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Diffstat (limited to 'libs/evoral/evoral/Sequence.hpp')
| -rw-r--r-- | libs/evoral/evoral/Sequence.hpp | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/libs/evoral/evoral/Sequence.hpp b/libs/evoral/evoral/Sequence.hpp new file mode 100644 index 0000000000..ef3ad39fc1 --- /dev/null +++ b/libs/evoral/evoral/Sequence.hpp @@ -0,0 +1,215 @@ +/* This file is part of Evoral. + * Copyright (C) 2008 Dave Robillard <http://drobilla.net> + * Copyright (C) 2000-2008 Paul Davis + * + * Evoral 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. + * + * Evoral 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 EVORAL_SEQUENCE_HPP +#define EVORAL_SEQUENCE_HPP + +#include <vector> +#include <queue> +#include <deque> +#include <map> +#include <utility> +#include <boost/shared_ptr.hpp> +#include <boost/utility.hpp> +#include <glibmm/thread.h> +#include <evoral/types.hpp> +#include <evoral/Note.hpp> +#include <evoral/Parameter.hpp> +#include <evoral/ControlSet.hpp> + +namespace Evoral { + +class EventSink; +class Note; +class Event; +class ControlList; + +/** This class keeps track of the current x and y for a control + */ +class ControlIterator { +public: + boost::shared_ptr<const ControlList> list; + double x; + double y; + + ControlIterator(boost::shared_ptr<const ControlList> a_list, + double a_x, + double a_y) + : list(a_list) + , x(a_x) + , y(a_y) + {} +}; + + +/** This is a higher level view of events, with separate representations for + * notes (instead of just unassociated note on/off events) and controller data. + * Controller data is represented as a list of time-stamped float values. + */ +class Sequence : public boost::noncopyable, virtual public ControlSet { +public: + Sequence(size_t size); + + void write_lock(); + void write_unlock(); + + void read_lock() const; + void read_unlock() const; + + void clear(); + + bool percussive() const { return _percussive; } + void set_percussive(bool p) { _percussive = p; } + + void start_write(); + bool writing() const { return _writing; } + void end_write(bool delete_stuck=false); + + size_t read(EventSink& dst, + timestamp_t start, + timedur_t length, + timestamp_t stamp_offset) const; + + /** Resizes vector if necessary (NOT realtime safe) */ + void append(const Event& ev); + + inline const boost::shared_ptr<const Note> note_at(unsigned i) const { return _notes[i]; } + inline const boost::shared_ptr<Note> note_at(unsigned i) { return _notes[i]; } + + inline size_t n_notes() const { return _notes.size(); } + inline bool empty() const { return _notes.size() == 0 && _controls.size() == 0; } + + inline static bool note_time_comparator(const boost::shared_ptr<const Note> a, + const boost::shared_ptr<const Note> b) { + return a->time() < b->time(); + } + + struct LaterNoteEndComparator { + typedef const Note* value_type; + inline bool operator()(const boost::shared_ptr<const Note> a, + const boost::shared_ptr<const Note> b) const { + return a->end_time() > b->end_time(); + } + }; + + typedef std::vector< boost::shared_ptr<Note> > Notes; + inline Notes& notes() { return _notes; } + inline const Notes& notes() const { return _notes; } + + /** Read iterator */ + class const_iterator { + public: + const_iterator(const Sequence& seq, double t); + ~const_iterator(); + + inline bool locked() const { return _locked; } + + const Event& operator*() const { return *_event; } + const boost::shared_ptr<Event> operator->() const { return _event; } + const boost::shared_ptr<Event> get_event_pointer() { return _event; } + + const const_iterator& operator++(); // prefix only + bool operator==(const const_iterator& other) const; + bool operator!=(const const_iterator& other) const { return ! operator==(other); } + + const_iterator& operator=(const const_iterator& other); + + private: + friend class Sequence; + + const Sequence* _seq; + boost::shared_ptr<Event> _event; + + typedef std::priority_queue< boost::shared_ptr<Note>, + std::deque< boost::shared_ptr<Note> >, + LaterNoteEndComparator > + ActiveNotes; + + mutable ActiveNotes _active_notes; + + bool _is_end; + bool _locked; + Notes::const_iterator _note_iter; + std::vector<ControlIterator> _control_iters; + std::vector<ControlIterator>::iterator _control_iter; + }; + + const_iterator begin() const { return const_iterator(*this, 0); } + const const_iterator& end() const { return _end_iter; } + + bool control_to_midi_event(boost::shared_ptr<Event>& ev, + const ControlIterator& iter) const; + + typedef std::map< Parameter, boost::shared_ptr<Control> > Controls; + Controls& controls() { return _controls; } + const Controls& controls() const { return _controls; } + + bool edited() const { return _edited; } + void set_edited(bool yn) { _edited = yn; } + +protected: + void add_note_unlocked(const boost::shared_ptr<Note> note); + void remove_note_unlocked(const boost::shared_ptr<const Note> note); + + mutable const_iterator _read_iter; + bool _edited; +#ifndef NDEBUG + bool is_sorted() const; +#endif + +private: + friend class const_iterator; + + void append_note_on_unlocked(uint8_t chan, double time, uint8_t note, uint8_t velocity); + void append_note_off_unlocked(uint8_t chan, double time, uint8_t note); + void append_control_unlocked(Parameter param, double time, double value); + + mutable Glib::RWLock _lock; + + Notes _notes; + Controls _controls; + + typedef std::vector<size_t> WriteNotes; + WriteNotes _write_notes[16]; + bool _writing; + + typedef std::vector< boost::shared_ptr<const ControlList> > ControlLists; + ControlLists _dirty_controls; + + const const_iterator _end_iter; + mutable nframes_t _next_read; + bool _percussive; + + /** FIXME: Make fully dynamic, map to URIs */ + enum EventTypes { + midi_cc_type, + midi_pc_type, + midi_pb_type, + midi_ca_type + }; + + typedef std::priority_queue< + boost::shared_ptr<Note>, std::deque< boost::shared_ptr<Note> >, + LaterNoteEndComparator> + ActiveNotes; +}; + +} // namespace Evoral + +#endif // EVORAL_SEQUENCE_HPP + |