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Diffstat (limited to 'src/libs/engine/events/MidiLearnEvent.hpp')
-rw-r--r-- | src/libs/engine/events/MidiLearnEvent.hpp | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/libs/engine/events/MidiLearnEvent.hpp b/src/libs/engine/events/MidiLearnEvent.hpp new file mode 100644 index 00000000..c5a0902f --- /dev/null +++ b/src/libs/engine/events/MidiLearnEvent.hpp @@ -0,0 +1,85 @@ +/* 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 + */ + +#ifndef MIDILEARNEVENT_H +#define MIDILEARNEVENT_H + +#include "QueuedEvent.hpp" +#include "MidiControlNode.hpp" +#include "types.hpp" +#include <string> +using std::string; + +namespace Ingen { + +class Node; +class ControlChangeEvent; + + +/** Response event for a MIDI learn. + * + * This is a trivial event that sends a control change in it's post_process + * method (used by MidiLearnEvent to notify clients when the learn happens) + */ +class MidiLearnResponseEvent : public Event +{ +public: + MidiLearnResponseEvent(Engine& engine, const string& port_path, SampleCount timestamp) + : Event(engine, SharedPtr<Shared::Responder>(), timestamp), + _port_path(port_path), + _value(0.0f) + {} + + void set_value(Sample val) { _value = val; } + void post_process(); + +private: + string _port_path; + Sample _value; +}; + + + +/** A MIDI learn event. + * + * This creates a MidiLearnResponseEvent and passes it to the learning node, which + * will push it to the post-processor once the learn happens in order to reply + * to the client with the new port (learned controller) value. + * + * \ingroup engine + */ +class MidiLearnEvent : public QueuedEvent +{ +public: + MidiLearnEvent(Engine& engine, SharedPtr<Shared::Responder> responder, SampleCount timestamp, const string& node_path); + + void pre_process(); + void execute(SampleCount nframes, FrameTime start, FrameTime end); + void post_process(); + +private: + string _node_path; + Node* _node; + + /// Event to respond with when learned + MidiLearnResponseEvent* _response_event; +}; + + +} // namespace Ingen + +#endif // MIDILEARNEVENT_H |