2 Copyright (C) 2006-2009 Paul Davis
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the Free
7 Software Foundation; either version 2 of the License, or (at your option)
10 This program is distributed in the hope that it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __ardour_midi_buffer_h__
21 #define __ardour_midi_buffer_h__
23 #include <evoral/midi_util.h>
24 #include <midi++/event.h>
25 #include <ardour/buffer.h>
26 #include <ardour/event_type_map.h>
31 /** Buffer containing 8-bit unsigned char (MIDI) data. */
32 class MidiBuffer : public Buffer
35 MidiBuffer(size_t capacity);
38 void silence(nframes_t dur, nframes_t offset=0);
40 void read_from(const Buffer& src, nframes_t nframes, nframes_t offset);
42 void copy(const MidiBuffer& copy);
44 bool push_back(const Evoral::MIDIEvent& event);
45 bool push_back(const jack_midi_event_t& event);
46 uint8_t* reserve(double time, size_t size);
50 bool merge(const MidiBuffer& a, const MidiBuffer& b);
51 bool merge_in_place(const MidiBuffer &other);
53 template<typename B, typename E>
54 struct iterator_base {
55 iterator_base<B,E>(B& b, size_t o) : buffer(b), offset(o) {}
56 inline E operator*() const {
57 uint8_t* ev_start = buffer._data + offset + sizeof(Evoral::EventTime);
58 return E(EventTypeMap::instance().midi_event_type(*ev_start),
59 *(Evoral::EventTime*)(buffer._data + offset),
60 Evoral::midi_event_size(*ev_start) + 1, ev_start);
62 inline iterator_base<B,E>& operator++() {
63 uint8_t* ev_start = buffer._data + offset + sizeof(Evoral::EventTime);
64 offset += sizeof(Evoral::EventTime) + Evoral::midi_event_size(*ev_start) + 1;
67 inline bool operator!=(const iterator_base<B,E>& other) const {
68 return (&buffer != &other.buffer) || (offset != other.offset);
74 typedef iterator_base<MidiBuffer, Evoral::MIDIEvent> iterator;
75 typedef iterator_base<const MidiBuffer, const Evoral::MIDIEvent> const_iterator;
77 iterator begin() { return iterator(*this, 0); }
78 iterator end() { return iterator(*this, _size); }
80 const_iterator begin() const { return const_iterator(*this, 0); }
81 const_iterator end() const { return const_iterator(*this, _size); }
84 friend class iterator_base<MidiBuffer, Evoral::MIDIEvent>;
85 friend class iterator_base<const MidiBuffer, const Evoral::MIDIEvent>;
87 size_t _size; ///< Size in bytes of used portion of _data
88 uint8_t* _data; ///< timestamp, event, timestamp, event, ...
94 #endif // __ardour_midi_buffer_h__