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 typedef nframes_t TimeType;
37 MidiBuffer(size_t capacity);
40 void silence (nframes_t nframes, nframes_t offset = 0);
41 void read_from (const Buffer& src, nframes_t nframes, nframes_t dst_offset = 0, nframes_t src_offset = 0);
42 void merge_from (const Buffer& src, nframes_t nframes, nframes_t dst_offset = 0, nframes_t src_offset = 0);
44 void copy(const MidiBuffer& copy);
46 bool push_back(const Evoral::MIDIEvent<TimeType>& event);
47 bool push_back(const jack_midi_event_t& event);
48 bool push_back(TimeType time, size_t size, const uint8_t* data);
49 uint8_t* reserve(TimeType time, size_t size);
53 bool merge(const MidiBuffer& a, const MidiBuffer& b);
54 bool merge_in_place(const MidiBuffer &other);
56 template<typename BufferType, typename EventType>
57 struct iterator_base {
58 iterator_base<BufferType, EventType>(BufferType& b, nframes_t o) : buffer(b), offset(o) {}
59 inline EventType operator*() const {
60 uint8_t* ev_start = buffer._data + offset + sizeof(TimeType);
61 int event_size = Evoral::midi_event_size(ev_start);
62 assert(event_size >= 0);
63 return EventType(EventTypeMap::instance().midi_event_type(*ev_start),
64 *((TimeType*)(buffer._data + offset)),
65 event_size, ev_start);
67 inline EventType operator*() {
68 uint8_t* ev_start = buffer._data + offset + sizeof(TimeType);
69 int event_size = Evoral::midi_event_size(ev_start);
70 assert(event_size >= 0);
71 return EventType(EventTypeMap::instance().midi_event_type(*ev_start),
72 *((TimeType*)(buffer._data + offset)),
73 event_size, ev_start);
76 inline iterator_base<BufferType, EventType>& operator++() {
77 uint8_t* ev_start = buffer._data + offset + sizeof(TimeType);
78 int event_size = Evoral::midi_event_size(ev_start);
79 assert(event_size >= 0);
80 offset += sizeof(TimeType) + event_size;
83 inline bool operator!=(const iterator_base<BufferType, EventType>& other) const {
84 return (&buffer != &other.buffer) || (offset != other.offset);
90 typedef iterator_base< MidiBuffer, Evoral::MIDIEvent<TimeType> > iterator;
91 typedef iterator_base< const MidiBuffer, const Evoral::MIDIEvent<TimeType> > const_iterator;
93 iterator begin() { return iterator(*this, 0); }
94 iterator end() { return iterator(*this, _size); }
96 const_iterator begin() const { return const_iterator(*this, 0); }
97 const_iterator end() const { return const_iterator(*this, _size); }
100 friend class iterator_base< MidiBuffer, Evoral::MIDIEvent<TimeType> >;
101 friend class iterator_base< const MidiBuffer, const Evoral::MIDIEvent<TimeType> >;
103 uint8_t* _data; ///< timestamp, event, timestamp, event, ...
107 } // namespace ARDOUR
109 #endif // __ardour_midi_buffer_h__