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-rw-r--r--src/server/internals/Controller.cpp174
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diff --git a/src/server/internals/Controller.cpp b/src/server/internals/Controller.cpp
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+/*
+ 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
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