_port;
+}
+
+void
+TriggerNode::run(RunContext& context)
+{
+ const BufferRef midi_in = _midi_in_port->buffer(0);
+ LV2_Atom_Sequence* const seq = midi_in->get<LV2_Atom_Sequence>();
+ const BufferRef midi_out = _midi_out_port->buffer(0);
+
+ // Initialise output to the empty sequence
+ midi_out->prepare_write(context);
+
+ LV2_ATOM_SEQUENCE_FOREACH(seq, ev) {
+ const int64_t t = ev->time.frames;
+ const uint8_t* buf = (const uint8_t*)LV2_ATOM_BODY(&ev->body);
+ bool emit = false;
+ if (ev->body.type == _midi_in_port->bufs().uris().midi_MidiEvent &&
+ ev->body.size >= 3) {
+ const FrameTime time = context.start() + t;
+ switch (lv2_midi_message_type(buf)) {
+ case LV2_MIDI_MSG_NOTE_ON:
+ if (buf[2] == 0) {
+ emit = note_off(context, buf[1], time);
+ } else {
+ emit = note_on(context, buf[1], buf[2], time);
+ }
+ break;
+ case LV2_MIDI_MSG_NOTE_OFF:
+ emit = note_off(context, buf[1], time);
+ break;
+ case LV2_MIDI_MSG_CONTROLLER:
+ switch (buf[1]) {
+ case LV2_MIDI_CTL_ALL_NOTES_OFF:
+ case LV2_MIDI_CTL_ALL_SOUNDS_OFF:
+ _gate_port->set_control_value(context, time, 0.0f);
+ emit = true;
+ }
+ default:
+ break;
+ }
+ }
+
+ if (emit) {
+ midi_out->append_event(t, &ev->body);
+ }
+ }
+}
+
+bool
+TriggerNode::note_on(RunContext& context, uint8_t note_num, uint8_t velocity, FrameTime time)
+{
+ assert(time >= context.start() && time <= context.end());
+ const uint32_t offset = time - context.start();
+
+ if (_learning) {
+ _note_port->set_control_value(context, time, (float)note_num);
+ _note_port->force_monitor_update();
+ _learning = false;
+ }
+
+ if (note_num == lrintf(_note_port->buffer(0)->value_at(offset))) {
+ _gate_port->set_control_value(context, time, 1.0f);
+ _trig_port->set_control_value(context, time, 1.0f);
+ _trig_port->set_control_value(context, time + 1, 0.0f);
+ _vel_port->set_control_value(context, time, velocity / 127.0f);
+ return true;
+ }
+ return false;
+}
+
+bool
+TriggerNode::note_off(RunContext& context, uint8_t note_num, FrameTime time)
+{
+ assert(time >= context.start() && time <= context.end());
+ const uint32_t offset = time - context.start();
+
+ if (note_num == lrintf(_note_port->buffer(0)->value_at(offset))) {
+ _gate_port->set_control_value(context, time, 0.0f);
+ return true;
+ }
+
+ return false;
+}
+
+} // namespace internals
+} // namespace server
+} // namespace ingen
diff --git a/src/server/internals/Trigger.hpp b/src/server/internals/Trigger.hpp
new file mode 100644
index 00000000..98d50f2c
--- /dev/null
+++ b/src/server/internals/Trigger.hpp
@@ -0,0 +1,75 @@
+/*
+ This file is part of Ingen.
+ Copyright 2007-2016 David Robillard <http://drobilla.net/>
+
+ Ingen is free software: you can redistribute it and/or modify it under the
+ terms of the GNU Affero General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or any later version.
+
+ Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU Affero General Public License for details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with Ingen. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_INTERNALS_TRIGGER_HPP
+#define INGEN_INTERNALS_TRIGGER_HPP
+
+#include "InternalBlock.hpp"
+
+namespace ingen {
+namespace server {
+
+class InputPort;
+class OutputPort;
+class InternalPlugin;
+
+namespace internals {
+
+/** MIDI trigger input block.
+ *
+ * Just has a gate, for drums etc. A control port is used to select
+ * which note number is responded to.
+ *
+ * Note that this block is always monophonic, the poly parameter is ignored.
+ * (Should that change?)
+ *
+ * \ingroup engine
+ */
+class TriggerNode : public InternalBlock
+{
+public:
+ TriggerNode(InternalPlugin* plugin,
+ BufferFactory& bufs,
+ const Raul::Symbol& symbol,
+ bool polyphonic,
+ GraphImpl* parent,
+ SampleRate srate);
+
+ void run(RunContext& context) override;
+
+ bool note_on(RunContext& context, uint8_t note_num, uint8_t velocity, FrameTime time);
+ bool note_off(RunContext& context, uint8_t note_num, FrameTime time);
+
+ void learn() override { _learning = true; }
+
+ static InternalPlugin* internal_plugin(URIs& uris);
+
+private:
+ bool _learning;
+
+ InputPort* _midi_in_port;
+ OutputPort* _midi_out_port;
+ InputPort* _note_port;
+ OutputPort* _gate_port;
+ OutputPort* _trig_port;
+ OutputPort* _vel_port;
+};
+
+} // namespace server
+} // namespace ingen
+} // namespace internals
+
+#endif // INGEN_INTERNALS_TRIGGER_HPP
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