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Diffstat (limited to 'src/engine/MidiControlNode.cpp')
| -rw-r--r-- | src/engine/MidiControlNode.cpp | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/src/engine/MidiControlNode.cpp b/src/engine/MidiControlNode.cpp deleted file mode 100644 index e8237ba3..00000000 --- a/src/engine/MidiControlNode.cpp +++ /dev/null @@ -1,136 +0,0 @@ -/* This file is part of Ingen. - * Copyright (C) 2007 Dave Robillard <http://drobilla.net> - * - * Ingen is free software; you can redistribute it and/or modify it under the - * terms of the GNU General Public License as published by the Free Software - * Foundation; either version 2 of the License, or (at your option) 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 General Public License for details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <math.h> -#include "raul/midi_events.h" -#include "MidiControlNode.hpp" -#include "PostProcessor.hpp" -#include "events/MidiLearnEvent.hpp" -#include "events/SendPortValueEvent.hpp" -#include "InputPort.hpp" -#include "OutputPort.hpp" -#include "InternalPlugin.hpp" -#include "AudioBuffer.hpp" -#include "ProcessContext.hpp" -#include "EventBuffer.hpp" -#include "Engine.hpp" -#include "util.hpp" - -namespace Ingen { - -static InternalPlugin controller_plugin(NS_INTERNALS "Controller", "controller", "Controller"); - -MidiControlNode::MidiControlNode(const string& path, - bool polyphonic, - PatchImpl* parent, - SampleRate srate, - size_t buffer_size) - : NodeBase(&controller_plugin, path, false, parent, srate, buffer_size) - , _learning(false) -{ - _ports = new Raul::Array<PortImpl*>(6); - - _midi_in_port = new InputPort(this, "input", 0, 1, DataType::EVENT, Atom(), _buffer_size); - _ports->at(0) = _midi_in_port; - - _param_port = new InputPort(this, "controller", 1, 1, DataType::CONTROL, 0.0f, 1); - _param_port->set_variable("lv2:minimum", 0.0f); - _param_port->set_variable("lv2:maximum", 127.0f); - _param_port->set_variable("lv2:integer", true); - _ports->at(1) = _param_port; - - _log_port = new InputPort(this, "logarithmic", 2, 1, DataType::CONTROL, 0.0f, 1); - _log_port->set_variable("lv2:toggled", true); - _ports->at(2) = _log_port; - - _min_port = new InputPort(this, "minimum", 3, 1, DataType::CONTROL, 0.0f, 1); - _ports->at(3) = _min_port; - - _max_port = new InputPort(this, "maximum", 4, 1, DataType::CONTROL, 1.0f, 1); - _ports->at(4) = _max_port; - - _audio_port = new OutputPort(this, "ar_output", 5, 1, DataType::AUDIO, 0.0f, _buffer_size); - _ports->at(5) = _audio_port; -} - - -void -MidiControlNode::process(ProcessContext& context) -{ - NodeBase::pre_process(context); - - uint32_t frames = 0; - uint32_t subframes = 0; - uint16_t type = 0; - uint16_t size = 0; - uint8_t* buf = NULL; - - EventBuffer* const midi_in = (EventBuffer*)_midi_in_port->buffer(0); - assert(midi_in->this_nframes() == context.nframes()); - - while (midi_in->get_event(&frames, &subframes, &type, &size, &buf)) { - // FIXME: type - if (size >= 3 && (buf[0] & 0xF0) == MIDI_CMD_CONTROL) - control(context, buf[1], buf[2], frames + context.start()); - - midi_in->increment(); - } - - NodeBase::post_process(context); -} - - -void -MidiControlNode::control(ProcessContext& context, uchar control_num, uchar val, FrameTime time) -{ - assert(time - context.start() < _buffer_size); - - Sample scaled_value; - - const Sample nval = (val / 127.0f); // normalized [0, 1] - - if (_learning) { - _param_port->set_value(control_num); - ((AudioBuffer*)_param_port->buffer(0))->set_value( - (float)control_num, context.start(), context.end()); - _param_port->broadcast_value(context, true); - _learning = false; - } - - const Sample min_port_val = ((AudioBuffer*)_min_port->buffer(0))->value_at(0); - const Sample max_port_val = ((AudioBuffer*)_max_port->buffer(0))->value_at(0); - const Sample log_port_val = ((AudioBuffer*)_log_port->buffer(0))->value_at(0); - - 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; - } - - if (control_num == ((AudioBuffer*)_param_port->buffer(0))->value_at(0)) - ((AudioBuffer*)_audio_port->buffer(0))->set_value(scaled_value, context.start(), time); -} - - -} // namespace Ingen - |